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131 lines
4.2 KiB
131 lines
4.2 KiB
/*
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Copyright The Helm 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 cli describes the operating environment for the Helm CLI.
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Helm's environment encapsulates all of the service dependencies Helm has.
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These dependencies are expressed as interfaces so that alternate implementations
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(mocks, etc.) can be easily generated.
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*/
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package cli
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import (
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"fmt"
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"os"
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"strconv"
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"sync"
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"github.com/spf13/pflag"
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"k8s.io/cli-runtime/pkg/genericclioptions"
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"helm.sh/helm/v3/pkg/helmpath"
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"helm.sh/helm/v3/pkg/kube"
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)
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// EnvSettings describes all of the environment settings.
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type EnvSettings struct {
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namespace string
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config genericclioptions.RESTClientGetter
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configOnce sync.Once
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// KubeConfig is the path to the kubeconfig file
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KubeConfig string
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// KubeContext is the name of the kubeconfig context.
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KubeContext string
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// Debug indicates whether or not Helm is running in Debug mode.
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Debug bool
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// RegistryConfig is the path to the registry config file.
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RegistryConfig string
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// RepositoryConfig is the path to the repositories file.
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RepositoryConfig string
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// RepositoryCache is the path to the repository cache directory.
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RepositoryCache string
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// PluginsDirectory is the path to the plugins directory.
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PluginsDirectory string
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}
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func New() *EnvSettings {
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env := EnvSettings{
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namespace: os.Getenv("HELM_NAMESPACE"),
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KubeContext: os.Getenv("HELM_KUBECONTEXT"),
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PluginsDirectory: envOr("HELM_PLUGINS", helmpath.DataPath("plugins")),
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RegistryConfig: envOr("HELM_REGISTRY_CONFIG", helmpath.ConfigPath("registry.json")),
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RepositoryConfig: envOr("HELM_REPOSITORY_CONFIG", helmpath.ConfigPath("repositories.yaml")),
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RepositoryCache: envOr("HELM_REPOSITORY_CACHE", helmpath.CachePath("repository")),
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}
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env.Debug, _ = strconv.ParseBool(os.Getenv("HELM_DEBUG"))
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return &env
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}
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// AddFlags binds flags to the given flagset.
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func (s *EnvSettings) AddFlags(fs *pflag.FlagSet) {
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fs.StringVarP(&s.namespace, "namespace", "n", s.namespace, "namespace scope for this request")
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fs.StringVar(&s.KubeConfig, "kubeconfig", "", "path to the kubeconfig file")
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fs.StringVar(&s.KubeContext, "kube-context", s.KubeContext, "name of the kubeconfig context to use")
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fs.BoolVar(&s.Debug, "debug", s.Debug, "enable verbose output")
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fs.StringVar(&s.RegistryConfig, "registry-config", s.RegistryConfig, "path to the registry config file")
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fs.StringVar(&s.RepositoryConfig, "repository-config", s.RepositoryConfig, "path to the file containing repository names and URLs")
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fs.StringVar(&s.RepositoryCache, "repository-cache", s.RepositoryCache, "path to the file containing cached repository indexes")
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}
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func envOr(name, def string) string {
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if v, ok := os.LookupEnv(name); ok {
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return v
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}
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return def
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}
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func (s *EnvSettings) EnvVars() map[string]string {
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envvars := map[string]string{
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"HELM_BIN": os.Args[0],
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"HELM_DEBUG": fmt.Sprint(s.Debug),
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"HELM_PLUGINS": s.PluginsDirectory,
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"HELM_REGISTRY_CONFIG": s.RegistryConfig,
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"HELM_REPOSITORY_CACHE": s.RepositoryCache,
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"HELM_REPOSITORY_CONFIG": s.RepositoryConfig,
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"HELM_NAMESPACE": s.Namespace(),
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"HELM_KUBECONTEXT": s.KubeContext,
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}
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if s.KubeConfig != "" {
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envvars["KUBECONFIG"] = s.KubeConfig
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}
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return envvars
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}
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//Namespace gets the namespace from the configuration
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func (s *EnvSettings) Namespace() string {
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if s.namespace != "" {
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return s.namespace
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}
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if ns, _, err := s.RESTClientGetter().ToRawKubeConfigLoader().Namespace(); err == nil {
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return ns
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}
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return "default"
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}
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//RESTClientGetter gets the kubeconfig from EnvSettings
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func (s *EnvSettings) RESTClientGetter() genericclioptions.RESTClientGetter {
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s.configOnce.Do(func() {
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s.config = kube.GetConfig(s.KubeConfig, s.KubeContext, s.namespace)
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})
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return s.config
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}
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