def _on_message_sent(self, message, result, delivery_state=None):
"""Callback run on a message send operation. If message
has a user defined callback, it will be called here. If the result
of the operation is failure, the message state will be reverted
to 'pending' up to the maximum retry count.
:param message: The message that was sent.
:type message: ~uamqp.message.Message
:param result: The result of the send operation.
:type result: int
:param error: An Exception if an error ocurred during the send operation.
:type error: ~Exception
"""
# pylint: disable=protected-access
exception = delivery_state
result = constants.MessageSendResult(result)
if result == constants.MessageSendResult.Error:
if isinstance(delivery_state, Exception):
exception = errors.ClientMessageError(delivery_state,
info=delivery_state)
exception.action = errors.ErrorAction(retry=True)
elif delivery_state:
error = errors.ErrorResponse(delivery_state)
exception = errors._process_send_error(self._error_policy,
error.condition,
error.description,
error.info)
else:
exception = errors.MessageSendFailed(
constants.ErrorCodes.UnknownError)
exception.action = errors.ErrorAction(retry=True)
if exception.action.retry == errors.ErrorAction.retry and message.retries < self._error_policy.max_retries:
if exception.action.increment_retries:
message.retries += 1
self._backoff = exception.action.backoff
_logger.debug(
"Message error, retrying. Attempts: %r, Error: %r",
message.retries, exception)
message.state = constants.MessageState.WaitingToBeSent
return
if exception.action.retry == errors.ErrorAction.retry:
_logger.info("Message error, %r retries exhausted. Error: %r",
message.retries, exception)
else:
_logger.info("Message error, not retrying. Error: %r",
exception)
message.state = constants.MessageState.SendFailed
message._response = exception
else:
_logger.debug("Message sent: %r, %r", result, exception)
message.state = constants.MessageState.SendComplete
message._response = errors.MessageAlreadySettled()
if message.on_send_complete:
message.on_send_complete(result, exception)
def _error_handler(error):
"""
Called internally when an event has failed to send so we
can parse the error to determine whether we should attempt
to retry sending the event again.
Returns the action to take according to error type.
:param error: The error received in the send attempt.
:type error: Exception
:rtype: ~uamqp.errors.ErrorAction
"""
if error.condition == b'com.microsoft:server-busy':
return errors.ErrorAction(retry=True, backoff=4)
if error.condition == b'com.microsoft:timeout':
return errors.ErrorAction(retry=True, backoff=2)
if error.condition == b'com.microsoft:operation-cancelled':
return errors.ErrorAction(retry=True)
if error.condition == b"com.microsoft:container-close":
return errors.ErrorAction(retry=True, backoff=4)
if error.condition in _NO_RETRY_ERRORS:
return errors.ErrorAction(retry=False)
return errors.ErrorAction(retry=True)
def on_connection_error(self, error):
if self._is_session:
return errors.ErrorAction(retry=False)
return super(_ServiceBusErrorPolicy, self).on_connection_error(error)
def on_unrecognized_error(self, error):
if self._is_session:
return AMQPErrors.ErrorAction(retry=False)
return super(_ServiceBusErrorPolicy, self).on_unrecognized_error(error)
