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191 lines
5.5 KiB
191 lines
5.5 KiB
/*
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Copyright © 2020 The k3d Author(s)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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package cmd
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import (
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"strings"
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"github.com/spf13/cobra"
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"github.com/rancher/k3d/cmd/create"
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"github.com/rancher/k3d/cmd/delete"
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"github.com/rancher/k3d/cmd/get"
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"github.com/rancher/k3d/cmd/load"
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"github.com/rancher/k3d/cmd/start"
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"github.com/rancher/k3d/cmd/stop"
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"github.com/rancher/k3d/pkg/runtimes"
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"github.com/rancher/k3d/version"
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log "github.com/sirupsen/logrus"
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"github.com/sirupsen/logrus/hooks/writer"
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)
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// RootFlags describes a struct that holds flags that can be set on root level of the command
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type RootFlags struct {
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debugLogging bool
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version bool
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}
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var flags = RootFlags{}
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// var cfgFile string
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// rootCmd represents the base command when called without any subcommands
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var rootCmd = &cobra.Command{
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Use: "k3d",
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Short: "https://k3d.io/ -> Run k3s in Docker!",
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Long: `https://k3d.io/
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k3d is a wrapper CLI that helps you to easily create k3s clusters inside docker.
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Nodes of a k3d cluster are docker containers running a k3s image.
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All Nodes of a k3d cluster are part of the same docker network.`,
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Run: func(cmd *cobra.Command, args []string) {
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if flags.version {
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printVersion()
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} else {
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if err := cmd.Usage(); err != nil {
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log.Fatalln(err)
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}
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}
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},
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}
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// Execute adds all child commands to the root command and sets flags appropriately.
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// This is called by main.main(). It only needs to happen once to the rootCmd.
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func Execute() {
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if err := rootCmd.Execute(); err != nil {
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log.Fatalln(err)
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}
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}
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func init() {
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cobra.OnInitialize(initLogging, initRuntime)
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// add persistent flags (present to all subcommands)
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// rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.k3d/config.yaml)")
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rootCmd.PersistentFlags().BoolVar(&flags.debugLogging, "verbose", false, "Enable verbose output (debug logging)")
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// add local flags
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rootCmd.Flags().BoolVar(&flags.version, "version", false, "Show k3d and default k3s version")
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// add subcommands
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rootCmd.AddCommand(NewCmdCompletion())
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rootCmd.AddCommand(create.NewCmdCreate())
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rootCmd.AddCommand(delete.NewCmdDelete())
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rootCmd.AddCommand(get.NewCmdGet())
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rootCmd.AddCommand(stop.NewCmdStop())
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rootCmd.AddCommand(start.NewCmdStart())
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rootCmd.AddCommand(load.NewCmdLoad())
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rootCmd.AddCommand(&cobra.Command{
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Use: "version",
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Short: "Print k3d version",
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Long: "Print k3d version",
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Run: func(cmd *cobra.Command, args []string) {
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printVersion()
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},
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})
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}
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// initLogging initializes the logger
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func initLogging() {
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if flags.debugLogging {
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log.SetLevel(log.DebugLevel)
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} else {
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switch logLevel := strings.ToUpper(os.Getenv("LOG_LEVEL")); logLevel {
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case "DEBUG":
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log.SetLevel(log.DebugLevel)
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case "WARN":
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log.SetLevel(log.WarnLevel)
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case "ERROR":
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log.SetLevel(log.ErrorLevel)
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default:
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log.SetLevel(log.InfoLevel)
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}
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}
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log.SetOutput(ioutil.Discard)
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log.AddHook(&writer.Hook{
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Writer: os.Stderr,
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LogLevels: []log.Level{
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log.PanicLevel,
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log.FatalLevel,
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log.ErrorLevel,
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log.WarnLevel,
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},
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})
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log.AddHook(&writer.Hook{
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Writer: os.Stdout,
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LogLevels: []log.Level{
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log.InfoLevel,
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log.DebugLevel,
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},
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})
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log.SetFormatter(&log.TextFormatter{
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ForceColors: true,
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})
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}
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func initRuntime() {
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runtime, err := runtimes.GetRuntime("docker")
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if err != nil {
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log.Fatalln(err)
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}
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runtimes.SelectedRuntime = runtime
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log.Debugf("Selected runtime is '%T'", runtimes.SelectedRuntime)
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}
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func printVersion() {
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fmt.Printf("k3d version %s\n", version.GetVersion())
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fmt.Printf("k3s version %s (default)\n", version.K3sVersion)
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}
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// Completion
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var completionFunctions = map[string]func(io.Writer) error{
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"bash": rootCmd.GenBashCompletion,
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"zsh": rootCmd.GenZshCompletion,
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"psh": rootCmd.GenPowerShellCompletion,
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"powershell": rootCmd.GenPowerShellCompletion,
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}
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// NewCmdCompletion creates a new completion command
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func NewCmdCompletion() *cobra.Command {
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// create new cobra command
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cmd := &cobra.Command{
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Use: "completion SHELL",
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Short: "Generate completion scripts for [bash, zsh, powershell | psh]",
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Long: `Generate completion scripts for [bash, zsh, powershell | psh]`,
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Args: cobra.ExactArgs(1), // TODO: NewCmdCompletion: add support for 0 args = auto detection
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Run: func(cmd *cobra.Command, args []string) {
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if f, ok := completionFunctions[args[0]]; ok {
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if err := f(os.Stdout); err != nil {
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log.Fatalf("Failed to generate completion script for shell '%s'", args[0])
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}
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return
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}
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log.Fatalf("Shell '%s' not supported for completion", args[0])
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},
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}
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return cmd
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}
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