snapshot of https://github.com/nats-io/nats-server.git (main, 2026-09-15; blobs > 131072B omitted)

server/signal_windows.go

@@ -0,0 +1,110 @@
+// Copyright 2012-2025 The NATS Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package server
+
+import (
+	"fmt"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"golang.org/x/sys/windows/svc"
+	"golang.org/x/sys/windows/svc/mgr"
+)
+
+// Signal Handling
+func (s *Server) handleSignals() {
+	if s.getOpts().NoSigs {
+		return
+	}
+	c := make(chan os.Signal, 1)
+
+	signal.Notify(c, os.Interrupt, syscall.SIGTERM)
+
+	go func() {
+		for {
+			select {
+			case sig := <-c:
+				s.Debugf("Trapped %q signal", sig)
+				s.Shutdown()
+				os.Exit(0)
+			case <-s.quitCh:
+				return
+			}
+		}
+	}()
+}
+
+// ProcessSignal sends the given signal command to the running nats-server service.
+// If service is empty, this signals the "nats-server" service. This returns an
+// error is the given service is not running or the command is invalid.
+func ProcessSignal(command Command, service string) error {
+	if service == "" {
+		service = serviceName
+	}
+
+	m, err := mgr.Connect()
+	if err != nil {
+		return err
+	}
+	defer m.Disconnect()
+
+	s, err := m.OpenService(service)
+	if err != nil {
+		return fmt.Errorf("could not access service: %v", err)
+	}
+	defer s.Close()
+
+	var (
+		cmd svc.Cmd
+		to  svc.State
+	)
+
+	switch command {
+	case CommandStop, CommandQuit:
+		cmd = svc.Stop
+		to = svc.Stopped
+	case CommandReopen:
+		cmd = reopenLogCmd
+		to = svc.Running
+	case CommandReload:
+		cmd = svc.ParamChange
+		to = svc.Running
+	case commandLDMode:
+		cmd = ldmCmd
+		to = svc.Running
+	default:
+		return fmt.Errorf("unknown signal %q", command)
+	}
+
+	status, err := s.Control(cmd)
+	if err != nil {
+		return fmt.Errorf("could not send control=%d: %v", cmd, err)
+	}
+
+	timeout := time.Now().Add(10 * time.Second)
+	for status.State != to {
+		if timeout.Before(time.Now()) {
+			return fmt.Errorf("timeout waiting for service to go to state=%d", to)
+		}
+		time.Sleep(300 * time.Millisecond)
+		status, err = s.Query()
+		if err != nil {
+			return fmt.Errorf("could not retrieve service status: %v", err)
+		}
+	}
+
+	return nil
+}