async Task <object> Restarting(object message)
{
// we can't directly switch to Preparing upon receive of Restart message,
// since in Preparing step we delete/create the files which are used
// in Copying state and so we need to wait until all background jobs
// are *actually* terminated (or failed)
switch (message)
{
case Activate _:
if (TerminateAllJobs())
{
await Become(Preparing);
}
break;
case BackgroundJobFailed _:
case BackgroundJobTerminated _:
if (!Jobs.Active().Any())
{
await Become(Preparing);
}
break;
default:
return(Unhandled);
}
return(Done);
}
bool TerminateAllJobs()
{
var activeJobs = Jobs.Active();
if (!activeJobs.Any())
{
return(true);
}
Array.ForEach(activeJobs, job => job.Terminate());
return(false);
}