| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.servicecomb.pack.alpha.server.tcc; |
| |
| import io.grpc.stub.StreamObserver; |
| import java.lang.invoke.MethodHandles; |
| import org.apache.servicecomb.pack.alpha.server.tcc.callback.OmegaCallback; |
| import org.apache.servicecomb.pack.alpha.server.tcc.callback.OmegaCallbacksRegistry; |
| import org.apache.servicecomb.pack.alpha.server.tcc.jpa.EventConverter; |
| import org.apache.servicecomb.pack.alpha.server.tcc.service.TccTxEventService; |
| import org.apache.servicecomb.pack.contract.grpc.*; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Grpc TCC event service implement. |
| */ |
| public class GrpcTccEventService extends TccEventServiceGrpc.TccEventServiceImplBase { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| |
| private static final GrpcAck ALLOW = GrpcAck.newBuilder().setAborted(false).build(); |
| |
| private static final GrpcAck REJECT = GrpcAck.newBuilder().setAborted(true).build(); |
| |
| private final TccTxEventService tccTxEventService; |
| |
| public GrpcTccEventService(TccTxEventService tccTxEventService) { |
| this.tccTxEventService = tccTxEventService; |
| } |
| |
| @Override |
| public void onConnected(GrpcServiceConfig request, StreamObserver<GrpcTccCoordinateCommand> responseObserver) { |
| OmegaCallbacksRegistry.register(request, responseObserver); |
| LOG.info("Established connection service [{}] instanceId [{}].", request.getServiceName(), request.getInstanceId()); |
| } |
| |
| @Override |
| public void onTccTransactionStarted(GrpcTccTransactionStartedEvent request, StreamObserver<GrpcAck> responseObserver) { |
| LOG.info("Received transaction start event, global tx id: {}", request.getGlobalTxId()); |
| responseObserver.onNext(tccTxEventService.onTccStartedEvent(EventConverter.convertToGlobalTxEvent(request)) ? ALLOW : REJECT); |
| responseObserver.onCompleted(); |
| } |
| |
| @Override |
| public void onParticipationStarted(GrpcParticipationStartedEvent request, StreamObserver<GrpcAck> responseObserver) { |
| LOG.info("Received participation started event from service {} , global tx id: {}, local tx id: {}", request.getServiceName(), |
| request.getGlobalTxId(), request.getLocalTxId()) ; |
| responseObserver.onNext( |
| tccTxEventService.onParticipationStartedEvent(EventConverter.convertToParticipatedEvent(request)) ? ALLOW : REJECT); |
| responseObserver.onCompleted(); |
| } |
| |
| @Override |
| public void onParticipationEnded(GrpcParticipationEndedEvent request, StreamObserver<GrpcAck> responseObserver) { |
| LOG.info("Received participation ended event from service {} , global tx id: {}, local tx id: {}", request.getServiceName(), |
| request.getGlobalTxId(), request.getLocalTxId()) ; |
| responseObserver.onNext( |
| tccTxEventService.onParticipationEndedEvent(EventConverter.convertToParticipatedEvent(request)) ? ALLOW : REJECT); |
| responseObserver.onCompleted(); |
| } |
| |
| @Override |
| public void onTccTransactionEnded(GrpcTccTransactionEndedEvent request, StreamObserver<GrpcAck> responseObserver) { |
| LOG.info("Received transaction end event, global tx id: {}", request.getGlobalTxId()); |
| responseObserver.onNext(tccTxEventService.onTccEndedEvent(EventConverter.convertToGlobalTxEvent(request)) ? ALLOW : REJECT); |
| responseObserver.onCompleted(); |
| } |
| |
| @Override |
| public void onTccCoordinated(GrpcTccCoordinatedEvent request, StreamObserver<GrpcAck> responseObserver) { |
| LOG.info("Received coordinated event, global tx: {}, local tx: {}, parent id: {}, " |
| + "method: {}, status: {}, service [{}] instanceId [{}]", |
| request.getGlobalTxId(), request.getLocalTxId(), request.getParentTxId(), |
| request.getMethodName(), request.getStatus(), request.getServiceName(), request.getInstanceId()); |
| responseObserver.onNext(tccTxEventService.onCoordinatedEvent(EventConverter.convertToTccTxEvent(request)) ? ALLOW : REJECT); |
| responseObserver.onCompleted(); |
| } |
| |
| @Override |
| public void onDisconnected(GrpcServiceConfig request, StreamObserver<GrpcAck> responseObserver) { |
| OmegaCallback omegaCallback = OmegaCallbacksRegistry.retrieveThenRemove(request.getServiceName(), request.getInstanceId()); |
| if (null != omegaCallback) { |
| LOG.info("Disconnect from alpha, service [{}] instanceId [{}].", request.getServiceName(), request.getInstanceId()); |
| omegaCallback.disconnect(); |
| } |
| responseObserver.onNext(ALLOW); |
| responseObserver.onCompleted(); |
| } |
| } |