001/**
002 * Copyright (c) 2015-2022, Michael Yang 杨福海 (fuhai999@gmail.com).
003 * <p>
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 * <p>
008 * http://www.apache.org/licenses/LICENSE-2.0
009 * <p>
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package io.jboot.support.seata.tcc;
017
018import com.jfinal.aop.Interceptor;
019import com.jfinal.aop.Invocation;
020import io.jboot.support.seata.JbootSeataManager;
021import io.seata.common.util.StringUtils;
022import io.seata.core.context.RootContext;
023import io.seata.core.model.BranchType;
024import io.seata.rm.tcc.api.TwoPhaseBusinessAction;
025
026import java.lang.reflect.Method;
027
028
029/**
030 * TCC Interceptor
031 * <p>
032 * 参考： https://github.com/seata/seata/blob/develop/spring/src/main/java/io/seata/spring/tcc/TccActionInterceptor.java
033 *
034 * @author zhangsen
035 */
036public class TccActionInterceptor implements Interceptor {
037
038
039    private ActionInterceptorHandler actionInterceptorHandler = new ActionInterceptorHandler();
040
041
042    @Override
043    public void intercept(Invocation inv) {
044
045        if (!JbootSeataManager.me().isEnable()) {
046            inv.invoke();
047            return;
048        }
049
050        if (!RootContext.inGlobalTransaction()) {
051            // not in transaction
052            inv.invoke();
053            return;
054        }
055
056        Method method = inv.getMethod();
057        TwoPhaseBusinessAction businessAction = method.getAnnotation(TwoPhaseBusinessAction.class);
058        //try method
059        if (businessAction != null) {
060            //save the xid
061            String xid = RootContext.getXID();
062            //clear the context
063            BranchType previousBranchType = RootContext.getBranchType();
064            if (BranchType.TCC != previousBranchType) {
065                RootContext.bindBranchType(BranchType.TCC);
066            }
067            try {
068                Object[] methodArgs = inv.getArgs();
069                //Handler the TCC Aspect
070                actionInterceptorHandler.proceed(method, methodArgs, xid, businessAction, inv);
071            } finally {
072                //if not TCC, unbind branchType
073                if (BranchType.TCC != previousBranchType) {
074                    RootContext.unbindBranchType();
075                }
076            }
077        } else {
078            inv.invoke();
079        }
080    }
081
082}