def rpc(self, method, callback=None, acceptable_replies=None):
"""
Shortcut wrapper to the Connection's rpc command using its callback
stack, passing in our channel number
"""
# Make sure the channel is open
self._ensure()
# If we're blocking, add subsequent commands to our stack
if self.blocking:
self._blocked.append([method, callback, acceptable_replies])
return
# Validate we got None or a list of acceptable_replies
if acceptable_replies and not isinstance(acceptable_replies, list):
raise TypeError("acceptable_replies should be list or None")
# Validate the callback is callable
if callback and not is_callable(callback):
raise TypeError("callback should be None, a function or method.")
# If this is a synchronous method, block connections until we're done
if method.synchronous:
self.blocking = method.NAME
if acceptable_replies:
for reply in acceptable_replies:
self.callbacks.add(self.channel_number, reply,
self._on_synchronous_complete)
if callback:
self.callbacks.add(self.channel_number, reply, callback)
self.send_method(method)
def rpc(self, method, callback=None, acceptable_replies=None):
"""
Shortcut wrapper to the Connection's rpc command using its callback
stack, passing in our channel number
"""
# Make sure the channel is open
self._ensure()
# If we're blocking, add subsequent commands to our stack
if self.blocking:
self._blocked.append([method, callback, acceptable_replies])
return
# Validate we got None or a list of acceptable_replies
if acceptable_replies and not isinstance(acceptable_replies, list):
raise TypeError("acceptable_replies should be list or None")
# Validate the callback is callable
if callback and not is_callable(callback):
raise TypeError("callback should be None, a function or method.")
# If this is a synchronous method, block connections until we're done
if method.synchronous:
self.blocking = method.NAME
if acceptable_replies:
for reply in acceptable_replies:
self.callbacks.add(self.channel_number, reply,
self._on_synchronous_complete)
if callback:
self.callbacks.add(self.channel_number, reply, callback)
self.send_method(method)
def _rpc(self, channel_number, method_frame,
callback_method=None, acceptable_replies=None):
"""Make an RPC call for the given callback, channel number and method.
acceptable_replies lists out what responses we'll process from the
server with the specified callback.
:param int channel_number: The channel number for the RPC call
:param pika.object.Method method_frame: The method frame to call
:param method callback_method: The callback for the RPC response
:param list acceptable_replies: The replies this RPC call expects
"""
# Validate that acceptable_replies is a list or None
if acceptable_replies and not isinstance(acceptable_replies, list):
raise TypeError("acceptable_replies should be list or None")
# Validate the callback is callable
if callback_method:
if not utils.is_callable(callback_method):
raise TypeError("callback should be None, function or method.")
for reply in acceptable_replies:
self.callbacks.add(channel_number, reply, callback_method)
# Send the rpc call to RabbitMQ
self._send_method(channel_number, method_frame)
def _rpc(self,
channel_number,
method,
callback=None,
acceptable_replies=None):
"""
Make an RPC call for the given callback, channel number and method.
acceptable_replies lists out what responses we'll process from the
server with the specified callback.
"""
# Validate that acceptable_replies is a list or None
if acceptable_replies and not isinstance(acceptable_replies, list):
raise TypeError("acceptable_replies should be list or None")
# Validate the callback is callable
if callback and not is_callable(callback):
raise TypeError("callback should be None, a function or method.")
# If we were passed a callback, add it to our stack
if callback:
for reply in acceptable_replies:
self.callbacks.add(channel_number, reply, callback)
# Send the rpc call to RabbitMQ
self._send_method(channel_number, method)
def _rpc(self,
channel_number,
method_frame,
callback_method=None,
acceptable_replies=None):
"""Make an RPC call for the given callback, channel number and method.
acceptable_replies lists out what responses we'll process from the
server with the specified callback.
:param int channel_number: The channel number for the RPC call
:param pika.object.Method method_frame: The method frame to call
:param method callback_method: The callback for the RPC response
:param list acceptable_replies: The replies this RPC call expects
"""
# Validate that acceptable_replies is a list or None
if acceptable_replies and not isinstance(acceptable_replies, list):
raise TypeError('acceptable_replies should be list or None')
# Validate the callback is callable
if callback_method:
if not utils.is_callable(callback_method):
raise TypeError('callback should be None, function or method.')
for reply in acceptable_replies:
self.callbacks.add(channel_number, reply, callback_method)
# Send the rpc call to RabbitMQ
self._send_method(channel_number, method_frame)
def _validate_callback(self, callback):
"""Validate the value passed in is a method or function.
:param method callback callback: The method to validate
:raises: TypeError
"""
if callback is not None and not utils.is_callable(callback):
raise TypeError("Callback should be a function or method, is %s", type(callback))
def _validate_callback(self, callback):
"""Validate the value passed in is a method or function.
:param method callback callback: The method to validate
:raises: TypeError
"""
if (callback is not None and not utils.is_callable(callback)):
raise TypeError("Callback should be a function or method, is %s",
type(callback))
def bind_callback(self, message):
if not is_callable(self._on_message_callback):
LOGGER.info('Wrong callback is binded')
raise CallBackError('The callback is not callable')
try:
self._on_message_callback(message)
LOGGER.info('Received message # %s #', message)
except TypeError as error:
LOGGER.info('Error on the callback definition. Message is not '
'acknowledge. And it will be keep on the RabbitMQ')
error_message = 'You should implement your callback ' \
'like my_callback(content)'
raise CallBackError(error_message, original_exception=str(error))
def _rpc(self, method_frame, callback=None, acceptable_replies=None):
"""Shortcut wrapper to the Connection's rpc command using its callback
stack, passing in our channel number.
