uniform logging

xlog/xlog.go

@@ -0,0 +1,72 @@
+package xlog
+
+import (
+	"context"
+	"log/slog"
+	"os"
+	"runtime"
+)
+
+var logger *slog.Logger
+
+func init() {
+	var level = slog.LevelDebug
+
+	switch os.Getenv("LOG_LEVEL") {
+	case "info":
+		level = slog.LevelInfo
+	case "warn":
+		level = slog.LevelWarn
+	case "error":
+		level = slog.LevelError
+	case "debug":
+		level = slog.LevelDebug
+	}
+
+	var opts = &slog.HandlerOptions{
+		Level: level,
+	}
+
+	var handler slog.Handler
+
+	if os.Getenv("LOG_FORMAT") == "json" {
+		handler = slog.NewJSONHandler(os.Stdout, opts)
+	} else {
+		handler = slog.NewTextHandler(os.Stdout, opts)
+	}
+	logger = slog.New(handler)
+}
+
+func _log(level slog.Level, msg string, args ...any) {
+	_, f, l, _ := runtime.Caller(2)
+	group := slog.Group(
+		"source",
+		slog.Attr{
+			Key:   "file",
+			Value: slog.AnyValue(f),
+		},
+		slog.Attr{
+			Key:   "L",
+			Value: slog.AnyValue(l),
+		},
+	)
+	args = append(args, group)
+	logger.Log(context.Background(), level, msg, args...)
+}
+
+func Info(msg string, args ...any) {
+	_log(slog.LevelInfo, msg, args...)
+}
+
+func Debug(msg string, args ...any) {
+	_log(slog.LevelDebug, msg, args...)
+	logger.Debug(msg, args...)
+}
+
+func Error(msg string, args ...any) {
+	_log(slog.LevelError, msg, args...)
+}
+
+func Warn(msg string, args ...any) {
+	_log(slog.LevelWarn, msg, args...)
+}