A script to log the number of HTTP connections in a Tomcat server

HTTPMBeanLogger.groovy

/**
 * 
 *   DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *  
 *   Copyright (c) 2014 C2B2 Consulting Limited. All rights reserved.
 *  
 *   The contents of this file are subject to the terms of the Common Development
 *   and Distribution License("CDDL") (collectively, the "License").  You
 *   may not use this file except in compliance with the License.  You can
 *   obtain a copy of the License at
 *   https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *  
 *   When distributing the software, include this License Header Notice in each
 *   file and include the License file at packager/legal/LICENSE.txt.
 * 
 * 
 *   Owner:  C2B2
 *   Author: Mike Croft
 *   Date:   04/10/2013
 *
 */

import groovy.jmx.builder.JmxBuilder

def port = 8090
def host = '192.168.150.154'
def fileName = 'HTTPMbean.txt'


def connection = new JmxBuilder().client(port: port, host: host)

connection.connect()

// Get the MBeanServer.
def mbeans = connection.MBeanServerConnection
 //Create GroovyMBean.
def mbean = new GroovyMBean(mbeans, 'Catalina:type=ThreadPool,name="http-nio-8080"')

def i = 0 
def logFile = new File(fileName)

while (i<10){
    
    // Print to console what's going in the file
    print Calendar.getInstance().time
    println " - $mbean.connectionCount"

    logFile.append(Calendar.getInstance().time.toString() + " - $mbean.connectionCount\r\n")
    
    sleep 1000
    i = i + 1 
    
}

println 'done'