mirror of
https://github.com/DanielnetoDotCom/YouPHPTube
synced 2025-10-04 10:19:24 +02:00
10747 lines
299 KiB
JavaScript
10747 lines
299 KiB
JavaScript
import immediate from 'immediate';
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import Md5 from 'spark-md5';
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import { v4 } from 'uuid';
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import vuvuzela from 'vuvuzela';
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import EE from 'events';
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function mangle(key) {
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return '$' + key;
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}
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function unmangle(key) {
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return key.substring(1);
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}
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function Map$1() {
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this._store = {};
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}
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Map$1.prototype.get = function (key) {
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var mangled = mangle(key);
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return this._store[mangled];
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};
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Map$1.prototype.set = function (key, value) {
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var mangled = mangle(key);
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this._store[mangled] = value;
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return true;
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};
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Map$1.prototype.has = function (key) {
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var mangled = mangle(key);
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return mangled in this._store;
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};
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Map$1.prototype.keys = function () {
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return Object.keys(this._store).map(k => unmangle(k));
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};
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Map$1.prototype.delete = function (key) {
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var mangled = mangle(key);
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var res = mangled in this._store;
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delete this._store[mangled];
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return res;
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};
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Map$1.prototype.forEach = function (cb) {
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var keys = Object.keys(this._store);
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for (var i = 0, len = keys.length; i < len; i++) {
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var key = keys[i];
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var value = this._store[key];
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key = unmangle(key);
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cb(value, key);
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}
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};
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Object.defineProperty(Map$1.prototype, 'size', {
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get: function () {
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return Object.keys(this._store).length;
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}
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});
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function Set$1(array) {
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this._store = new Map$1();
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// init with an array
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if (array && Array.isArray(array)) {
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for (var i = 0, len = array.length; i < len; i++) {
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this.add(array[i]);
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}
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}
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}
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Set$1.prototype.add = function (key) {
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return this._store.set(key, true);
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};
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Set$1.prototype.has = function (key) {
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return this._store.has(key);
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};
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Set$1.prototype.forEach = function (cb) {
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this._store.forEach(function (value, key) {
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cb(key);
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});
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};
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Object.defineProperty(Set$1.prototype, 'size', {
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get: function () {
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return this._store.size;
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}
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});
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// Based on https://kangax.github.io/compat-table/es6/ we can sniff out
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// incomplete Map/Set implementations which would otherwise cause our tests to fail.
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// Notably they fail in IE11 and iOS 8.4, which this prevents.
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function supportsMapAndSet() {
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if (typeof Symbol === 'undefined' || typeof Map === 'undefined' || typeof Set === 'undefined') {
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return false;
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}
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var prop = Object.getOwnPropertyDescriptor(Map, Symbol.species);
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return prop && 'get' in prop && Map[Symbol.species] === Map;
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}
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// based on https://github.com/montagejs/collections
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var ExportedSet;
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var ExportedMap;
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{
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if (supportsMapAndSet()) { // prefer built-in Map/Set
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ExportedSet = Set;
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ExportedMap = Map;
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} else { // fall back to our polyfill
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ExportedSet = Set$1;
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ExportedMap = Map$1;
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}
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}
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function isBinaryObject(object) {
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return (typeof ArrayBuffer !== 'undefined' && object instanceof ArrayBuffer) ||
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(typeof Blob !== 'undefined' && object instanceof Blob);
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}
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function cloneArrayBuffer(buff) {
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if (typeof buff.slice === 'function') {
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return buff.slice(0);
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}
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// IE10-11 slice() polyfill
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var target = new ArrayBuffer(buff.byteLength);
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var targetArray = new Uint8Array(target);
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var sourceArray = new Uint8Array(buff);
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targetArray.set(sourceArray);
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return target;
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}
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function cloneBinaryObject(object) {
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if (object instanceof ArrayBuffer) {
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return cloneArrayBuffer(object);
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}
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var size = object.size;
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var type = object.type;
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// Blob
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if (typeof object.slice === 'function') {
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return object.slice(0, size, type);
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}
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// PhantomJS slice() replacement
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return object.webkitSlice(0, size, type);
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}
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// most of this is borrowed from lodash.isPlainObject:
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// https://github.com/fis-components/lodash.isplainobject/
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// blob/29c358140a74f252aeb08c9eb28bef86f2217d4a/index.js
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var funcToString = Function.prototype.toString;
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var objectCtorString = funcToString.call(Object);
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function isPlainObject(value) {
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var proto = Object.getPrototypeOf(value);
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/* istanbul ignore if */
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if (proto === null) { // not sure when this happens, but I guess it can
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return true;
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}
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var Ctor = proto.constructor;
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return (typeof Ctor == 'function' &&
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Ctor instanceof Ctor && funcToString.call(Ctor) == objectCtorString);
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}
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function clone(object) {
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var newObject;
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var i;
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var len;
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if (!object || typeof object !== 'object') {
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return object;
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}
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if (Array.isArray(object)) {
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newObject = [];
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for (i = 0, len = object.length; i < len; i++) {
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newObject[i] = clone(object[i]);
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}
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return newObject;
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}
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// special case: to avoid inconsistencies between IndexedDB
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// and other backends, we automatically stringify Dates
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if (object instanceof Date && isFinite(object)) {
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return object.toISOString();
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}
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if (isBinaryObject(object)) {
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return cloneBinaryObject(object);
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}
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if (!isPlainObject(object)) {
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return object; // don't clone objects like Workers
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}
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newObject = {};
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for (i in object) {
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/* istanbul ignore else */
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if (Object.prototype.hasOwnProperty.call(object, i)) {
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var value = clone(object[i]);
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if (typeof value !== 'undefined') {
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newObject[i] = value;
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}
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}
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}
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return newObject;
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}
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function once(fun) {
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var called = false;
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return function (...args) {
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/* istanbul ignore if */
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if (called) {
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// this is a smoke test and should never actually happen
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throw new Error('once called more than once');
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} else {
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called = true;
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fun.apply(this, args);
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}
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};
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}
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function toPromise(func) {
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//create the function we will be returning
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return function (...args) {
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// Clone arguments
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args = clone(args);
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var self = this;
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// if the last argument is a function, assume its a callback
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var usedCB = (typeof args[args.length - 1] === 'function') ? args.pop() : false;
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var promise = new Promise(function (fulfill, reject) {
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var resp;
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try {
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var callback = once(function (err, mesg) {
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if (err) {
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reject(err);
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} else {
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fulfill(mesg);
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}
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});
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// create a callback for this invocation
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// apply the function in the orig context
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args.push(callback);
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resp = func.apply(self, args);
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if (resp && typeof resp.then === 'function') {
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fulfill(resp);
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}
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} catch (e) {
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reject(e);
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}
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});
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// if there is a callback, call it back
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if (usedCB) {
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promise.then(function (result) {
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usedCB(null, result);
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}, usedCB);
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}
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return promise;
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};
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}
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function logApiCall(self, name, args) {
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/* istanbul ignore if */
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if (self.constructor.listeners('debug').length) {
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var logArgs = ['api', self.name, name];
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for (var i = 0; i < args.length - 1; i++) {
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logArgs.push(args[i]);
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}
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self.constructor.emit('debug', logArgs);
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// override the callback itself to log the response
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var origCallback = args[args.length - 1];
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args[args.length - 1] = function (err, res) {
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var responseArgs = ['api', self.name, name];
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responseArgs = responseArgs.concat(
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err ? ['error', err] : ['success', res]
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);
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self.constructor.emit('debug', responseArgs);
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origCallback(err, res);
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};
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}
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}
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function adapterFun(name, callback) {
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return toPromise(function (...args) {
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if (this._closed) {
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return Promise.reject(new Error('database is closed'));
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}
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if (this._destroyed) {
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return Promise.reject(new Error('database is destroyed'));
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}
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var self = this;
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logApiCall(self, name, args);
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if (!this.taskqueue.isReady) {
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return new Promise(function (fulfill, reject) {
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self.taskqueue.addTask(function (failed) {
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if (failed) {
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reject(failed);
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} else {
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fulfill(self[name].apply(self, args));
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}
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});
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});
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}
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return callback.apply(this, args);
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});
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}
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// like underscore/lodash _.pick()
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function pick(obj, arr) {
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var res = {};
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for (var i = 0, len = arr.length; i < len; i++) {
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var prop = arr[i];
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if (prop in obj) {
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res[prop] = obj[prop];
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}
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}
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return res;
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}
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// Most browsers throttle concurrent requests at 6, so it's silly
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// to shim _bulk_get by trying to launch potentially hundreds of requests
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// and then letting the majority time out. We can handle this ourselves.
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var MAX_NUM_CONCURRENT_REQUESTS = 6;
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function identityFunction(x) {
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return x;
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}
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function formatResultForOpenRevsGet(result) {
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return [{
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ok: result
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}];
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}
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// shim for P/CouchDB adapters that don't directly implement _bulk_get
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function bulkGet(db, opts, callback) {
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var requests = opts.docs;
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// consolidate into one request per doc if possible
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var requestsById = new ExportedMap();
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requests.forEach(function (request) {
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if (requestsById.has(request.id)) {
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requestsById.get(request.id).push(request);
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} else {
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requestsById.set(request.id, [request]);
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}
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});
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var numDocs = requestsById.size;
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var numDone = 0;
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var perDocResults = new Array(numDocs);
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function collapseResultsAndFinish() {
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var results = [];
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perDocResults.forEach(function (res) {
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res.docs.forEach(function (info) {
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results.push({
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id: res.id,
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docs: [info]
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});
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||
});
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});
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callback(null, {results: results});
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}
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function checkDone() {
|
||
if (++numDone === numDocs) {
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collapseResultsAndFinish();
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}
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}
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function gotResult(docIndex, id, docs) {
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perDocResults[docIndex] = {id: id, docs: docs};
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checkDone();
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}
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var allRequests = [];
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requestsById.forEach(function (value, key) {
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allRequests.push(key);
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});
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var i = 0;
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function nextBatch() {
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if (i >= allRequests.length) {
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return;
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||
}
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||
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var upTo = Math.min(i + MAX_NUM_CONCURRENT_REQUESTS, allRequests.length);
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||
var batch = allRequests.slice(i, upTo);
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processBatch(batch, i);
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i += batch.length;
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}
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function processBatch(batch, offset) {
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batch.forEach(function (docId, j) {
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var docIdx = offset + j;
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var docRequests = requestsById.get(docId);
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||
|
||
// just use the first request as the "template"
|
||
// TODO: The _bulk_get API allows for more subtle use cases than this,
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// but for now it is unlikely that there will be a mix of different
|
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// "atts_since" or "attachments" in the same request, since it's just
|
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// replicate.js that is using this for the moment.
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// Also, atts_since is aspirational, since we don't support it yet.
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var docOpts = pick(docRequests[0], ['atts_since', 'attachments']);
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docOpts.open_revs = docRequests.map(function (request) {
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// rev is optional, open_revs disallowed
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||
return request.rev;
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||
});
|
||
|
||
// remove falsey / undefined revisions
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||
docOpts.open_revs = docOpts.open_revs.filter(identityFunction);
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||
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||
var formatResult = identityFunction;
|
||
|
||
if (docOpts.open_revs.length === 0) {
|
||
delete docOpts.open_revs;
|
||
|
||
// when fetching only the "winning" leaf,
|
||
// transform the result so it looks like an open_revs
|
||
// request
|
||
formatResult = formatResultForOpenRevsGet;
|
||
}
|
||
|
||
// globally-supplied options
|
||
['revs', 'attachments', 'binary', 'ajax', 'latest'].forEach(function (param) {
|
||
if (param in opts) {
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docOpts[param] = opts[param];
|
||
}
|
||
});
|
||
db.get(docId, docOpts, function (err, res) {
|
||
var result;
|
||
/* istanbul ignore if */
|
||
if (err) {
|
||
result = [{error: err}];
|
||
} else {
|
||
result = formatResult(res);
|
||
}
|
||
gotResult(docIdx, docId, result);
|
||
nextBatch();
|
||
});
|
||
});
|
||
}
|
||
|
||
nextBatch();
|
||
|
||
}
|
||
|
||
var hasLocal;
|
||
|
||
try {
|
||
localStorage.setItem('_pouch_check_localstorage', 1);
|
||
hasLocal = !!localStorage.getItem('_pouch_check_localstorage');
|
||
} catch (e) {
|
||
hasLocal = false;
|
||
}
|
||
|
||
function hasLocalStorage() {
|
||
return hasLocal;
|
||
}
|
||
|
||
// Custom nextTick() shim for browsers. In node, this will just be process.nextTick(). We
|
||
|
||
class Changes extends EE {
|
||
constructor() {
|
||
super();
|
||
|
||
this._listeners = {};
|
||
|
||
if (hasLocalStorage()) {
|
||
addEventListener("storage", (e) => {
|
||
this.emit(e.key);
|
||
});
|
||
}
|
||
}
|
||
|
||
addListener(dbName, id, db, opts) {
|
||
if (this._listeners[id]) {
|
||
return;
|
||
}
|
||
var inprogress = false;
|
||
var self = this;
|
||
function eventFunction() {
|
||
if (!self._listeners[id]) {
|
||
return;
|
||
}
|
||
if (inprogress) {
|
||
inprogress = 'waiting';
|
||
return;
|
||
}
|
||
inprogress = true;
|
||
var changesOpts = pick(opts, [
|
||
'style', 'include_docs', 'attachments', 'conflicts', 'filter',
|
||
'doc_ids', 'view', 'since', 'query_params', 'binary', 'return_docs'
|
||
]);
|
||
|
||
function onError() {
|
||
inprogress = false;
|
||
}
|
||
|
||
db.changes(changesOpts).on('change', function (c) {
|
||
if (c.seq > opts.since && !opts.cancelled) {
|
||
opts.since = c.seq;
|
||
opts.onChange(c);
|
||
}
|
||
}).on('complete', function () {
|
||
if (inprogress === 'waiting') {
|
||
immediate(eventFunction);
|
||
}
|
||
inprogress = false;
|
||
}).on('error', onError);
|
||
}
|
||
this._listeners[id] = eventFunction;
|
||
this.on(dbName, eventFunction);
|
||
}
|
||
|
||
removeListener(dbName, id) {
|
||
if (!(id in this._listeners)) {
|
||
return;
|
||
}
|
||
super.removeListener(dbName, this._listeners[id]);
|
||
delete this._listeners[id];
|
||
}
|
||
|
||
notifyLocalWindows(dbName) {
|
||
//do a useless change on a storage thing
|
||
//in order to get other windows's listeners to activate
|
||
if (hasLocalStorage()) {
|
||
localStorage[dbName] = (localStorage[dbName] === "a") ? "b" : "a";
|
||
}
|
||
}
|
||
|
||
notify(dbName) {
|
||
this.emit(dbName);
|
||
this.notifyLocalWindows(dbName);
|
||
}
|
||
}
|
||
|
||
function guardedConsole(method) {
|
||
/* istanbul ignore else */
|
||
if (typeof console !== 'undefined' && typeof console[method] === 'function') {
|
||
var args = Array.prototype.slice.call(arguments, 1);
|
||
console[method].apply(console, args);
|
||
}
|
||
}
|
||
|
||
function randomNumber(min, max) {
|
||
var maxTimeout = 600000; // Hard-coded default of 10 minutes
|
||
min = parseInt(min, 10) || 0;
|
||
max = parseInt(max, 10);
|
||
if (max !== max || max <= min) {
|
||
max = (min || 1) << 1; //doubling
|
||
} else {
|
||
max = max + 1;
|
||
}
|
||
// In order to not exceed maxTimeout, pick a random value between half of maxTimeout and maxTimeout
|
||
if (max > maxTimeout) {
|
||
min = maxTimeout >> 1; // divide by two
|
||
max = maxTimeout;
|
||
}
|
||
var ratio = Math.random();
|
||
var range = max - min;
|
||
|
||
return ~~(range * ratio + min); // ~~ coerces to an int, but fast.
|
||
}
|
||
|
||
function defaultBackOff(min) {
|
||
var max = 0;
|
||
if (!min) {
|
||
max = 2000;
|
||
}
|
||
return randomNumber(min, max);
|
||
}
|
||
|
||
// designed to give info to browser users, who are disturbed
|
||
// when they see http errors in the console
|
||
function explainError(status, str) {
|
||
guardedConsole('info', 'The above ' + status + ' is totally normal. ' + str);
|
||
}
|
||
|
||
var assign;
|
||
{
|
||
if (typeof Object.assign === 'function') {
|
||
assign = Object.assign;
|
||
} else {
|
||
// lite Object.assign polyfill based on
|
||
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
|
||
assign = function (target) {
|
||
var to = Object(target);
|
||
|
||
for (var index = 1; index < arguments.length; index++) {
|
||
var nextSource = arguments[index];
|
||
|
||
if (nextSource != null) { // Skip over if undefined or null
|
||
for (var nextKey in nextSource) {
|
||
// Avoid bugs when hasOwnProperty is shadowed
|
||
if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
|
||
to[nextKey] = nextSource[nextKey];
|
||
}
|
||
}
|
||
}
|
||
}
|
||
return to;
|
||
};
|
||
}
|
||
}
|
||
|
||
var $inject_Object_assign = assign;
|
||
|
||
class PouchError extends Error {
|
||
constructor(status, error, reason) {
|
||
super();
|
||
this.status = status;
|
||
this.name = error;
|
||
this.message = reason;
|
||
this.error = true;
|
||
}
|
||
|
||
toString() {
|
||
return JSON.stringify({
|
||
status: this.status,
|
||
name: this.name,
|
||
message: this.message,
|
||
reason: this.reason
|
||
});
|
||
}
|
||
}
|
||
|
||
var UNAUTHORIZED = new PouchError(401, 'unauthorized', "Name or password is incorrect.");
|
||
var MISSING_BULK_DOCS = new PouchError(400, 'bad_request', "Missing JSON list of 'docs'");
|
||
var MISSING_DOC = new PouchError(404, 'not_found', 'missing');
|
||
var REV_CONFLICT = new PouchError(409, 'conflict', 'Document update conflict');
|
||
var INVALID_ID = new PouchError(400, 'bad_request', '_id field must contain a string');
|
||
var MISSING_ID = new PouchError(412, 'missing_id', '_id is required for puts');
|
||
var RESERVED_ID = new PouchError(400, 'bad_request', 'Only reserved document ids may start with underscore.');
|
||
var NOT_OPEN = new PouchError(412, 'precondition_failed', 'Database not open');
|
||
var UNKNOWN_ERROR = new PouchError(500, 'unknown_error', 'Database encountered an unknown error');
|
||
var BAD_ARG = new PouchError(500, 'badarg', 'Some query argument is invalid');
|
||
var INVALID_REQUEST = new PouchError(400, 'invalid_request', 'Request was invalid');
|
||
var QUERY_PARSE_ERROR = new PouchError(400, 'query_parse_error', 'Some query parameter is invalid');
|
||
var DOC_VALIDATION = new PouchError(500, 'doc_validation', 'Bad special document member');
|
||
var BAD_REQUEST = new PouchError(400, 'bad_request', 'Something wrong with the request');
|
||
var NOT_AN_OBJECT = new PouchError(400, 'bad_request', 'Document must be a JSON object');
|
||
var DB_MISSING = new PouchError(404, 'not_found', 'Database not found');
|
||
var IDB_ERROR = new PouchError(500, 'indexed_db_went_bad', 'unknown');
|
||
var WSQ_ERROR = new PouchError(500, 'web_sql_went_bad', 'unknown');
|
||
var LDB_ERROR = new PouchError(500, 'levelDB_went_went_bad', 'unknown');
|
||
var FORBIDDEN = new PouchError(403, 'forbidden', 'Forbidden by design doc validate_doc_update function');
|
||
var INVALID_REV = new PouchError(400, 'bad_request', 'Invalid rev format');
|
||
var FILE_EXISTS = new PouchError(412, 'file_exists', 'The database could not be created, the file already exists.');
|
||
var MISSING_STUB = new PouchError(412, 'missing_stub', 'A pre-existing attachment stub wasn\'t found');
|
||
var INVALID_URL = new PouchError(413, 'invalid_url', 'Provided URL is invalid');
|
||
|
||
function createError(error, reason) {
|
||
function CustomPouchError(reason) {
|
||
// inherit error properties from our parent error manually
|
||
// so as to allow proper JSON parsing.
|
||
/* jshint ignore:start */
|
||
var names = Object.getOwnPropertyNames(error);
|
||
for (var i = 0, len = names.length; i < len; i++) {
|
||
if (typeof error[names[i]] !== 'function') {
|
||
this[names[i]] = error[names[i]];
|
||
}
|
||
}
|
||
|
||
if (this.stack === undefined) {
|
||
this.stack = (new Error()).stack;
|
||
}
|
||
|
||
/* jshint ignore:end */
|
||
if (reason !== undefined) {
|
||
this.reason = reason;
|
||
}
|
||
}
|
||
CustomPouchError.prototype = PouchError.prototype;
|
||
return new CustomPouchError(reason);
|
||
}
|
||
|
||
function generateErrorFromResponse(err) {
|
||
|
||
if (typeof err !== 'object') {
|
||
var data = err;
|
||
err = UNKNOWN_ERROR;
|
||
err.data = data;
|
||
}
|
||
|
||
if ('error' in err && err.error === 'conflict') {
|
||
err.name = 'conflict';
|
||
err.status = 409;
|
||
}
|
||
|
||
if (!('name' in err)) {
|
||
err.name = err.error || 'unknown';
|
||
}
|
||
|
||
if (!('status' in err)) {
|
||
err.status = 500;
|
||
}
|
||
|
||
if (!('message' in err)) {
|
||
err.message = err.message || err.reason;
|
||
}
|
||
|
||
if (!('stack' in err)) {
|
||
err.stack = (new Error()).stack;
|
||
}
|
||
|
||
return err;
|
||
}
|
||
|
||
function tryFilter(filter, doc, req) {
|
||
try {
|
||
return !filter(doc, req);
|
||
} catch (err) {
|
||
var msg = 'Filter function threw: ' + err.toString();
|
||
return createError(BAD_REQUEST, msg);
|
||
}
|
||
}
|
||
|
||
function filterChange(opts) {
|
||
var req = {};
|
||
var hasFilter = opts.filter && typeof opts.filter === 'function';
|
||
req.query = opts.query_params;
|
||
|
||
return function filter(change) {
|
||
if (!change.doc) {
|
||
// CSG sends events on the changes feed that don't have documents,
|
||
// this hack makes a whole lot of existing code robust.
|
||
change.doc = {};
|
||
}
|
||
|
||
var filterReturn = hasFilter && tryFilter(opts.filter, change.doc, req);
|
||
|
||
if (typeof filterReturn === 'object') {
|
||
return filterReturn;
|
||
}
|
||
|
||
if (filterReturn) {
|
||
return false;
|
||
}
|
||
|
||
if (!opts.include_docs) {
|
||
delete change.doc;
|
||
} else if (!opts.attachments) {
|
||
for (var att in change.doc._attachments) {
|
||
/* istanbul ignore else */
|
||
if (Object.prototype.hasOwnProperty.call(change.doc._attachments, att)) {
|
||
change.doc._attachments[att].stub = true;
|
||
}
|
||
}
|
||
}
|
||
return true;
|
||
};
|
||
}
|
||
|
||
function flatten(arrs) {
|
||
var res = [];
|
||
for (var i = 0, len = arrs.length; i < len; i++) {
|
||
res = res.concat(arrs[i]);
|
||
}
|
||
return res;
|
||
}
|
||
|
||
// shim for Function.prototype.name,
|
||
|
||
// Determine id an ID is valid
|
||
// - invalid IDs begin with an underescore that does not begin '_design' or
|
||
// '_local'
|
||
// - any other string value is a valid id
|
||
// Returns the specific error object for each case
|
||
function invalidIdError(id) {
|
||
var err;
|
||
if (!id) {
|
||
err = createError(MISSING_ID);
|
||
} else if (typeof id !== 'string') {
|
||
err = createError(INVALID_ID);
|
||
} else if (/^_/.test(id) && !(/^_(design|local)/).test(id)) {
|
||
err = createError(RESERVED_ID);
|
||
}
|
||
if (err) {
|
||
throw err;
|
||
}
|
||
}
|
||
|
||
// Checks if a PouchDB object is "remote" or not. This is
|
||
|
||
function isRemote(db) {
|
||
if (typeof db._remote === 'boolean') {
|
||
return db._remote;
|
||
}
|
||
/* istanbul ignore next */
|
||
if (typeof db.type === 'function') {
|
||
guardedConsole('warn',
|
||
'db.type() is deprecated and will be removed in ' +
|
||
'a future version of PouchDB');
|
||
return db.type() === 'http';
|
||
}
|
||
/* istanbul ignore next */
|
||
return false;
|
||
}
|
||
|
||
function listenerCount(ee, type) {
|
||
return 'listenerCount' in ee ? ee.listenerCount(type) :
|
||
EE.listenerCount(ee, type);
|
||
}
|
||
|
||
function parseDesignDocFunctionName(s) {
|
||
if (!s) {
|
||
return null;
|
||
}
|
||
var parts = s.split('/');
|
||
if (parts.length === 2) {
|
||
return parts;
|
||
}
|
||
if (parts.length === 1) {
|
||
return [s, s];
|
||
}
|
||
return null;
|
||
}
|
||
|
||
function normalizeDesignDocFunctionName(s) {
|
||
var normalized = parseDesignDocFunctionName(s);
|
||
return normalized ? normalized.join('/') : null;
|
||
}
|
||
|
||
// originally parseUri 1.2.2, now patched by us
|
||
// (c) Steven Levithan <stevenlevithan.com>
|
||
// MIT License
|
||
var keys = ["source", "protocol", "authority", "userInfo", "user", "password",
|
||
"host", "port", "relative", "path", "directory", "file", "query", "anchor"];
|
||
var qName ="queryKey";
|
||
var qParser = /(?:^|&)([^&=]*)=?([^&]*)/g;
|
||
|
||
// use the "loose" parser
|
||
/* eslint no-useless-escape: 0 */
|
||
var parser = /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
|
||
|
||
function parseUri(str) {
|
||
var m = parser.exec(str);
|
||
var uri = {};
|
||
var i = 14;
|
||
|
||
while (i--) {
|
||
var key = keys[i];
|
||
var value = m[i] || "";
|
||
var encoded = ['user', 'password'].indexOf(key) !== -1;
|
||
uri[key] = encoded ? decodeURIComponent(value) : value;
|
||
}
|
||
|
||
uri[qName] = {};
|
||
uri[keys[12]].replace(qParser, function ($0, $1, $2) {
|
||
if ($1) {
|
||
uri[qName][$1] = $2;
|
||
}
|
||
});
|
||
|
||
return uri;
|
||
}
|
||
|
||
// Based on https://github.com/alexdavid/scope-eval v0.0.3
|
||
// (source: https://unpkg.com/scope-eval@0.0.3/scope_eval.js)
|
||
// This is basically just a wrapper around new Function()
|
||
|
||
function scopeEval(source, scope) {
|
||
var keys = [];
|
||
var values = [];
|
||
for (var key in scope) {
|
||
if (Object.prototype.hasOwnProperty.call(scope, key)) {
|
||
keys.push(key);
|
||
values.push(scope[key]);
|
||
}
|
||
}
|
||
keys.push(source);
|
||
return Function.apply(null, keys).apply(null, values);
|
||
}
|
||
|
||
// this is essentially the "update sugar" function from daleharvey/pouchdb#1388
|
||
// the diffFun tells us what delta to apply to the doc. it either returns
|
||
// the doc, or false if it doesn't need to do an update after all
|
||
function upsert(db, docId, diffFun) {
|
||
return db.get(docId)
|
||
.catch(function (err) {
|
||
/* istanbul ignore next */
|
||
if (err.status !== 404) {
|
||
throw err;
|
||
}
|
||
return {};
|
||
})
|
||
.then(function (doc) {
|
||
// the user might change the _rev, so save it for posterity
|
||
var docRev = doc._rev;
|
||
var newDoc = diffFun(doc);
|
||
|
||
if (!newDoc) {
|
||
// if the diffFun returns falsy, we short-circuit as
|
||
// an optimization
|
||
return {updated: false, rev: docRev};
|
||
}
|
||
|
||
// users aren't allowed to modify these values,
|
||
// so reset them here
|
||
newDoc._id = docId;
|
||
newDoc._rev = docRev;
|
||
return tryAndPut(db, newDoc, diffFun);
|
||
});
|
||
}
|
||
|
||
function tryAndPut(db, doc, diffFun) {
|
||
return db.put(doc).then(function (res) {
|
||
return {
|
||
updated: true,
|
||
rev: res.rev
|
||
};
|
||
}, function (err) {
|
||
/* istanbul ignore next */
|
||
if (err.status !== 409) {
|
||
throw err;
|
||
}
|
||
return upsert(db, doc._id, diffFun);
|
||
});
|
||
}
|
||
|
||
var thisAtob = function (str) {
|
||
return atob(str);
|
||
};
|
||
|
||
var thisBtoa = function (str) {
|
||
return btoa(str);
|
||
};
|
||
|
||
// Abstracts constructing a Blob object, so it also works in older
|
||
// browsers that don't support the native Blob constructor (e.g.
|
||
// old QtWebKit versions, Android < 4.4).
|
||
function createBlob(parts, properties) {
|
||
/* global BlobBuilder,MSBlobBuilder,MozBlobBuilder,WebKitBlobBuilder */
|
||
parts = parts || [];
|
||
properties = properties || {};
|
||
try {
|
||
return new Blob(parts, properties);
|
||
} catch (e) {
|
||
if (e.name !== "TypeError") {
|
||
throw e;
|
||
}
|
||
var Builder = typeof BlobBuilder !== 'undefined' ? BlobBuilder :
|
||
typeof MSBlobBuilder !== 'undefined' ? MSBlobBuilder :
|
||
typeof MozBlobBuilder !== 'undefined' ? MozBlobBuilder :
|
||
WebKitBlobBuilder;
|
||
var builder = new Builder();
|
||
for (var i = 0; i < parts.length; i += 1) {
|
||
builder.append(parts[i]);
|
||
}
|
||
return builder.getBlob(properties.type);
|
||
}
|
||
}
|
||
|
||
// From http://stackoverflow.com/questions/14967647/ (continues on next line)
|
||
// encode-decode-image-with-base64-breaks-image (2013-04-21)
|
||
function binaryStringToArrayBuffer(bin) {
|
||
var length = bin.length;
|
||
var buf = new ArrayBuffer(length);
|
||
var arr = new Uint8Array(buf);
|
||
for (var i = 0; i < length; i++) {
|
||
arr[i] = bin.charCodeAt(i);
|
||
}
|
||
return buf;
|
||
}
|
||
|
||
function binStringToBluffer(binString, type) {
|
||
return createBlob([binaryStringToArrayBuffer(binString)], {type: type});
|
||
}
|
||
|
||
function b64ToBluffer(b64, type) {
|
||
return binStringToBluffer(thisAtob(b64), type);
|
||
}
|
||
|
||
//Can't find original post, but this is close
|
||
//http://stackoverflow.com/questions/6965107/ (continues on next line)
|
||
//converting-between-strings-and-arraybuffers
|
||
function arrayBufferToBinaryString(buffer) {
|
||
var binary = '';
|
||
var bytes = new Uint8Array(buffer);
|
||
var length = bytes.byteLength;
|
||
for (var i = 0; i < length; i++) {
|
||
binary += String.fromCharCode(bytes[i]);
|
||
}
|
||
return binary;
|
||
}
|
||
|
||
// shim for browsers that don't support it
|
||
function readAsBinaryString(blob, callback) {
|
||
var reader = new FileReader();
|
||
var hasBinaryString = typeof reader.readAsBinaryString === 'function';
|
||
reader.onloadend = function (e) {
|
||
var result = e.target.result || '';
|
||
if (hasBinaryString) {
|
||
return callback(result);
|
||
}
|
||
callback(arrayBufferToBinaryString(result));
|
||
};
|
||
if (hasBinaryString) {
|
||
reader.readAsBinaryString(blob);
|
||
} else {
|
||
reader.readAsArrayBuffer(blob);
|
||
}
|
||
}
|
||
|
||
function blobToBinaryString(blobOrBuffer, callback) {
|
||
readAsBinaryString(blobOrBuffer, function (bin) {
|
||
callback(bin);
|
||
});
|
||
}
|
||
|
||
function blobToBase64(blobOrBuffer, callback) {
|
||
blobToBinaryString(blobOrBuffer, function (base64) {
|
||
callback(thisBtoa(base64));
|
||
});
|
||
}
|
||
|
||
// simplified API. universal browser support is assumed
|
||
function readAsArrayBuffer(blob, callback) {
|
||
var reader = new FileReader();
|
||
reader.onloadend = function (e) {
|
||
var result = e.target.result || new ArrayBuffer(0);
|
||
callback(result);
|
||
};
|
||
reader.readAsArrayBuffer(blob);
|
||
}
|
||
|
||
// this is not used in the browser
|
||
|
||
var setImmediateShim = self.setImmediate || self.setTimeout;
|
||
var MD5_CHUNK_SIZE = 32768;
|
||
|
||
function rawToBase64(raw) {
|
||
return thisBtoa(raw);
|
||
}
|
||
|
||
function sliceBlob(blob, start, end) {
|
||
if (blob.webkitSlice) {
|
||
return blob.webkitSlice(start, end);
|
||
}
|
||
return blob.slice(start, end);
|
||
}
|
||
|
||
function appendBlob(buffer, blob, start, end, callback) {
|
||
if (start > 0 || end < blob.size) {
|
||
// only slice blob if we really need to
|
||
blob = sliceBlob(blob, start, end);
|
||
}
|
||
readAsArrayBuffer(blob, function (arrayBuffer) {
|
||
buffer.append(arrayBuffer);
|
||
callback();
|
||
});
|
||
}
|
||
|
||
function appendString(buffer, string, start, end, callback) {
|
||
if (start > 0 || end < string.length) {
|
||
// only create a substring if we really need to
|
||
string = string.substring(start, end);
|
||
}
|
||
buffer.appendBinary(string);
|
||
callback();
|
||
}
|
||
|
||
function binaryMd5(data, callback) {
|
||
var inputIsString = typeof data === 'string';
|
||
var len = inputIsString ? data.length : data.size;
|
||
var chunkSize = Math.min(MD5_CHUNK_SIZE, len);
|
||
var chunks = Math.ceil(len / chunkSize);
|
||
var currentChunk = 0;
|
||
var buffer = inputIsString ? new Md5() : new Md5.ArrayBuffer();
|
||
|
||
var append = inputIsString ? appendString : appendBlob;
|
||
|
||
function next() {
|
||
setImmediateShim(loadNextChunk);
|
||
}
|
||
|
||
function done() {
|
||
var raw = buffer.end(true);
|
||
var base64 = rawToBase64(raw);
|
||
callback(base64);
|
||
buffer.destroy();
|
||
}
|
||
|
||
function loadNextChunk() {
|
||
var start = currentChunk * chunkSize;
|
||
var end = start + chunkSize;
|
||
currentChunk++;
|
||
if (currentChunk < chunks) {
|
||
append(buffer, data, start, end, next);
|
||
} else {
|
||
append(buffer, data, start, end, done);
|
||
}
|
||
}
|
||
loadNextChunk();
|
||
}
|
||
|
||
function stringMd5(string) {
|
||
return Md5.hash(string);
|
||
}
|
||
|
||
/**
|
||
* Creates a new revision string that does NOT include the revision height
|
||
* For example '56649f1b0506c6ca9fda0746eb0cacdf'
|
||
*/
|
||
function rev$$1(doc, deterministic_revs) {
|
||
if (!deterministic_revs) {
|
||
return v4().replace(/-/g, '').toLowerCase();
|
||
}
|
||
|
||
var mutateableDoc = $inject_Object_assign({}, doc);
|
||
delete mutateableDoc._rev_tree;
|
||
return stringMd5(JSON.stringify(mutateableDoc));
|
||
}
|
||
|
||
var uuid = v4; // mimic old import, only v4 is ever used elsewhere
|
||
|
||
// We fetch all leafs of the revision tree, and sort them based on tree length
|
||
// and whether they were deleted, undeleted documents with the longest revision
|
||
// tree (most edits) win
|
||
// The final sort algorithm is slightly documented in a sidebar here:
|
||
// http://guide.couchdb.org/draft/conflicts.html
|
||
function winningRev(metadata) {
|
||
var winningId;
|
||
var winningPos;
|
||
var winningDeleted;
|
||
var toVisit = metadata.rev_tree.slice();
|
||
var node;
|
||
while ((node = toVisit.pop())) {
|
||
var tree = node.ids;
|
||
var branches = tree[2];
|
||
var pos = node.pos;
|
||
if (branches.length) { // non-leaf
|
||
for (var i = 0, len = branches.length; i < len; i++) {
|
||
toVisit.push({pos: pos + 1, ids: branches[i]});
|
||
}
|
||
continue;
|
||
}
|
||
var deleted = !!tree[1].deleted;
|
||
var id = tree[0];
|
||
// sort by deleted, then pos, then id
|
||
if (!winningId || (winningDeleted !== deleted ? winningDeleted :
|
||
winningPos !== pos ? winningPos < pos : winningId < id)) {
|
||
winningId = id;
|
||
winningPos = pos;
|
||
winningDeleted = deleted;
|
||
}
|
||
}
|
||
|
||
return winningPos + '-' + winningId;
|
||
}
|
||
|
||
// Pretty much all below can be combined into a higher order function to
|
||
// traverse revisions
|
||
// The return value from the callback will be passed as context to all
|
||
// children of that node
|
||
function traverseRevTree(revs, callback) {
|
||
var toVisit = revs.slice();
|
||
|
||
var node;
|
||
while ((node = toVisit.pop())) {
|
||
var pos = node.pos;
|
||
var tree = node.ids;
|
||
var branches = tree[2];
|
||
var newCtx =
|
||
callback(branches.length === 0, pos, tree[0], node.ctx, tree[1]);
|
||
for (var i = 0, len = branches.length; i < len; i++) {
|
||
toVisit.push({pos: pos + 1, ids: branches[i], ctx: newCtx});
|
||
}
|
||
}
|
||
}
|
||
|
||
function sortByPos(a, b) {
|
||
return a.pos - b.pos;
|
||
}
|
||
|
||
function collectLeaves(revs) {
|
||
var leaves = [];
|
||
traverseRevTree(revs, function (isLeaf, pos, id, acc, opts) {
|
||
if (isLeaf) {
|
||
leaves.push({rev: pos + "-" + id, pos: pos, opts: opts});
|
||
}
|
||
});
|
||
leaves.sort(sortByPos).reverse();
|
||
for (var i = 0, len = leaves.length; i < len; i++) {
|
||
delete leaves[i].pos;
|
||
}
|
||
return leaves;
|
||
}
|
||
|
||
// returns revs of all conflicts that is leaves such that
|
||
// 1. are not deleted and
|
||
// 2. are different than winning revision
|
||
function collectConflicts(metadata) {
|
||
var win = winningRev(metadata);
|
||
var leaves = collectLeaves(metadata.rev_tree);
|
||
var conflicts = [];
|
||
for (var i = 0, len = leaves.length; i < len; i++) {
|
||
var leaf = leaves[i];
|
||
if (leaf.rev !== win && !leaf.opts.deleted) {
|
||
conflicts.push(leaf.rev);
|
||
}
|
||
}
|
||
return conflicts;
|
||
}
|
||
|
||
// compact a tree by marking its non-leafs as missing,
|
||
// and return a list of revs to delete
|
||
function compactTree(metadata) {
|
||
var revs = [];
|
||
traverseRevTree(metadata.rev_tree, function (isLeaf, pos,
|
||
revHash, ctx, opts) {
|
||
if (opts.status === 'available' && !isLeaf) {
|
||
revs.push(pos + '-' + revHash);
|
||
opts.status = 'missing';
|
||
}
|
||
});
|
||
return revs;
|
||
}
|
||
|
||
// `findPathToLeaf()` returns an array of revs that goes from the specified
|
||
// leaf rev to the root of that leaf’s branch.
|
||
//
|
||
// eg. for this rev tree:
|
||
// 1-9692 ▶ 2-37aa ▶ 3-df22 ▶ 4-6e94 ▶ 5-df4a ▶ 6-6a3a ▶ 7-57e5
|
||
// ┃ ┗━━━━━━▶ 5-8d8c ▶ 6-65e0
|
||
// ┗━━━━━━▶ 3-43f6 ▶ 4-a3b4
|
||
//
|
||
// For a `targetRev` of '7-57e5', `findPathToLeaf()` would return ['7-57e5', '6-6a3a', '5-df4a']
|
||
// The `revs` arument has the same structure as what `revs_tree` has on e.g.
|
||
// the IndexedDB representation of the rev tree datastructure. Please refer to
|
||
// tests/unit/test.purge.js for examples of what these look like.
|
||
//
|
||
// This function will throw an error if:
|
||
// - The requested revision does not exist
|
||
// - The requested revision is not a leaf
|
||
function findPathToLeaf(revs, targetRev) {
|
||
let path = [];
|
||
const toVisit = revs.slice();
|
||
|
||
let node;
|
||
while ((node = toVisit.pop())) {
|
||
const { pos, ids: tree } = node;
|
||
const rev = `${pos}-${tree[0]}`;
|
||
const branches = tree[2];
|
||
|
||
// just assuming we're already working on the path up towards our desired leaf.
|
||
path.push(rev);
|
||
|
||
// we've reached the leaf of our dreams, so return the computed path.
|
||
if (rev === targetRev) {
|
||
//…unleeeeess
|
||
if (branches.length !== 0) {
|
||
throw new Error('The requested revision is not a leaf');
|
||
}
|
||
return path.reverse();
|
||
}
|
||
|
||
// this is based on the assumption that after we have a leaf (`branches.length == 0`), we handle the next
|
||
// branch. this is true for all branches other than the path leading to the winning rev (which is 7-57e5 in
|
||
// the example above. i've added a reset condition for branching nodes (`branches.length > 1`) as well.
|
||
if (branches.length === 0 || branches.length > 1) {
|
||
path = [];
|
||
}
|
||
|
||
// as a next step, we push the branches of this node to `toVisit` for visiting it during the next iteration
|
||
for (let i = 0, len = branches.length; i < len; i++) {
|
||
toVisit.push({ pos: pos + 1, ids: branches[i] });
|
||
}
|
||
}
|
||
if (path.length === 0) {
|
||
throw new Error('The requested revision does not exist');
|
||
}
|
||
return path.reverse();
|
||
}
|
||
|
||
// build up a list of all the paths to the leafs in this revision tree
|
||
function rootToLeaf(revs) {
|
||
var paths = [];
|
||
var toVisit = revs.slice();
|
||
var node;
|
||
while ((node = toVisit.pop())) {
|
||
var pos = node.pos;
|
||
var tree = node.ids;
|
||
var id = tree[0];
|
||
var opts = tree[1];
|
||
var branches = tree[2];
|
||
var isLeaf = branches.length === 0;
|
||
|
||
var history = node.history ? node.history.slice() : [];
|
||
history.push({id: id, opts: opts});
|
||
if (isLeaf) {
|
||
paths.push({pos: (pos + 1 - history.length), ids: history});
|
||
}
|
||
for (var i = 0, len = branches.length; i < len; i++) {
|
||
toVisit.push({pos: pos + 1, ids: branches[i], history: history});
|
||
}
|
||
}
|
||
return paths.reverse();
|
||
}
|
||
|
||
// for a better overview of what this is doing, read:
|
||
|
||
function sortByPos$1(a, b) {
|
||
return a.pos - b.pos;
|
||
}
|
||
|
||
// classic binary search
|
||
function binarySearch(arr, item, comparator) {
|
||
var low = 0;
|
||
var high = arr.length;
|
||
var mid;
|
||
while (low < high) {
|
||
mid = (low + high) >>> 1;
|
||
if (comparator(arr[mid], item) < 0) {
|
||
low = mid + 1;
|
||
} else {
|
||
high = mid;
|
||
}
|
||
}
|
||
return low;
|
||
}
|
||
|
||
// assuming the arr is sorted, insert the item in the proper place
|
||
function insertSorted(arr, item, comparator) {
|
||
var idx = binarySearch(arr, item, comparator);
|
||
arr.splice(idx, 0, item);
|
||
}
|
||
|
||
// Turn a path as a flat array into a tree with a single branch.
