TreeWalker3.java

/**
 * The MIT License
 * Copyright © 2010 JmxTrans team
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.googlecode.jmxtrans.example;

import com.googlecode.jmxtrans.model.OutputWriter;
import com.googlecode.jmxtrans.model.OutputWriterAdapter;
import com.googlecode.jmxtrans.model.OutputWriterFactory;
import com.googlecode.jmxtrans.model.Query;
import com.googlecode.jmxtrans.model.Result;
import com.googlecode.jmxtrans.model.Server;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.management.AttributeNotFoundException;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanInfo;
import javax.management.MBeanServerConnection;
import javax.management.ObjectName;
import javax.management.remote.JMXConnector;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

import static com.google.common.collect.ImmutableList.copyOf;
import static com.google.common.collect.Maps.newHashMap;

/**
 * Walks a JMX tree and prints out all of the unique typenames and their
 * attributes.
 * 
 * This is a good test of the core engine of JmxTrans to ensure that it covers
 * all cases.
 * 
 * @author jon
 */
public class TreeWalker3 {

	private static final Logger log = LoggerFactory.getLogger(TreeWalker3.class);

	/** */
	public static void main(String[] args) throws Exception {
		Server server = Server.builder().setHost("w2").setPort("1105").build();

		JMXConnector conn = null;
		try {
			conn = server.getServerConnection();
			MBeanServerConnection mbeanServer = conn.getMBeanServerConnection();

			TreeWalker3 tw = new TreeWalker3();
			tw.walkTree(mbeanServer, server);
		} catch (IOException e) {
			log.error("Problem processing queries for server: " + server.getHost() + ":" + server.getPort(), e);
		} finally {
			if (conn != null) {
				conn.close();
			}
		}
	}

	public void walkTree(MBeanServerConnection connection, Server server) throws Exception {

		// key here is null, null returns everything!
		Set<ObjectName> mbeans = connection.queryNames(null, null);

		Map<String, String> output = newHashMap();

		for (ObjectName name : mbeans) {
			MBeanInfo info = connection.getMBeanInfo(name);
			MBeanAttributeInfo[] attrs = info.getAttributes();

			Query.Builder queryBuilder = Query.builder()
					.setObj(name.getCanonicalName());
			ResultCapture resultCapture = new ResultCapture();
			queryBuilder.addOutputWriterFactory(resultCapture);

			for (MBeanAttributeInfo attrInfo : attrs) {
				queryBuilder.addAttr(attrInfo.getName());
			}

			Query query = queryBuilder.build();

			try {
				Iterable<Result> results = server.execute(query);
				query.runOutputWritersForQuery(server, results);
			} catch (AttributeNotFoundException anfe) {
				log.error("Error", anfe);
			}

			for (Result result : resultCapture.results) {
				output.put(result.getTypeName(), query.getAttr().toString());
			}
		}

		for (Entry<String, String> entry : output.entrySet()) {
			log.debug(entry.getKey());
			log.debug(entry.getValue());
			log.debug("-----------------------------------------");
		}
	}

	private static final class ResultCapture extends OutputWriterAdapter implements OutputWriterFactory {

		private List<Result> results;

		@Override
		public void doWrite(Server server, Query query, Iterable<Result> results) throws Exception {
			this.results = copyOf(results);
		}

		@Override
		public OutputWriter create() {
			return this;
		}
	}
}