Beyhan Ogur
74 lines
1.5 KiB
Go
74 lines
1.5 KiB
Go
package logger
|
|
|
|
import (
|
|
"fmt"
|
|
"log"
|
|
"strings"
|
|
)
|
|
|
|
// Level represents the logging verbosity level.
|
|
type Level int
|
|
|
|
const (
|
|
LevelDebug Level = iota
|
|
LevelInfo
|
|
LevelWarn
|
|
)
|
|
|
|
var currentLevel = LevelInfo
|
|
|
|
// SetLevel sets the global log level from a string: "debug", "info", or "warn".
|
|
func SetLevel(s string) {
|
|
switch strings.ToLower(s) {
|
|
case "debug":
|
|
currentLevel = LevelDebug
|
|
case "info":
|
|
currentLevel = LevelInfo
|
|
case "warn":
|
|
currentLevel = LevelWarn
|
|
default:
|
|
currentLevel = LevelInfo
|
|
}
|
|
}
|
|
|
|
// Debug logs a message only when LOG_LEVEL=debug.
|
|
func Debug(format string, args ...interface{}) {
|
|
if currentLevel <= LevelDebug {
|
|
log.Printf(format, args...)
|
|
}
|
|
}
|
|
|
|
// Info logs a message when LOG_LEVEL is debug or info.
|
|
func Info(format string, args ...interface{}) {
|
|
if currentLevel <= LevelInfo {
|
|
log.Printf(format, args...)
|
|
}
|
|
}
|
|
|
|
// Warn logs a message at any log level (always visible).
|
|
func Warn(format string, args ...interface{}) {
|
|
if currentLevel <= LevelWarn {
|
|
log.Printf(format, args...)
|
|
}
|
|
}
|
|
|
|
// Fatal logs and exits. Always visible regardless of level.
|
|
func Fatal(format string, args ...interface{}) {
|
|
log.Fatalf(format, args...)
|
|
}
|
|
|
|
// formatKV formats key=value pairs for structured console output.
|
|
func formatKV(pairs ...interface{}) string {
|
|
if len(pairs)%2 != 0 {
|
|
return fmt.Sprint(pairs...)
|
|
}
|
|
var b strings.Builder
|
|
for i := 0; i < len(pairs); i += 2 {
|
|
if i > 0 {
|
|
b.WriteString(" | ")
|
|
}
|
|
b.WriteString(fmt.Sprintf("%v=%v", pairs[i], pairs[i+1]))
|
|
}
|
|
return b.String()
|
|
}
|