Add vendor folder to git

vendor/github.com/directxman12/custom-metrics-boilerplate/pkg/sample-cmd/provider/provider.go

@@ -0,0 +1,180 @@
+/*
+Copyright 2017 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 provider
+
+import (
+	"time"
+	"fmt"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	coreclient "k8s.io/client-go/kubernetes/typed/core/v1"
+	"k8s.io/apimachinery/pkg/labels"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	apimeta "k8s.io/apimachinery/pkg/api/meta"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/metrics/pkg/apis/custom_metrics"
+	"k8s.io/client-go/pkg/api"
+	_ "k8s.io/client-go/pkg/api/install"
+	"k8s.io/apimachinery/pkg/api/resource"
+	"k8s.io/client-go/kubernetes/scheme"
+
+	"github.com/directxman12/custom-metrics-boilerplate/pkg/provider"
+)
+
+type incrementalTestingProvider struct {
+	client coreclient.CoreV1Interface
+
+	values map[provider.MetricInfo]int64
+}
+
+func NewFakeProvider(client coreclient.CoreV1Interface) provider.CustomMetricsProvider {
+	return &incrementalTestingProvider{
+		client: client,
+		values: make(map[provider.MetricInfo]int64),
+	}
+}
+
+func (p *incrementalTestingProvider) valueFor(groupResource schema.GroupResource, metricName string, namespaced bool) int64 {
+	info := provider.MetricInfo{
+		GroupResource: groupResource,
+		Metric: metricName,
+		Namespaced: namespaced,
+	}
+
+	value := p.values[info]
+	value += 1
+	p.values[info] = value
+
+	return value
+}
+
+func (p *incrementalTestingProvider) metricFor(value int64, groupResource schema.GroupResource, namespace string, name string, metricName string) (*custom_metrics.MetricValue, error) {
+	group, err := api.Registry.Group(groupResource.Group)
+	if err != nil {
+		return nil, err
+	}
+	kind, err := api.Registry.RESTMapper().KindFor(groupResource.WithVersion(group.GroupVersion.Version))
+	if err != nil {
+		return nil, err
+	}
+
+	return &custom_metrics.MetricValue{
+		DescribedObject: api.ObjectReference{
+			APIVersion: groupResource.Group+"/"+runtime.APIVersionInternal,
+			Kind: kind.Kind,
+			Name: name,
+			Namespace: namespace,
+		},
+		MetricName: metricName,
+		Timestamp: metav1.Time{time.Now()},
+		Value: *resource.NewMilliQuantity(value * 100, resource.DecimalSI),
+	}, nil
+}
+
+func (p *incrementalTestingProvider) metricsFor(totalValue int64, groupResource schema.GroupResource, metricName string, list runtime.Object) (*custom_metrics.MetricValueList, error) {
+	if !apimeta.IsListType(list) {
+		return nil, fmt.Errorf("returned object was not a list")
+	}
+
+	res := make([]custom_metrics.MetricValue, 0)
+
+	err := apimeta.EachListItem(list, func(item runtime.Object) error {
+		objMeta := item.(metav1.ObjectMetaAccessor).GetObjectMeta()
+		value, err := p.metricFor(0, groupResource, objMeta.GetNamespace(), objMeta.GetName(), metricName)
+		if err != nil {
+			return err
+		}
+		res = append(res, *value)
+
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	for i := range res {
+		res[i].Value = *resource.NewMilliQuantity(100 * totalValue / int64(len(res)), resource.DecimalSI)
+	}
+
+	//return p.metricFor(value, groupResource, "", name, metricName)
+	return &custom_metrics.MetricValueList{
+		Items: res,
+	}, nil
+}
+
+func (p *incrementalTestingProvider) GetRootScopedMetricByName(groupResource schema.GroupResource, name string, metricName string) (*custom_metrics.MetricValue, error) {
+	value := p.valueFor(groupResource, metricName, false)
+	return p.metricFor(value, groupResource, "", name, metricName)
+}
+
+
+func (p *incrementalTestingProvider) GetRootScopedMetricBySelector(groupResource schema.GroupResource, selector labels.Selector, metricName string) (*custom_metrics.MetricValueList, error) {
+	totalValue := p.valueFor(groupResource, metricName, false)
+
+	// TODO: work for objects not in core v1
+	matchingObjectsRaw, err := p.client.RESTClient().Get().
+		Resource(groupResource.Resource).
+		VersionedParams(&metav1.ListOptions{LabelSelector: selector.String()}, scheme.ParameterCodec).
+		Do().
+		Get()
+	if err != nil {
+		return nil, err
+	}
+	return p.metricsFor(totalValue, groupResource, metricName, matchingObjectsRaw)
+}
+
+func (p *incrementalTestingProvider) GetNamespacedMetricByName(groupResource schema.GroupResource, namespace string, name string, metricName string) (*custom_metrics.MetricValue, error) {
+	value := p.valueFor(groupResource, metricName, true)
+	return p.metricFor(value, groupResource, namespace, name, metricName)
+}
+
+func (p *incrementalTestingProvider) GetNamespacedMetricBySelector(groupResource schema.GroupResource, namespace string, selector labels.Selector, metricName string) (*custom_metrics.MetricValueList, error) {
+	totalValue := p.valueFor(groupResource, metricName, true)
+
+	// TODO: work for objects not in core v1
+	matchingObjectsRaw, err := p.client.RESTClient().Get().
+		Namespace(namespace).
+		Resource(groupResource.Resource).
+		VersionedParams(&metav1.ListOptions{LabelSelector: selector.String()}, scheme.ParameterCodec).
+		Do().
+		Get()
+	if err != nil {
+		return nil, err
+	}
+	return p.metricsFor(totalValue, groupResource, metricName, matchingObjectsRaw)
+}
+
+func (p *incrementalTestingProvider) ListAllMetrics() []provider.MetricInfo {
+	// TODO: maybe dynamically generate this?
+	return []provider.MetricInfo{
+		{
+			GroupResource: schema.GroupResource{Group: "", Resource: "pods"},
+			Metric: "packets-per-second",
+			Namespaced: true,
+		},
+		{
+			GroupResource: schema.GroupResource{Group: "", Resource: "services"},
+			Metric: "connections-per-second",
+			Namespaced: true,
+		},
+		{
+			GroupResource: schema.GroupResource{Group: "", Resource: "namespaces"},
+			Metric: "queue-length",
+			Namespaced: false,
+		},
+	}
+}