|
||
// If any should be stemmed from the beginning of the array, that's passed
|
||
// in as the second argument
|
||
function pathToTree(path, numStemmed) {
|
||
var root;
|
||
var leaf;
|
||
for (var i = numStemmed, len = path.length; i < len; i++) {
|
||
var node = path[i];
|
||
var currentLeaf = [node.id, node.opts, []];
|
||
if (leaf) {
|
||
leaf[2].push(currentLeaf);
|
||
leaf = currentLeaf;
|
||
} else {
|
||
root = leaf = currentLeaf;
|
||
}
|
||
}
|
||
return root;
|
||
}
|
||
|
||
// compare the IDs of two trees
|
||
function compareTree(a, b) {
|
||
return a[0] < b[0] ? -1 : 1;
|
||
}
|
||
|
||
// Merge two trees together
|
||
// The roots of tree1 and tree2 must be the same revision
|
||
function mergeTree(in_tree1, in_tree2) {
|
||
var queue = [{tree1: in_tree1, tree2: in_tree2}];
|
||
var conflicts = false;
|
||
while (queue.length > 0) {
|
||
var item = queue.pop();
|
||
var tree1 = item.tree1;
|
||
var tree2 = item.tree2;
|
||
|
||
if (tree1[1].status || tree2[1].status) {
|
||
tree1[1].status =
|
||
(tree1[1].status === 'available' ||
|
||
tree2[1].status === 'available') ? 'available' : 'missing';
|
||
}
|
||
|
||
for (var i = 0; i < tree2[2].length; i++) {
|
||
if (!tree1[2][0]) {
|
||
conflicts = 'new_leaf';
|
||
tree1[2][0] = tree2[2][i];
|
||
continue;
|
||
}
|
||
|
||
var merged = false;
|
||
for (var j = 0; j < tree1[2].length; j++) {
|
||
if (tree1[2][j][0] === tree2[2][i][0]) {
|
||
queue.push({tree1: tree1[2][j], tree2: tree2[2][i]});
|
||
merged = true;
|
||
}
|
||
}
|
||
if (!merged) {
|
||
conflicts = 'new_branch';
|
||
insertSorted(tree1[2], tree2[2][i], compareTree);
|
||
}
|
||
}
|
||
}
|
||
return {conflicts: conflicts, tree: in_tree1};
|
||
}
|
||
|
||
function doMerge(tree, path, dontExpand) {
|
||
var restree = [];
|
||
var conflicts = false;
|
||
var merged = false;
|
||
var res;
|
||
|
||
if (!tree.length) {
|
||
return {tree: [path], conflicts: 'new_leaf'};
|
||
}
|
||
|
||
for (var i = 0, len = tree.length; i < len; i++) {
|
||
var branch = tree[i];
|
||
if (branch.pos === path.pos && branch.ids[0] === path.ids[0]) {
|
||
// Paths start at the same position and have the same root, so they need
|
||
// merged
|
||
res = mergeTree(branch.ids, path.ids);
|
||
restree.push({pos: branch.pos, ids: res.tree});
|
||
conflicts = conflicts || res.conflicts;
|
||
merged = true;
|
||
} else if (dontExpand !== true) {
|
||
// The paths start at a different position, take the earliest path and
|
||
// traverse up until it as at the same point from root as the path we
|
||
// want to merge. If the keys match we return the longer path with the
|
||
// other merged After stemming we dont want to expand the trees
|
||
|
||
var t1 = branch.pos < path.pos ? branch : path;
|
||
var t2 = branch.pos < path.pos ? path : branch;
|
||
var diff = t2.pos - t1.pos;
|
||
|
||
var candidateParents = [];
|
||
|
||
var trees = [];
|
||
trees.push({ids: t1.ids, diff: diff, parent: null, parentIdx: null});
|
||
while (trees.length > 0) {
|
||
var item = trees.pop();
|
||
if (item.diff === 0) {
|
||
if (item.ids[0] === t2.ids[0]) {
|
||
candidateParents.push(item);
|
||
}
|
||
continue;
|
||
}
|
||
var elements = item.ids[2];
|
||
for (var j = 0, elementsLen = elements.length; j < elementsLen; j++) {
|
||
trees.push({
|
||
ids: elements[j],
|
||
diff: item.diff - 1,
|
||
parent: item.ids,
|
||
parentIdx: j
|
||
});
|
||
}
|
||
}
|
||
|
||
var el = candidateParents[0];
|
||
|
||
if (!el) {
|
||
restree.push(branch);
|
||
} else {
|
||
res = mergeTree(el.ids, t2.ids);
|
||
el.parent[2][el.parentIdx] = res.tree;
|
||
restree.push({pos: t1.pos, ids: t1.ids});
|
||
conflicts = conflicts || res.conflicts;
|
||
merged = true;
|
||
}
|
||
} else {
|
||
restree.push(branch);
|
||
}
|
||
}
|
||
|
||
// We didnt find
|
||
if (!merged) {
|
||
restree.push(path);
|
||
}
|
||
|
||
restree.sort(sortByPos$1);
|
||
|
||
return {
|
||
tree: restree,
|
||
conflicts: conflicts || 'internal_node'
|
||
};
|
||
}
|
||
|
||
// To ensure we dont grow the revision tree infinitely, we stem old revisions
|
||
function stem(tree, depth) {
|
||
// First we break out the tree into a complete list of root to leaf paths
|
||
var paths = rootToLeaf(tree);
|
||
var stemmedRevs;
|
||
|
||
var result;
|
||
for (var i = 0, len = paths.length; i < len; i++) {
|
||
// Then for each path, we cut off the start of the path based on the
|
||
// `depth` to stem to, and generate a new set of flat trees
|
||
var path = paths[i];
|
||
var stemmed = path.ids;
|
||
var node;
|
||
if (stemmed.length > depth) {
|
||
// only do the stemming work if we actually need to stem
|
||
if (!stemmedRevs) {
|
||
stemmedRevs = {}; // avoid allocating this object unnecessarily
|
||
}
|
||
var numStemmed = stemmed.length - depth;
|
||
node = {
|
||
pos: path.pos + numStemmed,
|
||
ids: pathToTree(stemmed, numStemmed)
|
||
};
|
||
|
||
for (var s = 0; s < numStemmed; s++) {
|
||
var rev = (path.pos + s) + '-' + stemmed[s].id;
|
||
stemmedRevs[rev] = true;
|
||
}
|
||
} else { // no need to actually stem
|
||
node = {
|
||
pos: path.pos,
|
||
ids: pathToTree(stemmed, 0)
|
||
};
|
||
}
|
||
|
||
// Then we remerge all those flat trees together, ensuring that we dont
|
||
// connect trees that would go beyond the depth limit
|
||
if (result) {
|
||
result = doMerge(result, node, true).tree;
|
||
} else {
|
||
result = [node];
|
||
}
|
||
}
|
||
|
||
// this is memory-heavy per Chrome profiler, avoid unless we actually stemmed
|
||
if (stemmedRevs) {
|
||
traverseRevTree(result, function (isLeaf, pos, revHash) {
|
||
// some revisions may have been removed in a branch but not in another
|
||
delete stemmedRevs[pos + '-' + revHash];
|
||
});
|
||
}
|
||
|
||
return {
|
||
tree: result,
|
||
revs: stemmedRevs ? Object.keys(stemmedRevs) : []
|
||
};
|
||
}
|
||
|
||
function merge(tree, path, depth) {
|
||
var newTree = doMerge(tree, path);
|
||
var stemmed = stem(newTree.tree, depth);
|
||
return {
|
||
tree: stemmed.tree,
|
||
stemmedRevs: stemmed.revs,
|
||
conflicts: newTree.conflicts
|
||
};
|
||
}
|
||
|
||
// return true if a rev exists in the rev tree, false otherwise
|
||
function revExists(revs, rev) {
|
||
var toVisit = revs.slice();
|
||
var splitRev = rev.split('-');
|
||
var targetPos = parseInt(splitRev[0], 10);
|
||
var targetId = splitRev[1];
|
||
|
||
var node;
|
||
while ((node = toVisit.pop())) {
|
||
if (node.pos === targetPos && node.ids[0] === targetId) {
|
||
return true;
|
||
}
|
||
var branches = node.ids[2];
|
||
for (var i = 0, len = branches.length; i < len; i++) {
|
||
toVisit.push({pos: node.pos + 1, ids: branches[i]});
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
|
||
function getTrees(node) {
|
||
return node.ids;
|
||
}
|
||
|
||
// check if a specific revision of a doc has been deleted
|
||
// - metadata: the metadata object from the doc store
|
||
// - rev: (optional) the revision to check. defaults to winning revision
|
||
function isDeleted(metadata, rev) {
|
||
if (!rev) {
|
||
rev = winningRev(metadata);
|
||
}
|
||
var id = rev.substring(rev.indexOf('-') + 1);
|
||
var toVisit = metadata.rev_tree.map(getTrees);
|
||
|
||
var tree;
|
||
while ((tree = toVisit.pop())) {
|
||
if (tree[0] === id) {
|
||
return !!tree[1].deleted;
|
||
}
|
||
toVisit = toVisit.concat(tree[2]);
|
||
}
|
||
}
|
||
|
||
function isLocalId(id) {
|
||
return (/^_local/).test(id);
|
||
}
|
||
|
||
// returns the current leaf node for a given revision
|
||
function latest(rev, metadata) {
|
||
var toVisit = metadata.rev_tree.slice();
|
||
var node;
|
||
while ((node = toVisit.pop())) {
|
||
var pos = node.pos;
|
||
var tree = node.ids;
|
||
var id = tree[0];
|
||
var opts = tree[1];
|
||
var branches = tree[2];
|
||
var isLeaf = branches.length === 0;
|
||
|
||
var history = node.history ? node.history.slice() : [];
|
||
history.push({id: id, pos: pos, opts: opts});
|
||
|
||
if (isLeaf) {
|
||
for (var i = 0, len = history.length; i < len; i++) {
|
||
var historyNode = history[i];
|
||
var historyRev = historyNode.pos + '-' + historyNode.id;
|
||
|
||
if (historyRev === rev) {
|
||
// return the rev of this leaf
|
||
return pos + '-' + id;
|
||
}
|
||
}
|
||
}
|
||
|
||
for (var j = 0, l = branches.length; j < l; j++) {
|
||
toVisit.push({pos: pos + 1, ids: branches[j], history: history});
|
||
}
|
||
}
|
||
|
||
/* istanbul ignore next */
|
||
throw new Error('Unable to resolve latest revision for id ' + metadata.id + ', rev ' + rev);
|
||
}
|
||
|
||
function tryCatchInChangeListener(self, change, pending, lastSeq) {
|
||
// isolate try/catches to avoid V8 deoptimizations
|
||
try {
|
||
self.emit('change', change, pending, lastSeq);
|
||
} catch (e) {
|
||
guardedConsole('error', 'Error in .on("change", function):', e);
|
||
}
|
||
}
|
||
|
||
function processChange(doc, metadata, opts) {
|
||
var changeList = [{rev: doc._rev}];
|
||
if (opts.style === 'all_docs') {
|
||
changeList = collectLeaves(metadata.rev_tree)
|
||
.map(function (x) { return {rev: x.rev}; });
|
||
}
|
||
var change = {
|
||
id: metadata.id,
|
||
changes: changeList,
|
||
doc: doc
|
||
};
|
||
|
||
if (isDeleted(metadata, doc._rev)) {
|
||
change.deleted = true;
|
||
}
|
||
if (opts.conflicts) {
|
||
change.doc._conflicts = collectConflicts(metadata);
|
||
if (!change.doc._conflicts.length) {
|
||
delete change.doc._conflicts;
|
||
}
|
||
}
|
||
return change;
|
||
}
|
||
|
||
class Changes$1 extends EE {
|
||
constructor(db, opts, callback) {
|
||
super();
|
||
this.db = db;
|
||
opts = opts ? clone(opts) : {};
|
||
var complete = opts.complete = once((err, resp) => {
|
||
if (err) {
|
||
if (listenerCount(this, 'error') > 0) {
|
||
this.emit('error', err);
|
||
}
|
||
} else {
|
||
this.emit('complete', resp);
|
||
}
|
||
this.removeAllListeners();
|
||
db.removeListener('destroyed', onDestroy);
|
||
});
|
||
if (callback) {
|
||
this.on('complete', function (resp) {
|
||
callback(null, resp);
|
||
});
|
||
this.on('error', callback);
|
||
}
|
||
const onDestroy = () => {
|
||
this.cancel();
|
||
};
|
||
db.once('destroyed', onDestroy);
|
||
|
||
opts.onChange = (change, pending, lastSeq) => {
|
||
/* istanbul ignore if */
|
||
if (this.isCancelled) {
|
||
return;
|
||
}
|
||
tryCatchInChangeListener(this, change, pending, lastSeq);
|
||
};
|
||
|
||
var promise = new Promise(function (fulfill, reject) {
|
||
opts.complete = function (err, res) {
|
||
if (err) {
|
||
reject(err);
|
||
} else {
|
||
fulfill(res);
|
||
}
|
||
};
|
||
});
|
||
this.once('cancel', function () {
|
||
db.removeListener('destroyed', onDestroy);
|
||
opts.complete(null, {status: 'cancelled'});
|
||
});
|
||
this.then = promise.then.bind(promise);
|
||
this['catch'] = promise['catch'].bind(promise);
|
||
this.then(function (result) {
|
||
complete(null, result);
|
||
}, complete);
|
||
|
||
|
||
|
||
if (!db.taskqueue.isReady) {
|
||
db.taskqueue.addTask((failed) => {
|
||
if (failed) {
|
||
opts.complete(failed);
|
||
} else if (this.isCancelled) {
|
||
this.emit('cancel');
|
||
} else {
|
||
this.validateChanges(opts);
|
||
}
|
||
});
|
||
} else {
|
||
this.validateChanges(opts);
|
||
}
|
||
}
|
||
|
||
cancel() {
|
||
this.isCancelled = true;
|
||
if (this.db.taskqueue.isReady) {
|
||
this.emit('cancel');
|
||
}
|
||
}
|
||
|
||
validateChanges(opts) {
|
||
var callback = opts.complete;
|
||
|
||
/* istanbul ignore else */
|
||
if (PouchDB._changesFilterPlugin) {
|
||
PouchDB._changesFilterPlugin.validate(opts, (err) => {
|
||
if (err) {
|
||
return callback(err);
|
||
}
|
||
this.doChanges(opts);
|
||
});
|
||
} else {
|
||
this.doChanges(opts);
|
||
}
|
||
}
|
||
|
||
doChanges(opts) {
|
||
var callback = opts.complete;
|
||
|
||
opts = clone(opts);
|
||
if ('live' in opts && !('continuous' in opts)) {
|
||
opts.continuous = opts.live;
|
||
}
|
||
opts.processChange = processChange;
|
||
|
||
if (opts.since === 'latest') {
|
||
opts.since = 'now';
|
||
}
|
||
if (!opts.since) {
|
||
opts.since = 0;
|
||
}
|
||
if (opts.since === 'now') {
|
||
this.db.info().then((info) => {
|
||
/* istanbul ignore if */
|
||
if (this.isCancelled) {
|
||
callback(null, {status: 'cancelled'});
|
||
return;
|
||
}
|
||
opts.since = info.update_seq;
|
||
this.doChanges(opts);
|
||
}, callback);
|
||
return;
|
||
}
|
||
|
||
/* istanbul ignore else */
|
||
if (PouchDB._changesFilterPlugin) {
|
||
PouchDB._changesFilterPlugin.normalize(opts);
|
||
if (PouchDB._changesFilterPlugin.shouldFilter(this, opts)) {
|
||
return PouchDB._changesFilterPlugin.filter(this, opts);
|
||
}
|
||
} else {
|
||
['doc_ids', 'filter', 'selector', 'view'].forEach(function (key) {
|
||
if (key in opts) {
|
||
guardedConsole('warn',
|
||
'The "' + key + '" option was passed in to changes/replicate, ' +
|
||
'but pouchdb-changes-filter plugin is not installed, so it ' +
|
||
'was ignored. Please install the plugin to enable filtering.'
|
||
);
|
||
}
|
||
});
|
||
}
|
||
|
||
if (!('descending' in opts)) {
|
||
opts.descending = false;
|
||
}
|
||
|
||
// 0 and 1 should return 1 document
|
||
opts.limit = opts.limit === 0 ? 1 : opts.limit;
|
||
opts.complete = callback;
|
||
var newPromise = this.db._changes(opts);
|
||
/* istanbul ignore else */
|
||
if (newPromise && typeof newPromise.cancel === 'function') {
|
||
const cancel = this.cancel;
|
||
this.cancel = (...args) => {
|
||
newPromise.cancel();
|
||
cancel.apply(this, args);
|
||
};
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* A generic pouch adapter
|
||
*/
|
||
|
||
function compare(left, right) {
|
||
return left < right ? -1 : left > right ? 1 : 0;
|
||
}
|
||
|
||
// Wrapper for functions that call the bulkdocs api with a single doc,
|
||
// if the first result is an error, return an error
|
||
function yankError(callback, docId) {
|
||
return function (err, results) {
|
||
if (err || (results[0] && results[0].error)) {
|
||
err = err || results[0];
|
||
err.docId = docId;
|
||
callback(err);
|
||
} else {
|
||
callback(null, results.length ? results[0] : results);
|
||
}
|
||
};
|
||
}
|
||
|
||
// clean docs given to us by the user
|
||
function cleanDocs(docs) {
|
||
for (var i = 0; i < docs.length; i++) {
|
||
var doc = docs[i];
|
||
if (doc._deleted) {
|
||
delete doc._attachments; // ignore atts for deleted docs
|
||
} else if (doc._attachments) {
|
||
// filter out extraneous keys from _attachments
|
||
var atts = Object.keys(doc._attachments);
|
||
for (var j = 0; j < atts.length; j++) {
|
||
var att = atts[j];
|
||
doc._attachments[att] = pick(doc._attachments[att],
|
||
['data', 'digest', 'content_type', 'length', 'revpos', 'stub']);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// compare two docs, first by _id then by _rev
|
||
function compareByIdThenRev(a, b) {
|
||
var idCompare = compare(a._id, b._id);
|
||
if (idCompare !== 0) {
|
||
return idCompare;
|
||
}
|
||
var aStart = a._revisions ? a._revisions.start : 0;
|
||
var bStart = b._revisions ? b._revisions.start : 0;
|
||
return compare(aStart, bStart);
|
||
}
|
||
|
||
// for every node in a revision tree computes its distance from the closest
|
||
// leaf
|
||
function computeHeight(revs) {
|
||
var height = {};
|
||
var edges = [];
|
||
traverseRevTree(revs, function (isLeaf, pos, id, prnt) {
|
||
var rev = pos + "-" + id;
|
||
if (isLeaf) {
|
||
height[rev] = 0;
|
||
}
|
||
if (prnt !== undefined) {
|
||
edges.push({from: prnt, to: rev});
|
||
}
|
||
return rev;
|
||
});
|
||
|
||
edges.reverse();
|
||
edges.forEach(function (edge) {
|
||
if (height[edge.from] === undefined) {
|
||
height[edge.from] = 1 + height[edge.to];
|
||
} else {
|
||
height[edge.from] = Math.min(height[edge.from], 1 + height[edge.to]);
|
||
}
|
||
});
|
||
return height;
|
||
}
|
||
|
||
function allDocsKeysParse(opts) {
|
||
var keys = ('limit' in opts) ?
|
||
opts.keys.slice(opts.skip, opts.limit + opts.skip) :
|
||
(opts.skip > 0) ? opts.keys.slice(opts.skip) : opts.keys;
|
||
opts.keys = keys;
|
||
opts.skip = 0;
|
||
delete opts.limit;
|
||
if (opts.descending) {
|
||
keys.reverse();
|
||
opts.descending = false;
|
||
}
|
||
}
|
||
|
||
// all compaction is done in a queue, to avoid attaching
|
||
// too many listeners at once
|
||
function doNextCompaction(self) {
|
||
var task = self._compactionQueue[0];
|
||
var opts = task.opts;
|
||
var callback = task.callback;
|
||
self.get('_local/compaction').catch(function () {
|
||
return false;
|
||
}).then(function (doc) {
|
||
if (doc && doc.last_seq) {
|
||
opts.last_seq = doc.last_seq;
|
||
}
|
||
self._compact(opts, function (err, res) {
|
||
/* istanbul ignore if */
|
||
if (err) {
|
||
callback(err);
|
||
} else {
|
||
callback(null, res);
|
||
}
|
||
immediate(function () {
|
||
self._compactionQueue.shift();
|
||
if (self._compactionQueue.length) {
|
||
doNextCompaction(self);
|
||
}
|
||
});
|
||
});
|
||
});
|
||
}
|
||
|
||
function appendPurgeSeq(db, docId, rev) {
|
||
return db.get('_local/purges').then(function (doc) {
|
||
const purgeSeq = doc.purgeSeq + 1;
|
||
doc.purges.push({
|
||
docId,
|
||
rev,
|
||
purgeSeq,
|
||
});
|
||
if (doc.purges.length > self.purged_infos_limit) {
|
||
doc.purges.splice(0, doc.purges.length - self.purged_infos_limit);
|
||
}
|
||
doc.purgeSeq = purgeSeq;
|
||
return doc;
|
||
}).catch(function (err) {
|
||
if (err.status !== 404) {
|
||
throw err;
|
||
}
|
||
return {
|
||
_id: '_local/purges',
|
||
purges: [{
|
||
docId,
|
||
rev,
|
||
purgeSeq: 0,
|
||
}],
|
||
purgeSeq: 0,
|
||
};
|
||
}).then(function (doc) {
|
||
return db.put(doc);
|
||
});
|
||
}
|
||
|
||
function attachmentNameError(name) {
|
||
if (name.charAt(0) === '_') {
|
||
return name + ' is not a valid attachment name, attachment ' +
|
||
'names cannot start with \'_\'';
|
||
}
|
||
return false;
|
||
}
|
||
|
||
class AbstractPouchDB extends EE {
|
||
_setup() {
|
||
this.post = adapterFun('post', function (doc, opts, callback) {
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
if (typeof doc !== 'object' || Array.isArray(doc)) {
|
||
return callback(createError(NOT_AN_OBJECT));
|
||
}
|
||
this.bulkDocs({docs: [doc]}, opts, yankError(callback, doc._id));
|
||
}).bind(this);
|
||
|
||
this.put = adapterFun('put', function (doc, opts, cb) {
|
||
if (typeof opts === 'function') {
|
||
cb = opts;
|
||
opts = {};
|
||
}
|
||
if (typeof doc !== 'object' || Array.isArray(doc)) {
|
||
return cb(createError(NOT_AN_OBJECT));
|
||
}
|
||
invalidIdError(doc._id);
|
||
if (isLocalId(doc._id) && typeof this._putLocal === 'function') {
|
||
if (doc._deleted) {
|
||
return this._removeLocal(doc, cb);
|
||
} else {
|
||
return this._putLocal(doc, cb);
|
||
}
|
||
}
|
||
|
||
const putDoc = (next) => {
|
||
if (typeof this._put === 'function' && opts.new_edits !== false) {
|
||
this._put(doc, opts, next);
|
||
} else {
|
||
this.bulkDocs({docs: [doc]}, opts, yankError(next, doc._id));
|
||
}
|
||
};
|
||
|
||
if (opts.force && doc._rev) {
|
||
transformForceOptionToNewEditsOption();
|
||
putDoc(function (err) {
|
||
var result = err ? null : {ok: true, id: doc._id, rev: doc._rev};
|
||
cb(err, result);
|
||
});
|
||
} else {
|
||
putDoc(cb);
|
||
}
|
||
|
||
function transformForceOptionToNewEditsOption() {
|
||
var parts = doc._rev.split('-');
|
||
var oldRevId = parts[1];
|
||
var oldRevNum = parseInt(parts[0], 10);
|
||
|
||
var newRevNum = oldRevNum + 1;
|
||
var newRevId = rev$$1();
|
||
|
||
doc._revisions = {
|
||
start: newRevNum,
|
||
ids: [newRevId, oldRevId]
|
||
};
|
||
doc._rev = newRevNum + '-' + newRevId;
|
||
opts.new_edits = false;
|
||
}
|
||
}).bind(this);
|
||
|
||
this.putAttachment = adapterFun('putAttachment', function (docId, attachmentId, rev, blob, type) {
|
||
var api = this;
|
||
if (typeof type === 'function') {
|
||
type = blob;
|
||
blob = rev;
|
||
rev = null;
|
||
}
|
||
// Lets fix in https://github.com/pouchdb/pouchdb/issues/3267
|
||
/* istanbul ignore if */
|
||
if (typeof type === 'undefined') {
|
||
type = blob;
|
||
blob = rev;
|
||
rev = null;
|
||
}
|
||
if (!type) {
|
||
guardedConsole('warn', 'Attachment', attachmentId, 'on document', docId, 'is missing content_type');
|
||
}
|
||
|
||
function createAttachment(doc) {
|
||
var prevrevpos = '_rev' in doc ? parseInt(doc._rev, 10) : 0;
|
||
doc._attachments = doc._attachments || {};
|
||
doc._attachments[attachmentId] = {
|
||
content_type: type,
|
||
data: blob,
|
||
revpos: ++prevrevpos
|
||
};
|
||
return api.put(doc);
|
||
}
|
||
|
||
return api.get(docId).then(function (doc) {
|
||
if (doc._rev !== rev) {
|
||
throw createError(REV_CONFLICT);
|
||
}
|
||
|
||
return createAttachment(doc);
|
||
}, function (err) {
|
||
// create new doc
|
||
/* istanbul ignore else */
|
||
if (err.reason === MISSING_DOC.message) {
|
||
return createAttachment({_id: docId});
|
||
} else {
|
||
throw err;
|
||
}
|
||
});
|
||
}).bind(this);
|
||
|
||
this.removeAttachment = adapterFun('removeAttachment', function (docId, attachmentId, rev, callback) {
|
||
this.get(docId, (err, obj) => {
|
||
/* istanbul ignore if */
|
||
if (err) {
|
||
callback(err);
|
||
return;
|
||
}
|
||
if (obj._rev !== rev) {
|
||
callback(createError(REV_CONFLICT));
|
||
return;
|
||
}
|
||
/* istanbul ignore if */
|
||
if (!obj._attachments) {
|
||
return callback();
|
||
}
|
||
delete obj._attachments[attachmentId];
|
||
if (Object.keys(obj._attachments).length === 0) {
|
||
delete obj._attachments;
|
||
}
|
||
this.put(obj, callback);
|
||
});
|
||
}).bind(this);
|
||
|
||
this.remove = adapterFun('remove', function (docOrId, optsOrRev, opts, callback) {
|
||
var doc;
|
||
if (typeof optsOrRev === 'string') {
|
||
// id, rev, opts, callback style
|
||
doc = {
|
||
_id: docOrId,
|
||
_rev: optsOrRev
|
||
};
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
} else {
|
||
// doc, opts, callback style
|
||
doc = docOrId;
|
||
if (typeof optsOrRev === 'function') {
|
||
callback = optsOrRev;
|
||
opts = {};
|
||
} else {
|
||
callback = opts;
|
||
opts = optsOrRev;
|
||
}
|
||
}
|
||
opts = opts || {};
|
||
opts.was_delete = true;
|
||
var newDoc = {_id: doc._id, _rev: (doc._rev || opts.rev)};
|
||
newDoc._deleted = true;
|
||
if (isLocalId(newDoc._id) && typeof this._removeLocal === 'function') {
|
||
return this._removeLocal(doc, callback);
|
||
}
|
||
this.bulkDocs({docs: [newDoc]}, opts, yankError(callback, newDoc._id));
|
||
}).bind(this);
|
||
|
||
this.revsDiff = adapterFun('revsDiff', function (req, opts, callback) {
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
var ids = Object.keys(req);
|
||
|
||
if (!ids.length) {
|
||
return callback(null, {});
|
||
}
|
||
|
||
var count = 0;
|
||
var missing = new ExportedMap();
|
||
|
||
function addToMissing(id, revId) {
|
||
if (!missing.has(id)) {
|
||
missing.set(id, {missing: []});
|
||
}
|
||
missing.get(id).missing.push(revId);
|
||
}
|
||
|
||
function processDoc(id, rev_tree) {
|
||
// Is this fast enough? Maybe we should switch to a set simulated by a map
|
||
var missingForId = req[id].slice(0);
|
||
traverseRevTree(rev_tree, function (isLeaf, pos, revHash, ctx,
|
||
opts) {
|
||
var rev = pos + '-' + revHash;
|
||
var idx = missingForId.indexOf(rev);
|
||
if (idx === -1) {
|
||
return;
|
||
}
|
||
|
||
missingForId.splice(idx, 1);
|
||
/* istanbul ignore if */
|
||
if (opts.status !== 'available') {
|
||
addToMissing(id, rev);
|
||
}
|
||
});
|
||
|
||
// Traversing the tree is synchronous, so now `missingForId` contains
|
||
// revisions that were not found in the tree
|
||
missingForId.forEach(function (rev) {
|
||
addToMissing(id, rev);
|
||
});
|
||
}
|
||
|
||
ids.map(function (id) {
|
||
this._getRevisionTree(id, function (err, rev_tree) {
|
||
if (err && err.status === 404 && err.message === 'missing') {
|
||
missing.set(id, {missing: req[id]});
|
||
} else if (err) {
|
||
/* istanbul ignore next */
|
||
return callback(err);
|
||
} else {
|
||
processDoc(id, rev_tree);
|
||
}
|
||
|
||
if (++count === ids.length) {
|
||
// convert LazyMap to object
|
||
var missingObj = {};
|
||
missing.forEach(function (value, key) {
|
||
missingObj[key] = value;
|
||
});
|
||
return callback(null, missingObj);
|
||
}
|
||
});
|
||
}, this);
|
||
}).bind(this);
|
||
|
||
// _bulk_get API for faster replication, as described in
|
||
// https://github.com/apache/couchdb-chttpd/pull/33
|
||
// At the "abstract" level, it will just run multiple get()s in
|
||
// parallel, because this isn't much of a performance cost
|
||
// for local databases (except the cost of multiple transactions, which is
|
||
// small). The http adapter overrides this in order
|
||
// to do a more efficient single HTTP request.
|
||
this.bulkGet = adapterFun('bulkGet', function (opts, callback) {
|
||
bulkGet(this, opts, callback);
|
||
}).bind(this);
|
||
|
||
// compact one document and fire callback
|
||
// by compacting we mean removing all revisions which
|
||
// are further from the leaf in revision tree than max_height
|
||
this.compactDocument = adapterFun('compactDocument', function (docId, maxHeight, callback) {
|
||
this._getRevisionTree(docId, (err, revTree) => {
|
||
/* istanbul ignore if */
|
||
if (err) {
|
||
return callback(err);
|
||
}
|
||
var height = computeHeight(revTree);
|
||
var candidates = [];
|
||
var revs = [];
|
||
Object.keys(height).forEach(function (rev) {
|
||
if (height[rev] > maxHeight) {
|
||
candidates.push(rev);
|
||
}
|
||
});
|
||
|
||
traverseRevTree(revTree, function (isLeaf, pos, revHash, ctx, opts) {
|
||
var rev = pos + '-' + revHash;
|
||
if (opts.status === 'available' && candidates.indexOf(rev) !== -1) {
|
||
revs.push(rev);
|
||
}
|
||
});
|
||
this._doCompaction(docId, revs, callback);
|
||
});
|
||
}).bind(this);
|
||
|
||
// compact the whole database using single document
|
||
// compaction
|
||
this.compact = adapterFun('compact', function (opts, callback) {
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
|
||
opts = opts || {};
|
||
|
||
this._compactionQueue = this._compactionQueue || [];
|
||
this._compactionQueue.push({opts: opts, callback: callback});
|
||
if (this._compactionQueue.length === 1) {
|
||
doNextCompaction(this);
|
||
}
|
||
}).bind(this);
|
||
|
||
/* Begin api wrappers. Specific functionality to storage belongs in the _[method] */
|
||
this.get = adapterFun('get', function (id, opts, cb) {
|
||
if (typeof opts === 'function') {
|
||
cb = opts;
|
||
opts = {};
|
||
}
|
||
if (typeof id !== 'string') {
|
||
return cb(createError(INVALID_ID));
|
||
}
|
||
if (isLocalId(id) && typeof this._getLocal === 'function') {
|
||
return this._getLocal(id, cb);
|
||
}
|
||
var leaves = [];
|
||
|
||
const finishOpenRevs = () => {
|
||
var result = [];
|
||
var count = leaves.length;
|
||
/* istanbul ignore if */
|
||
if (!count) {
|
||
return cb(null, result);
|
||
}
|
||
|
||
// order with open_revs is unspecified
|
||
leaves.forEach((leaf) => {
|
||
this.get(id, {
|
||
rev: leaf,
|
||
revs: opts.revs,
|
||
latest: opts.latest,
|
||
attachments: opts.attachments,
|
||
binary: opts.binary
|
||
}, function (err, doc) {
|
||
if (!err) {
|
||
// using latest=true can produce duplicates
|
||
var existing;
|
||
for (var i = 0, l = result.length; i < l; i++) {
|
||
if (result[i].ok && result[i].ok._rev === doc._rev) {
|
||
existing = true;
|
||
break;
|
||
}
|
||
}
|
||
if (!existing) {
|
||
result.push({ok: doc});
|
||
}
|
||
} else {
|
||
result.push({missing: leaf});
|
||
}
|
||
count--;
|
||
if (!count) {
|
||
cb(null, result);
|
||
}
|
||
});
|
||
});
|
||
};
|
||
|
||
if (opts.open_revs) {
|
||
if (opts.open_revs === "all") {
|
||
this._getRevisionTree(id, function (err, rev_tree) {
|
||
/* istanbul ignore if */
|
||
if (err) {
|
||
return cb(err);
|
||
}
|
||
leaves = collectLeaves(rev_tree).map(function (leaf) {
|
||
return leaf.rev;
|
||
});
|
||
finishOpenRevs();
|
||
});
|
||
} else {
|
||
if (Array.isArray(opts.open_revs)) {
|
||
leaves = opts.open_revs;
|
||
for (var i = 0; i < leaves.length; i++) {
|
||
var l = leaves[i];
|
||
// looks like it's the only thing couchdb checks
|
||
if (!(typeof (l) === "string" && /^\d+-/.test(l))) {
|
||
return cb(createError(INVALID_REV));
|
||
}
|
||
}
|
||
finishOpenRevs();
|
||
} else {
|
||
return cb(createError(UNKNOWN_ERROR, 'function_clause'));
|
||
}
|
||
}
|
||
return; // open_revs does not like other options
|
||
}
|
||
|
||
return this._get(id, opts, (err, result) => {
|
||
if (err) {
|
||
err.docId = id;
|
||
return cb(err);
|
||
}
|
||
|
||
var doc = result.doc;
|
||
var metadata = result.metadata;
|
||
var ctx = result.ctx;
|
||
|
||
if (opts.conflicts) {
|
||
var conflicts = collectConflicts(metadata);
|
||
if (conflicts.length) {
|
||
doc._conflicts = conflicts;
|
||
}
|
||
}
|
||
|
||
if (isDeleted(metadata, doc._rev)) {
|
||
doc._deleted = true;
|
||
}
|
||
|
||
if (opts.revs || opts.revs_info) {
|
||
var splittedRev = doc._rev.split('-');
|
||
var revNo = parseInt(splittedRev[0], 10);
|
||
var revHash = splittedRev[1];
|
||
|
||
var paths = rootToLeaf(metadata.rev_tree);
|
||
var path = null;
|
||
|
||
for (var i = 0; i < paths.length; i++) {
|
||
var currentPath = paths[i];
|
||
var hashIndex = currentPath.ids.map(function (x) { return x.id; })
|
||
.indexOf(revHash);
|
||
var hashFoundAtRevPos = hashIndex === (revNo - 1);
|
||
|
||
if (hashFoundAtRevPos || (!path && hashIndex !== -1)) {
|
||
path = currentPath;
|
||
}
|
||
}
|
||
|
||
/* istanbul ignore if */
|
||
if (!path) {
|
||
err = new Error('invalid rev tree');
|
||
err.docId = id;
|
||
return cb(err);
|
||
}
|
||
|
||
var indexOfRev = path.ids.map(function (x) { return x.id; })
|
||
.indexOf(doc._rev.split('-')[1]) + 1;
|
||
var howMany = path.ids.length - indexOfRev;
|
||
path.ids.splice(indexOfRev, howMany);
|
||
path.ids.reverse();
|
||
|
||
if (opts.revs) {
|
||
doc._revisions = {
|
||
start: (path.pos + path.ids.length) - 1,
|
||
ids: path.ids.map(function (rev) {
|
||
return rev.id;
|
||
})
|
||
};
|
||
}
|
||
if (opts.revs_info) {
|
||
var pos = path.pos + path.ids.length;
|
||
doc._revs_info = path.ids.map(function (rev) {
|
||
pos--;
|
||
return {
|
||
rev: pos + '-' + rev.id,
|
||
status: rev.opts.status
|
||
};
|
||
});
|
||
}
|
||
}
|
||
|
||
if (opts.attachments && doc._attachments) {
|
||
var attachments = doc._attachments;
|
||
var count = Object.keys(attachments).length;
|
||
if (count === 0) {
|
||
return cb(null, doc);
|
||
}
|
||
Object.keys(attachments).forEach((key) => {
|
||
this._getAttachment(doc._id, key, attachments[key], {
|
||
// Previously the revision handling was done in adapter.js
|
||
// getAttachment, however since idb-next doesnt we need to
|
||
// pass the rev through
|
||
rev: doc._rev,
|
||
binary: opts.binary,
|
||
ctx: ctx
|
||
}, function (err, data) {
|
||
var att = doc._attachments[key];
|
||
att.data = data;
|
||
delete att.stub;
|
||
delete att.length;
|
||
if (!--count) {
|
||
cb(null, doc);
|
||
}
|
||
});
|
||
});
|
||
} else {
|
||
if (doc._attachments) {
|
||
for (var key in doc._attachments) {
|
||
/* istanbul ignore else */
|
||
if (Object.prototype.hasOwnProperty.call(doc._attachments, key)) {
|
||
doc._attachments[key].stub = true;
|
||
}
|
||
}
|
||
}
|
||
cb(null, doc);
|
||
}
|
||
});
|
||
}).bind(this);
|
||
|
||
// TODO: I dont like this, it forces an extra read for every
|
||
// attachment read and enforces a confusing api between
|
||
// adapter.js and the adapter implementation
|
||
this.getAttachment = adapterFun('getAttachment', function (docId, attachmentId, opts, callback) {
|
||
if (opts instanceof Function) {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
this._get(docId, opts, (err, res) => {
|
||
if (err) {
|
||
return callback(err);
|
||
}
|
||
if (res.doc._attachments && res.doc._attachments[attachmentId]) {
|
||
opts.ctx = res.ctx;
|
||
opts.binary = true;
|
||
this._getAttachment(docId, attachmentId,
|
||
res.doc._attachments[attachmentId], opts, callback);
|
||
} else {
|
||
return callback(createError(MISSING_DOC));
|
||
}
|
||
});
|
||
}).bind(this);
|
||
|
||
this.allDocs = adapterFun('allDocs', function (opts, callback) {
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
opts.skip = typeof opts.skip !== 'undefined' ? opts.skip : 0;
|
||
if (opts.start_key) {
|
||
opts.startkey = opts.start_key;
|
||
}
|
||
if (opts.end_key) {
|
||
opts.endkey = opts.end_key;
|
||
}
|
||
if ('keys' in opts) {
|
||
if (!Array.isArray(opts.keys)) {
|
||
return callback(new TypeError('options.keys must be an array'));
|
||
}
|
||
var incompatibleOpt =
|
||
['startkey', 'endkey', 'key'].filter(function (incompatibleOpt) {
|
||
return incompatibleOpt in opts;
|
||
})[0];
|
||
if (incompatibleOpt) {
|
||
callback(createError(QUERY_PARSE_ERROR,
|
||
'Query parameter `' + incompatibleOpt +
|
||
'` is not compatible with multi-get'
|
||
));
|
||
return;
|
||
}
|
||
if (!isRemote(this)) {
|
||
allDocsKeysParse(opts);
|
||
if (opts.keys.length === 0) {
|
||
return this._allDocs({limit: 0}, callback);
|
||
}
|
||
}
|
||
}
|
||
|
||
return this._allDocs(opts, callback);
|
||
}).bind(this);
|
||
|
||
this.close = adapterFun('close', function (callback) {
|
||
this._closed = true;
|
||
this.emit('closed');
|
||
return this._close(callback);
|
||
}).bind(this);
|
||
|
||
this.info = adapterFun('info', function (callback) {
|
||
this._info((err, info) => {
|
||
if (err) {
|
||
return callback(err);
|
||
}
|
||
// assume we know better than the adapter, unless it informs us
|
||
info.db_name = info.db_name || this.name;
|
||
info.auto_compaction = !!(this.auto_compaction && !isRemote(this));
|
||
info.adapter = this.adapter;
|
||
callback(null, info);
|
||
});
|
||
}).bind(this);
|
||
|
||
this.id = adapterFun('id', function (callback) {
|
||
return this._id(callback);
|
||
}).bind(this);
|
||
|
||
this.bulkDocs = adapterFun('bulkDocs', function (req, opts, callback) {
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
|
||
opts = opts || {};
|
||
|
||
if (Array.isArray(req)) {
|
||
req = {
|
||
docs: req
|
||
};
|
||
}
|
||
|
||
if (!req || !req.docs || !Array.isArray(req.docs)) {
|
||
return callback(createError(MISSING_BULK_DOCS));
|
||
}
|
||
|
||
for (var i = 0; i < req.docs.length; ++i) {
|
||
if (typeof req.docs[i] !== 'object' || Array.isArray(req.docs[i])) {
|
||
return callback(createError(NOT_AN_OBJECT));
|
||
}
|
||
}
|
||
|
||
var attachmentError;
|
||
req.docs.forEach(function (doc) {
|
||
if (doc._attachments) {
|
||
Object.keys(doc._attachments).forEach(function (name) {
|
||
attachmentError = attachmentError || attachmentNameError(name);
|
||
if (!doc._attachments[name].content_type) {
|
||
guardedConsole('warn', 'Attachment', name, 'on document', doc._id, 'is missing content_type');
|
||
}
|
||
});
|
||
}
|
||
});
|
||
|
||
if (attachmentError) {
|
||
return callback(createError(BAD_REQUEST, attachmentError));
|
||
}
|
||
|
||
if (!('new_edits' in opts)) {
|
||
if ('new_edits' in req) {
|
||
opts.new_edits = req.new_edits;
|
||
} else {
|
||
opts.new_edits = true;
|
||
}
|
||
}
|
||
|
||
var adapter = this;
|
||
if (!opts.new_edits && !isRemote(adapter)) {
|
||
// ensure revisions of the same doc are sorted, so that
|
||
// the local adapter processes them correctly (#2935)
|
||
req.docs.sort(compareByIdThenRev);
|
||
}
|
||
|
||
cleanDocs(req.docs);
|
||
|
||
// in the case of conflicts, we want to return the _ids to the user
|
||
// however, the underlying adapter may destroy the docs array, so
|
||
// create a copy here
|
||
var ids = req.docs.map(function (doc) {
|
||
return doc._id;
|
||
});
|
||
|
||
this._bulkDocs(req, opts, function (err, res) {
|
||
if (err) {
|
||
return callback(err);
|
||
}
|
||
if (!opts.new_edits) {
|
||
// this is what couch does when new_edits is false
|
||
res = res.filter(function (x) {
|
||
return x.error;
|
||
});
|
||
}
|
||
// add ids for error/conflict responses (not required for CouchDB)
|
||
if (!isRemote(adapter)) {
|
||
for (var i = 0, l = res.length; i < l; i++) {
|
||
res[i].id = res[i].id || ids[i];
|
||
}
|
||
}
|
||
|
||
callback(null, res);
|
||
});
|
||
}).bind(this);
|
||
|
||
this.registerDependentDatabase = adapterFun('registerDependentDatabase', function (dependentDb, callback) {
|
||
var dbOptions = clone(this.__opts);
|
||
if (this.__opts.view_adapter) {
|
||
dbOptions.adapter = this.__opts.view_adapter;
|
||
}
|
||
|
||
var depDB = new this.constructor(dependentDb, dbOptions);
|
||
|
||
function diffFun(doc) {
|
||
doc.dependentDbs = doc.dependentDbs || {};
|
||
if (doc.dependentDbs[dependentDb]) {
|
||
return false; // no update required
|
||
}
|
||
doc.dependentDbs[dependentDb] = true;
|
||
return doc;
|
||
}
|
||
upsert(this, '_local/_pouch_dependentDbs', diffFun).then(function () {
|
||
callback(null, {db: depDB});
|
||
}).catch(callback);
|
||
}).bind(this);
|
||
|
||
this.destroy = adapterFun('destroy', function (opts, callback) {
|
||
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
|
||
var usePrefix = 'use_prefix' in this ? this.use_prefix : true;
|
||
|
||
const destroyDb = () => {
|
||
// call destroy method of the particular adaptor
|
||
this._destroy(opts, (err, resp) => {
|
||
if (err) {
|
||
return callback(err);
|
||
}
|
||
this._destroyed = true;
|
||
this.emit('destroyed');
|
||
callback(null, resp || { 'ok': true });
|
||
});
|
||
};
|
||
|
||
if (isRemote(this)) {
|
||
// no need to check for dependent DBs if it's a remote DB
|
||
return destroyDb();
|
||
}
|
||
|
||
this.get('_local/_pouch_dependentDbs', (err, localDoc) => {
|
||
if (err) {
|
||
/* istanbul ignore if */
|
||
if (err.status !== 404) {
|
||
return callback(err);
|
||
} else { // no dependencies
|
||
return destroyDb();
|
||
}
|
||
}
|
||
var dependentDbs = localDoc.dependentDbs;
|
||
var PouchDB = this.constructor;
|
||
var deletedMap = Object.keys(dependentDbs).map((name) => {
|
||
// use_prefix is only false in the browser
|
||
/* istanbul ignore next */
|
||
var trueName = usePrefix ?
|
||
name.replace(new RegExp('^' + PouchDB.prefix), '') : name;
|
||
return new PouchDB(trueName, this.__opts).destroy();
|
||
});
|
||
Promise.all(deletedMap).then(destroyDb, callback);
|
||
});
|
||
}).bind(this);
|
||
}
|
||
|
||
_compact(opts, callback) {
|
||
var changesOpts = {
|
||
return_docs: false,
|
||
last_seq: opts.last_seq || 0
|
||
};
|
||
var promises = [];
|
||
|
||
var taskId;
|
||
var compactedDocs = 0;
|
||
|
||
const onChange = (row) => {
|
||
this.activeTasks.update(taskId, {
|
||
completed_items: ++compactedDocs
|
||
});
|
||
promises.push(this.compactDocument(row.id, 0));
|
||
};
|
||
const onError = (err) => {
|
||
this.activeTasks.remove(taskId, err);
|
||
callback(err);
|
||
};
|
||
const onComplete = (resp) => {
|
||
var lastSeq = resp.last_seq;
|
||
Promise.all(promises).then(() => {
|
||
return upsert(this, '_local/compaction', (doc) => {
|
||
if (!doc.last_seq || doc.last_seq < lastSeq) {
|
||
doc.last_seq = lastSeq;
|
||
return doc;
|
||
}
|
||
return false; // somebody else got here first, don't update
|
||
});
|
||
}).then(() => {
|
||
this.activeTasks.remove(taskId);
|
||
callback(null, {ok: true});
|
||
}).catch(onError);
|
||
};
|
||
|
||
this.info().then((info) => {
|
||
taskId = this.activeTasks.add({
|
||
name: 'database_compaction',
|
||
total_items: info.update_seq - changesOpts.last_seq,
|
||
});
|
||
|
||
this.changes(changesOpts)
|
||
.on('change', onChange)
|
||
.on('complete', onComplete)
|
||
.on('error', onError);
|
||
});
|
||
}
|
||
|
||
changes(opts, callback) {
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
|
||
opts = opts || {};
|
||
|
||
// By default set return_docs to false if the caller has opts.live = true,
|
||
// this will prevent us from collecting the set of changes indefinitely
|
||
// resulting in growing memory
|
||
opts.return_docs = ('return_docs' in opts) ? opts.return_docs : !opts.live;
|
||
|
||
return new Changes$1(this, opts, callback);
|
||
}
|
||
|
||
type() {
|
||
return (typeof this._type === 'function') ? this._type() : this.adapter;
|
||
}
|
||
}
|
||
|
||
// The abstract purge implementation expects a doc id and the rev of a leaf node in that doc.
|
||
// It will return errors if the rev doesn’t exist or isn’t a leaf.
