def run_in_tx(fun, *args, **kwargs):
context = context_from_method(fun, args, kwargs)
_context.x = context
if not _db:
raise Exception('DB not initalized')
try:
transaction.begin()
_context.x = None
res = fun(*args, **kwargs)
if proxy:
return make_persistent_proxy(res, context)
return res
finally:
transaction.abort()
def run_in_tx(fun, *args, **kwargs):
context = context_from_method(fun, args, kwargs)
_context.x = context
if not _db:
raise Exception('DB not initalized')
try:
transaction.begin()
_context.x = None
res = fun(*args, **kwargs)
if proxy:
return make_persistent_proxy(res, context)
return res
finally:
transaction.abort()
def execute(self, args):
# we obtained `this` before the action exited from the db.transact decorator
# thus we need to reapply the db proxy
this.context = make_persistent_proxy(this.context, db.context(self))
return fun(this, self, args)
def run_in_tx(fun, *args, **kwargs):
if not _db:
raise Exception('DB not initalized')
context = context_from_method(fun, args, kwargs)
_context.x = context
cfg = get_config()
def trace(msg, t, force=False):
ch = '/'
if msg == "BEGINNING":
ch = '\\'
if cfg.getboolean('debug', 'trace_transactions', False) or force:
trace_fun = log.error
else:
trace_fun = log.debug
trace_fun("%s\ttx:%s %s\tin %s from %s, line %s %s" %
(msg, t.description, ch, fun, fun.__module__, inspect.getsourcelines(fun)[1], ch))
retries = cfg.getint('db', 'conflict_retries')
retrying = False
for i in xrange(0, retries + 1):
try:
t = transaction.begin()
t.note("%s" % (random.randint(0, 1000000)))
trace("BEGIN", t)
result = fun(*args, **kwargs)
except RollbackException:
transaction.abort()
return
except:
trace("ROLLBACK ON ERROR", t)
transaction.abort()
raise
else:
try:
if isinstance(result, RollbackValue):
trace("ROLLBACK", t)
result = result.value
transaction.abort()
else:
trace("COMMIT", t)
transaction.commit()
if retrying:
trace("Succeeded commit, after %s attempts" % i, t)
_context.x = None
return make_persistent_proxy(result, context)
except ReadConflictError as e:
trace("GOT READ CONFLICT IN RW TRANSACT, retrying %s" % i, t, force=True)
retrying = True
time.sleep(random.random() * 0.2)
except ConflictError as e:
trace("GOT WRITE CONFLICT IN RW TRANSACT, retrying %s" % i, t, force=True)
retrying = True
time.sleep(random.random() * 0.2)
except StorageTransactionError as e:
if e.args and e.args[0] == "Duplicate tpc_begin calls for same transaction":
# This may happen when an object attached to one connection is used in anther
# connection's transaction. Check and compare _p_jar attributes of all objects
# involved in this transaction! They all must be the same.
trace("DUPLICATE tpc_begin IN RW TRANSACT", t, force=True)
raise
except:
trace('ABORT: bad commit attempt', t)
transaction.abort()
raise
raise e
def run_in_tx(fun, *args, **kwargs):
if not _db:
raise Exception('DB not initalized')
context = context_from_method(fun, args, kwargs)
_context.x = context
cfg = get_config()
def trace(msg, t, force=False):
ch = '/'
if msg == "BEGINNING":
ch = '\\'
if cfg.getboolean('debug', 'trace_transactions', False) or force:
trace_fun = log.error
else:
trace_fun = log.debug
trace_fun("%s\ttx:%s %s\tin %s from %s, line %s %s" %
(msg, t.description, ch, fun, fun.__module__, inspect.getsourcelines(fun)[1], ch))
retries = cfg.getint('db', 'conflict_retries')
retrying = False
for i in xrange(0, retries + 1):
try:
t = transaction.begin()
t.note("%s" % (random.randint(0, 1000000)))
trace("BEGIN", t)
result = fun(*args, **kwargs)
except RollbackException:
transaction.abort()
return
except:
trace("ROLLBACK ON ERROR", t)
transaction.abort()
raise
else:
try:
if isinstance(result, RollbackValue):
trace("ROLLBACK", t)
result = result.value
transaction.abort()
else:
trace("COMMIT", t)
transaction.commit()
if retrying:
trace("Succeeded commit, after %s attempts" % i, t)
_context.x = None
return make_persistent_proxy(result, context)
except ReadConflictError as e:
trace("GOT READ CONFLICT IN RW TRANSACT, retrying %s" % i, t, force=True)
retrying = True
time.sleep(random.random() * 0.2)
except ConflictError as e:
trace("GOT WRITE CONFLICT IN RW TRANSACT, retrying %s" % i, t, force=True)
retrying = True
time.sleep(random.random() * 0.2)
except StorageTransactionError as e:
if e.args and e.args[0] == "Duplicate tpc_begin calls for same transaction":
# This may happen when an object attached to one connection is used in anther
# connection's transaction. Check and compare _p_jar attributes of all objects
# involved in this transaction! They all must be the same.
trace("DUPLICATE tpc_begin IN RW TRANSACT", t, force=True)
raise
except:
trace('ABORT: bad commit attempt', t)
transaction.abort()
raise
raise e
