Merge pull request #392 from matrix-org/markjh/client_config

Add API for setting per user account data at the top level or room level.

synapse/api/filtering.py

@@ -50,7 +50,7 @@ class Filtering(object):
         # many definitions.
 
         top_level_definitions = [
-            "presence"
+            "presence", "account_data"
         ]
 
         room_level_definitions = [
@@ -139,6 +139,10 @@ class FilterCollection(object):
             self.filter_json.get("presence", {})
         )
 
+        self.account_data = Filter(
+            self.filter_json.get("account_data", {})
+        )
+
     def timeline_limit(self):
         return self.room_timeline_filter.limit()
 
@@ -151,6 +155,9 @@ class FilterCollection(object):
     def filter_presence(self, events):
         return self.presence_filter.filter(events)
 
+    def filter_account_data(self, events):
+        return self.account_data.filter(events)
+
     def filter_room_state(self, events):
         return self.room_state_filter.filter(events)
 

synapse/handlers/account_data.py

@@ -29,9 +29,10 @@ class AccountDataEventSource(object):
         last_stream_id = from_key
 
         current_stream_id = yield self.store.get_max_account_data_stream_id()
-        tags = yield self.store.get_updated_tags(user_id, last_stream_id)
 
         results = []
+        tags = yield self.store.get_updated_tags(user_id, last_stream_id)
+
         for room_id, room_tags in tags.items():
             results.append({
                 "type": "m.tag",
@@ -39,6 +40,24 @@ class AccountDataEventSource(object):
                 "room_id": room_id,
             })
 
+        account_data, room_account_data = (
+            yield self.store.get_updated_account_data_for_user(user_id, last_stream_id)
+        )
+
+        for account_data_type, content in account_data.items():
+            results.append({
+                "type": account_data_type,
+                "content": content,
+            })
+
+        for room_id, account_data in room_account_data.items():
+            for account_data_type, content in account_data.items():
+                results.append({
+                    "type": account_data_type,
+                    "content": content,
+                    "room_id": room_id,
+                })
+
         defer.returnValue((results, current_stream_id))
 
     @defer.inlineCallbacks

synapse/handlers/message.py

@@ -359,6 +359,10 @@ class MessageHandler(BaseHandler):
 
         tags_by_room = yield self.store.get_tags_for_user(user_id)
 
+        account_data, account_data_by_room = (
+            yield self.store.get_account_data_for_user(user_id)
+        )
+
         public_room_ids = yield self.store.get_public_room_ids()
 
         limit = pagin_config.limit
@@ -436,14 +440,22 @@ class MessageHandler(BaseHandler):
                     for c in current_state.values()
                 ]
 
-                account_data = []
+                account_data_events = []
                 tags = tags_by_room.get(event.room_id)
                 if tags:
-                    account_data.append({
+                    account_data_events.append({
                         "type": "m.tag",
                         "content": {"tags": tags},
                     })
-                d["account_data"] = account_data
+
+                account_data = account_data_by_room.get(event.room_id, {})
+                for account_data_type, content in account_data.items():
+                    account_data_events.append({
+                        "type": account_data_type,
+                        "content": content,
+                    })
+
+                d["account_data"] = account_data_events
             except:
                 logger.exception("Failed to get snapshot")
 
@@ -456,9 +468,17 @@ class MessageHandler(BaseHandler):
                 consumeErrors=True
             ).addErrback(unwrapFirstError)
 
+        account_data_events = []
+        for account_data_type, content in account_data.items():
+            account_data_events.append({
+                "type": account_data_type,
+                "content": content,
+            })
+
         ret = {
             "rooms": rooms_ret,
             "presence": presence,
+            "account_data": account_data_events,
             "receipts": receipt,
             "end": now_token.to_string(),
         }
@@ -498,14 +518,22 @@ class MessageHandler(BaseHandler):
                 user_id, room_id, pagin_config, membership, member_event_id, is_guest
             )
 