|
||
AbstractPouchDB.prototype.purge = adapterFun('_purge', function (docId, rev, callback) {
|
||
if (typeof this._purge === 'undefined') {
|
||
return callback(createError(UNKNOWN_ERROR, 'Purge is not implemented in the ' + this.adapter + ' adapter.'));
|
||
}
|
||
var self = this;
|
||
|
||
self._getRevisionTree(docId, (error, revs) => {
|
||
if (error) {
|
||
return callback(error);
|
||
}
|
||
if (!revs) {
|
||
return callback(createError(MISSING_DOC));
|
||
}
|
||
let path;
|
||
try {
|
||
path = findPathToLeaf(revs, rev);
|
||
} catch (error) {
|
||
return callback(error.message || error);
|
||
}
|
||
self._purge(docId, path, (error, result) => {
|
||
if (error) {
|
||
return callback(error);
|
||
} else {
|
||
appendPurgeSeq(self, docId, rev).then(function () {
|
||
return callback(null, result);
|
||
});
|
||
}
|
||
});
|
||
});
|
||
});
|
||
|
||
class TaskQueue {
|
||
constructor() {
|
||
this.isReady = false;
|
||
this.failed = false;
|
||
this.queue = [];
|
||
}
|
||
|
||
execute() {
|
||
var fun;
|
||
if (this.failed) {
|
||
while ((fun = this.queue.shift())) {
|
||
fun(this.failed);
|
||
}
|
||
} else {
|
||
while ((fun = this.queue.shift())) {
|
||
fun();
|
||
}
|
||
}
|
||
}
|
||
|
||
fail(err) {
|
||
this.failed = err;
|
||
this.execute();
|
||
}
|
||
|
||
ready(db) {
|
||
this.isReady = true;
|
||
this.db = db;
|
||
this.execute();
|
||
}
|
||
|
||
addTask(fun) {
|
||
this.queue.push(fun);
|
||
if (this.failed) {
|
||
this.execute();
|
||
}
|
||
}
|
||
}
|
||
|
||
function parseAdapter(name, opts) {
|
||
var match = name.match(/([a-z-]*):\/\/(.*)/);
|
||
if (match) {
|
||
// the http adapter expects the fully qualified name
|
||
return {
|
||
name: /https?/.test(match[1]) ? match[1] + '://' + match[2] : match[2],
|
||
adapter: match[1]
|
||
};
|
||
}
|
||
|
||
var adapters = PouchDB.adapters;
|
||
var preferredAdapters = PouchDB.preferredAdapters;
|
||
var prefix = PouchDB.prefix;
|
||
var adapterName = opts.adapter;
|
||
|
||
if (!adapterName) { // automatically determine adapter
|
||
for (var i = 0; i < preferredAdapters.length; ++i) {
|
||
adapterName = preferredAdapters[i];
|
||
// check for browsers that have been upgraded from websql-only to websql+idb
|
||
/* istanbul ignore if */
|
||
if (adapterName === 'idb' && 'websql' in adapters &&
|
||
hasLocalStorage() && localStorage['_pouch__websqldb_' + prefix + name]) {
|
||
// log it, because this can be confusing during development
|
||
guardedConsole('log', 'PouchDB is downgrading "' + name + '" to WebSQL to' +
|
||
' avoid data loss, because it was already opened with WebSQL.');
|
||
continue; // keep using websql to avoid user data loss
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
var adapter = adapters[adapterName];
|
||
|
||
// if adapter is invalid, then an error will be thrown later
|
||
var usePrefix = (adapter && 'use_prefix' in adapter) ?
|
||
adapter.use_prefix : true;
|
||
|
||
return {
|
||
name: usePrefix ? (prefix + name) : name,
|
||
adapter: adapterName
|
||
};
|
||
}
|
||
|
||
function inherits(A, B) {
|
||
A.prototype = Object.create(B.prototype, {
|
||
constructor: { value: A }
|
||
});
|
||
}
|
||
|
||
function createClass(parent, init) {
|
||
let klass = function (...args) {
|
||
if (!(this instanceof klass)) {
|
||
return new klass(...args);
|
||
}
|
||
init.apply(this, args);
|
||
};
|
||
inherits(klass, parent);
|
||
return klass;
|
||
}
|
||
|
||
// OK, so here's the deal. Consider this code:
|
||
// var db1 = new PouchDB('foo');
|
||
// var db2 = new PouchDB('foo');
|
||
// db1.destroy();
|
||
// ^ these two both need to emit 'destroyed' events,
|
||
// as well as the PouchDB constructor itself.
|
||
// So we have one db object (whichever one got destroy() called on it)
|
||
// responsible for emitting the initial event, which then gets emitted
|
||
// by the constructor, which then broadcasts it to any other dbs
|
||
// that may have been created with the same name.
|
||
function prepareForDestruction(self) {
|
||
|
||
function onDestroyed(from_constructor) {
|
||
self.removeListener('closed', onClosed);
|
||
if (!from_constructor) {
|
||
self.constructor.emit('destroyed', self.name);
|
||
}
|
||
}
|
||
|
||
function onClosed() {
|
||
self.removeListener('destroyed', onDestroyed);
|
||
self.constructor.emit('unref', self);
|
||
}
|
||
|
||
self.once('destroyed', onDestroyed);
|
||
self.once('closed', onClosed);
|
||
self.constructor.emit('ref', self);
|
||
}
|
||
|
||
class PouchInternal extends AbstractPouchDB {
|
||
constructor(name, opts) {
|
||
super();
|
||
this._setup(name, opts);
|
||
}
|
||
|
||
_setup(name, opts) {
|
||
super._setup();
|
||
opts = opts || {};
|
||
|
||
if (name && typeof name === 'object') {
|
||
opts = name;
|
||
name = opts.name;
|
||
delete opts.name;
|
||
}
|
||
|
||
if (opts.deterministic_revs === undefined) {
|
||
opts.deterministic_revs = true;
|
||
}
|
||
|
||
this.__opts = opts = clone(opts);
|
||
|
||
this.auto_compaction = opts.auto_compaction;
|
||
this.purged_infos_limit = opts.purged_infos_limit || 1000;
|
||
this.prefix = PouchDB.prefix;
|
||
|
||
if (typeof name !== 'string') {
|
||
throw new Error('Missing/invalid DB name');
|
||
}
|
||
|
||
var prefixedName = (opts.prefix || '') + name;
|
||
var backend = parseAdapter(prefixedName, opts);
|
||
|
||
opts.name = backend.name;
|
||
opts.adapter = opts.adapter || backend.adapter;
|
||
|
||
this.name = name;
|
||
this._adapter = opts.adapter;
|
||
PouchDB.emit('debug', ['adapter', 'Picked adapter: ', opts.adapter]);
|
||
|
||
if (!PouchDB.adapters[opts.adapter] ||
|
||
!PouchDB.adapters[opts.adapter].valid()) {
|
||
throw new Error('Invalid Adapter: ' + opts.adapter);
|
||
}
|
||
|
||
if (opts.view_adapter) {
|
||
if (!PouchDB.adapters[opts.view_adapter] ||
|
||
!PouchDB.adapters[opts.view_adapter].valid()) {
|
||
throw new Error('Invalid View Adapter: ' + opts.view_adapter);
|
||
}
|
||
}
|
||
|
||
this.taskqueue = new TaskQueue();
|
||
|
||
this.adapter = opts.adapter;
|
||
|
||
PouchDB.adapters[opts.adapter].call(this, opts, (err) => {
|
||
if (err) {
|
||
return this.taskqueue.fail(err);
|
||
}
|
||
prepareForDestruction(this);
|
||
|
||
this.emit('created', this);
|
||
PouchDB.emit('created', this.name);
|
||
this.taskqueue.ready(this);
|
||
});
|
||
}
|
||
}
|
||
|
||
const PouchDB = createClass(PouchInternal, function (name, opts) {
|
||
PouchInternal.prototype._setup.call(this, name, opts);
|
||
});
|
||
|
||
// AbortController was introduced quite a while after fetch and
|
||
// isnt required for PouchDB to function so polyfill if needed
|
||
var a = (typeof AbortController !== 'undefined')
|
||
? AbortController
|
||
: function () { return {abort: function () {}}; };
|
||
|
||
var f$1 = fetch;
|
||
var h = Headers;
|
||
|
||
class ActiveTasks {
|
||
constructor() {
|
||
this.tasks = {};
|
||
}
|
||
|
||
list() {
|
||
return Object.values(this.tasks);
|
||
}
|
||
|
||
add(task) {
|
||
const id = v4();
|
||
this.tasks[id] = {
|
||
id,
|
||
name: task.name,
|
||
total_items: task.total_items,
|
||
created_at: new Date().toJSON()
|
||
};
|
||
return id;
|
||
}
|
||
|
||
get(id) {
|
||
return this.tasks[id];
|
||
}
|
||
|
||
/* eslint-disable no-unused-vars */
|
||
remove(id, reason) {
|
||
delete this.tasks[id];
|
||
return this.tasks;
|
||
}
|
||
|
||
update(id, updatedTask) {
|
||
const task = this.tasks[id];
|
||
if (typeof task !== 'undefined') {
|
||
const mergedTask = {
|
||
id: task.id,
|
||
name: task.name,
|
||
created_at: task.created_at,
|
||
total_items: updatedTask.total_items || task.total_items,
|
||
completed_items: updatedTask.completed_items || task.completed_items,
|
||
updated_at: new Date().toJSON()
|
||
};
|
||
this.tasks[id] = mergedTask;
|
||
}
|
||
return this.tasks;
|
||
}
|
||
}
|
||
|
||
PouchDB.adapters = {};
|
||
PouchDB.preferredAdapters = [];
|
||
|
||
PouchDB.prefix = '_pouch_';
|
||
|
||
var eventEmitter = new EE();
|
||
|
||
function setUpEventEmitter(Pouch) {
|
||
Object.keys(EE.prototype).forEach(function (key) {
|
||
if (typeof EE.prototype[key] === 'function') {
|
||
Pouch[key] = eventEmitter[key].bind(eventEmitter);
|
||
}
|
||
});
|
||
|
||
// these are created in constructor.js, and allow us to notify each DB with
|
||
// the same name that it was destroyed, via the constructor object
|
||
var destructListeners = Pouch._destructionListeners = new ExportedMap();
|
||
|
||
Pouch.on('ref', function onConstructorRef(db) {
|
||
if (!destructListeners.has(db.name)) {
|
||
destructListeners.set(db.name, []);
|
||
}
|
||
destructListeners.get(db.name).push(db);
|
||
});
|
||
|
||
Pouch.on('unref', function onConstructorUnref(db) {
|
||
if (!destructListeners.has(db.name)) {
|
||
return;
|
||
}
|
||
var dbList = destructListeners.get(db.name);
|
||
var pos = dbList.indexOf(db);
|
||
if (pos < 0) {
|
||
/* istanbul ignore next */
|
||
return;
|
||
}
|
||
dbList.splice(pos, 1);
|
||
if (dbList.length > 1) {
|
||
/* istanbul ignore next */
|
||
destructListeners.set(db.name, dbList);
|
||
} else {
|
||
destructListeners.delete(db.name);
|
||
}
|
||
});
|
||
|
||
Pouch.on('destroyed', function onConstructorDestroyed(name) {
|
||
if (!destructListeners.has(name)) {
|
||
return;
|
||
}
|
||
var dbList = destructListeners.get(name);
|
||
destructListeners.delete(name);
|
||
dbList.forEach(function (db) {
|
||
db.emit('destroyed',true);
|
||
});
|
||
});
|
||
}
|
||
|
||
setUpEventEmitter(PouchDB);
|
||
|
||
PouchDB.adapter = function (id, obj, addToPreferredAdapters) {
|
||
/* istanbul ignore else */
|
||
if (obj.valid()) {
|
||
PouchDB.adapters[id] = obj;
|
||
if (addToPreferredAdapters) {
|
||
PouchDB.preferredAdapters.push(id);
|
||
}
|
||
}
|
||
};
|
||
|
||
PouchDB.plugin = function (obj) {
|
||
if (typeof obj === 'function') { // function style for plugins
|
||
obj(PouchDB);
|
||
} else if (typeof obj !== 'object' || Object.keys(obj).length === 0) {
|
||
throw new Error('Invalid plugin: got "' + obj + '", expected an object or a function');
|
||
} else {
|
||
Object.keys(obj).forEach(function (id) { // object style for plugins
|
||
PouchDB.prototype[id] = obj[id];
|
||
});
|
||
}
|
||
if (this.__defaults) {
|
||
PouchDB.__defaults = $inject_Object_assign({}, this.__defaults);
|
||
}
|
||
return PouchDB;
|
||
};
|
||
|
||
PouchDB.defaults = function (defaultOpts) {
|
||
let PouchWithDefaults = createClass(PouchDB, function (name, opts) {
|
||
opts = opts || {};
|
||
|
||
if (name && typeof name === 'object') {
|
||
opts = name;
|
||
name = opts.name;
|
||
delete opts.name;
|
||
}
|
||
|
||
opts = $inject_Object_assign({}, PouchWithDefaults.__defaults, opts);
|
||
PouchDB.call(this, name, opts);
|
||
});
|
||
|
||
PouchWithDefaults.preferredAdapters = PouchDB.preferredAdapters.slice();
|
||
Object.keys(PouchDB).forEach(function (key) {
|
||
if (!(key in PouchWithDefaults)) {
|
||
PouchWithDefaults[key] = PouchDB[key];
|
||
}
|
||
});
|
||
|
||
// make default options transitive
|
||
// https://github.com/pouchdb/pouchdb/issues/5922
|
||
PouchWithDefaults.__defaults = $inject_Object_assign({}, this.__defaults, defaultOpts);
|
||
|
||
return PouchWithDefaults;
|
||
};
|
||
|
||
PouchDB.fetch = function (url, opts) {
|
||
return f$1(url, opts);
|
||
};
|
||
|
||
PouchDB.prototype.activeTasks = PouchDB.activeTasks = new ActiveTasks();
|
||
|
||
// managed automatically by set-version.js
|
||
var version = "8.0.1";
|
||
|
||
// this would just be "return doc[field]", but fields
|
||
// can be "deep" due to dot notation
|
||
function getFieldFromDoc(doc, parsedField) {
|
||
var value = doc;
|
||
for (var i = 0, len = parsedField.length; i < len; i++) {
|
||
var key = parsedField[i];
|
||
value = value[key];
|
||
if (!value) {
|
||
break;
|
||
}
|
||
}
|
||
return value;
|
||
}
|
||
|
||
function compare$1(left, right) {
|
||
return left < right ? -1 : left > right ? 1 : 0;
|
||
}
|
||
|
||
// Converts a string in dot notation to an array of its components, with backslash escaping
|
||
function parseField(fieldName) {
|
||
// fields may be deep (e.g. "foo.bar.baz"), so parse
|
||
var fields = [];
|
||
var current = '';
|
||
for (var i = 0, len = fieldName.length; i < len; i++) {
|
||
var ch = fieldName[i];
|
||
if (i > 0 && fieldName[i - 1] === '\\' && (ch === '$' || ch === '.')) {
|
||
// escaped delimiter
|
||
current = current.substring(0, current.length - 1) + ch;
|
||
} else if (ch === '.') {
|
||
// When `.` is not escaped (above), it is a field delimiter
|
||
fields.push(current);
|
||
current = '';
|
||
} else { // normal character
|
||
current += ch;
|
||
}
|
||
}
|
||
fields.push(current);
|
||
return fields;
|
||
}
|
||
|
||
var combinationFields = ['$or', '$nor', '$not'];
|
||
function isCombinationalField(field) {
|
||
return combinationFields.indexOf(field) > -1;
|
||
}
|
||
|
||
function getKey(obj) {
|
||
return Object.keys(obj)[0];
|
||
}
|
||
|
||
function getValue(obj) {
|
||
return obj[getKey(obj)];
|
||
}
|
||
|
||
|
||
// flatten an array of selectors joined by an $and operator
|
||
function mergeAndedSelectors(selectors) {
|
||
|
||
// sort to ensure that e.g. if the user specified
|
||
// $and: [{$gt: 'a'}, {$gt: 'b'}], then it's collapsed into
|
||
// just {$gt: 'b'}
|
||
var res = {};
|
||
var first = {$or: true, $nor: true};
|
||
|
||
selectors.forEach(function (selector) {
|
||
Object.keys(selector).forEach(function (field) {
|
||
var matcher = selector[field];
|
||
if (typeof matcher !== 'object') {
|
||
matcher = {$eq: matcher};
|
||
}
|
||
|
||
if (isCombinationalField(field)) {
|
||
// or, nor
|
||
if (matcher instanceof Array) {
|
||
if (first[field]) {
|
||
first[field] = false;
|
||
res[field] = matcher;
|
||
return;
|
||
}
|
||
|
||
var entries = [];
|
||
res[field].forEach(function (existing) {
|
||
Object.keys(matcher).forEach(function (key) {
|
||
var m = matcher[key];
|
||
var longest = Math.max(Object.keys(existing).length, Object.keys(m).length);
|
||
var merged = mergeAndedSelectors([existing, m]);
|
||
if (Object.keys(merged).length <= longest) {
|
||
// we have a situation like: (a :{$eq :1} || ...) && (a {$eq: 2} || ...)
|
||
// merging would produce a $eq 2 when actually we shouldn't ever match against these merged conditions
|
||
// merged should always contain more values to be valid
|
||
return;
|
||
}
|
||
entries.push(merged);
|
||
});
|
||
});
|
||
res[field] = entries;
|
||
} else {
|
||
// not
|
||
res[field] = mergeAndedSelectors([matcher]);
|
||
}
|
||
} else {
|
||
var fieldMatchers = res[field] = res[field] || {};
|
||
Object.keys(matcher).forEach(function (operator) {
|
||
var value = matcher[operator];
|
||
|
||
if (operator === '$gt' || operator === '$gte') {
|
||
return mergeGtGte(operator, value, fieldMatchers);
|
||
} else if (operator === '$lt' || operator === '$lte') {
|
||
return mergeLtLte(operator, value, fieldMatchers);
|
||
} else if (operator === '$ne') {
|
||
return mergeNe(value, fieldMatchers);
|
||
} else if (operator === '$eq') {
|
||
return mergeEq(value, fieldMatchers);
|
||
} else if (operator === "$regex") {
|
||
return mergeRegex(value, fieldMatchers);
|
||
}
|
||
fieldMatchers[operator] = value;
|
||
});
|
||
}
|
||
});
|
||
});
|
||
|
||
return res;
|
||
}
|
||
|
||
|
||
|
||
// collapse logically equivalent gt/gte values
|
||
function mergeGtGte(operator, value, fieldMatchers) {
|
||
if (typeof fieldMatchers.$eq !== 'undefined') {
|
||
return; // do nothing
|
||
}
|
||
if (typeof fieldMatchers.$gte !== 'undefined') {
|
||
if (operator === '$gte') {
|
||
if (value > fieldMatchers.$gte) { // more specificity
|
||
fieldMatchers.$gte = value;
|
||
}
|
||
} else { // operator === '$gt'
|
||
if (value >= fieldMatchers.$gte) { // more specificity
|
||
delete fieldMatchers.$gte;
|
||
fieldMatchers.$gt = value;
|
||
}
|
||
}
|
||
} else if (typeof fieldMatchers.$gt !== 'undefined') {
|
||
if (operator === '$gte') {
|
||
if (value > fieldMatchers.$gt) { // more specificity
|
||
delete fieldMatchers.$gt;
|
||
fieldMatchers.$gte = value;
|
||
}
|
||
} else { // operator === '$gt'
|
||
if (value > fieldMatchers.$gt) { // more specificity
|
||
fieldMatchers.$gt = value;
|
||
}
|
||
}
|
||
} else {
|
||
fieldMatchers[operator] = value;
|
||
}
|
||
}
|
||
|
||
// collapse logically equivalent lt/lte values
|
||
function mergeLtLte(operator, value, fieldMatchers) {
|
||
if (typeof fieldMatchers.$eq !== 'undefined') {
|
||
return; // do nothing
|
||
}
|
||
if (typeof fieldMatchers.$lte !== 'undefined') {
|
||
if (operator === '$lte') {
|
||
if (value < fieldMatchers.$lte) { // more specificity
|
||
fieldMatchers.$lte = value;
|
||
}
|
||
} else { // operator === '$gt'
|
||
if (value <= fieldMatchers.$lte) { // more specificity
|
||
delete fieldMatchers.$lte;
|
||
fieldMatchers.$lt = value;
|
||
}
|
||
}
|
||
} else if (typeof fieldMatchers.$lt !== 'undefined') {
|
||
if (operator === '$lte') {
|
||
if (value < fieldMatchers.$lt) { // more specificity
|
||
delete fieldMatchers.$lt;
|
||
fieldMatchers.$lte = value;
|
||
}
|
||
} else { // operator === '$gt'
|
||
if (value < fieldMatchers.$lt) { // more specificity
|
||
fieldMatchers.$lt = value;
|
||
}
|
||
}
|
||
} else {
|
||
fieldMatchers[operator] = value;
|
||
}
|
||
}
|
||
|
||
// combine $ne values into one array
|
||
function mergeNe(value, fieldMatchers) {
|
||
if ('$ne' in fieldMatchers) {
|
||
// there are many things this could "not" be
|
||
fieldMatchers.$ne.push(value);
|
||
} else { // doesn't exist yet
|
||
fieldMatchers.$ne = [value];
|
||
}
|
||
}
|
||
|
||
// add $eq into the mix
|
||
function mergeEq(value, fieldMatchers) {
|
||
// these all have less specificity than the $eq
|
||
// TODO: check for user errors here
|
||
delete fieldMatchers.$gt;
|
||
delete fieldMatchers.$gte;
|
||
delete fieldMatchers.$lt;
|
||
delete fieldMatchers.$lte;
|
||
delete fieldMatchers.$ne;
|
||
fieldMatchers.$eq = value;
|
||
}
|
||
|
||
// combine $regex values into one array
|
||
function mergeRegex(value, fieldMatchers) {
|
||
if ('$regex' in fieldMatchers) {
|
||
// a value could match multiple regexes
|
||
fieldMatchers.$regex.push(value);
|
||
} else { // doesn't exist yet
|
||
fieldMatchers.$regex = [value];
|
||
}
|
||
}
|
||
|
||
//#7458: execute function mergeAndedSelectors on nested $and
|
||
function mergeAndedSelectorsNested(obj) {
|
||
for (var prop in obj) {
|
||
if (Array.isArray(obj)) {
|
||
for (var i in obj) {
|
||
if (obj[i]['$and']) {
|
||
obj[i] = mergeAndedSelectors(obj[i]['$and']);
|
||
}
|
||
}
|
||
}
|
||
var value = obj[prop];
|
||
if (typeof value === 'object') {
|
||
mergeAndedSelectorsNested(value); // <- recursive call
|
||
}
|
||
}
|
||
return obj;
|
||
}
|
||
|
||
//#7458: determine id $and is present in selector (at any level)
|
||
function isAndInSelector(obj, isAnd) {
|
||
for (var prop in obj) {
|
||
if (prop === '$and') {
|
||
isAnd = true;
|
||
}
|
||
var value = obj[prop];
|
||
if (typeof value === 'object') {
|
||
isAnd = isAndInSelector(value, isAnd); // <- recursive call
|
||
}
|
||
}
|
||
return isAnd;
|
||
}
|
||
|
||
//
|
||
// normalize the selector
|
||
//
|
||
function massageSelector(input) {
|
||
var result = clone(input);
|
||
|
||
//#7458: if $and is present in selector (at any level) merge nested $and
|
||
if (isAndInSelector(result, false)) {
|
||
result = mergeAndedSelectorsNested(result);
|
||
if ('$and' in result) {
|
||
result = mergeAndedSelectors(result['$and']);
|
||
}
|
||
}
|
||
|
||
['$or', '$nor'].forEach(function (orOrNor) {
|
||
if (orOrNor in result) {
|
||
// message each individual selector
|
||
// e.g. {foo: 'bar'} becomes {foo: {$eq: 'bar'}}
|
||
result[orOrNor].forEach(function (subSelector) {
|
||
var fields = Object.keys(subSelector);
|
||
for (var i = 0; i < fields.length; i++) {
|
||
var field = fields[i];
|
||
var matcher = subSelector[field];
|
||
if (typeof matcher !== 'object' || matcher === null) {
|
||
subSelector[field] = {$eq: matcher};
|
||
}
|
||
}
|
||
});
|
||
}
|
||
});
|
||
|
||
if ('$not' in result) {
|
||
//This feels a little like forcing, but it will work for now,
|
||
//I would like to come back to this and make the merging of selectors a little more generic
|
||
result['$not'] = mergeAndedSelectors([result['$not']]);
|
||
}
|
||
|
||
var fields = Object.keys(result);
|
||
|
||
for (var i = 0; i < fields.length; i++) {
|
||
var field = fields[i];
|
||
var matcher = result[field];
|
||
|
||
if (typeof matcher !== 'object' || matcher === null) {
|
||
matcher = {$eq: matcher};
|
||
}
|
||
result[field] = matcher;
|
||
}
|
||
|
||
normalizeArrayOperators(result);
|
||
|
||
return result;
|
||
}
|
||
|
||
//
|
||
// The $ne and $regex values must be placed in an array because these operators can be used multiple times on the same field.
|
||
// When $and is used, mergeAndedSelectors takes care of putting some of them into arrays, otherwise it's done here.
|
||
//
|
||
function normalizeArrayOperators(selector) {
|
||
Object.keys(selector).forEach(function (field) {
|
||
var matcher = selector[field];
|
||
|
||
if (Array.isArray(matcher)) {
|
||
matcher.forEach(function (matcherItem) {
|
||
if (matcherItem && typeof matcherItem === 'object') {
|
||
normalizeArrayOperators(matcherItem);
|
||
}
|
||
});
|
||
} else if (field === '$ne') {
|
||
selector.$ne = [matcher];
|
||
} else if (field === '$regex') {
|
||
selector.$regex = [matcher];
|
||
} else if (matcher && typeof matcher === 'object') {
|
||
normalizeArrayOperators(matcher);
|
||
}
|
||
});
|
||
}
|
||
|
||
function pad(str, padWith, upToLength) {
|
||
var padding = '';
|
||
var targetLength = upToLength - str.length;
|
||
/* istanbul ignore next */
|
||
while (padding.length < targetLength) {
|
||
padding += padWith;
|
||
}
|
||
return padding;
|
||
}
|
||
|
||
function padLeft(str, padWith, upToLength) {
|
||
var padding = pad(str, padWith, upToLength);
|
||
return padding + str;
|
||
}
|
||
|
||
var MIN_MAGNITUDE = -324; // verified by -Number.MIN_VALUE
|
||
var MAGNITUDE_DIGITS = 3; // ditto
|
||
var SEP = ''; // set to '_' for easier debugging
|
||
|
||
function collate(a, b) {
|
||
|
||
if (a === b) {
|
||
return 0;
|
||
}
|
||
|
||
a = normalizeKey(a);
|
||
b = normalizeKey(b);
|
||
|
||
var ai = collationIndex(a);
|
||
var bi = collationIndex(b);
|
||
if ((ai - bi) !== 0) {
|
||
return ai - bi;
|
||
}
|
||
switch (typeof a) {
|
||
case 'number':
|
||
return a - b;
|
||
case 'boolean':
|
||
return a < b ? -1 : 1;
|
||
case 'string':
|
||
return stringCollate(a, b);
|
||
}
|
||
return Array.isArray(a) ? arrayCollate(a, b) : objectCollate(a, b);
|
||
}
|
||
|
||
// couch considers null/NaN/Infinity/-Infinity === undefined,
|
||
// for the purposes of mapreduce indexes. also, dates get stringified.
|
||
function normalizeKey(key) {
|
||
switch (typeof key) {
|
||
case 'undefined':
|
||
return null;
|
||
case 'number':
|
||
if (key === Infinity || key === -Infinity || isNaN(key)) {
|
||
return null;
|
||
}
|
||
return key;
|
||
case 'object':
|
||
var origKey = key;
|
||
if (Array.isArray(key)) {
|
||
var len = key.length;
|
||
key = new Array(len);
|
||
for (var i = 0; i < len; i++) {
|
||
key[i] = normalizeKey(origKey[i]);
|
||
}
|
||
/* istanbul ignore next */
|
||
} else if (key instanceof Date) {
|
||
return key.toJSON();
|
||
} else if (key !== null) { // generic object
|
||
key = {};
|
||
for (var k in origKey) {
|
||
if (Object.prototype.hasOwnProperty.call(origKey, k)) {
|
||
var val = origKey[k];
|
||
if (typeof val !== 'undefined') {
|
||
key[k] = normalizeKey(val);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
return key;
|
||
}
|
||
|
||
function indexify(key) {
|
||
if (key !== null) {
|
||
switch (typeof key) {
|
||
case 'boolean':
|
||
return key ? 1 : 0;
|
||
case 'number':
|
||
return numToIndexableString(key);
|
||
case 'string':
|
||
// We've to be sure that key does not contain \u0000
|
||
// Do order-preserving replacements:
|
||
// 0 -> 1, 1
|
||
// 1 -> 1, 2
|
||
// 2 -> 2, 2
|
||
/* eslint-disable no-control-regex */
|
||
return key
|
||
.replace(/\u0002/g, '\u0002\u0002')
|
||
.replace(/\u0001/g, '\u0001\u0002')
|
||
.replace(/\u0000/g, '\u0001\u0001');
|
||
/* eslint-enable no-control-regex */
|
||
case 'object':
|
||
var isArray = Array.isArray(key);
|
||
var arr = isArray ? key : Object.keys(key);
|
||
var i = -1;
|
||
var len = arr.length;
|
||
var result = '';
|
||
if (isArray) {
|
||
while (++i < len) {
|
||
result += toIndexableString(arr[i]);
|
||
}
|
||
} else {
|
||
while (++i < len) {
|
||
var objKey = arr[i];
|
||
result += toIndexableString(objKey) +
|
||
toIndexableString(key[objKey]);
|
||
}
|
||
}
|
||
return result;
|
||
}
|
||
}
|
||
return '';
|
||
}
|
||
|
||
// convert the given key to a string that would be appropriate
|
||
// for lexical sorting, e.g. within a database, where the
|
||
// sorting is the same given by the collate() function.
|
||
function toIndexableString(key) {
|
||
var zero = '\u0000';
|
||
key = normalizeKey(key);
|
||
return collationIndex(key) + SEP + indexify(key) + zero;
|
||
}
|
||
|
||
function parseNumber(str, i) {
|
||
var originalIdx = i;
|
||
var num;
|
||
var zero = str[i] === '1';
|
||
if (zero) {
|
||
num = 0;
|
||
i++;
|
||
} else {
|
||
var neg = str[i] === '0';
|
||
i++;
|
||
var numAsString = '';
|
||
var magAsString = str.substring(i, i + MAGNITUDE_DIGITS);
|
||
var magnitude = parseInt(magAsString, 10) + MIN_MAGNITUDE;
|
||
/* istanbul ignore next */
|
||
if (neg) {
|
||
magnitude = -magnitude;
|
||
}
|
||
i += MAGNITUDE_DIGITS;
|
||
while (true) {
|
||
var ch = str[i];
|
||
if (ch === '\u0000') {
|
||
break;
|
||
} else {
|
||
numAsString += ch;
|
||
}
|
||
i++;
|
||
}
|
||
numAsString = numAsString.split('.');
|
||
if (numAsString.length === 1) {
|
||
num = parseInt(numAsString, 10);
|
||
} else {
|
||
/* istanbul ignore next */
|
||
num = parseFloat(numAsString[0] + '.' + numAsString[1]);
|
||
}
|
||
/* istanbul ignore next */
|
||
if (neg) {
|
||
num = num - 10;
|
||
}
|
||
/* istanbul ignore next */
|
||
if (magnitude !== 0) {
|
||
// parseFloat is more reliable than pow due to rounding errors
|
||
// e.g. Number.MAX_VALUE would return Infinity if we did
|
||
// num * Math.pow(10, magnitude);
|
||
num = parseFloat(num + 'e' + magnitude);
|
||
}
|
||
}
|
||
return {num: num, length : i - originalIdx};
|
||
}
|
||
|
||
// move up the stack while parsing
|
||
// this function moved outside of parseIndexableString for performance
|
||
function pop(stack, metaStack) {
|
||
var obj = stack.pop();
|
||
|
||
if (metaStack.length) {
|
||
var lastMetaElement = metaStack[metaStack.length - 1];
|
||
if (obj === lastMetaElement.element) {
|
||
// popping a meta-element, e.g. an object whose value is another object
|
||
metaStack.pop();
|
||
lastMetaElement = metaStack[metaStack.length - 1];
|
||
}
|
||
var element = lastMetaElement.element;
|
||
var lastElementIndex = lastMetaElement.index;
|
||
if (Array.isArray(element)) {
|
||
element.push(obj);
|
||
} else if (lastElementIndex === stack.length - 2) { // obj with key+value
|
||
var key = stack.pop();
|
||
element[key] = obj;
|
||
} else {
|
||
stack.push(obj); // obj with key only
|
||
}
|
||
}
|
||
}
|
||
|
||
function parseIndexableString(str) {
|
||
var stack = [];
|
||
var metaStack = []; // stack for arrays and objects
|
||
var i = 0;
|
||
|
||
/*eslint no-constant-condition: ["error", { "checkLoops": false }]*/
|
||
while (true) {
|
||
var collationIndex = str[i++];
|
||
if (collationIndex === '\u0000') {
|
||
if (stack.length === 1) {
|
||
return stack.pop();
|
||
} else {
|
||
pop(stack, metaStack);
|
||
continue;
|
||
}
|
||
}
|
||
switch (collationIndex) {
|
||
case '1':
|
||
stack.push(null);
|
||
break;
|
||
case '2':
|
||
stack.push(str[i] === '1');
|
||
i++;
|
||
break;
|
||
case '3':
|
||
var parsedNum = parseNumber(str, i);
|
||
stack.push(parsedNum.num);
|
||
i += parsedNum.length;
|
||
break;
|
||
case '4':
|
||
var parsedStr = '';
|
||
/*eslint no-constant-condition: ["error", { "checkLoops": false }]*/
|
||
while (true) {
|
||
var ch = str[i];
|
||
if (ch === '\u0000') {
|
||
break;
|
||
}
|
||
parsedStr += ch;
|
||
i++;
|
||
}
|
||
// perform the reverse of the order-preserving replacement
|
||
// algorithm (see above)
|
||
/* eslint-disable no-control-regex */
|
||
parsedStr = parsedStr.replace(/\u0001\u0001/g, '\u0000')
|
||
.replace(/\u0001\u0002/g, '\u0001')
|
||
.replace(/\u0002\u0002/g, '\u0002');
|
||
/* eslint-enable no-control-regex */
|
||
stack.push(parsedStr);
|
||
break;
|
||
case '5':
|
||
var arrayElement = { element: [], index: stack.length };
|
||
stack.push(arrayElement.element);
|
||
metaStack.push(arrayElement);
|
||
break;
|
||
case '6':
|
||
var objElement = { element: {}, index: stack.length };
|
||
stack.push(objElement.element);
|
||
metaStack.push(objElement);
|
||
break;
|
||
/* istanbul ignore next */
|
||
default:
|
||
throw new Error(
|
||
'bad collationIndex or unexpectedly reached end of input: ' +
|
||
collationIndex);
|
||
}
|
||
}
|
||
}
|
||
|
||
function arrayCollate(a, b) {
|
||
var len = Math.min(a.length, b.length);
|
||
for (var i = 0; i < len; i++) {
|
||
var sort = collate(a[i], b[i]);
|
||
if (sort !== 0) {
|
||
return sort;
|
||
}
|
||
}
|
||
return (a.length === b.length) ? 0 :
|
||
(a.length > b.length) ? 1 : -1;
|
||
}
|
||
function stringCollate(a, b) {
|
||
// See: https://github.com/daleharvey/pouchdb/issues/40
|
||
// This is incompatible with the CouchDB implementation, but its the
|
||
// best we can do for now
|
||
return (a === b) ? 0 : ((a > b) ? 1 : -1);
|
||
}
|
||
function objectCollate(a, b) {
|
||
var ak = Object.keys(a), bk = Object.keys(b);
|
||
var len = Math.min(ak.length, bk.length);
|
||
for (var i = 0; i < len; i++) {
|
||
// First sort the keys
|
||
var sort = collate(ak[i], bk[i]);
|
||
if (sort !== 0) {
|
||
return sort;
|
||
}
|
||
// if the keys are equal sort the values
|
||
sort = collate(a[ak[i]], b[bk[i]]);
|
||
if (sort !== 0) {
|
||
return sort;
|
||
}
|
||
|
||
}
|
||
return (ak.length === bk.length) ? 0 :
|
||
(ak.length > bk.length) ? 1 : -1;
|
||
}
|
||
// The collation is defined by erlangs ordered terms
|
||
// the atoms null, true, false come first, then numbers, strings,
|
||
// arrays, then objects
|
||
// null/undefined/NaN/Infinity/-Infinity are all considered null
|
||
function collationIndex(x) {
|
||
var id = ['boolean', 'number', 'string', 'object'];
|
||
var idx = id.indexOf(typeof x);
|
||
//false if -1 otherwise true, but fast!!!!1
|
||
if (~idx) {
|
||
if (x === null) {
|
||
return 1;
|
||
}
|
||
if (Array.isArray(x)) {
|
||
return 5;
|
||
}
|
||
return idx < 3 ? (idx + 2) : (idx + 3);
|
||
}
|
||
/* istanbul ignore next */
|
||
if (Array.isArray(x)) {
|
||
return 5;
|
||
}
|
||
}
|
||
|
||
// conversion:
|
||
// x yyy zz...zz
|
||
// x = 0 for negative, 1 for 0, 2 for positive
|
||
// y = exponent (for negative numbers negated) moved so that it's >= 0
|
||
// z = mantisse
|
||
function numToIndexableString(num) {
|
||
|
||
if (num === 0) {
|
||
return '1';
|
||
}
|
||
|
||
// convert number to exponential format for easier and
|
||
// more succinct string sorting
|
||
var expFormat = num.toExponential().split(/e\+?/);
|
||
var magnitude = parseInt(expFormat[1], 10);
|
||
|
||
var neg = num < 0;
|
||
|
||
var result = neg ? '0' : '2';
|
||
|
||
// first sort by magnitude
|
||
// it's easier if all magnitudes are positive
|
||
var magForComparison = ((neg ? -magnitude : magnitude) - MIN_MAGNITUDE);
|
||
var magString = padLeft((magForComparison).toString(), '0', MAGNITUDE_DIGITS);
|
||
|
||
result += SEP + magString;
|
||
|
||
// then sort by the factor
|
||
var factor = Math.abs(parseFloat(expFormat[0])); // [1..10)
|
||
/* istanbul ignore next */
|
||
if (neg) { // for negative reverse ordering
|
||
factor = 10 - factor;
|
||
}
|
||
|
||
var factorStr = factor.toFixed(20);
|
||
|
||
// strip zeros from the end
|
||
factorStr = factorStr.replace(/\.?0+$/, '');
|
||
|
||
result += SEP + factorStr;
|
||
|
||
return result;
|
||
}
|
||
|
||
// create a comparator based on the sort object
|
||
function createFieldSorter(sort) {
|
||
|
||
function getFieldValuesAsArray(doc) {
|
||
return sort.map(function (sorting) {
|
||
var fieldName = getKey(sorting);
|
||
var parsedField = parseField(fieldName);
|
||
var docFieldValue = getFieldFromDoc(doc, parsedField);
|
||
return docFieldValue;
|
||
});
|
||
}
|
||
|
||
return function (aRow, bRow) {
|
||
var aFieldValues = getFieldValuesAsArray(aRow.doc);
|
||
var bFieldValues = getFieldValuesAsArray(bRow.doc);
|
||
var collation = collate(aFieldValues, bFieldValues);
|
||
if (collation !== 0) {
|
||
return collation;
|
||
}
|
||
// this is what mango seems to do
|
||
return compare$1(aRow.doc._id, bRow.doc._id);
|
||
};
|
||
}
|
||
|
||
function filterInMemoryFields(rows, requestDef, inMemoryFields) {
|
||
rows = rows.filter(function (row) {
|
||
return rowFilter(row.doc, requestDef.selector, inMemoryFields);
|
||
});
|
||
|
||
if (requestDef.sort) {
|
||
// in-memory sort
|
||
var fieldSorter = createFieldSorter(requestDef.sort);
|
||
rows = rows.sort(fieldSorter);
|
||
if (typeof requestDef.sort[0] !== 'string' &&
|
||
getValue(requestDef.sort[0]) === 'desc') {
|
||
rows = rows.reverse();
|
||
}
|
||
}
|
||
|
||
if ('limit' in requestDef || 'skip' in requestDef) {
|
||
// have to do the limit in-memory
|
||
var skip = requestDef.skip || 0;
|
||
var limit = ('limit' in requestDef ? requestDef.limit : rows.length) + skip;
|
||
rows = rows.slice(skip, limit);
|
||
}
|
||
return rows;
|
||
}
|
||
|
||
function rowFilter(doc, selector, inMemoryFields) {
|
||
return inMemoryFields.every(function (field) {
|
||
var matcher = selector[field];
|
||
var parsedField = parseField(field);
|
||
var docFieldValue = getFieldFromDoc(doc, parsedField);
|
||
if (isCombinationalField(field)) {
|
||
return matchCominationalSelector(field, matcher, doc);
|
||
}
|
||
|
||
return matchSelector(matcher, doc, parsedField, docFieldValue);
|
||
});
|
||
}
|
||
|
||
function matchSelector(matcher, doc, parsedField, docFieldValue) {
|
||
if (!matcher) {
|
||
// no filtering necessary; this field is just needed for sorting
|
||
return true;
|
||
}
|
||
|
||
// is matcher an object, if so continue recursion
|
||
if (typeof matcher === 'object') {
|
||
return Object.keys(matcher).every(function (maybeUserOperator) {
|
||
var userValue = matcher[ maybeUserOperator ];
|
||
// explicit operator
|
||
if (maybeUserOperator.indexOf("$") === 0) {
|
||
return match(maybeUserOperator, doc, userValue, parsedField, docFieldValue);
|
||
} else {
|
||
var subParsedField = parseField(maybeUserOperator);
|
||
|
||
if (
|
||
docFieldValue === undefined &&
|
||
typeof userValue !== "object" &&
|
||
subParsedField.length > 0
|
||
) {
|
||
// the field does not exist, return or getFieldFromDoc will throw
|
||
return false;
|
||
}
|
||
|
||
var subDocFieldValue = getFieldFromDoc(docFieldValue, subParsedField);
|
||
|
||
if (typeof userValue === "object") {
|
||
// field value is an object that might contain more operators
|
||
return matchSelector(userValue, doc, parsedField, subDocFieldValue);
|
||
}
|
||
|
||
// implicit operator
|
||
return match("$eq", doc, userValue, subParsedField, subDocFieldValue);
|
||
}
|
||
});
|
||
}
|
||
|
||
// no more depth, No need to recurse further
|
||
return matcher === docFieldValue;
|
||
}
|
||
|
||
function matchCominationalSelector(field, matcher, doc) {
|
||
|
||
if (field === '$or') {
|
||
return matcher.some(function (orMatchers) {
|
||
return rowFilter(doc, orMatchers, Object.keys(orMatchers));
|
||
});
|
||
}
|
||
|
||
if (field === '$not') {
|
||
return !rowFilter(doc, matcher, Object.keys(matcher));
|
||
}
|
||
|
||
//`$nor`
|
||
return !matcher.find(function (orMatchers) {
|
||
return rowFilter(doc, orMatchers, Object.keys(orMatchers));
|
||
});
|
||
|
||
}
|
||
|
||
function match(userOperator, doc, userValue, parsedField, docFieldValue) {
|
||
if (!matchers[userOperator]) {
|
||
/* istanbul ignore next */
|
||
throw new Error('unknown operator "' + userOperator +
|
||
'" - should be one of $eq, $lte, $lt, $gt, $gte, $exists, $ne, $in, ' +
|
||
'$nin, $size, $mod, $regex, $elemMatch, $type, $allMatch or $all');
|
||
}
|
||
return matchers[userOperator](doc, userValue, parsedField, docFieldValue);
|
||
}
|
||
|
||
function fieldExists(docFieldValue) {
|
||
return typeof docFieldValue !== 'undefined' && docFieldValue !== null;
|
||
}
|
||
|
||
function fieldIsNotUndefined(docFieldValue) {
|
||
return typeof docFieldValue !== 'undefined';
|
||
}
|
||
|
||
function modField(docFieldValue, userValue) {
|
||
if (typeof docFieldValue !== "number" ||
|
||
parseInt(docFieldValue, 10) !== docFieldValue) {
|
||
return false;
|
||
}
|
||
|
||
var divisor = userValue[0];
|
||
var mod = userValue[1];
|
||
|
||
return docFieldValue % divisor === mod;
|
||
}
|
||
|
||
function arrayContainsValue(docFieldValue, userValue) {
|
||
return userValue.some(function (val) {
|
||
if (docFieldValue instanceof Array) {
|
||
return docFieldValue.some(function (docFieldValueItem) {
|
||
return collate(val, docFieldValueItem) === 0;
|
||
});
|
||
}
|
||
|
||
return collate(val, docFieldValue) === 0;
|
||
});
|
||
}
|
||
|
||
function arrayContainsAllValues(docFieldValue, userValue) {
|
||
return userValue.every(function (val) {
|
||
return docFieldValue.some(function (docFieldValueItem) {
|
||
return collate(val, docFieldValueItem) === 0;
|
||
});
|
||
});
|
||
}
|
||
|
||
function arraySize(docFieldValue, userValue) {
|
||
return docFieldValue.length === userValue;
|
||
}
|
||
|
||
function regexMatch(docFieldValue, userValue) {
|
||
var re = new RegExp(userValue);
|
||
|
||
return re.test(docFieldValue);
|
||
}
|
||
|
||
function typeMatch(docFieldValue, userValue) {
|
||
|
||
switch (userValue) {
|
||
case 'null':
|
||
return docFieldValue === null;
|
||
case 'boolean':
|
||
return typeof (docFieldValue) === 'boolean';
|
||
case 'number':
|
||
return typeof (docFieldValue) === 'number';
|
||
case 'string':
|
||
return typeof (docFieldValue) === 'string';
|
||
case 'array':
|
||
return docFieldValue instanceof Array;
|
||
case 'object':
|
||
return ({}).toString.call(docFieldValue) === '[object Object]';
|
||
}
|
||
}
|
||
|
||
var matchers = {
|
||
|
||
'$elemMatch': function (doc, userValue, parsedField, docFieldValue) {
|
||
if (!Array.isArray(docFieldValue)) {
|
||
return false;
|
||
}
|
||
|
||
if (docFieldValue.length === 0) {
|
||
return false;
|
||
}
|
||
|
||
if (typeof docFieldValue[0] === 'object' && docFieldValue[0] !== null) {
|
||
return docFieldValue.some(function (val) {
|
||
return rowFilter(val, userValue, Object.keys(userValue));
|
||
});
|
||
}
|
||
|
||
return docFieldValue.some(function (val) {
|
||
return matchSelector(userValue, doc, parsedField, val);
|
||
});
|
||
},
|
||
|
||
'$allMatch': function (doc, userValue, parsedField, docFieldValue) {
|
||
if (!Array.isArray(docFieldValue)) {
|
||
return false;
|
||
}
|
||
|
||
/* istanbul ignore next */
|
||
if (docFieldValue.length === 0) {
|
||
return false;
|
||
}
|
||
|
||
if (typeof docFieldValue[0] === 'object' && docFieldValue[0] !== null) {
|
||
return docFieldValue.every(function (val) {
|
||
return rowFilter(val, userValue, Object.keys(userValue));
|
||
});
|
||
}
|
||
|
||
return docFieldValue.every(function (val) {
|
||
return matchSelector(userValue, doc, parsedField, val);
|
||
});
|
||
},
|
||
|
||
'$eq': function (doc, userValue, parsedField, docFieldValue) {
|
||
return fieldIsNotUndefined(docFieldValue) && collate(docFieldValue, userValue) === 0;
|
||
},
|
||
|
||
'$gte': function (doc, userValue, parsedField, docFieldValue) {
|
||
return fieldIsNotUndefined(docFieldValue) && collate(docFieldValue, userValue) >= 0;
|
||
},
|
||
|
||
'$gt': function (doc, userValue, parsedField, docFieldValue) {
|
||
return fieldIsNotUndefined(docFieldValue) && collate(docFieldValue, userValue) > 0;
|
||
},
|
||
|
||
'$lte': function (doc, userValue, parsedField, docFieldValue) {
|
||
return fieldIsNotUndefined(docFieldValue) && collate(docFieldValue, userValue) <= 0;
|
||
},
|
||
|
||
'$lt': function (doc, userValue, parsedField, docFieldValue) {
|
||
return fieldIsNotUndefined(docFieldValue) && collate(docFieldValue, userValue) < 0;
|
||
},
|
||
|
||
'$exists': function (doc, userValue, parsedField, docFieldValue) {
|
||
//a field that is null is still considered to exist
|
||
if (userValue) {
|
||
return fieldIsNotUndefined(docFieldValue);
|
||
}
|
||
|
||
return !fieldIsNotUndefined(docFieldValue);
|
||
},
|
||
|
||
'$mod': function (doc, userValue, parsedField, docFieldValue) {
|
||
return fieldExists(docFieldValue) && modField(docFieldValue, userValue);
|
||
},
|
||
|
||
'$ne': function (doc, userValue, parsedField, docFieldValue) {
|
||
return userValue.every(function (neValue) {
|
||
return collate(docFieldValue, neValue) !== 0;
|
||
});
|
||
},
|
||
'$in': function (doc, userValue, parsedField, docFieldValue) {
|
||
return fieldExists(docFieldValue) && arrayContainsValue(docFieldValue, userValue);
|
||
},
|
||
|
||
'$nin': function (doc, userValue, parsedField, docFieldValue) {
|
||
return fieldExists(docFieldValue) && !arrayContainsValue(docFieldValue, userValue);
|
||
},
|
||
|
||
'$size': function (doc, userValue, parsedField, docFieldValue) {
|
||
return fieldExists(docFieldValue) &&
|
||
Array.isArray(docFieldValue) &&
|
||
arraySize(docFieldValue, userValue);
|
||
},
|
||
|
||
'$all': function (doc, userValue, parsedField, docFieldValue) {
|
||
return Array.isArray(docFieldValue) && arrayContainsAllValues(docFieldValue, userValue);
|
||
},
|
||
|
||
'$regex': function (doc, userValue, parsedField, docFieldValue) {
|
||
return fieldExists(docFieldValue) &&
|
||
typeof docFieldValue == "string" &&
|
||
userValue.every(function (regexValue) {
|
||
return regexMatch(docFieldValue, regexValue);
|
||
});
|
||
},
|
||
|
||
'$type': function (doc, userValue, parsedField, docFieldValue) {
|
||
return typeMatch(docFieldValue, userValue);
|
||
}
|
||
};
|
||
|
||
// return true if the given doc matches the supplied selector
|
||
function matchesSelector(doc, selector) {
|
||
/* istanbul ignore if */
|
||
if (typeof selector !== 'object') {
|
||
// match the CouchDB error message
|
||
throw new Error('Selector error: expected a JSON object');
|
||
}
|
||
|
||
selector = massageSelector(selector);
|
||
var row = {
|
||
'doc': doc
|
||
};
|
||
|
||
var rowsMatched = filterInMemoryFields([row], { 'selector': selector }, Object.keys(selector));
|
||
return rowsMatched && rowsMatched.length === 1;
|
||
}
|
||
|
||
function evalFilter(input) {
|
||
return scopeEval('"use strict";\nreturn ' + input + ';', {});
|
||
}
|
||
|
||
function evalView(input) {
|
||
var code = [
|
||
'return function(doc) {',
|
||
' "use strict";',
|
||
' var emitted = false;',
|
||
' var emit = function (a, b) {',
|
||
' emitted = true;',
|
||
' };',
|
||
' var view = ' + input + ';',
|
||
' view(doc);',
|
||
' if (emitted) {',
|
||
' return true;',
|
||
' }',
|
||
'};'
|
||
].join('\n');
|
||
|
||
return scopeEval(code, {});
|
||
}
|
||
|
||
function validate(opts, callback) {
|
||
if (opts.selector) {
|
||
if (opts.filter && opts.filter !== '_selector') {
|
||
var filterName = typeof opts.filter === 'string' ?
