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.Exchange;
020import org.apache.camel.Processor;
021import org.apache.camel.model.InterceptFromDefinition;
022import org.apache.camel.model.ProcessorDefinition;
023import org.apache.camel.model.SetHeaderDefinition;
024import org.apache.camel.spi.RouteContext;
025import org.apache.camel.support.ExpressionAdapter;
026
027public class InterceptFromReifier extends InterceptReifier<InterceptFromDefinition> {
028
029    public InterceptFromReifier(ProcessorDefinition<?> definition) {
030        super((InterceptFromDefinition)definition);
031    }
032
033    @Override
034    @SuppressWarnings({"unchecked", "rawtypes"})
035    public Processor createProcessor(RouteContext routeContext) throws Exception {
036        // insert a set header definition so we can set the intercepted endpoint
037        // uri as a header
038        // this allows us to use the same header for both the interceptFrom and
039        // interceptSendToEndpoint
040        SetHeaderDefinition headerDefinition = new SetHeaderDefinition(Exchange.INTERCEPTED_ENDPOINT, new ExpressionAdapter() {
041            public Object evaluate(Exchange exchange, Class type) {
042                if (exchange.getFromEndpoint() != null) {
043                    return exchange.getFromEndpoint().getEndpointUri();
044                } else {
045                    return null;
046                }
047            }
048
049            public String toString() {
050                return "";
051            }
052        });
053        definition.getOutputs().add(0, headerDefinition);
054
055        return this.createChildProcessor(routeContext, true);
056    }
057
058}