-        account_data = []
+        account_data_events = []
         tags = yield self.store.get_tags_for_room(user_id, room_id)
         if tags:
-            account_data.append({
+            account_data_events.append({
                 "type": "m.tag",
                 "content": {"tags": tags},
             })
-        result["account_data"] = account_data
+
+        account_data = yield self.store.get_account_data_for_room(user_id, room_id)
+        for account_data_type, content in account_data.items():
+            account_data_events.append({
+                "type": account_data_type,
+                "content": content,
+            })
+
+        result["account_data"] = account_data_events
 
         defer.returnValue(result)
 

synapse/handlers/sync.py

@@ -100,6 +100,7 @@ class InvitedSyncResult(collections.namedtuple("InvitedSyncResult", [
 class SyncResult(collections.namedtuple("SyncResult", [
     "next_batch",  # Token for the next sync
     "presence",  # List of presence events for the user.
+    "account_data",  # List of account_data events for the user.
     "joined",  # JoinedSyncResult for each joined room.
     "invited",  # InvitedSyncResult for each invited room.
     "archived",  # ArchivedSyncResult for each archived room.
@@ -195,6 +196,12 @@ class SyncHandler(BaseHandler):
             )
         )
 
+        account_data, account_data_by_room = (
+            yield self.store.get_account_data_for_user(
+                sync_config.user.to_string()
+            )
+        )
+
         tags_by_room = yield self.store.get_tags_for_user(
             sync_config.user.to_string()
         )
@@ -211,6 +218,7 @@ class SyncHandler(BaseHandler):
                     timeline_since_token=timeline_since_token,
                     ephemeral_by_room=ephemeral_by_room,
                     tags_by_room=tags_by_room,
+                    account_data_by_room=account_data_by_room,
                 )
                 joined.append(room_sync)
             elif event.membership == Membership.INVITE:
@@ -230,11 +238,13 @@ class SyncHandler(BaseHandler):
                     leave_token=leave_token,
                     timeline_since_token=timeline_since_token,
                     tags_by_room=tags_by_room,
+                    account_data_by_room=account_data_by_room,
                 )
                 archived.append(room_sync)
 
         defer.returnValue(SyncResult(
             presence=presence,
+            account_data=self.account_data_for_user(account_data),
             joined=joined,
             invited=invited,
             archived=archived,
@@ -244,7 +254,8 @@ class SyncHandler(BaseHandler):
     @defer.inlineCallbacks
     def full_state_sync_for_joined_room(self, room_id, sync_config,
                                         now_token, timeline_since_token,
-                                        ephemeral_by_room, tags_by_room):
+                                        ephemeral_by_room, tags_by_room,
+                                        account_data_by_room):
         """Sync a room for a client which is starting without any state
         Returns:
             A Deferred JoinedSyncResult.
@@ -262,19 +273,38 @@ class SyncHandler(BaseHandler):
             state=current_state,
             ephemeral=ephemeral_by_room.get(room_id, []),
             account_data=self.account_data_for_room(
-                room_id, tags_by_room
+                room_id, tags_by_room, account_data_by_room
             ),
         ))
 
-    def account_data_for_room(self, room_id, tags_by_room):
+    def account_data_for_user(self, account_data):
-        account_data = []
+        account_data_events = []
+
+        for account_data_type, content in account_data.items():
+            account_data_events.append({
+                "type": account_data_type,
+                "content": content,
+            })
+
+        return account_data_events
+
+    def account_data_for_room(self, room_id, tags_by_room, account_data_by_room):
+        account_data_events = []
         tags = tags_by_room.get(room_id)
         if tags is not None:
-            account_data.append({
+            account_data_events.append({
                 "type": "m.tag",
                 "content": {"tags": tags},
             })
-        return account_data
+
+        account_data = account_data_by_room.get(room_id, {})
+        for account_data_type, content in account_data.items():
+            account_data_events.append({
+                "type": account_data_type,
+                "content": content,
+            })
+
+        return account_data_events
 
     @defer.inlineCallbacks
     def ephemeral_by_room(self, sync_config, now_token, since_token=None):
@@ -341,7 +371,8 @@ class SyncHandler(BaseHandler):
     @defer.inlineCallbacks
     def full_state_sync_for_archived_room(self, room_id, sync_config,
                                           leave_event_id, leave_token,
-                                          timeline_since_token, tags_by_room):
+                                          timeline_since_token, tags_by_room,
+                                          account_data_by_room):
         """Sync a room for a client which is starting without any state
         Returns:
             A Deferred JoinedSyncResult.
@@ -358,7 +389,7 @@ class SyncHandler(BaseHandler):
             timeline=batch,
             state=leave_state,
             account_data=self.account_data_for_room(
-                room_id, tags_by_room
+                room_id, tags_by_room, account_data_by_room
             ),
         ))
 