:param pika.amqp_object.Method method_frame: The method frame to call
:param method callback: The callback for the RPC response
:param list acceptable_replies: The replies this RPC call expects
"""
# Make sure the channel is open
if self.is_closed:
raise exceptions.ChannelClosed
# If the channel is blocking, add subsequent commands to our stack
if self._blocking:
return self._blocked.append(
[method_frame, callback, acceptable_replies])
# Validate we got None or a list of acceptable_replies
if acceptable_replies and not isinstance(acceptable_replies, list):
raise TypeError("acceptable_replies should be list or None")
# Validate the callback is callable
if callback and not is_callable(callback):
raise TypeError("callback should be None, a function or method.")
# Block until a response frame is received for synchronous frames
if method_frame.synchronous:
self.blocking = method_frame.NAME
# If acceptable replies are set, add callbacks
if acceptable_replies:
for reply in acceptable_replies or list():
if isinstance(reply, tuple):
reply, arguments = reply
else:
arguments = None
LOGGER.debug('Adding in on_synchronous_complete callback')
self.callbacks.add(self.channel_number,
reply,
self._on_synchronous_complete,
arguments=arguments)
if callback:
LOGGER.debug('Adding passed in callback')
self.callbacks.add(self.channel_number,
reply,
callback,
arguments=arguments)
self._send_method(method_frame)
def _rpc(self, method_frame, callback=None, acceptable_replies=None):
"""Shortcut wrapper to the Connection's rpc command using its callback
stack, passing in our channel number.
:param pika.amqp_object.Method method_frame: The method frame to call
:param method callback: The callback for the RPC response
:param list acceptable_replies: The replies this RPC call expects
"""
# Make sure the channel is open
if self.is_closed:
raise exceptions.ChannelClosed
# If the channel is blocking, add subsequent commands to our stack
if self._blocking:
return self._blocked.append([method_frame,
callback,
acceptable_replies])
# Validate we got None or a list of acceptable_replies
if acceptable_replies and not isinstance(acceptable_replies, list):
raise TypeError("acceptable_replies should be list or None")
# Validate the callback is callable
if callback and not is_callable(callback):
raise TypeError("callback should be None, a function or method.")
# Block until a response frame is received for synchronous frames
if method_frame.synchronous:
self.blocking = method_frame.NAME
# If acceptable replies are set, add callbacks
if acceptable_replies:
for reply in acceptable_replies or list():
if isinstance(reply, tuple):
reply, arguments = reply
else:
arguments = None
LOGGER.debug('Adding in on_synchronous_complete callback')
self.callbacks.add(self.channel_number, reply,
self._on_synchronous_complete,
arguments=arguments)
if callback:
LOGGER.debug('Adding passed in callback')
self.callbacks.add(self.channel_number, reply, callback,
arguments=arguments)
self._send_method(method_frame)
def _rpc(self, channel_number, method, callback=None, acceptable_replies=None):
"""
Make an RPC call for the given callback, channel number and method.
acceptable_replies lists out what responses we'll process from the
server with the specified callback.
"""
# Validate that acceptable_replies is a list or None
if acceptable_replies and not isinstance(acceptable_replies, list):
raise TypeError("acceptable_replies should be list or None")
# Validate the callback is callable
if callback and not is_callable(callback):
raise TypeError("callback should be None, a function or method.")
# If we were passed a callback, add it to our stack
if callback:
for reply in acceptable_replies:
self.callbacks.add(channel_number, reply, callback)
# Send the rpc call to RabbitMQ
self._send_method(channel_number, method)
def _validate_channel_and_callback(self, callback):
if not self.is_open:
raise exceptions.ChannelClosed()
if callback is not None and not is_callable(callback):
raise ValueError('callback must be a function or method')
def test_is_callable_false(self):
self.assertFalse(utils.is_callable(1))
def test_is_callable_true(self):
self.assertTrue(utils.is_callable(utils.is_callable))
def test_is_callable_false_no_callable(self):
callable = utils.Callable
utils.Callable = None
self.assertFalse(utils.is_callable(1))
utils.Callable = callable
def _validate_channel_and_callback(self, callback):
if not self.is_open:
raise exceptions.ChannelClosed()
if callback is not None and not is_callable(callback):
raise ValueError('callback must be a function or method')
def test_is_callable_true_no_callable(self):
callable = utils.Callable
utils.Callable = None
self.assertTrue(utils.is_callable(utils.is_callable))
utils.Callable = callable
def test_is_callable_false(self):
self.assertFalse(utils.is_callable(1))
def test_is_callable_true(self):
self.assertTrue(utils.is_callable(utils.is_callable))
def test_is_callable_true_no_callable(self):
callable = utils.Callable
utils.Callable = None
self.assertTrue(utils.is_callable(utils.is_callable))
utils.Callable = callable
def test_is_callable_false_no_callable(self):
callable = utils.Callable
utils.Callable = None
self.assertFalse(utils.is_callable(1))
utils.Callable = callable
