/**
* 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.component.connector;
import org.apache.camel.AsyncCallback;
import org.apache.camel.AsyncProcessor;
import org.apache.camel.Endpoint;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.Producer;
import org.apache.camel.impl.DefaultAsyncProducer;
import org.apache.camel.util.AsyncProcessorConverterHelper;
import org.apache.camel.util.ServiceHelper;
/**
* Connector {@link Producer} which is capable of performing before and after custom processing
* while processing (ie sending the message).
*/
public class ConnectorProducer extends DefaultAsyncProducer {
private final AsyncProcessor producer;
private final Processor beforeProducer;
private final Processor afterProducer;
public ConnectorProducer(Endpoint endpoint, Producer producer, Processor beforeProducer, Processor afterProducer) {
super(endpoint);
this.producer = AsyncProcessorConverterHelper.convert(producer);
this.beforeProducer = beforeProducer;
this.afterProducer = afterProducer;
}
@Override
public boolean process(Exchange exchange, final AsyncCallback callback) {
// setup callback for after producer
AsyncCallback delegate = doneSync -> {
if (afterProducer != null) {
try {
afterProducer.process(exchange);
} catch (Throwable e) {
exchange.setException(e);
}
}
callback.done(doneSync);
};
// perform any before producer
if (beforeProducer != null) {
try {
beforeProducer.process(exchange);
} catch (Throwable e) {
exchange.setException(e);
callback.done(true);
return true;
}
}
return producer.process(exchange, delegate);
}
@Override
protected void doStart() throws Exception {
ServiceHelper.startServices(beforeProducer, producer, afterProducer);
}
@Override
protected void doStop() throws Exception {
ServiceHelper.stopServices(beforeProducer, producer, afterProducer);
}
@Override
protected void doSuspend() throws Exception {
ServiceHelper.suspendService(producer);
}
@Override
protected void doResume() throws Exception {
ServiceHelper.resumeService(producer);
}
@Override
protected void doShutdown() throws Exception {
ServiceHelper.stopAndShutdownServices(beforeProducer, producer, afterProducer);
}
}