public override async Task Run(Func <bool> shutdown)
{
string closeReason = "Module shutdown";
try {
var taskRun = SendVoidRequest(new RunMsg());
while (!shutdown() && !taskRun.IsCompleted && !taskReceive.IsCompleted)
{
await Task.Delay(TimeSpan.FromSeconds(1));
}
if (taskRun.IsCompleted)
{
closeReason = $"External module {moduleName} returned from Run unexpectedly.";
logger.Warn(closeReason);
}
else if (taskReceive.IsFaulted || process.HasExited)
{
Thread.Sleep(500); // no need for async wait here
closeReason = $"External module {moduleName} terminated unexpectedly.";
throw new Exception(closeReason);
}
else
{
var taskShutdown = SendVoidRequest(new ShutdownMsg());
Timestamp tStart = Timestamp.Now;
const int timeout = 20;
while (!taskRun.IsCompleted)
{
if (taskShutdown.IsFaulted || process.HasExited)
{
logger.Warn("External module terminated unexpectedly during shutdown.");
break;
}
if (Timestamp.Now - tStart > Duration.FromSeconds(timeout))
{
logger.Warn($"Module did not return from Run within {timeout} seconds. Killing process...");
break;
}
await Task.WhenAny(taskRun, Task.Delay(2000));
if (!taskRun.IsCompleted)
{
long secondsUntilTimeout = (tStart.AddSeconds(timeout) - Timestamp.Now).TotalMilliseconds / 1000;
logger.Info("Waiting for Run completion (timeout in {0} seconds)...", secondsUntilTimeout);
}
}
}
}
finally {
connection.Close(closeReason);
StopProcess(process);
process = null;
}
}
public async override Task InitAbort()
{
if (process == null)
{
return; // abort already happened in Init()
}
var taskAbort = SendVoidRequest(new InitAbortMsg());
try {
Timestamp tStart = Timestamp.Now;
const int timeout = 12;
while (!taskAbort.IsCompleted)
{
if (process.HasExited)
{
logger.Warn("External module terminated unexpectedly during init abort.");
break;
}
if (Timestamp.Now - tStart > Duration.FromSeconds(timeout))
{
logger.Warn($"Module did not return from InitAbort within {timeout} seconds. Killing process...");
break;
}
await Task.WhenAny(taskAbort, Task.Delay(2000));
if (!taskAbort.IsCompleted)
{
long secondsUntilTimeout = (tStart.AddSeconds(timeout) - Timestamp.Now).TotalMilliseconds / 1000;
logger.Info("Waiting for InitAbort completion (timeout in {0} seconds)...", secondsUntilTimeout);
}
}
}
finally {
connection.Close("Init abort");
StopProcess(process);
process = null;
}
}
