change cluster schema (#2026)

* change cluster schema

* change cluster schema

vendor/sigs.k8s.io/kubefed/pkg/kubefedctl/options/options.go

@@ -0,0 +1,159 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package options
+
+import (
+	"context"
+
+	"github.com/pkg/errors"
+	"github.com/spf13/pflag"
+
+	apiextv1b1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/client-go/rest"
+	"k8s.io/client-go/tools/clientcmd"
+
+	fedv1b1 "sigs.k8s.io/kubefed/pkg/apis/core/v1beta1"
+	genericclient "sigs.k8s.io/kubefed/pkg/client/generic"
+	"sigs.k8s.io/kubefed/pkg/controller/util"
+)
+
+// GlobalSubcommandOptions holds the configuration required by the subcommands of
+// `kubefedctl`.
+type GlobalSubcommandOptions struct {
+	HostClusterContext string
+	KubeFedNamespace   string
+	Kubeconfig         string
+	DryRun             bool
+}
+
+// GlobalSubcommandBind adds the global subcommand flags to the flagset passed in.
+func (o *GlobalSubcommandOptions) GlobalSubcommandBind(flags *pflag.FlagSet) {
+	flags.StringVar(&o.Kubeconfig, "kubeconfig", "", "Path to the kubeconfig file to use for CLI requests.")
+	flags.StringVar(&o.HostClusterContext, "host-cluster-context", "", "Host cluster context")
+	flags.StringVar(&o.KubeFedNamespace, "kubefed-namespace", util.DefaultKubeFedSystemNamespace,
+		"Namespace in the host cluster where the KubeFed system components are installed. This namespace will also be the target of propagation if the controller manager is running with namespaced scope.")
+	flags.BoolVar(&o.DryRun, "dry-run", false,
+		"Run the command in dry-run mode, without making any server requests.")
+}
+
+// SetHostClusterContextFromConfig sets the host cluster context to
+// the name of the the config context if a value was not provided.
+func (o *GlobalSubcommandOptions) SetHostClusterContextFromConfig(config clientcmd.ClientConfig) error {
+	if len(o.HostClusterContext) > 0 {
+		return nil
+	}
+	currentContext, err := CurrentContext(config)
+	if err != nil {
+		return err
+	}
+	o.HostClusterContext = currentContext
+	return nil
+}
+
+// CurrentContext retrieves the current context from the provided config.
+func CurrentContext(config clientcmd.ClientConfig) (string, error) {
+	rawConfig, err := config.RawConfig()
+	if err != nil {
+		return "", errors.Wrap(err, "Failed to get current context from config")
+	}
+	return rawConfig.CurrentContext, nil
+}
+
+// CommonJoinOptions holds the common configuration required by the join and
+// unjoin subcommands of `kubefedctl`.
+type CommonJoinOptions struct {
+	ClusterName     string
+	ClusterContext  string
+	HostClusterName string
+}
+
+// CommonSubcommandBind adds the common subcommand flags to the flagset passed in.
+func (o *CommonJoinOptions) CommonSubcommandBind(flags *pflag.FlagSet) {
+	flags.StringVar(&o.ClusterContext, "cluster-context", "",
+		"Name of the cluster's context in the local kubeconfig. Defaults to cluster name if unspecified.")
+	flags.StringVar(&o.HostClusterName, "host-cluster-name", "",
+		"If set, overrides the use of host-cluster-context name in resource names created in the target cluster. This option must be used when the context name has characters invalid for kubernetes resources like \"/\" and \":\".")
+}
+
+// SetName sets the name from the args passed in for the required positional
+// argument.
+func (o *CommonJoinOptions) SetName(args []string) error {
+	if len(args) == 0 {
+		return errors.New("NAME is required")
+	}
+
+	o.ClusterName = args[0]
+	return nil
+}
+
+func GetScopeFromKubeFedConfig(hostConfig *rest.Config, namespace string) (apiextv1b1.ResourceScope, error) {
+	client, err := genericclient.New(hostConfig)
+	if err != nil {
+		err = errors.Wrap(err, "Failed to get kubefed clientset")
+		return "", err
+	}
+
+	fedConfig := &fedv1b1.KubeFedConfig{}
+	err = client.Get(context.TODO(), fedConfig, namespace, util.KubeFedConfigName)
+	if apierrors.IsNotFound(err) {
+		return "", errors.Errorf(
+			"A KubeFedConfig named %q was not found in namespace %q. Is a KubeFed control plane running in this namespace?",
+			util.KubeFedConfigName, namespace)
+	} else if err != nil {
+		config := util.QualifiedName{
+			Namespace: namespace,
+			Name:      util.KubeFedConfigName,
+		}
+		err = errors.Wrapf(err, "Error retrieving KubeFedConfig %q", config)
+		return "", err
+	}
+
+	return fedConfig.Spec.Scope, nil
+}
+
+// CommonEnableOptions holds the common configuration required by the enable
+// and disable subcommands of `kubefedctl`.
+type CommonEnableOptions struct {
+	TargetName     string
+	FederatedGroup string
+	TargetVersion  string
+}
+
+// Default values for the federated group and version used by
+// the enable and disable subcommands of `kubefedctl`.
+const (
+	DefaultFederatedGroup   = "types.kubefed.io"
+	DefaultFederatedVersion = "v1beta1"
+)
+
+// CommonSubcommandBind adds the common subcommand flags to the flagset passed in.
+func (o *CommonEnableOptions) CommonSubcommandBind(flags *pflag.FlagSet, federatedGroupUsage, targetVersionUsage string) {
+	flags.StringVar(&o.FederatedGroup, "federated-group", DefaultFederatedGroup, federatedGroupUsage)
+	flags.StringVar(&o.TargetVersion, "version", "", targetVersionUsage)
+}
+
+// SetName sets the name from the args passed in for the required positional
+// argument.
+func (o *CommonEnableOptions) SetName(args []string) error {
+	if len(args) == 0 {
+		return errors.New("NAME is required")
+	}
+
+	o.TargetName = args[0]
+	return nil
+}