// this will send either Ctrl-C or Ctrl-Break to runner.listener
// Ctrl-C will be used for OnStop()
// Ctrl-Break will be used for OnShutdown()
private void SendCtrlSignalToRunnerListener(uint signal)
{
try
{
if (RunnerListener != null && !RunnerListener.HasExited)
{
// Try to let the runner process know that we are stopping
//Attach service process to console of Runner.Listener process. This is needed,
//because windows service doesn't use its own console.
if (AttachConsole((uint)RunnerListener.Id))
{
//Prevent main service process from stopping because of Ctrl + C event with SetConsoleCtrlHandler
SetConsoleCtrlHandler(null, true);
try
{
//Generate console event for current console with GenerateConsoleCtrlEvent (processGroupId should be zero)
GenerateConsoleCtrlEvent(signal, 0);
//Wait for the process to finish (give it up to 30 seconds)
RunnerListener.WaitForExit(30000);
}
finally
{
//Disconnect from console and restore Ctrl+C handling by main process
FreeConsole();
SetConsoleCtrlHandler(null, false);
}
}
// if runner is still running, kill it
if (!RunnerListener.HasExited)
{
RunnerListener.Kill();
}
}
}
catch (Exception exception)
{
// InvalidOperationException is thrown when there is no process associated to the process object.
// There is no process to kill, Log the exception and shutdown the service.
// If we don't handle this here, the service get into a state where it can neither be stoped nor restarted (Error 1061)
WriteException(exception);
}
}
protected override void OnStart(string[] args)
{
RunningLoop = Task.Run(
() =>
{
try
{
bool stopping;
WriteInfo("Starting Actions Runner Service");
TimeSpan timeBetweenRetries = TimeSpan.FromSeconds(5);
lock (ServiceLock)
{
stopping = Stopping;
}
while (!stopping)
{
WriteInfo("Starting Actions Runner listener");
lock (ServiceLock)
{
RunnerListener = CreateRunnerListener();
RunnerListener.OutputDataReceived += RunnerListener_OutputDataReceived;
RunnerListener.ErrorDataReceived += RunnerListener_ErrorDataReceived;
RunnerListener.Start();
RunnerListener.BeginOutputReadLine();
RunnerListener.BeginErrorReadLine();
}
RunnerListener.WaitForExit();
int exitCode = RunnerListener.ExitCode;
// exit code 0 and 1 need stop service
// exit code 2 and 3 need restart runner
switch (exitCode)
{
case 0:
Stopping = true;
WriteInfo(Resource.RunnerExitWithoutError);
break;
case 1:
Stopping = true;
WriteInfo(Resource.RunnerExitWithTerminatedError);
break;
case 2:
WriteInfo(Resource.RunnerExitWithError);
break;
case 3:
WriteInfo(Resource.RunnerUpdateInProcess);
var updateResult = HandleRunnerUpdate();
if (updateResult == RunnerUpdateResult.Succeed)
{
WriteInfo(Resource.RunnerUpdateSucceed);
}
else if (updateResult == RunnerUpdateResult.Failed)
{
WriteInfo(Resource.RunnerUpdateFailed);
Stopping = true;
}
else if (updateResult == RunnerUpdateResult.SucceedNeedRestart)
{
WriteInfo(Resource.RunnerUpdateRestartNeeded);
_restart = true;
ExitCode = int.MaxValue;
Stop();
}
break;
default:
WriteInfo(Resource.RunnerExitWithUndefinedReturnCode);
break;
}
if (Stopping)
{
ExitCode = exitCode;
Stop();
}
else
{
// wait for few seconds before restarting the process
Thread.Sleep(timeBetweenRetries);
}
lock (ServiceLock)
{
RunnerListener.OutputDataReceived -= RunnerListener_OutputDataReceived;
RunnerListener.ErrorDataReceived -= RunnerListener_ErrorDataReceived;
RunnerListener.Dispose();
RunnerListener = null;
stopping = Stopping;
}
}
}
catch (Exception exception)
{
WriteException(exception);
ExitCode = 99;
Stop();
}
});
}