A simple message queuing system, built on top of MongoDB and based upon B.Coe's Karait source code.
CapsuleMQ is the Python part of Benjamin Coe's Karait ( http://github.com/bcoe/karait ) with additional code for inter-host communication and routing. I did not directly contribute to Karait so I can ignore Node.js and Ruby implementation, but anyone is free to take it back :-)
Writing to a queue
from capsulemq import Message, Queue
queue = Queue(
host='localhost', # MongoDB host. Defaults to localhost.
port=27017, # MongoDB port. Defaults to 27017.
database='capsulemq', # Database that will store the capsulemq queue. Defaults to capsulemq.
queue='messages', # The capped collection that capsulemq writes to. Defaults to messages.
average_message_size=8192, # How big do you expect the messages will be in bytes? Defaults to 8192.
queue_size=4096 # How many messages should be allowed in the queue. Defaults to 4096.
)
queue.write({
'name': 'Benjamin',
'action': 'Rock'
})
# or
message = Message()
message.name = 'Benjamin'
message.action = 'Rock!'
queue.write(message, routing_key='my_routing_key', expire=3.0)Reading from a queue
from capsulemq import Message, Queue
queue = Queue()
message = queue.read()[0]
print "%s" % (message.name)
message.delete()
# or
message = queue.read(routing_key='my_routing_key')[0]
print "%s" % (message.action)
message.delete()See unit tests for more documentation.
Copyright (c) 2011 Attachments.me. See LICENSE.txt for further details.