|
||
opts.filter : 'function';
|
||
return callback(new Error('selector invalid for filter "' + filterName + '"'));
|
||
}
|
||
}
|
||
callback();
|
||
}
|
||
|
||
function normalize(opts) {
|
||
if (opts.view && !opts.filter) {
|
||
opts.filter = '_view';
|
||
}
|
||
|
||
if (opts.selector && !opts.filter) {
|
||
opts.filter = '_selector';
|
||
}
|
||
|
||
if (opts.filter && typeof opts.filter === 'string') {
|
||
if (opts.filter === '_view') {
|
||
opts.view = normalizeDesignDocFunctionName(opts.view);
|
||
} else {
|
||
opts.filter = normalizeDesignDocFunctionName(opts.filter);
|
||
}
|
||
}
|
||
}
|
||
|
||
function shouldFilter(changesHandler, opts) {
|
||
return opts.filter && typeof opts.filter === 'string' &&
|
||
!opts.doc_ids && !isRemote(changesHandler.db);
|
||
}
|
||
|
||
function filter(changesHandler, opts) {
|
||
var callback = opts.complete;
|
||
if (opts.filter === '_view') {
|
||
if (!opts.view || typeof opts.view !== 'string') {
|
||
var err = createError(BAD_REQUEST,
|
||
'`view` filter parameter not found or invalid.');
|
||
return callback(err);
|
||
}
|
||
// fetch a view from a design doc, make it behave like a filter
|
||
var viewName = parseDesignDocFunctionName(opts.view);
|
||
changesHandler.db.get('_design/' + viewName[0], function (err, ddoc) {
|
||
/* istanbul ignore if */
|
||
if (changesHandler.isCancelled) {
|
||
return callback(null, {status: 'cancelled'});
|
||
}
|
||
/* istanbul ignore next */
|
||
if (err) {
|
||
return callback(generateErrorFromResponse(err));
|
||
}
|
||
var mapFun = ddoc && ddoc.views && ddoc.views[viewName[1]] &&
|
||
ddoc.views[viewName[1]].map;
|
||
if (!mapFun) {
|
||
return callback(createError(MISSING_DOC,
|
||
(ddoc.views ? 'missing json key: ' + viewName[1] :
|
||
'missing json key: views')));
|
||
}
|
||
opts.filter = evalView(mapFun);
|
||
changesHandler.doChanges(opts);
|
||
});
|
||
} else if (opts.selector) {
|
||
opts.filter = function (doc) {
|
||
return matchesSelector(doc, opts.selector);
|
||
};
|
||
changesHandler.doChanges(opts);
|
||
} else {
|
||
// fetch a filter from a design doc
|
||
var filterName = parseDesignDocFunctionName(opts.filter);
|
||
changesHandler.db.get('_design/' + filterName[0], function (err, ddoc) {
|
||
/* istanbul ignore if */
|
||
if (changesHandler.isCancelled) {
|
||
return callback(null, {status: 'cancelled'});
|
||
}
|
||
/* istanbul ignore next */
|
||
if (err) {
|
||
return callback(generateErrorFromResponse(err));
|
||
}
|
||
var filterFun = ddoc && ddoc.filters && ddoc.filters[filterName[1]];
|
||
if (!filterFun) {
|
||
return callback(createError(MISSING_DOC,
|
||
((ddoc && ddoc.filters) ? 'missing json key: ' + filterName[1]
|
||
: 'missing json key: filters')));
|
||
}
|
||
opts.filter = evalFilter(filterFun);
|
||
changesHandler.doChanges(opts);
|
||
});
|
||
}
|
||
}
|
||
|
||
function applyChangesFilterPlugin(PouchDB) {
|
||
PouchDB._changesFilterPlugin = {
|
||
validate: validate,
|
||
normalize: normalize,
|
||
shouldFilter: shouldFilter,
|
||
filter: filter
|
||
};
|
||
}
|
||
|
||
// TODO: remove from pouchdb-core (breaking)
|
||
PouchDB.plugin(applyChangesFilterPlugin);
|
||
|
||
PouchDB.version = version;
|
||
|
||
function toObject(array) {
|
||
return array.reduce(function (obj, item) {
|
||
obj[item] = true;
|
||
return obj;
|
||
}, {});
|
||
}
|
||
// List of top level reserved words for doc
|
||
var reservedWords = toObject([
|
||
'_id',
|
||
'_rev',
|
||
'_access',
|
||
'_attachments',
|
||
'_deleted',
|
||
'_revisions',
|
||
'_revs_info',
|
||
'_conflicts',
|
||
'_deleted_conflicts',
|
||
'_local_seq',
|
||
'_rev_tree',
|
||
// replication documents
|
||
'_replication_id',
|
||
'_replication_state',
|
||
'_replication_state_time',
|
||
'_replication_state_reason',
|
||
'_replication_stats',
|
||
// Specific to Couchbase Sync Gateway
|
||
'_removed'
|
||
]);
|
||
|
||
// List of reserved words that should end up in the document
|
||
var dataWords = toObject([
|
||
'_access',
|
||
'_attachments',
|
||
// replication documents
|
||
'_replication_id',
|
||
'_replication_state',
|
||
'_replication_state_time',
|
||
'_replication_state_reason',
|
||
'_replication_stats'
|
||
]);
|
||
|
||
function parseRevisionInfo(rev) {
|
||
if (!/^\d+-/.test(rev)) {
|
||
return createError(INVALID_REV);
|
||
}
|
||
var idx = rev.indexOf('-');
|
||
var left = rev.substring(0, idx);
|
||
var right = rev.substring(idx + 1);
|
||
return {
|
||
prefix: parseInt(left, 10),
|
||
id: right
|
||
};
|
||
}
|
||
|
||
function makeRevTreeFromRevisions(revisions, opts) {
|
||
var pos = revisions.start - revisions.ids.length + 1;
|
||
|
||
var revisionIds = revisions.ids;
|
||
var ids = [revisionIds[0], opts, []];
|
||
|
||
for (var i = 1, len = revisionIds.length; i < len; i++) {
|
||
ids = [revisionIds[i], {status: 'missing'}, [ids]];
|
||
}
|
||
|
||
return [{
|
||
pos: pos,
|
||
ids: ids
|
||
}];
|
||
}
|
||
|
||
// Preprocess documents, parse their revisions, assign an id and a
|
||
// revision for new writes that are missing them, etc
|
||
function parseDoc(doc, newEdits, dbOpts) {
|
||
if (!dbOpts) {
|
||
dbOpts = {
|
||
deterministic_revs: true
|
||
};
|
||
}
|
||
|
||
var nRevNum;
|
||
var newRevId;
|
||
var revInfo;
|
||
var opts = {status: 'available'};
|
||
if (doc._deleted) {
|
||
opts.deleted = true;
|
||
}
|
||
|
||
if (newEdits) {
|
||
if (!doc._id) {
|
||
doc._id = uuid();
|
||
}
|
||
newRevId = rev$$1(doc, dbOpts.deterministic_revs);
|
||
if (doc._rev) {
|
||
revInfo = parseRevisionInfo(doc._rev);
|
||
if (revInfo.error) {
|
||
return revInfo;
|
||
}
|
||
doc._rev_tree = [{
|
||
pos: revInfo.prefix,
|
||
ids: [revInfo.id, {status: 'missing'}, [[newRevId, opts, []]]]
|
||
}];
|
||
nRevNum = revInfo.prefix + 1;
|
||
} else {
|
||
doc._rev_tree = [{
|
||
pos: 1,
|
||
ids : [newRevId, opts, []]
|
||
}];
|
||
nRevNum = 1;
|
||
}
|
||
} else {
|
||
if (doc._revisions) {
|
||
doc._rev_tree = makeRevTreeFromRevisions(doc._revisions, opts);
|
||
nRevNum = doc._revisions.start;
|
||
newRevId = doc._revisions.ids[0];
|
||
}
|
||
if (!doc._rev_tree) {
|
||
revInfo = parseRevisionInfo(doc._rev);
|
||
if (revInfo.error) {
|
||
return revInfo;
|
||
}
|
||
nRevNum = revInfo.prefix;
|
||
newRevId = revInfo.id;
|
||
doc._rev_tree = [{
|
||
pos: nRevNum,
|
||
ids: [newRevId, opts, []]
|
||
}];
|
||
}
|
||
}
|
||
|
||
invalidIdError(doc._id);
|
||
|
||
doc._rev = nRevNum + '-' + newRevId;
|
||
|
||
var result = {metadata : {}, data : {}};
|
||
for (var key in doc) {
|
||
/* istanbul ignore else */
|
||
if (Object.prototype.hasOwnProperty.call(doc, key)) {
|
||
var specialKey = key[0] === '_';
|
||
if (specialKey && !reservedWords[key]) {
|
||
var error = createError(DOC_VALIDATION, key);
|
||
error.message = DOC_VALIDATION.message + ': ' + key;
|
||
throw error;
|
||
} else if (specialKey && !dataWords[key]) {
|
||
result.metadata[key.slice(1)] = doc[key];
|
||
} else {
|
||
result.data[key] = doc[key];
|
||
}
|
||
}
|
||
}
|
||
return result;
|
||
}
|
||
|
||
function parseBase64(data) {
|
||
try {
|
||
return thisAtob(data);
|
||
} catch (e) {
|
||
var err = createError(BAD_ARG,
|
||
'Attachment is not a valid base64 string');
|
||
return {error: err};
|
||
}
|
||
}
|
||
|
||
function preprocessString(att, blobType, callback) {
|
||
var asBinary = parseBase64(att.data);
|
||
if (asBinary.error) {
|
||
return callback(asBinary.error);
|
||
}
|
||
|
||
att.length = asBinary.length;
|
||
if (blobType === 'blob') {
|
||
att.data = binStringToBluffer(asBinary, att.content_type);
|
||
} else if (blobType === 'base64') {
|
||
att.data = thisBtoa(asBinary);
|
||
} else { // binary
|
||
att.data = asBinary;
|
||
}
|
||
binaryMd5(asBinary, function (result) {
|
||
att.digest = 'md5-' + result;
|
||
callback();
|
||
});
|
||
}
|
||
|
||
function preprocessBlob(att, blobType, callback) {
|
||
binaryMd5(att.data, function (md5) {
|
||
att.digest = 'md5-' + md5;
|
||
// size is for blobs (browser), length is for buffers (node)
|
||
att.length = att.data.size || att.data.length || 0;
|
||
if (blobType === 'binary') {
|
||
blobToBinaryString(att.data, function (binString) {
|
||
att.data = binString;
|
||
callback();
|
||
});
|
||
} else if (blobType === 'base64') {
|
||
blobToBase64(att.data, function (b64) {
|
||
att.data = b64;
|
||
callback();
|
||
});
|
||
} else {
|
||
callback();
|
||
}
|
||
});
|
||
}
|
||
|
||
function preprocessAttachment(att, blobType, callback) {
|
||
if (att.stub) {
|
||
return callback();
|
||
}
|
||
if (typeof att.data === 'string') { // input is a base64 string
|
||
preprocessString(att, blobType, callback);
|
||
} else { // input is a blob
|
||
preprocessBlob(att, blobType, callback);
|
||
}
|
||
}
|
||
|
||
function preprocessAttachments(docInfos, blobType, callback) {
|
||
|
||
if (!docInfos.length) {
|
||
return callback();
|
||
}
|
||
|
||
var docv = 0;
|
||
var overallErr;
|
||
|
||
docInfos.forEach(function (docInfo) {
|
||
var attachments = docInfo.data && docInfo.data._attachments ?
|
||
Object.keys(docInfo.data._attachments) : [];
|
||
var recv = 0;
|
||
|
||
if (!attachments.length) {
|
||
return done();
|
||
}
|
||
|
||
function processedAttachment(err) {
|
||
overallErr = err;
|
||
recv++;
|
||
if (recv === attachments.length) {
|
||
done();
|
||
}
|
||
}
|
||
|
||
for (var key in docInfo.data._attachments) {
|
||
if (Object.prototype.hasOwnProperty.call(docInfo.data._attachments, key)) {
|
||
preprocessAttachment(docInfo.data._attachments[key],
|
||
blobType, processedAttachment);
|
||
}
|
||
}
|
||
});
|
||
|
||
function done() {
|
||
docv++;
|
||
if (docInfos.length === docv) {
|
||
if (overallErr) {
|
||
callback(overallErr);
|
||
} else {
|
||
callback();
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
function updateDoc(revLimit, prev, docInfo, results,
|
||
i, cb, writeDoc, newEdits) {
|
||
|
||
if (revExists(prev.rev_tree, docInfo.metadata.rev) && !newEdits) {
|
||
results[i] = docInfo;
|
||
return cb();
|
||
}
|
||
|
||
// sometimes this is pre-calculated. historically not always
|
||
var previousWinningRev = prev.winningRev || winningRev(prev);
|
||
var previouslyDeleted = 'deleted' in prev ? prev.deleted :
|
||
isDeleted(prev, previousWinningRev);
|
||
var deleted = 'deleted' in docInfo.metadata ? docInfo.metadata.deleted :
|
||
isDeleted(docInfo.metadata);
|
||
var isRoot = /^1-/.test(docInfo.metadata.rev);
|
||
|
||
if (previouslyDeleted && !deleted && newEdits && isRoot) {
|
||
var newDoc = docInfo.data;
|
||
newDoc._rev = previousWinningRev;
|
||
newDoc._id = docInfo.metadata.id;
|
||
docInfo = parseDoc(newDoc, newEdits);
|
||
}
|
||
|
||
var merged = merge(prev.rev_tree, docInfo.metadata.rev_tree[0], revLimit);
|
||
|
||
var inConflict = newEdits && ((
|
||
(previouslyDeleted && deleted && merged.conflicts !== 'new_leaf') ||
|
||
(!previouslyDeleted && merged.conflicts !== 'new_leaf') ||
|
||
(previouslyDeleted && !deleted && merged.conflicts === 'new_branch')));
|
||
|
||
if (inConflict) {
|
||
var err = createError(REV_CONFLICT);
|
||
results[i] = err;
|
||
return cb();
|
||
}
|
||
|
||
var newRev = docInfo.metadata.rev;
|
||
docInfo.metadata.rev_tree = merged.tree;
|
||
docInfo.stemmedRevs = merged.stemmedRevs || [];
|
||
/* istanbul ignore else */
|
||
if (prev.rev_map) {
|
||
docInfo.metadata.rev_map = prev.rev_map; // used only by leveldb
|
||
}
|
||
|
||
// recalculate
|
||
var winningRev$$1 = winningRev(docInfo.metadata);
|
||
var winningRevIsDeleted = isDeleted(docInfo.metadata, winningRev$$1);
|
||
|
||
// calculate the total number of documents that were added/removed,
|
||
// from the perspective of total_rows/doc_count
|
||
var delta = (previouslyDeleted === winningRevIsDeleted) ? 0 :
|
||
previouslyDeleted < winningRevIsDeleted ? -1 : 1;
|
||
|
||
var newRevIsDeleted;
|
||
if (newRev === winningRev$$1) {
|
||
// if the new rev is the same as the winning rev, we can reuse that value
|
||
newRevIsDeleted = winningRevIsDeleted;
|
||
} else {
|
||
// if they're not the same, then we need to recalculate
|
||
newRevIsDeleted = isDeleted(docInfo.metadata, newRev);
|
||
}
|
||
|
||
writeDoc(docInfo, winningRev$$1, winningRevIsDeleted, newRevIsDeleted,
|
||
true, delta, i, cb);
|
||
}
|
||
|
||
function rootIsMissing(docInfo) {
|
||
return docInfo.metadata.rev_tree[0].ids[1].status === 'missing';
|
||
}
|
||
|
||
function processDocs(revLimit, docInfos, api, fetchedDocs, tx, results,
|
||
writeDoc, opts, overallCallback) {
|
||
|
||
// Default to 1000 locally
|
||
revLimit = revLimit || 1000;
|
||
|
||
function insertDoc(docInfo, resultsIdx, callback) {
|
||
// Cant insert new deleted documents
|
||
var winningRev$$1 = winningRev(docInfo.metadata);
|
||
var deleted = isDeleted(docInfo.metadata, winningRev$$1);
|
||
if ('was_delete' in opts && deleted) {
|
||
results[resultsIdx] = createError(MISSING_DOC, 'deleted');
|
||
return callback();
|
||
}
|
||
|
||
// 4712 - detect whether a new document was inserted with a _rev
|
||
var inConflict = newEdits && rootIsMissing(docInfo);
|
||
|
||
if (inConflict) {
|
||
var err = createError(REV_CONFLICT);
|
||
results[resultsIdx] = err;
|
||
return callback();
|
||
}
|
||
|
||
var delta = deleted ? 0 : 1;
|
||
|
||
writeDoc(docInfo, winningRev$$1, deleted, deleted, false,
|
||
delta, resultsIdx, callback);
|
||
}
|
||
|
||
var newEdits = opts.new_edits;
|
||
var idsToDocs = new ExportedMap();
|
||
|
||
var docsDone = 0;
|
||
var docsToDo = docInfos.length;
|
||
|
||
function checkAllDocsDone() {
|
||
if (++docsDone === docsToDo && overallCallback) {
|
||
overallCallback();
|
||
}
|
||
}
|
||
|
||
docInfos.forEach(function (currentDoc, resultsIdx) {
|
||
|
||
if (currentDoc._id && isLocalId(currentDoc._id)) {
|
||
var fun = currentDoc._deleted ? '_removeLocal' : '_putLocal';
|
||
api[fun](currentDoc, {ctx: tx}, function (err, res) {
|
||
results[resultsIdx] = err || res;
|
||
checkAllDocsDone();
|
||
});
|
||
return;
|
||
}
|
||
|
||
var id = currentDoc.metadata.id;
|
||
if (idsToDocs.has(id)) {
|
||
docsToDo--; // duplicate
|
||
idsToDocs.get(id).push([currentDoc, resultsIdx]);
|
||
} else {
|
||
idsToDocs.set(id, [[currentDoc, resultsIdx]]);
|
||
}
|
||
});
|
||
|
||
// in the case of new_edits, the user can provide multiple docs
|
||
// with the same id. these need to be processed sequentially
|
||
idsToDocs.forEach(function (docs, id) {
|
||
var numDone = 0;
|
||
|
||
function docWritten() {
|
||
if (++numDone < docs.length) {
|
||
nextDoc();
|
||
} else {
|
||
checkAllDocsDone();
|
||
}
|
||
}
|
||
function nextDoc() {
|
||
var value = docs[numDone];
|
||
var currentDoc = value[0];
|
||
var resultsIdx = value[1];
|
||
|
||
if (fetchedDocs.has(id)) {
|
||
updateDoc(revLimit, fetchedDocs.get(id), currentDoc, results,
|
||
resultsIdx, docWritten, writeDoc, newEdits);
|
||
} else {
|
||
// Ensure stemming applies to new writes as well
|
||
var merged = merge([], currentDoc.metadata.rev_tree[0], revLimit);
|
||
currentDoc.metadata.rev_tree = merged.tree;
|
||
currentDoc.stemmedRevs = merged.stemmedRevs || [];
|
||
insertDoc(currentDoc, resultsIdx, docWritten);
|
||
}
|
||
}
|
||
nextDoc();
|
||
});
|
||
}
|
||
|
||
// IndexedDB requires a versioned database structure, so we use the
|
||
// version here to manage migrations.
|
||
var ADAPTER_VERSION = 5;
|
||
|
||
// The object stores created for each database
|
||
// DOC_STORE stores the document meta data, its revision history and state
|
||
// Keyed by document id
|
||
var DOC_STORE = 'document-store';
|
||
// BY_SEQ_STORE stores a particular version of a document, keyed by its
|
||
// sequence id
|
||
var BY_SEQ_STORE = 'by-sequence';
|
||
// Where we store attachments
|
||
var ATTACH_STORE = 'attach-store';
|
||
// Where we store many-to-many relations
|
||
// between attachment digests and seqs
|
||
var ATTACH_AND_SEQ_STORE = 'attach-seq-store';
|
||
|
||
// Where we store database-wide meta data in a single record
|
||
// keyed by id: META_STORE
|
||
var META_STORE = 'meta-store';
|
||
// Where we store local documents
|
||
var LOCAL_STORE = 'local-store';
|
||
// Where we detect blob support
|
||
var DETECT_BLOB_SUPPORT_STORE = 'detect-blob-support';
|
||
|
||
function safeJsonParse(str) {
|
||
// This try/catch guards against stack overflow errors.
|
||
// JSON.parse() is faster than vuvuzela.parse() but vuvuzela
|
||
// cannot overflow.
|
||
try {
|
||
return JSON.parse(str);
|
||
} catch (e) {
|
||
/* istanbul ignore next */
|
||
return vuvuzela.parse(str);
|
||
}
|
||
}
|
||
|
||
function safeJsonStringify(json) {
|
||
try {
|
||
return JSON.stringify(json);
|
||
} catch (e) {
|
||
/* istanbul ignore next */
|
||
return vuvuzela.stringify(json);
|
||
}
|
||
}
|
||
|
||
function idbError(callback) {
|
||
return function (evt) {
|
||
var message = 'unknown_error';
|
||
if (evt.target && evt.target.error) {
|
||
message = evt.target.error.name || evt.target.error.message;
|
||
}
|
||
callback(createError(IDB_ERROR, message, evt.type));
|
||
};
|
||
}
|
||
|
||
// Unfortunately, the metadata has to be stringified
|
||
// when it is put into the database, because otherwise
|
||
// IndexedDB can throw errors for deeply-nested objects.
|
||
// Originally we just used JSON.parse/JSON.stringify; now
|
||
// we use this custom vuvuzela library that avoids recursion.
|
||
// If we could do it all over again, we'd probably use a
|
||
// format for the revision trees other than JSON.
|
||
function encodeMetadata(metadata, winningRev, deleted) {
|
||
return {
|
||
data: safeJsonStringify(metadata),
|
||
winningRev: winningRev,
|
||
deletedOrLocal: deleted ? '1' : '0',
|
||
seq: metadata.seq, // highest seq for this doc
|
||
id: metadata.id
|
||
};
|
||
}
|
||
|
||
function decodeMetadata(storedObject) {
|
||
if (!storedObject) {
|
||
return null;
|
||
}
|
||
var metadata = safeJsonParse(storedObject.data);
|
||
metadata.winningRev = storedObject.winningRev;
|
||
metadata.deleted = storedObject.deletedOrLocal === '1';
|
||
metadata.seq = storedObject.seq;
|
||
return metadata;
|
||
}
|
||
|
||
// read the doc back out from the database. we don't store the
|
||
// _id or _rev because we already have _doc_id_rev.
|
||
function decodeDoc(doc) {
|
||
if (!doc) {
|
||
return doc;
|
||
}
|
||
var idx = doc._doc_id_rev.lastIndexOf(':');
|
||
doc._id = doc._doc_id_rev.substring(0, idx - 1);
|
||
doc._rev = doc._doc_id_rev.substring(idx + 1);
|
||
delete doc._doc_id_rev;
|
||
return doc;
|
||
}
|
||
|
||
// Read a blob from the database, encoding as necessary
|
||
// and translating from base64 if the IDB doesn't support
|
||
// native Blobs
|
||
function readBlobData(body, type, asBlob, callback) {
|
||
if (asBlob) {
|
||
if (!body) {
|
||
callback(createBlob([''], {type: type}));
|
||
} else if (typeof body !== 'string') { // we have blob support
|
||
callback(body);
|
||
} else { // no blob support
|
||
callback(b64ToBluffer(body, type));
|
||
}
|
||
} else { // as base64 string
|
||
if (!body) {
|
||
callback('');
|
||
} else if (typeof body !== 'string') { // we have blob support
|
||
readAsBinaryString(body, function (binary) {
|
||
callback(thisBtoa(binary));
|
||
});
|
||
} else { // no blob support
|
||
callback(body);
|
||
}
|
||
}
|
||
}
|
||
|
||
function fetchAttachmentsIfNecessary(doc, opts, txn, cb) {
|
||
var attachments = Object.keys(doc._attachments || {});
|
||
if (!attachments.length) {
|
||
return cb && cb();
|
||
}
|
||
var numDone = 0;
|
||
|
||
function checkDone() {
|
||
if (++numDone === attachments.length && cb) {
|
||
cb();
|
||
}
|
||
}
|
||
|
||
function fetchAttachment(doc, att) {
|
||
var attObj = doc._attachments[att];
|
||
var digest = attObj.digest;
|
||
var req = txn.objectStore(ATTACH_STORE).get(digest);
|
||
req.onsuccess = function (e) {
|
||
attObj.body = e.target.result.body;
|
||
checkDone();
|
||
};
|
||
}
|
||
|
||
attachments.forEach(function (att) {
|
||
if (opts.attachments && opts.include_docs) {
|
||
fetchAttachment(doc, att);
|
||
} else {
|
||
doc._attachments[att].stub = true;
|
||
checkDone();
|
||
}
|
||
});
|
||
}
|
||
|
||
// IDB-specific postprocessing necessary because
|
||
// we don't know whether we stored a true Blob or
|
||
// a base64-encoded string, and if it's a Blob it
|
||
// needs to be read outside of the transaction context
|
||
function postProcessAttachments(results, asBlob) {
|
||
return Promise.all(results.map(function (row) {
|
||
if (row.doc && row.doc._attachments) {
|
||
var attNames = Object.keys(row.doc._attachments);
|
||
return Promise.all(attNames.map(function (att) {
|
||
var attObj = row.doc._attachments[att];
|
||
if (!('body' in attObj)) { // already processed
|
||
return;
|
||
}
|
||
var body = attObj.body;
|
||
var type = attObj.content_type;
|
||
return new Promise(function (resolve) {
|
||
readBlobData(body, type, asBlob, function (data) {
|
||
row.doc._attachments[att] = $inject_Object_assign(
|
||
pick(attObj, ['digest', 'content_type']),
|
||
{data: data}
|
||
);
|
||
resolve();
|
||
});
|
||
});
|
||
}));
|
||
}
|
||
}));
|
||
}
|
||
|
||
function compactRevs(revs, docId, txn) {
|
||
|
||
var possiblyOrphanedDigests = [];
|
||
var seqStore = txn.objectStore(BY_SEQ_STORE);
|
||
var attStore = txn.objectStore(ATTACH_STORE);
|
||
var attAndSeqStore = txn.objectStore(ATTACH_AND_SEQ_STORE);
|
||
var count = revs.length;
|
||
|
||
function checkDone() {
|
||
count--;
|
||
if (!count) { // done processing all revs
|
||
deleteOrphanedAttachments();
|
||
}
|
||
}
|
||
|
||
function deleteOrphanedAttachments() {
|
||
if (!possiblyOrphanedDigests.length) {
|
||
return;
|
||
}
|
||
possiblyOrphanedDigests.forEach(function (digest) {
|
||
var countReq = attAndSeqStore.index('digestSeq').count(
|
||
IDBKeyRange.bound(
|
||
digest + '::', digest + '::\uffff', false, false));
|
||
countReq.onsuccess = function (e) {
|
||
var count = e.target.result;
|
||
if (!count) {
|
||
// orphaned
|
||
attStore.delete(digest);
|
||
}
|
||
};
|
||
});
|
||
}
|
||
|
||
revs.forEach(function (rev) {
|
||
var index = seqStore.index('_doc_id_rev');
|
||
var key = docId + "::" + rev;
|
||
index.getKey(key).onsuccess = function (e) {
|
||
var seq = e.target.result;
|
||
if (typeof seq !== 'number') {
|
||
return checkDone();
|
||
}
|
||
seqStore.delete(seq);
|
||
|
||
var cursor = attAndSeqStore.index('seq')
|
||
.openCursor(IDBKeyRange.only(seq));
|
||
|
||
cursor.onsuccess = function (event) {
|
||
var cursor = event.target.result;
|
||
if (cursor) {
|
||
var digest = cursor.value.digestSeq.split('::')[0];
|
||
possiblyOrphanedDigests.push(digest);
|
||
attAndSeqStore.delete(cursor.primaryKey);
|
||
cursor.continue();
|
||
} else { // done
|
||
checkDone();
|
||
}
|
||
};
|
||
};
|
||
});
|
||
}
|
||
|
||
function openTransactionSafely(idb, stores, mode) {
|
||
try {
|
||
return {
|
||
txn: idb.transaction(stores, mode)
|
||
};
|
||
} catch (err) {
|
||
return {
|
||
error: err
|
||
};
|
||
}
|
||
}
|
||
|
||
var changesHandler = new Changes();
|
||
|
||
function idbBulkDocs(dbOpts, req, opts, api, idb, callback) {
|
||
var docInfos = req.docs;
|
||
var txn;
|
||
var docStore;
|
||
var bySeqStore;
|
||
var attachStore;
|
||
var attachAndSeqStore;
|
||
var metaStore;
|
||
var docInfoError;
|
||
var metaDoc;
|
||
|
||
for (var i = 0, len = docInfos.length; i < len; i++) {
|
||
var doc = docInfos[i];
|
||
if (doc._id && isLocalId(doc._id)) {
|
||
continue;
|
||
}
|
||
doc = docInfos[i] = parseDoc(doc, opts.new_edits, dbOpts);
|
||
if (doc.error && !docInfoError) {
|
||
docInfoError = doc;
|
||
}
|
||
}
|
||
|
||
if (docInfoError) {
|
||
return callback(docInfoError);
|
||
}
|
||
|
||
var allDocsProcessed = false;
|
||
var docCountDelta = 0;
|
||
var results = new Array(docInfos.length);
|
||
var fetchedDocs = new ExportedMap();
|
||
var preconditionErrored = false;
|
||
var blobType = api._meta.blobSupport ? 'blob' : 'base64';
|
||
|
||
preprocessAttachments(docInfos, blobType, function (err) {
|
||
if (err) {
|
||
return callback(err);
|
||
}
|
||
startTransaction();
|
||
});
|
||
|
||
function startTransaction() {
|
||
|
||
var stores = [
|
||
DOC_STORE, BY_SEQ_STORE,
|
||
ATTACH_STORE,
|
||
LOCAL_STORE, ATTACH_AND_SEQ_STORE,
|
||
META_STORE
|
||
];
|
||
var txnResult = openTransactionSafely(idb, stores, 'readwrite');
|
||
if (txnResult.error) {
|
||
return callback(txnResult.error);
|
||
}
|
||
txn = txnResult.txn;
|
||
txn.onabort = idbError(callback);
|
||
txn.ontimeout = idbError(callback);
|
||
txn.oncomplete = complete;
|
||
docStore = txn.objectStore(DOC_STORE);
|
||
bySeqStore = txn.objectStore(BY_SEQ_STORE);
|
||
attachStore = txn.objectStore(ATTACH_STORE);
|
||
attachAndSeqStore = txn.objectStore(ATTACH_AND_SEQ_STORE);
|
||
metaStore = txn.objectStore(META_STORE);
|
||
|
||
metaStore.get(META_STORE).onsuccess = function (e) {
|
||
metaDoc = e.target.result;
|
||
updateDocCountIfReady();
|
||
};
|
||
|
||
verifyAttachments(function (err) {
|
||
if (err) {
|
||
preconditionErrored = true;
|
||
return callback(err);
|
||
}
|
||
fetchExistingDocs();
|
||
});
|
||
}
|
||
|
||
function onAllDocsProcessed() {
|
||
allDocsProcessed = true;
|
||
updateDocCountIfReady();
|
||
}
|
||
|
||
function idbProcessDocs() {
|
||
processDocs(dbOpts.revs_limit, docInfos, api, fetchedDocs,
|
||
txn, results, writeDoc, opts, onAllDocsProcessed);
|
||
}
|
||
|
||
function updateDocCountIfReady() {
|
||
if (!metaDoc || !allDocsProcessed) {
|
||
return;
|
||
}
|
||
// caching the docCount saves a lot of time in allDocs() and
|
||
// info(), which is why we go to all the trouble of doing this
|
||
metaDoc.docCount += docCountDelta;
|
||
metaStore.put(metaDoc);
|
||
}
|
||
|
||
function fetchExistingDocs() {
|
||
|
||
if (!docInfos.length) {
|
||
return;
|
||
}
|
||
|
||
var numFetched = 0;
|
||
|
||
function checkDone() {
|
||
if (++numFetched === docInfos.length) {
|
||
idbProcessDocs();
|
||
}
|
||
}
|
||
|
||
function readMetadata(event) {
|
||
var metadata = decodeMetadata(event.target.result);
|
||
|
||
if (metadata) {
|
||
fetchedDocs.set(metadata.id, metadata);
|
||
}
|
||
checkDone();
|
||
}
|
||
|
||
for (var i = 0, len = docInfos.length; i < len; i++) {
|
||
var docInfo = docInfos[i];
|
||
if (docInfo._id && isLocalId(docInfo._id)) {
|
||
checkDone(); // skip local docs
|
||
continue;
|
||
}
|
||
var req = docStore.get(docInfo.metadata.id);
|
||
req.onsuccess = readMetadata;
|
||
}
|
||
}
|
||
|
||
function complete() {
|
||
if (preconditionErrored) {
|
||
return;
|
||
}
|
||
|
||
changesHandler.notify(api._meta.name);
|
||
callback(null, results);
|
||
}
|
||
|
||
function verifyAttachment(digest, callback) {
|
||
|
||
var req = attachStore.get(digest);
|
||
req.onsuccess = function (e) {
|
||
if (!e.target.result) {
|
||
var err = createError(MISSING_STUB,
|
||
'unknown stub attachment with digest ' +
|
||
digest);
|
||
err.status = 412;
|
||
callback(err);
|
||
} else {
|
||
callback();
|
||
}
|
||
};
|
||
}
|
||
|
||
function verifyAttachments(finish) {
|
||
|
||
|
||
var digests = [];
|
||
docInfos.forEach(function (docInfo) {
|
||
if (docInfo.data && docInfo.data._attachments) {
|
||
Object.keys(docInfo.data._attachments).forEach(function (filename) {
|
||
var att = docInfo.data._attachments[filename];
|
||
if (att.stub) {
|
||
digests.push(att.digest);
|
||
}
|
||
});
|
||
}
|
||
});
|
||
if (!digests.length) {
|
||
return finish();
|
||
}
|
||
var numDone = 0;
|
||
var err;
|
||
|
||
function checkDone() {
|
||
if (++numDone === digests.length) {
|
||
finish(err);
|
||
}
|
||
}
|
||
digests.forEach(function (digest) {
|
||
verifyAttachment(digest, function (attErr) {
|
||
if (attErr && !err) {
|
||
err = attErr;
|
||
}
|
||
checkDone();
|
||
});
|
||
});
|
||
}
|
||
|
||
function writeDoc(docInfo, winningRev$$1, winningRevIsDeleted, newRevIsDeleted,
|
||
isUpdate, delta, resultsIdx, callback) {
|
||
|
||
docInfo.metadata.winningRev = winningRev$$1;
|
||
docInfo.metadata.deleted = winningRevIsDeleted;
|
||
|
||
var doc = docInfo.data;
|
||
doc._id = docInfo.metadata.id;
|
||
doc._rev = docInfo.metadata.rev;
|
||
|
||
if (newRevIsDeleted) {
|
||
doc._deleted = true;
|
||
}
|
||
|
||
var hasAttachments = doc._attachments &&
|
||
Object.keys(doc._attachments).length;
|
||
if (hasAttachments) {
|
||
return writeAttachments(docInfo, winningRev$$1, winningRevIsDeleted,
|
||
isUpdate, resultsIdx, callback);
|
||
}
|
||
|
||
docCountDelta += delta;
|
||
updateDocCountIfReady();
|
||
|
||
finishDoc(docInfo, winningRev$$1, winningRevIsDeleted,
|
||
isUpdate, resultsIdx, callback);
|
||
}
|
||
|
||
function finishDoc(docInfo, winningRev$$1, winningRevIsDeleted,
|
||
isUpdate, resultsIdx, callback) {
|
||
|
||
var doc = docInfo.data;
|
||
var metadata = docInfo.metadata;
|
||
|
||
doc._doc_id_rev = metadata.id + '::' + metadata.rev;
|
||
delete doc._id;
|
||
delete doc._rev;
|
||
|
||
function afterPutDoc(e) {
|
||
var revsToDelete = docInfo.stemmedRevs || [];
|
||
|
||
if (isUpdate && api.auto_compaction) {
|
||
revsToDelete = revsToDelete.concat(compactTree(docInfo.metadata));
|
||
}
|
||
|
||
if (revsToDelete && revsToDelete.length) {
|
||
compactRevs(revsToDelete, docInfo.metadata.id, txn);
|
||
}
|
||
|
||
metadata.seq = e.target.result;
|
||
// Current _rev is calculated from _rev_tree on read
|
||
// delete metadata.rev;
|
||
var metadataToStore = encodeMetadata(metadata, winningRev$$1,
|
||
winningRevIsDeleted);
|
||
var metaDataReq = docStore.put(metadataToStore);
|
||
metaDataReq.onsuccess = afterPutMetadata;
|
||
}
|
||
|
||
function afterPutDocError(e) {
|
||
// ConstraintError, need to update, not put (see #1638 for details)
|
||
e.preventDefault(); // avoid transaction abort
|
||
e.stopPropagation(); // avoid transaction onerror
|
||
var index = bySeqStore.index('_doc_id_rev');
|
||
var getKeyReq = index.getKey(doc._doc_id_rev);
|
||
getKeyReq.onsuccess = function (e) {
|
||
var putReq = bySeqStore.put(doc, e.target.result);
|
||
putReq.onsuccess = afterPutDoc;
|
||
};
|
||
}
|
||
|
||
function afterPutMetadata() {
|
||
results[resultsIdx] = {
|
||
ok: true,
|
||
id: metadata.id,
|
||
rev: metadata.rev
|
||
};
|
||
fetchedDocs.set(docInfo.metadata.id, docInfo.metadata);
|
||
insertAttachmentMappings(docInfo, metadata.seq, callback);
|
||
}
|
||
|
||
var putReq = bySeqStore.put(doc);
|
||
|
||
putReq.onsuccess = afterPutDoc;
|
||
putReq.onerror = afterPutDocError;
|
||
}
|
||
|
||
function writeAttachments(docInfo, winningRev$$1, winningRevIsDeleted,
|
||
isUpdate, resultsIdx, callback) {
|
||
|
||
|
||
var doc = docInfo.data;
|
||
|
||
var numDone = 0;
|
||
var attachments = Object.keys(doc._attachments);
|
||
|
||
function collectResults() {
|
||
if (numDone === attachments.length) {
|
||
finishDoc(docInfo, winningRev$$1, winningRevIsDeleted,
|
||
isUpdate, resultsIdx, callback);
|
||
}
|
||
}
|
||
|
||
function attachmentSaved() {
|
||
numDone++;
|
||
collectResults();
|
||
}
|
||
|
||
attachments.forEach(function (key) {
|
||
var att = docInfo.data._attachments[key];
|
||
if (!att.stub) {
|
||
var data = att.data;
|
||
delete att.data;
|
||
att.revpos = parseInt(winningRev$$1, 10);
|
||
var digest = att.digest;
|
||
saveAttachment(digest, data, attachmentSaved);
|
||
} else {
|
||
numDone++;
|
||
collectResults();
|
||
}
|
||
});
|
||
}
|
||
|
||
// map seqs to attachment digests, which
|
||
// we will need later during compaction
|
||
function insertAttachmentMappings(docInfo, seq, callback) {
|
||
|
||
var attsAdded = 0;
|
||
var attsToAdd = Object.keys(docInfo.data._attachments || {});
|
||
|
||
if (!attsToAdd.length) {
|
||
return callback();
|
||
}
|
||
|
||
function checkDone() {
|
||
if (++attsAdded === attsToAdd.length) {
|
||
callback();
|
||
}
|
||
}
|
||
|
||
function add(att) {
|
||
var digest = docInfo.data._attachments[att].digest;
|
||
var req = attachAndSeqStore.put({
|
||
seq: seq,
|
||
digestSeq: digest + '::' + seq
|
||
});
|
||
|
||
req.onsuccess = checkDone;
|
||
req.onerror = function (e) {
|
||
// this callback is for a constaint error, which we ignore
|
||
// because this docid/rev has already been associated with
|
||
// the digest (e.g. when new_edits == false)
|
||
e.preventDefault(); // avoid transaction abort
|
||
e.stopPropagation(); // avoid transaction onerror
|
||
checkDone();
|
||
};
|
||
}
|
||
for (var i = 0; i < attsToAdd.length; i++) {
|
||
add(attsToAdd[i]); // do in parallel
|
||
}
|
||
}
|
||
|
||
function saveAttachment(digest, data, callback) {
|
||
|
||
|
||
var getKeyReq = attachStore.count(digest);
|
||
getKeyReq.onsuccess = function (e) {
|
||
var count = e.target.result;
|
||
if (count) {
|
||
return callback(); // already exists
|
||
}
|
||
var newAtt = {
|
||
digest: digest,
|
||
body: data
|
||
};
|
||
var putReq = attachStore.put(newAtt);
|
||
putReq.onsuccess = callback;
|
||
};
|
||
}
|
||
}
|
||
|
||
// Abstraction over IDBCursor and getAll()/getAllKeys() that allows us to batch our operations
|
||
// while falling back to a normal IDBCursor operation on browsers that don't support getAll() or
|
||
// getAllKeys(). This allows for a much faster implementation than just straight-up cursors, because
|
||
// we're not processing each document one-at-a-time.
