2b85b0d1df
Update k8s client and the dependencies ACI client change for Mocking Add ACI Provider Mock Tests Add the Windows development environment Add UT for Default Resource Requests Enable the make test in Docker file Update the vendors
123 lines
4.2 KiB
Go
123 lines
4.2 KiB
Go
/*
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Copyright 2016 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 dynamic
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import (
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"sync"
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"k8s.io/apimachinery/pkg/api/meta"
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"k8s.io/apimachinery/pkg/runtime/schema"
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restclient "k8s.io/client-go/rest"
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)
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// ClientPool manages a pool of dynamic clients.
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type ClientPool interface {
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// ClientForGroupVersionResource returns a client configured for the specified groupVersionResource.
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// Resource may be empty.
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ClientForGroupVersionResource(resource schema.GroupVersionResource) (Interface, error)
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// ClientForGroupVersionKind returns a client configured for the specified groupVersionKind.
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// Kind may be empty.
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ClientForGroupVersionKind(kind schema.GroupVersionKind) (Interface, error)
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}
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// APIPathResolverFunc knows how to convert a groupVersion to its API path. The Kind field is
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// optional.
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type APIPathResolverFunc func(kind schema.GroupVersionKind) string
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// LegacyAPIPathResolverFunc can resolve paths properly with the legacy API.
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func LegacyAPIPathResolverFunc(kind schema.GroupVersionKind) string {
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if len(kind.Group) == 0 {
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return "/api"
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}
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return "/apis"
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}
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// clientPoolImpl implements ClientPool and caches clients for the resource group versions
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// is asked to retrieve. This type is thread safe.
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type clientPoolImpl struct {
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lock sync.RWMutex
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config *restclient.Config
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clients map[schema.GroupVersion]*Client
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apiPathResolverFunc APIPathResolverFunc
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mapper meta.RESTMapper
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}
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// NewClientPool returns a ClientPool from the specified config. It reuses clients for the same
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// group version. It is expected this type may be wrapped by specific logic that special cases certain
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// resources or groups.
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func NewClientPool(config *restclient.Config, mapper meta.RESTMapper, apiPathResolverFunc APIPathResolverFunc) ClientPool {
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confCopy := *config
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return &clientPoolImpl{
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config: &confCopy,
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clients: map[schema.GroupVersion]*Client{},
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apiPathResolverFunc: apiPathResolverFunc,
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mapper: mapper,
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}
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}
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// Instantiates a new dynamic client pool with the given config.
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func NewDynamicClientPool(cfg *restclient.Config) ClientPool {
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// restMapper is not needed when using LegacyAPIPathResolverFunc
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emptyMapper := meta.MultiRESTMapper{}
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return NewClientPool(cfg, emptyMapper, LegacyAPIPathResolverFunc)
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}
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// ClientForGroupVersionResource uses the provided RESTMapper to identify the appropriate resource. Resource may
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// be empty. If no matching kind is found the underlying client for that group is still returned.
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func (c *clientPoolImpl) ClientForGroupVersionResource(resource schema.GroupVersionResource) (Interface, error) {
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kinds, err := c.mapper.KindsFor(resource)
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if err != nil {
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if meta.IsNoMatchError(err) {
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return c.ClientForGroupVersionKind(schema.GroupVersionKind{Group: resource.Group, Version: resource.Version})
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}
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return nil, err
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}
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return c.ClientForGroupVersionKind(kinds[0])
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}
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// ClientForGroupVersion returns a client for the specified groupVersion, creates one if none exists. Kind
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// in the GroupVersionKind may be empty.
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func (c *clientPoolImpl) ClientForGroupVersionKind(kind schema.GroupVersionKind) (Interface, error) {
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c.lock.Lock()
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defer c.lock.Unlock()
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gv := kind.GroupVersion()
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// do we have a client already configured?
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if existingClient, found := c.clients[gv]; found {
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return existingClient, nil
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}
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// avoid changing the original config
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confCopy := *c.config
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conf := &confCopy
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// we need to set the api path based on group version, if no group, default to legacy path
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conf.APIPath = c.apiPathResolverFunc(kind)
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// we need to make a client
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conf.GroupVersion = &gv
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dynamicClient, err := NewClient(conf)
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if err != nil {
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return nil, err
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}
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c.clients[gv] = dynamicClient
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return dynamicClient, nil
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}
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