Main.java

/*
 *
 * Copyright 2011 Performize-IT LTD.
 *
 * Licensed 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 com.performizeit.threadtop;

import com.performizeit.jmxsupport.JMXConnection;
import java.util.ArrayList;
import com.lexicalscope.jewel.cli.CliFactory;

public class Main {

    public static void main(String args[]) throws Exception {
        if (args.length < 1) {
            String cliMessage = CliFactory.createCli(ThreadTopOptions.class).getHelpMessage();
            String correctMessage = cliMessage.replace("ARGUMENTS...", "<ProcessId> | <hostname:port> | <ip:port>"   );
            System.out.println(correctMessage);
            System.out.println("Threadtop can connect to a process on the same machine with pid\n"+
                    "And via JMX port for a remote process.\n"+  
                    "To enable remote JMX and the following command line params:\n   " +
                    "-Dcom.sun.management.jmxremote\n   " +
                    "-Dcom.sun.management.jmxremote.port=[port]\n   " +
                    "-Dcom.sun.management.jmxremote.authenticate=false\n   " +
                    "-Dcom.sun.management.jmxremote.ssl=false\n");
            System.exit(1);
        }





        ThreadTopOptions opts = CliFactory.parseArguments(ThreadTopOptions.class, args);
        String passwd = opts.getPassword();
        ArrayList<JMXConnection> servers = new ArrayList<JMXConnection>();
        if (opts.getConectionStringList().size() ==0) {
            System.out.println("Missing process id or host:port to connect");
            System.out.println(CliFactory.createCli(ThreadTopOptions.class).getHelpMessage());
            System.out.println("Enable remote JMX:\n   -Dcom.sun.management.jmxremote\n   -Dcom.sun.management.jmxremote.port=[port]\n   -Dcom.sun.management.jmxremote.authenticate=false\n   -Dcom.sun.management.jmxremote.ssl=false\n");
            System.exit(1);
           }
        for (String hostPortUser : opts.getConectionStringList()) {


            JMXConnection server;
            try {
                Integer.parseInt(hostPortUser);
                server = new JMXConnection(hostPortUser);
            } catch (NumberFormatException e) {
                server = new JMXConnection(hostPortUser, passwd);
            }

            servers.add(server);
        }

        int stackTraceEntriesNo = opts.getStackTraceEntriesNo();
        // if stackTrace option is selected, set default stackTraceEntries to 1
        if(opts.getStackTraceEntriesNo() == 0 && opts.isPrintStackTrace()) {
            stackTraceEntriesNo = 1;
        }
        ThreadTop calc = new ThreadTop(servers, opts.getTimeToMeasure(), opts.getNum(), opts.getSort(), opts.isMeasureThreadCPU(), opts.isMeasureThreadAlloc(),
                opts.isMeasureThreadContention(), opts.getRegExp(), stackTraceEntriesNo);

        calc.getContendedThreads(opts.getIterations());
    }
}