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Use SequenceGenerator for state group ID allocation

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This commit is contained in:
Richard van der Hoff 2020-07-16 10:58:12 +01:00
parent 42509b8fb6
commit 3c36ae17a5
4 changed files with 11 additions and 26 deletions
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13
synapse/storage/engines/sqlite.py
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@ -96,19 +96,6 @@ class Sqlite3Engine(BaseDatabaseEngine["sqlite3.Connection"]):
def lock_table(self, txn, table):
return
def get_next_state_group_id(self, txn):
"""Returns an int that can be used as a new state_group ID
"""
# We do application locking here since if we're using sqlite then
# we are a single process synapse.
with self._current_state_group_id_lock:
if self._current_state_group_id is None:
txn.execute("SELECT COALESCE(max(id), 0) FROM state_groups")
self._current_state_group_id = txn.fetchone()[0]
self._current_state_group_id += 1
return self._current_state_group_id
@property
def server_version(self):
"""Gets a string giving the server version. For example: '3.22.0'