Files
nats-server/server/signal_windows.go
Ivan Kozlovic bdf5cf63b3 Shutdown on Ctrl+C
Changed code on Windows to not use svc code if running in interactive
mode. The original code was running svc.debug.Run() which uses service
code (Execute()) but from the command line. We don't need that.

Also reduced salt on bcrypt password for a config file that started
to cause failures due to test taking too long to finish.

Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
2019-11-14 20:05:32 -07:00

105 lines
2.3 KiB
Go

// Copyright 2012-2019 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"
"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)
go func() {
for sig := range c {
s.Debugf("Trapped %q signal", sig)
s.Shutdown()
os.Exit(0)
}
}()
}
// 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
}