Hello, users, devs. Today we would like to share new event bus plug-in (hybrid) which combines inMemory (default) and (Kafka or RabbitMQ) event buses, so inMemory is used for intra-CloudStack purposes and RMQ or Kafka are used for external.
We use Kafka Event Bus in our deployment and after the development of a new plug-in (which we publish soon), we discovered that this bus has lack of functionality. Internal event receivers are not able to subscribe to events when that bus is used. Actually, it's quite a nasty thing because of cutting certain CloudStack functionality and It's really impossible who would like to subscribe to events even inside the CloudStack core, e.g. to implement delayed processing. So, using standard Kafka Event Bus these functions stop working and the regression discovery will not be handy. I know that RabbitMQ implementation also has certain subscription problems. To overcome it, we implemented a "hybrid" even bus, which uses inMemory for internals and any other for external communications. You can find that bus on GitHub: https://github.com/bwsw/cloud-plugin-event-bus-hybrid License: Apache 2 If the developers and community wish to merge it into the main tree, please feel free, we grant it. We also can merge ourselves if project leaders find the question worth it. -- With best regards, Ivan Kudryavtsev Bitworks LLC Cell: +7-923-414-1515 WWW: http://bitworks.software/ <http://bw-sw.com/>