add: zap を導入

cmd/root.go

@@ -19,6 +19,8 @@ import (
 	"emojitool/cmd/get"
 	"fmt"
 	"github.com/fsnotify/fsnotify"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
 	"os"
 
 	"github.com/spf13/cobra"
@@ -39,7 +41,7 @@ This application is a tool to generate the needed files
 to quickly create a Cobra application.`,
 	// Uncomment the following line if your bare application
 	// has an action associated with it:
-	// Run: func(cmd *cobra.Command, args []string) { },
+	//Run: func(cmd *cobra.Command, args []string) {},
 }
 
 // Execute adds all child commands to the root command and sets flags appropriately.
@@ -62,6 +64,9 @@ func init() {
 
 	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.emojitool.yaml)")
 
+	rootCmd.PersistentFlags().Bool("verbose", false, "output debug logs")
+	viper.BindPFlag("verbose", rootCmd.PersistentFlags().Lookup("verbose"))
+
 	rootCmd.PersistentFlags().String("host", "", "misskey server domain")
 	viper.BindPFlag("host", rootCmd.PersistentFlags().Lookup("host"))
 
@@ -100,4 +105,21 @@ func initConfig() {
 	viper.OnConfigChange(func(e fsnotify.Event) {
 		fmt.Println("config file changed: ", e.Name)
 	})
+
+	// loger setup
+	config := zap.NewProductionConfig()
+	encoderConfig := zap.NewProductionEncoderConfig()
+	encoderConfig.TimeKey = "timestamp"
+	encoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
+	config.EncoderConfig = encoderConfig
+
+	if viper.GetBool("verbose") {
+		config.Level = zap.NewAtomicLevelAt(zapcore.DebugLevel)
+	} else {
+		config.Level = zap.NewAtomicLevelAt(zapcore.InfoLevel)
+	}
+
+	logger, _ := config.Build(zap.AddCallerSkip(1))
+	defer logger.Sync()
+	zap.ReplaceGlobals(logger)
 }

go.mod

@@ -19,7 +19,8 @@ require (
 	github.com/spf13/viper v1.18.2 // indirect
 	github.com/subosito/gotenv v1.6.0 // indirect
 	go.uber.org/atomic v1.9.0 // indirect
-	go.uber.org/multierr v1.9.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.uber.org/zap v1.27.0 // indirect
 	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
 	golang.org/x/sys v0.15.0 // indirect
 	golang.org/x/text v0.14.0 // indirect

go.sum

@@ -44,6 +44,10 @@ go.uber.org/atomic v1.9.0 h1:ECmE8Bn/WFTYwEW/bpKD3M8VtR/zQVbavAoalC1PYyE=
 go.uber.org/atomic v1.9.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
 go.uber.org/multierr v1.9.0 h1:7fIwc/ZtS0q++VgcfqFDxSBZVv/Xo49/SYnDFupUwlI=
 go.uber.org/multierr v1.9.0/go.mod h1:X2jQV1h+kxSjClGpnseKVIxpmcjrj7MNnI0bnlfKTVQ=
+go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
+go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
+go.uber.org/zap v1.27.0 h1:aJMhYGrd5QSmlpLMr2MftRKl7t8J8PTZPA732ud/XR8=
+go.uber.org/zap v1.27.0/go.mod h1:GB2qFLM7cTU87MWRP2mPIjqfIDnGu+VIO4V/SdhGo2E=
 golang.org/x/exp v0.0.0-20230905200255-921286631fa9 h1:GoHiUyI/Tp2nVkLI2mCxVkOjsbSXD66ic0XW0js0R9g=
 golang.org/x/exp v0.0.0-20230905200255-921286631fa9/go.mod h1:S2oDrQGGwySpoQPVqRShND87VCbxmc6bL1Yd2oYrm6k=
 golang.org/x/sys v0.15.0 h1:h48lPFYpsTvQJZF4EKyI4aLHaev3CxivZmv7yZig9pc=