On Thu, Nov 23, 2017 at 12:41 AM, Rama Rao <[email protected]> wrote:
> Now if I want to graceful shutdown, do I have first call shutdown on each
> of the services added to ServiceImpl and then follow-it with a call to
> service.shutdown?
> or service.shutdown will handle both the cases?
>
There isn't a `*service*.shutdown()`, just *server* (unless you made it,
and then I won't know what it does). I think you should do things in the
opposite order: first shut down the server, then the services.
I'd expect the normal flow to be:
server.shutdown(); // This simply prevents new RPCs
server.awaitTermination(5, SECONDS); // This is the grace time
server.shutdownNow(); // This kills all RPCs
// This needs some time to queue cancellation notifications.
// Note that terminated does not imply the *application* is done processing.
// It only means the server won't issue any more work to the application.
if (!server.awaitTermination(1, SECONDS)) {
log.log(WARNING, "For some reason the server didn't shutdown promptly");
}
// After the server is terminated, all work has at least been queued onto
the server's executor.
// You can shutdown and wait on that executor if you want. You can then
also clean up services.
cleanUpServices();
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