diff options
Diffstat (limited to 'synapse/storage/events_worker.py')
| -rw-r--r-- | synapse/storage/events_worker.py | 79 |
1 files changed, 46 insertions, 33 deletions
diff --git a/synapse/storage/events_worker.py b/synapse/storage/events_worker.py index 896225aab9..67433606c6 100644 --- a/synapse/storage/events_worker.py +++ b/synapse/storage/events_worker.py @@ -12,29 +12,28 @@ # 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 +import logging +from collections import namedtuple + +from canonicaljson import json from twisted.internet import defer +from synapse.api.errors import SynapseError +# these are only included to make the type annotations work +from synapse.events import EventBase # noqa: F401 from synapse.events import FrozenEvent +from synapse.events.snapshot import EventContext # noqa: F401 from synapse.events.utils import prune_event - from synapse.util.logcontext import ( - PreserveLoggingContext, make_deferred_yieldable, run_in_background, LoggingContext, + PreserveLoggingContext, + make_deferred_yieldable, + run_in_background, ) from synapse.util.metrics import Measure -from synapse.api.errors import SynapseError - -from collections import namedtuple - -import logging - -from canonicaljson import json -# these are only included to make the type annotations work -from synapse.events import EventBase # noqa: F401 -from synapse.events.snapshot import EventContext # noqa: F401 +from ._base import SQLBaseStore logger = logging.getLogger(__name__) @@ -223,32 +222,47 @@ class EventsWorkerStore(SQLBaseStore): """Takes a database connection and waits for requests for events from the _event_fetch_list queue. """ - event_list = [] i = 0 while True: - try: - with self._event_fetch_lock: - event_list = self._event_fetch_list - self._event_fetch_list = [] - - if not event_list: - single_threaded = self.database_engine.single_threaded - if single_threaded or i > EVENT_QUEUE_ITERATIONS: - self._event_fetch_ongoing -= 1 - return - else: - self._event_fetch_lock.wait(EVENT_QUEUE_TIMEOUT_S) - i += 1 - continue - i = 0 + with self._event_fetch_lock: + event_list = self._event_fetch_list + self._event_fetch_list = [] + + if not event_list: + single_threaded = self.database_engine.single_threaded + if single_threaded or i > EVENT_QUEUE_ITERATIONS: + self._event_fetch_ongoing -= 1 + return + else: + self._event_fetch_lock.wait(EVENT_QUEUE_TIMEOUT_S) + i += 1 + continue + i = 0 + + self._fetch_event_list(conn, event_list) + + def _fetch_event_list(self, conn, event_list): + """Handle a load of requests from the _event_fetch_list queue + Args: + conn (twisted.enterprise.adbapi.Connection): database connection + + event_list (list[Tuple[list[str], Deferred]]): + The fetch requests. Each entry consists of a list of event + ids to be fetched, and a deferred to be completed once the + events have been fetched. + + """ + with Measure(self._clock, "_fetch_event_list"): + try: event_id_lists = zip(*event_list)[0] event_ids = [ item for sublist in event_id_lists for item in sublist ] rows = self._new_transaction( - conn, "do_fetch", [], [], None, self._fetch_event_rows, event_ids + conn, "do_fetch", [], [], + self._fetch_event_rows, event_ids, ) row_dict = { @@ -281,9 +295,8 @@ class EventsWorkerStore(SQLBaseStore): with PreserveLoggingContext(): d.errback(e) - if event_list: - with PreserveLoggingContext(): - self.hs.get_reactor().callFromThread(fire, event_list) + with PreserveLoggingContext(): + self.hs.get_reactor().callFromThread(fire, event_list) @defer.inlineCallbacks def _enqueue_events(self, events, check_redacted=True, allow_rejected=False): |