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 */ 017package org.apache.camel.reifier; 018 019import org.apache.camel.Processor; 020import org.apache.camel.Service; 021import org.apache.camel.model.PolicyDefinition; 022import org.apache.camel.model.ProcessorDefinition; 023import org.apache.camel.processor.WrapProcessor; 024import org.apache.camel.spi.Policy; 025import org.apache.camel.spi.RouteContext; 026import org.apache.camel.util.ObjectHelper; 027 028public class PolicyReifier extends ProcessorReifier<PolicyDefinition> { 029 030 public PolicyReifier(ProcessorDefinition<?> definition) { 031 super((PolicyDefinition)definition); 032 } 033 034 @Override 035 public Processor createProcessor(RouteContext routeContext) throws Exception { 036 Policy policy = resolvePolicy(routeContext); 037 ObjectHelper.notNull(policy, "policy", definition); 038 039 // before wrap 040 policy.beforeWrap(routeContext, definition); 041 042 // create processor after the before wrap 043 Processor childProcessor = this.createChildProcessor(routeContext, true); 044 045 // wrap 046 Processor target = policy.wrap(routeContext, childProcessor); 047 048 if (!(target instanceof Service)) { 049 // wrap the target so it becomes a service and we can manage its 050 // lifecycle 051 target = new WrapProcessor(target, childProcessor); 052 } 053 return target; 054 } 055 056 protected Policy resolvePolicy(RouteContext routeContext) { 057 if (definition.getPolicy() != null) { 058 return definition.getPolicy(); 059 } 060 // reuse code on transacted definition to do the resolution 061 return TransactedReifier.resolvePolicy(routeContext, definition.getRef(), definition.getType()); 062 } 063 064}