Remove dependency on facebookgo/clock (#76)

glide.yaml

@@ -5,8 +5,6 @@ import:
   version: ~3.1.0
   subpackages:
   - statsd
-- package: github.com/facebookgo/clock
-  version: 600d898af40aa09a7a93ecb9265d87b0504b6f03
 - package: github.com/prometheus/client_golang
   version: ^0.8.0
   subpackages:

scope.go

@@ -25,8 +25,6 @@ import (
 	"io"
 	"sync"
 	"time"
-
-	"github.com/facebookgo/clock"
 )
 
 var (
@@ -35,7 +33,7 @@ var (
 	// DefaultSeparator is the default separator used to join nested scopes
 	DefaultSeparator = "."
 
-	globalClock = clock.New()
+	globalNow = time.Now
 
 	defaultScopeBuckets = DurationBuckets{
 		0 * time.Millisecond,

stats.go

@@ -181,11 +181,11 @@ func (t *timer) Record(interval time.Duration) {
 }
 
 func (t *timer) Start() Stopwatch {
-	return NewStopwatch(globalClock.Now(), t)
+	return NewStopwatch(globalNow(), t)
 }
 
 func (t *timer) RecordStopwatch(stopwatchStart time.Time) {
-	d := globalClock.Now().Sub(stopwatchStart)
+	d := globalNow().Sub(stopwatchStart)
 	t.Record(d)
 }
 
@@ -367,11 +367,11 @@ func (h *histogram) RecordDuration(value time.Duration) {
 }
 
 func (h *histogram) Start() Stopwatch {
-	return NewStopwatch(globalClock.Now(), h)
+	return NewStopwatch(globalNow(), h)
 }
 
 func (h *histogram) RecordStopwatch(stopwatchStart time.Time) {
-	d := globalClock.Now().Sub(stopwatchStart)
+	d := globalNow().Sub(stopwatchStart)
 	h.RecordDuration(d)
 }