| /* |
| * 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; |
| |
| import java.lang.invoke.MethodHandles; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| import org.apache.servicecomb.pack.omega.context.OmegaContext; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class CallbackContext { |
| private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| |
| private final Map<String, CallbackContextInternal> contexts = new ConcurrentHashMap<>(); |
| private final OmegaContext omegaContext; |
| |
| public CallbackContext(OmegaContext omegaContext) { |
| this.omegaContext = omegaContext; |
| } |
| |
| public void addCallbackContext(String key, Method compensationMethod, Object target) { |
| compensationMethod.setAccessible(true); |
| contexts.put(key, new CallbackContextInternal(target, compensationMethod)); |
| } |
| |
| public void apply(String globalTxId, String localTxId, String callbackMethod, Object... payloads) { |
| CallbackContextInternal contextInternal = contexts.get(callbackMethod); |
| String oldGlobalTxId = omegaContext.globalTxId(); |
| String oldLocalTxId = omegaContext.localTxId(); |
| try { |
| omegaContext.setGlobalTxId(globalTxId); |
| omegaContext.setLocalTxId(localTxId); |
| contextInternal.callbackMethod.invoke(contextInternal.target, payloads); |
| LOG.info("Callback transaction with global tx id [{}], local tx id [{}]", globalTxId, localTxId); |
| } catch (IllegalAccessException | InvocationTargetException e) { |
| LOG.error( |
| "Pre-checking for callback method " + contextInternal.callbackMethod.toString() |
| + " was somehow skipped, did you forget to configure callback method checking on service startup?", |
| e); |
| } finally { |
| omegaContext.setGlobalTxId(oldGlobalTxId); |
| omegaContext.setLocalTxId(oldLocalTxId); |
| } |
| } |
| |
| private static final class CallbackContextInternal { |
| private final Object target; |
| |
| private final Method callbackMethod; |
| |
| private CallbackContextInternal(Object target, Method callbackMethod) { |
| this.target = target; |
| this.callbackMethod = callbackMethod; |
| } |
| } |
| } |