122 lines
3.3 KiB
Go
122 lines
3.3 KiB
Go
package cmd
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import (
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"fmt"
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"github.com/wagoodman/dive/utils"
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"io/ioutil"
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"os"
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"github.com/k0kubun/go-ansi"
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"github.com/mitchellh/go-homedir"
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log "github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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)
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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: "dive [IMAGE]",
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Short: "Docker Image Visualizer & Explorer",
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Long: `This tool provides a way to discover and explore the contents of a docker image. Additionally the tool estimates
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the amount of wasted space and identifies the offending files from the image.`,
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Args: cobra.MaximumNArgs(1),
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Run: analyze,
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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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func Execute() {
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if err := rootCmd.Execute(); err != nil {
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fmt.Println(err)
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utils.Exit(1)
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}
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}
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func init() {
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ansi.CursorHide()
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cobra.OnInitialize(initConfig)
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cobra.OnInitialize(initLogging)
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rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.dive.yaml)")
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rootCmd.PersistentFlags().BoolP("version", "v", false, "display version number")
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}
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// initConfig reads in config file and ENV variables if set.
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func initConfig() {
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if cfgFile != "" {
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// Use config file from the flag.
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viper.SetConfigFile(cfgFile)
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} else {
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// Find home directory.
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home, err := homedir.Dir()
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if err != nil {
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fmt.Println(err)
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utils.Exit(1)
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}
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// Search config in home directory with name ".dive" (without extension).
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viper.AddConfigPath(home)
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viper.SetConfigName(".dive")
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}
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viper.SetDefault("log.level", log.InfoLevel.String())
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viper.SetDefault("log.path", "./dive.log")
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viper.SetDefault("log.enabled", true)
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// status view / global
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viper.SetDefault("keybinding.quit", "ctrl+c")
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viper.SetDefault("keybinding.toggle-view", "tab, ctrl+space")
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viper.SetDefault("keybinding.filter-files", "ctrl+f, ctrl+slash")
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// layer view
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viper.SetDefault("keybinding.compare-all", "ctrl+a")
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viper.SetDefault("keybinding.compare-layer", "ctrl+l")
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// filetree view
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viper.SetDefault("keybinding.toggle-collapse-dir", "space")
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viper.SetDefault("keybinding.toggle-added-files", "ctrl+a")
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viper.SetDefault("keybinding.toggle-removed-files", "ctrl+r")
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viper.SetDefault("keybinding.toggle-modified-files", "ctrl+m")
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viper.SetDefault("keybinding.toggle-unchanged-files", "ctrl+u")
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viper.SetDefault("keybinding.page-up", "pgup")
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viper.SetDefault("keybinding.page-down", "pgdn")
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viper.AutomaticEnv() // read in environment variables that match
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// If a config file is found, read it in.
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if err := viper.ReadInConfig(); err == nil {
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fmt.Println("Using config file:", viper.ConfigFileUsed())
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}
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}
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// initLogging sets up the logging object with a formatter and location
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func initLogging() {
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if viper.GetBool("log.enabled") == false {
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log.SetOutput(ioutil.Discard)
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}
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logFileObj, err := os.OpenFile(viper.GetString("log.path"), os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0644)
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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}
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Formatter := new(log.TextFormatter)
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Formatter.DisableTimestamp = true
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log.SetFormatter(Formatter)
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level, err := log.ParseLevel(viper.GetString("log.level"))
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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}
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log.SetLevel(level)
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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} else {
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log.SetOutput(logFileObj)
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}
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log.Debug("Starting Dive...")
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}
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