initialize logging

cmd/create.go

@@ -22,7 +22,7 @@ THE SOFTWARE.
 package cmd
 
 import (
-	"fmt"
+	log "github.com/sirupsen/logrus"
 
 	"github.com/spf13/cobra"
 )
@@ -30,15 +30,10 @@ import (
 // createCmd represents the create command
 var createCmd = &cobra.Command{
 	Use:   "create",
-	Short: "A brief description of your command",
-	Long: `A longer description that spans multiple lines and likely contains examples
-and usage of using your command. For example:
-
-Cobra is a CLI library for Go that empowers applications.
-This application is a tool to generate the needed files
-to quickly create a Cobra application.`,
+	Short: "Create a resource.",
+	Long:  `Create a resource.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Println("create called")
+		log.Debugln("create called")
 	},
 }
 

cmd/delete.go

@@ -22,7 +22,7 @@ THE SOFTWARE.
 package cmd
 
 import (
-	"fmt"
+	log "github.com/sirupsen/logrus"
 
 	"github.com/spf13/cobra"
 )
@@ -38,7 +38,7 @@ Cobra is a CLI library for Go that empowers applications.
 This application is a tool to generate the needed files
 to quickly create a Cobra application.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Println("delete called")
+		log.Debugln("delete called")
 	},
 }
 

cmd/get.go

@@ -22,7 +22,7 @@ THE SOFTWARE.
 package cmd
 
 import (
-	"fmt"
+	log "github.com/sirupsen/logrus"
 
 	"github.com/spf13/cobra"
 )
@@ -38,7 +38,7 @@ Cobra is a CLI library for Go that empowers applications.
 This application is a tool to generate the needed files
 to quickly create a Cobra application.`,
 	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Println("get called")
+		log.Debugln("get called")
 	},
 }
 

cmd/root.go

@@ -22,8 +22,10 @@ THE SOFTWARE.
 package cmd
 
 import (
-	"github.com/spf13/cobra"
 	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
 
 	homedir "github.com/mitchellh/go-homedir"
 	"github.com/spf13/viper"
@@ -32,6 +34,7 @@ import (
 )
 
 var cfgFile string
+var debugLogging bool
 
 // rootCmd represents the base command when called without any subcommands
 var rootCmd = &cobra.Command{
@@ -53,16 +56,18 @@ func Execute() {
 
 func init() {
 	cobra.OnInitialize(initConfig)
+	cobra.OnInitialize(initLogging)
 
 	// Here you will define your flags and configuration settings.
 	// Cobra supports persistent flags, which, if defined here,
 	// will be global for your application.
 
 	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.k3d.yaml)")
+	rootCmd.PersistentFlags().BoolVar(&debugLogging, "verbose", false, "Enable verbose output (debug logging)")
 
 	// Cobra also supports local flags, which will only run
 	// when this action is called directly.
-	rootCmd.Flags().BoolP("verbose", "v", false, "Enable verbose output (debug level logs)")
+	// rootCmd.Flags().BoolP("nope", "n", false, "nope description")
 }
 
 // initConfig reads in config file and ENV variables if set.
@@ -90,3 +95,19 @@ func initConfig() {
 		log.Debugln("Using config file:", viper.ConfigFileUsed())
 	}
 }
+
+// initLogging initializes the logger
+func initLogging() {
+	if debugLogging {
+		log.SetLevel(log.DebugLevel)
+	} else {
+		switch logLevel := strings.ToUpper(os.Getenv("LOG_LEVEL")); logLevel {
+		case "DEBUG":
+			log.SetLevel(log.DebugLevel)
+		case "WARN":
+			log.SetLevel(log.WarnLevel)
+		default:
+			log.SetLevel(log.InfoLevel)
+		}
+	}
+}