Pika Python AMQP Client Library
Project description
Introduction
Pika is a pure-Python implementation of the AMQP 0-9-1 protocol that tries to stay fairly independent of the underlying network support library.
Python 2.6+ and 3.3+ are supported.
Since threads aren’t appropriate to every situation, it doesn’t require threads. It takes care not to forbid them, either. The same goes for greenlets, callbacks, continuations and generators. It is not necessarily thread-safe however, and your mileage will vary.
People may be using direct sockets, plain old select(), or any of the wide variety of ways of getting network events to and from a python application. Pika tries to stay compatible with all of these, and to make adapting it to a new environment as simple as possible.
Documentation
Pika’s documentation can be found at https://pika.readthedocs.org
Example
Here is the most simple example of use, sending a message with the BlockingConnection adapter:
import pika
connection = pika.BlockingConnection()
channel = connection.channel()
channel.basic_publish(exchange='example',
routing_key='test',
body='Test Message')
connection.close()And an example of writing a blocking consumer:
import pika
connection = pika.BlockingConnection()
channel = connection.channel()
for method_frame, properties, body in channel.consume('test'):
# Display the message parts and ack the message
print method_frame, properties, body
channel.basic_ack(method_frame.delivery_tag)
# Escape out of the loop after 10 messages
if method_frame.delivery_tag == 10:
break
# Cancel the consumer and return any pending messages
requeued_messages = channel.cancel()
print 'Requeued %i messages' % requeued_messages
connection.close()Pika provides the following adapters
BlockingConnection - enables blocking, synchronous operation on top of library for simple uses
LibevConnection - adapter for use with the libev event loop http://libev.schmorp.de
SelectConnection - fast asynchronous adapter
TwistedConnection - adapter for use with the Twisted asynchronous package http://twistedmatrix.com/
TornadoConnection - adapter for use with the Tornado IO Loop http://tornadoweb.org
Contributing
To contribute to pika, please make sure that any new features or changes to existing functionality include test coverage. Additionally, please format your code using yapf with google style prior to issuing your pull request.
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