kubernetes storage_apps 源码

kubernetes storage_apps 代码

文件路径：/pkg/registry/apps/rest/storage_apps.go

/*
Copyright 2016 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 rest

import (
	appsapiv1 "k8s.io/api/apps/v1"
	"k8s.io/apiserver/pkg/registry/generic"
	"k8s.io/apiserver/pkg/registry/rest"
	genericapiserver "k8s.io/apiserver/pkg/server"
	serverstorage "k8s.io/apiserver/pkg/server/storage"
	"k8s.io/kubernetes/pkg/api/legacyscheme"
	"k8s.io/kubernetes/pkg/apis/apps"
	controllerrevisionsstore "k8s.io/kubernetes/pkg/registry/apps/controllerrevision/storage"
	daemonsetstore "k8s.io/kubernetes/pkg/registry/apps/daemonset/storage"
	deploymentstore "k8s.io/kubernetes/pkg/registry/apps/deployment/storage"
	replicasetstore "k8s.io/kubernetes/pkg/registry/apps/replicaset/storage"
	statefulsetstore "k8s.io/kubernetes/pkg/registry/apps/statefulset/storage"
)

// StorageProvider is a struct for apps REST storage.
type StorageProvider struct{}

// NewRESTStorage returns APIGroupInfo object.
func (p StorageProvider) NewRESTStorage(apiResourceConfigSource serverstorage.APIResourceConfigSource, restOptionsGetter generic.RESTOptionsGetter) (genericapiserver.APIGroupInfo, error) {
	apiGroupInfo := genericapiserver.NewDefaultAPIGroupInfo(apps.GroupName, legacyscheme.Scheme, legacyscheme.ParameterCodec, legacyscheme.Codecs)
	// If you add a version here, be sure to add an entry in `k8s.io/kubernetes/cmd/kube-apiserver/app/aggregator.go with specific priorities.
	// TODO refactor the plumbing to provide the information in the APIGroupInfo

	if storageMap, err := p.v1Storage(apiResourceConfigSource, restOptionsGetter); err != nil {
		return genericapiserver.APIGroupInfo{}, err
	} else if len(storageMap) > 0 {
		apiGroupInfo.VersionedResourcesStorageMap[appsapiv1.SchemeGroupVersion.Version] = storageMap
	}

	return apiGroupInfo, nil
}

func (p StorageProvider) v1Storage(apiResourceConfigSource serverstorage.APIResourceConfigSource, restOptionsGetter generic.RESTOptionsGetter) (map[string]rest.Storage, error) {
	storage := map[string]rest.Storage{}

	// deployments
	if resource := "deployments"; apiResourceConfigSource.ResourceEnabled(appsapiv1.SchemeGroupVersion.WithResource(resource)) {
		deploymentStorage, err := deploymentstore.NewStorage(restOptionsGetter)
		if err != nil {
			return storage, err
		}
		storage[resource] = deploymentStorage.Deployment
		storage[resource+"/status"] = deploymentStorage.Status
		storage[resource+"/scale"] = deploymentStorage.Scale
	}

	// statefulsets
	if resource := "statefulsets"; apiResourceConfigSource.ResourceEnabled(appsapiv1.SchemeGroupVersion.WithResource(resource)) {
		statefulSetStorage, err := statefulsetstore.NewStorage(restOptionsGetter)
		if err != nil {
			return storage, err
		}
		storage[resource] = statefulSetStorage.StatefulSet
		storage[resource+"/status"] = statefulSetStorage.Status
		storage[resource+"/scale"] = statefulSetStorage.Scale
	}

	// daemonsets
	if resource := "daemonsets"; apiResourceConfigSource.ResourceEnabled(appsapiv1.SchemeGroupVersion.WithResource(resource)) {
		daemonSetStorage, daemonSetStatusStorage, err := daemonsetstore.NewREST(restOptionsGetter)
		if err != nil {
			return storage, err
		}
		storage[resource] = daemonSetStorage
		storage[resource+"/status"] = daemonSetStatusStorage
	}

	// replicasets
	if resource := "replicasets"; apiResourceConfigSource.ResourceEnabled(appsapiv1.SchemeGroupVersion.WithResource(resource)) {
		replicaSetStorage, err := replicasetstore.NewStorage(restOptionsGetter)
		if err != nil {
			return storage, err
		}
		storage[resource] = replicaSetStorage.ReplicaSet
		storage[resource+"/status"] = replicaSetStorage.Status
		storage[resource+"/scale"] = replicaSetStorage.Scale
	}

	// controllerrevisions
	if resource := "controllerrevisions"; apiResourceConfigSource.ResourceEnabled(appsapiv1.SchemeGroupVersion.WithResource(resource)) {
		historyStorage, err := controllerrevisionsstore.NewREST(restOptionsGetter)
		if err != nil {
			return storage, err
		}
		storage[resource] = historyStorage
	}

	return storage, nil
}

// GroupName returns name of the group
func (p StorageProvider) GroupName() string {
	return apps.GroupName
}

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