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Use cache for authentication backends

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The commit introduces the following API incompatibilities:

In ejabberd_auth.erl:
* dirty_get_registered_users/0 is renamed to get_users/0
* get_vh_registered_users/1 is renamed to get_users/1
* get_vh_registered_users/2 is renamed to get_users/2
* get_vh_registered_users_number/1 is renamed to count_users/1
* get_vh_registered_users_number/2 is renamed to count_users/2

In ejabberd_auth callbacks
* plain_password_required/0 is replaced by plain_password_required/1
  where the argument is a virtual host
* store_type/0 is replaced by store_type/1 where the argument is
  a virtual host
* set_password/3 is now an optional callback
* remove_user/3 callback is no longer needed
* remove_user/2 now should return `ok | {error, atom()}`
* is_user_exists/2 now must only be implemented for backends
  with `external` store type
* check_password/6 is no longer needed
* check_password/4 now must only be implemented for backends
  with `external` store type
* try_register/3 is now an optional callback and should return
  `ok | {error, atom()}`
* dirty_get_registered_users/0 is no longer needed
* get_vh_registered_users/1 is no longer needed
* get_vh_registered_users/2 is renamed to get_users/2
* get_vh_registered_users_number/1 is no longer needed
* get_vh_registered_users_number/2 is renamed to count_users/2
* get_password_s/2 is no longer needed
* get_password/2 now must only be implemented for backends with
  `plain` or `scram` store type

Additionally, the commit introduces two new callbacks:
* use_cache/1 where the argument is a virtual host
* cache_nodes/1 where the argument is a virtual host

New options are also introduced: `auth_use_cache`, `auth_cache_missed`,
`auth_cache_life_time` and `auth_cache_size`.
This commit is contained in:
Evgeniy Khramtsov 2017-05-11 14:37:21 +03:00
parent e890525788
commit 633b68db11
23 changed files with 905 additions and 1665 deletions
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2
src/extauth.erl
View file

@ -83,7 +83,7 @@ try_register(User, Server, Password) ->
case call_port(Server,
[<<"tryregister">>, User, Server, Password])
of
true -> {atomic, ok};
true -> ok;
false -> {error, not_allowed}
end.