[service] Fix starting and stopping of SPN

service/instance.go

@@ -619,7 +619,7 @@ func (i *Instance) shutdown(exitCode int) {
 
 // Stopping returns whether the instance is shutting down.
 func (i *Instance) Stopping() bool {
-	return i.ctx.Err() == nil
+	return i.ctx.Err() != nil
 }
 
 // Stopped returns a channel that is triggered when the instance has shut down.

spn/access/module.go

@@ -86,22 +86,24 @@ func start() error {
 
 			enabled := config.GetAsBool("spn/enable", false)
 			if enabled() {
+				log.Info("spn: starting SPN")
 				module.mgr.Go("ensure SPN is started", module.instance.SPNGroup().EnsureStartedWorker)
 			} else {
+				log.Info("spn: stopping SPN")
 				module.mgr.Go("ensure SPN is stopped", module.instance.SPNGroup().EnsureStoppedWorker)
 			}
 			return false, nil
 		})
 
+		// Load tokens from database.
+		loadTokens()
+
 		// Check if we need to enable SPN now.
 		enabled := config.GetAsBool("spn/enable", false)
 		if enabled() {
 			module.mgr.Go("ensure SPN is started", module.instance.SPNGroup().EnsureStartedWorker)
 		}
 
-		// Load tokens from database.
-		loadTokens()
-
 		// Register new task.
 		module.updateAccountWorkerMgr.Delay(1 * time.Minute)
 	}