public JobRunner(JobRunnerContext context)
{
_context = context ?? throw new ArgumentNullException(nameof(context));
_runningTask = null;
_stoppingTask = null;
_lastLoop = InstantUtils.Now;
}
private void RecycleRunner(JobRunnerContext subscription)
{
// Create a new JobRunner for the subscription anyway.
// If there's a runner present, replace it and stop the original one.
_runners.AddOrUpdate(subscription.Id,
id =>
{
// addValueFactory; If the value is not present in the dictionary
var newRunner = new JobRunner(subscription);
newRunner.Start(null);
return(newRunner);
},
(id, runner) =>
{
// updateValueFactory; If there is a runner in the dictionary
// Stop the currently-running (probably already dead) runner to make sure it doesn't
// come back to life and cause problems
if (runner.Running)
{
runner.Stop();
}
var newRunner = new JobRunner(subscription);
newRunner.Start(null);
return(newRunner);
});
}
private void CheckJobLiveliness(JobRunnerContext subscription)
{
if (!_runners.TryGetValue(subscription.Id, out var runner))
{
_logger.Information("No JobRunner for {SubscriptionId} yet, starting one.", subscription.Id);
RecycleRunner(subscription);
return;
}
if (!runner.Running && !_stopping)
{
_logger.Warning("JobRunner for {SubscriptionId} appears to be stopped. Recycling.", subscription.Id);
RecycleRunner(subscription);
}
if (runner.MillisSinceLastLoop > Timing.Monitor.SecondsBeforeConsiderRunningJobUnresponsive * 1000)
{
_logger.Warning("JobRunner for {SubscriptionId} is not responding. Recycling.", subscription.Id);
RecycleRunner(subscription);
}
}
public JobIteration(JobRunnerContext context, JobProgress currentProgress)
{
_context = context ?? throw new ArgumentNullException(nameof(context));
Progress = currentProgress;
}