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Fix regression from #14623 - use debug SVC handler only on interactive sessions (#15210) (#15211) 

Backport #15210

Unfortunately #14623 changed from the deprecated IsInteractiveSession to
IsWindowsService without recognising that they are the complement of
each other.

This means that Windows SVC control is not working correctly. This PR
adds some Tracing statements but also fixes the bug.

Fix #15159

Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath 2021-03-31 20:49:46 +01:00 committed by GitHub
parent 92b2883058
commit 2bc759518e
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 22 additions and 3 deletions
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25
modules/graceful/manager_windows.go
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@ -68,17 +68,19 @@ func (g *Manager) start() {
// Set the running state
g.setState(stateRunning)
if skip, _ := strconv.ParseBool(os.Getenv("SKIP_MINWINSVC")); skip {
log.Trace("Skipping SVC check as SKIP_MINWINSVC is set")
return
}
// Make SVC process
run := svc.Run
isInteractive, err := svc.IsWindowsService()
isWindowsService, err := svc.IsWindowsService()
if err != nil {
log.Error("Unable to ascertain if running as an Interactive Session: %v", err)
log.Error("Unable to ascertain if running as an Windows Service: %v", err)
return
}
if isInteractive {
if !isWindowsService {
log.Trace("Not running a service ... using the debug SVC manager")
run = debug.Run
}
go func() {
@ -94,38 +96,49 @@ func (g *Manager) Execute(args []string, changes <-chan svc.ChangeRequest, statu
status <- svc.Status{State: svc.StartPending, WaitHint: uint32(setting.StartupTimeout / time.Millisecond)}
}
log.Trace("Awaiting server start-up")
// Now need to wait for everything to start...
if !g.awaitServer(setting.StartupTimeout) {
log.Trace("... start-up failed ... Stopped")
return false, 1
}
log.Trace("Sending Running state to SVC")
// We need to implement some way of svc.AcceptParamChange/svc.ParamChange
status <- svc.Status{
State: svc.Running,
Accepts: svc.AcceptStop | svc.AcceptShutdown | acceptHammerCode,
}
log.Trace("Started")
waitTime := 30 * time.Second
loop:
for {
select {
case <-g.ctx.Done():
log.Trace("Shutting down")
g.DoGracefulShutdown()
waitTime += setting.GracefulHammerTime
break loop
case <-g.shutdownRequested:
log.Trace("Shutting down")
waitTime += setting.GracefulHammerTime
break loop
case change := <-changes:
switch change.Cmd {
case svc.Interrogate:
log.Trace("SVC sent interrogate")
status <- change.CurrentStatus
case svc.Stop, svc.Shutdown:
log.Trace("SVC requested shutdown - shutting down")
g.DoGracefulShutdown()
waitTime += setting.GracefulHammerTime
break loop
case hammerCode:
log.Trace("SVC requested hammer - shutting down and hammering immediately")
g.DoGracefulShutdown()
g.DoImmediateHammer()
break loop
@ -134,6 +147,8 @@ loop:
}
}
}
log.Trace("Sending StopPending state to SVC")
status <- svc.Status{
State: svc.StopPending,
WaitHint: uint32(waitTime / time.Millisecond),
@ -145,8 +160,10 @@ hammerLoop:
case change := <-changes:
switch change.Cmd {
case svc.Interrogate:
log.Trace("SVC sent interrogate")
status <- change.CurrentStatus
case svc.Stop, svc.Shutdown, hammerCmd:
log.Trace("SVC requested hammer - hammering immediately")
g.DoImmediateHammer()
break hammerLoop
default:
@ -156,6 +173,8 @@ hammerLoop:
break hammerLoop
}
}
log.Trace("Stopped")
return false, 0
}