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Make get_max_token into inlineCallbacks so that the lock works.

This commit is contained in:
Erik Johnston 2015-04-27 15:19:44 +01:00
parent 56f518d279
commit 8558e1ec73
1 changed files with 4 additions and 3 deletions
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7
synapse/storage/util/id_generators.py
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@ -105,21 +105,22 @@ class StreamIdGenerator(object):
return manager() return manager()
@defer.inlineCallbacks
def get_max_token(self, store): def get_max_token(self, store):
"""Returns the maximum stream id such that all stream ids less than or """Returns the maximum stream id such that all stream ids less than or
equal to it have been successfully persisted. equal to it have been successfully persisted.
""" """
with self._lock: with self._lock:
if self._unfinished_ids: if self._unfinished_ids:
return self._unfinished_ids[0] - 1 defer.returnValue(self._unfinished_ids[0] - 1)
if not self._current_max: if not self._current_max:
return store.runInteraction( yield store.runInteraction(
"_compute_current_max", "_compute_current_max",
self._compute_current_max, self._compute_current_max,
) )
return self._current_max defer.returnValue(self._current_max)
def _compute_current_max(self, txn): def _compute_current_max(self, txn):
txn.execute("SELECT MAX(stream_ordering) FROM events") txn.execute("SELECT MAX(stream_ordering) FROM events")