| /* |
| * |
| * 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.transport.resttemplate; |
| |
| import static org.apache.servicecomb.pack.omega.context.OmegaContext.GLOBAL_TX_ID_KEY; |
| import static org.apache.servicecomb.pack.omega.context.OmegaContext.LOCAL_TX_ID_KEY; |
| |
| import java.lang.invoke.MethodHandles; |
| |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.apache.servicecomb.pack.omega.context.OmegaContext; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.web.servlet.HandlerInterceptor; |
| import org.springframework.web.servlet.ModelAndView; |
| |
| class TransactionHandlerInterceptor implements HandlerInterceptor { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| |
| private final OmegaContext omegaContext; |
| |
| TransactionHandlerInterceptor(OmegaContext omegaContext) { |
| this.omegaContext = omegaContext; |
| } |
| |
| @Override |
| public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) { |
| if (omegaContext != null) { |
| String globalTxId = request.getHeader(GLOBAL_TX_ID_KEY); |
| if (globalTxId == null) { |
| LOG.debug("Cannot inject transaction ID, no such header: {}", GLOBAL_TX_ID_KEY); |
| } else { |
| omegaContext.setGlobalTxId(globalTxId); |
| omegaContext.setLocalTxId(request.getHeader(LOCAL_TX_ID_KEY)); |
| } |
| } else { |
| LOG.debug("Cannot inject transaction ID, as the OmegaContext is null."); |
| } |
| return true; |
| } |
| |
| @Override |
| public void postHandle(HttpServletRequest request, HttpServletResponse response, Object o, ModelAndView mv) { |
| } |
| |
| @Override |
| public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object o, Exception e) { |
| if (omegaContext != null) { |
| omegaContext.clear(); |
| } |
| } |
| } |