| /* |
| * 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.transaction.tcc; |
| |
| import java.lang.invoke.MethodHandles; |
| import java.lang.reflect.Method; |
| |
| import org.apache.servicecomb.pack.common.TransactionStatus; |
| import org.apache.servicecomb.pack.omega.context.OmegaContext; |
| import org.apache.servicecomb.pack.omega.context.TransactionContext; |
| import org.apache.servicecomb.pack.omega.transaction.AlphaResponse; |
| import org.apache.servicecomb.pack.omega.transaction.OmegaException; |
| import org.apache.servicecomb.pack.omega.transaction.TransactionContextHelper; |
| import org.apache.servicecomb.pack.omega.transaction.annotations.Participate; |
| import org.apache.servicecomb.pack.omega.transaction.tcc.events.ParticipationEndedEvent; |
| import org.apache.servicecomb.pack.omega.transaction.tcc.events.ParticipationStartedEvent; |
| import org.aspectj.lang.ProceedingJoinPoint; |
| import org.aspectj.lang.annotation.Around; |
| import org.aspectj.lang.annotation.Aspect; |
| import org.aspectj.lang.reflect.MethodSignature; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| @Aspect |
| public class TccParticipatorAspect extends TransactionContextHelper { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| |
| private final OmegaContext context; |
| private final TccMessageSender tccMessageSender; |
| private final ParametersContext parametersContext; |
| |
| //We need to inject the CoordinateMessageHandler for the parameter map |
| |
| public TccParticipatorAspect(TccMessageSender tccMessageSender, OmegaContext context, |
| ParametersContext parametersContext) { |
| this.context = context; |
| this.context.verify(); |
| this.tccMessageSender = tccMessageSender; |
| this.parametersContext = parametersContext; |
| } |
| |
| @Around("execution(@org.apache.servicecomb.pack.omega.transaction.annotations.Participate * *(..)) && @annotation(participate)") |
| Object advise(ProceedingJoinPoint joinPoint, Participate participate) throws Throwable { |
| Method method = ((MethodSignature) joinPoint.getSignature()).getMethod(); |
| TransactionContext transactionContext = extractTransactionContext(joinPoint.getArgs()); |
| if (transactionContext != null) { |
| populateOmegaContext(context, transactionContext); |
| } |
| |
| String localTxId = context.localTxId(); |
| String cancelMethod = callbackMethodSignature(joinPoint, participate.cancelMethod(), method); |
| String confirmMethod = callbackMethodSignature(joinPoint, participate.confirmMethod(), method); |
| |
| context.newLocalTxId(); |
| LOG.debug("Updated context {} for participate method {} ", context, method.toString()); |
| |
| try { |
| AlphaResponse response = tccMessageSender.participationStart(new ParticipationStartedEvent(context.globalTxId(), context.localTxId(), localTxId, |
| confirmMethod, cancelMethod)); |
| if(response.aborted()){ |
| throw new OmegaException("transcation has aborted: " + context.globalTxId()); |
| } |
| Object result = joinPoint.proceed(); |
| // Send the participate message back |
| tccMessageSender.participationEnd(new ParticipationEndedEvent(context.globalTxId(), context.localTxId(), localTxId, |
| confirmMethod, cancelMethod, TransactionStatus.Succeed)); |
| // Just store the parameters into the context |
| parametersContext.putParameters(context.localTxId(), joinPoint.getArgs()); |
| LOG.debug("Participate Transaction with context {} has finished.", context); |
| return result; |
| } catch (Throwable throwable) { |
| // Now we don't handle the error message |
| if(!(throwable instanceof OmegaException)){ |
| tccMessageSender.participationEnd(new ParticipationEndedEvent(context.globalTxId(), context.localTxId(), localTxId, |
| confirmMethod, cancelMethod, TransactionStatus.Failed)); |
| } |
| LOG.error("Participate Transaction with context {} failed.", context, throwable); |
| throw throwable; |
| } finally { |
| context.setLocalTxId(localTxId); |
| } |
| } |
| |
| String callbackMethodSignature(ProceedingJoinPoint joinPoint, String callbackMethod, Method tryMethod) throws NoSuchMethodException { |
| return callbackMethod.isEmpty() ? "" : |
| joinPoint.getTarget() |
| .getClass() |
| .getDeclaredMethod(callbackMethod, tryMethod.getParameterTypes()) |
| .toString(); |
| } |
| |
| @Override |
| protected Logger getLogger() { |
| return LOG; |
| } |
| } |