Add 'apply' command.

cmd/apply.go

@@ -0,0 +1,46 @@
+/*
+Copyright 2017 The Kedge 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"
+	pkgcmd "github.com/kedgeproject/kedge/pkg/cmd"
+	"github.com/spf13/cobra"
+	"os"
+)
+
+// Variables
+var (
+	ApplyFiles []string
+)
+
+// Represents the "apply" command
+var applyCmd = &cobra.Command{
+	Use:   "apply",
+	Short: "Apply a configuration to a resource on the Kubernetes cluster. This resource will be created if it doesn't exist yet.",
+	Run: func(cmd *cobra.Command, args []string) {
+		if err := pkgcmd.ExecuteKubectl(ApplyFiles, "apply"); err != nil {
+			fmt.Println(err)
+			os.Exit(-1)
+		}
+	},
+}
+
+func init() {
+	applyCmd.Flags().StringArrayVarP(&ApplyFiles, "files", "f", []string{}, "Specify files")
+	RootCmd.AddCommand(applyCmd)
+}

cmd/create.go

@@ -33,7 +33,7 @@ var createCmd = &cobra.Command{
 	Use:   "create",
 	Short: "Create the resource on the Kubernetes cluster",
 	Run: func(cmd *cobra.Command, args []string) {
-		if err := pkgcmd.Create(CreateFiles); err != nil {
+		if err := pkgcmd.ExecuteKubectl(CreateFiles, "create"); err != nil {
 			fmt.Println(err)
 			os.Exit(-1)
 		}

cmd/delete.go

@@ -33,7 +33,7 @@ var deleteCmd = &cobra.Command{
 	Use:   "delete",
 	Short: "Delete the resource from the Kubernetes cluster",
 	Run: func(cmd *cobra.Command, args []string) {
-		if err := pkgcmd.Delete(DeleteFiles); err != nil {
+		if err := pkgcmd.ExecuteKubectl(DeleteFiles, "delete"); err != nil {
 			fmt.Println(err)
 			os.Exit(-1)
 		}

pkg/cmd/kubernetes.go

@@ -28,19 +28,7 @@ import (
 	"github.com/pkg/errors"
 )
 
-func Delete(files []string) error {
-	return executeKubectl(files, true)
-}
-
-func Create(files []string) error {
-	return executeKubectl(files, false)
-}
-
-func executeKubectl(files []string, delete bool) error {
-	command := "create"
-	if delete {
-		command = "delete"
-	}
+func ExecuteKubectl(files []string, command string) error {
 
 	appData, err := getApplicationsFromFiles(files)
 	if err != nil {