mirror of
https://github.com/vmware-tanzu/velero.git
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816f14c0b4
Add the ability for the Ark server to run in any namespace. Add `ark client config get/set` for manipulating the new client configuration file in $HOME/.config/ark/config.json. This holds client defaults, such as the Ark server's namespace (to avoid having to specify the --namespace flag all the time). Add a --namespace flag to all client commands. Signed-off-by: Andy Goldstein <andy.goldstein@gmail.com>
108 lines
3.0 KiB
Go
108 lines
3.0 KiB
Go
/*
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Copyright 2017 the Heptio Ark contributors.
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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 client
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import (
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"fmt"
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"os"
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"github.com/pkg/errors"
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"github.com/spf13/pflag"
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"k8s.io/client-go/kubernetes"
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"github.com/heptio/ark/pkg/apis/ark/v1"
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clientset "github.com/heptio/ark/pkg/generated/clientset/versioned"
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)
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// Factory knows how to create an ArkClient and Kubernetes client.
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type Factory interface {
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// BindFlags binds common flags (--kubeconfig, --namespace) to the passed-in FlagSet.
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BindFlags(flags *pflag.FlagSet)
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// Client returns an ArkClient. It uses the following priority to specify the cluster
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// configuration: --kubeconfig flag, KUBECONFIG environment variable, in-cluster configuration.
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Client() (clientset.Interface, error)
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// KubeClient returns a Kubernetes client. It uses the following priority to specify the cluster
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// configuration: --kubeconfig flag, KUBECONFIG environment variable, in-cluster configuration.
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KubeClient() (kubernetes.Interface, error)
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Namespace() string
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}
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type factory struct {
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flags *pflag.FlagSet
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kubeconfig string
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baseName string
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namespace string
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}
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// NewFactory returns a Factory.
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func NewFactory(baseName string) Factory {
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f := &factory{
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flags: pflag.NewFlagSet("", pflag.ContinueOnError),
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baseName: baseName,
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}
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if config, err := LoadConfig(); err == nil {
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f.namespace = config[ConfigKeyNamespace]
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} else {
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fmt.Fprintf(os.Stderr, "WARNING: error retrieving namespace from config file: %v\n", err)
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}
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if f.namespace == "" {
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f.namespace = v1.DefaultNamespace
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}
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f.flags.StringVar(&f.kubeconfig, "kubeconfig", "", "Path to the kubeconfig file to use to talk to the Kubernetes apiserver. If unset, try the environment variable KUBECONFIG, as well as in-cluster configuration")
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f.flags.StringVarP(&f.namespace, "namespace", "n", f.namespace, "The namespace in which Ark should operate")
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return f
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}
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func (f *factory) BindFlags(flags *pflag.FlagSet) {
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flags.AddFlagSet(f.flags)
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}
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func (f *factory) Client() (clientset.Interface, error) {
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clientConfig, err := Config(f.kubeconfig, f.baseName)
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if err != nil {
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return nil, err
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}
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arkClient, err := clientset.NewForConfig(clientConfig)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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return arkClient, nil
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}
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func (f *factory) KubeClient() (kubernetes.Interface, error) {
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clientConfig, err := Config(f.kubeconfig, f.baseName)
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if err != nil {
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return nil, err
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}
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kubeClient, err := kubernetes.NewForConfig(clientConfig)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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return kubeClient, nil
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}
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func (f *factory) Namespace() string {
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return f.namespace
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}
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