|
||
function runBatchedCursor(objectStore, keyRange, descending, batchSize, onBatch) {
|
||
|
||
if (batchSize === -1) {
|
||
batchSize = 1000;
|
||
}
|
||
|
||
// Bail out of getAll()/getAllKeys() in the following cases:
|
||
// 1) either method is unsupported - we need both
|
||
// 2) batchSize is 1 (might as well use IDBCursor)
|
||
// 3) descending – no real way to do this via getAll()/getAllKeys()
|
||
|
||
var useGetAll = typeof objectStore.getAll === 'function' &&
|
||
typeof objectStore.getAllKeys === 'function' &&
|
||
batchSize > 1 && !descending;
|
||
|
||
var keysBatch;
|
||
var valuesBatch;
|
||
var pseudoCursor;
|
||
|
||
function onGetAll(e) {
|
||
valuesBatch = e.target.result;
|
||
if (keysBatch) {
|
||
onBatch(keysBatch, valuesBatch, pseudoCursor);
|
||
}
|
||
}
|
||
|
||
function onGetAllKeys(e) {
|
||
keysBatch = e.target.result;
|
||
if (valuesBatch) {
|
||
onBatch(keysBatch, valuesBatch, pseudoCursor);
|
||
}
|
||
}
|
||
|
||
function continuePseudoCursor() {
|
||
if (!keysBatch.length) { // no more results
|
||
return onBatch();
|
||
}
|
||
// fetch next batch, exclusive start
|
||
var lastKey = keysBatch[keysBatch.length - 1];
|
||
var newKeyRange;
|
||
if (keyRange && keyRange.upper) {
|
||
try {
|
||
newKeyRange = IDBKeyRange.bound(lastKey, keyRange.upper,
|
||
true, keyRange.upperOpen);
|
||
} catch (e) {
|
||
if (e.name === "DataError" && e.code === 0) {
|
||
return onBatch(); // we're done, startkey and endkey are equal
|
||
}
|
||
}
|
||
} else {
|
||
newKeyRange = IDBKeyRange.lowerBound(lastKey, true);
|
||
}
|
||
keyRange = newKeyRange;
|
||
keysBatch = null;
|
||
valuesBatch = null;
|
||
objectStore.getAll(keyRange, batchSize).onsuccess = onGetAll;
|
||
objectStore.getAllKeys(keyRange, batchSize).onsuccess = onGetAllKeys;
|
||
}
|
||
|
||
function onCursor(e) {
|
||
var cursor = e.target.result;
|
||
if (!cursor) { // done
|
||
return onBatch();
|
||
}
|
||
// regular IDBCursor acts like a batch where batch size is always 1
|
||
onBatch([cursor.key], [cursor.value], cursor);
|
||
}
|
||
|
||
if (useGetAll) {
|
||
pseudoCursor = {"continue": continuePseudoCursor};
|
||
objectStore.getAll(keyRange, batchSize).onsuccess = onGetAll;
|
||
objectStore.getAllKeys(keyRange, batchSize).onsuccess = onGetAllKeys;
|
||
} else if (descending) {
|
||
objectStore.openCursor(keyRange, 'prev').onsuccess = onCursor;
|
||
} else {
|
||
objectStore.openCursor(keyRange).onsuccess = onCursor;
|
||
}
|
||
}
|
||
|
||
// simple shim for objectStore.getAll(), falling back to IDBCursor
|
||
function getAll(objectStore, keyRange, onSuccess) {
|
||
if (typeof objectStore.getAll === 'function') {
|
||
// use native getAll
|
||
objectStore.getAll(keyRange).onsuccess = onSuccess;
|
||
return;
|
||
}
|
||
// fall back to cursors
|
||
var values = [];
|
||
|
||
function onCursor(e) {
|
||
var cursor = e.target.result;
|
||
if (cursor) {
|
||
values.push(cursor.value);
|
||
cursor.continue();
|
||
} else {
|
||
onSuccess({
|
||
target: {
|
||
result: values
|
||
}
|
||
});
|
||
}
|
||
}
|
||
|
||
objectStore.openCursor(keyRange).onsuccess = onCursor;
|
||
}
|
||
|
||
function allDocsKeys(keys, docStore, onBatch) {
|
||
// It's not guaranted to be returned in right order
|
||
var valuesBatch = new Array(keys.length);
|
||
var count = 0;
|
||
keys.forEach(function (key, index) {
|
||
docStore.get(key).onsuccess = function (event) {
|
||
if (event.target.result) {
|
||
valuesBatch[index] = event.target.result;
|
||
} else {
|
||
valuesBatch[index] = {key: key, error: 'not_found'};
|
||
}
|
||
count++;
|
||
if (count === keys.length) {
|
||
onBatch(keys, valuesBatch, {});
|
||
}
|
||
};
|
||
});
|
||
}
|
||
|
||
function createKeyRange(start, end, inclusiveEnd, key, descending) {
|
||
try {
|
||
if (start && end) {
|
||
if (descending) {
|
||
return IDBKeyRange.bound(end, start, !inclusiveEnd, false);
|
||
} else {
|
||
return IDBKeyRange.bound(start, end, false, !inclusiveEnd);
|
||
}
|
||
} else if (start) {
|
||
if (descending) {
|
||
return IDBKeyRange.upperBound(start);
|
||
} else {
|
||
return IDBKeyRange.lowerBound(start);
|
||
}
|
||
} else if (end) {
|
||
if (descending) {
|
||
return IDBKeyRange.lowerBound(end, !inclusiveEnd);
|
||
} else {
|
||
return IDBKeyRange.upperBound(end, !inclusiveEnd);
|
||
}
|
||
} else if (key) {
|
||
return IDBKeyRange.only(key);
|
||
}
|
||
} catch (e) {
|
||
return {error: e};
|
||
}
|
||
return null;
|
||
}
|
||
|
||
function idbAllDocs(opts, idb, callback) {
|
||
var start = 'startkey' in opts ? opts.startkey : false;
|
||
var end = 'endkey' in opts ? opts.endkey : false;
|
||
var key = 'key' in opts ? opts.key : false;
|
||
var keys = 'keys' in opts ? opts.keys : false;
|
||
var skip = opts.skip || 0;
|
||
var limit = typeof opts.limit === 'number' ? opts.limit : -1;
|
||
var inclusiveEnd = opts.inclusive_end !== false;
|
||
|
||
var keyRange ;
|
||
var keyRangeError;
|
||
if (!keys) {
|
||
keyRange = createKeyRange(start, end, inclusiveEnd, key, opts.descending);
|
||
keyRangeError = keyRange && keyRange.error;
|
||
if (keyRangeError &&
|
||
!(keyRangeError.name === "DataError" && keyRangeError.code === 0)) {
|
||
// DataError with error code 0 indicates start is less than end, so
|
||
// can just do an empty query. Else need to throw
|
||
return callback(createError(IDB_ERROR,
|
||
keyRangeError.name, keyRangeError.message));
|
||
}
|
||
}
|
||
|
||
var stores = [DOC_STORE, BY_SEQ_STORE, META_STORE];
|
||
|
||
if (opts.attachments) {
|
||
stores.push(ATTACH_STORE);
|
||
}
|
||
var txnResult = openTransactionSafely(idb, stores, 'readonly');
|
||
if (txnResult.error) {
|
||
return callback(txnResult.error);
|
||
}
|
||
var txn = txnResult.txn;
|
||
txn.oncomplete = onTxnComplete;
|
||
txn.onabort = idbError(callback);
|
||
var docStore = txn.objectStore(DOC_STORE);
|
||
var seqStore = txn.objectStore(BY_SEQ_STORE);
|
||
var metaStore = txn.objectStore(META_STORE);
|
||
var docIdRevIndex = seqStore.index('_doc_id_rev');
|
||
var results = [];
|
||
var docCount;
|
||
var updateSeq;
|
||
|
||
metaStore.get(META_STORE).onsuccess = function (e) {
|
||
docCount = e.target.result.docCount;
|
||
};
|
||
|
||
/* istanbul ignore if */
|
||
if (opts.update_seq) {
|
||
getMaxUpdateSeq(seqStore, function (e) {
|
||
if (e.target.result && e.target.result.length > 0) {
|
||
updateSeq = e.target.result[0];
|
||
}
|
||
});
|
||
}
|
||
|
||
function getMaxUpdateSeq(objectStore, onSuccess) {
|
||
function onCursor(e) {
|
||
var cursor = e.target.result;
|
||
var maxKey = undefined;
|
||
if (cursor && cursor.key) {
|
||
maxKey = cursor.key;
|
||
}
|
||
return onSuccess({
|
||
target: {
|
||
result: [maxKey]
|
||
}
|
||
});
|
||
}
|
||
objectStore.openCursor(null, 'prev').onsuccess = onCursor;
|
||
}
|
||
|
||
// if the user specifies include_docs=true, then we don't
|
||
// want to block the main cursor while we're fetching the doc
|
||
function fetchDocAsynchronously(metadata, row, winningRev$$1) {
|
||
var key = metadata.id + "::" + winningRev$$1;
|
||
docIdRevIndex.get(key).onsuccess = function onGetDoc(e) {
|
||
row.doc = decodeDoc(e.target.result) || {};
|
||
if (opts.conflicts) {
|
||
var conflicts = collectConflicts(metadata);
|
||
if (conflicts.length) {
|
||
row.doc._conflicts = conflicts;
|
||
}
|
||
}
|
||
fetchAttachmentsIfNecessary(row.doc, opts, txn);
|
||
};
|
||
}
|
||
|
||
function allDocsInner(winningRev$$1, metadata) {
|
||
var row = {
|
||
id: metadata.id,
|
||
key: metadata.id,
|
||
value: {
|
||
rev: winningRev$$1
|
||
}
|
||
};
|
||
var deleted = metadata.deleted;
|
||
if (deleted) {
|
||
if (keys) {
|
||
results.push(row);
|
||
// deleted docs are okay with "keys" requests
|
||
row.value.deleted = true;
|
||
row.doc = null;
|
||
}
|
||
} else if (skip-- <= 0) {
|
||
results.push(row);
|
||
if (opts.include_docs) {
|
||
fetchDocAsynchronously(metadata, row, winningRev$$1);
|
||
}
|
||
}
|
||
}
|
||
|
||
function processBatch(batchValues) {
|
||
for (var i = 0, len = batchValues.length; i < len; i++) {
|
||
if (results.length === limit) {
|
||
break;
|
||
}
|
||
var batchValue = batchValues[i];
|
||
if (batchValue.error && keys) {
|
||
// key was not found with "keys" requests
|
||
results.push(batchValue);
|
||
continue;
|
||
}
|
||
var metadata = decodeMetadata(batchValue);
|
||
var winningRev$$1 = metadata.winningRev;
|
||
allDocsInner(winningRev$$1, metadata);
|
||
}
|
||
}
|
||
|
||
function onBatch(batchKeys, batchValues, cursor) {
|
||
if (!cursor) {
|
||
return;
|
||
}
|
||
processBatch(batchValues);
|
||
if (results.length < limit) {
|
||
cursor.continue();
|
||
}
|
||
}
|
||
|
||
function onGetAll(e) {
|
||
var values = e.target.result;
|
||
if (opts.descending) {
|
||
values = values.reverse();
|
||
}
|
||
processBatch(values);
|
||
}
|
||
|
||
function onResultsReady() {
|
||
var returnVal = {
|
||
total_rows: docCount,
|
||
offset: opts.skip,
|
||
rows: results
|
||
};
|
||
|
||
/* istanbul ignore if */
|
||
if (opts.update_seq && updateSeq !== undefined) {
|
||
returnVal.update_seq = updateSeq;
|
||
}
|
||
callback(null, returnVal);
|
||
}
|
||
|
||
function onTxnComplete() {
|
||
if (opts.attachments) {
|
||
postProcessAttachments(results, opts.binary).then(onResultsReady);
|
||
} else {
|
||
onResultsReady();
|
||
}
|
||
}
|
||
|
||
// don't bother doing any requests if start > end or limit === 0
|
||
if (keyRangeError || limit === 0) {
|
||
return;
|
||
}
|
||
if (keys) {
|
||
return allDocsKeys(opts.keys, docStore, onBatch);
|
||
}
|
||
if (limit === -1) { // just fetch everything
|
||
return getAll(docStore, keyRange, onGetAll);
|
||
}
|
||
// else do a cursor
|
||
// choose a batch size based on the skip, since we'll need to skip that many
|
||
runBatchedCursor(docStore, keyRange, opts.descending, limit + skip, onBatch);
|
||
}
|
||
|
||
//
|
||
// Blobs are not supported in all versions of IndexedDB, notably
|
||
// Chrome <37 and Android <5. In those versions, storing a blob will throw.
|
||
//
|
||
// Various other blob bugs exist in Chrome v37-42 (inclusive).
|
||
// Detecting them is expensive and confusing to users, and Chrome 37-42
|
||
// is at very low usage worldwide, so we do a hacky userAgent check instead.
|
||
//
|
||
// content-type bug: https://code.google.com/p/chromium/issues/detail?id=408120
|
||
// 404 bug: https://code.google.com/p/chromium/issues/detail?id=447916
|
||
// FileReader bug: https://code.google.com/p/chromium/issues/detail?id=447836
|
||
//
|
||
function checkBlobSupport(txn) {
|
||
return new Promise(function (resolve) {
|
||
var blob$$1 = createBlob(['']);
|
||
var req = txn.objectStore(DETECT_BLOB_SUPPORT_STORE).put(blob$$1, 'key');
|
||
|
||
req.onsuccess = function () {
|
||
var matchedChrome = navigator.userAgent.match(/Chrome\/(\d+)/);
|
||
var matchedEdge = navigator.userAgent.match(/Edge\//);
|
||
// MS Edge pretends to be Chrome 42:
|
||
// https://msdn.microsoft.com/en-us/library/hh869301%28v=vs.85%29.aspx
|
||
resolve(matchedEdge || !matchedChrome ||
|
||
parseInt(matchedChrome[1], 10) >= 43);
|
||
};
|
||
|
||
req.onerror = txn.onabort = function (e) {
|
||
// If the transaction aborts now its due to not being able to
|
||
// write to the database, likely due to the disk being full
|
||
e.preventDefault();
|
||
e.stopPropagation();
|
||
resolve(false);
|
||
};
|
||
}).catch(function () {
|
||
return false; // error, so assume unsupported
|
||
});
|
||
}
|
||
|
||
function countDocs(txn, cb) {
|
||
var index = txn.objectStore(DOC_STORE).index('deletedOrLocal');
|
||
index.count(IDBKeyRange.only('0')).onsuccess = function (e) {
|
||
cb(e.target.result);
|
||
};
|
||
}
|
||
|
||
// This task queue ensures that IDB open calls are done in their own tick
|
||
|
||
var running = false;
|
||
var queue = [];
|
||
|
||
function tryCode(fun, err, res, PouchDB) {
|
||
try {
|
||
fun(err, res);
|
||
} catch (err) {
|
||
// Shouldn't happen, but in some odd cases
|
||
// IndexedDB implementations might throw a sync
|
||
// error, in which case this will at least log it.
|
||
PouchDB.emit('error', err);
|
||
}
|
||
}
|
||
|
||
function applyNext() {
|
||
if (running || !queue.length) {
|
||
return;
|
||
}
|
||
running = true;
|
||
queue.shift()();
|
||
}
|
||
|
||
function enqueueTask(action, callback, PouchDB) {
|
||
queue.push(function runAction() {
|
||
action(function runCallback(err, res) {
|
||
tryCode(callback, err, res, PouchDB);
|
||
running = false;
|
||
immediate(function runNext() {
|
||
applyNext(PouchDB);
|
||
});
|
||
});
|
||
});
|
||
applyNext();
|
||
}
|
||
|
||
function changes(opts, api, dbName, idb) {
|
||
opts = clone(opts);
|
||
|
||
if (opts.continuous) {
|
||
var id = dbName + ':' + uuid();
|
||
changesHandler.addListener(dbName, id, api, opts);
|
||
changesHandler.notify(dbName);
|
||
return {
|
||
cancel: function () {
|
||
changesHandler.removeListener(dbName, id);
|
||
}
|
||
};
|
||
}
|
||
|
||
var docIds = opts.doc_ids && new ExportedSet(opts.doc_ids);
|
||
|
||
opts.since = opts.since || 0;
|
||
var lastSeq = opts.since;
|
||
|
||
var limit = 'limit' in opts ? opts.limit : -1;
|
||
if (limit === 0) {
|
||
limit = 1; // per CouchDB _changes spec
|
||
}
|
||
|
||
var results = [];
|
||
var numResults = 0;
|
||
var filter = filterChange(opts);
|
||
var docIdsToMetadata = new ExportedMap();
|
||
|
||
var txn;
|
||
var bySeqStore;
|
||
var docStore;
|
||
var docIdRevIndex;
|
||
|
||
function onBatch(batchKeys, batchValues, cursor) {
|
||
if (!cursor || !batchKeys.length) { // done
|
||
return;
|
||
}
|
||
|
||
var winningDocs = new Array(batchKeys.length);
|
||
var metadatas = new Array(batchKeys.length);
|
||
|
||
function processMetadataAndWinningDoc(metadata, winningDoc) {
|
||
var change = opts.processChange(winningDoc, metadata, opts);
|
||
lastSeq = change.seq = metadata.seq;
|
||
|
||
var filtered = filter(change);
|
||
if (typeof filtered === 'object') { // anything but true/false indicates error
|
||
return Promise.reject(filtered);
|
||
}
|
||
|
||
if (!filtered) {
|
||
return Promise.resolve();
|
||
}
|
||
numResults++;
|
||
if (opts.return_docs) {
|
||
results.push(change);
|
||
}
|
||
// process the attachment immediately
|
||
// for the benefit of live listeners
|
||
if (opts.attachments && opts.include_docs) {
|
||
return new Promise(function (resolve) {
|
||
fetchAttachmentsIfNecessary(winningDoc, opts, txn, function () {
|
||
postProcessAttachments([change], opts.binary).then(function () {
|
||
resolve(change);
|
||
});
|
||
});
|
||
});
|
||
} else {
|
||
return Promise.resolve(change);
|
||
}
|
||
}
|
||
|
||
function onBatchDone() {
|
||
var promises = [];
|
||
for (var i = 0, len = winningDocs.length; i < len; i++) {
|
||
if (numResults === limit) {
|
||
break;
|
||
}
|
||
var winningDoc = winningDocs[i];
|
||
if (!winningDoc) {
|
||
continue;
|
||
}
|
||
var metadata = metadatas[i];
|
||
promises.push(processMetadataAndWinningDoc(metadata, winningDoc));
|
||
}
|
||
|
||
Promise.all(promises).then(function (changes) {
|
||
for (var i = 0, len = changes.length; i < len; i++) {
|
||
if (changes[i]) {
|
||
opts.onChange(changes[i]);
|
||
}
|
||
}
|
||
}).catch(opts.complete);
|
||
|
||
if (numResults !== limit) {
|
||
cursor.continue();
|
||
}
|
||
}
|
||
|
||
// Fetch all metadatas/winningdocs from this batch in parallel, then process
|
||
// them all only once all data has been collected. This is done in parallel
|
||
// because it's faster than doing it one-at-a-time.
|
||
var numDone = 0;
|
||
batchValues.forEach(function (value, i) {
|
||
var doc = decodeDoc(value);
|
||
var seq = batchKeys[i];
|
||
fetchWinningDocAndMetadata(doc, seq, function (metadata, winningDoc) {
|
||
metadatas[i] = metadata;
|
||
winningDocs[i] = winningDoc;
|
||
if (++numDone === batchKeys.length) {
|
||
onBatchDone();
|
||
}
|
||
});
|
||
});
|
||
}
|
||
|
||
function onGetMetadata(doc, seq, metadata, cb) {
|
||
if (metadata.seq !== seq) {
|
||
// some other seq is later
|
||
return cb();
|
||
}
|
||
|
||
if (metadata.winningRev === doc._rev) {
|
||
// this is the winning doc
|
||
return cb(metadata, doc);
|
||
}
|
||
|
||
// fetch winning doc in separate request
|
||
var docIdRev = doc._id + '::' + metadata.winningRev;
|
||
var req = docIdRevIndex.get(docIdRev);
|
||
req.onsuccess = function (e) {
|
||
cb(metadata, decodeDoc(e.target.result));
|
||
};
|
||
}
|
||
|
||
function fetchWinningDocAndMetadata(doc, seq, cb) {
|
||
if (docIds && !docIds.has(doc._id)) {
|
||
return cb();
|
||
}
|
||
|
||
var metadata = docIdsToMetadata.get(doc._id);
|
||
if (metadata) { // cached
|
||
return onGetMetadata(doc, seq, metadata, cb);
|
||
}
|
||
// metadata not cached, have to go fetch it
|
||
docStore.get(doc._id).onsuccess = function (e) {
|
||
metadata = decodeMetadata(e.target.result);
|
||
docIdsToMetadata.set(doc._id, metadata);
|
||
onGetMetadata(doc, seq, metadata, cb);
|
||
};
|
||
}
|
||
|
||
function finish() {
|
||
opts.complete(null, {
|
||
results: results,
|
||
last_seq: lastSeq
|
||
});
|
||
}
|
||
|
||
function onTxnComplete() {
|
||
if (!opts.continuous && opts.attachments) {
|
||
// cannot guarantee that postProcessing was already done,
|
||
// so do it again
|
||
postProcessAttachments(results).then(finish);
|
||
} else {
|
||
finish();
|
||
}
|
||
}
|
||
|
||
var objectStores = [DOC_STORE, BY_SEQ_STORE];
|
||
if (opts.attachments) {
|
||
objectStores.push(ATTACH_STORE);
|
||
}
|
||
var txnResult = openTransactionSafely(idb, objectStores, 'readonly');
|
||
if (txnResult.error) {
|
||
return opts.complete(txnResult.error);
|
||
}
|
||
txn = txnResult.txn;
|
||
txn.onabort = idbError(opts.complete);
|
||
txn.oncomplete = onTxnComplete;
|
||
|
||
bySeqStore = txn.objectStore(BY_SEQ_STORE);
|
||
docStore = txn.objectStore(DOC_STORE);
|
||
docIdRevIndex = bySeqStore.index('_doc_id_rev');
|
||
|
||
var keyRange = (opts.since && !opts.descending) ?
|
||
IDBKeyRange.lowerBound(opts.since, true) : null;
|
||
|
||
runBatchedCursor(bySeqStore, keyRange, opts.descending, limit, onBatch);
|
||
}
|
||
|
||
var cachedDBs = new ExportedMap();
|
||
var blobSupportPromise;
|
||
var openReqList = new ExportedMap();
|
||
|
||
function IdbPouch(opts, callback) {
|
||
var api = this;
|
||
|
||
enqueueTask(function (thisCallback) {
|
||
init(api, opts, thisCallback);
|
||
}, callback, api.constructor);
|
||
}
|
||
|
||
function init(api, opts, callback) {
|
||
|
||
var dbName = opts.name;
|
||
|
||
var idb = null;
|
||
var idbGlobalFailureError = null;
|
||
api._meta = null;
|
||
|
||
function enrichCallbackError(callback) {
|
||
return function (error, result) {
|
||
if (error && error instanceof Error && !error.reason) {
|
||
if (idbGlobalFailureError) {
|
||
error.reason = idbGlobalFailureError;
|
||
}
|
||
}
|
||
|
||
callback(error, result);
|
||
};
|
||
}
|
||
|
||
// called when creating a fresh new database
|
||
function createSchema(db) {
|
||
var docStore = db.createObjectStore(DOC_STORE, {keyPath : 'id'});
|
||
db.createObjectStore(BY_SEQ_STORE, {autoIncrement: true})
|
||
.createIndex('_doc_id_rev', '_doc_id_rev', {unique: true});
|
||
db.createObjectStore(ATTACH_STORE, {keyPath: 'digest'});
|
||
db.createObjectStore(META_STORE, {keyPath: 'id', autoIncrement: false});
|
||
db.createObjectStore(DETECT_BLOB_SUPPORT_STORE);
|
||
|
||
// added in v2
|
||
docStore.createIndex('deletedOrLocal', 'deletedOrLocal', {unique : false});
|
||
|
||
// added in v3
|
||
db.createObjectStore(LOCAL_STORE, {keyPath: '_id'});
|
||
|
||
// added in v4
|
||
var attAndSeqStore = db.createObjectStore(ATTACH_AND_SEQ_STORE,
|
||
{autoIncrement: true});
|
||
attAndSeqStore.createIndex('seq', 'seq');
|
||
attAndSeqStore.createIndex('digestSeq', 'digestSeq', {unique: true});
|
||
}
|
||
|
||
// migration to version 2
|
||
// unfortunately "deletedOrLocal" is a misnomer now that we no longer
|
||
// store local docs in the main doc-store, but whaddyagonnado
|
||
function addDeletedOrLocalIndex(txn, callback) {
|
||
var docStore = txn.objectStore(DOC_STORE);
|
||
docStore.createIndex('deletedOrLocal', 'deletedOrLocal', {unique : false});
|
||
|
||
docStore.openCursor().onsuccess = function (event) {
|
||
var cursor = event.target.result;
|
||
if (cursor) {
|
||
var metadata = cursor.value;
|
||
var deleted = isDeleted(metadata);
|
||
metadata.deletedOrLocal = deleted ? "1" : "0";
|
||
docStore.put(metadata);
|
||
cursor.continue();
|
||
} else {
|
||
callback();
|
||
}
|
||
};
|
||
}
|
||
|
||
// migration to version 3 (part 1)
|
||
function createLocalStoreSchema(db) {
|
||
db.createObjectStore(LOCAL_STORE, {keyPath: '_id'})
|
||
.createIndex('_doc_id_rev', '_doc_id_rev', {unique: true});
|
||
}
|
||
|
||
// migration to version 3 (part 2)
|
||
function migrateLocalStore(txn, cb) {
|
||
var localStore = txn.objectStore(LOCAL_STORE);
|
||
var docStore = txn.objectStore(DOC_STORE);
|
||
var seqStore = txn.objectStore(BY_SEQ_STORE);
|
||
|
||
var cursor = docStore.openCursor();
|
||
cursor.onsuccess = function (event) {
|
||
var cursor = event.target.result;
|
||
if (cursor) {
|
||
var metadata = cursor.value;
|
||
var docId = metadata.id;
|
||
var local = isLocalId(docId);
|
||
var rev = winningRev(metadata);
|
||
if (local) {
|
||
var docIdRev = docId + "::" + rev;
|
||
// remove all seq entries
|
||
// associated with this docId
|
||
var start = docId + "::";
|
||
var end = docId + "::~";
|
||
var index = seqStore.index('_doc_id_rev');
|
||
var range = IDBKeyRange.bound(start, end, false, false);
|
||
var seqCursor = index.openCursor(range);
|
||
seqCursor.onsuccess = function (e) {
|
||
seqCursor = e.target.result;
|
||
if (!seqCursor) {
|
||
// done
|
||
docStore.delete(cursor.primaryKey);
|
||
cursor.continue();
|
||
} else {
|
||
var data = seqCursor.value;
|
||
if (data._doc_id_rev === docIdRev) {
|
||
localStore.put(data);
|
||
}
|
||
seqStore.delete(seqCursor.primaryKey);
|
||
seqCursor.continue();
|
||
}
|
||
};
|
||
} else {
|
||
cursor.continue();
|
||
}
|
||
} else if (cb) {
|
||
cb();
|
||
}
|
||
};
|
||
}
|
||
|
||
// migration to version 4 (part 1)
|
||
function addAttachAndSeqStore(db) {
|
||
var attAndSeqStore = db.createObjectStore(ATTACH_AND_SEQ_STORE,
|
||
{autoIncrement: true});
|
||
attAndSeqStore.createIndex('seq', 'seq');
|
||
attAndSeqStore.createIndex('digestSeq', 'digestSeq', {unique: true});
|
||
}
|
||
|
||
// migration to version 4 (part 2)
|
||
function migrateAttsAndSeqs(txn, callback) {
|
||
var seqStore = txn.objectStore(BY_SEQ_STORE);
|
||
var attStore = txn.objectStore(ATTACH_STORE);
|
||
var attAndSeqStore = txn.objectStore(ATTACH_AND_SEQ_STORE);
|
||
|
||
// need to actually populate the table. this is the expensive part,
|
||
// so as an optimization, check first that this database even
|
||
// contains attachments
|
||
var req = attStore.count();
|
||
req.onsuccess = function (e) {
|
||
var count = e.target.result;
|
||
if (!count) {
|
||
return callback(); // done
|
||
}
|
||
|
||
seqStore.openCursor().onsuccess = function (e) {
|
||
var cursor = e.target.result;
|
||
if (!cursor) {
|
||
return callback(); // done
|
||
}
|
||
var doc = cursor.value;
|
||
var seq = cursor.primaryKey;
|
||
var atts = Object.keys(doc._attachments || {});
|
||
var digestMap = {};
|
||
for (var j = 0; j < atts.length; j++) {
|
||
var att = doc._attachments[atts[j]];
|
||
digestMap[att.digest] = true; // uniq digests, just in case
|
||
}
|
||
var digests = Object.keys(digestMap);
|
||
for (j = 0; j < digests.length; j++) {
|
||
var digest = digests[j];
|
||
attAndSeqStore.put({
|
||
seq: seq,
|
||
digestSeq: digest + '::' + seq
|
||
});
|
||
}
|
||
cursor.continue();
|
||
};
|
||
};
|
||
}
|
||
|
||
// migration to version 5
|
||
// Instead of relying on on-the-fly migration of metadata,
|
||
// this brings the doc-store to its modern form:
|
||
// - metadata.winningrev
|
||
// - metadata.seq
|
||
// - stringify the metadata when storing it
|
||
function migrateMetadata(txn) {
|
||
|
||
function decodeMetadataCompat(storedObject) {
|
||
if (!storedObject.data) {
|
||
// old format, when we didn't store it stringified
|
||
storedObject.deleted = storedObject.deletedOrLocal === '1';
|
||
return storedObject;
|
||
}
|
||
return decodeMetadata(storedObject);
|
||
}
|
||
|
||
// ensure that every metadata has a winningRev and seq,
|
||
// which was previously created on-the-fly but better to migrate
|
||
var bySeqStore = txn.objectStore(BY_SEQ_STORE);
|
||
var docStore = txn.objectStore(DOC_STORE);
|
||
var cursor = docStore.openCursor();
|
||
cursor.onsuccess = function (e) {
|
||
var cursor = e.target.result;
|
||
if (!cursor) {
|
||
return; // done
|
||
}
|
||
var metadata = decodeMetadataCompat(cursor.value);
|
||
|
||
metadata.winningRev = metadata.winningRev ||
|
||
winningRev(metadata);
|
||
|
||
function fetchMetadataSeq() {
|
||
// metadata.seq was added post-3.2.0, so if it's missing,
|
||
// we need to fetch it manually
|
||
var start = metadata.id + '::';
|
||
var end = metadata.id + '::\uffff';
|
||
var req = bySeqStore.index('_doc_id_rev').openCursor(
|
||
IDBKeyRange.bound(start, end));
|
||
|
||
var metadataSeq = 0;
|
||
req.onsuccess = function (e) {
|
||
var cursor = e.target.result;
|
||
if (!cursor) {
|
||
metadata.seq = metadataSeq;
|
||
return onGetMetadataSeq();
|
||
}
|
||
var seq = cursor.primaryKey;
|
||
if (seq > metadataSeq) {
|
||
metadataSeq = seq;
|
||
}
|
||
cursor.continue();
|
||
};
|
||
}
|
||
|
||
function onGetMetadataSeq() {
|
||
var metadataToStore = encodeMetadata(metadata,
|
||
metadata.winningRev, metadata.deleted);
|
||
|
||
var req = docStore.put(metadataToStore);
|
||
req.onsuccess = function () {
|
||
cursor.continue();
|
||
};
|
||
}
|
||
|
||
if (metadata.seq) {
|
||
return onGetMetadataSeq();
|
||
}
|
||
|
||
fetchMetadataSeq();
|
||
};
|
||
|
||
}
|
||
|
||
api._remote = false;
|
||
api.type = function () {
|
||
return 'idb';
|
||
};
|
||
|
||
api._id = toPromise(function (callback) {
|
||
callback(null, api._meta.instanceId);
|
||
});
|
||
|
||
api._bulkDocs = function idb_bulkDocs(req, reqOpts, callback) {
|
||
idbBulkDocs(opts, req, reqOpts, api, idb, enrichCallbackError(callback));
|
||
};
|
||
|
||
// First we look up the metadata in the ids database, then we fetch the
|
||
// current revision(s) from the by sequence store
|
||
api._get = function idb_get(id, opts, callback) {
|
||
var doc;
|
||
var metadata;
|
||
var err;
|
||
var txn = opts.ctx;
|
||
if (!txn) {
|
||
var txnResult = openTransactionSafely(idb,
|
||
[DOC_STORE, BY_SEQ_STORE, ATTACH_STORE], 'readonly');
|
||
if (txnResult.error) {
|
||
return callback(txnResult.error);
|
||
}
|
||
txn = txnResult.txn;
|
||
}
|
||
|
||
function finish() {
|
||
callback(err, {doc: doc, metadata: metadata, ctx: txn});
|
||
}
|
||
|
||
txn.objectStore(DOC_STORE).get(id).onsuccess = function (e) {
|
||
metadata = decodeMetadata(e.target.result);
|
||
// we can determine the result here if:
|
||
// 1. there is no such document
|
||
// 2. the document is deleted and we don't ask about specific rev
|
||
// When we ask with opts.rev we expect the answer to be either
|
||
// doc (possibly with _deleted=true) or missing error
|
||
if (!metadata) {
|
||
err = createError(MISSING_DOC, 'missing');
|
||
return finish();
|
||
}
|
||
|
||
var rev;
|
||
if (!opts.rev) {
|
||
rev = metadata.winningRev;
|
||
var deleted = isDeleted(metadata);
|
||
if (deleted) {
|
||
err = createError(MISSING_DOC, "deleted");
|
||
return finish();
|
||
}
|
||
} else {
|
||
rev = opts.latest ? latest(opts.rev, metadata) : opts.rev;
|
||
}
|
||
|
||
var objectStore = txn.objectStore(BY_SEQ_STORE);
|
||
var key = metadata.id + '::' + rev;
|
||
|
||
objectStore.index('_doc_id_rev').get(key).onsuccess = function (e) {
|
||
doc = e.target.result;
|
||
if (doc) {
|
||
doc = decodeDoc(doc);
|
||
}
|
||
if (!doc) {
|
||
err = createError(MISSING_DOC, 'missing');
|
||
return finish();
|
||
}
|
||
finish();
|
||
};
|
||
};
|
||
};
|
||
|
||
api._getAttachment = function (docId, attachId, attachment, opts, callback) {
|
||
var txn;
|
||
if (opts.ctx) {
|
||
txn = opts.ctx;
|
||
} else {
|
||
var txnResult = openTransactionSafely(idb,
|
||
[DOC_STORE, BY_SEQ_STORE, ATTACH_STORE], 'readonly');
|
||
if (txnResult.error) {
|
||
return callback(txnResult.error);
|
||
}
|
||
txn = txnResult.txn;
|
||
}
|
||
var digest = attachment.digest;
|
||
var type = attachment.content_type;
|
||
|
||
txn.objectStore(ATTACH_STORE).get(digest).onsuccess = function (e) {
|
||
var body = e.target.result.body;
|
||
readBlobData(body, type, opts.binary, function (blobData) {
|
||
callback(null, blobData);
|
||
});
|
||
};
|
||
};
|
||
|
||
api._info = function idb_info(callback) {
|
||
var updateSeq;
|
||
var docCount;
|
||
|
||
var txnResult = openTransactionSafely(idb, [META_STORE, BY_SEQ_STORE], 'readonly');
|
||
if (txnResult.error) {
|
||
return callback(txnResult.error);
|
||
}
|
||
var txn = txnResult.txn;
|
||
txn.objectStore(META_STORE).get(META_STORE).onsuccess = function (e) {
|
||
docCount = e.target.result.docCount;
|
||
};
|
||
txn.objectStore(BY_SEQ_STORE).openCursor(null, 'prev').onsuccess = function (e) {
|
||
var cursor = e.target.result;
|
||
updateSeq = cursor ? cursor.key : 0;
|
||
};
|
||
|
||
txn.oncomplete = function () {
|
||
callback(null, {
|
||
doc_count: docCount,
|
||
update_seq: updateSeq,
|
||
// for debugging
|
||
idb_attachment_format: (api._meta.blobSupport ? 'binary' : 'base64')
|
||
});
|
||
};
|
||
};
|
||
|
||
api._allDocs = function idb_allDocs(opts, callback) {
|
||
idbAllDocs(opts, idb, enrichCallbackError(callback));
|
||
};
|
||
|
||
api._changes = function idbChanges(opts) {
|
||
return changes(opts, api, dbName, idb);
|
||
};
|
||
|
||
api._close = function (callback) {
|
||
// https://developer.mozilla.org/en-US/docs/IndexedDB/IDBDatabase#close
|
||
// "Returns immediately and closes the connection in a separate thread..."
|
||
idb.close();
|
||
cachedDBs.delete(dbName);
|
||
callback();
|
||
};
|
||
|
||
api._getRevisionTree = function (docId, callback) {
|
||
var txnResult = openTransactionSafely(idb, [DOC_STORE], 'readonly');
|
||
if (txnResult.error) {
|
||
return callback(txnResult.error);
|
||
}
|
||
var txn = txnResult.txn;
|
||
var req = txn.objectStore(DOC_STORE).get(docId);
|
||
req.onsuccess = function (event) {
|
||
var doc = decodeMetadata(event.target.result);
|
||
if (!doc) {
|
||
callback(createError(MISSING_DOC));
|
||
} else {
|
||
callback(null, doc.rev_tree);
|
||
}
|
||
};
|
||
};
|
||
|
||
// This function removes revisions of document docId
|
||
// which are listed in revs and sets this document
|
||
// revision to to rev_tree
|
||
api._doCompaction = function (docId, revs, callback) {
|
||
var stores = [
|
||
DOC_STORE,
|
||
BY_SEQ_STORE,
|
||
ATTACH_STORE,
|
||
ATTACH_AND_SEQ_STORE
|
||
];
|
||
var txnResult = openTransactionSafely(idb, stores, 'readwrite');
|
||
if (txnResult.error) {
|
||
return callback(txnResult.error);
|
||
}
|
||
var txn = txnResult.txn;
|
||
|
||
var docStore = txn.objectStore(DOC_STORE);
|
||
|
||
docStore.get(docId).onsuccess = function (event) {
|
||
var metadata = decodeMetadata(event.target.result);
|
||
traverseRevTree(metadata.rev_tree, function (isLeaf, pos,
|
||
revHash, ctx, opts) {
|
||
var rev = pos + '-' + revHash;
|
||
if (revs.indexOf(rev) !== -1) {
|
||
opts.status = 'missing';
|
||
}
|
||
});
|
||
compactRevs(revs, docId, txn);
|
||
var winningRev$$1 = metadata.winningRev;
|
||
var deleted = metadata.deleted;
|
||
txn.objectStore(DOC_STORE).put(
|
||
encodeMetadata(metadata, winningRev$$1, deleted));
|
||
};
|
||
txn.onabort = idbError(callback);
|
||
txn.oncomplete = function () {
|
||
callback();
|
||
};
|
||
};
|
||
|
||
|
||
api._getLocal = function (id, callback) {
|
||
var txnResult = openTransactionSafely(idb, [LOCAL_STORE], 'readonly');
|
||
if (txnResult.error) {
|
||
return callback(txnResult.error);
|
||
}
|
||
var tx = txnResult.txn;
|
||
var req = tx.objectStore(LOCAL_STORE).get(id);
|
||
|
||
req.onerror = idbError(callback);
|
||
req.onsuccess = function (e) {
|
||
var doc = e.target.result;
|
||
if (!doc) {
|
||
callback(createError(MISSING_DOC));
|
||
} else {
|
||
delete doc['_doc_id_rev']; // for backwards compat
|
||
callback(null, doc);
|
||
}
|
||
};
|
||
};
|
||
|
||
api._putLocal = function (doc, opts, callback) {
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
delete doc._revisions; // ignore this, trust the rev
|
||
var oldRev = doc._rev;
|
||
var id = doc._id;
|
||
if (!oldRev) {
|
||
doc._rev = '0-1';
|
||
} else {
|
||
doc._rev = '0-' + (parseInt(oldRev.split('-')[1], 10) + 1);
|
||
}
|
||
|
||
var tx = opts.ctx;
|
||
var ret;
|
||
if (!tx) {
|
||
var txnResult = openTransactionSafely(idb, [LOCAL_STORE], 'readwrite');
|
||
if (txnResult.error) {
|
||
return callback(txnResult.error);
|
||
}
|
||
tx = txnResult.txn;
|
||
tx.onerror = idbError(callback);
|
||
tx.oncomplete = function () {
|
||
if (ret) {
|
||
callback(null, ret);
|
||
}
|
||
};
|
||
}
|
||
|
||
var oStore = tx.objectStore(LOCAL_STORE);
|
||
var req;
|
||
if (oldRev) {
|
||
req = oStore.get(id);
|
||
req.onsuccess = function (e) {
|
||
var oldDoc = e.target.result;
|
||
if (!oldDoc || oldDoc._rev !== oldRev) {
|
||
callback(createError(REV_CONFLICT));
|
||
} else { // update
|
||
var req = oStore.put(doc);
|
||
req.onsuccess = function () {
|
||
ret = {ok: true, id: doc._id, rev: doc._rev};
|
||
if (opts.ctx) { // return immediately
|
||
callback(null, ret);
|
||
}
|
||
};
|
||
}
|
||
};
|
||
} else { // new doc
|
||
req = oStore.add(doc);
|
||
req.onerror = function (e) {
|
||
// constraint error, already exists
|
||
callback(createError(REV_CONFLICT));
|
||
e.preventDefault(); // avoid transaction abort
|
||
e.stopPropagation(); // avoid transaction onerror
|
||
};
|
||
req.onsuccess = function () {
|
||
ret = {ok: true, id: doc._id, rev: doc._rev};
|
||
if (opts.ctx) { // return immediately
|
||
callback(null, ret);
|
||
}
|
||
};
|
||
}
|
||
};
|
||
|
||
api._removeLocal = function (doc, opts, callback) {
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
var tx = opts.ctx;
|
||
if (!tx) {
|
||
var txnResult = openTransactionSafely(idb, [LOCAL_STORE], 'readwrite');
|
||
if (txnResult.error) {
|
||
return callback(txnResult.error);
|
||
}
|
||
tx = txnResult.txn;
|
||
tx.oncomplete = function () {
|
||
if (ret) {
|
||
callback(null, ret);
|
||
}
|
||
};
|
||
}
|
||
var ret;
|
||
var id = doc._id;
|
||
var oStore = tx.objectStore(LOCAL_STORE);
|
||
var req = oStore.get(id);
|
||
|
||
req.onerror = idbError(callback);
|
||
req.onsuccess = function (e) {
|
||
var oldDoc = e.target.result;
|
||
if (!oldDoc || oldDoc._rev !== doc._rev) {
|
||
callback(createError(MISSING_DOC));
|
||
} else {
|
||
oStore.delete(id);
|
||
ret = {ok: true, id: id, rev: '0-0'};
|
||
if (opts.ctx) { // return immediately
|
||
callback(null, ret);
|
||
}
|
||
}
|
||
};
|
||
};
|
||
|
||
api._destroy = function (opts, callback) {
|
||
changesHandler.removeAllListeners(dbName);
|
||
|
||
//Close open request for "dbName" database to fix ie delay.
|
||
var openReq = openReqList.get(dbName);
|
||
if (openReq && openReq.result) {
|
||
openReq.result.close();
|
||
cachedDBs.delete(dbName);
|
||
}
|
||
var req = indexedDB.deleteDatabase(dbName);
|
||
|
||
req.onsuccess = function () {
|
||
//Remove open request from the list.
