def process_data(self, message_data, message):
"""Consumer callback to call a method on a proxy object.
Parses the message for validity and fires off a thread to call the
proxy object method.
Message data should be a dictionary with two keys:
method: string representing the method to call
args: dictionary of arg: value
Example: {'method': 'echo', 'args': {'value': 42}}
"""
LOG.debug(_('received %s') % message_data)
# This will be popped off in _unpack_context
msg_id = message_data.get('_msg_id', None)
ctxt = _unpack_context(message_data)
method = message_data.get('method')
args = message_data.get('args', {})
message.ack()
if not method:
# NOTE(vish): we may not want to ack here, but that means that bad
# messages stay in the queue indefinitely, so for now
# we just log the message and send an error string
# back to the caller
LOG.warn(_('no method for message: %s') % message_data)
ctxt.reply(msg_id,
_('No method for message: %s') % message_data)
return
self.pool.spawn_n(self._process_data, ctxt, method, args)
def __call__(self, message_data):
"""Consumer callback to call a method on a proxy object.
Parses the message for validity and fires off a thread to call the
proxy object method.
Message data should be a dictionary with two keys:
method: string representing the method to call
args: dictionary of arg: value
Example: {'method': 'echo', 'args': {'value': 42}}
"""
LOG.debug(_('received %s') % message_data)
ctxt = _unpack_context(message_data)
method = message_data.get('method')
args = message_data.get('args', {})
if not method:
LOG.warn(_('no method for message: %s') % message_data)
ctxt.reply(_('No method for message: %s') % message_data)
return
self.pool.spawn_n(self._process_data, ctxt, method, args)
