Added update backend CLI command

cli/cmd/create.go

@@ -4,6 +4,9 @@ package cmd
 
 import "github.com/spf13/cobra"
 
+var filename string
+var b64Data string
+
 func init() {
 	RootCmd.AddCommand(createCmd)
 }

cli/cmd/create_backend.go

@@ -17,9 +17,6 @@ import (
 	"github.com/netapp/trident/frontend/rest"
 )
 
-var filename string
-var b64Data string
-
 func init() {
 	createCmd.AddCommand(createBackendCmd)
 	createBackendCmd.Flags().StringVarP(&filename, "filename", "f", "", "Path to YAML or JSON file")
@@ -33,7 +30,7 @@ var createBackendCmd = &cobra.Command{
 	Aliases: []string{"b"},
 	RunE: func(cmd *cobra.Command, args []string) error {
 
-		jsonData, err := getBackendCreateData()
+		jsonData, err := getBackendData()
 		if err != nil {
 			return err
 		}
@@ -48,7 +45,7 @@ var createBackendCmd = &cobra.Command{
 	},
 }
 
-func getBackendCreateData() ([]byte, error) {
+func getBackendData() ([]byte, error) {
 
 	var err error
 	var rawData []byte

cli/cmd/delete_backend.go

@@ -19,7 +19,7 @@ func init() {
 }
 
 var deleteBackendCmd = &cobra.Command{
-	Use:     "backend",
+	Use:     "backend <name> [<name>...]",
 	Short:   "Delete one or more storage backends from Trident",
 	Aliases: []string{"b", "backends"},
 	RunE: func(cmd *cobra.Command, args []string) error {

cli/cmd/delete_storageclass.go

@@ -19,7 +19,7 @@ func init() {
 }
 
 var deleteStorageClassCmd = &cobra.Command{
-	Use:     "storageclass",
+	Use:     "storageclass <name> [<name>...]",
 	Short:   "Delete one or more storage classes from Trident",
 	Aliases: []string{"sc", "storageclasses"},
 	RunE: func(cmd *cobra.Command, args []string) error {

cli/cmd/delete_volume.go

@@ -19,7 +19,7 @@ func init() {
 }
 
 var deleteVolumeCmd = &cobra.Command{
-	Use:     "volume",
+	Use:     "volume <name> [<name>...]",
 	Short:   "Delete one or more storage volumes from Trident",
 	Aliases: []string{"b", "volumes"},
 	RunE: func(cmd *cobra.Command, args []string) error {

cli/cmd/get_backend.go

@@ -20,7 +20,7 @@ func init() {
 }
 
 var getBackendCmd = &cobra.Command{
-	Use:     "backend",
+	Use:     "backend [<name>...]",
 	Short:   "Get one or more storage backends from Trident",
 	Aliases: []string{"b", "backends"},
 	RunE: func(cmd *cobra.Command, args []string) error {

cli/cmd/get_storageclass.go

@@ -19,7 +19,7 @@ func init() {
 }
 
 var getStorageClassCmd = &cobra.Command{
-	Use:     "storageclass",
+	Use:     "storageclass [<name>...]",
 	Short:   "Get one or more storage classes from Trident",
 	Aliases: []string{"sc", "storageclasses"},
 	RunE: func(cmd *cobra.Command, args []string) error {

cli/cmd/get_volume.go

@@ -22,7 +22,7 @@ func init() {
 }
 
 var getVolumeCmd = &cobra.Command{
-	Use:     "volume",
+	Use:     "volume [<name>...]",
 	Short:   "Get one or more volumes from Trident",
 	Aliases: []string{"v", "volumes"},
 	RunE: func(cmd *cobra.Command, args []string) error {

cli/cmd/update.go

@@ -0,0 +1,18 @@
+// Copyright 2018 NetApp, Inc. All Rights Reserved.
+
+package cmd
+
+import "github.com/spf13/cobra"
+
+func init() {
+	RootCmd.AddCommand(updateCmd)
+}
+
+var updateCmd = &cobra.Command{
+	Use:   "update",
+	Short: "Modify a resource in Trident",
+	PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
+		err := discoverOperatingMode(cmd)
+		return err
+	},
+}

cli/cmd/update_backend.go

@@ -0,0 +1,93 @@
+// Copyright 2018 NetApp, Inc. All Rights Reserved.
+
+package cmd
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"net/http"
+
+	"github.com/spf13/cobra"
+
+	"github.com/netapp/trident/cli/api"
+	"github.com/netapp/trident/frontend/rest"
+)
+
+func init() {
+	updateCmd.AddCommand(updateBackendCmd)
+	updateBackendCmd.Flags().StringVarP(&filename, "filename", "f", "", "Path to YAML or JSON file")
+	updateBackendCmd.Flags().StringVarP(&b64Data, "base64", "", "", "Base64 encoding")
+	updateBackendCmd.Flags().MarkHidden("base64")
+}
+
+var updateBackendCmd = &cobra.Command{
+	Use:     "backend <name>",
+	Short:   "Update a backend in Trident",
+	Aliases: []string{"b"},
+	RunE: func(cmd *cobra.Command, args []string) error {
+
+		jsonData, err := getBackendData()
+		if err != nil {
+			return err
+		}
+
+		if OperatingMode == ModeTunnel {
+			command := []string{
+				"update", "backend",
+				"--base64", base64.StdEncoding.EncodeToString(jsonData),
+			}
+			TunnelCommand(append(command, args...))
+			return nil
+		} else {
+			return backendUpdate(args, jsonData)
+		}
+	},
+}
+
+func backendUpdate(backendNames []string, postData []byte) error {
+
+	switch len(backendNames) {
+	case 0:
+		return errors.New("backend name not specified")
+	case 1:
+		break
+	default:
+		return errors.New("multiple backend names specified")
+	}
+
+	baseURL, err := GetBaseURL()
+	if err != nil {
+		return err
+	}
+
+	// Send the file to Trident
+	url := baseURL + "/backend/" + backendNames[0]
+
+	response, responseBody, err := api.InvokeRESTAPI("POST", url, postData, Debug)
+	if err != nil {
+		return err
+	} else if response.StatusCode != http.StatusOK {
+		return errors.New(response.Status)
+	}
+
+	var updateBackendResponse rest.UpdateBackendResponse
+	err = json.Unmarshal(responseBody, &updateBackendResponse)
+	if err != nil {
+		return err
+	}
+
+	backends := make([]api.Backend, 0, 1)
+	backendName := updateBackendResponse.BackendID
+
+	// Retrieve the updated backend and write to stdout
+	backend, err := GetBackend(baseURL, backendName)
+	if err != nil {
+		return err
+	}
+	backends = append(backends, backend)
+
+	WriteBackends(backends)
+
+	return nil
+}

config/config.go

@@ -65,7 +65,7 @@ const (
 	ContextKubernetes DriverContext = "kubernetes"
 
 	// Minimum and maximum supported Kubernetes versions
-	KubernetesVersionMin = "v1.6.0"
+	KubernetesVersionMin = "v1.5.0"
 	KubernetesVersionMax = "v1.10.0"
 )