|
||
openReqList.delete(dbName);
|
||
if (hasLocalStorage() && (dbName in localStorage)) {
|
||
delete localStorage[dbName];
|
||
}
|
||
callback(null, { 'ok': true });
|
||
};
|
||
|
||
req.onerror = idbError(callback);
|
||
};
|
||
|
||
var cached = cachedDBs.get(dbName);
|
||
|
||
if (cached) {
|
||
idb = cached.idb;
|
||
api._meta = cached.global;
|
||
return immediate(function () {
|
||
callback(null, api);
|
||
});
|
||
}
|
||
|
||
var req = indexedDB.open(dbName, ADAPTER_VERSION);
|
||
openReqList.set(dbName, req);
|
||
|
||
req.onupgradeneeded = function (e) {
|
||
var db = e.target.result;
|
||
if (e.oldVersion < 1) {
|
||
return createSchema(db); // new db, initial schema
|
||
}
|
||
// do migrations
|
||
|
||
var txn = e.currentTarget.transaction;
|
||
// these migrations have to be done in this function, before
|
||
// control is returned to the event loop, because IndexedDB
|
||
|
||
if (e.oldVersion < 3) {
|
||
createLocalStoreSchema(db); // v2 -> v3
|
||
}
|
||
if (e.oldVersion < 4) {
|
||
addAttachAndSeqStore(db); // v3 -> v4
|
||
}
|
||
|
||
var migrations = [
|
||
addDeletedOrLocalIndex, // v1 -> v2
|
||
migrateLocalStore, // v2 -> v3
|
||
migrateAttsAndSeqs, // v3 -> v4
|
||
migrateMetadata // v4 -> v5
|
||
];
|
||
|
||
var i = e.oldVersion;
|
||
|
||
function next() {
|
||
var migration = migrations[i - 1];
|
||
i++;
|
||
if (migration) {
|
||
migration(txn, next);
|
||
}
|
||
}
|
||
|
||
next();
|
||
};
|
||
|
||
req.onsuccess = function (e) {
|
||
|
||
idb = e.target.result;
|
||
|
||
idb.onversionchange = function () {
|
||
idb.close();
|
||
cachedDBs.delete(dbName);
|
||
};
|
||
|
||
idb.onabort = function (e) {
|
||
guardedConsole('error', 'Database has a global failure', e.target.error);
|
||
idbGlobalFailureError = e.target.error;
|
||
idb.close();
|
||
cachedDBs.delete(dbName);
|
||
};
|
||
|
||
// Do a few setup operations (in parallel as much as possible):
|
||
// 1. Fetch meta doc
|
||
// 2. Check blob support
|
||
// 3. Calculate docCount
|
||
// 4. Generate an instanceId if necessary
|
||
// 5. Store docCount and instanceId on meta doc
|
||
|
||
var txn = idb.transaction([
|
||
META_STORE,
|
||
DETECT_BLOB_SUPPORT_STORE,
|
||
DOC_STORE
|
||
], 'readwrite');
|
||
|
||
var storedMetaDoc = false;
|
||
var metaDoc;
|
||
var docCount;
|
||
var blobSupport;
|
||
var instanceId;
|
||
|
||
function completeSetup() {
|
||
if (typeof blobSupport === 'undefined' || !storedMetaDoc) {
|
||
return;
|
||
}
|
||
api._meta = {
|
||
name: dbName,
|
||
instanceId: instanceId,
|
||
blobSupport: blobSupport
|
||
};
|
||
|
||
cachedDBs.set(dbName, {
|
||
idb: idb,
|
||
global: api._meta
|
||
});
|
||
callback(null, api);
|
||
}
|
||
|
||
function storeMetaDocIfReady() {
|
||
if (typeof docCount === 'undefined' || typeof metaDoc === 'undefined') {
|
||
return;
|
||
}
|
||
var instanceKey = dbName + '_id';
|
||
if (instanceKey in metaDoc) {
|
||
instanceId = metaDoc[instanceKey];
|
||
} else {
|
||
metaDoc[instanceKey] = instanceId = uuid();
|
||
}
|
||
metaDoc.docCount = docCount;
|
||
txn.objectStore(META_STORE).put(metaDoc);
|
||
}
|
||
|
||
//
|
||
// fetch or generate the instanceId
|
||
//
|
||
txn.objectStore(META_STORE).get(META_STORE).onsuccess = function (e) {
|
||
metaDoc = e.target.result || { id: META_STORE };
|
||
storeMetaDocIfReady();
|
||
};
|
||
|
||
//
|
||
// countDocs
|
||
//
|
||
countDocs(txn, function (count) {
|
||
docCount = count;
|
||
storeMetaDocIfReady();
|
||
});
|
||
|
||
//
|
||
// check blob support
|
||
//
|
||
if (!blobSupportPromise) {
|
||
// make sure blob support is only checked once
|
||
blobSupportPromise = checkBlobSupport(txn);
|
||
}
|
||
|
||
blobSupportPromise.then(function (val) {
|
||
blobSupport = val;
|
||
completeSetup();
|
||
});
|
||
|
||
// only when the metadata put transaction has completed,
|
||
// consider the setup done
|
||
txn.oncomplete = function () {
|
||
storedMetaDoc = true;
|
||
completeSetup();
|
||
};
|
||
txn.onabort = idbError(callback);
|
||
};
|
||
|
||
req.onerror = function (e) {
|
||
var msg = e.target.error && e.target.error.message;
|
||
|
||
if (!msg) {
|
||
msg = 'Failed to open indexedDB, are you in private browsing mode?';
|
||
} else if (msg.indexOf("stored database is a higher version") !== -1) {
|
||
msg = new Error('This DB was created with the newer "indexeddb" adapter, but you are trying to open it with the older "idb" adapter');
|
||
}
|
||
|
||
guardedConsole('error', msg);
|
||
callback(createError(IDB_ERROR, msg));
|
||
};
|
||
}
|
||
|
||
IdbPouch.valid = function () {
|
||
// Following #7085 buggy idb versions (typically Safari < 10.1) are
|
||
// considered valid.
|
||
|
||
// On Firefox SecurityError is thrown while referencing indexedDB if cookies
|
||
// are not allowed. `typeof indexedDB` also triggers the error.
|
||
try {
|
||
// some outdated implementations of IDB that appear on Samsung
|
||
// and HTC Android devices <4.4 are missing IDBKeyRange
|
||
return typeof indexedDB !== 'undefined' && typeof IDBKeyRange !== 'undefined';
|
||
} catch (e) {
|
||
return false;
|
||
}
|
||
};
|
||
|
||
function IDBPouch (PouchDB) {
|
||
PouchDB.adapter('idb', IdbPouch, true);
|
||
}
|
||
|
||
// dead simple promise pool, inspired by https://github.com/timdp/es6-promise-pool
|
||
// but much smaller in code size. limits the number of concurrent promises that are executed
|
||
|
||
|
||
function pool(promiseFactories, limit) {
|
||
return new Promise(function (resolve, reject) {
|
||
var running = 0;
|
||
var current = 0;
|
||
var done = 0;
|
||
var len = promiseFactories.length;
|
||
var err;
|
||
|
||
function runNext() {
|
||
running++;
|
||
promiseFactories[current++]().then(onSuccess, onError);
|
||
}
|
||
|
||
function doNext() {
|
||
if (++done === len) {
|
||
/* istanbul ignore if */
|
||
if (err) {
|
||
reject(err);
|
||
} else {
|
||
resolve();
|
||
}
|
||
} else {
|
||
runNextBatch();
|
||
}
|
||
}
|
||
|
||
function onSuccess() {
|
||
running--;
|
||
doNext();
|
||
}
|
||
|
||
/* istanbul ignore next */
|
||
function onError(thisErr) {
|
||
running--;
|
||
err = err || thisErr;
|
||
doNext();
|
||
}
|
||
|
||
function runNextBatch() {
|
||
while (running < limit && current < len) {
|
||
runNext();
|
||
}
|
||
}
|
||
|
||
runNextBatch();
|
||
});
|
||
}
|
||
|
||
const CHANGES_BATCH_SIZE = 25;
|
||
const MAX_SIMULTANEOUS_REVS = 50;
|
||
const CHANGES_TIMEOUT_BUFFER = 5000;
|
||
const DEFAULT_HEARTBEAT = 10000;
|
||
|
||
let supportsBulkGetMap = {};
|
||
|
||
function readAttachmentsAsBlobOrBuffer(row) {
|
||
let doc = row.doc || row.ok;
|
||
let atts = doc && doc._attachments;
|
||
if (!atts) {
|
||
return;
|
||
}
|
||
Object.keys(atts).forEach(function (filename) {
|
||
let att = atts[filename];
|
||
att.data = b64ToBluffer(att.data, att.content_type);
|
||
});
|
||
}
|
||
|
||
function encodeDocId(id) {
|
||
if (/^_design/.test(id)) {
|
||
return '_design/' + encodeURIComponent(id.slice(8));
|
||
}
|
||
if (/^_local/.test(id)) {
|
||
return '_local/' + encodeURIComponent(id.slice(7));
|
||
}
|
||
return encodeURIComponent(id);
|
||
}
|
||
|
||
function preprocessAttachments$1(doc) {
|
||
if (!doc._attachments || !Object.keys(doc._attachments)) {
|
||
return Promise.resolve();
|
||
}
|
||
|
||
return Promise.all(Object.keys(doc._attachments).map(function (key) {
|
||
let attachment = doc._attachments[key];
|
||
if (attachment.data && typeof attachment.data !== 'string') {
|
||
return new Promise(function (resolve) {
|
||
blobToBase64(attachment.data, resolve);
|
||
}).then(function (b64) {
|
||
attachment.data = b64;
|
||
});
|
||
}
|
||
}));
|
||
}
|
||
|
||
function hasUrlPrefix(opts) {
|
||
if (!opts.prefix) {
|
||
return false;
|
||
}
|
||
let protocol = parseUri(opts.prefix).protocol;
|
||
return protocol === 'http' || protocol === 'https';
|
||
}
|
||
|
||
// Get all the information you possibly can about the URI given by name and
|
||
// return it as a suitable object.
|
||
function getHost(name, opts) {
|
||
// encode db name if opts.prefix is a url (#5574)
|
||
if (hasUrlPrefix(opts)) {
|
||
let dbName = opts.name.substr(opts.prefix.length);
|
||
// Ensure prefix has a trailing slash
|
||
let prefix = opts.prefix.replace(/\/?$/, '/');
|
||
name = prefix + encodeURIComponent(dbName);
|
||
}
|
||
|
||
let uri = parseUri(name);
|
||
if (uri.user || uri.password) {
|
||
uri.auth = {username: uri.user, password: uri.password};
|
||
}
|
||
|
||
// Split the path part of the URI into parts using '/' as the delimiter
|
||
// after removing any leading '/' and any trailing '/'
|
||
let parts = uri.path.replace(/(^\/|\/$)/g, '').split('/');
|
||
|
||
uri.db = parts.pop();
|
||
// Prevent double encoding of URI component
|
||
if (uri.db.indexOf('%') === -1) {
|
||
uri.db = encodeURIComponent(uri.db);
|
||
}
|
||
|
||
uri.path = parts.join('/');
|
||
|
||
return uri;
|
||
}
|
||
|
||
// Generate a URL with the host data given by opts and the given path
|
||
function genDBUrl(opts, path) {
|
||
return genUrl(opts, opts.db + '/' + path);
|
||
}
|
||
|
||
// Generate a URL with the host data given by opts and the given path
|
||
function genUrl(opts, path) {
|
||
// If the host already has a path, then we need to have a path delimiter
|
||
// Otherwise, the path delimiter is the empty string
|
||
let pathDel = !opts.path ? '' : '/';
|
||
|
||
// If the host already has a path, then we need to have a path delimiter
|
||
// Otherwise, the path delimiter is the empty string
|
||
return opts.protocol + '://' + opts.host +
|
||
(opts.port ? (':' + opts.port) : '') +
|
||
'/' + opts.path + pathDel + path;
|
||
}
|
||
|
||
function paramsToStr(params) {
|
||
return '?' + Object.keys(params).map(function (k) {
|
||
return k + '=' + encodeURIComponent(params[k]);
|
||
}).join('&');
|
||
}
|
||
|
||
function shouldCacheBust(opts) {
|
||
let ua = (typeof navigator !== 'undefined' && navigator.userAgent) ?
|
||
navigator.userAgent.toLowerCase() : '';
|
||
let isIE = ua.indexOf('msie') !== -1;
|
||
let isTrident = ua.indexOf('trident') !== -1;
|
||
let isEdge = ua.indexOf('edge') !== -1;
|
||
let isGET = !('method' in opts) || opts.method === 'GET';
|
||
return (isIE || isTrident || isEdge) && isGET;
|
||
}
|
||
|
||
// Implements the PouchDB API for dealing with CouchDB instances over HTTP
|
||
function HttpPouch(opts, callback) {
|
||
|
||
// The functions that will be publicly available for HttpPouch
|
||
let api = this;
|
||
|
||
let host = getHost(opts.name, opts);
|
||
let dbUrl = genDBUrl(host, '');
|
||
|
||
opts = clone(opts);
|
||
|
||
const ourFetch = async function (url, options) {
|
||
|
||
options = options || {};
|
||
options.headers = options.headers || new h();
|
||
|
||
options.credentials = 'include';
|
||
|
||
if (opts.auth || host.auth) {
|
||
let nAuth = opts.auth || host.auth;
|
||
let str = nAuth.username + ':' + nAuth.password;
|
||
let token = thisBtoa(unescape(encodeURIComponent(str)));
|
||
options.headers.set('Authorization', 'Basic ' + token);
|
||
}
|
||
|
||
let headers = opts.headers || {};
|
||
Object.keys(headers).forEach(function (key) {
|
||
options.headers.append(key, headers[key]);
|
||
});
|
||
|
||
/* istanbul ignore if */
|
||
if (shouldCacheBust(options)) {
|
||
url += (url.indexOf('?') === -1 ? '?' : '&') + '_nonce=' + Date.now();
|
||
}
|
||
|
||
let fetchFun = opts.fetch || f$1;
|
||
return await fetchFun(url, options);
|
||
};
|
||
|
||
function adapterFun$$1(name, fun) {
|
||
return adapterFun(name, function (...args) {
|
||
setup().then(function () {
|
||
return fun.apply(this, args);
|
||
}).catch(function (e) {
|
||
let callback = args.pop();
|
||
callback(e);
|
||
});
|
||
}).bind(api);
|
||
}
|
||
|
||
async function fetchJSON(url, options) {
|
||
|
||
let result = {};
|
||
|
||
options = options || {};
|
||
options.headers = options.headers || new h();
|
||
|
||
if (!options.headers.get('Content-Type')) {
|
||
options.headers.set('Content-Type', 'application/json');
|
||
}
|
||
if (!options.headers.get('Accept')) {
|
||
options.headers.set('Accept', 'application/json');
|
||
}
|
||
|
||
const response = await ourFetch(url, options);
|
||
result.ok = response.ok;
|
||
result.status = response.status;
|
||
const json = await response.json();
|
||
|
||
result.data = json;
|
||
if (!result.ok) {
|
||
result.data.status = result.status;
|
||
let err = generateErrorFromResponse(result.data);
|
||
throw err;
|
||
}
|
||
|
||
if (Array.isArray(result.data)) {
|
||
result.data = result.data.map(function (v) {
|
||
if (v.error || v.missing) {
|
||
return generateErrorFromResponse(v);
|
||
} else {
|
||
return v;
|
||
}
|
||
});
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
let setupPromise;
|
||
|
||
async function setup() {
|
||
if (opts.skip_setup) {
|
||
return Promise.resolve();
|
||
}
|
||
|
||
// If there is a setup in process or previous successful setup
|
||
// done then we will use that
|
||
// If previous setups have been rejected we will try again
|
||
if (setupPromise) {
|
||
return setupPromise;
|
||
}
|
||
|
||
setupPromise = fetchJSON(dbUrl).catch(function (err) {
|
||
if (err && err.status && err.status === 404) {
|
||
// Doesnt exist, create it
|
||
explainError(404, 'PouchDB is just detecting if the remote exists.');
|
||
return fetchJSON(dbUrl, {method: 'PUT'});
|
||
} else {
|
||
return Promise.reject(err);
|
||
}
|
||
}).catch(function (err) {
|
||
// If we try to create a database that already exists, skipped in
|
||
// istanbul since its catching a race condition.
|
||
/* istanbul ignore if */
|
||
if (err && err.status && err.status === 412) {
|
||
return true;
|
||
}
|
||
return Promise.reject(err);
|
||
});
|
||
|
||
setupPromise.catch(function () {
|
||
setupPromise = null;
|
||
});
|
||
|
||
return setupPromise;
|
||
}
|
||
|
||
immediate(function () {
|
||
callback(null, api);
|
||
});
|
||
|
||
api._remote = true;
|
||
|
||
/* istanbul ignore next */
|
||
api.type = function () {
|
||
return 'http';
|
||
};
|
||
|
||
api.id = adapterFun$$1('id', async function (callback) {
|
||
let result;
|
||
try {
|
||
const response = await ourFetch(genUrl(host, ''));
|
||
result = await response.json();
|
||
} catch (err) {
|
||
result = {};
|
||
}
|
||
|
||
// Bad response or missing `uuid` should not prevent ID generation.
|
||
let uuid$$1 = (result && result.uuid) ? (result.uuid + host.db) : genDBUrl(host, '');
|
||
callback(null, uuid$$1);
|
||
});
|
||
|
||
// Sends a POST request to the host calling the couchdb _compact function
|
||
// version: The version of CouchDB it is running
|
||
api.compact = adapterFun$$1('compact', async function (opts, callback) {
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
opts = clone(opts);
|
||
|
||
await fetchJSON(genDBUrl(host, '_compact'), {method: 'POST'});
|
||
|
||
function ping() {
|
||
api.info(function (err, res) {
|
||
// CouchDB may send a "compact_running:true" if it's
|
||
// already compacting. PouchDB Server doesn't.
|
||
/* istanbul ignore else */
|
||
if (res && !res.compact_running) {
|
||
callback(null, {ok: true});
|
||
} else {
|
||
setTimeout(ping, opts.interval || 200);
|
||
}
|
||
});
|
||
}
|
||
// Ping the http if it's finished compaction
|
||
ping();
|
||
});
|
||
|
||
api.bulkGet = adapterFun('bulkGet', function (opts, callback) {
|
||
let self = this;
|
||
|
||
async function doBulkGet(cb) {
|
||
let params = {};
|
||
if (opts.revs) {
|
||
params.revs = true;
|
||
}
|
||
if (opts.attachments) {
|
||
/* istanbul ignore next */
|
||
params.attachments = true;
|
||
}
|
||
if (opts.latest) {
|
||
params.latest = true;
|
||
}
|
||
try {
|
||
const result = await fetchJSON(genDBUrl(host, '_bulk_get' + paramsToStr(params)), {
|
||
method: 'POST',
|
||
body: JSON.stringify({ docs: opts.docs})
|
||
});
|
||
|
||
if (opts.attachments && opts.binary) {
|
||
result.data.results.forEach(function (res) {
|
||
res.docs.forEach(readAttachmentsAsBlobOrBuffer);
|
||
});
|
||
}
|
||
cb(null, result.data);
|
||
} catch (error) {
|
||
cb(error);
|
||
}
|
||
}
|
||
|
||
/* istanbul ignore next */
|
||
function doBulkGetShim() {
|
||
// avoid "url too long error" by splitting up into multiple requests
|
||
let batchSize = MAX_SIMULTANEOUS_REVS;
|
||
let numBatches = Math.ceil(opts.docs.length / batchSize);
|
||
let numDone = 0;
|
||
let results = new Array(numBatches);
|
||
|
||
function onResult(batchNum) {
|
||
return function (err, res) {
|
||
// err is impossible because shim returns a list of errs in that case
|
||
results[batchNum] = res.results;
|
||
if (++numDone === numBatches) {
|
||
callback(null, {results: flatten(results)});
|
||
}
|
||
};
|
||
}
|
||
|
||
for (let i = 0; i < numBatches; i++) {
|
||
let subOpts = pick(opts, ['revs', 'attachments', 'binary', 'latest']);
|
||
subOpts.docs = opts.docs.slice(i * batchSize,
|
||
Math.min(opts.docs.length, (i + 1) * batchSize));
|
||
bulkGet(self, subOpts, onResult(i));
|
||
}
|
||
}
|
||
|
||
// mark the whole database as either supporting or not supporting _bulk_get
|
||
let dbUrl = genUrl(host, '');
|
||
let supportsBulkGet = supportsBulkGetMap[dbUrl];
|
||
|
||
/* istanbul ignore next */
|
||
if (typeof supportsBulkGet !== 'boolean') {
|
||
// check if this database supports _bulk_get
|
||
doBulkGet(function (err, res) {
|
||
if (err) {
|
||
supportsBulkGetMap[dbUrl] = false;
|
||
explainError(
|
||
err.status,
|
||
'PouchDB is just detecting if the remote ' +
|
||
'supports the _bulk_get API.'
|
||
);
|
||
doBulkGetShim();
|
||
} else {
|
||
supportsBulkGetMap[dbUrl] = true;
|
||
callback(null, res);
|
||
}
|
||
});
|
||
} else if (supportsBulkGet) {
|
||
doBulkGet(callback);
|
||
} else {
|
||
doBulkGetShim();
|
||
}
|
||
});
|
||
|
||
// Calls GET on the host, which gets back a JSON string containing
|
||
// couchdb: A welcome string
|
||
// version: The version of CouchDB it is running
|
||
api._info = async function (callback) {
|
||
try {
|
||
await setup();
|
||
const response = await ourFetch(genDBUrl(host, ''));
|
||
const info = await response.json();
|
||
info.host = genDBUrl(host, '');
|
||
callback(null, info);
|
||
} catch (err) {
|
||
callback(err);
|
||
}
|
||
};
|
||
|
||
api.fetch = async function (path, options) {
|
||
await setup();
|
||
const url = path.substring(0, 1) === '/' ?
|
||
genUrl(host, path.substring(1)) :
|
||
genDBUrl(host, path);
|
||
return ourFetch(url, options);
|
||
};
|
||
|
||
// Get the document with the given id from the database given by host.
|
||
// The id could be solely the _id in the database, or it may be a
|
||
// _design/ID or _local/ID path
|
||
api.get = adapterFun$$1('get', async function (id, opts, callback) {
|
||
// If no options were given, set the callback to the second parameter
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
opts = clone(opts);
|
||
|
||
// List of parameters to add to the GET request
|
||
let params = {};
|
||
|
||
if (opts.revs) {
|
||
params.revs = true;
|
||
}
|
||
|
||
if (opts.revs_info) {
|
||
params.revs_info = true;
|
||
}
|
||
|
||
if (opts.latest) {
|
||
params.latest = true;
|
||
}
|
||
|
||
if (opts.open_revs) {
|
||
if (opts.open_revs !== "all") {
|
||
opts.open_revs = JSON.stringify(opts.open_revs);
|
||
}
|
||
params.open_revs = opts.open_revs;
|
||
}
|
||
|
||
if (opts.rev) {
|
||
params.rev = opts.rev;
|
||
}
|
||
|
||
if (opts.conflicts) {
|
||
params.conflicts = opts.conflicts;
|
||
}
|
||
|
||
/* istanbul ignore if */
|
||
if (opts.update_seq) {
|
||
params.update_seq = opts.update_seq;
|
||
}
|
||
|
||
id = encodeDocId(id);
|
||
|
||
function fetchAttachments(doc) {
|
||
let atts = doc._attachments;
|
||
let filenames = atts && Object.keys(atts);
|
||
if (!atts || !filenames.length) {
|
||
return;
|
||
}
|
||
// we fetch these manually in separate XHRs, because
|
||
// Sync Gateway would normally send it back as multipart/mixed,
|
||
// which we cannot parse. Also, this is more efficient than
|
||
// receiving attachments as base64-encoded strings.
|
||
async function fetchData(filename) {
|
||
const att = atts[filename];
|
||
const path = encodeDocId(doc._id) + '/' + encodeAttachmentId(filename) +
|
||
'?rev=' + doc._rev;
|
||
|
||
const response = await ourFetch(genDBUrl(host, path));
|
||
|
||
let blob;
|
||
if ('buffer' in response) {
|
||
blob = await response.buffer();
|
||
} else {
|
||
/* istanbul ignore next */
|
||
blob = await response.blob();
|
||
}
|
||
|
||
let data;
|
||
if (opts.binary) {
|
||
let typeFieldDescriptor = Object.getOwnPropertyDescriptor(blob.__proto__, 'type');
|
||
if (!typeFieldDescriptor || typeFieldDescriptor.set) {
|
||
blob.type = att.content_type;
|
||
}
|
||
data = blob;
|
||
} else {
|
||
data = await new Promise(function (resolve) {
|
||
blobToBase64(blob, resolve);
|
||
});
|
||
}
|
||
|
||
delete att.stub;
|
||
delete att.length;
|
||
att.data = data;
|
||
}
|
||
|
||
let promiseFactories = filenames.map(function (filename) {
|
||
return function () {
|
||
return fetchData(filename);
|
||
};
|
||
});
|
||
|
||
// This limits the number of parallel xhr requests to 5 any time
|
||
// to avoid issues with maximum browser request limits
|
||
return pool(promiseFactories, 5);
|
||
}
|
||
|
||
function fetchAllAttachments(docOrDocs) {
|
||
if (Array.isArray(docOrDocs)) {
|
||
return Promise.all(docOrDocs.map(function (doc) {
|
||
if (doc.ok) {
|
||
return fetchAttachments(doc.ok);
|
||
}
|
||
}));
|
||
}
|
||
return fetchAttachments(docOrDocs);
|
||
}
|
||
|
||
const url = genDBUrl(host, id + paramsToStr(params));
|
||
try {
|
||
const res = await fetchJSON(url);
|
||
if (opts.attachments) {
|
||
await fetchAllAttachments(res.data);
|
||
}
|
||
callback(null, res.data);
|
||
} catch (error) {
|
||
error.docId = id;
|
||
callback(error);
|
||
}
|
||
});
|
||
|
||
|
||
// Delete the document given by doc from the database given by host.
|
||
api.remove = adapterFun$$1('remove', async function (docOrId, optsOrRev, opts, cb) {
|
||
let doc;
|
||
if (typeof optsOrRev === 'string') {
|
||
// id, rev, opts, callback style
|
||
doc = {
|
||
_id: docOrId,
|
||
_rev: optsOrRev
|
||
};
|
||
if (typeof opts === 'function') {
|
||
cb = opts;
|
||
opts = {};
|
||
}
|
||
} else {
|
||
// doc, opts, callback style
|
||
doc = docOrId;
|
||
if (typeof optsOrRev === 'function') {
|
||
cb = optsOrRev;
|
||
opts = {};
|
||
} else {
|
||
cb = opts;
|
||
opts = optsOrRev;
|
||
}
|
||
}
|
||
|
||
const rev = (doc._rev || opts.rev);
|
||
const url = genDBUrl(host, encodeDocId(doc._id)) + '?rev=' + rev;
|
||
|
||
try {
|
||
const result = await fetchJSON(url, {method: 'DELETE'});
|
||
cb(null, result.data);
|
||
} catch (error) {
|
||
cb(error);
|
||
}
|
||
});
|
||
|
||
function encodeAttachmentId(attachmentId) {
|
||
return attachmentId.split("/").map(encodeURIComponent).join("/");
|
||
}
|
||
|
||
// Get the attachment
|
||
api.getAttachment = adapterFun$$1('getAttachment', async function (docId, attachmentId,
|
||
opts, callback) {
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
const params = opts.rev ? ('?rev=' + opts.rev) : '';
|
||
const url = genDBUrl(host, encodeDocId(docId)) + '/' +
|
||
encodeAttachmentId(attachmentId) + params;
|
||
let contentType;
|
||
try {
|
||
const response = await ourFetch(url, {method: 'GET'});
|
||
|
||
if (!response.ok) {
|
||
throw response;
|
||
}
|
||
|
||
contentType = response.headers.get('content-type');
|
||
let blob;
|
||
if (typeof process !== 'undefined' && !process.browser && typeof response.buffer === 'function') {
|
||
blob = await response.buffer();
|
||
} else {
|
||
/* istanbul ignore next */
|
||
blob = await response.blob();
|
||
}
|
||
|
||
// TODO: also remove
|
||
if (typeof process !== 'undefined' && !process.browser) {
|
||
var typeFieldDescriptor = Object.getOwnPropertyDescriptor(blob.__proto__, 'type');
|
||
if (!typeFieldDescriptor || typeFieldDescriptor.set) {
|
||
blob.type = contentType;
|
||
}
|
||
}
|
||
callback(null, blob);
|
||
} catch (err) {
|
||
callback(err);
|
||
}
|
||
});
|
||
|
||
// Remove the attachment given by the id and rev
|
||
api.removeAttachment = adapterFun$$1('removeAttachment', async function (
|
||
docId,
|
||
attachmentId,
|
||
rev,
|
||
callback,
|
||
) {
|
||
const url = genDBUrl(host, encodeDocId(docId) + '/' + encodeAttachmentId(attachmentId)) + '?rev=' + rev;
|
||
|
||
try {
|
||
const result = await fetchJSON(url, {method: 'DELETE'});
|
||
callback(null, result.data);
|
||
} catch (error) {
|
||
callback(error);
|
||
}
|
||
});
|
||
|
||
// Add the attachment given by blob and its contentType property
|
||
// to the document with the given id, the revision given by rev, and
|
||
// add it to the database given by host.
|
||
api.putAttachment = adapterFun$$1('putAttachment', async function (
|
||
docId,
|
||
attachmentId,
|
||
rev,
|
||
blob,
|
||
type,
|
||
callback,
|
||
) {
|
||
if (typeof type === 'function') {
|
||
callback = type;
|
||
type = blob;
|
||
blob = rev;
|
||
rev = null;
|
||
}
|
||
const id = encodeDocId(docId) + '/' + encodeAttachmentId(attachmentId);
|
||
let url = genDBUrl(host, id);
|
||
if (rev) {
|
||
url += '?rev=' + rev;
|
||
}
|
||
|
||
if (typeof blob === 'string') {
|
||
// input is assumed to be a base64 string
|
||
let binary;
|
||
try {
|
||
binary = thisAtob(blob);
|
||
} catch (err) {
|
||
return callback(createError(BAD_ARG,
|
||
'Attachment is not a valid base64 string'));
|
||
}
|
||
blob = binary ? binStringToBluffer(binary, type) : '';
|
||
}
|
||
|
||
try {
|
||
// Add the attachment
|
||
const result = await fetchJSON(url, {
|
||
headers: new h({'Content-Type': type}),
|
||
method: 'PUT',
|
||
body: blob
|
||
});
|
||
callback(null, result.data);
|
||
} catch (error) {
|
||
callback(error);
|
||
}
|
||
});
|
||
|
||
// Update/create multiple documents given by req in the database
|
||
// given by host.
|
||
api._bulkDocs = async function (req, opts, callback) {
|
||
// If new_edits=false then it prevents the database from creating
|
||
// new revision numbers for the documents. Instead it just uses
|
||
// the old ones. This is used in database replication.
|
||
req.new_edits = opts.new_edits;
|
||
|
||
try {
|
||
await setup();
|
||
await Promise.all(req.docs.map(preprocessAttachments$1));
|
||
|
||
// Update/create the documents
|
||
const result = await fetchJSON(genDBUrl(host, '_bulk_docs'), {
|
||
method: 'POST',
|
||
body: JSON.stringify(req)
|
||
});
|
||
callback(null, result.data);
|
||
} catch (error) {
|
||
callback(error);
|
||
}
|
||
};
|
||
|
||
// Update/create document
|
||
api._put = async function (doc, opts, callback) {
|
||
try {
|
||
await setup();
|
||
await preprocessAttachments$1(doc);
|
||
|
||
const result = await fetchJSON(genDBUrl(host, encodeDocId(doc._id)), {
|
||
method: 'PUT',
|
||
body: JSON.stringify(doc)
|
||
});
|
||
callback(null, result.data);
|
||
} catch (error) {
|
||
error.docId = doc && doc._id;
|
||
callback(error);
|
||
}
|
||
};
|
||
|
||
|
||
// Get a listing of the documents in the database given
|
||
// by host and ordered by increasing id.
|
||
api.allDocs = adapterFun$$1('allDocs', async function (opts, callback) {
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
opts = clone(opts);
|
||
|
||
// List of parameters to add to the GET request
|
||
let params = {};
|
||
let body;
|
||
let method = 'GET';
|
||
|
||
if (opts.conflicts) {
|
||
params.conflicts = true;
|
||
}
|
||
|
||
/* istanbul ignore if */
|
||
if (opts.update_seq) {
|
||
params.update_seq = true;
|
||
}
|
||
|
||
if (opts.descending) {
|
||
params.descending = true;
|
||
}
|
||
|
||
if (opts.include_docs) {
|
||
params.include_docs = true;
|
||
}
|
||
|
||
// added in CouchDB 1.6.0
|
||
if (opts.attachments) {
|
||
params.attachments = true;
|
||
}
|
||
|
||
if (opts.key) {
|
||
params.key = JSON.stringify(opts.key);
|
||
}
|
||
|
||
if (opts.start_key) {
|
||
opts.startkey = opts.start_key;
|
||
}
|
||
|
||
if (opts.startkey) {
|
||
params.startkey = JSON.stringify(opts.startkey);
|
||
}
|
||
|
||
if (opts.end_key) {
|
||
opts.endkey = opts.end_key;
|
||
}
|
||
|
||
if (opts.endkey) {
|
||
params.endkey = JSON.stringify(opts.endkey);
|
||
}
|
||
|
||
if (typeof opts.inclusive_end !== 'undefined') {
|
||
params.inclusive_end = !!opts.inclusive_end;
|
||
}
|
||
|
||
if (typeof opts.limit !== 'undefined') {
|
||
params.limit = opts.limit;
|
||
}
|
||
|
||
if (typeof opts.skip !== 'undefined') {
|
||
params.skip = opts.skip;
|
||
}
|
||
|
||
let paramStr = paramsToStr(params);
|
||
|
||
if (typeof opts.keys !== 'undefined') {
|
||
method = 'POST';
|
||
body = {keys: opts.keys};
|
||
}
|
||
|
||
try {
|
||
const result = await fetchJSON(genDBUrl(host, '_all_docs' + paramStr), {
|
||
method: method,
|
||
body: JSON.stringify(body)
|
||
});
|
||
if (opts.include_docs && opts.attachments && opts.binary) {
|
||
result.data.rows.forEach(readAttachmentsAsBlobOrBuffer);
|
||
}
|
||
callback(null, result.data);
|
||
} catch (error) {
|
||
callback(error);
|
||
}
|
||
});
|
||
|
||
// Get a list of changes made to documents in the database given by host.
|
||
// TODO According to the README, there should be two other methods here,
|
||
// api.changes.addListener and api.changes.removeListener.
|
||
api._changes = function (opts) {
|
||
|
||
// We internally page the results of a changes request, this means
|
||
// if there is a large set of changes to be returned we can start
|
||
// processing them quicker instead of waiting on the entire
|
||
// set of changes to return and attempting to process them at once
|
||
let batchSize = 'batch_size' in opts ? opts.batch_size : CHANGES_BATCH_SIZE;
|
||
|
||
opts = clone(opts);
|
||
|
||
if (opts.continuous && !('heartbeat' in opts)) {
|
||
opts.heartbeat = DEFAULT_HEARTBEAT;
|
||
}
|
||
|
||
let requestTimeout = ('timeout' in opts) ? opts.timeout : 30 * 1000;
|
||
|
||
// ensure CHANGES_TIMEOUT_BUFFER applies
|
||
if ('timeout' in opts && opts.timeout &&
|
||
(requestTimeout - opts.timeout) < CHANGES_TIMEOUT_BUFFER) {
|
||
requestTimeout = opts.timeout + CHANGES_TIMEOUT_BUFFER;
|
||
}
|
||
|
||
/* istanbul ignore if */
|
||
if ('heartbeat' in opts && opts.heartbeat &&
|
||
(requestTimeout - opts.heartbeat) < CHANGES_TIMEOUT_BUFFER) {
|
||
requestTimeout = opts.heartbeat + CHANGES_TIMEOUT_BUFFER;
|
||
}
|
||
|
||
let params = {};
|
||
if ('timeout' in opts && opts.timeout) {
|
||
params.timeout = opts.timeout;
|
||
}
|
||
|
||
let limit = (typeof opts.limit !== 'undefined') ? opts.limit : false;
|
||
let leftToFetch = limit;
|
||
|
||
if (opts.style) {
|
||
params.style = opts.style;
|
||
}
|
||
|
||
if (opts.include_docs || opts.filter && typeof opts.filter === 'function') {
|
||
params.include_docs = true;
|
||
}
|
||
|
||
if (opts.attachments) {
|
||
params.attachments = true;
|
||
}
|
||
|
||
if (opts.continuous) {
|
||
params.feed = 'longpoll';
|
||
}
|
||
|
||
if (opts.seq_interval) {
|
||
params.seq_interval = opts.seq_interval;
|
||
}
|
||
|
||
if (opts.conflicts) {
|
||
params.conflicts = true;
|
||
}
|
||
|
||
if (opts.descending) {
|
||
params.descending = true;
|
||
}
|
||
|
||
/* istanbul ignore if */
|
||
if (opts.update_seq) {
|
||
params.update_seq = true;
|
||
}
|
||
|
||
if ('heartbeat' in opts) {
|
||
// If the heartbeat value is false, it disables the default heartbeat
|
||
if (opts.heartbeat) {
|
||
params.heartbeat = opts.heartbeat;
|
||
}
|
||
}
|
||
|
||
if (opts.filter && typeof opts.filter === 'string') {
|
||
params.filter = opts.filter;
|
||
}
|
||
|
||
if (opts.view && typeof opts.view === 'string') {
|
||
params.filter = '_view';
|
||
params.view = opts.view;
|
||
}
|
||
|
||
// If opts.query_params exists, pass it through to the changes request.
|
||
// These parameters may be used by the filter on the source database.
|
||
if (opts.query_params && typeof opts.query_params === 'object') {
|
||
for (let param_name in opts.query_params) {
|
||
/* istanbul ignore else */
|
||
if (Object.prototype.hasOwnProperty.call(opts.query_params, param_name)) {
|
||
params[param_name] = opts.query_params[param_name];
|
||
}
|
||
}
|
||
}
|
||
|
||
let method = 'GET';
|
||
let body;
|
||
|
||
if (opts.doc_ids) {
|
||
// set this automagically for the user; it's annoying that couchdb
|
||
// requires both a "filter" and a "doc_ids" param.
|
||
params.filter = '_doc_ids';
|
||
method = 'POST';
|
||
body = {doc_ids: opts.doc_ids };
|
||
}
|
||
/* istanbul ignore next */
|
||
else if (opts.selector) {
|
||
// set this automagically for the user, similar to above
|
||
params.filter = '_selector';
|
||
method = 'POST';
|
||
body = {selector: opts.selector };
|
||
}
|
||
|
||
let controller = new a();
|
||
let lastFetchedSeq;
|
||
|
||
// Get all the changes starting wtih the one immediately after the
|
||
// sequence number given by since.
|
||
const fetchData = async function (since, callback) {
|
||
if (opts.aborted) {
|
||
return;
|
||
}
|
||
params.since = since;
|
||
// "since" can be any kind of json object in Cloudant/CouchDB 2.x
|
||
/* istanbul ignore next */
|
||
if (typeof params.since === "object") {
|
||
params.since = JSON.stringify(params.since);
|
||
}
|
||
|
||
if (opts.descending) {
|
||
if (limit) {
|
||
params.limit = leftToFetch;
|
||
}
|
||
} else {
|
||
params.limit = (!limit || leftToFetch > batchSize) ?
|
||
batchSize : leftToFetch;
|
||
}
|
||
|
||
// Set the options for the ajax call
|
||
let url = genDBUrl(host, '_changes' + paramsToStr(params));
|
||
let fetchOpts = {
|
||
signal: controller.signal,
|
||
method: method,
|
||
body: JSON.stringify(body)
|
||
};
|
||
lastFetchedSeq = since;
|
||
|
||
/* istanbul ignore if */
|
||
if (opts.aborted) {
|
||
return;
|
||
}
|
||
|
||
// Get the changes
|
||
try {
|
||
await setup();
|
||
const result = await fetchJSON(url, fetchOpts);
|
||
callback(null, result.data);
|
||
} catch (error) {
|
||
callback(error);
|
||
}
|
||
};
|
||
|
||
// If opts.since exists, get all the changes from the sequence
|
||
// number given by opts.since. Otherwise, get all the changes
|
||
// from the sequence number 0.
|
||
let results = {results: []};
|
||
|
||
const fetched = function (err, res) {
|
||
if (opts.aborted) {
|
||
return;
|
||
}
|
||
let raw_results_length = 0;
|
||
// If the result of the ajax call (res) contains changes (res.results)
|
||
if (res && res.results) {
|
||
raw_results_length = res.results.length;
|
||
results.last_seq = res.last_seq;
|
||
let pending = null;
|
||
let lastSeq = null;
|
||
// Attach 'pending' property if server supports it (CouchDB 2.0+)
|
||
/* istanbul ignore if */
|
||
if (typeof res.pending === 'number') {
|
||
pending = res.pending;
|
||
}
|
||
if (typeof results.last_seq === 'string' || typeof results.last_seq === 'number') {
|
||
lastSeq = results.last_seq;
|
||
}
|
||
// For each change
|
||
let req = {};
|
||
req.query = opts.query_params;
|
||
res.results = res.results.filter(function (c) {
|
||
leftToFetch--;
|
||
let ret = filterChange(opts)(c);
|
||
if (ret) {
|
||
if (opts.include_docs && opts.attachments && opts.binary) {
|
||
readAttachmentsAsBlobOrBuffer(c);
|
||
}
|
||
if (opts.return_docs) {
|
||
results.results.push(c);
|
||
}
|
||
opts.onChange(c, pending, lastSeq);
|
||
}
|
||
return ret;
|
||
});
|
||
} else if (err) {
|
||
// In case of an error, stop listening for changes and call
|
||
// opts.complete
|
||
opts.aborted = true;
|
||
opts.complete(err);
|
||
return;
|
||
}
|
||
|
||
// The changes feed may have timed out with no results
|
||
// if so reuse last update sequence
|
||
if (res && res.last_seq) {
|
||
lastFetchedSeq = res.last_seq;
|
||
}
|
||
|
||
let finished = (limit && leftToFetch <= 0) ||
|
||
(res && raw_results_length < batchSize) ||
|
||
(opts.descending);
|
||
|
||
if ((opts.continuous && !(limit && leftToFetch <= 0)) || !finished) {
|
||
// Queue a call to fetch again with the newest sequence number
|
||
immediate(function () { fetchData(lastFetchedSeq, fetched); });
|
||
} else {
|
||
// We're done, call the callback
|
||
opts.complete(null, results);
|
||
}
|
||
};
|
||
|
||
fetchData(opts.since || 0, fetched);
|
||
|
||
// Return a method to cancel this method from processing any more
|
||
return {
|
||
cancel: function () {
|
||
opts.aborted = true;
|
||
controller.abort();
|
||
}
|
||
};
|
||
};
|
||
|
||
// Given a set of document/revision IDs (given by req), tets the subset of
|
||
// those that do NOT correspond to revisions stored in the database.
|
||
// See http://wiki.apache.org/couchdb/HttpPostRevsDiff
|
||
api.revsDiff = adapterFun$$1('revsDiff', async function (req, opts, callback) {
|
||
// If no options were given, set the callback to be the second parameter
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
|
||
try {
|
||
// Get the missing document/revision IDs
|
||
const result = await fetchJSON(genDBUrl(host, '_revs_diff'), {
|
||
method: 'POST',
|
||
body: JSON.stringify(req)
|
||
});
|
||
callback(null, result.data);
|
||
} catch (error) {
|
||
callback(error);
|
||
}
|
||
});
|
||
|
||
api._close = function (callback) {
|
||
callback();
|
||
};
|
||
|
||
api._destroy = async function (options, callback) {
|
||
try {
|
||
const json = await fetchJSON(genDBUrl(host, ''), {method: 'DELETE'});
|
||
callback(null, json);
|
||
} catch (error) {
|
||
if (error.status === 404) {
|
||
callback(null, {ok: true});
|
||
} else {
|
||
callback(error);
|
||
}
|
||
}
|
||
};
|
||
}
|
||
|
||
// HttpPouch is a valid adapter.
|
||
HttpPouch.valid = function () {
|
||
return true;
|
||
};
|
||
|
||
function HttpPouch$1 (PouchDB) {
|
||
PouchDB.adapter('http', HttpPouch, false);
|
||
PouchDB.adapter('https', HttpPouch, false);
|
||
}
|
||
|
||
class QueryParseError extends Error {
|
||
constructor(message) {
|
||
super();
|
||
this.status = 400;
|
||
this.name = 'query_parse_error';
|
||
this.message = message;
|
||
this.error = true;
|
||
try {
|
||
Error.captureStackTrace(this, QueryParseError);
|
||
} catch (e) {}
|
||
}
|
||
}
|
||
|
||
class NotFoundError extends Error {
|
||
constructor(message) {
|
||
super();
|
||
this.status = 404;
|
||
this.name = 'not_found';
|
||
this.message = message;
|
||
this.error = true;
|
||
try {
|
||
Error.captureStackTrace(this, NotFoundError);
|
||
} catch (e) {}
|
||
}
|
||
}
|
||
|
||
class BuiltInError extends Error {
|
||
constructor(message) {
|
||
super();
|
||
this.status = 500;
|
||
this.name = 'invalid_value';
|
||
this.message = message;
|
||
this.error = true;
|
||
try {
|
||
Error.captureStackTrace(this, BuiltInError);
|
||
} catch (e) {}
|
||
}
|
||
}
|
||
|
||
function promisedCallback(promise, callback) {
|
||
if (callback) {
|
||
promise.then(function (res) {
|
||
immediate(function () {
|
||
callback(null, res);
|
||
});
|
||
}, function (reason) {
|
||
immediate(function () {
|
||
callback(reason);
|
||
});
|
||
});
|
||
}
|
||
return promise;
|
||
}
|
||
|
||
function callbackify(fun) {
|
||
return function (...args) {
|
||
var cb = args.pop();
|
||
var promise = fun.apply(this, args);
|
||
if (typeof cb === 'function') {
|
||
promisedCallback(promise, cb);
|
||
}
|
||
return promise;
|
||
};
|
||
}
|
||
|
||
// Promise finally util similar to Q.finally
|
||
function fin(promise, finalPromiseFactory) {
|
||
return promise.then(function (res) {
|
||
return finalPromiseFactory().then(function () {
|
||
return res;
|
||
});
|
||
}, function (reason) {
|
||
return finalPromiseFactory().then(function () {
|
||
throw reason;
|
||
});
|
||
});
|
||
}
|
||
|
||
function sequentialize(queue, promiseFactory) {
|
||
return function () {
|
||
var args = arguments;
|
||
var that = this;
|
||
return queue.add(function () {
|
||
return promiseFactory.apply(that, args);
|
||
});
|
||
};
|
||
}
|
||
|
||
// uniq an array of strings, order not guaranteed
|
||
// similar to underscore/lodash _.uniq
|
||
function uniq(arr) {
|
||
var theSet = new ExportedSet(arr);
|
||
var result = new Array(theSet.size);
|
||
var index = -1;
|
||
theSet.forEach(function (value) {
|
||
result[++index] = value;
|
||
});
|
||
return result;
|
||
}
|
||
|
||
function mapToKeysArray(map) {
|
||
var result = new Array(map.size);
|
||
var index = -1;
|
||
map.forEach(function (value, key) {
|
||
result[++index] = key;
|
||
});
|
||
return result;
|
||
}
|
||
|
||
function createBuiltInError(name) {
|
||
var message = 'builtin ' + name +
|
||
' function requires map values to be numbers' +
|
||
' or number arrays';
|
||
return new BuiltInError(message);
|
||
}
|
||
|
||
function sum(values) {
|
||
var result = 0;
|
||
for (var i = 0, len = values.length; i < len; i++) {
|
||
var num = values[i];
|
||
if (typeof num !== 'number') {
|
||
if (Array.isArray(num)) {
|
||
// lists of numbers are also allowed, sum them separately
|
||
result = typeof result === 'number' ? [result] : result;
|
||
for (var j = 0, jLen = num.length; j < jLen; j++) {
|
||
var jNum = num[j];
|
||
if (typeof jNum !== 'number') {
|
||
throw createBuiltInError('_sum');
|
||
} else if (typeof result[j] === 'undefined') {
|
||
result.push(jNum);
|
||
} else {
|
||
result[j] += jNum;
|
||
}
|
||
}
|
||
} else { // not array/number
|
||
throw createBuiltInError('_sum');
|
||
}
|
||
} else if (typeof result === 'number') {
|
||
result += num;
|
||
} else { // add number to array
|
||
result[0] += num;
|
||
}
|
||
}
|
||
return result;
|
||
}
|
||
|
||
var log = guardedConsole.bind(null, 'log');
|
||
var isArray = Array.isArray;
|
||
var toJSON = JSON.parse;
|
||
|
||
function evalFunctionWithEval(func, emit) {
|
||
return scopeEval(
|
||
"return (" + func.replace(/;\s*$/, "") + ");",
|
||
{
|
||
emit: emit,
|
||
sum: sum,
|
||
log: log,
|
||
isArray: isArray,
|
||
toJSON: toJSON
|
||
}
|
||
);
|
||
}
|
||
|
||
/*
|
||
* Simple task queue to sequentialize actions. Assumes
|
||
* callbacks will eventually fire (once).
