001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.camel.processor; 018 019 import org.apache.camel.AsyncCallback; 020 import org.apache.camel.Exchange; 021 import org.apache.camel.Processor; 022 import org.apache.camel.spi.RouteContext; 023 import org.apache.camel.spi.UnitOfWork; 024 025 /** 026 * This processor tracks the current {@link RouteContext} while processing the {@link Exchange}. 027 * This ensures that the {@link Exchange} have details under which route its being currently processed. 028 */ 029 public class RouteContextProcessor extends DelegateAsyncProcessor { 030 031 private final RouteContext routeContext; 032 033 public RouteContextProcessor(RouteContext routeContext, Processor processor) { 034 super(processor); 035 this.routeContext = routeContext; 036 } 037 038 @Override 039 protected boolean processNext(final Exchange exchange, final AsyncCallback callback) { 040 // push the current route context 041 final UnitOfWork unitOfWork = exchange.getUnitOfWork(); 042 if (unitOfWork != null) { 043 unitOfWork.pushRouteContext(routeContext); 044 } 045 046 boolean sync = processor.process(exchange, new AsyncCallback() { 047 public void done(boolean doneSync) { 048 try { 049 // pop the route context we just used 050 if (unitOfWork != null) { 051 unitOfWork.popRouteContext(); 052 } 053 } catch (Exception e) { 054 exchange.setException(e); 055 } finally { 056 callback.done(doneSync); 057 } 058 } 059 }); 060 061 return sync; 062 } 063 064 @Override 065 public String toString() { 066 return "RouteContextProcessor[" + processor + "]"; 067 } 068 069 }