rework runInteraction in terms of runConnection

... so that we can share the code
This commit is contained in:
Richard van der Hoff 2018-01-16 16:17:24 +00:00
parent febdca4b37
commit 8615f19d20

View File

@ -291,33 +291,33 @@ class SQLBaseStore(object):
@defer.inlineCallbacks
def runInteraction(self, desc, func, *args, **kwargs):
"""Wraps the .runInteraction() method on the underlying db_pool."""
current_context = LoggingContext.current_context()
"""Starts a transaction on the database and runs a given function
start_time = time.time() * 1000
Arguments:
desc (str): description of the transaction, for logging and metrics
func (func): callback function, which will be called with a
database transaction (twisted.enterprise.adbapi.Transaction) as
its first argument, followed by `args` and `kwargs`.
args (list): positional args to pass to `func`
kwargs (dict): named args to pass to `func`
Returns:
Deferred: The result of func
"""
current_context = LoggingContext.current_context()
after_callbacks = []
final_callbacks = []
def inner_func(conn, *args, **kwargs):
with LoggingContext("runInteraction") as context:
sql_scheduling_timer.inc_by(time.time() * 1000 - start_time)
if self.database_engine.is_connection_closed(conn):
logger.debug("Reconnecting closed database connection")
conn.reconnect()
current_context.copy_to(context)
return self._new_transaction(
conn, desc, after_callbacks, final_callbacks, current_context,
func, *args, **kwargs
)
return self._new_transaction(
conn, desc, after_callbacks, final_callbacks, current_context,
func, *args, **kwargs
)
try:
with PreserveLoggingContext():
result = yield self._db_pool.runWithConnection(
inner_func, *args, **kwargs
)
result = yield self.runWithConnection(inner_func, *args, **kwargs)
for after_callback, after_args, after_kwargs in after_callbacks:
after_callback(*after_args, **after_kwargs)
@ -329,7 +329,18 @@ class SQLBaseStore(object):
@defer.inlineCallbacks
def runWithConnection(self, func, *args, **kwargs):
"""Wraps the .runInteraction() method on the underlying db_pool."""
"""Wraps the .runWithConnection() method on the underlying db_pool.
Arguments:
func (func): callback function, which will be called with a
database connection (twisted.enterprise.adbapi.Connection) as
its first argument, followed by `args` and `kwargs`.
args (list): positional args to pass to `func`
kwargs (dict): named args to pass to `func`
Returns:
Deferred: The result of func
"""
current_context = LoggingContext.current_context()
start_time = time.time() * 1000