Add kubectl create [SUBCOMMAND] pattern

pkg/kubectl/cmd/create_namespace.go

@@ -0,0 +1,75 @@
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+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 cmd
+
+import (
+	"fmt"
+	"io"
+
+	"github.com/spf13/cobra"
+
+	"k8s.io/kubernetes/pkg/kubectl"
+	cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
+)
+
+const (
+	namespaceLong = `
+Create a namespace with the specified name.`
+
+	namespaceExample = `  # Create a new namespace named my-namespace
+  $ kubectl create namespace my-namespace`
+)
+
+// NewCmdCreateNamespace is a macro command to create a new namespace
+func NewCmdCreateNamespace(f *cmdutil.Factory, cmdOut io.Writer) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:     "namespace NAME [--dry-run]",
+		Aliases: []string{"ns"},
+		Short:   "Create a namespace with the specified name.",
+		Long:    namespaceLong,
+		Example: namespaceExample,
+		Run: func(cmd *cobra.Command, args []string) {
+			err := CreateNamespace(f, cmdOut, cmd, args)
+			cmdutil.CheckErr(err)
+		},
+	}
+	cmdutil.AddApplyAnnotationFlags(cmd)
+	cmdutil.AddValidateFlags(cmd)
+	cmdutil.AddGeneratorFlags(cmd, cmdutil.NamespaceV1GeneratorName)
+	return cmd
+}
+
+// CreateNamespace implements the behavior to run the create namespace command
+func CreateNamespace(f *cmdutil.Factory, cmdOut io.Writer, cmd *cobra.Command, args []string) error {
+	name, err := NameFromCommandArgs(cmd, args)
+	if err != nil {
+		return err
+	}
+	var generator kubectl.StructuredGenerator
+	switch generatorName := cmdutil.GetFlagString(cmd, "generator"); generatorName {
+	case cmdutil.NamespaceV1GeneratorName:
+		generator = &kubectl.NamespaceGeneratorV1{Name: name}
+	default:
+		return cmdutil.UsageError(cmd, fmt.Sprintf("Generator: %s not supported.", generatorName))
+	}
+	return RunCreateSubcommand(f, cmd, cmdOut, &CreateSubcommandOptions{
+		Name:                name,
+		StructuredGenerator: generator,
+		DryRun:              cmdutil.GetFlagBool(cmd, "dry-run"),
+		OutputFormat:        cmdutil.GetFlagString(cmd, "output"),
+	})
+}