private bool TryKillClient(int attempt = 0)
{
const int MAX_ATTEMPTS = 5;
if (attempt == MAX_ATTEMPTS)
{
logger.Error($"Failed to kill client process within {MAX_ATTEMPTS} attempts!");
return(false);
}
logger.Info($"Killing client process with ID = {ClientProcess.Id}.");
ClientProcess.Kill();
if (ClientProcess.HasTerminated)
{
logger.Info("Client process has terminated.");
return(true);
}
else
{
logger.Warn("Failed to kill client process. Trying again...");
return(TryKillClient(++attempt));
}
}
/// <summary>
/// Tries to terminate all running client processes because otherwise the
/// client executable cannot be replaced by a newer version.
/// </summary>
private void StopClientProcesses()
{
try
{
Process [] ClientProcesses = Process.GetProcessesByName("CrawlWave.Client");
if (ClientProcesses.Length == 0)
{
//there are no client processes running
return;
}
else //try to terminate each process
{
foreach (Process ClientProcess in ClientProcesses)
{
try
{
//First try to terminate it by closing its main window.
ClientProcess.CloseMainWindow();
if (ClientProcess.HasExited)
{
//attempt to terminate the gui was successful
ClientProcess.Close();
}
else
{
//The Client is running in quiet mode, so we must kill it
//TODO: Use the remoting interface of the Client in order
//to stop it and then terminate its process.
ClientProcess.Kill();
}
}
catch (Exception e)
{
if (globals.Settings.LogLevel <= CWLogLevel.LogWarning)
{
globals.SystemLog.LogWarning("CrawlWave.Client Scheduler failed to terminate all the client processes: " + e.ToString());
}
continue; //try to terminate the rest of the processes.
}
}
}
}
catch (Exception e)
{
if (globals.Settings.LogLevel <= CWLogLevel.LogWarning)
{
globals.SystemLog.LogWarning("CrawlWave.Client Scheduler encountered an error while stoping the client processes:" + e.ToString());
}
}
}