@@ -415,6 +446,13 @@ class SyncHandler(BaseHandler):
             since_token.account_data_key,
         )
 
+        account_data, account_data_by_room = (
+            yield self.store.get_updated_account_data_for_user(
+                sync_config.user.to_string(),
+                since_token.account_data_key,
+            )
+        )
+
         joined = []
         archived = []
         if len(room_events) <= timeline_limit:
@@ -469,7 +507,7 @@ class SyncHandler(BaseHandler):
                     state=state,
                     ephemeral=ephemeral_by_room.get(room_id, []),
                     account_data=self.account_data_for_room(
-                        room_id, tags_by_room
+                        room_id, tags_by_room, account_data_by_room
                     ),
                 )
                 logger.debug("Result for room %s: %r", room_id, room_sync)
@@ -492,14 +530,15 @@ class SyncHandler(BaseHandler):
             for room_id in joined_room_ids:
                 room_sync = yield self.incremental_sync_with_gap_for_room(
                     room_id, sync_config, since_token, now_token,
-                    ephemeral_by_room, tags_by_room
+                    ephemeral_by_room, tags_by_room, account_data_by_room
                 )
                 if room_sync:
                     joined.append(room_sync)
 
         for leave_event in leave_events:
             room_sync = yield self.incremental_sync_for_archived_room(
-                sync_config, leave_event, since_token, tags_by_room
+                sync_config, leave_event, since_token, tags_by_room,
+                account_data_by_room
             )
             archived.append(room_sync)
 
@@ -510,6 +549,7 @@ class SyncHandler(BaseHandler):
 
         defer.returnValue(SyncResult(
             presence=presence,
+            account_data=self.account_data_for_user(account_data),
             joined=joined,
             invited=invited,
             archived=archived,
@@ -566,7 +606,8 @@ class SyncHandler(BaseHandler):
     @defer.inlineCallbacks
     def incremental_sync_with_gap_for_room(self, room_id, sync_config,
                                            since_token, now_token,
-                                           ephemeral_by_room, tags_by_room):
+                                           ephemeral_by_room, tags_by_room,
+                                           account_data_by_room):
         """ Get the incremental delta needed to bring the client up to date for
         the room. Gives the client the most recent events and the changes to
         state.
@@ -606,7 +647,7 @@ class SyncHandler(BaseHandler):
             state=state,
             ephemeral=ephemeral_by_room.get(room_id, []),
             account_data=self.account_data_for_room(
-                room_id, tags_by_room
+                room_id, tags_by_room, account_data_by_room
             ),
         )
 
@@ -616,7 +657,8 @@ class SyncHandler(BaseHandler):
 
     @defer.inlineCallbacks
     def incremental_sync_for_archived_room(self, sync_config, leave_event,
-                                           since_token, tags_by_room):
+                                           since_token, tags_by_room,
+                                           account_data_by_room):
         """ Get the incremental delta needed to bring the client up to date for
         the archived room.
         Returns:
@@ -654,7 +696,7 @@ class SyncHandler(BaseHandler):
             timeline=batch,
             state=state_events_delta,
             account_data=self.account_data_for_room(
-                leave_event.room_id, tags_by_room
+                leave_event.room_id, tags_by_room, account_data_by_room
             ),
         )
 

synapse/rest/client/v2_alpha/__init__.py

@@ -23,6 +23,7 @@ from . import (
     keys,
     tokenrefresh,
     tags,
+    account_data,
 )
 
 from synapse.http.server import JsonResource
@@ -46,3 +47,4 @@ class ClientV2AlphaRestResource(JsonResource):
         keys.register_servlets(hs, client_resource)
         tokenrefresh.register_servlets(hs, client_resource)
         tags.register_servlets(hs, client_resource)
+        account_data.register_servlets(hs, client_resource)

