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Fix chain cover background update to work with split out event persisters (#9115)

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Erik Johnston 2021-01-14 17:19:35 +00:00 • committed by GitHub
parent 631dd06f2c
commit 659c415ed4
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5 changed files with 38 additions and 29 deletions
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11
synapse/storage/database.py
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@ -49,6 +49,7 @@ from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.storage.background_updates import BackgroundUpdater
from synapse.storage.engines import BaseDatabaseEngine, PostgresEngine, Sqlite3Engine
from synapse.storage.types import Connection, Cursor
from synapse.storage.util.sequence import build_sequence_generator
from synapse.types import Collection
# python 3 does not have a maximum int value
@ -412,6 +413,16 @@ class DatabasePool:
self._check_safe_to_upsert,
)
# We define this sequence here so that it can be referenced from both
# the DataStore and PersistEventStore.
def get_chain_id_txn(txn):
txn.execute("SELECT COALESCE(max(chain_id), 0) FROM event_auth_chains")
return txn.fetchone()[0]
self.event_chain_id_gen = build_sequence_generator(
engine, get_chain_id_txn, "event_auth_chain_id"
)
def is_running(self) -> bool:
"""Is the database pool currently running
"""