4c2b7e04db
Currently queues are lazy on operations with messages, but not with subscriptions. It means the user is forced to pre-create a queue before creating a subscription to the queue, which is not very convenient. Also currently if a queue has a subscription, the subscription will stay on even if the user will delete the queue. But even if so Zaqar will still work normally. This is strange that subscriptions can exist with deleted corresponding queues, but it's impossible to create a subscription to yet unexising queue. This patch makes queues lazy also on operations with subscriptions, so the user will be able to subscribe to yet unexisting queue. Also this patch modifies tests, to make sure Zaqar's subscriptions work both with pre-created queues and non-existing queues. APIImpact DocImpact Implements: blueprint lazy-queues-in-subscriptions Change-Id: I814b503243c4e06e74acc6b709bda4269df889e9
Zaqar
Zaqar is a multi-tenant cloud messaging and notification service for web and mobile developers. It combines the ideas pioneered by Amazon's SQS product with additional semantics to support event broadcasting.
The service features a fully RESTful API, which developers can use to send messages between various components of their SaaS and mobile applications, by using a variety of communication patterns. Underlying this API is an efficient messaging engine designed with scalability and security in mind.
Other OpenStack components can integrate with Zaqar to surface events to end users and to communicate with guest agents that run in the "over-cloud" layer. Cloud operators can leverage Zaqar to provide equivalents of SQS and SNS to their customers.
General information is available in wiki:
The API v1.1 (stable) specification and documentation are available at:
Zaqar Contributor Documentation, the source of which is in
doc/source/, is available at:
Contributors are encouraged to join IRC
(#openstack-zaqar channel on
irc.freenode.net):
Information on how to run unit and functional tests is available at:
http://docs.openstack.org/developer/zaqar/running_tests.html
Information on how to run benchmarking tool is available at:
http://docs.openstack.org/developer/zaqar/running_benchmark.html
Using Zaqar
If you are new to Zaqar and just want to try it, you can set up Zaqar in the development environment.
Using Zaqar in production environment:
Coming soon!
Using Zaqar in development environment:
The instruction is available at:
http://docs.openstack.org/developer/zaqar/devref/development.environment.html
This will allow you to run local Zaqar server with MongoDB as database.
This way is the easiest, quickest and most suitable for beginners.