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.interceptor;
018    
019    import org.apache.camel.CamelException;
020    import org.apache.camel.Exchange;
021    import org.apache.camel.Processor;
022    import org.apache.camel.processor.DelegateProcessor;
023    
024    public class HandleFaultInterceptor extends DelegateProcessor {
025    
026        public HandleFaultInterceptor() {
027            super();
028        }
029    
030        public HandleFaultInterceptor(Processor processor) {
031            this();
032            setProcessor(processor);
033        }
034    
035        @Override
036        public String toString() {
037            return "HandleFaultInterceptor[" + processor + "]";
038        }
039    
040        @Override
041        public void process(Exchange exchange) throws Exception {
042            if (processor == null) {
043                return;
044            }
045    
046            try {
047                processor.process(exchange);
048            } catch (Exception e) {
049                exchange.setException(e);
050            }
051    
052            handleFault(exchange);
053        }
054    
055        /**
056         * Handles the fault message by converting it to an Exception
057         */
058        protected void handleFault(Exchange exchange) {
059            // Take the fault message out before we keep on going
060            if (exchange.hasFault()) {
061                final Object faultBody = exchange.getFault().getBody();
062                if (faultBody != null && exchange.getException() == null) {
063                    // remove fault as we are converting it to an exception
064                    exchange.setFault(null);
065                    if (faultBody instanceof Exception) {
066                        exchange.setException((Exception) faultBody);
067                    } else {
068                        // wrap it in an exception
069                        exchange.setException(new CamelException(faultBody.toString()));
070                    }
071                }
072            }
073        }
074    
075    }