mirror of
https://github.com/wahyd4/cert-manager.git
synced 2026-08-10 21:56:02 +10:00
114 lines
3.2 KiB
Go
114 lines
3.2 KiB
Go
/*
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Copyright 2021 The cert-manager 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 factory
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import (
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"context"
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"github.com/spf13/cobra"
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"k8s.io/cli-runtime/pkg/genericclioptions"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/rest"
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"k8s.io/kubectl/pkg/cmd/util"
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// Load all auth plugins
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_ "k8s.io/client-go/plugin/pkg/client/auth"
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cmclient "github.com/jetstack/cert-manager/pkg/client/clientset/versioned"
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)
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var (
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kubeConfigFlags = genericclioptions.NewConfigFlags(true)
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factory = util.NewFactory(kubeConfigFlags)
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)
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// Factory provides a set of clients and configurations to authenticate and
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// access a target Kubernetes cluster. Factory will ensure that its fields are
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// populated and valid during command execution.
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type Factory struct {
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// Namespace is the namespace that the user has requested with the
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// "--namespace" / "-n" flag. Defaults to "default" if the flag was not
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// provided.
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Namespace string
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// EnforceNamespace will be true if the user provided the namespace flag.
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EnforceNamespace bool
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// RESTConfig is a Kubernetes REST config that contains the user's
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// authentication and access configuration.
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RESTConfig *rest.Config
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// CMClient is a Kubernetes clientset for interacting with cert-manager APIs.
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CMClient cmclient.Interface
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// KubeClient is a Kubernetes clientset for interacting with the base
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// Kubernetes APIs.
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KubeClient kubernetes.Interface
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}
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// New returns a new Factory. The supplied command will have flags registered
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// for interacting with the Kubernetes access options. Factory will be
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// populated when the command is executed using the cobra PreRun. If a PreRun
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// is already defined, it will be executed _after_ Factory has been populated,
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// making it available.
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func New(ctx context.Context, cmd *cobra.Command) *Factory {
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f := new(Factory)
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kubeConfigFlags.AddFlags(cmd.Flags())
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cmd.RegisterFlagCompletionFunc("namespace", validArgsListNamespaces(ctx, f))
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// Setup a PreRun to populate the Factory. Catch the existing PreRun command
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// if one was defined, and execute it second.
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existingPreRun := cmd.PreRun
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cmd.PreRun = func(cmd *cobra.Command, args []string) {
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util.CheckErr(f.complete())
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if existingPreRun != nil {
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existingPreRun(cmd, args)
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}
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}
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return f
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}
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// complete will populate the Factory with values using the shared Kubernetes
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// CLI factory.
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func (f *Factory) complete() error {
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var err error
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f.Namespace, f.EnforceNamespace, err = factory.ToRawKubeConfigLoader().Namespace()
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if err != nil {
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return err
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}
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f.RESTConfig, err = factory.ToRESTConfig()
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if err != nil {
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return err
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}
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f.KubeClient, err = kubernetes.NewForConfig(f.RESTConfig)
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if err != nil {
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return err
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}
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f.CMClient, err = cmclient.NewForConfig(f.RESTConfig)
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if err != nil {
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return err
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}
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return nil
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}
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