private void TerminatePlugin(PluginInfo plugin)
{
lock (_pluginsSync)
{
var exePath = Const.GetPluginExePath(plugin.Name);
if (plugin.Process == null)
{
// stop any processes left from the previous agent launch, if any. normally this should not happen
var processName = Path.GetFileNameWithoutExtension(exePath);
var processes = Process.GetProcessesByName(processName);
foreach (var process in processes)
{
KillProcess(process);
}
}
else
{
KillProcess(plugin.Process);
plugin.Process = null;
}
}
}
private void StopPlugin(PluginInfo plugin)
{
lock (_pluginsSync)
{
SendPluginStopSignal(plugin);
var startTime = DateTime.UtcNow;
while ((DateTime.UtcNow - startTime) < WaitPluginPeriod)
{
if (!plugin.IsStarted)
return;
Thread.Sleep(TimeSpan.FromSeconds(1));
}
TerminatePlugin(plugin);
}
}
private void SendPluginStopSignal(PluginInfo plugin)
{
lock (_pluginsSync)
{
if (!plugin.IsStarted)
return;
ReportEvent("Stop plugin: " + plugin.Name);
try
{
// send signal to close
var eventName = Const.GetStopEventName(plugin.Process.Id);
var stopEvent = EventWaitHandle.OpenExisting(eventName);
stopEvent.Set();
}
catch (WaitHandleCannotBeOpenedException)
{
}
catch (Exception exc)
{
Report(exc);
}
}
}
private void EnsurePluginStarted(PluginInfo plugin)
{
try
{
if (plugin.IsStarted)
return;
ReportEvent("Start plugin: " + plugin.Name);
var exePath = Const.GetPluginExePath(plugin.Name);
var version = FileVersionInfo.GetVersionInfo(exePath).FileVersion;
ReportEvent(string.Format("Plugin version: {0} {1}", plugin.Name, version));
var startInfo = new ProcessStartInfo(exePath)
{
UseShellExecute = false,
RedirectStandardOutput = true,
CreateNoWindow = true,
RedirectStandardInput = true,
};
var process = Process.Start(startInfo);
plugin.Process = process;
}
catch (Exception exc)
{
Report(exc);
}
}
private void StopPlugin(PluginInfo plugin)
{
SendPluginStopSignal(plugin);
Thread.Sleep(WaitPluginPeriod);
TerminatePlugin(plugin);
}
private void EnsurePluginStarted(PluginInfo plugin)
{
if (plugin.Process != null)
return;
ReportEvent("Start plugin: " + plugin.Name);
var exePath = Const.GetPluginExePath(plugin.Name);
var startInfo = new ProcessStartInfo(exePath)
{
UseShellExecute = false,
RedirectStandardOutput = true,
CreateNoWindow = true,
RedirectStandardInput = true,
};
var process = Process.Start(startInfo);
plugin.Process = process;
}
