mirror of
https://github.com/kubernetes-sigs/prometheus-adapter.git
synced 2026-04-06 09:47:54 +00:00
89 lines
3.3 KiB
Go
89 lines
3.3 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package apiserver
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import (
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"k8s.io/apimachinery/pkg/api/meta"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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genericapi "k8s.io/apiserver/pkg/endpoints"
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"k8s.io/apiserver/pkg/endpoints/discovery"
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genericapiserver "k8s.io/apiserver/pkg/server"
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specificapi "github.com/kubernetes-incubator/custom-metrics-apiserver/pkg/apiserver/installer"
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"github.com/kubernetes-incubator/custom-metrics-apiserver/pkg/provider"
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metricstorage "github.com/kubernetes-incubator/custom-metrics-apiserver/pkg/registry/custom_metrics"
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"k8s.io/metrics/pkg/apis/custom_metrics"
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)
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func (s *CustomMetricsAdapterServer) InstallCustomMetricsAPI() error {
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groupInfo := genericapiserver.NewDefaultAPIGroupInfo(custom_metrics.GroupName, Scheme, runtime.NewParameterCodec(Scheme), Codecs)
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container := s.GenericAPIServer.Handler.GoRestfulContainer
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// Register custom metrics REST handler for all supported API versions.
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for versionIndex, mainGroupVer := range groupInfo.PrioritizedVersions {
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preferredVersionForDiscovery := metav1.GroupVersionForDiscovery{
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GroupVersion: mainGroupVer.String(),
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Version: mainGroupVer.Version,
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}
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groupVersion := metav1.GroupVersionForDiscovery{
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GroupVersion: mainGroupVer.String(),
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Version: mainGroupVer.Version,
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}
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apiGroup := metav1.APIGroup{
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Name: mainGroupVer.Group,
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Versions: []metav1.GroupVersionForDiscovery{groupVersion},
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PreferredVersion: preferredVersionForDiscovery,
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}
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cmAPI := s.cmAPI(&groupInfo, mainGroupVer)
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if err := cmAPI.InstallREST(container); err != nil {
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return err
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}
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if versionIndex == 0 {
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s.GenericAPIServer.DiscoveryGroupManager.AddGroup(apiGroup)
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container.Add(discovery.NewAPIGroupHandler(s.GenericAPIServer.Serializer, apiGroup).WebService())
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}
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}
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return nil
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}
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func (s *CustomMetricsAdapterServer) cmAPI(groupInfo *genericapiserver.APIGroupInfo, groupVersion schema.GroupVersion) *specificapi.MetricsAPIGroupVersion {
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resourceStorage := metricstorage.NewREST(s.customMetricsProvider)
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return &specificapi.MetricsAPIGroupVersion{
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DynamicStorage: resourceStorage,
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APIGroupVersion: &genericapi.APIGroupVersion{
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Root: genericapiserver.APIGroupPrefix,
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GroupVersion: groupVersion,
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MetaGroupVersion: groupInfo.MetaGroupVersion,
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ParameterCodec: groupInfo.ParameterCodec,
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Serializer: groupInfo.NegotiatedSerializer,
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Creater: groupInfo.Scheme,
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Convertor: groupInfo.Scheme,
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UnsafeConvertor: runtime.UnsafeObjectConvertor(groupInfo.Scheme),
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Typer: groupInfo.Scheme,
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Linker: runtime.SelfLinker(meta.NewAccessor()),
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},
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ResourceLister: provider.NewCustomMetricResourceLister(s.customMetricsProvider),
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Handlers: &specificapi.CMHandlers{},
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}
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}
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