vendor/github.com/directxman12/custom-metrics-boilerplate/pkg/sample-cmd/server/start.go

@@ -0,0 +1,108 @@
+/*
+Copyright 2017 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 server
+
+import (
+	"io"
+	"fmt"
+
+	"github.com/spf13/cobra"
+	"k8s.io/client-go/rest"
+	"k8s.io/client-go/tools/clientcmd"
+	coreclient "k8s.io/client-go/kubernetes/typed/core/v1"
+
+	"github.com/directxman12/custom-metrics-boilerplate/pkg/cmd/server"
+	"github.com/directxman12/custom-metrics-boilerplate/pkg/sample-cmd/provider"
+)
+
+// NewCommandStartMaster provides a CLI handler for 'start master' command
+func NewCommandStartSampleAdapterServer(out, errOut io.Writer, stopCh <-chan struct{}) *cobra.Command {
+	baseOpts := server.NewCustomMetricsAdapterServerOptions(out, errOut)
+	o := SampleAdapterServerOptions{
+		CustomMetricsAdapterServerOptions: baseOpts,
+	}
+
+	cmd := &cobra.Command{
+		Short: "Launch the custom metrics API adapter server",
+		Long:  "Launch the custom metrics API adapter server",
+		RunE: func(c *cobra.Command, args []string) error {
+			if err := o.Complete(); err != nil {
+				return err
+			}
+			if err := o.Validate(args); err != nil {
+				return err
+			}
+			if err := o.RunCustomMetricsAdapterServer(stopCh); err != nil {
+				return err
+			}
+			return nil
+		},
+	}
+
+	flags := cmd.Flags()
+	o.SecureServing.AddFlags(flags)
+	o.Authentication.AddFlags(flags)
+	o.Authorization.AddFlags(flags)
+	o.Features.AddFlags(flags)
+
+	flags.StringVar(&o.RemoteKubeConfigFile, "lister-kubeconfig", o.RemoteKubeConfigFile, ""+
+		"kubeconfig file pointing at the 'core' kubernetes server with enough rights to list "+
+		"any described objets")
+
+
+	return cmd
+}
+
+func (o SampleAdapterServerOptions) RunCustomMetricsAdapterServer(stopCh <-chan struct{}) error {
+	config, err := o.Config()
+	if err != nil {
+		return err
+	}
+
+	var clientConfig *rest.Config
+	if len(o.RemoteKubeConfigFile) > 0 {
+		loadingRules := &clientcmd.ClientConfigLoadingRules{ExplicitPath: o.RemoteKubeConfigFile}
+		loader := clientcmd.NewNonInteractiveDeferredLoadingClientConfig(loadingRules, &clientcmd.ConfigOverrides{})
+
+		clientConfig, err = loader.ClientConfig()
+	} else {
+		clientConfig, err = rest.InClusterConfig()
+	}
+	if err != nil {
+		return fmt.Errorf("unable to construct lister client config to initialize provider: %v", err)
+	}
+
+	client, err := coreclient.NewForConfig(clientConfig)
+	if err != nil {
+		return fmt.Errorf("unable to construct lister client to initialize provider: %v", err)
+	}
+
+	cmProvider := provider.NewFakeProvider(client)
+
+	server, err := config.Complete().New(cmProvider)
+	if err != nil {
+		return err
+	}
+	return server.GenericAPIServer.PrepareRun().Run(stopCh)
+}
+
+type SampleAdapterServerOptions struct {
+	*server.CustomMetricsAdapterServerOptions
+
+	// RemoteKubeConfigFile is the config used to list pods from the master API server
+	RemoteKubeConfigFile string
+}