|
||
*/
|
||
|
||
|
||
class TaskQueue$1 {
|
||
constructor() {
|
||
this.promise = new Promise(function (fulfill) {fulfill(); });
|
||
}
|
||
|
||
add(promiseFactory) {
|
||
this.promise = this.promise.catch(function () {
|
||
// just recover
|
||
}).then(function () {
|
||
return promiseFactory();
|
||
});
|
||
return this.promise;
|
||
}
|
||
|
||
finish() {
|
||
return this.promise;
|
||
}
|
||
}
|
||
|
||
function stringify(input) {
|
||
if (!input) {
|
||
return 'undefined'; // backwards compat for empty reduce
|
||
}
|
||
// for backwards compat with mapreduce, functions/strings are stringified
|
||
// as-is. everything else is JSON-stringified.
|
||
switch (typeof input) {
|
||
case 'function':
|
||
// e.g. a mapreduce map
|
||
return input.toString();
|
||
case 'string':
|
||
// e.g. a mapreduce built-in _reduce function
|
||
return input.toString();
|
||
default:
|
||
// e.g. a JSON object in the case of mango queries
|
||
return JSON.stringify(input);
|
||
}
|
||
}
|
||
|
||
/* create a string signature for a view so we can cache it and uniq it */
|
||
function createViewSignature(mapFun, reduceFun) {
|
||
// the "undefined" part is for backwards compatibility
|
||
return stringify(mapFun) + stringify(reduceFun) + 'undefined';
|
||
}
|
||
|
||
async function createView(sourceDB, viewName, mapFun, reduceFun, temporary, localDocName) {
|
||
const viewSignature = createViewSignature(mapFun, reduceFun);
|
||
|
||
let cachedViews;
|
||
if (!temporary) {
|
||
// cache this to ensure we don't try to update the same view twice
|
||
cachedViews = sourceDB._cachedViews = sourceDB._cachedViews || {};
|
||
if (cachedViews[viewSignature]) {
|
||
return cachedViews[viewSignature];
|
||
}
|
||
}
|
||
|
||
const promiseForView = sourceDB.info().then(async function (info) {
|
||
const depDbName = info.db_name + '-mrview-' +
|
||
(temporary ? 'temp' : stringMd5(viewSignature));
|
||
|
||
// save the view name in the source db so it can be cleaned up if necessary
|
||
// (e.g. when the _design doc is deleted, remove all associated view data)
|
||
function diffFunction(doc) {
|
||
doc.views = doc.views || {};
|
||
let fullViewName = viewName;
|
||
if (fullViewName.indexOf('/') === -1) {
|
||
fullViewName = viewName + '/' + viewName;
|
||
}
|
||
const depDbs = doc.views[fullViewName] = doc.views[fullViewName] || {};
|
||
/* istanbul ignore if */
|
||
if (depDbs[depDbName]) {
|
||
return; // no update necessary
|
||
}
|
||
depDbs[depDbName] = true;
|
||
return doc;
|
||
}
|
||
await upsert(sourceDB, '_local/' + localDocName, diffFunction);
|
||
const res = await sourceDB.registerDependentDatabase(depDbName);
|
||
const db = res.db;
|
||
db.auto_compaction = true;
|
||
const view = {
|
||
name: depDbName,
|
||
db: db,
|
||
sourceDB: sourceDB,
|
||
adapter: sourceDB.adapter,
|
||
mapFun: mapFun,
|
||
reduceFun: reduceFun
|
||
};
|
||
|
||
let lastSeqDoc;
|
||
try {
|
||
lastSeqDoc = await view.db.get('_local/lastSeq');
|
||
} catch (err) {
|
||
/* istanbul ignore if */
|
||
if (err.status !== 404) {
|
||
throw err;
|
||
}
|
||
}
|
||
|
||
view.seq = lastSeqDoc ? lastSeqDoc.seq : 0;
|
||
if (cachedViews) {
|
||
view.db.once('destroyed', function () {
|
||
delete cachedViews[viewSignature];
|
||
});
|
||
}
|
||
return view;
|
||
});
|
||
|
||
if (cachedViews) {
|
||
cachedViews[viewSignature] = promiseForView;
|
||
}
|
||
return promiseForView;
|
||
}
|
||
|
||
var persistentQueues = {};
|
||
var tempViewQueue = new TaskQueue$1();
|
||
var CHANGES_BATCH_SIZE$1 = 50;
|
||
|
||
function parseViewName(name) {
|
||
// can be either 'ddocname/viewname' or just 'viewname'
|
||
// (where the ddoc name is the same)
|
||
return name.indexOf('/') === -1 ? [name, name] : name.split('/');
|
||
}
|
||
|
||
function isGenOne(changes) {
|
||
// only return true if the current change is 1-
|
||
// and there are no other leafs
|
||
return changes.length === 1 && /^1-/.test(changes[0].rev);
|
||
}
|
||
|
||
function emitError(db, e, data) {
|
||
try {
|
||
db.emit('error', e);
|
||
} catch (err) {
|
||
guardedConsole('error',
|
||
'The user\'s map/reduce function threw an uncaught error.\n' +
|
||
'You can debug this error by doing:\n' +
|
||
'myDatabase.on(\'error\', function (err) { debugger; });\n' +
|
||
'Please double-check your map/reduce function.');
|
||
guardedConsole('error', e, data);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Returns an "abstract" mapreduce object of the form:
|
||
*
|
||
* {
|
||
* query: queryFun,
|
||
* viewCleanup: viewCleanupFun
|
||
* }
|
||
*
|
||
* Arguments are:
|
||
*
|
||
* localDoc: string
|
||
* This is for the local doc that gets saved in order to track the
|
||
* "dependent" DBs and clean them up for viewCleanup. It should be
|
||
* unique, so that indexer plugins don't collide with each other.
|
||
* mapper: function (mapFunDef, emit)
|
||
* Returns a map function based on the mapFunDef, which in the case of
|
||
* normal map/reduce is just the de-stringified function, but may be
|
||
* something else, such as an object in the case of pouchdb-find.
|
||
* reducer: function (reduceFunDef)
|
||
* Ditto, but for reducing. Modules don't have to support reducing
|
||
* (e.g. pouchdb-find).
|
||
* ddocValidator: function (ddoc, viewName)
|
||
* Throws an error if the ddoc or viewName is not valid.
|
||
* This could be a way to communicate to the user that the configuration for the
|
||
* indexer is invalid.
|
||
*/
|
||
function createAbstractMapReduce(localDocName, mapper, reducer, ddocValidator) {
|
||
|
||
function tryMap(db, fun, doc) {
|
||
// emit an event if there was an error thrown by a map function.
|
||
// putting try/catches in a single function also avoids deoptimizations.
|
||
try {
|
||
fun(doc);
|
||
} catch (e) {
|
||
emitError(db, e, {fun: fun, doc: doc});
|
||
}
|
||
}
|
||
|
||
function tryReduce(db, fun, keys, values, rereduce) {
|
||
// same as above, but returning the result or an error. there are two separate
|
||
// functions to avoid extra memory allocations since the tryCode() case is used
|
||
// for custom map functions (common) vs this function, which is only used for
|
||
// custom reduce functions (rare)
|
||
try {
|
||
return {output : fun(keys, values, rereduce)};
|
||
} catch (e) {
|
||
emitError(db, e, {fun: fun, keys: keys, values: values, rereduce: rereduce});
|
||
return {error: e};
|
||
}
|
||
}
|
||
|
||
function sortByKeyThenValue(x, y) {
|
||
const keyCompare = collate(x.key, y.key);
|
||
return keyCompare !== 0 ? keyCompare : collate(x.value, y.value);
|
||
}
|
||
|
||
function sliceResults(results, limit, skip) {
|
||
skip = skip || 0;
|
||
if (typeof limit === 'number') {
|
||
return results.slice(skip, limit + skip);
|
||
} else if (skip > 0) {
|
||
return results.slice(skip);
|
||
}
|
||
return results;
|
||
}
|
||
|
||
function rowToDocId(row) {
|
||
const val = row.value;
|
||
// Users can explicitly specify a joined doc _id, or it
|
||
// defaults to the doc _id that emitted the key/value.
|
||
const docId = (val && typeof val === 'object' && val._id) || row.id;
|
||
return docId;
|
||
}
|
||
|
||
function readAttachmentsAsBlobOrBuffer(res) {
|
||
res.rows.forEach(function (row) {
|
||
const atts = row.doc && row.doc._attachments;
|
||
if (!atts) {
|
||
return;
|
||
}
|
||
Object.keys(atts).forEach(function (filename) {
|
||
const att = atts[filename];
|
||
atts[filename].data = b64ToBluffer(att.data, att.content_type);
|
||
});
|
||
});
|
||
}
|
||
|
||
function postprocessAttachments(opts) {
|
||
return function (res) {
|
||
if (opts.include_docs && opts.attachments && opts.binary) {
|
||
readAttachmentsAsBlobOrBuffer(res);
|
||
}
|
||
return res;
|
||
};
|
||
}
|
||
|
||
function addHttpParam(paramName, opts, params, asJson) {
|
||
// add an http param from opts to params, optionally json-encoded
|
||
let val = opts[paramName];
|
||
if (typeof val !== 'undefined') {
|
||
if (asJson) {
|
||
val = encodeURIComponent(JSON.stringify(val));
|
||
}
|
||
params.push(paramName + '=' + val);
|
||
}
|
||
}
|
||
|
||
function coerceInteger(integerCandidate) {
|
||
if (typeof integerCandidate !== 'undefined') {
|
||
const asNumber = Number(integerCandidate);
|
||
// prevents e.g. '1foo' or '1.1' being coerced to 1
|
||
if (!isNaN(asNumber) && asNumber === parseInt(integerCandidate, 10)) {
|
||
return asNumber;
|
||
} else {
|
||
return integerCandidate;
|
||
}
|
||
}
|
||
}
|
||
|
||
function coerceOptions(opts) {
|
||
opts.group_level = coerceInteger(opts.group_level);
|
||
opts.limit = coerceInteger(opts.limit);
|
||
opts.skip = coerceInteger(opts.skip);
|
||
return opts;
|
||
}
|
||
|
||
function checkPositiveInteger(number) {
|
||
if (number) {
|
||
if (typeof number !== 'number') {
|
||
return new QueryParseError(`Invalid value for integer: "${number}"`);
|
||
}
|
||
if (number < 0) {
|
||
return new QueryParseError(`Invalid value for positive integer: "${number}"`);
|
||
}
|
||
}
|
||
}
|
||
|
||
function checkQueryParseError(options, fun) {
|
||
const startkeyName = options.descending ? 'endkey' : 'startkey';
|
||
const endkeyName = options.descending ? 'startkey' : 'endkey';
|
||
|
||
if (typeof options[startkeyName] !== 'undefined' &&
|
||
typeof options[endkeyName] !== 'undefined' &&
|
||
collate(options[startkeyName], options[endkeyName]) > 0) {
|
||
throw new QueryParseError('No rows can match your key range, ' +
|
||
'reverse your start_key and end_key or set {descending : true}');
|
||
} else if (fun.reduce && options.reduce !== false) {
|
||
if (options.include_docs) {
|
||
throw new QueryParseError('{include_docs:true} is invalid for reduce');
|
||
} else if (options.keys && options.keys.length > 1 &&
|
||
!options.group && !options.group_level) {
|
||
throw new QueryParseError('Multi-key fetches for reduce views must use ' +
|
||
'{group: true}');
|
||
}
|
||
}
|
||
['group_level', 'limit', 'skip'].forEach(function (optionName) {
|
||
const error = checkPositiveInteger(options[optionName]);
|
||
if (error) {
|
||
throw error;
|
||
}
|
||
});
|
||
}
|
||
|
||
async function httpQuery(db, fun, opts) {
|
||
// List of parameters to add to the PUT request
|
||
let params = [];
|
||
let body;
|
||
let method = 'GET';
|
||
let ok;
|
||
|
||
// If opts.reduce exists and is defined, then add it to the list
|
||
// of parameters.
|
||
// If reduce=false then the results are that of only the map function
|
||
// not the final result of map and reduce.
|
||
addHttpParam('reduce', opts, params);
|
||
addHttpParam('include_docs', opts, params);
|
||
addHttpParam('attachments', opts, params);
|
||
addHttpParam('limit', opts, params);
|
||
addHttpParam('descending', opts, params);
|
||
addHttpParam('group', opts, params);
|
||
addHttpParam('group_level', opts, params);
|
||
addHttpParam('skip', opts, params);
|
||
addHttpParam('stale', opts, params);
|
||
addHttpParam('conflicts', opts, params);
|
||
addHttpParam('startkey', opts, params, true);
|
||
addHttpParam('start_key', opts, params, true);
|
||
addHttpParam('endkey', opts, params, true);
|
||
addHttpParam('end_key', opts, params, true);
|
||
addHttpParam('inclusive_end', opts, params);
|
||
addHttpParam('key', opts, params, true);
|
||
addHttpParam('update_seq', opts, params);
|
||
|
||
// Format the list of parameters into a valid URI query string
|
||
params = params.join('&');
|
||
params = params === '' ? '' : '?' + params;
|
||
|
||
// If keys are supplied, issue a POST to circumvent GET query string limits
|
||
// see http://wiki.apache.org/couchdb/HTTP_view_API#Querying_Options
|
||
if (typeof opts.keys !== 'undefined') {
|
||
const MAX_URL_LENGTH = 2000;
|
||
// according to http://stackoverflow.com/a/417184/680742,
|
||
// the de facto URL length limit is 2000 characters
|
||
|
||
const keysAsString = `keys=${encodeURIComponent(JSON.stringify(opts.keys))}`;
|
||
if (keysAsString.length + params.length + 1 <= MAX_URL_LENGTH) {
|
||
// If the keys are short enough, do a GET. we do this to work around
|
||
// Safari not understanding 304s on POSTs (see pouchdb/pouchdb#1239)
|
||
params += (params[0] === '?' ? '&' : '?') + keysAsString;
|
||
} else {
|
||
method = 'POST';
|
||
if (typeof fun === 'string') {
|
||
body = {keys: opts.keys};
|
||
} else { // fun is {map : mapfun}, so append to this
|
||
fun.keys = opts.keys;
|
||
}
|
||
}
|
||
}
|
||
|
||
// We are referencing a query defined in the design doc
|
||
if (typeof fun === 'string') {
|
||
const parts = parseViewName(fun);
|
||
|
||
const response = await db.fetch('_design/' + parts[0] + '/_view/' + parts[1] + params, {
|
||
headers: new h({'Content-Type': 'application/json'}),
|
||
method: method,
|
||
body: JSON.stringify(body)
|
||
});
|
||
ok = response.ok;
|
||
// status = response.status;
|
||
const result = await response.json();
|
||
|
||
if (!ok) {
|
||
result.status = response.status;
|
||
throw generateErrorFromResponse(result);
|
||
}
|
||
|
||
// fail the entire request if the result contains an error
|
||
result.rows.forEach(function (row) {
|
||
/* istanbul ignore if */
|
||
if (row.value && row.value.error && row.value.error === "builtin_reduce_error") {
|
||
throw new Error(row.reason);
|
||
}
|
||
});
|
||
|
||
return new Promise(function (resolve) {
|
||
resolve(result);
|
||
}).then(postprocessAttachments(opts));
|
||
}
|
||
|
||
// We are using a temporary view, terrible for performance, good for testing
|
||
body = body || {};
|
||
Object.keys(fun).forEach(function (key) {
|
||
if (Array.isArray(fun[key])) {
|
||
body[key] = fun[key];
|
||
} else {
|
||
body[key] = fun[key].toString();
|
||
}
|
||
});
|
||
|
||
const response = await db.fetch('_temp_view' + params, {
|
||
headers: new h({'Content-Type': 'application/json'}),
|
||
method: 'POST',
|
||
body: JSON.stringify(body)
|
||
});
|
||
|
||
ok = response.ok;
|
||
// status = response.status;
|
||
const result = await response.json();
|
||
if (!ok) {
|
||
result.status = response.status;
|
||
throw generateErrorFromResponse(result);
|
||
}
|
||
|
||
return new Promise(function (resolve) {
|
||
resolve(result);
|
||
}).then(postprocessAttachments(opts));
|
||
}
|
||
|
||
// custom adapters can define their own api._query
|
||
// and override the default behavior
|
||
/* istanbul ignore next */
|
||
function customQuery(db, fun, opts) {
|
||
return new Promise(function (resolve, reject) {
|
||
db._query(fun, opts, function (err, res) {
|
||
if (err) {
|
||
return reject(err);
|
||
}
|
||
resolve(res);
|
||
});
|
||
});
|
||
}
|
||
|
||
// custom adapters can define their own api._viewCleanup
|
||
// and override the default behavior
|
||
/* istanbul ignore next */
|
||
function customViewCleanup(db) {
|
||
return new Promise(function (resolve, reject) {
|
||
db._viewCleanup(function (err, res) {
|
||
if (err) {
|
||
return reject(err);
|
||
}
|
||
resolve(res);
|
||
});
|
||
});
|
||
}
|
||
|
||
function defaultsTo(value) {
|
||
return function (reason) {
|
||
/* istanbul ignore else */
|
||
if (reason.status === 404) {
|
||
return value;
|
||
} else {
|
||
throw reason;
|
||
}
|
||
};
|
||
}
|
||
|
||
// returns a promise for a list of docs to update, based on the input docId.
|
||
// the order doesn't matter, because post-3.2.0, bulkDocs
|
||
// is an atomic operation in all three adapters.
|
||
async function getDocsToPersist(docId, view, docIdsToChangesAndEmits) {
|
||
const metaDocId = '_local/doc_' + docId;
|
||
const defaultMetaDoc = {_id: metaDocId, keys: []};
|
||
const docData = docIdsToChangesAndEmits.get(docId);
|
||
const indexableKeysToKeyValues = docData[0];
|
||
const changes = docData[1];
|
||
|
||
function getMetaDoc() {
|
||
if (isGenOne(changes)) {
|
||
// generation 1, so we can safely assume initial state
|
||
// for performance reasons (avoids unnecessary GETs)
|
||
return Promise.resolve(defaultMetaDoc);
|
||
}
|
||
return view.db.get(metaDocId).catch(defaultsTo(defaultMetaDoc));
|
||
}
|
||
|
||
function getKeyValueDocs(metaDoc) {
|
||
if (!metaDoc.keys.length) {
|
||
// no keys, no need for a lookup
|
||
return Promise.resolve({rows: []});
|
||
}
|
||
return view.db.allDocs({
|
||
keys: metaDoc.keys,
|
||
include_docs: true
|
||
});
|
||
}
|
||
|
||
function processKeyValueDocs(metaDoc, kvDocsRes) {
|
||
const kvDocs = [];
|
||
const oldKeys = new ExportedSet();
|
||
|
||
for (let i = 0, len = kvDocsRes.rows.length; i < len; i++) {
|
||
const row = kvDocsRes.rows[i];
|
||
const doc = row.doc;
|
||
if (!doc) { // deleted
|
||
continue;
|
||
}
|
||
kvDocs.push(doc);
|
||
oldKeys.add(doc._id);
|
||
doc._deleted = !indexableKeysToKeyValues.has(doc._id);
|
||
if (!doc._deleted) {
|
||
const keyValue = indexableKeysToKeyValues.get(doc._id);
|
||
if ('value' in keyValue) {
|
||
doc.value = keyValue.value;
|
||
}
|
||
}
|
||
}
|
||
const newKeys = mapToKeysArray(indexableKeysToKeyValues);
|
||
newKeys.forEach(function (key) {
|
||
if (!oldKeys.has(key)) {
|
||
// new doc
|
||
const kvDoc = {
|
||
_id: key
|
||
};
|
||
const keyValue = indexableKeysToKeyValues.get(key);
|
||
if ('value' in keyValue) {
|
||
kvDoc.value = keyValue.value;
|
||
}
|
||
kvDocs.push(kvDoc);
|
||
}
|
||
});
|
||
metaDoc.keys = uniq(newKeys.concat(metaDoc.keys));
|
||
kvDocs.push(metaDoc);
|
||
|
||
return kvDocs;
|
||
}
|
||
|
||
const metaDoc = await getMetaDoc();
|
||
const keyValueDocs = await getKeyValueDocs(metaDoc);
|
||
return processKeyValueDocs(metaDoc, keyValueDocs);
|
||
}
|
||
|
||
function updatePurgeSeq(view) {
|
||
// with this approach, we just assume to have processed all missing purges and write the latest
|
||
// purgeSeq into the _local/purgeSeq doc.
|
||
return view.sourceDB.get('_local/purges').then(function (res) {
|
||
const purgeSeq = res.purgeSeq;
|
||
return view.db.get('_local/purgeSeq').then(function (res) {
|
||
return res._rev;
|
||
}).catch(function (err) {
|
||
if (err.status !== 404) {
|
||
throw err;
|
||
}
|
||
return undefined;
|
||
}).then(function (rev) {
|
||
return view.db.put({
|
||
_id: '_local/purgeSeq',
|
||
_rev: rev,
|
||
purgeSeq,
|
||
});
|
||
});
|
||
}).catch(function (err) {
|
||
if (err.status !== 404) {
|
||
throw err;
|
||
}
|
||
});
|
||
}
|
||
|
||
// updates all emitted key/value docs and metaDocs in the mrview database
|
||
// for the given batch of documents from the source database
|
||
function saveKeyValues(view, docIdsToChangesAndEmits, seq) {
|
||
var seqDocId = '_local/lastSeq';
|
||
return view.db.get(seqDocId)
|
||
.catch(defaultsTo({_id: seqDocId, seq: 0}))
|
||
.then(function (lastSeqDoc) {
|
||
var docIds = mapToKeysArray(docIdsToChangesAndEmits);
|
||
return Promise.all(docIds.map(function (docId) {
|
||
return getDocsToPersist(docId, view, docIdsToChangesAndEmits);
|
||
})).then(function (listOfDocsToPersist) {
|
||
var docsToPersist = flatten(listOfDocsToPersist);
|
||
lastSeqDoc.seq = seq;
|
||
docsToPersist.push(lastSeqDoc);
|
||
// write all docs in a single operation, update the seq once
|
||
return view.db.bulkDocs({docs : docsToPersist});
|
||
})
|
||
// TODO: this should be placed somewhere else, probably? we're querying both docs twice
|
||
// (first time when getting the actual purges).
|
||
.then(() => updatePurgeSeq(view));
|
||
});
|
||
}
|
||
|
||
function getQueue(view) {
|
||
const viewName = typeof view === 'string' ? view : view.name;
|
||
let queue = persistentQueues[viewName];
|
||
if (!queue) {
|
||
queue = persistentQueues[viewName] = new TaskQueue$1();
|
||
}
|
||
return queue;
|
||
}
|
||
|
||
async function updateView(view, opts) {
|
||
return sequentialize(getQueue(view), function () {
|
||
return updateViewInQueue(view, opts);
|
||
})();
|
||
}
|
||
|
||
async function updateViewInQueue(view, opts) {
|
||
// bind the emit function once
|
||
let mapResults;
|
||
let doc;
|
||
let taskId;
|
||
|
||
function emit(key, value) {
|
||
const output = {id: doc._id, key: normalizeKey(key)};
|
||
// Don't explicitly store the value unless it's defined and non-null.
|
||
// This saves on storage space, because often people don't use it.
|
||
if (typeof value !== 'undefined' && value !== null) {
|
||
output.value = normalizeKey(value);
|
||
}
|
||
mapResults.push(output);
|
||
}
|
||
|
||
const mapFun = mapper(view.mapFun, emit);
|
||
|
||
let currentSeq = view.seq || 0;
|
||
|
||
function createTask() {
|
||
return view.sourceDB.info().then(function (info) {
|
||
taskId = view.sourceDB.activeTasks.add({
|
||
name: 'view_indexing',
|
||
total_items: info.update_seq - currentSeq,
|
||
});
|
||
});
|
||
}
|
||
|
||
function processChange(docIdsToChangesAndEmits, seq) {
|
||
return function () {
|
||
return saveKeyValues(view, docIdsToChangesAndEmits, seq);
|
||
};
|
||
}
|
||
|
||
let indexed_docs = 0;
|
||
const progress = {
|
||
view: view.name,
|
||
indexed_docs: indexed_docs
|
||
};
|
||
view.sourceDB.emit('indexing', progress);
|
||
|
||
const queue = new TaskQueue$1();
|
||
|
||
async function processNextBatch() {
|
||
const response = await view.sourceDB.changes({
|
||
return_docs: true,
|
||
conflicts: true,
|
||
include_docs: true,
|
||
style: 'all_docs',
|
||
since: currentSeq,
|
||
limit: opts.changes_batch_size
|
||
});
|
||
const purges = await getRecentPurges();
|
||
return processBatch(response, purges);
|
||
}
|
||
|
||
function getRecentPurges() {
|
||
return view.db.get('_local/purgeSeq').then(function (res) {
|
||
return res.purgeSeq;
|
||
}).catch(function (err) {
|
||
if (err && err.status !== 404) {
|
||
throw err;
|
||
}
|
||
return -1;
|
||
}).then(function (purgeSeq) {
|
||
return view.sourceDB.get('_local/purges').then(function (res) {
|
||
const recentPurges = res.purges.filter(function (purge, index) {
|
||
return index > purgeSeq;
|
||
}).map((purge) => purge.docId);
|
||
|
||
const uniquePurges = recentPurges.filter(function (docId, index) {
|
||
return recentPurges.indexOf(docId) === index;
|
||
});
|
||
|
||
return Promise.all(uniquePurges.map(function (docId) {
|
||
return view.sourceDB.get(docId).then(function (doc) {
|
||
return { docId, doc };
|
||
}).catch(function (err) {
|
||
if (err.status !== 404) {
|
||
throw err;
|
||
}
|
||
return { docId };
|
||
});
|
||
}));
|
||
}).catch(function (err) {
|
||
if (err && err.status !== 404) {
|
||
throw err;
|
||
}
|
||
return [];
|
||
});
|
||
});
|
||
}
|
||
|
||
function processBatch(response, purges) {
|
||
var results = response.results;
|
||
if (!results.length && !purges.length) {
|
||
return;
|
||
}
|
||
|
||
for (let purge of purges) {
|
||
const index = results.findIndex(function (change) {
|
||
return change.id === purge.docId;
|
||
});
|
||
if (index < 0) {
|
||
// mimic a db.remove() on the changes feed
|
||
const entry = {
|
||
_id: purge.docId,
|
||
doc: {
|
||
_id: purge.docId,
|
||
_deleted: 1,
|
||
},
|
||
changes: [],
|
||
};
|
||
|
||
if (purge.doc) {
|
||
// update with new winning rev after purge
|
||
entry.doc = purge.doc;
|
||
entry.changes.push({ rev: purge.doc._rev });
|
||
}
|
||
|
||
results.push(entry);
|
||
}
|
||
}
|
||
|
||
var docIdsToChangesAndEmits = createDocIdsToChangesAndEmits(results);
|
||
|
||
queue.add(processChange(docIdsToChangesAndEmits, currentSeq));
|
||
|
||
indexed_docs = indexed_docs + results.length;
|
||
const progress = {
|
||
view: view.name,
|
||
last_seq: response.last_seq,
|
||
results_count: results.length,
|
||
indexed_docs: indexed_docs
|
||
};
|
||
view.sourceDB.emit('indexing', progress);
|
||
view.sourceDB.activeTasks.update(taskId, {completed_items: indexed_docs});
|
||
|
||
if (results.length < opts.changes_batch_size) {
|
||
return;
|
||
}
|
||
return processNextBatch();
|
||
}
|
||
|
||
function createDocIdsToChangesAndEmits(results) {
|
||
const docIdsToChangesAndEmits = new ExportedMap();
|
||
for (let i = 0, len = results.length; i < len; i++) {
|
||
const change = results[i];
|
||
if (change.doc._id[0] !== '_') {
|
||
mapResults = [];
|
||
doc = change.doc;
|
||
|
||
if (!doc._deleted) {
|
||
tryMap(view.sourceDB, mapFun, doc);
|
||
}
|
||
mapResults.sort(sortByKeyThenValue);
|
||
|
||
const indexableKeysToKeyValues = createIndexableKeysToKeyValues(mapResults);
|
||
docIdsToChangesAndEmits.set(change.doc._id, [
|
||
indexableKeysToKeyValues,
|
||
change.changes
|
||
]);
|
||
}
|
||
currentSeq = change.seq;
|
||
}
|
||
return docIdsToChangesAndEmits;
|
||
}
|
||
|
||
function createIndexableKeysToKeyValues(mapResults) {
|
||
const indexableKeysToKeyValues = new ExportedMap();
|
||
let lastKey;
|
||
for (let i = 0, len = mapResults.length; i < len; i++) {
|
||
const emittedKeyValue = mapResults[i];
|
||
const complexKey = [emittedKeyValue.key, emittedKeyValue.id];
|
||
if (i > 0 && collate(emittedKeyValue.key, lastKey) === 0) {
|
||
complexKey.push(i); // dup key+id, so make it unique
|
||
}
|
||
indexableKeysToKeyValues.set(toIndexableString(complexKey), emittedKeyValue);
|
||
lastKey = emittedKeyValue.key;
|
||
}
|
||
return indexableKeysToKeyValues;
|
||
}
|
||
|
||
try {
|
||
await createTask();
|
||
await processNextBatch();
|
||
await queue.finish();
|
||
view.seq = currentSeq;
|
||
view.sourceDB.activeTasks.remove(taskId);
|
||
} catch (error) {
|
||
view.sourceDB.activeTasks.remove(taskId, error);
|
||
}
|
||
}
|
||
|
||
function reduceView(view, results, options) {
|
||
if (options.group_level === 0) {
|
||
delete options.group_level;
|
||
}
|
||
|
||
const shouldGroup = options.group || options.group_level;
|
||
|
||
const reduceFun = reducer(view.reduceFun);
|
||
|
||
const groups = [];
|
||
const lvl = isNaN(options.group_level) ? Number.POSITIVE_INFINITY :
|
||
options.group_level;
|
||
results.forEach(function (e) {
|
||
const last = groups[groups.length - 1];
|
||
let groupKey = shouldGroup ? e.key : null;
|
||
|
||
// only set group_level for array keys
|
||
if (shouldGroup && Array.isArray(groupKey)) {
|
||
groupKey = groupKey.slice(0, lvl);
|
||
}
|
||
|
||
if (last && collate(last.groupKey, groupKey) === 0) {
|
||
last.keys.push([e.key, e.id]);
|
||
last.values.push(e.value);
|
||
return;
|
||
}
|
||
groups.push({
|
||
keys: [[e.key, e.id]],
|
||
values: [e.value],
|
||
groupKey: groupKey
|
||
});
|
||
});
|
||
results = [];
|
||
for (let i = 0, len = groups.length; i < len; i++) {
|
||
const e = groups[i];
|
||
const reduceTry = tryReduce(view.sourceDB, reduceFun, e.keys, e.values, false);
|
||
if (reduceTry.error && reduceTry.error instanceof BuiltInError) {
|
||
// CouchDB returns an error if a built-in errors out
|
||
throw reduceTry.error;
|
||
}
|
||
results.push({
|
||
// CouchDB just sets the value to null if a non-built-in errors out
|
||
value: reduceTry.error ? null : reduceTry.output,
|
||
key: e.groupKey
|
||
});
|
||
}
|
||
// no total_rows/offset when reducing
|
||
return {rows: sliceResults(results, options.limit, options.skip)};
|
||
}
|
||
|
||
function queryView(view, opts) {
|
||
return sequentialize(getQueue(view), function () {
|
||
return queryViewInQueue(view, opts);
|
||
})();
|
||
}
|
||
|
||
async function queryViewInQueue(view, opts) {
|
||
let totalRows;
|
||
const shouldReduce = view.reduceFun && opts.reduce !== false;
|
||
const skip = opts.skip || 0;
|
||
if (typeof opts.keys !== 'undefined' && !opts.keys.length) {
|
||
// equivalent query
|
||
opts.limit = 0;
|
||
delete opts.keys;
|
||
}
|
||
|
||
async function fetchFromView(viewOpts) {
|
||
viewOpts.include_docs = true;
|
||
const res = await view.db.allDocs(viewOpts);
|
||
totalRows = res.total_rows;
|
||
|
||
return res.rows.map(function (result) {
|
||
// implicit migration - in older versions of PouchDB,
|
||
// we explicitly stored the doc as {id: ..., key: ..., value: ...}
|
||
// this is tested in a migration test
|
||
/* istanbul ignore next */
|
||
if ('value' in result.doc && typeof result.doc.value === 'object' &&
|
||
result.doc.value !== null) {
|
||
const keys = Object.keys(result.doc.value).sort();
|
||
// this detection method is not perfect, but it's unlikely the user
|
||
// emitted a value which was an object with these 3 exact keys
|
||
const expectedKeys = ['id', 'key', 'value'];
|
||
if (!(keys < expectedKeys || keys > expectedKeys)) {
|
||
return result.doc.value;
|
||
}
|
||
}
|
||
|
||
const parsedKeyAndDocId = parseIndexableString(result.doc._id);
|
||
return {
|
||
key: parsedKeyAndDocId[0],
|
||
id: parsedKeyAndDocId[1],
|
||
value: ('value' in result.doc ? result.doc.value : null)
|
||
};
|
||
});
|
||
}
|
||
|
||
async function onMapResultsReady(rows) {
|
||
let finalResults;
|
||
if (shouldReduce) {
|
||
finalResults = reduceView(view, rows, opts);
|
||
} else if (typeof opts.keys === 'undefined') {
|
||
finalResults = {
|
||
total_rows: totalRows,
|
||
offset: skip,
|
||
rows: rows
|
||
};
|
||
} else {
|
||
// support limit, skip for keys query
|
||
finalResults = {
|
||
total_rows: totalRows,
|
||
offset: skip,
|
||
rows: sliceResults(rows,opts.limit,opts.skip)
|
||
};
|
||
}
|
||
/* istanbul ignore if */
|
||
if (opts.update_seq) {
|
||
finalResults.update_seq = view.seq;
|
||
}
|
||
if (opts.include_docs) {
|
||
const docIds = uniq(rows.map(rowToDocId));
|
||
|
||
const allDocsRes = await view.sourceDB.allDocs({
|
||
keys: docIds,
|
||
include_docs: true,
|
||
conflicts: opts.conflicts,
|
||
attachments: opts.attachments,
|
||
binary: opts.binary
|
||
});
|
||
var docIdsToDocs = new ExportedMap();
|
||
allDocsRes.rows.forEach(function (row) {
|
||
docIdsToDocs.set(row.id, row.doc);
|
||
});
|
||
rows.forEach(function (row) {
|
||
var docId = rowToDocId(row);
|
||
var doc = docIdsToDocs.get(docId);
|
||
if (doc) {
|
||
row.doc = doc;
|
||
}
|
||
});
|
||
return finalResults;
|
||
} else {
|
||
return finalResults;
|
||
}
|
||
}
|
||
|
||
if (typeof opts.keys !== 'undefined') {
|
||
const keys = opts.keys;
|
||
const fetchPromises = keys.map(function (key) {
|
||
const viewOpts = {
|
||
startkey : toIndexableString([key]),
|
||
endkey : toIndexableString([key, {}])
|
||
};
|
||
/* istanbul ignore if */
|
||
if (opts.update_seq) {
|
||
viewOpts.update_seq = true;
|
||
}
|
||
return fetchFromView(viewOpts);
|
||
});
|
||
const result = await Promise.all(fetchPromises);
|
||
const flattenedResult = flatten(result);
|
||
return onMapResultsReady(flattenedResult);
|
||
} else { // normal query, no 'keys'
|
||
const viewOpts = {
|
||
descending : opts.descending
|
||
};
|
||
/* istanbul ignore if */
|
||
if (opts.update_seq) {
|
||
viewOpts.update_seq = true;
|
||
}
|
||
let startkey;
|
||
let endkey;
|
||
if ('start_key' in opts) {
|
||
startkey = opts.start_key;
|
||
}
|
||
if ('startkey' in opts) {
|
||
startkey = opts.startkey;
|
||
}
|
||
if ('end_key' in opts) {
|
||
endkey = opts.end_key;
|
||
}
|
||
if ('endkey' in opts) {
|
||
endkey = opts.endkey;
|
||
}
|
||
if (typeof startkey !== 'undefined') {
|
||
viewOpts.startkey = opts.descending ?
|
||
toIndexableString([startkey, {}]) :
|
||
toIndexableString([startkey]);
|
||
}
|
||
if (typeof endkey !== 'undefined') {
|
||
let inclusiveEnd = opts.inclusive_end !== false;
|
||
if (opts.descending) {
|
||
inclusiveEnd = !inclusiveEnd;
|
||
}
|
||
|
||
viewOpts.endkey = toIndexableString(
|
||
inclusiveEnd ? [endkey, {}] : [endkey]);
|
||
}
|
||
if (typeof opts.key !== 'undefined') {
|
||
const keyStart = toIndexableString([opts.key]);
|
||
const keyEnd = toIndexableString([opts.key, {}]);
|
||
if (viewOpts.descending) {
|
||
viewOpts.endkey = keyStart;
|
||
viewOpts.startkey = keyEnd;
|
||
} else {
|
||
viewOpts.startkey = keyStart;
|
||
viewOpts.endkey = keyEnd;
|
||
}
|
||
}
|
||
if (!shouldReduce) {
|
||
if (typeof opts.limit === 'number') {
|
||
viewOpts.limit = opts.limit;
|
||
}
|
||
viewOpts.skip = skip;
|
||
}
|
||
|
||
const result = await fetchFromView(viewOpts);
|
||
return onMapResultsReady(result);
|
||
}
|
||
}
|
||
|
||
async function httpViewCleanup(db) {
|
||
const response = await db.fetch('_view_cleanup', {
|
||
headers: new h({'Content-Type': 'application/json'}),
|
||
method: 'POST'
|
||
});
|
||
return response.json();
|
||
}
|
||
|
||
async function localViewCleanup(db) {
|
||
try {
|
||
const metaDoc = await db.get('_local/' + localDocName);
|
||
const docsToViews = new ExportedMap();
|
||
|
||
Object.keys(metaDoc.views).forEach(function (fullViewName) {
|
||
const parts = parseViewName(fullViewName);
|
||
const designDocName = '_design/' + parts[0];
|
||
const viewName = parts[1];
|
||
let views = docsToViews.get(designDocName);
|
||
if (!views) {
|
||
views = new ExportedSet();
|
||
docsToViews.set(designDocName, views);
|
||
}
|
||
views.add(viewName);
|
||
});
|
||
const opts = {
|
||
keys : mapToKeysArray(docsToViews),
|
||
include_docs : true
|
||
};
|
||
|
||
const res = await db.allDocs(opts);
|
||
const viewsToStatus = {};
|
||
res.rows.forEach(function (row) {
|
||
const ddocName = row.key.substring(8); // cuts off '_design/'
|
||
docsToViews.get(row.key).forEach(function (viewName) {
|
||
let fullViewName = ddocName + '/' + viewName;
|
||
/* istanbul ignore if */
|
||
if (!metaDoc.views[fullViewName]) {
|
||
// new format, without slashes, to support PouchDB 2.2.0
|
||
// migration test in pouchdb's browser.migration.js verifies this
|
||
fullViewName = viewName;
|
||
}
|
||
const viewDBNames = Object.keys(metaDoc.views[fullViewName]);
|
||
// design doc deleted, or view function nonexistent
|
||
const statusIsGood = row.doc && row.doc.views &&
|
||
row.doc.views[viewName];
|
||
viewDBNames.forEach(function (viewDBName) {
|
||
viewsToStatus[viewDBName] =
|
||
viewsToStatus[viewDBName] || statusIsGood;
|
||
});
|
||
});
|
||
});
|
||
|
||
const dbsToDelete = Object.keys(viewsToStatus)
|
||
.filter(function (viewDBName) { return !viewsToStatus[viewDBName]; });
|
||
|
||
const destroyPromises = dbsToDelete.map(function (viewDBName) {
|
||
return sequentialize(getQueue(viewDBName), function () {
|
||
return new db.constructor(viewDBName, db.__opts).destroy();
|
||
})();
|
||
});
|
||
|
||
return Promise.all(destroyPromises).then(function () {
|
||
return {ok: true};
|
||
});
|
||
} catch (err) {
|
||
if (err.status === 404) {
|
||
return {ok: true};
|
||
} else {
|
||
throw err;
|
||
}
|
||
}
|
||
}
|
||
|
||
async function queryPromised(db, fun, opts) {
|
||
/* istanbul ignore next */
|
||
if (typeof db._query === 'function') {
|
||
return customQuery(db, fun, opts);
|
||
}
|
||
if (isRemote(db)) {
|
||
return httpQuery(db, fun, opts);
|
||
}
|
||
|
||
const updateViewOpts = {
|
||
changes_batch_size: db.__opts.view_update_changes_batch_size || CHANGES_BATCH_SIZE$1
|
||
};
|
||
|
||
if (typeof fun !== 'string') {
|
||
// temp_view
|
||
checkQueryParseError(opts, fun);
|
||
|
||
tempViewQueue.add(async function () {
|
||
const view = await createView(
|
||
/* sourceDB */ db,
|
||
/* viewName */ 'temp_view/temp_view',
|
||
/* mapFun */ fun.map,
|
||
/* reduceFun */ fun.reduce,
|
||
/* temporary */ true,
|
||
/* localDocName */ localDocName);
|
||
|
||
return fin(updateView(view, updateViewOpts).then(
|
||
function () { return queryView(view, opts); }),
|
||
function () { return view.db.destroy(); }
|
||
);
|
||
});
|
||
return tempViewQueue.finish();
|
||
} else {
|
||
// persistent view
|
||
const fullViewName = fun;
|
||
const parts = parseViewName(fullViewName);
|
||
const designDocName = parts[0];
|
||
const viewName = parts[1];
|
||
|
||
const doc = await db.get('_design/' + designDocName);
|
||
fun = doc.views && doc.views[viewName];
|
||
|
||
if (!fun) {
|
||
// basic validator; it's assumed that every subclass would want this
|
||
throw new NotFoundError(`ddoc ${doc._id} has no view named ${viewName}`);
|
||
}
|
||
|
||
ddocValidator(doc, viewName);
|
||
checkQueryParseError(opts, fun);
|
||
|
||
const view = await createView(
|
||
/* sourceDB */ db,
|
||
/* viewName */ fullViewName,
|
||
/* mapFun */ fun.map,
|
||
/* reduceFun */ fun.reduce,
|
||
/* temporary */ false,
|
||
/* localDocName */ localDocName);
|
||
|
||
if (opts.stale === 'ok' || opts.stale === 'update_after') {
|
||
if (opts.stale === 'update_after') {
|
||
immediate(function () {
|
||
updateView(view, updateViewOpts);
|
||
});
|
||
}
|
||
return queryView(view, opts);
|
||
} else { // stale not ok
|
||
await updateView(view, updateViewOpts);
|
||
return queryView(view, opts);
|
||
}
|
||
}
|
||
}
|
||
|
||
function abstractQuery(fun, opts, callback) {
|
||
const db = this;
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
opts = opts ? coerceOptions(opts) : {};
|
||
|
||
if (typeof fun === 'function') {
|
||
fun = {map : fun};
|
||
}
|
||
|
||
const promise = Promise.resolve().then(function () {
|
||
return queryPromised(db, fun, opts);
|
||
});
|
||
promisedCallback(promise, callback);
|
||
return promise;
|
||
}
|
||
|
||
const abstractViewCleanup = callbackify(function () {
|
||
const db = this;
|
||
/* istanbul ignore next */
|
||
if (typeof db._viewCleanup === 'function') {
|
||
return customViewCleanup(db);
|
||
}
|
||
if (isRemote(db)) {
|
||
return httpViewCleanup(db);
|
||
}
|
||
return localViewCleanup(db);
|
||
});
|
||
|
||
return {
|
||
query: abstractQuery,
|
||
viewCleanup: abstractViewCleanup
|
||
};
|
||
}
|
||
|
||
var builtInReduce = {
|
||
_sum: function (keys, values) {
|
||
return sum(values);
|
||
},
|
||
|
||
_count: function (keys, values) {
|
||
return values.length;
|
||
},
|
||
|
||
_stats: function (keys, values) {
|
||
// no need to implement rereduce=true, because Pouch
|
||
// will never call it
|
||
function sumsqr(values) {
|
||
var _sumsqr = 0;
|
||
for (var i = 0, len = values.length; i < len; i++) {
|
||
var num = values[i];
|
||
_sumsqr += (num * num);
|
||
}
|
||
return _sumsqr;
|
||
}
|
||
return {
|
||
sum : sum(values),
|
||
min : Math.min.apply(null, values),
|
||
max : Math.max.apply(null, values),
|
||
count : values.length,
|
||
sumsqr : sumsqr(values)
|
||
};
|
||
}
|
||
};
|
||
|
||
function getBuiltIn(reduceFunString) {
|
||
if (/^_sum/.test(reduceFunString)) {
|
||
return builtInReduce._sum;
|
||
} else if (/^_count/.test(reduceFunString)) {
|
||
return builtInReduce._count;
|
||
} else if (/^_stats/.test(reduceFunString)) {
|
||
return builtInReduce._stats;
|
||
} else if (/^_/.test(reduceFunString)) {
|
||
throw new Error(reduceFunString + ' is not a supported reduce function.');
|
||
}
|
||
}
|
||
|
||
function mapper(mapFun, emit) {
|
||
// for temp_views one can use emit(doc, emit), see #38
|
||
if (typeof mapFun === "function" && mapFun.length === 2) {
|
||
var origMap = mapFun;
|
||
return function (doc) {
|
||
return origMap(doc, emit);
|
||
};
|
||
} else {
|
||
return evalFunctionWithEval(mapFun.toString(), emit);
|
||
}
|
||
}
|
||
|
||
function reducer(reduceFun) {
|
||
var reduceFunString = reduceFun.toString();
|
||
var builtIn = getBuiltIn(reduceFunString);
|
||
if (builtIn) {
|
||
return builtIn;
|
||
} else {
|
||
return evalFunctionWithEval(reduceFunString);
|
||
}
|
||
}
|
||
|
||
function ddocValidator(ddoc, viewName) {
|
||
var fun = ddoc.views && ddoc.views[viewName];
|
||
if (typeof fun.map !== 'string') {
|
||
throw new NotFoundError('ddoc ' + ddoc._id + ' has no string view named ' +
|
||
viewName + ', instead found object of type: ' + typeof fun.map);
|
||
}
|
||
}
|
||
|
||
var localDocName = 'mrviews';
|
||
var abstract = createAbstractMapReduce(localDocName, mapper, reducer, ddocValidator);
|
||
|
||
function query(fun, opts, callback) {
|
||
return abstract.query.call(this, fun, opts, callback);
|
||
}
|
||
|
||
function viewCleanup(callback) {
|
||
return abstract.viewCleanup.call(this, callback);
|
||
}
|
||
|
||
var mapreduce = {
|
||
query: query,
|
||
viewCleanup: viewCleanup
|
||
};
|
||
|
||
function fileHasChanged(localDoc, remoteDoc, filename) {
|
||
return !localDoc._attachments ||
|
||
!localDoc._attachments[filename] ||
|
||
localDoc._attachments[filename].digest !== remoteDoc._attachments[filename].digest;
|
||
}
|
||
|
||
function getDocAttachments(db, doc) {
|
||
var filenames = Object.keys(doc._attachments);
|
||
return Promise.all(filenames.map(function (filename) {
|
||
return db.getAttachment(doc._id, filename, {rev: doc._rev});
|
||
}));
|
||
}
|
||
|
||
function getDocAttachmentsFromTargetOrSource(target, src, doc) {
|
||
var doCheckForLocalAttachments = isRemote(src) && !isRemote(target);
|
||
var filenames = Object.keys(doc._attachments);
|
||
|
||
if (!doCheckForLocalAttachments) {
|
||
return getDocAttachments(src, doc);
|
||
}
|
||
|
||
return target.get(doc._id).then(function (localDoc) {
|
||
return Promise.all(filenames.map(function (filename) {
|
||
if (fileHasChanged(localDoc, doc, filename)) {
|
||
return src.getAttachment(doc._id, filename);
|
||
}
|
||
|
||
return target.getAttachment(localDoc._id, filename);
|
||
}));
|
||
}).catch(function (error) {
|
||
/* istanbul ignore if */
|
||
if (error.status !== 404) {
|
||
throw error;
|
||
}
|
||
|
||
return getDocAttachments(src, doc);
|
||
});
|
||
}
|
||
|
||
function createBulkGetOpts(diffs) {
|
||
var requests = [];
|
||
Object.keys(diffs).forEach(function (id) {
|
||
var missingRevs = diffs[id].missing;
|
||
missingRevs.forEach(function (missingRev) {
|
||
requests.push({
|
||
id: id,
|
||
rev: missingRev
|
||
});
|
||
});
|
||
});
|
||
|
||
return {
|
||
docs: requests,
|
||
revs: true,
|
||
latest: true
|
||
};
|
||
}
|
||
|
||
//
|
||
// Fetch all the documents from the src as described in the "diffs",
|
||
// which is a mapping of docs IDs to revisions. If the state ever
|
||
// changes to "cancelled", then the returned promise will be rejected.
