org.apache.camel.processor.FinallyProcessor Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of camel-core Show documentation
Show all versions of camel-core Show documentation
The Core Camel Java DSL based router
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package org.apache.camel.processor;
import org.apache.camel.AsyncCallback;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.Traceable;
import org.apache.camel.util.ExchangeHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Processor to handle do finally supporting asynchronous routing engine
*
* @version
*/
public class FinallyProcessor extends DelegateAsyncProcessor implements Traceable {
private static final Logger LOG = LoggerFactory.getLogger(FinallyProcessor.class);
public FinallyProcessor(Processor processor) {
super(processor);
}
@Override
public boolean process(final Exchange exchange, final AsyncCallback callback) {
// clear exception so finally block can be executed
final Exception e = exchange.getException();
exchange.setException(null);
// but store the caught exception as a property
if (e != null) {
exchange.setProperty(Exchange.EXCEPTION_CAUGHT, e);
}
// store the last to endpoint as the failure endpoint
if (exchange.getProperty(Exchange.FAILURE_ENDPOINT) == null) {
exchange.setProperty(Exchange.FAILURE_ENDPOINT, exchange.getProperty(Exchange.TO_ENDPOINT));
}
boolean sync = processor.process(exchange, new AsyncCallback() {
public void done(boolean doneSync) {
if (e == null) {
exchange.removeProperty(Exchange.FAILURE_ENDPOINT);
} else {
// set exception back on exchange
exchange.setException(e);
exchange.setProperty(Exchange.EXCEPTION_CAUGHT, e);
}
if (!doneSync) {
// signal callback to continue routing async
ExchangeHelper.prepareOutToIn(exchange);
LOG.trace("Processing complete for exchangeId: {} >>> {}", exchange.getExchangeId(), exchange);
}
callback.done(doneSync);
}
});
return sync;
}
@Override
public String toString() {
return "Finally{" + getProcessor() + "}";
}
public String getTraceLabel() {
return "finally";
}
}