diff --git a/synapse/storage/events_worker.py b/synapse/storage/events_worker.py
index 2e23dd78ba..32d9d00ffb 100644
--- a/synapse/storage/events_worker.py
+++ b/synapse/storage/events_worker.py
@@ -20,7 +20,7 @@ from synapse.events import FrozenEvent
from synapse.events.utils import prune_event
from synapse.util.logcontext import (
- preserve_fn, PreserveLoggingContext, make_deferred_yieldable
+ PreserveLoggingContext, make_deferred_yieldable, run_in_background,
)
from synapse.util.metrics import Measure
from synapse.api.errors import SynapseError
@@ -51,6 +51,26 @@ _EventCacheEntry = namedtuple("_EventCacheEntry", ("event", "redacted_event"))
class EventsWorkerStore(SQLBaseStore):
+ def get_received_ts(self, event_id):
+ """Get received_ts (when it was persisted) for the event.
+
+ Raises an exception for unknown events.
+
+ Args:
+ event_id (str)
+
+ Returns:
+ Deferred[int|None]: Timestamp in milliseconds, or None for events
+ that were persisted before received_ts was implemented.
+ """
+ return self._simple_select_one_onecol(
+ table="events",
+ keyvalues={
+ "event_id": event_id,
+ },
+ retcol="received_ts",
+ desc="get_received_ts",
+ )
@defer.inlineCallbacks
def get_event(self, event_id, check_redacted=True,
@@ -299,7 +319,8 @@ class EventsWorkerStore(SQLBaseStore):
res = yield make_deferred_yieldable(defer.gatherResults(
[
- preserve_fn(self._get_event_from_row)(
+ run_in_background(
+ self._get_event_from_row,
row["internal_metadata"], row["json"], row["redacts"],
rejected_reason=row["rejects"],
)
@@ -316,7 +337,7 @@ class EventsWorkerStore(SQLBaseStore):
def _fetch_event_rows(self, txn, events):
rows = []
N = 200
- for i in range(1 + len(events) / N):
+ for i in range(1 + len(events) // N):
evs = events[i * N:(i + 1) * N]
if not evs:
break
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