mv pkg/stopper pkg/stop

This makes most of the callsites stutter slightly less.

middleware/jwt/jwt.go

@@ -23,7 +23,7 @@ import (
 
 	"github.com/chihaya/chihaya/bittorrent"
 	"github.com/chihaya/chihaya/middleware"
-	"github.com/chihaya/chihaya/pkg/stopper"
+	"github.com/chihaya/chihaya/pkg/stop"
 )
 
 var (
@@ -114,7 +114,7 @@ func (h *hook) Stop() <-chan error {
 	log.Debug("attempting to shutdown JWT middleware")
 	select {
 	case <-h.closing:
-		return stopper.AlreadyStopped
+		return stop.AlreadyStopped
 	default:
 	}
 	c := make(chan error)

middleware/middleware.go

@@ -9,7 +9,7 @@ import (
 	log "github.com/Sirupsen/logrus"
 	"github.com/chihaya/chihaya/bittorrent"
 	"github.com/chihaya/chihaya/frontend"
-	"github.com/chihaya/chihaya/pkg/stopper"
+	"github.com/chihaya/chihaya/pkg/stop"
 	"github.com/chihaya/chihaya/storage"
 )
 
@@ -104,18 +104,18 @@ func (l *Logic) AfterScrape(ctx context.Context, req *bittorrent.ScrapeRequest,
 
 // Stop stops the Logic.
 //
-// This stops any hooks that implement stopper.Stopper.
+// This stops any hooks that implement stop.stop.
 func (l *Logic) Stop() []error {
-	stopGroup := stopper.NewStopGroup()
+	stopGroup := stop.NewGroup()
 	for _, hook := range l.preHooks {
-		stoppable, ok := hook.(stopper.Stopper)
+		stoppable, ok := hook.(stop.Stopper)
 		if ok {
 			stopGroup.Add(stoppable)
 		}
 	}
 
 	for _, hook := range l.postHooks {
-		stoppable, ok := hook.(stopper.Stopper)
+		stoppable, ok := hook.(stop.Stopper)
 		if ok {
 			stopGroup.Add(stoppable)
 		}