root.go

// Copyright © 2017 The Kubicorn Authors
//
// 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"
	"os"

	"github.com/kubicorn/kubicorn/pkg/logger"
	"github.com/spf13/cobra"
	"github.com/spf13/viper"
)

const (
	bashCompletionFunc = `
__kubicorn_parse_list()
{
    local kubicorn_out
    if kubicorn_out=$(kubicorn list --no-headers 2>/dev/null); then
        COMPREPLY=( $( compgen -W "${kubicorn_out[*]}" -- "$cur" ) )
    fi
}
__kubicorn_parse_profiles()
{
    local kubicorn_out
    if kubicorn_out=(amazon aws digitalocean do); then
        COMPREPLY=( $( compgen -W "${kubicorn_out[*]}" -- "$cur" ) )
    fi
}
__custom_func() {
    case ${last_command} in
        kubicorn_apply | kubicorn_create | kubicorn_delete | kubicorn_getconfig)
            __kubicorn_parse_list
            return
            ;;
        *)
            ;;
    esac
}
`
)

// RootCmd represents the base command when called without any subcommands
var RootCmd = &cobra.Command{
	Use:   "kubicorn",
	Short: "Kubernetes cluster management, without any magic",
	Long: fmt.Sprintf(`
%s
`, Unicorn),
	Run: func(cmd *cobra.Command, args []string) {
		if logger.Fabulous {
			cmd.SetOutput(logger.FabulousWriter)
		}
		if viper.GetString(keyTrueColor) != "" {
			cmd.SetOutput(logger.FabulousTrueWriter)
		}
		cmd.Help()
	},
	BashCompletionFunction: bashCompletionFunc,
}

// Execute performs root command task.
func Execute() {
	if err := RootCmd.Execute(); err != nil {
		fmt.Println(err)
		os.Exit(-1)
	}
}

func init() {
	//flags here
	RootCmd.PersistentFlags().IntVarP(&logger.Level, "verbose", "v", 3, "Log level")
	RootCmd.PersistentFlags().BoolVarP(&logger.Color, "color", "X", true, "Toggle colorized logs")
	RootCmd.PersistentFlags().BoolVarP(&logger.Fabulous, "fab", "f", false, "Toggle colorized logs")

	// bind environment vars
	bindEnvVars()

	// init viper defaults
	initEnvDefaults()

	// add commands
	addCommands()
}

func addCommands() {
	RootCmd.AddCommand(AdoptCmd())
	RootCmd.AddCommand(ApplyCmd())
	RootCmd.AddCommand(CompletionCmd())
	RootCmd.AddCommand(CreateCmd())
	RootCmd.AddCommand(DeleteCmd())
	RootCmd.AddCommand(EditCmd())
	RootCmd.AddCommand(ExplainCmd())
	RootCmd.AddCommand(GetConfigCmd())
	RootCmd.AddCommand(ImageCmd())
	RootCmd.AddCommand(ListCmd())
	RootCmd.AddCommand(VersionCmd())
	RootCmd.AddCommand(DeployControllerCmd())
	RootCmd.AddCommand(CRDCmd())

	// Add Prompt at the end to initialize all the other commands first.
	RootCmd.AddCommand(PromptCmd())
}

func flagApplyAnnotations(cmd *cobra.Command, flag, completion string) {
	if cmd.Flag(flag) != nil {
		if cmd.Flag(flag).Annotations == nil {
			cmd.Flag(flag).Annotations = map[string][]string{}
		}
		cmd.Flag(flag).Annotations[cobra.BashCompCustom] = append(
			cmd.Flag(flag).Annotations[cobra.BashCompCustom],
			completion,
		)
	}
}