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Fix bug with delayed cache invalidation stream

Browse Source 
We poked the notifier before updated the current token for the cache
invalidation stream. This mean that sometimes the update wouldn't be
sent until the next time a cache was invalidated.
This commit is contained in:
Erik Johnston 2018-03-02 14:43:29 +00:00
parent 6619f047ad
commit efb79820b4
2 changed files with 15 additions and 13 deletions
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26
synapse/storage/_base.py
View File

@ -48,16 +48,16 @@ class LoggingTransaction(object):
passed to the constructor. Adds logging and metrics to the .execute()
method."""
__slots__ = [
"txn", "name", "database_engine", "after_callbacks", "final_callbacks",
"txn", "name", "database_engine", "after_callbacks", "exception_callbacks",
]
def __init__(self, txn, name, database_engine, after_callbacks,
final_callbacks):
exception_callbacks):
object.__setattr__(self, "txn", txn)
object.__setattr__(self, "name", name)
object.__setattr__(self, "database_engine", database_engine)
object.__setattr__(self, "after_callbacks", after_callbacks)
object.__setattr__(self, "final_callbacks", final_callbacks)
object.__setattr__(self, "exception_callbacks", exception_callbacks)
def call_after(self, callback, *args, **kwargs):
"""Call the given callback on the main twisted thread after the
@ -66,8 +66,8 @@ class LoggingTransaction(object):
"""
self.after_callbacks.append((callback, args, kwargs))
def call_finally(self, callback, *args, **kwargs):
self.final_callbacks.append((callback, args, kwargs))
def call_on_exception(self, callback, *args, **kwargs):
self.exception_callbacks.append((callback, args, kwargs))
def __getattr__(self, name):
return getattr(self.txn, name)
@ -215,7 +215,7 @@ class SQLBaseStore(object):
self._clock.looping_call(loop, 10000)
def _new_transaction(self, conn, desc, after_callbacks, final_callbacks,
def _new_transaction(self, conn, desc, after_callbacks, exception_callbacks,
logging_context, func, *args, **kwargs):
start = time.time() * 1000
txn_id = self._TXN_ID
@ -236,7 +236,7 @@ class SQLBaseStore(object):
txn = conn.cursor()
txn = LoggingTransaction(
txn, name, self.database_engine, after_callbacks,
final_callbacks,
exception_callbacks,
)
r = func(txn, *args, **kwargs)
conn.commit()
@ -308,11 +308,11 @@ class SQLBaseStore(object):
current_context = LoggingContext.current_context()
after_callbacks = []
final_callbacks = []
exception_callbacks = []
def inner_func(conn, *args, **kwargs):
return self._new_transaction(
conn, desc, after_callbacks, final_callbacks, current_context,
conn, desc, after_callbacks, exception_callbacks, current_context,
func, *args, **kwargs
)
@ -321,9 +321,10 @@ class SQLBaseStore(object):
for after_callback, after_args, after_kwargs in after_callbacks:
after_callback(*after_args, **after_kwargs)
finally:
for after_callback, after_args, after_kwargs in final_callbacks:
except: # noqa: E722, as we reraise the exception this is fine.
for after_callback, after_args, after_kwargs in exception_callbacks:
after_callback(*after_args, **after_kwargs)
raise
defer.returnValue(result)
@ -1000,7 +1001,8 @@ class SQLBaseStore(object):
# __exit__ called after the transaction finishes.
ctx = self._cache_id_gen.get_next()
stream_id = ctx.__enter__()
txn.call_finally(ctx.__exit__, None, None, None)
txn.call_on_exception(ctx.__exit__, None, None, None)
txn.call_after(ctx.__exit__, None, None, None)
txn.call_after(self.hs.get_notifier().on_new_replication_data)
self._simple_insert_txn(

2
synapse/storage/event_push_actions.py
View File

@ -76,7 +76,7 @@ class EventPushActionsWorkerStore(SQLBaseStore):
name="_find_stream_orderings_for_times_txn",
database_engine=self.database_engine,
after_callbacks=[],
final_callbacks=[],
exception_callbacks=[],
)
self._find_stream_orderings_for_times_txn(cur)
cur.close()