[jira] [Created] (IGNITE-17493) CMG service should use onLeaderElected callback in order to detect the fact that current node is a leader

[Vyacheslav Koptilin (Jira)]

Vyacheslav Koptilin created IGNITE-17493:
--------------------------------------------

             Summary: CMG service should use onLeaderElected callback in order 
to detect the fact that current node is a leader
                 Key: IGNITE-17493
                 URL: https://issues.apache.org/jira/browse/IGNITE-17493
             Project: Ignite
          Issue Type: Improvement
            Reporter: Vyacheslav Koptilin


CmgRaftService service should use onLeaderElected callback in order to detect 
the fact that current node is a leader.

{code:java}
    /**
     * Returns {@code true} if the current node is the CMG leader.
     *
     * @return {@code true} if the current node is the CMG leader.
     */
    // TODO: replace with onLeaderElected callback after 
https://issues.apache.org/jira/browse/IGNITE-16379 is implemented
    public CompletableFuture<Boolean> isCurrentNodeLeader() {
        ClusterNode thisNode = clusterService.topologyService().localMember();

        return leader().thenApply(thisNode::equals);
    }

    private CompletableFuture<ClusterNode> leader() {
        return raftService.refreshLeader().thenApply(v -> 
resolvePeer(raftService.leader()));
    }
{code}




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