Use cropped covers/avatars to reduce bandwidth use

api/funkwhale_api/common/scripts/create_image_variations.py

@@ -0,0 +1,30 @@
+"""
+Compute different sizes of image used for Album covers and User avatars
+"""
+
+from versatileimagefield.image_warmer import VersatileImageFieldWarmer
+
+from funkwhale_api.music.models import Album
+from funkwhale_api.users.models import User
+
+
+MODELS = [(Album, "cover", "square"), (User, "avatar", "square")]
+
+
+def main(command, **kwargs):
+    for model, attribute, key_set in MODELS:
+        qs = model.objects.exclude(**{"{}__isnull".format(attribute): True})
+        qs = qs.exclude(**{attribute: ""})
+        warmer = VersatileImageFieldWarmer(
+            instance_or_queryset=qs,
+            rendition_key_set=key_set,
+            image_attr=attribute,
+            verbose=True,
+        )
+        command.stdout.write(
+            "Creating images for {} / {}".format(model.__name__, attribute)
+        )
+        num_created, failed_to_create = warmer.warm()
+        command.stdout.write(
+            "  {} created, {} in error".format(num_created, len(failed_to_create))
+        )