// Shutdown handles graceful cleanup of server functions before exiting DVID.
// This may not be so graceful if the chunk handler uses cgo since the interrupt
// may be caught during cgo execution.
func Shutdown() {
// Stop accepting HTTP requests.
httpAvail = false
// Wait for chunk handlers.
waits := 0
for {
active := MaxChunkHandlers - len(HandlerToken)
if waits >= 20 {
dvid.Infof("Already waited for 20 seconds. Continuing with shutdown...")
break
} else if active > 0 {
dvid.Infof("Waiting for %d chunk handlers to finish...\n", active)
waits++
} else {
dvid.Infof("No chunk handlers active. Proceeding...\n")
break
}
time.Sleep(1 * time.Second)
}
dvid.Infof("Waiting 5 seconds for any HTTP requests to drain...\n")
time.Sleep(5 * time.Second)
datastore.Shutdown()
dvid.BlockOnActiveCgo()
rpc.Shutdown()
dvid.Shutdown()
shutdownCh <- struct{}{}
}
// Shutdown handles graceful cleanup of server functions before exiting DVID.
// This may not be so graceful if the chunk handler uses cgo since the interrupt
// may be caught during cgo execution.
func Shutdown() {
waits := 0
for {
active := MaxChunkHandlers - len(HandlerToken)
if waits >= 20 {
log.Printf("Already waited for 20 seconds. Continuing with shutdown...")
break
} else if active > 0 {
log.Printf("Waiting for %d chunk handlers to finish...\n", active)
waits++
} else {
log.Println("No chunk handlers active...")
break
}
time.Sleep(1 * time.Second)
}
datastore.Shutdown()
storage.Shutdown()
dvid.BlockOnActiveCgo()
}
