ActiveMQ example source code file (BstatCommand.java)

This example ActiveMQ source code file (BstatCommand.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

bstat, display, display, examples, if, jmx, jmx, jvm, performs, set, set, string, string, sun, util

The ActiveMQ BstatCommand.java source code

/**
 * 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.activemq.console.command;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class BstatCommand extends QueryCommand {

    protected String[] helpFile = new String[] {
        "Task Usage: activemq-admin bstat [bstat-options] [broker-name]",
        "Description: Performs a predefined query that displays useful statistics regarding the specified broker.",
        "             If no broker name is specified, it will try and select from all registered brokers.",
        "",
        "Bstat Options:",
        "    --jmxurl <url>                Set the JMX URL to connect to.",
        "    --pid <pid>                   Set the pid to connect to (only on Sun JVM).",            
        "    --jmxuser <user>              Set the JMX user used for authenticating.",
        "    --jmxpassword <password>      Set the JMX password used for authenticating.",
        "    --jmxlocal                    Use the local JMX server instead of a remote one.",
        "    --version                     Display the version information.",
        "    -h,-?,--help                  Display the query broker help information.",
        "",
        "Examples:",
        "    activemq-admin bstat localhost",
        "        - Display a summary of statistics for the broker 'localhost'"
    };
    
    /**
     * Performs a predefiend query option
     * @param tokens - command arguments
     * @throws Exception
     */
    protected void runTask(List<String> tokens) throws Exception {
        List<String> queryTokens = new ArrayList();
        // Find the first non-option token
        String brokerName = "*";
        for (Iterator i = tokens.iterator(); i.hasNext();) {
            String token = (String)i.next();
            if (!token.startsWith("-")) {
                brokerName = token;
                break;
            } else {
                // Re-insert options
                queryTokens.add(token);
            }
        }

        // Build the predefined option
        queryTokens.add("--objname");
        queryTokens.add("Type=*,BrokerName=" + brokerName);
        queryTokens.add("-xQTopic=ActiveMQ.Advisory.*");
        queryTokens.add("--vuew");
        queryTokens.add("Type,BrokerName,Destination,ConnectorName,EnqueueCount,"
                        + "DequeueCount,TotalEnqueueCount,TotalDequeueCount,Messages,"
                        + "TotalMessages,ConsumerCount,TotalConsumerCount,DispatchQueueSize");

        // Call the query command
        super.runTask(queryTokens);
    }

    /**
     * Print the help messages for the browse command
     */
    protected void printHelp() {
        context.printHelp(helpFile);
    }

}