mirror of
https://github.com/kubernetes-sigs/prometheus-adapter.git
synced 2026-04-07 02:07:58 +00:00
106 lines
3.1 KiB
Go
106 lines
3.1 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/apimachinery/announced"
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"k8s.io/apimachinery/pkg/apimachinery/registered"
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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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"k8s.io/apimachinery/pkg/runtime/serializer"
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"k8s.io/apimachinery/pkg/version"
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genericapiserver "k8s.io/apiserver/pkg/server"
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"github.com/directxman12/custom-metrics-boilerplate/pkg/provider"
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"k8s.io/metrics/pkg/apis/custom_metrics/install"
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)
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var (
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groupFactoryRegistry = make(announced.APIGroupFactoryRegistry)
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registry = registered.NewOrDie("")
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Scheme = runtime.NewScheme()
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Codecs = serializer.NewCodecFactory(Scheme)
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)
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func init() {
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install.Install(groupFactoryRegistry, registry, Scheme)
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// we need to add the options to empty v1
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// TODO fix the server code to avoid this
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metav1.AddToGroupVersion(Scheme, schema.GroupVersion{Version: "v1"})
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// TODO: keep the generic API server from wanting this
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unversioned := schema.GroupVersion{Group: "", Version: "v1"}
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Scheme.AddUnversionedTypes(unversioned,
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&metav1.Status{},
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&metav1.APIVersions{},
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&metav1.APIGroupList{},
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&metav1.APIGroup{},
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&metav1.APIResourceList{},
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)
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}
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type Config struct {
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GenericConfig *genericapiserver.Config
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}
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// CustomMetricsAdapterServer contains state for a Kubernetes cluster master/api server.
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type CustomMetricsAdapterServer struct {
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GenericAPIServer *genericapiserver.GenericAPIServer
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Provider provider.CustomMetricsProvider
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}
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type completedConfig struct {
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*Config
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}
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// Complete fills in any fields not set that are required to have valid data. It's mutating the receiver.
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func (c *Config) Complete() completedConfig {
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c.GenericConfig.Complete()
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c.GenericConfig.Version = &version.Info{
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Major: "1",
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Minor: "0",
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}
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return completedConfig{c}
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}
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// SkipComplete provides a way to construct a server instance without config completion.
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func (c *Config) SkipComplete() completedConfig {
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return completedConfig{c}
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}
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// New returns a new instance of CustomMetricsAdapterServer from the given config.
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func (c completedConfig) New(cmProvider provider.CustomMetricsProvider) (*CustomMetricsAdapterServer, error) {
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genericServer, err := c.Config.GenericConfig.SkipComplete().New(genericapiserver.EmptyDelegate) // completion is done in Complete, no need for a second time
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if err != nil {
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return nil, err
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}
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s := &CustomMetricsAdapterServer{
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GenericAPIServer: genericServer,
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Provider: cmProvider,
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}
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if err := s.InstallCustomMetricsAPI(); err != nil {
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return nil, err
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}
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return s, nil
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}
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