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Retry transaction, not SQL query

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This commit is contained in:
Erik Johnston 2015-04-08 13:11:28 +01:00
parent 24d8134ac1
commit 9a05795619
1 changed files with 25 additions and 21 deletions
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46
synapse/storage/_base.py
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@ -182,22 +182,12 @@ class LoggingTransaction(object):
start = time.time() * 1000
try:
i = 0
N = 5
while True:
try:
return self.txn.execute(
sql, *args, **kwargs
)
except self.database_engine.module.DatabaseError as e:
if self.database_engine.is_deadlock(e) and i < N:
i += 1
logger.warn("[SQL DEADLOCK] {%s}", self.name)
continue
raise
return self.txn.execute(
sql, *args, **kwargs
)
except Exception as e:
logger.debug("[SQL FAIL] {%s} %s", self.name, e)
raise
logger.debug("[SQL FAIL] {%s} %s", self.name, e)
raise
finally:
msecs = (time.time() * 1000) - start
sql_logger.debug("[SQL time] {%s} %f", self.name, msecs)
@ -347,7 +337,7 @@ class SQLBaseStore(object):
start_time = time.time() * 1000
def inner_func(txn, *args, **kwargs):
def inner_func(conn, *args, **kwargs):
with LoggingContext("runInteraction") as context:
current_context.copy_to(context)
start = time.time() * 1000
@ -362,10 +352,24 @@ class SQLBaseStore(object):
sql_scheduling_timer.inc_by(time.time() * 1000 - start_time)
transaction_logger.debug("[TXN START] {%s}", name)
try:
return func(
LoggingTransaction(txn, name, self.database_engine),
*args, **kwargs
)
i = 0
N = 5
while True:
try:
txn = conn.cursor()
return func(
LoggingTransaction(txn, name, self.database_engine),
*args, **kwargs
)
except self.database_engine.module.DatabaseError as e:
logger.warn("[TXN DEADLOCK] {%s} %r, %r", name, e.errno, e.sqlstate)
if self.database_engine.is_deadlock(e):
logger.warn("[TXN DEADLOCK] {%s} %d/%d", name, i, N)
if i < N:
i += 1
conn.rollback()
continue
raise
except Exception as e:
logger.debug("[TXN FAIL] {%s}", name, e)
raise
@ -380,7 +384,7 @@ class SQLBaseStore(object):
sql_txn_timer.inc_by(duration, desc)
with PreserveLoggingContext():
result = yield self._db_pool.runInteraction(
result = yield self._db_pool.runWithConnection(
inner_func, *args, **kwargs
)
defer.returnValue(result)