private ServiceState state; // Current service state
/// <summary>
/// Constructor.
/// </summary>
public AppService()
{
this.udpServer = null;
this.state = ServiceState.Stopped;
// Prepare the service to accept remote ServiceControl commands.
base.Open();
}
public void Initialize()
{
NetTrace.Start();
NetTrace.Enable(MsgRouter.TraceSubsystem, 1);
AsyncTracker.Enable = false;
AsyncTracker.Start();
broadcastServer = new UdpBroadcastServer(new UdpBroadcastServerSettings(), null, null);
}
public void Cleanup()
{
if (broadcastServer != null)
{
broadcastServer.Close();
broadcastServer = null;
}
NetTrace.Stop();
AsyncTracker.Stop();
}
/// <summary>
/// Handles the performance counter installation if they don't
/// already exist.
/// </summary>
/// <returns>The application's <see cref="PerfCounterSet" />.</returns>
public static PerfCounterSet InstallPerfCounters()
{
bool exists = PerformanceCounterCategory.Exists(Const.BroadcastServerPerf);
PerfCounterSet perfCounters;
perfCounters = new PerfCounterSet(false, true, Const.BroadcastServerPerf, Const.BroadcastServerName);
if (!exists)
{
UdpBroadcastServer.InstallPerfCounters(perfCounters, null);
perfCounters.Install();
}
return(perfCounters);
}
/// <summary>
/// Starts the service, associating it with an <see cref="IServiceHost" /> instance.
/// </summary>
/// <param name="serviceHost">The service user interface.</param>
/// <param name="args">Command line arguments.</param>
public void Start(IServiceHost serviceHost, string[] args)
{
lock (syncLock)
{
if (udpServer != null)
{
return; // Already started
}
// Global initialization
NetTrace.Start();
Program.Config = new Config("LillTek.Datacenter.BroadcastServer");
Program.InstallPerfCounters();
// Service initialization
this.serviceHost = serviceHost;
SysLog.LogInformation("Broadcast Server v{0} Start", Helper.GetVersionString());
try
{
udpServer = new UdpBroadcastServer("LillTek.Datacenter.BroadcastServer", Program.PerfCounters, null);
state = ServiceState.Running;
}
catch (Exception e)
{
if (udpServer != null)
{
udpServer.Close();
udpServer = null;
}
SysLog.LogException(e);
throw;
}
}
}
/// <summary>
/// Stops the service immediately, terminating any user activity.
/// </summary>
public void Stop()
{
lock (syncLock)
{
if (state == ServiceState.Stopped)
{
return;
}
SysLog.LogInformation("Broadcast Server Stop");
SysLog.Flush();
base.Close();
state = ServiceState.Stopped;
if (udpServer != null)
{
udpServer.Close();
udpServer = null;
}
Program.PerfCounters.Zero();
}
}