synapse/rest/client/v2_alpha/account_data.py

@@ -0,0 +1,111 @@
+# -*- coding: utf-8 -*-
+# Copyright 2015 OpenMarket 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.
+
+from ._base import client_v2_patterns
+
+from synapse.http.servlet import RestServlet
+from synapse.api.errors import AuthError, SynapseError
+
+from twisted.internet import defer
+
+import logging
+
+import simplejson as json
+
+logger = logging.getLogger(__name__)
+
+
+class AccountDataServlet(RestServlet):
+    """
+    PUT /user/{user_id}/account_data/{account_dataType} HTTP/1.1
+    """
+    PATTERNS = client_v2_patterns(
+        "/user/(?P<user_id>[^/]*)/account_data/(?P<account_data_type>[^/]*)"
+    )
+
+    def __init__(self, hs):
+        super(AccountDataServlet, self).__init__()
+        self.auth = hs.get_auth()
+        self.store = hs.get_datastore()
+        self.notifier = hs.get_notifier()
+
+    @defer.inlineCallbacks
+    def on_PUT(self, request, user_id, account_data_type):
+        auth_user, _, _ = yield self.auth.get_user_by_req(request)
+        if user_id != auth_user.to_string():
+            raise AuthError(403, "Cannot add account data for other users.")
+
+        try:
+            content_bytes = request.content.read()
+            body = json.loads(content_bytes)
+        except:
+            raise SynapseError(400, "Invalid JSON")
+
+        max_id = yield self.store.add_account_data_for_user(
+            user_id, account_data_type, body
+        )
+
+        yield self.notifier.on_new_event(
+            "account_data_key", max_id, users=[user_id]
+        )
+
+        defer.returnValue((200, {}))
+
+
+class RoomAccountDataServlet(RestServlet):
+    """
+    PUT /user/{user_id}/rooms/{room_id}/account_data/{account_dataType} HTTP/1.1
+    """
+    PATTERNS = client_v2_patterns(
+        "/user/(?P<user_id>[^/]*)"
+        "/rooms/(?P<room_id>[^/]*)"
+        "/account_data/(?P<account_data_type>[^/]*)"
+    )
+
+    def __init__(self, hs):
+        super(RoomAccountDataServlet, self).__init__()
+        self.auth = hs.get_auth()
+        self.store = hs.get_datastore()
+        self.notifier = hs.get_notifier()
+
+    @defer.inlineCallbacks
+    def on_PUT(self, request, user_id, room_id, account_data_type):
+        auth_user, _, _ = yield self.auth.get_user_by_req(request)
+        if user_id != auth_user.to_string():
+            raise AuthError(403, "Cannot add account data for other users.")
+
+        try:
+            content_bytes = request.content.read()
+            body = json.loads(content_bytes)
+        except:
+            raise SynapseError(400, "Invalid JSON")
+
+        if not isinstance(body, dict):
+            raise ValueError("Expected a JSON object")
+
+        max_id = yield self.store.add_account_data_to_room(
+            user_id, room_id, account_data_type, body
+        )
+
+        yield self.notifier.on_new_event(
+            "account_data_key", max_id, users=[user_id]
+        )
+
+        defer.returnValue((200, {}))
+
+
+def register_servlets(hs, http_server):
+    AccountDataServlet(hs).register(http_server)
+    RoomAccountDataServlet(hs).register(http_server)

synapse/rest/client/v2_alpha/sync.py

@@ -144,6 +144,9 @@ class SyncRestServlet(RestServlet):
         )
 
         response_content = {
+            "account_data": self.encode_account_data(
+                sync_result.account_data, filter, time_now
+            ),
             "presence": self.encode_presence(
                 sync_result.presence, filter, time_now
             ),
@@ -165,6 +168,9 @@ class SyncRestServlet(RestServlet):
             formatted.append(event)
         return {"events": filter.filter_presence(formatted)}
 
