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.AsyncProcessor;
021    import org.apache.camel.Exchange;
022    import org.apache.camel.Traceable;
023    import org.apache.camel.support.ServiceSupport;
024    import org.apache.camel.util.AsyncProcessorHelper;
025    import org.apache.camel.util.ObjectHelper;
026    
027    /**
028     * The processor which sets an {@link Exception} on the {@link Exchange}
029     */
030    public class ThrowExceptionProcessor extends ServiceSupport implements AsyncProcessor, Traceable {
031        private final Exception exception;
032    
033        public ThrowExceptionProcessor(Exception exception) {
034            ObjectHelper.notNull(exception, "exception", this);
035            this.exception = exception;
036        }
037    
038        public void process(Exchange exchange) throws Exception {
039            AsyncProcessorHelper.process(this, exchange);
040        }
041    
042        public boolean process(Exchange exchange, AsyncCallback callback) {
043            exchange.setException(exception);
044            callback.done(true);
045            return true;
046        }
047    
048        public String getTraceLabel() {
049            return "throwException[" + exception.getClass().getSimpleName() + "]";
050        }
051    
052        public String toString() {
053            return "ThrowException";
054        }
055    
056        @Override
057        protected void doStart() throws Exception {
058            // noop
059        }
060    
061        @Override
062        protected void doStop() throws Exception {
063            // noop
064        }
065    }