diff options
Diffstat (limited to 'synapse/storage/events.py')
| -rw-r--r-- | synapse/storage/events.py | 188 |
1 files changed, 118 insertions, 70 deletions
diff --git a/synapse/storage/events.py b/synapse/storage/events.py index ca501932f3..0d6519f30d 100644 --- a/synapse/storage/events.py +++ b/synapse/storage/events.py @@ -12,7 +12,7 @@ # 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, _RollbackButIsFineException +from ._base import SQLBaseStore from twisted.internet import defer, reactor @@ -27,6 +27,7 @@ from synapse.util.logutils import log_function from synapse.util.metrics import Measure from synapse.api.constants import EventTypes from synapse.api.errors import SynapseError +from synapse.state import resolve_events from canonicaljson import encode_canonical_json from collections import deque, namedtuple, OrderedDict @@ -71,22 +72,19 @@ class _EventPeristenceQueue(object): """ _EventPersistQueueItem = namedtuple("_EventPersistQueueItem", ( - "events_and_contexts", "current_state", "backfilled", "deferred", + "events_and_contexts", "backfilled", "deferred", )) def __init__(self): self._event_persist_queues = {} self._currently_persisting_rooms = set() - def add_to_queue(self, room_id, events_and_contexts, backfilled, current_state): + def add_to_queue(self, room_id, events_and_contexts, backfilled): """Add events to the queue, with the given persist_event options. """ queue = self._event_persist_queues.setdefault(room_id, deque()) if queue: end_item = queue[-1] - if end_item.current_state or current_state: - # We perist events with current_state set to True one at a time - pass if end_item.backfilled == backfilled: end_item.events_and_contexts.extend(events_and_contexts) return end_item.deferred.observe() @@ -96,7 +94,6 @@ class _EventPeristenceQueue(object): queue.append(self._EventPersistQueueItem( events_and_contexts=events_and_contexts, backfilled=backfilled, - current_state=current_state, deferred=deferred, )) @@ -216,7 +213,6 @@ class EventsStore(SQLBaseStore): d = preserve_fn(self._event_persist_queue.add_to_queue)( room_id, evs_ctxs, backfilled=backfilled, - current_state=None, ) deferreds.append(d) @@ -229,11 +225,10 @@ class EventsStore(SQLBaseStore): @defer.inlineCallbacks @log_function - def persist_event(self, event, context, current_state=None, backfilled=False): + def persist_event(self, event, context, backfilled=False): deferred = self._event_persist_queue.add_to_queue( event.room_id, [(event, context)], backfilled=backfilled, - current_state=current_state, ) self._maybe_start_persisting(event.room_id) @@ -246,21 +241,10 @@ class EventsStore(SQLBaseStore): def _maybe_start_persisting(self, room_id): @defer.inlineCallbacks def persisting_queue(item): - if item.current_state: - for event, context in item.events_and_contexts: - # There should only ever be one item in - # events_and_contexts when current_state is - # not None - yield self._persist_event( - event, context, - current_state=item.current_state, - backfilled=item.backfilled, - ) - else: - yield self._persist_events( - item.events_and_contexts, - backfilled=item.backfilled, - ) + yield self._persist_events( + item.events_and_contexts, + backfilled=item.backfilled, + ) self._event_persist_queue.handle_queue(room_id, persisting_queue) @@ -294,36 +278,89 @@ class EventsStore(SQLBaseStore): for chunk in chunks: # We can't easily parallelize these since different chunks # might contain the same event. :( + + current_state_for_room = {} + if not backfilled: + # Work out the new "current state" for each room. + # We do this by working out what the new extremities are and then + # calculating the state from that. + events_by_room = {} + for event, context in chunk: + events_by_room.setdefault(event.room_id, []).append( + (event, context) + ) + + for room_id, ev_ctx_rm in events_by_room.items(): + # Work out new extremities by recursively adding and removing + # the new events. + latest_event_ids = yield self.get_latest_event_ids_in_room( + room_id + ) + new_latest_event_ids = set(latest_event_ids) + for event, ctx in ev_ctx_rm: + if event.internal_metadata.is_outlier(): + continue + + new_latest_event_ids.difference_update( + e_id for e_id, _ in event.prev_events + ) + new_latest_event_ids.add(event.event_id) + + if new_latest_event_ids == set(latest_event_ids): + # No change in extremities, so no change in state + continue + + # Now we need to work out the different state sets