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Merge pull request #1475 from luthermonson/svc-manager-win
Update service watching logic for windows service manager
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| // +build !windows | ||
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| package windows | ||
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| func StartService() error { | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| // +build windows | ||
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| package windows | ||
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| import ( | ||
| "os" | ||
| "time" | ||
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| "github.com/Freman/eventloghook" | ||
| "github.com/rancher/k3s/pkg/version" | ||
| "github.com/sirupsen/logrus" | ||
| "golang.org/x/sys/windows/svc" | ||
| "golang.org/x/sys/windows/svc/eventlog" | ||
| ) | ||
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| type service struct{} | ||
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| var Service = &service{} | ||
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| func (h *service) Execute(_ []string, requests <-chan svc.ChangeRequest, statuses chan<- svc.Status) (bool, uint32) { | ||
| statuses <- svc.Status{State: svc.StartPending} | ||
| statuses <- svc.Status{State: svc.Running, Accepts: svc.AcceptStop | svc.AcceptShutdown} | ||
| for c := range requests { | ||
| switch c.Cmd { | ||
| case svc.Interrogate: | ||
| statuses <- c.CurrentStatus | ||
| case svc.Stop, svc.Shutdown: | ||
| statuses <- svc.Status{State: svc.StopPending} | ||
| logrus.Info("Windows Service is shutting down in 5s") | ||
| time.Sleep(5 * time.Second) | ||
| return false, 0 | ||
| } | ||
| } | ||
| return false, 0 | ||
| } | ||
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| func StartService() error { | ||
| if ok, err := svc.IsWindowsService(); err != nil || !ok { | ||
| return err | ||
| } | ||
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| elog, err := eventlog.Open(version.Program) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| logrus.AddHook(eventloghook.NewHook(elog)) | ||
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| stop := make(chan struct{}) | ||
| go watchService(stop) | ||
| go func() { | ||
| defer close(stop) | ||
| if err := svc.Run(version.Program, Service); err != nil { | ||
| logrus.Fatalf("Windows Service error, exiting: %s", err) | ||
| } | ||
| }() | ||
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| return nil | ||
| } | ||
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| func watchService(stop chan struct{}) { | ||
| <-stop // pause for service to be stopped | ||
| ok, err := svc.IsWindowsService() | ||
| if err != nil { | ||
| logrus.Warnf("Error trying to determine if running as a Windows Service: %s", err) | ||
| } | ||
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| if ok { | ||
| logrus.Infof("Windows Service is shutting down") | ||
| os.Exit(0) | ||
| } | ||
| } |