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Convert runWithConnection to async. (#8121)

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Patrick Cloke 2020-08-19 07:09:24 -04:00 committed by GitHub
parent d294f0e7e1
commit d89692ea84
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3 changed files with 15 additions and 15 deletions
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1
changelog.d/8121.misc Normal file
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@ -0,0 +1 @@
Convert various parts of the codebase to async/await.

2
synapse/metrics/background_process_metrics.py
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@ -175,7 +175,7 @@ def run_as_background_process(desc: str, func, *args, **kwargs):
It returns a Deferred which completes when the function completes, but it doesn't It returns a Deferred which completes when the function completes, but it doesn't
follow the synapse logcontext rules, which makes it appropriate for passing to follow the synapse logcontext rules, which makes it appropriate for passing to
clock.looping_call and friends (or for firing-and-forgetting in the middle of a clock.looping_call and friends (or for firing-and-forgetting in the middle of a
normal synapse inlineCallbacks function). normal synapse async function).
Args: Args:
desc: a description for this background process type desc: a description for this background process type

13
synapse/storage/database.py
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@ -516,7 +516,8 @@ class DatabasePool(object):
logger.warning("Starting db txn '%s' from sentinel context", desc) logger.warning("Starting db txn '%s' from sentinel context", desc)
try: try:
result = yield self.runWithConnection( result = yield defer.ensureDeferred(
self.runWithConnection(
self.new_transaction, self.new_transaction,
desc, desc,
after_callbacks, after_callbacks,
@ -525,6 +526,7 @@ class DatabasePool(object):
*args, *args,
**kwargs **kwargs
) )
)
for after_callback, after_args, after_kwargs in after_callbacks: for after_callback, after_args, after_kwargs in after_callbacks:
after_callback(*after_args, **after_kwargs) after_callback(*after_args, **after_kwargs)
@ -535,8 +537,7 @@ class DatabasePool(object):
return result return result
@defer.inlineCallbacks async def runWithConnection(self, func: Callable, *args: Any, **kwargs: Any) -> Any:
def runWithConnection(self, func: Callable, *args: Any, **kwargs: Any):
"""Wraps the .runWithConnection() method on the underlying db_pool. """Wraps the .runWithConnection() method on the underlying db_pool.
Arguments: Arguments:
@ -547,7 +548,7 @@ class DatabasePool(object):
kwargs: named args to pass to `func` kwargs: named args to pass to `func`
Returns: Returns:
Deferred: The result of func The result of func
""" """
parent_context = current_context() # type: Optional[LoggingContextOrSentinel] parent_context = current_context() # type: Optional[LoggingContextOrSentinel]
if not parent_context: if not parent_context:
@ -570,12 +571,10 @@ class DatabasePool(object):
return func(conn, *args, **kwargs) return func(conn, *args, **kwargs)
result = yield make_deferred_yieldable( return await make_deferred_yieldable(
self._db_pool.runWithConnection(inner_func, *args, **kwargs) self._db_pool.runWithConnection(inner_func, *args, **kwargs)
) )
return result
@staticmethod @staticmethod
def cursor_to_dict(cursor): def cursor_to_dict(cursor):
"""Converts a SQL cursor into an list of dicts. """Converts a SQL cursor into an list of dicts.