kubectl: kubecfg rewrite for better modularity and improved UX

pkg/kubectl/cmd/get.go

@@ -0,0 +1,70 @@
+/*
+Copyright 2014 Google Inc. 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 (
+	"io"
+
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/kubectl"
+	"github.com/spf13/cobra"
+)
+
+func NewCmdGet(out io.Writer) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "get [(-o|--output=)table|json|yaml|template] [-t <file>|--template=<file>] <resource> [<id>]",
+		Short: "Display one or many resources",
+		Long: `Display one or many resources.
+
+Possible resources include pods (po), replication controllers (rc), services
+(se) or minions (mi).
+
+If you specify a Go template, you can use any field defined in pkg/api/types.go.
+
+Examples:
+  $ kubectl get pods
+  <list all pods in ps output format>
+
+  $ kubectl get replicationController 1234-56-7890-234234-456456
+  <list single repliaction controller in ps output format>
+
+  $ kubectl get -f json pod 1234-56-7890-234234-456456
+  <list single pod in json output format>`,
+		Run: func(cmd *cobra.Command, args []string) {
+			var resource, id string
+			if len(args) == 0 {
+				usageError(cmd, "Need to supply a resource.")
+			}
+			if len(args) >= 1 {
+				resource = args[0]
+			}
+			if len(args) >= 2 {
+				id = args[1]
+			}
+			outputFormat := getFlagString(cmd, "output")
+			templateFile := getFlagString(cmd, "template")
+			selector := getFlagString(cmd, "selector")
+			err := kubectl.Get(out, getKubeClient(cmd).RESTClient, resource, id, selector, outputFormat, templateFile)
+			checkErr(err)
+		},
+	}
+	// TODO Add an --output-version lock which can ensure that regardless of the
+	// server version, the client output stays the same.
+	cmd.Flags().StringP("output", "o", "console", "Output format: console|json|yaml|template")
+	cmd.Flags().StringP("template", "t", "", "Path to template file to use when --output=template")
+	cmd.Flags().StringP("selector", "l", "", "Selector (label query) to filter on")
+	return cmd
+}