Add init subcommand

cmd/root.go

@@ -14,7 +14,7 @@ import (
 )
 
 const (
-	gVersion = "0.42a"
+	gVersion = "0.42b"
 	
 	// TODO : Get from $jail_zpool/defaults.json
 	MIN_DYN_DEVFS_RULESET = 1000
@@ -59,6 +59,9 @@ var (
 
 	gTimeZone     string
 	gSnapshotName string
+	gZPool        string
+	gBridge       string
+	gInterface    string
 
 	gMigrateDestDatastore string
 	gYesToAll             bool
@@ -99,20 +102,14 @@ It support iocage jails and can coexist with iocage.`,
 			fmt.Printf("GoCage v.%s on FreeBSD %d.%d-%s\n", gVersion, fv.major, fv.minor, fv.flavor)
 		},
 	}
-	
+
-	/* TODO
-	Initialize datastore(s) /iocage, /iocage/jails
-	Put defaults.json, update it with hostid,interfaces, and maybe other necessary fields
-	Initialize bridge
 	initCmd = &cobra.Command{
 		Use:   "init",
 		Short: "Initialize GoCage",
-		//Long:  `Let this show you how much fail I had to get this *cough* perfect`,
 		Run: func(cmd *cobra.Command, args []string) {
-			fv, _ := getFreeBSDVersion()
+			InitGoCage(args)
-			fmt.Printf("GoCage v.%s on FreeBSD %d.%d-%s\n", gVersion, fv.major, fv.minor, fv.flavor)
 		},
-	}*/
+	}
 
 	listCmd = &cobra.Command{
 		Use:   "list",
@@ -395,6 +392,10 @@ func init() {
 	rootCmd.PersistentFlags().BoolVar(&gDebug, "debug", false, "Debug mode")
 
 	// Command dependant switches
+	initCmd.Flags().StringVarP(&gZPool, "pool", "p", "", "ZFS pool to create datastore on")
+	initCmd.Flags().StringVarP(&gBridge, "bridge", "b", "", "bridge to create for jails networking")
+	initCmd.Flags().StringVarP(&gInterface, "interface", "i", "", "interface to add as bridge member. This should be your main interface")
+	initCmd.MarkFlagsRequiredTogether("bridge", "interface")
 
 	// We reuse these flags in "gocage snapshot list myjail" and 'gocage datastore list" commands
 	listCmd.Flags().StringVarP(&gDisplayJColumns, "outcol", "o", "JID,Name,Config.Release,Config.Ip4_addr,Running", "Show these columns in output")
@@ -443,6 +444,7 @@ func init() {
 	apiCmd.Flags().IntVarP(&gApiPort, "listen-port", "p", 1234, "API listening port")
 
 	// Now declare commands
+	rootCmd.AddCommand(initCmd)
 	rootCmd.AddCommand(versionCmd)
 	rootCmd.AddCommand(listCmd)
 	listCmd.AddCommand(listPropsCmd)
@@ -461,7 +463,6 @@ func init() {
 	rootCmd.AddCommand(upgradeCmd)
 	rootCmd.AddCommand(createCmd)
 	rootCmd.AddCommand(apiCmd)
-	
 	rootCmd.AddCommand(testCmd)
 	
 	snapshotCmd.AddCommand(snapshotListCmd)
@@ -491,17 +492,6 @@ func initConfig() {
 		fmt.Printf("ERROR reading config file %s : %s\n", gConfigFile, err.Error())
 		os.Exit(1)
 	}
-	
-	// Load default configs from datastores
-	err := ListDatastores(viper.GetStringSlice("datastore"), false)
-	if err != nil {
-		fmt.Printf("ERROR: error checking datastores: %v\n", err)
-		os.Exit(1)
-	}
-
-	//	fmt.Println("Using config file:", viper.ConfigFileUsed())
-	//	fmt.Printf("datastore in config : %s\n", viper.GetStringSlice("datastore"))
-	//	fmt.Printf("datastore.0 in config : %s\n", viper.GetStringSlice("datastore.0"))
 
 	// Command line flags have priority on config file
 	if rootCmd.Flags().Lookup("sudo") != nil && false == rootCmd.Flags().Lookup("sudo").Changed {
@@ -535,12 +525,26 @@ func initConfig() {
 		fmt.Printf("More than 3 sort criteria is not supported!\n")
 		os.Exit(1)
 	}
-	
+
-	
 	if gDebug {
 		log.SetLevel(log.DebugLevel)
 		log.Debugf("Debug mode enabled\n")
 	}
+
+	// no need to check prerequesites if we are initializing gocage
+	for _, rc := range rootCmd.Commands() {
+		//fmt.Printf("DEBUG: rootCmd subcommand: %v. Was it called? %s\n", rc.Use, rootCmd.Commands()[i].CalledAs())
+		if len(rc.CalledAs()) > 0 && strings.EqualFold("init", rc.CalledAs()) {
+			return
+		}
+	}
+
+	// Load default configs from datastores
+	err := ListDatastores(viper.GetStringSlice("datastore"), false)
+	if err != nil {
+		fmt.Printf("ERROR: error checking datastores: %v\n", err)
+		os.Exit(1)
+	}
 }