Azure Triggered Webjob - Detecting when webjob stops

Question

I am developing a triggered webjob that use TimerTrigger.

Before the webjob stops, I need to dispose some objects but I don\'t know how to trigger the \"webjob stop\

Answer 1

I was recently trying to figure out how to do this without the WebJobs SDK which contains the WebJobShutdownWatcher, this is what I found out.

What the underlying runtime does (and what the WebJobsShutdownWatcher referenced above checks), is create a local file at the location specified by the environment variable %WEBJOBS_SHUTDOWN_FILE%. If this file exists, it is essentially the runtime's signal to the webjob that it must shutdown within a configurable wait period (default of 5 seconds for continuous jobs, 30 for triggered jobs), otherwise the runtime will kill the job.

The net effect is, if you are not using the Azure WebJobs SDK, which contains the WebJobsShutdownWatcher as described above, you can still achieve graceful shutdown of your Azure Web Job by monitoring for the shutdown file on an interval shorter than the configured wait period.

Additional details, including how to configure the wait period, are described here: https://github.com/projectkudu/kudu/wiki/WebJobs#graceful-shutdown