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.processor;
018
019import org.apache.camel.AsyncCallback;
020import org.apache.camel.AsyncProcessor;
021import org.apache.camel.Exchange;
022import org.apache.camel.Message;
023import org.apache.camel.Traceable;
024import org.apache.camel.spi.IdAware;
025import org.apache.camel.support.ServiceSupport;
026import org.apache.camel.util.AsyncProcessorHelper;
027
028/**
029 * A processor which removes one ore more headers from the IN or OUT message
030 */
031public class RemoveHeadersProcessor extends ServiceSupport implements AsyncProcessor, Traceable, IdAware {
032    private String id;
033    private final String pattern;
034    private final String[] excludePattern;
035
036    public RemoveHeadersProcessor(String pattern, String[] excludePattern) {
037        this.pattern = pattern;
038        this.excludePattern = excludePattern;
039    }
040
041    public void process(Exchange exchange) throws Exception {
042        AsyncProcessorHelper.process(this, exchange);
043    }
044
045    @Override
046    public boolean process(Exchange exchange, AsyncCallback callback) {
047        try {
048            Message message = exchange.hasOut() ? exchange.getOut() : exchange.getIn();
049            message.removeHeaders(pattern, excludePattern);
050        } catch (Exception e) {
051            exchange.setException(e);
052        }
053
054        callback.done(true);
055        return true;
056    }
057
058    @Override
059    public String toString() {
060        return "RemoveHeaders(" + pattern + ")";
061    }
062
063    public String getTraceLabel() {
064        return "removeHeaders[" + pattern + "]";
065    }
066
067    public String getId() {
068        return id;
069    }
070
071    public void setId(String id) {
072        this.id = id;
073    }
074
075    public String getPattern() {
076        return pattern;
077    }
078
079    public String[] getExcludePattern() {
080        return excludePattern;
081    }
082
083    @Override
084    protected void doStart() throws Exception {
085        // noop
086    }
087
088    @Override
089    protected void doStop() throws Exception {
090        // noop
091    }
092}