151 lines
4.5 KiB
Go
151 lines
4.5 KiB
Go
/*
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Copyright 2015 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 etcd
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import (
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"fmt"
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"net/http"
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"net/url"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/rest"
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"k8s.io/kubernetes/pkg/kubelet/client"
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"k8s.io/kubernetes/pkg/registry/cachesize"
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"k8s.io/kubernetes/pkg/registry/core/node"
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noderest "k8s.io/kubernetes/pkg/registry/core/node/rest"
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"k8s.io/kubernetes/pkg/registry/generic"
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"k8s.io/kubernetes/pkg/registry/generic/registry"
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"k8s.io/kubernetes/pkg/runtime"
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)
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// NodeStorage includes storage for nodes and all sub resources
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type NodeStorage struct {
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Node *REST
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Status *StatusREST
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Proxy *noderest.ProxyREST
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KubeletConnectionInfo client.ConnectionInfoGetter
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}
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type REST struct {
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*registry.Store
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connection client.ConnectionInfoGetter
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proxyTransport http.RoundTripper
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}
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// StatusREST implements the REST endpoint for changing the status of a pod.
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type StatusREST struct {
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store *registry.Store
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}
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func (r *StatusREST) New() runtime.Object {
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return &api.Node{}
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}
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// Get retrieves the object from the storage. It is required to support Patch.
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func (r *StatusREST) Get(ctx api.Context, name string) (runtime.Object, error) {
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return r.store.Get(ctx, name)
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}
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// Update alters the status subset of an object.
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func (r *StatusREST) Update(ctx api.Context, name string, objInfo rest.UpdatedObjectInfo) (runtime.Object, bool, error) {
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return r.store.Update(ctx, name, objInfo)
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}
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// NewStorage returns a NodeStorage object that will work against nodes.
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func NewStorage(opts generic.RESTOptions, kubeletClientConfig client.KubeletClientConfig, proxyTransport http.RoundTripper) (*NodeStorage, error) {
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prefix := "/" + opts.ResourcePrefix
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newListFunc := func() runtime.Object { return &api.NodeList{} }
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storageInterface, dFunc := opts.Decorator(
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opts.StorageConfig,
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cachesize.GetWatchCacheSizeByResource(cachesize.Nodes),
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&api.Node{},
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prefix,
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node.Strategy,
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newListFunc,
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node.NodeNameTriggerFunc)
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store := ®istry.Store{
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NewFunc: func() runtime.Object { return &api.Node{} },
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NewListFunc: newListFunc,
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KeyRootFunc: func(ctx api.Context) string {
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return prefix
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},
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KeyFunc: func(ctx api.Context, name string) (string, error) {
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return registry.NoNamespaceKeyFunc(ctx, prefix, name)
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},
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ObjectNameFunc: func(obj runtime.Object) (string, error) {
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return obj.(*api.Node).Name, nil
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},
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PredicateFunc: node.MatchNode,
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QualifiedResource: api.Resource("nodes"),
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EnableGarbageCollection: opts.EnableGarbageCollection,
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DeleteCollectionWorkers: opts.DeleteCollectionWorkers,
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CreateStrategy: node.Strategy,
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UpdateStrategy: node.Strategy,
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DeleteStrategy: node.Strategy,
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ExportStrategy: node.Strategy,
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Storage: storageInterface,
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DestroyFunc: dFunc,
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}
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statusStore := *store
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statusStore.UpdateStrategy = node.StatusStrategy
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// Set up REST handlers
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nodeREST := &REST{Store: store, proxyTransport: proxyTransport}
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statusREST := &StatusREST{store: &statusStore}
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proxyREST := &noderest.ProxyREST{Store: store, ProxyTransport: proxyTransport}
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// Build a NodeGetter that looks up nodes using the REST handler
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nodeGetter := client.NodeGetterFunc(func(nodeName string) (*api.Node, error) {
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obj, err := nodeREST.Get(api.NewContext(), nodeName)
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if err != nil {
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return nil, err
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}
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node, ok := obj.(*api.Node)
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if !ok {
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return nil, fmt.Errorf("unexpected type %T", obj)
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}
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return node, nil
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})
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connectionInfoGetter, err := client.NewNodeConnectionInfoGetter(nodeGetter, kubeletClientConfig)
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if err != nil {
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return nil, err
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}
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nodeREST.connection = connectionInfoGetter
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proxyREST.Connection = connectionInfoGetter
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return &NodeStorage{
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Node: nodeREST,
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Status: statusREST,
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Proxy: proxyREST,
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KubeletConnectionInfo: connectionInfoGetter,
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}, nil
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}
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// Implement Redirector.
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var _ = rest.Redirector(&REST{})
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// ResourceLocation returns a URL to which one can send traffic for the specified node.
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func (r *REST) ResourceLocation(ctx api.Context, id string) (*url.URL, http.RoundTripper, error) {
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return node.ResourceLocation(r, r.connection, r.proxyTransport, ctx, id)
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}
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