89 lines
2.4 KiB
Go
89 lines
2.4 KiB
Go
package cmd
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import (
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"fmt"
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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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"os"
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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",
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Short: "Docker Image Visualizer & Explorer",
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Long: `Docker Image Visualizer & Explorer`,
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Args: cobra.ExactArgs(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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os.Exit(1)
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}
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}
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func init() {
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cobra.OnInitialize(initConfig)
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cobra.OnInitialize(initLogging)
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// Here you will define your flags and configuration settings.
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// Cobra supports persistent flags, which, if defined here,
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// will be global for your application.
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rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.dive.yaml)")
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// Cobra also supports local flags, which will only run
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// when this action is called directly.
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rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
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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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os.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.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 loggin object with a formatter and location
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func initLogging() {
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// TODO: clean this up and make more configurable
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var filename string = "dive.log"
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// create the log file if doesn't exist. And append to it if it already exists.
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f, err := os.OpenFile(filename, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0644)
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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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log.SetLevel(log.DebugLevel)
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if err != nil {
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// cannot open log file. Logging to stderr
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fmt.Println(err)
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} else {
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log.SetOutput(f)
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}
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log.Debug("Starting Dive...")
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}
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