coolbeevip commented on a change in pull request #607: WIP [SCB-1577] Improve
the transaction compensation mechanism for FSM
URL: https://github.com/apache/servicecomb-pack/pull/607#discussion_r350008192
##########
File path:
alpha/alpha-server/src/main/java/org/apache/servicecomb/pack/alpha/server/fsm/GrpcSagaEventService.java
##########
@@ -54,11 +54,32 @@ public GrpcSagaEventService(ActorEventChannel
actorEventChannel,
}
@Override
- public void onConnected(
- GrpcServiceConfig request, StreamObserver<GrpcCompensateCommand>
responseObserver) {
- omegaCallbacks
- .computeIfAbsent(request.getServiceName(), key -> new
ConcurrentHashMap<>())
- .put(request.getInstanceId(), new GrpcOmegaCallback(responseObserver));
+ public StreamObserver<GrpcServiceConfig>
onConnected(StreamObserver<GrpcCompensateCommand> responseObserver) {
+ return new StreamObserver<GrpcServiceConfig>(){
+
+ private GrpcOmegaCallback grpcOmegaCallback;
+
+ @Override
+ public void onNext(GrpcServiceConfig grpcServiceConfig) {
+ grpcOmegaCallback = new GrpcOmegaCallback(responseObserver);
+ omegaCallbacks
+ .computeIfAbsent(grpcServiceConfig.getServiceName(), key -> new
ConcurrentHashMap<>())
+ .put(grpcServiceConfig.getInstanceId(), grpcOmegaCallback);
+ responseObserver.onNext(GrpcCompensateCommand.newBuilder()
+ .setConnectedResponse(true)
+ .build());
Review comment:
@WillemJiang Alpha sends a response message to Omega after receiving the
connection request.
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