| /* |
| * 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.fsm; |
| |
| import static java.util.Collections.emptyMap; |
| |
| import io.grpc.stub.StreamObserver; |
| import java.lang.invoke.MethodHandles; |
| import java.util.Date; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| import org.apache.servicecomb.pack.alpha.core.OmegaCallback; |
| import org.apache.servicecomb.pack.alpha.core.fsm.CompensateAckType; |
| import org.apache.servicecomb.pack.alpha.core.fsm.event.TxCompensateAckEvent; |
| import org.apache.servicecomb.pack.alpha.core.fsm.event.base.BaseEvent; |
| import org.apache.servicecomb.pack.alpha.core.fsm.channel.ActorEventChannel; |
| import org.apache.servicecomb.pack.common.EventType; |
| import org.apache.servicecomb.pack.contract.grpc.GrpcAck; |
| import org.apache.servicecomb.pack.contract.grpc.GrpcCompensateCommand; |
| import org.apache.servicecomb.pack.contract.grpc.GrpcServiceConfig; |
| import org.apache.servicecomb.pack.contract.grpc.GrpcTxEvent; |
| import org.apache.servicecomb.pack.contract.grpc.ServerMeta; |
| import org.apache.servicecomb.pack.contract.grpc.TxEventServiceGrpc.TxEventServiceImplBase; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class GrpcSagaEventService extends TxEventServiceImplBase { |
| 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 Map<String, Map<String, OmegaCallback>> omegaCallbacks; |
| private final ActorEventChannel actorEventChannel; |
| private final ServerMeta serverMeta; |
| |
| public GrpcSagaEventService(ActorEventChannel actorEventChannel, |
| Map<String, Map<String, OmegaCallback>> omegaCallbacks, ServerMeta serverMeta) { |
| this.actorEventChannel = actorEventChannel; |
| this.omegaCallbacks = omegaCallbacks; |
| this.serverMeta = serverMeta; |
| } |
| |
| @Override |
| 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); |
| } |
| |
| @Override |
| public void onError(Throwable throwable) { |
| LOG.error(throwable.getMessage()); |
| } |
| |
| @Override |
| public void onCompleted() { |
| // Do nothing here |
| } |
| }; |
| } |
| |
| // TODO: 2018/1/5 connect is async and disconnect is sync, meaning callback may not be registered on disconnected |
| @Override |
| public void onDisconnected(GrpcServiceConfig request, StreamObserver<GrpcAck> responseObserver) { |
| OmegaCallback callback = omegaCallbacks.getOrDefault(request.getServiceName(), emptyMap()) |
| .remove(request.getInstanceId()); |
| |
| if (callback != null) { |
| callback.disconnect(); |
| } |
| |
| responseObserver.onNext(ALLOW); |
| responseObserver.onCompleted(); |
| } |
| |
| @Override |
| public void onTxEvent(GrpcTxEvent message, StreamObserver<GrpcAck> responseObserver) { |
| if(LOG.isDebugEnabled()){ |
| LOG.debug("onText {}",message); |
| } |
| boolean ok = true; |
| BaseEvent event = null; |
| if (message.getType().equals(EventType.SagaStartedEvent.name())) { |
| event = org.apache.servicecomb.pack.alpha.core.fsm.event.SagaStartedEvent.builder() |
| .serviceName(message.getServiceName()) |
| .instanceId(message.getInstanceId()) |
| .globalTxId(message.getGlobalTxId()) |
| .createTime(new Date()) |
| .timeout(message.getTimeout()).build(); |
| } else if (message.getType().equals(EventType.SagaEndedEvent.name())) { |
| event = org.apache.servicecomb.pack.alpha.core.fsm.event.SagaEndedEvent.builder() |
| .serviceName(message.getServiceName()) |
| .instanceId(message.getInstanceId()) |
| .createTime(new Date()) |
| .globalTxId(message.getGlobalTxId()).build(); |
| } else if (message.getType().equals(EventType.SagaAbortedEvent.name())) { |
| event = org.apache.servicecomb.pack.alpha.core.fsm.event.SagaAbortedEvent.builder() |
| .serviceName(message.getServiceName()) |
| .instanceId(message.getInstanceId()) |
