Add control db interface for triggering hooks, add shutdown/restart hooks

core/events.go

@@ -0,0 +1,46 @@
+package core
+
+import (
+	"context"
+
+	"github.com/safing/portbase/log"
+	"github.com/safing/portbase/modules"
+)
+
+const (
+	eventShutdown = "shutdown"
+	eventRestart  = "restart"
+	restartCode   = 23
+)
+
+func registerEvents() {
+	module.RegisterEvent(eventShutdown)
+	module.RegisterEvent(eventRestart)
+}
+
+func registerEventHooks() error {
+	err := module.RegisterEventHook("core", eventShutdown, "execute shutdown", shutdown)
+	if err != nil {
+		return err
+	}
+
+	err = module.RegisterEventHook("core", eventRestart, "execute shutdown", restart)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func shutdown(ctx context.Context, _ interface{}) error {
+	log.Warning("core: user requested shutdown")
+	go modules.Shutdown() //nolint:errcheck
+	return nil
+}
+
+func restart(ctx context.Context, data interface{}) error {
+	log.Info("core: user requested restart")
+	modules.SetExitStatusCode(restartCode)
+	go modules.Shutdown() //nolint:errcheck
+	return nil
+}