mirror of https://github.com/k3s-io/k3s
128 lines
3.9 KiB
Go
128 lines
3.9 KiB
Go
/*
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Copyright 2018 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 genericclioptions
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import (
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"fmt"
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"k8s.io/apimachinery/pkg/api/meta"
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"k8s.io/client-go/discovery"
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"k8s.io/client-go/rest"
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"k8s.io/client-go/restmapper"
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"k8s.io/client-go/tools/clientcmd"
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clientcmdapi "k8s.io/client-go/tools/clientcmd/api"
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)
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// TestConfigFlags contains clientConfig struct
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// and interfaces that implements RESTClientGetter
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type TestConfigFlags struct {
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clientConfig clientcmd.ClientConfig
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discoveryClient discovery.CachedDiscoveryInterface
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restMapper meta.RESTMapper
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}
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// ToRawKubeConfigLoader implements RESTClientGetter
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// Returns a clientconfig if it's set
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func (f *TestConfigFlags) ToRawKubeConfigLoader() clientcmd.ClientConfig {
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if f.clientConfig == nil {
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panic("attempt to obtain a test RawKubeConfigLoader with no clientConfig specified")
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}
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return f.clientConfig
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}
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// ToRESTConfig implements RESTClientGetter.
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// Returns a REST client configuration based on a provided path
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// to a .kubeconfig file, loading rules, and config flag overrides.
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// Expects the AddFlags method to have been called.
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func (f *TestConfigFlags) ToRESTConfig() (*rest.Config, error) {
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return f.ToRawKubeConfigLoader().ClientConfig()
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}
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// ToDiscoveryClient implements RESTClientGetter.
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// Returns a CachedDiscoveryInterface
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func (f *TestConfigFlags) ToDiscoveryClient() (discovery.CachedDiscoveryInterface, error) {
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return f.discoveryClient, nil
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}
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// ToRESTMapper implements RESTClientGetter.
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// Returns a mapper.
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func (f *TestConfigFlags) ToRESTMapper() (meta.RESTMapper, error) {
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if f.restMapper != nil {
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return f.restMapper, nil
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}
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if f.discoveryClient != nil {
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mapper := restmapper.NewDeferredDiscoveryRESTMapper(f.discoveryClient)
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expander := restmapper.NewShortcutExpander(mapper, f.discoveryClient)
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return expander, nil
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}
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return nil, fmt.Errorf("no restmapper")
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}
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// WithClientConfig sets the clientConfig flag
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func (f *TestConfigFlags) WithClientConfig(clientConfig clientcmd.ClientConfig) *TestConfigFlags {
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f.clientConfig = clientConfig
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return f
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}
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// WithRESTMapper sets the restMapper flag
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func (f *TestConfigFlags) WithRESTMapper(mapper meta.RESTMapper) *TestConfigFlags {
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f.restMapper = mapper
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return f
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}
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// WithDiscoveryClient sets the discoveryClient flag
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func (f *TestConfigFlags) WithDiscoveryClient(c discovery.CachedDiscoveryInterface) *TestConfigFlags {
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f.discoveryClient = c
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return f
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}
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// WithNamespace sets the clientConfig flag by modifying delagate and namespace
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func (f *TestConfigFlags) WithNamespace(ns string) *TestConfigFlags {
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if f.clientConfig == nil {
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panic("attempt to obtain a test RawKubeConfigLoader with no clientConfig specified")
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}
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f.clientConfig = &namespacedClientConfig{
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delegate: f.clientConfig,
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namespace: ns,
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}
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return f
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}
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// NewTestConfigFlags builds a TestConfigFlags struct to test ConfigFlags
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func NewTestConfigFlags() *TestConfigFlags {
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return &TestConfigFlags{}
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}
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type namespacedClientConfig struct {
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delegate clientcmd.ClientConfig
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namespace string
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}
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func (c *namespacedClientConfig) Namespace() (string, bool, error) {
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return c.namespace, len(c.namespace) > 0, nil
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}
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func (c *namespacedClientConfig) RawConfig() (clientcmdapi.Config, error) {
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return c.delegate.RawConfig()
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}
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func (c *namespacedClientConfig) ClientConfig() (*rest.Config, error) {
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return c.delegate.ClientConfig()
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}
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func (c *namespacedClientConfig) ConfigAccess() clientcmd.ConfigAccess {
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return c.delegate.ConfigAccess()
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}
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