Merge 'shutdown' and 'offline' states

Move the 'shutdown' state code to the 'offline' state, to match the
removal of the 'shutdown' state from the OpenAPI definition.

internal/manager/api_impl/workers.go

@@ -149,7 +149,7 @@ func (f *Flamenco) SignOff(e echo.Context) error {
 	w := requestWorkerOrPanic(e)
 	prevStatus := w.Status
 	w.Status = api.WorkerStatusOffline
-	if w.StatusRequested == api.WorkerStatusShutdown {
+	if w.StatusRequested == api.WorkerStatusOffline {
 		w.StatusRequested = ""
 	}
 

internal/worker/state_offline.go

@@ -11,11 +11,11 @@ import (
 	"git.blender.org/flamenco/pkg/api"
 )
 
-func (w *Worker) gotoStateShutdown(context.Context) {
+func (w *Worker) gotoStateOffline(context.Context) {
 	w.stateMutex.Lock()
 	defer w.stateMutex.Unlock()
 
-	w.state = api.WorkerStatusShutdown
+	w.state = api.WorkerStatusOffline
 
 	logger := log.With().Int("pid", os.Getpid()).Logger()
 	proc, err := os.FindProcess(os.Getpid())
@@ -26,7 +26,7 @@ func (w *Worker) gotoStateShutdown(context.Context) {
 	logger.Warn().Msg("sending our own process an interrupt signal")
 	err = proc.Signal(os.Interrupt)
 	if err != nil {
-		logger.Fatal().Err(err).Msg("unable to find send interrupt signal to our own process")
+		logger.Fatal().Err(err).Msg("unable to send interrupt signal to our own process")
 	}
 }
 
@@ -34,7 +34,7 @@ func (w *Worker) gotoStateShutdown(context.Context) {
 // Does NOT actually peform a shutdown; is intended to be called while shutdown is in progress.
 func (w *Worker) SignOff(ctx context.Context) {
 	w.stateMutex.Lock()
-	w.state = api.WorkerStatusShutdown
+	w.state = api.WorkerStatusOffline
 	logger := log.With().Str("state", string(w.state)).Logger()
 	w.stateMutex.Unlock()
 

internal/worker/statemachine.go

@@ -14,7 +14,7 @@ import (
 func (w *Worker) setupStateMachine() {
 	w.stateStarters[api.WorkerStatusAsleep] = w.gotoStateAsleep
 	w.stateStarters[api.WorkerStatusAwake] = w.gotoStateAwake
-	w.stateStarters[api.WorkerStatusShutdown] = w.gotoStateShutdown
+	w.stateStarters[api.WorkerStatusOffline] = w.gotoStateOffline
 }
 
 // Called whenever the Flamenco Manager has a change in current status for us.