/**
* 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.browse;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import org.apache.camel.CamelContext;
import org.apache.camel.Component;
import org.apache.camel.Consumer;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.Producer;
import org.apache.camel.Service;
import org.apache.camel.impl.DefaultEndpoint;
import org.apache.camel.impl.DefaultProducer;
import org.apache.camel.processor.loadbalancer.LoadBalancerConsumer;
import org.apache.camel.processor.loadbalancer.TopicLoadBalancer;
import org.apache.camel.spi.BrowsableEndpoint;
/**
* An endpoint which maintains a {@link List} of {@link Exchange} instances
* which can be useful for tooling, debugging and visualising routes.
*
* @version $Revision: 736555 $
*/
public class BrowseEndpoint extends DefaultEndpoint implements BrowsableEndpoint, Service {
private List<Exchange> exchanges;
private TopicLoadBalancer loadBalancer = new TopicLoadBalancer();
// TODO: firing of property changes not implemented
private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(this);
public BrowseEndpoint(String uri, CamelContext camelContext) {
super(uri, camelContext);
}
public BrowseEndpoint(String uri, Component component) {
super(uri, component);
}
public BrowseEndpoint(String endpointUri) {
super(endpointUri);
}
public boolean isSingleton() {
return true;
}
public List<Exchange> getExchanges() {
return exchanges;
}
public TopicLoadBalancer getLoadBalancer() {
return loadBalancer;
}
public void addPropertyChangeListener(PropertyChangeListener listener) {
propertyChangeSupport.addPropertyChangeListener(listener);
}
public void removePropertyChangeListener(PropertyChangeListener listener) {
propertyChangeSupport.removePropertyChangeListener(listener);
}
public Producer createProducer() throws Exception {
return new DefaultProducer(this) {
public void process(Exchange exchange) throws Exception {
onExchange(exchange);
}
};
}
public Consumer createConsumer(Processor processor) throws Exception {
return new LoadBalancerConsumer(this, processor, loadBalancer);
}
protected List<Exchange> createExchangeList() {
return new CopyOnWriteArrayList<Exchange>();
}
/**
* Invoked on a message exchange being sent by a producer
*
* @param exchange the exchange
* @throws Exception is thrown if failed to process the exchange
*/
protected void onExchange(Exchange exchange) throws Exception {
exchanges.add(exchange);
// lets fire any consumers
loadBalancer.process(exchange);
}
public void start() throws Exception {
exchanges = createExchangeList();
}
public void stop() throws Exception {
if (exchanges != null) {
exchanges.clear();
exchanges = null;
}
}
}