Poller.cs :  » Build-Systems » CruiseControl.NET » ThoughtWorks » CruiseControl » CCTrayLib » Monitoring » C# / CSharp Open Source

using System.Diagnostics;
using System.Timers;

namespace ThoughtWorks.CruiseControl.CCTrayLib.Monitoring{
  /// <summary>
  ///  Polls an IPollable thing
  /// </summary>
  public class Poller
  {
    private Timer timer;
    private IPollable itemToPoll;

    public Poller(int pollIntervalSeconds, IPollable itemToPoll)
    {
      this.itemToPoll = itemToPoll;
      timer = new Timer(pollIntervalSeconds*1000);
      timer.AutoReset = false;
      timer.Elapsed += new ElapsedEventHandler(Timer_Elapsed);
    }


    private void Timer_Elapsed(object args, ElapsedEventArgs e)
    {
      try
      {
        itemToPoll.OnPollStarting();
        Debug.WriteLine("Polling...");
        itemToPoll.Poll();
      }
      finally
      {
        timer.Start();
      }
    }

    public void Start()
    {
      timer.Stop();
      // Fire the timer straight away rather than waiting for poll interval
      Timer_Elapsed(null, null);
    }

    public void Stop()
    {
      timer.Stop();
    }
  }
}