Run initial command in a go routine

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

commands/watch.go

@@ -92,17 +92,20 @@ func watchLoop(cmd *cobra.Command, args []string, onChange func(cmd *cobra.Comma
 
  bounce := debounce.New(1500 * time.Millisecond)
 
- // An initial build is usually done on first load with
- // live reloaders
- ctx, cancel := context.WithCancel(context.Background())
- defer cancel()
- canceller.Set(ctx, cancel)
-
- if err := onChange(cmd, args, ctx); err != nil {
- fmt.Println("Error rebuilding: ", err)
- os.Exit(1)
- }
+ go func() {
+ // An initial build is usually done on first load with
+ // live reloaders
+ ctx, cancel := context.WithCancel(context.Background())
+ defer cancel()
+ canceller.Set(ctx, cancel)
+
+ if err := onChange(cmd, args, ctx); err != nil {
+ fmt.Println("Error rebuilding: ", err)
+ os.Exit(1)
+ }
+ }()
 
+ log.Printf("[Watch] Started")
  for {
  select {
  case event, ok := <-watcher.Events:
@@ -161,11 +164,12 @@ func watchLoop(cmd *cobra.Command, args []string, onChange func(cmd *cobra.Comma
  }
 
  bounce(func() {
- log.Printf("[Watch] Cancel previous build")
+ log.Printf("[Watch] Cancelling")
 
  canceller.Cancel()
- log.Printf("[Watch] Cancelled previous build")
- ctx, cancel = context.WithCancel(context.Background())
+
+ log.Printf("[Watch] Cancelled")
+ ctx, cancel := context.WithCancel(context.Background())
  canceller.Set(ctx, cancel)
 
  // Assign --filter to "" for all functions if we can't determine the