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b3e8bf7d12
Closes #23 If the name is "" or "UTC", LoadLocation returns UTC. If the name is "Local", LoadLocation returns Local. Otherwise, the name is taken to be a location name corresponding to a file in the IANA Time Zone database, such as "America/New_York". LoadLocation looks for the IANA Time Zone database in the following locations in order: the directory or uncompressed zip file named by the ZONEINFO environment variable on a Unix system, the system standard installation location $GOROOT/lib/time/zoneinfo.zip the time/tzdata package, if it was imported
122 lines
2.5 KiB
Go
122 lines
2.5 KiB
Go
package logger
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import (
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"fmt"
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"log"
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"os"
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"sync"
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"time"
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)
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// Logger struct holds the logger instance
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type Logger struct {
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logger *log.Logger
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level LogLevel
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}
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var (
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defaultLogger *Logger
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once sync.Once
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)
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// NewLogger creates a new logger instance
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func NewLogger() *Logger {
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return &Logger{
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logger: log.New(os.Stdout, "", 0),
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level: DEBUG,
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}
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}
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// Init initializes the default logger
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func Init() *Logger {
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once.Do(func() {
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defaultLogger = NewLogger()
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})
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return defaultLogger
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}
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// GetLogger returns the default logger instance
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func GetLogger() *Logger {
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if defaultLogger == nil {
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Init()
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}
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return defaultLogger
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}
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// SetLevel sets the minimum logging level
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func (l *Logger) SetLevel(level LogLevel) {
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l.level = level
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}
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// log handles the actual logging
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func (l *Logger) log(level LogLevel, format string, args ...interface{}) {
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if level < l.level {
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return
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}
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// Get timezone from environment variable or use local timezone
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timezone := os.Getenv("LOGGER_TIMEZONE")
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var location *time.Location
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var err error
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if timezone != "" {
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location, err = time.LoadLocation(timezone)
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if err != nil {
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// If invalid timezone, fall back to local
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location = time.Local
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}
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} else {
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location = time.Local
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}
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timestamp := time.Now().In(location).Format("2006/01/02 15:04:05")
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message := fmt.Sprintf(format, args...)
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l.logger.Printf("%s: %s %s", level.String(), timestamp, message)
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}
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// Debug logs debug level messages
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func (l *Logger) Debug(format string, args ...interface{}) {
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l.log(DEBUG, format, args...)
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}
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// Info logs info level messages
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func (l *Logger) Info(format string, args ...interface{}) {
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l.log(INFO, format, args...)
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}
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// Warn logs warning level messages
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func (l *Logger) Warn(format string, args ...interface{}) {
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l.log(WARN, format, args...)
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}
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// Error logs error level messages
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func (l *Logger) Error(format string, args ...interface{}) {
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l.log(ERROR, format, args...)
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}
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// Fatal logs fatal level messages and exits
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func (l *Logger) Fatal(format string, args ...interface{}) {
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l.log(FATAL, format, args...)
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os.Exit(1)
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}
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// Global helper functions
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func Debug(format string, args ...interface{}) {
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GetLogger().Debug(format, args...)
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}
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func Info(format string, args ...interface{}) {
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GetLogger().Info(format, args...)
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}
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func Warn(format string, args ...interface{}) {
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GetLogger().Warn(format, args...)
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}
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func Error(format string, args ...interface{}) {
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GetLogger().Error(format, args...)
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}
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func Fatal(format string, args ...interface{}) {
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GetLogger().Fatal(format, args...)
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}
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