[jira] [Created] (IGNITE-3306) Extend IgniteCluster interface with the methods to send and receive custom discovery events

["Andrey Kornev (JIRA)" <ji...@apache.org>]

Andrey Kornev created IGNITE-3306:
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             Summary: Extend IgniteCluster interface with the methods to send and receive custom discovery events
                 Key: IGNITE-3306
                 URL: https://issues.apache.org/jira/browse/IGNITE-3306
             Project: Ignite
          Issue Type: Improvement
            Reporter: Andrey Kornev


{{GridDiscoveryManager}} already provides the methods for sending/receiving custom discovery messages: {{GridDiscoveryManager.sendCustomEvent(...)}} and {{GridDiscoveryManager.setCustomEventListener(...)}} methods correspondingly. This API is very powerful as it provides reliable delivery guarantees that are totally ordered with respect to the rest of discovery events. It's essential for implementing so-called view-synchronous group communication primitives.

Unfortunately, {{GridDiscoveryManager}} is not part of the public API. 

This ticket proposes to extend {{IgniteCluster}} interface to expose those methods. {{DiscoveryCustomMessage}} class should also be moved out of the {{internal}} package to a public package.



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