trunk/components/camel-jmx/src/main/java/org/apache/camel/component/jmx/JMXComponent.java

/**
 * 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.jmx;

import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;

import org.apache.camel.Endpoint;
import org.apache.camel.impl.DefaultComponent;
import org.apache.camel.util.EndpointHelper;

/**
 * Component for connecting JMX Notification events to a camel route.
 * The endpoint created from this component allows users to specify
 * an ObjectName to listen to and any JMX Notifications received from
 * that object will flow into the route.
 */
public class JMXComponent extends DefaultComponent {

    @Override
    protected Endpoint createEndpoint(String aUri, String aRemaining,
                                      Map<String, Object> aParameters) throws Exception {
        JMXEndpoint endpoint = new JMXEndpoint(aUri, this);
        // use the helper class to set all of the properties
        EndpointHelper.setReferenceProperties(getCamelContext(), endpoint, aParameters);
        EndpointHelper.setProperties(getCamelContext(), endpoint, aParameters);

        endpoint.setServerURL(aRemaining);

        // we may have some extra params left over for the object properties hashtable
        // these properties need to be consumed or the framework will throw an exception
        // for unused params
        if (!aParameters.isEmpty()) {
            Hashtable<String, String> objectProperties = new Hashtable<String, String>();

            for (Iterator<Entry<String, Object>> it = aParameters.entrySet().iterator(); it.hasNext();) {
                Entry<String, Object> entry = it.next();
                if (entry.getKey().startsWith("key.")) {
                    objectProperties.put(entry.getKey().substring("key.".length()), entry.getValue().toString());
                    it.remove();
                }
            }

            endpoint.setObjectProperties(objectProperties);
        }

        if (endpoint.getObjectDomain() == null) {
            throw new IllegalArgumentException("Must specify domain");
        }

        if (endpoint.getObjectName() == null && endpoint.getObjectProperties() == null) {
            throw new IllegalArgumentException("Must specify object name or object properties");
        }

        return endpoint;
    }

}