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drop.go
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drop.go
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// Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 (
"errors"
"fmt"
"strings"
"github.com/spf13/cobra"
)
// NewDropCmd returns a new drop command.
func NewDropCmd(targetReader TargetReader, targetWriter TargetWriter, ioStreams IOStreams) *cobra.Command {
cmd := &cobra.Command{
Use: "drop [(project|seed)]",
Short: "Drop scope for next operations (default: last target), e.g. \"gardenctl drop\" drops last target, \"gardenctl drop project\" drops project in current stack",
SilenceUsage: true,
RunE: func(cmd *cobra.Command, args []string) error {
if len(args) > 1 {
return errors.New("command must be in the format: gardenctl drop [(project|seed)]")
}
if len(args) == 0 {
target := targetReader.ReadTarget(pathTarget)
stackLength := len(target.Stack())
if stackLength == 0 {
return errors.New("target stack is empty")
}
fmt.Fprintf(ioStreams.Out, "Dropped %s %s\n", target.Stack()[stackLength-1].Kind, target.Stack()[stackLength-1].Name)
if target.Stack()[stackLength-1].Kind == "namespace" {
setNamespaceDefault()
}
target.SetStack(target.Stack()[:stackLength-1])
if err := targetWriter.WriteTarget(pathTarget, target); err != nil {
return err
}
} else if len(args) == 1 {
var target Target
ReadTarget(pathTarget, &target)
switch args[0] {
case "project":
if len(target.Target) == 2 && target.Target[1].Kind == "project" {
drop(targetWriter)
fmt.Printf("Dropped %s %s\n", target.Target[1].Kind, target.Target[1].Name)
} else if len(target.Target) == 3 && target.Target[1].Kind == "project" {
drop(targetWriter)
drop(targetWriter)
fmt.Printf("Dropped %s %s\n", target.Target[2].Kind, target.Target[2].Name)
fmt.Printf("Dropped %s %s\n", target.Target[1].Kind, target.Target[1].Name)
} else if len(target.Target) == 4 && target.Target[1].Kind == "project" {
drop(targetWriter)
drop(targetWriter)
drop(targetWriter)
fmt.Printf("Dropped %s %s\n", target.Target[3].Kind, target.Target[3].Name)
fmt.Printf("Dropped %s %s\n", target.Target[2].Kind, target.Target[2].Name)
fmt.Printf("Dropped %s %s\n", target.Target[1].Kind, target.Target[1].Name)
} else {
fmt.Println("A seed is targeted")
}
case "seed":
if len(target.Target) == 2 && target.Target[1].Kind == "seed" {
drop(targetWriter)
fmt.Printf("Dropped %s %s\n", target.Target[1].Kind, target.Target[1].Name)
} else if len(target.Target) == 3 && target.Target[1].Kind == "seed" {
drop(targetWriter)
drop(targetWriter)
fmt.Printf("Dropped %s %s\n", target.Target[2].Kind, target.Target[2].Name)
fmt.Printf("Dropped %s %s\n", target.Target[1].Kind, target.Target[1].Name)
} else if len(target.Target) == 4 && target.Target[1].Kind == "seed" {
drop(targetWriter)
drop(targetWriter)
drop(targetWriter)
fmt.Printf("Dropped %s %s\n", target.Target[3].Kind, target.Target[3].Name)
fmt.Printf("Dropped %s %s\n", target.Target[2].Kind, target.Target[2].Name)
fmt.Printf("Dropped %s %s\n", target.Target[1].Kind, target.Target[1].Name)
} else {
fmt.Println("A project is targeted")
}
case "namespace":
if len(target.Target) > 1 && len(target.Target) < 5 {
if target.Target[len(target.Target)-1].Kind == "namespace" {
setNamespaceDefault()
drop(targetWriter)
fmt.Printf("Dropped %s %s\n", target.Target[len(target.Target)-1].Kind, target.Target[len(target.Target)-1].Name)
} else {
fmt.Println("No namespace targeted")
}
} else if len(target.Target) == 1 {
fmt.Println("Only Garden is targeted, no namespace info")
} else {
fmt.Println("Size of target stack is illegal")
}
default:
fmt.Println("Command must be in the format: gardenctl drop <project|seed|namespace>")
}
}
return nil
},
ValidArgs: []string{"project", "seed", "namespace"},
}
return cmd
}
// drop drops target until stack is empty
func drop(targetWriter TargetWriter) {
var target Target
ReadTarget(pathTarget, &target)
if len(target.Target) > 0 {
target.Target = target.Target[:len(target.Target)-1]
} else {
fmt.Println("Target stack is empty")
}
err := targetWriter.WriteTarget(pathTarget, &target)
checkError(err)
KUBECONFIG = getKubeConfigOfCurrentTarget()
}
//set current namespace to default
func setNamespaceDefault() {
cfg := getKubeConfigOfCurrentTarget()
out, err := ExecCmdReturnOutput("kubectl", "--kubeconfig="+cfg, "config", "current-context")
if err != nil {
fmt.Println(err)
}
currentConext := strings.TrimSuffix(string(out), "\n")
_, err = ExecCmdReturnOutput("kubectl", "--kubeconfig="+cfg, "config", "set-context "+currentConext, " --namespace=default")
if err != nil {
fmt.Println(err)
}
}