add logger

server/services/logger/logger.go

@@ -0,0 +1,57 @@
+package logger
+
+import (
+	"os"
+
+	"github.com/natefinch/lumberjack"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+)
+
+var (
+	log_inst        = NewLogger()
+	log_file_config = zapcore.AddSync(&lumberjack.Logger{
+		Filename:   "services/logger/serverlog.log",
+		MaxSize:    500, // megabytes
+		MaxBackups: 3,
+		MaxAge:     28, //days
+	})
+	json_enc = zapcore.NewJSONEncoder(zapcore.EncoderConfig{
+		TimeKey:     "timestamp",
+		LevelKey:    "level",
+		NameKey:     "logger",
+		EncodeLevel: zapcore.LowercaseLevelEncoder,
+		EncodeTime:  zapcore.ISO8601TimeEncoder,
+	})
+	console_enc = zapcore.NewConsoleEncoder(zapcore.EncoderConfig{
+		TimeKey:       "timestamp",
+		LevelKey:      "level",
+		NameKey:       "logger",
+		CallerKey:     "caller",
+		MessageKey:    "message",
+		StacktraceKey: "error",
+		EncodeLevel:   zapcore.CapitalColorLevelEncoder,
+		EncodeTime:    zapcore.ISO8601TimeEncoder,
+	})
+)
+
+func createLogggerConfig() *zap.Logger {
+	log_level := zap.NewAtomicLevelAt(zap.InfoLevel)
+
+	log_core := zapcore.NewTee(
+		zapcore.NewCore(json_enc, log_file_config, log_level),
+		zapcore.NewCore(console_enc, zapcore.AddSync(os.Stdout), log_level),
+	)
+
+	return zap.New(log_core)
+}
+
+func NewLogger() *zap.Logger {
+	log := createLogggerConfig()
+	defer log.Sync()
+	return log
+}
+
+func GetInstance() *zap.Logger {
+	return log_inst
+}

server/services/logger/serverlog.log

@@ -0,0 +1,6 @@
+{"level":"info","timestamp":"2023-09-22T10:58:35.135+0700","addr":":8080"}
+{"level":"info","timestamp":"2023-09-22T10:58:47.594+0700","user":"pakin tadatanasakul"}
+{"level":"info","timestamp":"2023-09-22T10:59:55.661+0700","user":"pakin tadatanasakul"}
+{"level":"info","timestamp":"2023-09-22T10:59:59.995+0700","user":"pakin tadatanasakul"}
+{"level":"info","timestamp":"2023-09-22T11:00:00.056+0700","user":"pakin tadatanasakul"}
+{"level":"info","timestamp":"2023-09-22T11:00:07.558+0700","user":"pakin tadatanasakul"}