for + # each state extremities + state_sets = [] + missing_event_ids = [] + was_updated = False + for event_id in new_latest_event_ids: + # First search in the list of new events we're adding, + # and then use the current state from that + for ev, ctx in ev_ctx_rm: + if event_id == ev.event_id: + if ctx.current_state_ids is None: + raise Exception("Unknown current state") + state_sets.append(ctx.current_state_ids) + if ctx.delta_ids or hasattr(ev, "state_key"): + was_updated = True + break + else: + # If we couldn't find it, then we'll need to pull + # the state from the database + was_updated = True + missing_event_ids.append(event_id) + + if missing_event_ids: + # Now pull out the state for any missing events from DB + event_to_groups = yield self._get_state_group_for_events( + missing_event_ids, + ) + + groups = set(event_to_groups.values()) + group_to_state = yield self._get_state_for_groups(groups) + + state_sets.extend(group_to_state.values()) + + if not new_latest_event_ids or was_updated: + current_state_for_room[room_id] = yield resolve_events( + state_sets, + state_map_factory=lambda ev_ids: self.get_events( + ev_ids, get_prev_content=False, check_redacted=False, + ), + ) + yield self.runInteraction( "persist_events", self._persist_events_txn, events_and_contexts=chunk, backfilled=backfilled, delete_existing=delete_existing, + current_state_for_room=current_state_for_room, ) persist_event_counter.inc_by(len(chunk)) - @_retry_on_integrity_error - @defer.inlineCallbacks - @log_function - def _persist_event(self, event, context, current_state=None, backfilled=False, - delete_existing=False): - try: - with self._stream_id_gen.get_next() as stream_ordering: - event.internal_metadata.stream_ordering = stream_ordering - yield self.runInteraction( - "persist_event", - self._persist_event_txn, - event=event, - context=context, - current_state=current_state, - backfilled=backfilled, - delete_existing=delete_existing, - ) - persist_event_counter.inc() - except _RollbackButIsFineException: - pass - @defer.inlineCallbacks def get_event(self, event_id, check_redacted=True, get_prev_content=False, allow_rejected=False, @@ -426,7 +463,7 @@ class EventsStore(SQLBaseStore): @log_function def _persist_events_txn(self, txn, events_and_contexts, backfilled, - delete_existing=False): + delete_existing=False, current_state_for_room={}): """Insert some number of room events into the necessary database tables. Rejected events are only inserted into the events table, the events_json table, @@ -436,6 +473,40 @@ class EventsStore(SQLBaseStore): If delete_existing is True then existing events will be purged from the database before insertion. This is useful when retrying due to IntegrityError. """ + for room_id, current_state in current_state_for_room.iteritems(): + txn.call_after(self._get_current_state_for_key.invalidate_all) + txn.call_after(self.get_rooms_for_user.invalidate_all) + txn.call_after(self.get_users_in_room.invalidate, (room_id,)) + + # Add an entry to the current_state_resets table to record the point + # where we clobbered the current state + stream_order = events_and_contexts[-1][0].internal_metadata.stream_ordering + self._simple_insert_txn( + txn, + table="current_state_resets", + values={"event_stream_ordering": stream_order} + ) + + self._simple_delete_txn( + txn, + table="current_state_events", + keyvalues={"room_id": room_id}, + ) + + self._simple_insert_many_txn( + txn, + table="current_state_events", + values=[ + { + "event_id": ev_id, + "room_id": room_id, + "type": key[0], + "state_key": key[1], + } + for key, ev_id in current_state.iteritems() + ], + ) + # Ensure that we don't have the same event twice. # Pick the earliest non-outlier if there is one, else the earliest one. new_events_and_contexts = OrderedDict() @@ -798,29 +869,6 @@ class EventsStore(SQLBaseStore): # to update the current state table return - for event, _ in state_events_and_contexts: - if event.internal_metadata.is_outlier(): - # Outlier events shouldn't clobber the current state. - continue - - txn.call_after( - self._get_current_state_for_key.invalidate, - (event.room_id, event.type, event.state_key,) - ) - - self._simple_upsert_txn( - txn, - "current_state_events", - keyvalues={ - "room_id": event.room_id, - "type": event.type, - "state_key": event.state_key, - }, - values={ - "event_id": event.event_id, - } - ) - return def _add_to_cache(self, txn, events_and_contexts): |