| /* |
| * 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.omega.connector.grpc.saga; |
| |
| import com.google.protobuf.ByteString; |
| import io.grpc.ManagedChannel; |
| import io.grpc.stub.StreamObserver; |
| import java.lang.invoke.MethodHandles; |
| import org.apache.servicecomb.pack.contract.grpc.ServerMeta; |
| import org.apache.servicecomb.pack.omega.connector.grpc.core.LoadBalanceContext; |
| import org.apache.servicecomb.pack.omega.context.ServiceConfig; |
| import org.apache.servicecomb.pack.omega.transaction.AlphaResponse; |
| import org.apache.servicecomb.pack.omega.transaction.MessageDeserializer; |
| import org.apache.servicecomb.pack.omega.transaction.MessageHandler; |
| import org.apache.servicecomb.pack.omega.transaction.MessageSerializer; |
| import org.apache.servicecomb.pack.omega.transaction.SagaMessageSender; |
| import org.apache.servicecomb.pack.omega.transaction.TxEvent; |
| import org.apache.servicecomb.pack.contract.grpc.GrpcAck; |
| import org.apache.servicecomb.pack.contract.grpc.GrpcServiceConfig; |
| import org.apache.servicecomb.pack.contract.grpc.GrpcTxEvent; |
| import org.apache.servicecomb.pack.contract.grpc.GrpcTxEvent.Builder; |
| import org.apache.servicecomb.pack.contract.grpc.TxEventServiceGrpc; |
| import org.apache.servicecomb.pack.contract.grpc.TxEventServiceGrpc.TxEventServiceBlockingStub; |
| import org.apache.servicecomb.pack.contract.grpc.TxEventServiceGrpc.TxEventServiceStub; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class GrpcSagaClientMessageSender implements SagaMessageSender { |
| |
| private final String target; |
| |
| private final TxEventServiceStub asyncEventService; |
| |
| private final MessageSerializer serializer; |
| |
| private final TxEventServiceBlockingStub blockingEventService; |
| |
| private final GrpcCompensateStreamObserver compensateStreamObserver; |
| |
| private final GrpcServiceConfig serviceConfig; |
| |
| public GrpcSagaClientMessageSender( |
| String address, |
| ManagedChannel channel, |
| MessageSerializer serializer, |
| MessageDeserializer deserializer, |
| ServiceConfig serviceConfig, |
| MessageHandler handler, |
| LoadBalanceContext loadContext) { |
| this.target = address; |
| this.asyncEventService = TxEventServiceGrpc.newStub(channel); |
| this.blockingEventService = TxEventServiceGrpc.newBlockingStub(channel); |
| this.serializer = serializer; |
| this.compensateStreamObserver = |
| new GrpcCompensateStreamObserver(loadContext, this, handler, deserializer); |
| this.serviceConfig = serviceConfig(serviceConfig.serviceName(), serviceConfig.instanceId()); |
| } |
| |
| @Override |
| public void onConnected() { |
| asyncEventService.onConnected(compensateStreamObserver).onNext(serviceConfig); |
| } |
| |
| @Override |
| public void onDisconnected() { |
| blockingEventService.onDisconnected(serviceConfig); |
| } |
| |
| @Override |
| public ServerMeta onGetServerMeta() { |
| return blockingEventService.onGetServerMeta(serviceConfig); |
| } |
| |
| @Override |
| public void close() { |
| // just do nothing here |
| } |
| |
| @Override |
| public String target() { |
| return target; |
| } |
| |
| @Override |
| public AlphaResponse send(TxEvent event) { |
| GrpcAck grpcAck = blockingEventService.onTxEvent(convertEvent(event)); |
| return new AlphaResponse(grpcAck.getAborted()); |
| } |
| |
| private GrpcTxEvent convertEvent(TxEvent event) { |
| ByteString payloads = ByteString.copyFrom(serializer.serialize(event.payloads())); |
| |
| Builder builder = GrpcTxEvent.newBuilder() |
| .setServiceName(serviceConfig.getServiceName()) |
| .setInstanceId(serviceConfig.getInstanceId()) |
| .setTimestamp(event.timestamp()) |
| .setGlobalTxId(event.globalTxId()) |
| .setLocalTxId(event.localTxId()) |
| .setParentTxId(event.parentTxId() == null ? "" : event.parentTxId()) |
| .setType(event.type().name()) |
| .setTimeout(event.timeout()) |
| .setCompensationMethod(event.compensationMethod()) |
| .setRetryMethod(event.retryMethod() == null ? "" : event.retryMethod()) |
| .setRetries(event.retries()) |
| .setPayloads(payloads); |
| |
| return builder.build(); |
| } |
| |
| private GrpcServiceConfig serviceConfig(String serviceName, String instanceId) { |
| return GrpcServiceConfig.newBuilder() |
| .setServiceName(serviceName) |
| .setInstanceId(instanceId) |
| .build(); |
| } |
| } |