| .globalTxId(message.getGlobalTxId()) |
| .createTime(new Date()) |
| .payloads(message.getPayloads().toByteArray()).build(); |
| } else if (message.getType().equals(EventType.SagaTimeoutEvent.name())) { |
| event = org.apache.servicecomb.pack.alpha.core.fsm.event.SagaTimeoutEvent.builder() |
| .serviceName(message.getServiceName()) |
| .instanceId(message.getInstanceId()) |
| .createTime(new Date()) |
| .globalTxId(message.getGlobalTxId()).build(); |
| } else if (message.getType().equals(EventType.TxStartedEvent.name())) { |
| event = org.apache.servicecomb.pack.alpha.core.fsm.event.TxStartedEvent.builder() |
| .serviceName(message.getServiceName()) |
| .instanceId(message.getInstanceId()) |
| .globalTxId(message.getGlobalTxId()) |
| .localTxId(message.getLocalTxId()) |
| .parentTxId(message.getParentTxId().isEmpty() ? null : message.getParentTxId()) |
| .compensationMethod(message.getCompensationMethod()) |
| .retryMethod(message.getRetryMethod()) |
| .retries(message.getRetries()) |
| .createTime(new Date()) |
| .payloads(message.getPayloads().toByteArray()).build(); |
| } else if (message.getType().equals(EventType.TxEndedEvent.name())) { |
| event = org.apache.servicecomb.pack.alpha.core.fsm.event.TxEndedEvent.builder() |
| .serviceName(message.getServiceName()) |
| .instanceId(message.getInstanceId()) |
| .globalTxId(message.getGlobalTxId()) |
| .parentTxId(message.getParentTxId()) |
| .localTxId(message.getLocalTxId()).build(); |
| } else if (message.getType().equals(EventType.TxAbortedEvent.name())) { |
| event = org.apache.servicecomb.pack.alpha.core.fsm.event.TxAbortedEvent.builder() |
| .serviceName(message.getServiceName()) |
| .instanceId(message.getInstanceId()) |
| .globalTxId(message.getGlobalTxId()) |
| .parentTxId(message.getParentTxId()) |
| .localTxId(message.getLocalTxId()) |
| .createTime(new Date()) |
| .payloads(message.getPayloads().toByteArray()).build(); |
| } else if (message.getType().equals(EventType.TxCompensatedEvent.name())) { |
| event = org.apache.servicecomb.pack.alpha.core.fsm.event.TxCompensatedEvent.builder() |
| .serviceName(message.getServiceName()) |
| .instanceId(message.getInstanceId()) |
| .globalTxId(message.getGlobalTxId()) |
| .parentTxId(message.getParentTxId()) |
| .createTime(new Date()) |
| .localTxId(message.getLocalTxId()).build(); |
| } else if (message.getType().equals(EventType.TxCompensateAckSucceedEvent.name())) { |
| event = TxCompensateAckEvent.builder() |
| .succeed(true) |
| .serviceName(message.getServiceName()) |
| .instanceId(message.getInstanceId()) |
| .globalTxId(message.getGlobalTxId()) |
| .parentTxId(message.getParentTxId()) |
| .createTime(new Date()) |
| .localTxId(message.getLocalTxId()).build(); |
| omegaCallbacks.get(message.getServiceName()).get(message.getInstanceId()) |
| .getAck(CompensateAckType.Succeed); |
| } else if (message.getType().equals(EventType.TxCompensateAckFailedEvent.name())) { |
| event = TxCompensateAckEvent.builder() |
| .succeed(false) |
| .serviceName(message.getServiceName()) |
| .instanceId(message.getInstanceId()) |
| .globalTxId(message.getGlobalTxId()) |
| .parentTxId(message.getParentTxId()) |
| .createTime(new Date()) |
| .localTxId(message.getLocalTxId()).build(); |
| omegaCallbacks.get(message.getServiceName()).get(message.getInstanceId()) |
| .getAck(CompensateAckType.Failed); |
| } else { |
| ok = false; |
| } |
| if (event != null) { |
| actorEventChannel.send(event); |
| } |
| responseObserver.onNext(ok ? ALLOW : REJECT); |
| responseObserver.onCompleted(); |
| } |
| |
| @Override |
| public void onGetServerMeta(GrpcServiceConfig request, StreamObserver<ServerMeta> responseObserver){ |
| responseObserver.onNext(this.serverMeta); |
| responseObserver.onCompleted(); |
| } |
| } |