+    def encode_account_data(self, events, filter, time_now):
+        return {"events": filter.filter_account_data(events)}
+
     def encode_joined(self, rooms, filter, time_now, token_id):
         """
         Encode the joined rooms in a sync result

synapse/storage/__init__.py

@@ -42,6 +42,7 @@ from .end_to_end_keys import EndToEndKeyStore
 from .receipts import ReceiptsStore
 from .search import SearchStore
 from .tags import TagsStore
+from .account_data import AccountDataStore
 
 
 import logging
@@ -73,6 +74,7 @@ class DataStore(RoomMemberStore, RoomStore,
                 EndToEndKeyStore,
                 SearchStore,
                 TagsStore,
+                AccountDataStore,
                 ):
 
     def __init__(self, hs):

synapse/storage/account_data.py

@@ -0,0 +1,211 @@
+# -*- coding: utf-8 -*-
+# Copyright 2014, 2015 OpenMarket 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.
+
+from ._base import SQLBaseStore
+from twisted.internet import defer
+
+import ujson as json
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+class AccountDataStore(SQLBaseStore):
+
+    def get_account_data_for_user(self, user_id):
+        """Get all the client account_data for a user.
+
+        Args:
+            user_id(str): The user to get the account_data for.
+        Returns:
+            A deferred pair of a dict of global account_data and a dict
+            mapping from room_id string to per room account_data dicts.
+        """
+
+        def get_account_data_for_user_txn(txn):
+            rows = self._simple_select_list_txn(
+                txn, "account_data", {"user_id": user_id},
+                ["account_data_type", "content"]
+            )
+
+            global_account_data = {
+                row["account_data_type"]: json.loads(row["content"]) for row in rows
+            }
+
+            rows = self._simple_select_list_txn(
+                txn, "room_account_data", {"user_id": user_id},
+                ["room_id", "account_data_type", "content"]
+            )
+
+            by_room = {}
+            for row in rows:
+                room_data = by_room.setdefault(row["room_id"], {})
+                room_data[row["account_data_type"]] = json.loads(row["content"])
+
+            return (global_account_data, by_room)
+
+        return self.runInteraction(
+            "get_account_data_for_user", get_account_data_for_user_txn
+        )
+
+    def get_account_data_for_room(self, user_id, room_id):
+        """Get all the client account_data for a user for a room.
+
+        Args:
+            user_id(str): The user to get the account_data for.
+            room_id(str): The room to get the account_data for.
+        Returns:
+            A deferred dict of the room account_data
+        """
+        def get_account_data_for_room_txn(txn):
+            rows = self._simple_select_list_txn(
+                txn, "room_account_data", {"user_id": user_id, "room_id": room_id},
+                ["account_data_type", "content"]
+            )
+
+            return {
+                row["account_data_type"]: json.loads(row["content"]) for row in rows
+            }
+
+        return self.runInteraction(
+            "get_account_data_for_room", get_account_data_for_room_txn
+        )
+
+    def get_updated_account_data_for_user(self, user_id, stream_id):
+        """Get all the client account_data for a that's changed.
+
+        Args:
+            user_id(str): The user to get the account_data for.
+            stream_id(int): The point in the stream since which to get updates
+        Returns:
+            A deferred pair of a dict of global account_data and a dict
+            mapping from room_id string to per room account_data dicts.
+        """
+
+        def get_updated_account_data_for_user_txn(txn):
+            sql = (
+                "SELECT account_data_type, content FROM account_data"
+                " WHERE user_id = ? AND stream_id > ?"
+            )
+
+            txn.execute(sql, (user_id, stream_id))
+
+            global_account_data = {
+                row[0]: json.loads(row[1]) for row in txn.fetchall()
+            }
+
+            sql = (
+                "SELECT room_id, account_data_type, content FROM room_account_data"
+                " WHERE user_id = ? AND stream_id > ?"
+            )
+
+            txn.execute(sql, (user_id, stream_id))
+
+            account_data_by_room = {}
+            for row in txn.fetchall():
+                room_account_data = account_data_by_room.setdefault(row[0], {})
+                room_account_data[row[1]] = json.loads(row[2])
+
+            return (global_account_data, account_data_by_room)
+
+        return self.runInteraction(
+            "get_updated_account_data_for_user", get_updated_account_data_for_user_txn
+        )
+
+    @defer.inlineCallbacks
+    def add_account_data_to_room(self, user_id, room_id, account_data_type, content):
+        """Add some account_data to a room for a user.
+        Args:
+            user_id(str): The user to add a tag for.
+            room_id(str): The room to add a tag for.
+            account_data_type(str): The type of account_data to add.
+            content(dict): A json object to associate with the tag.
+        Returns:
+            A deferred that completes once the account_data has been added.
+        """
+        content_json = json.dumps(content)
+
+        def add_account_data_txn(txn, next_id):
+            self._simple_upsert_txn(
+                txn,
+                table="room_account_data",
+                keyvalues={
+                    "user_id": user_id,
+                    "room_id": room_id,
+                    "account_data_type": account_data_type,
+                },
+                values={
+                    "stream_id": next_id,
+                    "content": content_json,
+                }
+            )
+            self._update_max_stream_id(txn, next_id)
+
+        with (yield self._account_data_id_gen.get_next(self)) as next_id:
+            yield self.runInteraction(
+                "add_room_account_data", add_account_data_txn, next_id
+            )
+
+        result = yield self._account_data_id_gen.get_max_token(self)
+        defer.returnValue(result)
+
+    @defer.inlineCallbacks
+    def add_account_data_for_user(self, user_id, account_data_type, content):
+        """Add some account_data to a room for a user.
+        Args:
+            user_id(str): The user to add a tag for.
+            account_data_type(str): The type of account_data to add.
+            content(dict): A json object to associate with the tag.
+        Returns:
+            A deferred that completes once the account_data has been added.
+        """
+        content_json = json.dumps(content)
+
+        def add_account_data_txn(txn, next_id):
+            self._simple_upsert_txn(
+                txn,
+                table="account_data",
+                keyvalues={
+                    "user_id": user_id,
+                    "account_data_type": account_data_type,
+                },
+                values={
+                    "stream_id": next_id,
+                    "content": content_json,
+                }
+            )
+            self._update_max_stream_id(txn, next_id)
+
+        with (yield self._account_data_id_gen.get_next(self)) as next_id:
+            yield self.runInteraction(
+                "add_user_account_data", add_account_data_txn, next_id
+            )
+
+        result = yield self._account_data_id_gen.get_max_token(self)
+        defer.returnValue(result)
+
+    def _update_max_stream_id(self, txn, next_id):
+        """Update the max stream_id
+
+        Args:
+            txn: The database cursor
+            next_id(int): The the revision to advance to.
+        """
+        update_max_id_sql = (
+            "UPDATE account_data_max_stream_id"
+            " SET stream_id = ?"
+            " WHERE stream_id < ?"
+        )
+        txn.execute(update_max_id_sql, (next_id, next_id))

