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Merge pull request #2934 from matrix-org/erikj/cache_fix

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Fix bug with delayed cache invalidation stream
This commit is contained in:
Erik Johnston 2018-03-05 11:33:17 +00:00 committed by GitHub
commit 42174946f8
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GPG key ID: 4AEE18F83AFDEB23
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()