public void Start(MonitoredServices serviceCollection)
{
if (_processingThread != null && _processingThread.ThreadState == ThreadState.Running)
{
_log.Error("Cannot start, thread still running!");
State = ServiceMonitorState.Doomed;
return;
}
State = ServiceMonitorState.Starting;
_services = new List <ServiceInfo>();
foreach (var svc in serviceCollection)
{
var s = svc as MonitoredService;
var installCmd = string.Empty;
if (!string.IsNullOrEmpty(s.InstallCommandLine))
{
installCmd = s.InstallCommandLine;
}
else if (!string.IsNullOrEmpty(s.ServiceExecutablePath))
{
//topshelf service. install with 'install' param.
installCmd = $"{s.ServiceExecutablePath} install -servicename:{s.ServiceName} --autostart";
}
_services.Add(new ServiceInfo
{
ServiceName = s.ServiceName,
InstallCommandLine = installCmd,
MonitorInterval = s.CheckFrequencyValue,
NextCheck = DateTime.Now.AddSeconds(s.CheckFrequencyValue)
});
}
_processingThread = new Thread(new ThreadStart(MonitorServices));
_processingThread.Start();
}
//Main thread method
public void MonitorServices()
{
State = ServiceMonitorState.Monitoring;
try
{
while (State == ServiceMonitorState.Monitoring)
{
var servicesToCheck = _services.Where(s => s.NextCheck <= DateTime.Now);
if (servicesToCheck.Any())
{
foreach (var svc in servicesToCheck)
{
//ensure we stop soon as if requested.
if (State != ServiceMonitorState.Monitoring)
{
continue;
}
CheckService(svc);
svc.NextCheck = DateTime.Now.AddSeconds(svc.MonitorInterval);
}
}
var nextCheck = servicesToCheck.OrderBy(s => s.NextCheck).FirstOrDefault()?.NextCheck;
//sleep for a short while to avoid eating CPU....
Thread.Sleep(500);
}//Main While loop.
//If we've come out of this, then we've stopped.
State = ServiceMonitorState.Stopped;
}
catch (Exception ex)
{
State = ServiceMonitorState.Doomed;
_log.Error($"exception raised While Monitoring! - {ex.Message}");
}
}
public ServiceMonitorStateEventArgs(ServiceMonitorState state)
{
State = state;
}
public void Stop()
{
State = ServiceMonitorState.Stopping;
}
