From de6d2c524430287c699aaa898c1325da6afea539 Mon Sep 17 00:00:00 2001
From: Niall Sheridan <nsheridan@gmail.com>
Date: Wed, 20 Jun 2018 22:39:07 +0100
Subject: Update dependencies

---
 .../aws/aws-sdk-go/aws/csm/metricChan.go           | 54 ++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 vendor/github.com/aws/aws-sdk-go/aws/csm/metricChan.go

(limited to 'vendor/github.com/aws/aws-sdk-go/aws/csm/metricChan.go')

diff --git a/vendor/github.com/aws/aws-sdk-go/aws/csm/metricChan.go b/vendor/github.com/aws/aws-sdk-go/aws/csm/metricChan.go
new file mode 100644
index 0000000..514fc37
--- /dev/null
+++ b/vendor/github.com/aws/aws-sdk-go/aws/csm/metricChan.go
@@ -0,0 +1,54 @@
+package csm
+
+import (
+	"sync/atomic"
+)
+
+const (
+	runningEnum = iota
+	pausedEnum
+)
+
+var (
+	// MetricsChannelSize of metrics to hold in the channel
+	MetricsChannelSize = 100
+)
+
+type metricChan struct {
+	ch     chan metric
+	paused int64
+}
+
+func newMetricChan(size int) metricChan {
+	return metricChan{
+		ch: make(chan metric, size),
+	}
+}
+
+func (ch *metricChan) Pause() {
+	atomic.StoreInt64(&ch.paused, pausedEnum)
+}
+
+func (ch *metricChan) Continue() {
+	atomic.StoreInt64(&ch.paused, runningEnum)
+}
+
+func (ch *metricChan) IsPaused() bool {
+	v := atomic.LoadInt64(&ch.paused)
+	return v == pausedEnum
+}
+
+// Push will push metrics to the metric channel if the channel
+// is not paused
+func (ch *metricChan) Push(m metric) bool {
+	if ch.IsPaused() {
+		return false
+	}
+
+	select {
+	case ch.ch <- m:
+		return true
+	default:
+		return false
+	}
+}
-- 
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