/
GrpcClientMessageSender.java
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/
GrpcClientMessageSender.java
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/*
*
* 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.saga.omega.connector.grpc;
import java.util.function.Function;
import org.apache.servicecomb.saga.omega.context.ServiceConfig;
import org.apache.servicecomb.saga.omega.transaction.AlphaResponse;
import org.apache.servicecomb.saga.omega.transaction.MessageDeserializer;
import org.apache.servicecomb.saga.omega.transaction.MessageHandler;
import org.apache.servicecomb.saga.omega.transaction.MessageSender;
import org.apache.servicecomb.saga.omega.transaction.MessageSerializer;
import org.apache.servicecomb.saga.omega.transaction.TxEvent;
import org.apache.servicecomb.saga.pack.contract.grpc.GrpcAck;
import org.apache.servicecomb.saga.pack.contract.grpc.GrpcServiceConfig;
import org.apache.servicecomb.saga.pack.contract.grpc.GrpcTxEvent;
import org.apache.servicecomb.saga.pack.contract.grpc.GrpcTxEvent.Builder;
import org.apache.servicecomb.saga.pack.contract.grpc.TxEventServiceGrpc;
import org.apache.servicecomb.saga.pack.contract.grpc.TxEventServiceGrpc.TxEventServiceBlockingStub;
import org.apache.servicecomb.saga.pack.contract.grpc.TxEventServiceGrpc.TxEventServiceStub;
import com.google.protobuf.ByteString;
import io.grpc.ManagedChannel;
public class GrpcClientMessageSender implements MessageSender {
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 GrpcClientMessageSender(
String address,
ManagedChannel channel,
MessageSerializer serializer,
MessageDeserializer deserializer,
ServiceConfig serviceConfig,
Function<MessageSender, Runnable> errorHandlerFactory,
MessageHandler handler) {
this.target = address;
this.asyncEventService = TxEventServiceGrpc.newStub(channel);
this.blockingEventService = TxEventServiceGrpc.newBlockingStub(channel);
this.serializer = serializer;
this.compensateStreamObserver = new GrpcCompensateStreamObserver(handler, errorHandlerFactory.apply(this), deserializer);
this.serviceConfig = serviceConfig(serviceConfig.serviceName(), serviceConfig.instanceId());
}
@Override
public void onConnected() {
asyncEventService.onConnected(serviceConfig, compensateStreamObserver);
}
@Override
public void onDisconnected() {
blockingEventService.onDisconnected(serviceConfig);
}
@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())
.setPayloads(payloads);
return builder.build();
}
private GrpcServiceConfig serviceConfig(String serviceName, String instanceId) {
return GrpcServiceConfig.newBuilder()
.setServiceName(serviceName)
.setInstanceId(instanceId)
.build();
}
}