Add glide.yaml and vendor deps

vendor/k8s.io/kubernetes/pkg/metrics/kubelet_metrics.go

@@ -0,0 +1,85 @@
+/*
+Copyright 2015 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package metrics
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"time"
+)
+
+type KubeletMetrics Metrics
+
+func (m *KubeletMetrics) Equal(o KubeletMetrics) bool {
+	return (*Metrics)(m).Equal(Metrics(o))
+}
+
+func NewKubeletMetrics() KubeletMetrics {
+	result := NewMetrics()
+	return KubeletMetrics(result)
+}
+
+// GrabKubeletMetricsWithoutProxy retrieve metrics from the kubelet on the given node using a simple GET over http.
+// Currently only used in integration tests.
+func GrabKubeletMetricsWithoutProxy(nodeName string) (KubeletMetrics, error) {
+	metricsEndpoint := "http://%s/metrics"
+	resp, err := http.Get(fmt.Sprintf(metricsEndpoint, nodeName))
+	if err != nil {
+		return KubeletMetrics{}, err
+	}
+	defer resp.Body.Close()
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return KubeletMetrics{}, err
+	}
+	return parseKubeletMetrics(string(body))
+}
+
+func parseKubeletMetrics(data string) (KubeletMetrics, error) {
+	result := NewKubeletMetrics()
+	if err := parseMetrics(data, (*Metrics)(&result)); err != nil {
+		return KubeletMetrics{}, err
+	}
+	return result, nil
+}
+
+func (g *MetricsGrabber) getMetricsFromNode(nodeName string, kubeletPort int) (string, error) {
+	// There's a problem with timing out during proxy. Wrapping this in a goroutine to prevent deadlock.
+	// Hanging goroutine will be leaked.
+	finished := make(chan struct{})
+	var err error
+	var rawOutput []byte
+	go func() {
+		rawOutput, err = g.client.Core().RESTClient().Get().
+			Prefix("proxy").
+			Resource("nodes").
+			Name(fmt.Sprintf("%v:%v", nodeName, kubeletPort)).
+			Suffix("metrics").
+			Do().Raw()
+		finished <- struct{}{}
+	}()
+	select {
+	case <-time.After(ProxyTimeout):
+		return "", fmt.Errorf("Timed out when waiting for proxy to gather metrics from %v", nodeName)
+	case <-finished:
+		if err != nil {
+			return "", err
+		}
+		return string(rawOutput), nil
+	}
+}