synapse/storage/schema/delta/26/account_data.sql

@@ -15,3 +15,26 @@
 
 
 ALTER TABLE private_user_data_max_stream_id RENAME TO account_data_max_stream_id;
+
+
+CREATE TABLE IF NOT EXISTS account_data(
+    user_id TEXT NOT NULL,
+    account_data_type TEXT NOT NULL, -- The type of the account_data.
+    stream_id BIGINT NOT NULL, -- The version of the account_data.
+    content TEXT NOT NULL,  -- The JSON content of the account_data
+    CONSTRAINT account_data_uniqueness UNIQUE (user_id, account_data_type)
+);
+
+
+CREATE TABLE IF NOT EXISTS room_account_data(
+    user_id TEXT NOT NULL,
+    room_id TEXT NOT NULL,
+    account_data_type TEXT NOT NULL, -- The type of the account_data.
+    stream_id BIGINT NOT NULL, -- The version of the account_data.
+    content TEXT NOT NULL,  -- The JSON content of the account_data
+    CONSTRAINT room_account_data_uniqueness UNIQUE (user_id, room_id, account_data_type)
+);
+
+
+CREATE INDEX account_data_stream_id on account_data(user_id, stream_id);
+CREATE INDEX room_account_data_stream_id on room_account_data(user_id, stream_id);

synapse/storage/tags.py

@@ -48,8 +48,8 @@ class TagsStore(SQLBaseStore):
         Args:
             user_id(str): The user to get the tags for.
         Returns:
-            A deferred dict mapping from room_id strings to lists of tag
+            A deferred dict mapping from room_id strings to dicts mapping from
-            strings.
+            tag strings to tag content.
         """
 
         deferred = self._simple_select_list(