RATIS-2681. Add a gRPC peer data transfer listener - #1577
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What changes were proposed in this pull request?
Add an optional
Consumer<GrpcDataTransferEvent>for observing sender-side outcomes of gRPC peer data transfers.The listener reports:
RaftPeerIdTLSorNONE)SUCCESSorFAILURE)Events are emitted for
AppendEntriesrequests containing state machine entries and for logicalInstallSnapshottransfers. Heartbeats, configuration-only appends, and snapshot notification-only requests are excluded. Listener exceptions are isolated from the replication path, and the listener is documented as non-blocking.What is the link to the Apache JIRA
https://issues.apache.org/jira/browse/RATIS-2681
How was this patch tested?
./mvnw -pl ratis-test -am -Dtest=TestGrpcDataTransferEventListener -DfailIfNoTests=false test./mvnw -pl ratis-grpc -am -DskipTests compile checkstyle:check./mvnw -pl ratis-grpc,ratis-test -am -DskipTests apache-rat:check./mvnw -pl ratis-grpc -am -DskipTests -Djacoco.skip test-compile spotbugs:checkThe tests cover plaintext and TLS append success, append failure and retry, listener exception isolation, one failure event per failed attempt, and successful snapshot transfer to a newly added peer.