86 lines
2.1 KiB
Go
86 lines
2.1 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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// Implements support for running the storagenode-updater as a Windows Service.
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//
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// The Windows Service can be created with sc.exe, e.g.
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//
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// sc.exe create storagenode-updater binpath= "C:\Users\MyUser\storagenode-updater.exe run ..."
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//go:build windows
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// +build windows
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package main
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import (
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"os"
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"time"
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"go.uber.org/zap"
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"golang.org/x/sync/errgroup"
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"golang.org/x/sys/windows/svc"
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"storj.io/private/process"
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)
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func isRunCmd() bool {
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return len(os.Args) > 1 && os.Args[1] == "run"
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}
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func main() {
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isService, err := svc.IsWindowsService()
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if err != nil {
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zap.L().Fatal("Failed to determine if session is interactive.", zap.Error(err))
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}
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if !isService || !isRunCmd() {
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process.Exec(rootCmd)
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return
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}
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err = svc.Run("storagenode-updater", &service{})
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if err != nil {
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zap.L().Fatal("Service failed.", zap.Error(err))
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}
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}
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type service struct{}
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func (m *service) Execute(args []string, r <-chan svc.ChangeRequest, changes chan<- svc.Status) (ssec bool, errno uint32) {
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const cmdsAccepted = svc.AcceptStop | svc.AcceptShutdown
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changes <- svc.Status{State: svc.StartPending}
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var group errgroup.Group
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group.Go(func() error {
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process.Exec(rootCmd)
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return nil
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})
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changes <- svc.Status{State: svc.Running, Accepts: cmdsAccepted}
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for c := range r {
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switch c.Cmd {
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case svc.Interrogate:
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zap.L().Info("Interrogate request received.")
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changes <- c.CurrentStatus
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// Testing deadlock from https://code.google.com/p/winsvc/issues/detail?id=4
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time.Sleep(100 * time.Millisecond)
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changes <- c.CurrentStatus
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case svc.Stop, svc.Shutdown:
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zap.L().Info("Stop/Shutdown request received.")
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changes <- svc.Status{State: svc.StopPending}
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// Cancel the command's root context to cleanup resources
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_, cancel := process.Ctx(runCmd)
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cancel()
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_ = group.Wait() // process.Exec does not return an error
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// After returning the Windows Service is stopped and the process terminates
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return false, 0
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default:
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zap.L().Info("Unexpected control request.", zap.Uint32("Event Type", c.EventType))
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}
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}
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return false, 0
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}
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