def _WaitImpl(self):
"""Waits on the API call associated with this RPC. The callback,
if provided, will be executed before Wait() returns. If this RPC
is already complete, or if the RPC was never started, this
function will return immediately.
Raises:
InterruptedError if a callback throws an uncaught exception.
"""
try:
rpc_completed = _apphosting_runtime___python__apiproxy.Wait(self)
except (runtime.DeadlineExceededError,
apiproxy_errors.InterruptedError):
raise
except:
exc_class, exc, tb = sys.exc_info()
if (isinstance(exc, SystemError)
and exc.args[0] == 'uncaught RPC exception'):
raise
rpc = None
if hasattr(exc, "_appengine_apiproxy_rpc"):
rpc = exc._appengine_apiproxy_rpc
new_exc = apiproxy_errors.InterruptedError(exc, rpc)
raise new_exc.__class__, new_exc, tb
return True
def Wait(self):
"""Waits on the API call associated with this RPC. The callback,
if provided, will be executed before Wait() returns. If this RPC
is already complete, or if the RPC was never started, this
function will return immediately.
Raises:
InterruptedError if a callback throws an uncaught exception.
"""
try:
rpc_completed = _apphosting_runtime___python__apiproxy.Wait(self)
except runtime.DeadlineExceededError:
raise
except apiproxy_errors.InterruptedError:
raise
except:
exc_class, exc, tb = sys.exc_info()
if (isinstance(exc, SystemError)
and exc.args == ('uncaught RPC exception', )):
raise
rpc = None
if hasattr(exc, "_appengine_apiproxy_rpc"):
rpc = exc._appengine_apiproxy_rpc
new_exc = apiproxy_errors.InterruptedError(exc, rpc)
raise new_exc.__class__, new_exc, tb
assert rpc_completed, (
"RPC for %s.%s was not completed, and no other " +
"exception was raised " % (self.package, self.call))
def __internal_callback(self):
"""This is the callback set on the low-level RPC object.
It sets a flag on the current object indicating that the high-level
callback should now be called. If interrupts are enabled, it also
interrupts the current wait_any() call by raising an exception.
"""
self.__must_call_user_callback = True
if self.__class__.__local.may_interrupt_wait and not self.__rpc.exception:
raise apiproxy_errors.InterruptedError(None, self.__rpc)
