resourceMonitor.Main.java Source code

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Here is the source code for resourceMonitor.Main.java

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// ---------------------------------------------------------------------------
// Copyright 2012 Mauktik Gandhi
//
// 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 resourceMonitor;

import java.util.Timer;
import java.util.concurrent.ConcurrentLinkedQueue;

import org.apache.commons.daemon.*;
import org.apache.log4j.Logger;

public class Main implements Daemon {
    private static Logger logger = Logger.getLogger(Main.class.getName());
    private Timer monitoringTimer = null;
    private Timer uploadResultsTimer = null;
    private MonitoringTask monitoringTask = null;

    @Override
    public void destroy() {
        logger.debug("Executing destroy");
        this.monitoringTimer = null;
        this.uploadResultsTimer = null;
    }

    @Override
    public void init(DaemonContext arg0) throws DaemonInitException, Exception {
        logger.debug("Executing init");
        this.monitoringTimer = new Timer();
        this.uploadResultsTimer = new Timer();
    }

    @Override
    public void start() throws Exception {
        logger.debug("Executing start");
        ConcurrentLinkedQueue<AggregatedResults> resultQueue = new ConcurrentLinkedQueue<AggregatedResults>();
        Configuration configuration = new Configuration(new SystemInfo());
        MonitorResults results = new MonitorResults(resultQueue);

        logger.debug("Starting monitoring and update result timers and tasks");
        this.monitoringTask = new MonitoringTask(configuration, results);
        this.monitoringTimer.schedule(this.monitoringTask, 0l, (configuration.getCollectionPeriod()));
        this.uploadResultsTimer.schedule((new UploadResultsTask(configuration, resultQueue)), 0l,
                (configuration.getUploadResultsPeriod()));
    }

    @Override
    public void stop() throws Exception {
        logger.debug("Executing stop. Cancelling monitoring and update result timers");
        this.monitoringTimer.cancel();
        this.uploadResultsTimer.cancel();

        if (this.monitoringTask != null) {
            this.monitoringTask.stop();
        }
    }
}