net.osgiliath.helpers.camel.ThrownExceptionMessageToInBodyProcessor.java Source code

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Here is the source code for net.osgiliath.helpers.camel.ThrownExceptionMessageToInBodyProcessor.java

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package net.osgiliath.helpers.camel;

/*
 * #%L
 * net.osgiliath.helpers.cxf.exception.handling
 * %%
 * Copyright (C) 2013 Osgiliath corp
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */

import java.io.StringReader;

import net.osgiliath.helpers.cxf.exception.handling.ExceptionMappingConstants;

import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.component.http.HttpOperationFailedException;
import org.jdom2.Document;
import org.jdom2.input.SAXBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Camel processor which copy the message of an exception to the message body.
 * 
 * @author Charlie
 * 
 */

public class ThrownExceptionMessageToInBodyProcessor implements Processor {
    /**
     * The Logger.
     */
    private static final Logger LOG = LoggerFactory.getLogger(ThrownExceptionMessageToInBodyProcessor.class);

    /*
     * (non-Javadoc)
     * 
     * @see org.apache.camel.Processor#process(org.apache.camel.Exchange)
     */
    @Override
    public void process(Exchange exchange) throws Exception {
        final HttpOperationFailedException exception = exchange.getProperty(Exchange.EXCEPTION_CAUGHT,
                HttpOperationFailedException.class);
        if (null != exception
                && null != exception.getResponseHeaders().get(ExceptionMappingConstants.EXCEPTION_BODY_HEADER)) {
            final String body = exception.getResponseHeaders().get(ExceptionMappingConstants.EXCEPTION_BODY_HEADER);
            LOG.info("Catched error in route: " + body);
            final SAXBuilder sxb = new SAXBuilder();
            final Document doc = sxb.build(new StringReader(body));
            exchange.getIn()
                    .setBody(doc.getRootElement().getChild(ExceptionMappingConstants.EXCEPTION_MESSAGE).getText());
        }
    }

}