Merge pull request #2783 from matrix-org/erikj/media_last_accessed

Keep track of last access time for local media

synapse/rest/media/v1/media_repository.py

@@ -53,7 +53,7 @@
 logger = logging.getLogger(__name__)
 
 
-UPDATE_RECENTLY_ACCESSED_REMOTES_TS = 60 * 1000
+UPDATE_RECENTLY_ACCESSED_TS = 60 * 1000
 
 
 class MediaRepository(object):
@@ -75,6 +75,7 @@ def __init__(self, hs):
         self.remote_media_linearizer = Linearizer(name="media_remote")
 
         self.recently_accessed_remotes = set()
+        self.recently_accessed_locals = set()
 
         # List of StorageProviders where we should search for media and
         # potentially upload to.
@@ -99,19 +100,34 @@ def __init__(self, hs):
         )
 
         self.clock.looping_call(
-            self._update_recently_accessed_remotes,
-            UPDATE_RECENTLY_ACCESSED_REMOTES_TS
+            self._update_recently_accessed,
+            UPDATE_RECENTLY_ACCESSED_TS,
         )
 
     @defer.inlineCallbacks
-    def _update_recently_accessed_remotes(self):
-        media = self.recently_accessed_remotes
+    def _update_recently_accessed(self):
+        remote_media = self.recently_accessed_remotes
         self.recently_accessed_remotes = set()
 
+        local_media = self.recently_accessed_locals
+        self.recently_accessed_locals = set()
+
         yield self.store.update_cached_last_access_time(
-            media, self.clock.time_msec()
+            local_media, remote_media, self.clock.time_msec()
         )
 
+    def mark_recently_accessed(self, server_name, media_id):
+        """Mark the given media as recently accessed.
+
+        Args:
+            server_name (str|None): Origin server of media, or None if local
+            media_id (str): The media ID of the content
+        """
+        if server_name:
+            self.recently_accessed_remotes.add((server_name, media_id))
+        else:
+            self.recently_accessed_locals.add(media_id)
+
     @defer.inlineCallbacks
     def create_content(self, media_type, upload_name, content, content_length,
                        auth_user):
@@ -173,6 +189,8 @@ def get_local_media(self, request, media_id, name):
             respond_404(request)
             return
 
+        self.mark_recently_accessed(None, media_id)
+
         media_type = media_info["media_type"]
         media_length = media_info["media_length"]
         upload_name = name if name else media_info["upload_name"]
@@ -204,7 +222,7 @@ def get_remote_media(self, request, server_name, media_id, name):
             Deferred: Resolves once a response has successfully been written
                 to request
         """
-        self.recently_accessed_remotes.add((server_name, media_id))
+        self.mark_recently_accessed(server_name, media_id)
 
         # We linearize here to ensure that we don't try and download remote
         # media multiple times concurrently

synapse/rest/media/v1/thumbnail_resource.py

@@ -67,6 +67,7 @@ def _async_render_GET(self, request):
                 yield self._respond_local_thumbnail(
                     request, media_id, width, height, method, m_type
                 )
+            self.media_repo.mark_recently_accessed(server_name, media_id)
         else:
             if self.dynamic_thumbnails:
                 yield self._select_or_generate_remote_thumbnail(
@@ -78,6 +79,7 @@ def _async_render_GET(self, request):
                     request, server_name, media_id,
                     width, height, method, m_type
                 )
+            self.media_repo.mark_recently_accessed(None, media_id)
 
     @defer.inlineCallbacks
     def _respond_local_thumbnail(self, request, media_id, width, height,

synapse/storage/media_repository.py

@@ -173,16 +173,33 @@ def store_cached_remote_media(self, origin, media_id, media_type,
             desc="store_cached_remote_media",
         )
 
-    def update_cached_last_access_time(self, origin_id_tuples, time_ts):
+    def update_cached_last_access_time(self, local_media, remote_media, time_ms):
+        """Updates the last access time of the given media
+
+        Args:
+            local_media (iterable[str]): Set of media_ids
+            remote_media (iterable[(str, str)]): Set of (server_name, media_id)
+            time_ms: Current time in milliseconds
+        """
         def update_cache_txn(txn):
             sql = (
                 "UPDATE remote_media_cache SET last_access_ts = ?"
                 " WHERE media_origin = ? AND media_id = ?"
             )
 
             txn.executemany(sql, (
-                (time_ts, media_origin, media_id)
-                for media_origin, media_id in origin_id_tuples
+                (time_ms, media_origin, media_id)
+                for media_origin, media_id in remote_media
+            ))
+
+            sql = (
+                "UPDATE local_media_repository SET last_access_ts = ?"
+                " WHERE media_id = ?"
+            )
+
+            txn.executemany(sql, (
+                (time_ms, media_id)
+                for media_id in local_media
             ))
 
         return self.runInteraction("update_cached_last_access_time", update_cache_txn)

synapse/storage/prepare_database.py

@@ -25,7 +25,7 @@
 
 # Remember to update this number every time a change is made to database
 # schema files, so the users will be informed on server restarts.
-SCHEMA_VERSION = 46
+SCHEMA_VERSION = 47
 
 dir_path = os.path.abspath(os.path.dirname(__file__))
 

synapse/storage/schema/delta/47/last_access_media.sql

@@ -0,0 +1,16 @@
+/* Copyright 2018 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+ALTER TABLE local_media_repository ADD COLUMN last_access_ts BIGINT;