|
||
// Else it will be resolved with a list of fetched documents.
|
||
//
|
||
function getDocs(src, target, diffs, state) {
|
||
diffs = clone(diffs); // we do not need to modify this
|
||
|
||
var resultDocs = [],
|
||
ok = true;
|
||
|
||
function getAllDocs() {
|
||
|
||
var bulkGetOpts = createBulkGetOpts(diffs);
|
||
|
||
if (!bulkGetOpts.docs.length) { // optimization: skip empty requests
|
||
return;
|
||
}
|
||
|
||
return src.bulkGet(bulkGetOpts).then(function (bulkGetResponse) {
|
||
/* istanbul ignore if */
|
||
if (state.cancelled) {
|
||
throw new Error('cancelled');
|
||
}
|
||
return Promise.all(bulkGetResponse.results.map(function (bulkGetInfo) {
|
||
return Promise.all(bulkGetInfo.docs.map(function (doc) {
|
||
var remoteDoc = doc.ok;
|
||
|
||
if (doc.error) {
|
||
// when AUTO_COMPACTION is set, docs can be returned which look
|
||
// like this: {"missing":"1-7c3ac256b693c462af8442f992b83696"}
|
||
ok = false;
|
||
}
|
||
|
||
if (!remoteDoc || !remoteDoc._attachments) {
|
||
return remoteDoc;
|
||
}
|
||
|
||
return getDocAttachmentsFromTargetOrSource(target, src, remoteDoc)
|
||
.then(function (attachments) {
|
||
var filenames = Object.keys(remoteDoc._attachments);
|
||
attachments
|
||
.forEach(function (attachment, i) {
|
||
var att = remoteDoc._attachments[filenames[i]];
|
||
delete att.stub;
|
||
delete att.length;
|
||
att.data = attachment;
|
||
});
|
||
|
||
return remoteDoc;
|
||
});
|
||
}));
|
||
}))
|
||
|
||
.then(function (results) {
|
||
resultDocs = resultDocs.concat(flatten(results).filter(Boolean));
|
||
});
|
||
});
|
||
}
|
||
|
||
function returnResult() {
|
||
return { ok:ok, docs:resultDocs };
|
||
}
|
||
|
||
return Promise.resolve()
|
||
.then(getAllDocs)
|
||
.then(returnResult);
|
||
}
|
||
|
||
var CHECKPOINT_VERSION = 1;
|
||
var REPLICATOR = "pouchdb";
|
||
// This is an arbitrary number to limit the
|
||
// amount of replication history we save in the checkpoint.
|
||
// If we save too much, the checkpoing docs will become very big,
|
||
// if we save fewer, we'll run a greater risk of having to
|
||
// read all the changes from 0 when checkpoint PUTs fail
|
||
// CouchDB 2.0 has a more involved history pruning,
|
||
// but let's go for the simple version for now.
|
||
var CHECKPOINT_HISTORY_SIZE = 5;
|
||
var LOWEST_SEQ = 0;
|
||
|
||
function updateCheckpoint(db, id, checkpoint, session, returnValue) {
|
||
return db.get(id).catch(function (err) {
|
||
if (err.status === 404) {
|
||
if (db.adapter === 'http' || db.adapter === 'https') {
|
||
explainError(
|
||
404, 'PouchDB is just checking if a remote checkpoint exists.'
|
||
);
|
||
}
|
||
return {
|
||
session_id: session,
|
||
_id: id,
|
||
history: [],
|
||
replicator: REPLICATOR,
|
||
version: CHECKPOINT_VERSION
|
||
};
|
||
}
|
||
throw err;
|
||
}).then(function (doc) {
|
||
if (returnValue.cancelled) {
|
||
return;
|
||
}
|
||
|
||
// if the checkpoint has not changed, do not update
|
||
if (doc.last_seq === checkpoint) {
|
||
return;
|
||
}
|
||
|
||
// Filter out current entry for this replication
|
||
doc.history = (doc.history || []).filter(function (item) {
|
||
return item.session_id !== session;
|
||
});
|
||
|
||
// Add the latest checkpoint to history
|
||
doc.history.unshift({
|
||
last_seq: checkpoint,
|
||
session_id: session
|
||
});
|
||
|
||
// Just take the last pieces in history, to
|
||
// avoid really big checkpoint docs.
|
||
// see comment on history size above
|
||
doc.history = doc.history.slice(0, CHECKPOINT_HISTORY_SIZE);
|
||
|
||
doc.version = CHECKPOINT_VERSION;
|
||
doc.replicator = REPLICATOR;
|
||
|
||
doc.session_id = session;
|
||
doc.last_seq = checkpoint;
|
||
|
||
return db.put(doc).catch(function (err) {
|
||
if (err.status === 409) {
|
||
// retry; someone is trying to write a checkpoint simultaneously
|
||
return updateCheckpoint(db, id, checkpoint, session, returnValue);
|
||
}
|
||
throw err;
|
||
});
|
||
});
|
||
}
|
||
|
||
class CheckpointerInternal {
|
||
constructor(src, target, id, returnValue, opts) {
|
||
this.src = src;
|
||
this.target = target;
|
||
this.id = id;
|
||
this.returnValue = returnValue;
|
||
this.opts = opts || {};
|
||
}
|
||
|
||
writeCheckpoint(checkpoint, session) {
|
||
var self = this;
|
||
return this.updateTarget(checkpoint, session).then(function () {
|
||
return self.updateSource(checkpoint, session);
|
||
});
|
||
}
|
||
|
||
updateTarget(checkpoint, session) {
|
||
if (this.opts.writeTargetCheckpoint) {
|
||
return updateCheckpoint(this.target, this.id, checkpoint,
|
||
session, this.returnValue);
|
||
} else {
|
||
return Promise.resolve(true);
|
||
}
|
||
}
|
||
|
||
updateSource(checkpoint, session) {
|
||
if (this.opts.writeSourceCheckpoint) {
|
||
var self = this;
|
||
return updateCheckpoint(this.src, this.id, checkpoint,
|
||
session, this.returnValue)
|
||
.catch(function (err) {
|
||
if (isForbiddenError(err)) {
|
||
self.opts.writeSourceCheckpoint = false;
|
||
return true;
|
||
}
|
||
throw err;
|
||
});
|
||
} else {
|
||
return Promise.resolve(true);
|
||
}
|
||
}
|
||
|
||
getCheckpoint() {
|
||
var self = this;
|
||
|
||
if (self.opts && self.opts.writeSourceCheckpoint && !self.opts.writeTargetCheckpoint) {
|
||
return self.src.get(self.id).then(function (sourceDoc) {
|
||
return sourceDoc.last_seq || LOWEST_SEQ;
|
||
}).catch(function (err) {
|
||
/* istanbul ignore if */
|
||
if (err.status !== 404) {
|
||
throw err;
|
||
}
|
||
return LOWEST_SEQ;
|
||
});
|
||
}
|
||
|
||
return self.target.get(self.id).then(function (targetDoc) {
|
||
if (self.opts && self.opts.writeTargetCheckpoint && !self.opts.writeSourceCheckpoint) {
|
||
return targetDoc.last_seq || LOWEST_SEQ;
|
||
}
|
||
|
||
return self.src.get(self.id).then(function (sourceDoc) {
|
||
// Since we can't migrate an old version doc to a new one
|
||
// (no session id), we just go with the lowest seq in this case
|
||
/* istanbul ignore if */
|
||
if (targetDoc.version !== sourceDoc.version) {
|
||
return LOWEST_SEQ;
|
||
}
|
||
|
||
var version;
|
||
if (targetDoc.version) {
|
||
version = targetDoc.version.toString();
|
||
} else {
|
||
version = "undefined";
|
||
}
|
||
|
||
if (version in comparisons) {
|
||
return comparisons[version](targetDoc, sourceDoc);
|
||
}
|
||
/* istanbul ignore next */
|
||
return LOWEST_SEQ;
|
||
}, function (err) {
|
||
if (err.status === 404 && targetDoc.last_seq) {
|
||
return self.src.put({
|
||
_id: self.id,
|
||
last_seq: LOWEST_SEQ
|
||
}).then(function () {
|
||
return LOWEST_SEQ;
|
||
}, function (err) {
|
||
if (isForbiddenError(err)) {
|
||
self.opts.writeSourceCheckpoint = false;
|
||
return targetDoc.last_seq;
|
||
}
|
||
/* istanbul ignore next */
|
||
return LOWEST_SEQ;
|
||
});
|
||
}
|
||
throw err;
|
||
});
|
||
}).catch(function (err) {
|
||
if (err.status !== 404) {
|
||
throw err;
|
||
}
|
||
return LOWEST_SEQ;
|
||
});
|
||
}
|
||
}
|
||
|
||
var comparisons = {
|
||
"undefined": function (targetDoc, sourceDoc) {
|
||
// This is the previous comparison function
|
||
if (collate(targetDoc.last_seq, sourceDoc.last_seq) === 0) {
|
||
return sourceDoc.last_seq;
|
||
}
|
||
/* istanbul ignore next */
|
||
return 0;
|
||
},
|
||
"1": function (targetDoc, sourceDoc) {
|
||
// This is the comparison function ported from CouchDB
|
||
return compareReplicationLogs(sourceDoc, targetDoc).last_seq;
|
||
}
|
||
};
|
||
|
||
// This checkpoint comparison is ported from CouchDBs source
|
||
// they come from here:
|
||
// https://github.com/apache/couchdb-couch-replicator/blob/master/src/couch_replicator.erl#L863-L906
|
||
|
||
function compareReplicationLogs(srcDoc, tgtDoc) {
|
||
if (srcDoc.session_id === tgtDoc.session_id) {
|
||
return {
|
||
last_seq: srcDoc.last_seq,
|
||
history: srcDoc.history
|
||
};
|
||
}
|
||
|
||
return compareReplicationHistory(srcDoc.history, tgtDoc.history);
|
||
}
|
||
|
||
function compareReplicationHistory(sourceHistory, targetHistory) {
|
||
// the erlang loop via function arguments is not so easy to repeat in JS
|
||
// therefore, doing this as recursion
|
||
var S = sourceHistory[0];
|
||
var sourceRest = sourceHistory.slice(1);
|
||
var T = targetHistory[0];
|
||
var targetRest = targetHistory.slice(1);
|
||
|
||
if (!S || targetHistory.length === 0) {
|
||
return {
|
||
last_seq: LOWEST_SEQ,
|
||
history: []
|
||
};
|
||
}
|
||
|
||
var sourceId = S.session_id;
|
||
/* istanbul ignore if */
|
||
if (hasSessionId(sourceId, targetHistory)) {
|
||
return {
|
||
last_seq: S.last_seq,
|
||
history: sourceHistory
|
||
};
|
||
}
|
||
|
||
var targetId = T.session_id;
|
||
if (hasSessionId(targetId, sourceRest)) {
|
||
return {
|
||
last_seq: T.last_seq,
|
||
history: targetRest
|
||
};
|
||
}
|
||
|
||
return compareReplicationHistory(sourceRest, targetRest);
|
||
}
|
||
|
||
function hasSessionId(sessionId, history) {
|
||
var props = history[0];
|
||
var rest = history.slice(1);
|
||
|
||
if (!sessionId || history.length === 0) {
|
||
return false;
|
||
}
|
||
|
||
if (sessionId === props.session_id) {
|
||
return true;
|
||
}
|
||
|
||
return hasSessionId(sessionId, rest);
|
||
}
|
||
|
||
function isForbiddenError(err) {
|
||
return typeof err.status === 'number' && Math.floor(err.status / 100) === 4;
|
||
}
|
||
|
||
function Checkpointer(src, target, id, returnValue, opts) {
|
||
if (!(this instanceof CheckpointerInternal)) {
|
||
return new CheckpointerInternal(src, target, id, returnValue, opts);
|
||
}
|
||
return Checkpointer;
|
||
}
|
||
|
||
var STARTING_BACK_OFF = 0;
|
||
|
||
function backOff(opts, returnValue, error, callback) {
|
||
if (opts.retry === false) {
|
||
returnValue.emit('error', error);
|
||
returnValue.removeAllListeners();
|
||
return;
|
||
}
|
||
/* istanbul ignore if */
|
||
if (typeof opts.back_off_function !== 'function') {
|
||
opts.back_off_function = defaultBackOff;
|
||
}
|
||
returnValue.emit('requestError', error);
|
||
if (returnValue.state === 'active' || returnValue.state === 'pending') {
|
||
returnValue.emit('paused', error);
|
||
returnValue.state = 'stopped';
|
||
var backOffSet = function backoffTimeSet() {
|
||
opts.current_back_off = STARTING_BACK_OFF;
|
||
};
|
||
var removeBackOffSetter = function removeBackOffTimeSet() {
|
||
returnValue.removeListener('active', backOffSet);
|
||
};
|
||
returnValue.once('paused', removeBackOffSetter);
|
||
returnValue.once('active', backOffSet);
|
||
}
|
||
|
||
opts.current_back_off = opts.current_back_off || STARTING_BACK_OFF;
|
||
opts.current_back_off = opts.back_off_function(opts.current_back_off);
|
||
setTimeout(callback, opts.current_back_off);
|
||
}
|
||
|
||
function sortObjectPropertiesByKey(queryParams) {
|
||
return Object.keys(queryParams).sort(collate).reduce(function (result, key) {
|
||
result[key] = queryParams[key];
|
||
return result;
|
||
}, {});
|
||
}
|
||
|
||
// Generate a unique id particular to this replication.
|
||
// Not guaranteed to align perfectly with CouchDB's rep ids.
|
||
function generateReplicationId(src, target, opts) {
|
||
var docIds = opts.doc_ids ? opts.doc_ids.sort(collate) : '';
|
||
var filterFun = opts.filter ? opts.filter.toString() : '';
|
||
var queryParams = '';
|
||
var filterViewName = '';
|
||
var selector = '';
|
||
|
||
// possibility for checkpoints to be lost here as behaviour of
|
||
// JSON.stringify is not stable (see #6226)
|
||
/* istanbul ignore if */
|
||
if (opts.selector) {
|
||
selector = JSON.stringify(opts.selector);
|
||
}
|
||
|
||
if (opts.filter && opts.query_params) {
|
||
queryParams = JSON.stringify(sortObjectPropertiesByKey(opts.query_params));
|
||
}
|
||
|
||
if (opts.filter && opts.filter === '_view') {
|
||
filterViewName = opts.view.toString();
|
||
}
|
||
|
||
return Promise.all([src.id(), target.id()]).then(function (res) {
|
||
var queryData = res[0] + res[1] + filterFun + filterViewName +
|
||
queryParams + docIds + selector;
|
||
return new Promise(function (resolve) {
|
||
binaryMd5(queryData, resolve);
|
||
});
|
||
}).then(function (md5sum) {
|
||
// can't use straight-up md5 alphabet, because
|
||
// the char '/' is interpreted as being for attachments,
|
||
// and + is also not url-safe
|
||
md5sum = md5sum.replace(/\//g, '.').replace(/\+/g, '_');
|
||
return '_local/' + md5sum;
|
||
});
|
||
}
|
||
|
||
function replicate(src, target, opts, returnValue, result) {
|
||
var batches = []; // list of batches to be processed
|
||
var currentBatch; // the batch currently being processed
|
||
var pendingBatch = {
|
||
seq: 0,
|
||
changes: [],
|
||
docs: []
|
||
}; // next batch, not yet ready to be processed
|
||
var writingCheckpoint = false; // true while checkpoint is being written
|
||
var changesCompleted = false; // true when all changes received
|
||
var replicationCompleted = false; // true when replication has completed
|
||
// initial_last_seq is the state of the source db before
|
||
// replication started, and it is _not_ updated during
|
||
// replication or used anywhere else, as opposed to last_seq
|
||
var initial_last_seq = 0;
|
||
var last_seq = 0;
|
||
var continuous = opts.continuous || opts.live || false;
|
||
var batch_size = opts.batch_size || 100;
|
||
var batches_limit = opts.batches_limit || 10;
|
||
var style = opts.style || 'all_docs';
|
||
var changesPending = false; // true while src.changes is running
|
||
var doc_ids = opts.doc_ids;
|
||
var selector = opts.selector;
|
||
var repId;
|
||
var checkpointer;
|
||
var changedDocs = [];
|
||
// Like couchdb, every replication gets a unique session id
|
||
var session = uuid();
|
||
var taskId;
|
||
|
||
result = result || {
|
||
ok: true,
|
||
start_time: new Date().toISOString(),
|
||
docs_read: 0,
|
||
docs_written: 0,
|
||
doc_write_failures: 0,
|
||
errors: []
|
||
};
|
||
|
||
var changesOpts = {};
|
||
returnValue.ready(src, target);
|
||
|
||
function initCheckpointer() {
|
||
if (checkpointer) {
|
||
return Promise.resolve();
|
||
}
|
||
return generateReplicationId(src, target, opts).then(function (res) {
|
||
repId = res;
|
||
|
||
var checkpointOpts = {};
|
||
if (opts.checkpoint === false) {
|
||
checkpointOpts = { writeSourceCheckpoint: false, writeTargetCheckpoint: false };
|
||
} else if (opts.checkpoint === 'source') {
|
||
checkpointOpts = { writeSourceCheckpoint: true, writeTargetCheckpoint: false };
|
||
} else if (opts.checkpoint === 'target') {
|
||
checkpointOpts = { writeSourceCheckpoint: false, writeTargetCheckpoint: true };
|
||
} else {
|
||
checkpointOpts = { writeSourceCheckpoint: true, writeTargetCheckpoint: true };
|
||
}
|
||
|
||
checkpointer = new Checkpointer(src, target, repId, returnValue, checkpointOpts);
|
||
});
|
||
}
|
||
|
||
function writeDocs() {
|
||
changedDocs = [];
|
||
|
||
if (currentBatch.docs.length === 0) {
|
||
return;
|
||
}
|
||
var docs = currentBatch.docs;
|
||
var bulkOpts = {timeout: opts.timeout};
|
||
return target.bulkDocs({docs: docs, new_edits: false}, bulkOpts).then(function (res) {
|
||
/* istanbul ignore if */
|
||
if (returnValue.cancelled) {
|
||
completeReplication();
|
||
throw new Error('cancelled');
|
||
}
|
||
|
||
// `res` doesn't include full documents (which live in `docs`), so we create a map of
|
||
// (id -> error), and check for errors while iterating over `docs`
|
||
var errorsById = Object.create(null);
|
||
res.forEach(function (res) {
|
||
if (res.error) {
|
||
errorsById[res.id] = res;
|
||
}
|
||
});
|
||
|
||
var errorsNo = Object.keys(errorsById).length;
|
||
result.doc_write_failures += errorsNo;
|
||
result.docs_written += docs.length - errorsNo;
|
||
|
||
docs.forEach(function (doc) {
|
||
var error = errorsById[doc._id];
|
||
if (error) {
|
||
result.errors.push(error);
|
||
// Normalize error name. i.e. 'Unauthorized' -> 'unauthorized' (eg Sync Gateway)
|
||
var errorName = (error.name || '').toLowerCase();
|
||
if (errorName === 'unauthorized' || errorName === 'forbidden') {
|
||
returnValue.emit('denied', clone(error));
|
||
} else {
|
||
throw error;
|
||
}
|
||
} else {
|
||
changedDocs.push(doc);
|
||
}
|
||
});
|
||
|
||
}, function (err) {
|
||
result.doc_write_failures += docs.length;
|
||
throw err;
|
||
});
|
||
}
|
||
|
||
function finishBatch() {
|
||
if (currentBatch.error) {
|
||
throw new Error('There was a problem getting docs.');
|
||
}
|
||
result.last_seq = last_seq = currentBatch.seq;
|
||
var outResult = clone(result);
|
||
if (changedDocs.length) {
|
||
outResult.docs = changedDocs;
|
||
// Attach 'pending' property if server supports it (CouchDB 2.0+)
|
||
/* istanbul ignore if */
|
||
if (typeof currentBatch.pending === 'number') {
|
||
outResult.pending = currentBatch.pending;
|
||
delete currentBatch.pending;
|
||
}
|
||
returnValue.emit('change', outResult);
|
||
}
|
||
writingCheckpoint = true;
|
||
|
||
src.info().then(function (info) {
|
||
var task = src.activeTasks.get(taskId);
|
||
if (!currentBatch || !task) {
|
||
return;
|
||
}
|
||
|
||
var completed = task.completed_items || 0;
|
||
var total_items = parseInt(info.update_seq, 10) - parseInt(initial_last_seq, 10);
|
||
src.activeTasks.update(taskId, {
|
||
completed_items: completed + currentBatch.changes.length,
|
||
total_items
|
||
});
|
||
});
|
||
|
||
return checkpointer.writeCheckpoint(currentBatch.seq,
|
||
session).then(function () {
|
||
returnValue.emit('checkpoint', { 'checkpoint': currentBatch.seq });
|
||
writingCheckpoint = false;
|
||
/* istanbul ignore if */
|
||
if (returnValue.cancelled) {
|
||
completeReplication();
|
||
throw new Error('cancelled');
|
||
}
|
||
currentBatch = undefined;
|
||
getChanges();
|
||
}).catch(function (err) {
|
||
onCheckpointError(err);
|
||
throw err;
|
||
});
|
||
}
|
||
|
||
function getDiffs() {
|
||
var diff = {};
|
||
currentBatch.changes.forEach(function (change) {
|
||
returnValue.emit('checkpoint', { 'revs_diff': change });
|
||
// Couchbase Sync Gateway emits these, but we can ignore them
|
||
/* istanbul ignore if */
|
||
if (change.id === "_user/") {
|
||
return;
|
||
}
|
||
diff[change.id] = change.changes.map(function (x) {
|
||
return x.rev;
|
||
});
|
||
});
|
||
return target.revsDiff(diff).then(function (diffs) {
|
||
/* istanbul ignore if */
|
||
if (returnValue.cancelled) {
|
||
completeReplication();
|
||
throw new Error('cancelled');
|
||
}
|
||
// currentBatch.diffs elements are deleted as the documents are written
|
||
currentBatch.diffs = diffs;
|
||
});
|
||
}
|
||
|
||
function getBatchDocs() {
|
||
return getDocs(src, target, currentBatch.diffs, returnValue).then(function (got) {
|
||
currentBatch.error = !got.ok;
|
||
got.docs.forEach(function (doc) {
|
||
delete currentBatch.diffs[doc._id];
|
||
result.docs_read++;
|
||
currentBatch.docs.push(doc);
|
||
});
|
||
});
|
||
}
|
||
|
||
function startNextBatch() {
|
||
if (returnValue.cancelled || currentBatch) {
|
||
return;
|
||
}
|
||
if (batches.length === 0) {
|
||
processPendingBatch(true);
|
||
return;
|
||
}
|
||
currentBatch = batches.shift();
|
||
returnValue.emit('checkpoint', { 'start_next_batch': currentBatch.seq });
|
||
getDiffs()
|
||
.then(getBatchDocs)
|
||
.then(writeDocs)
|
||
.then(finishBatch)
|
||
.then(startNextBatch)
|
||
.catch(function (err) {
|
||
abortReplication('batch processing terminated with error', err);
|
||
});
|
||
}
|
||
|
||
|
||
function processPendingBatch(immediate$$1) {
|
||
if (pendingBatch.changes.length === 0) {
|
||
if (batches.length === 0 && !currentBatch) {
|
||
if ((continuous && changesOpts.live) || changesCompleted) {
|
||
returnValue.state = 'pending';
|
||
returnValue.emit('paused');
|
||
}
|
||
if (changesCompleted) {
|
||
completeReplication();
|
||
}
|
||
}
|
||
return;
|
||
}
|
||
if (
|
||
immediate$$1 ||
|
||
changesCompleted ||
|
||
pendingBatch.changes.length >= batch_size
|
||
) {
|
||
batches.push(pendingBatch);
|
||
pendingBatch = {
|
||
seq: 0,
|
||
changes: [],
|
||
docs: []
|
||
};
|
||
if (returnValue.state === 'pending' || returnValue.state === 'stopped') {
|
||
returnValue.state = 'active';
|
||
returnValue.emit('active');
|
||
}
|
||
startNextBatch();
|
||
}
|
||
}
|
||
|
||
|
||
function abortReplication(reason, err) {
|
||
if (replicationCompleted) {
|
||
return;
|
||
}
|
||
if (!err.message) {
|
||
err.message = reason;
|
||
}
|
||
result.ok = false;
|
||
result.status = 'aborting';
|
||
batches = [];
|
||
pendingBatch = {
|
||
seq: 0,
|
||
changes: [],
|
||
docs: []
|
||
};
|
||
completeReplication(err);
|
||
}
|
||
|
||
|
||
function completeReplication(fatalError) {
|
||
if (replicationCompleted) {
|
||
return;
|
||
}
|
||
/* istanbul ignore if */
|
||
if (returnValue.cancelled) {
|
||
result.status = 'cancelled';
|
||
if (writingCheckpoint) {
|
||
return;
|
||
}
|
||
}
|
||
result.status = result.status || 'complete';
|
||
result.end_time = new Date().toISOString();
|
||
result.last_seq = last_seq;
|
||
replicationCompleted = true;
|
||
|
||
src.activeTasks.remove(taskId, fatalError);
|
||
|
||
if (fatalError) {
|
||
// need to extend the error because Firefox considers ".result" read-only
|
||
fatalError = createError(fatalError);
|
||
fatalError.result = result;
|
||
|
||
// Normalize error name. i.e. 'Unauthorized' -> 'unauthorized' (eg Sync Gateway)
|
||
var errorName = (fatalError.name || '').toLowerCase();
|
||
if (errorName === 'unauthorized' || errorName === 'forbidden') {
|
||
returnValue.emit('error', fatalError);
|
||
returnValue.removeAllListeners();
|
||
} else {
|
||
backOff(opts, returnValue, fatalError, function () {
|
||
replicate(src, target, opts, returnValue);
|
||
});
|
||
}
|
||
} else {
|
||
returnValue.emit('complete', result);
|
||
returnValue.removeAllListeners();
|
||
}
|
||
}
|
||
|
||
function onChange(change, pending, lastSeq) {
|
||
/* istanbul ignore if */
|
||
if (returnValue.cancelled) {
|
||
return completeReplication();
|
||
}
|
||
// Attach 'pending' property if server supports it (CouchDB 2.0+)
|
||
/* istanbul ignore if */
|
||
if (typeof pending === 'number') {
|
||
pendingBatch.pending = pending;
|
||
}
|
||
|
||
var filter = filterChange(opts)(change);
|
||
if (!filter) {
|
||
// update processed items count by 1
|
||
var task = src.activeTasks.get(taskId);
|
||
if (task) {
|
||
// we can assume that task exists here? shouldn't be deleted by here.
|
||
var completed = task.completed_items || 0;
|
||
src.activeTasks.update(taskId, {completed_items: ++completed});
|
||
}
|
||
return;
|
||
}
|
||
pendingBatch.seq = change.seq || lastSeq;
|
||
pendingBatch.changes.push(change);
|
||
returnValue.emit('checkpoint', { 'pending_batch': pendingBatch.seq });
|
||
immediate(function () {
|
||
processPendingBatch(batches.length === 0 && changesOpts.live);
|
||
});
|
||
}
|
||
|
||
|
||
function onChangesComplete(changes) {
|
||
changesPending = false;
|
||
/* istanbul ignore if */
|
||
if (returnValue.cancelled) {
|
||
return completeReplication();
|
||
}
|
||
|
||
// if no results were returned then we're done,
|
||
// else fetch more
|
||
if (changes.results.length > 0) {
|
||
changesOpts.since = changes.results[changes.results.length - 1].seq;
|
||
getChanges();
|
||
processPendingBatch(true);
|
||
} else {
|
||
|
||
var complete = function () {
|
||
if (continuous) {
|
||
changesOpts.live = true;
|
||
getChanges();
|
||
} else {
|
||
changesCompleted = true;
|
||
}
|
||
processPendingBatch(true);
|
||
};
|
||
|
||
// update the checkpoint so we start from the right seq next time
|
||
if (!currentBatch && changes.results.length === 0) {
|
||
writingCheckpoint = true;
|
||
checkpointer.writeCheckpoint(changes.last_seq,
|
||
session).then(function () {
|
||
writingCheckpoint = false;
|
||
result.last_seq = last_seq = changes.last_seq;
|
||
if (returnValue.cancelled) {
|
||
completeReplication();
|
||
throw new Error('cancelled');
|
||
} else {
|
||
complete();
|
||
}
|
||
})
|
||
.catch(onCheckpointError);
|
||
} else {
|
||
complete();
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
function onChangesError(err) {
|
||
changesPending = false;
|
||
/* istanbul ignore if */
|
||
if (returnValue.cancelled) {
|
||
return completeReplication();
|
||
}
|
||
abortReplication('changes rejected', err);
|
||
}
|
||
|
||
|
||
function getChanges() {
|
||
if (!(
|
||
!changesPending &&
|
||
!changesCompleted &&
|
||
batches.length < batches_limit
|
||
)) {
|
||
return;
|
||
}
|
||
changesPending = true;
|
||
function abortChanges() {
|
||
changes.cancel();
|
||
}
|
||
function removeListener() {
|
||
returnValue.removeListener('cancel', abortChanges);
|
||
}
|
||
|
||
if (returnValue._changes) { // remove old changes() and listeners
|
||
returnValue.removeListener('cancel', returnValue._abortChanges);
|
||
returnValue._changes.cancel();
|
||
}
|
||
returnValue.once('cancel', abortChanges);
|
||
|
||
var changes = src.changes(changesOpts)
|
||
.on('change', onChange);
|
||
changes.then(removeListener, removeListener);
|
||
changes.then(onChangesComplete)
|
||
.catch(onChangesError);
|
||
|
||
if (opts.retry) {
|
||
// save for later so we can cancel if necessary
|
||
returnValue._changes = changes;
|
||
returnValue._abortChanges = abortChanges;
|
||
}
|
||
}
|
||
|
||
function createTask(checkpoint) {
|
||
return src.info().then(function (info) {
|
||
var total_items = typeof opts.since === 'undefined' ?
|
||
parseInt(info.update_seq, 10) - parseInt(checkpoint, 10) :
|
||
parseInt(info.update_seq, 10);
|
||
|
||
taskId = src.activeTasks.add({
|
||
name: `${continuous ? 'continuous ' : ''}replication from ${info.db_name}` ,
|
||
total_items,
|
||
});
|
||
|
||
return checkpoint;
|
||
});
|
||
}
|
||
|
||
function startChanges() {
|
||
initCheckpointer().then(function () {
|
||
/* istanbul ignore if */
|
||
if (returnValue.cancelled) {
|
||
completeReplication();
|
||
return;
|
||
}
|
||
return checkpointer.getCheckpoint().then(createTask).then(function (checkpoint) {
|
||
last_seq = checkpoint;
|
||
initial_last_seq = checkpoint;
|
||
changesOpts = {
|
||
since: last_seq,
|
||
limit: batch_size,
|
||
batch_size: batch_size,
|
||
style: style,
|
||
doc_ids: doc_ids,
|
||
selector: selector,
|
||
return_docs: true // required so we know when we're done
|
||
};
|
||
if (opts.filter) {
|
||
if (typeof opts.filter !== 'string') {
|
||
// required for the client-side filter in onChange
|
||
changesOpts.include_docs = true;
|
||
} else { // ddoc filter
|
||
changesOpts.filter = opts.filter;
|
||
}
|
||
}
|
||
if ('heartbeat' in opts) {
|
||
changesOpts.heartbeat = opts.heartbeat;
|
||
}
|
||
if ('timeout' in opts) {
|
||
changesOpts.timeout = opts.timeout;
|
||
}
|
||
if (opts.query_params) {
|
||
changesOpts.query_params = opts.query_params;
|
||
}
|
||
if (opts.view) {
|
||
changesOpts.view = opts.view;
|
||
}
|
||
getChanges();
|
||
});
|
||
}).catch(function (err) {
|
||
abortReplication('getCheckpoint rejected with ', err);
|
||
});
|
||
}
|
||
|
||
/* istanbul ignore next */
|
||
function onCheckpointError(err) {
|
||
writingCheckpoint = false;
|
||
abortReplication('writeCheckpoint completed with error', err);
|
||
}
|
||
|
||
/* istanbul ignore if */
|
||
if (returnValue.cancelled) { // cancelled immediately
|
||
completeReplication();
|
||
return;
|
||
}
|
||
|
||
if (!returnValue._addedListeners) {
|
||
returnValue.once('cancel', completeReplication);
|
||
|
||
if (typeof opts.complete === 'function') {
|
||
returnValue.once('error', opts.complete);
|
||
returnValue.once('complete', function (result) {
|
||
opts.complete(null, result);
|
||
});
|
||
}
|
||
returnValue._addedListeners = true;
|
||
}
|
||
|
||
if (typeof opts.since === 'undefined') {
|
||
startChanges();
|
||
} else {
|
||
initCheckpointer().then(function () {
|
||
writingCheckpoint = true;
|
||
return checkpointer.writeCheckpoint(opts.since, session);
|
||
}).then(function () {
|
||
writingCheckpoint = false;
|
||
/* istanbul ignore if */
|
||
if (returnValue.cancelled) {
|
||
completeReplication();
|
||
return;
|
||
}
|
||
last_seq = opts.since;
|
||
startChanges();
|
||
}).catch(onCheckpointError);
|
||
}
|
||
}
|
||
|
||
// We create a basic promise so the caller can cancel the replication possibly
|
||
// before we have actually started listening to changes etc
|
||
class Replication extends EE {
|
||
constructor() {
|
||
super();
|
||
this.cancelled = false;
|
||
this.state = 'pending';
|
||
const promise = new Promise((fulfill, reject) => {
|
||
this.once('complete', fulfill);
|
||
this.once('error', reject);
|
||
});
|
||
this.then = function (resolve, reject) {
|
||
return promise.then(resolve, reject);
|
||
};
|
||
this.catch = function (reject) {
|
||
return promise.catch(reject);
|
||
};
|
||
// As we allow error handling via "error" event as well,
|
||
// put a stub in here so that rejecting never throws UnhandledError.
|
||
this.catch(function () {});
|
||
}
|
||
|
||
cancel() {
|
||
this.cancelled = true;
|
||
this.state = 'cancelled';
|
||
this.emit('cancel');
|
||
}
|
||
|
||
ready(src, target) {
|
||
if (this._readyCalled) {
|
||
return;
|
||
}
|
||
this._readyCalled = true;
|
||
|
||
const onDestroy = () => {
|
||
this.cancel();
|
||
};
|
||
src.once('destroyed', onDestroy);
|
||
target.once('destroyed', onDestroy);
|
||
function cleanup() {
|
||
src.removeListener('destroyed', onDestroy);
|
||
target.removeListener('destroyed', onDestroy);
|
||
}
|
||
this.once('complete', cleanup);
|
||
this.once('error', cleanup);
|
||
}
|
||
}
|
||
|
||
function toPouch(db, opts) {
|
||
var PouchConstructor = opts.PouchConstructor;
|
||
if (typeof db === 'string') {
|
||
return new PouchConstructor(db, opts);
|
||
} else {
|
||
return db;
|
||
}
|
||
}
|
||
|
||
function replicateWrapper(src, target, opts, callback) {
|
||
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
if (typeof opts === 'undefined') {
|
||
opts = {};
|
||
}
|
||
|
||
if (opts.doc_ids && !Array.isArray(opts.doc_ids)) {
|
||
throw createError(BAD_REQUEST,
|
||
"`doc_ids` filter parameter is not a list.");
|
||
}
|
||
|
||
opts.complete = callback;
|
||
opts = clone(opts);
|
||
opts.continuous = opts.continuous || opts.live;
|
||
opts.retry = ('retry' in opts) ? opts.retry : false;
|
||
/*jshint validthis:true */
|
||
opts.PouchConstructor = opts.PouchConstructor || this;
|
||
var replicateRet = new Replication(opts);
|
||
var srcPouch = toPouch(src, opts);
|
||
var targetPouch = toPouch(target, opts);
|
||
replicate(srcPouch, targetPouch, opts, replicateRet);
|
||
return replicateRet;
|
||
}
|
||
|
||
function sync(src, target, opts, callback) {
|
||
if (typeof opts === 'function') {
|
||
callback = opts;
|
||
opts = {};
|
||
}
|
||
if (typeof opts === 'undefined') {
|
||
opts = {};
|
||
}
|
||
opts = clone(opts);
|
||
/*jshint validthis:true */
|
||
opts.PouchConstructor = opts.PouchConstructor || this;
|
||
src = toPouch(src, opts);
|
||
target = toPouch(target, opts);
|
||
return new Sync(src, target, opts, callback);
|
||
}
|
||
|
||
class Sync extends EE {
|
||
constructor(src, target, opts, callback) {
|
||
super();
|
||
this.canceled = false;
|
||
|
||
const optsPush = opts.push ? $inject_Object_assign({}, opts, opts.push) : opts;
|
||
const optsPull = opts.pull ? $inject_Object_assign({}, opts, opts.pull) : opts;
|
||
|
||
this.push = replicateWrapper(src, target, optsPush);
|
||
this.pull = replicateWrapper(target, src, optsPull);
|
||
|
||
this.pushPaused = true;
|
||
this.pullPaused = true;
|
||
|
||
const pullChange = (change) => {
|
||
this.emit('change', {
|
||
direction: 'pull',
|
||
change: change
|
||
});
|
||
};
|
||
const pushChange = (change) => {
|
||
this.emit('change', {
|
||
direction: 'push',
|
||
change: change
|
||
});
|
||
};
|
||
const pushDenied = (doc) => {
|
||
this.emit('denied', {
|
||
direction: 'push',
|
||
doc: doc
|
||
});
|
||
};
|
||
const pullDenied = (doc) => {
|
||
this.emit('denied', {
|
||
direction: 'pull',
|
||
doc: doc
|
||
});
|
||
};
|
||
const pushPaused = () => {
|
||
this.pushPaused = true;
|
||
/* istanbul ignore if */
|
||
if (this.pullPaused) {
|
||
this.emit('paused');
|
||
}
|
||
};
|
||
const pullPaused = () => {
|
||
this.pullPaused = true;
|
||
/* istanbul ignore if */
|
||
if (this.pushPaused) {
|
||
this.emit('paused');
|
||
}
|
||
};
|
||
const pushActive = () => {
|
||
this.pushPaused = false;
|
||
/* istanbul ignore if */
|
||
if (this.pullPaused) {
|
||
this.emit('active', {
|
||
direction: 'push'
|
||
});
|
||
}
|
||
};
|
||
const pullActive = () => {
|
||
this.pullPaused = false;
|
||
/* istanbul ignore if */
|
||
if (this.pushPaused) {
|
||
this.emit('active', {
|
||
direction: 'pull'
|
||
});
|
||
}
|
||
};
|
||
|
||
let removed = {};
|
||
|
||
const removeAll = (type) => { // type is 'push' or 'pull'
|
||
return (event, func) => {
|
||
const isChange = event === 'change' &&
|
||
(func === pullChange || func === pushChange);
|
||
const isDenied = event === 'denied' &&
|
||
(func === pullDenied || func === pushDenied);
|
||
const isPaused = event === 'paused' &&
|
||
(func === pullPaused || func === pushPaused);
|
||
const isActive = event === 'active' &&
|
||
(func === pullActive || func === pushActive);
|
||
|
||
if (isChange || isDenied || isPaused || isActive) {
|
||
if (!(event in removed)) {
|
||
removed[event] = {};
|
||
}
|
||
removed[event][type] = true;
|
||
if (Object.keys(removed[event]).length === 2) {
|
||
// both push and pull have asked to be removed
|
||
this.removeAllListeners(event);
|
||
}
|
||
}
|
||
};
|
||
};
|
||
|
||
if (opts.live) {
|
||
this.push.on('complete', this.pull.cancel.bind(this.pull));
|
||
this.pull.on('complete', this.push.cancel.bind(this.push));
|
||
}
|
||
|
||
function addOneListener(ee, event, listener) {
|
||
if (ee.listeners(event).indexOf(listener) == -1) {
|
||
ee.on(event, listener);
|
||
}
|
||
}
|
||
|
||
this.on('newListener', function (event) {
|
||
if (event === 'change') {
|
||
addOneListener(this.pull, 'change', pullChange);
|
||
addOneListener(this.push, 'change', pushChange);
|
||
} else if (event === 'denied') {
|
||
addOneListener(this.pull, 'denied', pullDenied);
|
||
addOneListener(this.push, 'denied', pushDenied);
|
||
} else if (event === 'active') {
|
||
addOneListener(this.pull, 'active', pullActive);
|
||
addOneListener(this.push, 'active', pushActive);
|
||
} else if (event === 'paused') {
|
||
addOneListener(this.pull, 'paused', pullPaused);
|
||
addOneListener(this.push, 'paused', pushPaused);
|
||
}
|
||
});
|
||
|
||
this.on('removeListener', function (event) {
|
||
if (event === 'change') {
|
||
this.pull.removeListener('change', pullChange);
|
||
this.push.removeListener('change', pushChange);
|
||
} else if (event === 'denied') {
|
||
this.pull.removeListener('denied', pullDenied);
|
||
this.push.removeListener('denied', pushDenied);
|
||
} else if (event === 'active') {
|
||
this.pull.removeListener('active', pullActive);
|
||
this.push.removeListener('active', pushActive);
|
||
} else if (event === 'paused') {
|
||
this.pull.removeListener('paused', pullPaused);
|
||
this.push.removeListener('paused', pushPaused);
|
||
}
|
||
});
|
||
|
||
this.pull.on('removeListener', removeAll('pull'));
|
||
this.push.on('removeListener', removeAll('push'));
|
||
|
||
const promise = Promise.all([
|
||
this.push,
|
||
this.pull
|
||
]).then((resp) => {
|
||
const out = {
|
||
push: resp[0],
|
||
pull: resp[1]
|
||
};
|
||
this.emit('complete', out);
|
||
if (callback) {
|
||
callback(null, out);
|
||
}
|
||
this.removeAllListeners();
|
||
return out;
|
||
}, (err) => {
|
||
this.cancel();
|
||
if (callback) {
|
||
// if there's a callback, then the callback can receive
|
||
// the error event
|
||
callback(err);
|
||
} else {
|
||
// if there's no callback, then we're safe to emit an error
|
||
// event, which would otherwise throw an unhandled error
|
||
// due to 'error' being a special event in EventEmitters
|
||
this.emit('error', err);
|
||
}
|
||
this.removeAllListeners();
|
||
if (callback) {
|
||
// no sense throwing if we're already emitting an 'error' event
|
||
throw err;
|
||
}
|
||
});
|
||
|
||
this.then = function (success, err) {
|
||
return promise.then(success, err);
|
||
};
|
||
|
||
this.catch = function (err) {
|
||
return promise.catch(err);
|
||
};
|
||
}
|
||
|
||
cancel() {
|
||
if (!this.canceled) {
|
||
this.canceled = true;
|
||
this.push.cancel();
|
||
this.pull.cancel();
|
||
}
|
||
}
|
||
}
|
||
|
||
function replication(PouchDB) {
|
||
PouchDB.replicate = replicateWrapper;
|
||
PouchDB.sync = sync;
|
||
|
||
Object.defineProperty(PouchDB.prototype, 'replicate', {
|
||
get: function () {
|
||
var self = this;
|
||
if (typeof this.replicateMethods === 'undefined') {
|
||
this.replicateMethods = {
|
||
from: function (other, opts, callback) {
|
||
return self.constructor.replicate(other, self, opts, callback);
|
||
},
|
||
to: function (other, opts, callback) {
|
||
return self.constructor.replicate(self, other, opts, callback);
|
||
}
|
||
};
|
||
}
|
||
return this.replicateMethods;
|
||
}
|
||
});
|
||
|
||
PouchDB.prototype.sync = function (dbName, opts, callback) {
|
||
return this.constructor.sync(this, dbName, opts, callback);
|
||
};
|
||
}
|
||
|
||
PouchDB.plugin(IDBPouch)
|
||
.plugin(HttpPouch$1)
|
||
.plugin(mapreduce)
|
||
.plugin(replication);
|
||
|
||
// Pull from src because pouchdb-node/pouchdb-browser themselves
|
||
|
||
export default PouchDB;
|