67 lines
1.4 KiB
Go
67 lines
1.4 KiB
Go
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package logger
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import (
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"log"
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"os"
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)
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// FileLogger is a utility to log messages to a number of destinations
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type FileLogger struct {
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filename string
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}
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// NewFileLogger creates a new Logger.
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func NewFileLogger(filename string) Logger {
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return &FileLogger{
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filename: filename,
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}
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}
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// Print works like Sprintf.
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func (l *FileLogger) Print(message string) {
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f, err := os.OpenFile(l.filename, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0o644)
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if err != nil {
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log.Fatal(err)
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}
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if _, err := f.WriteString(message); err != nil {
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f.Close()
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log.Fatal(err)
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}
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f.Close()
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}
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func (l *FileLogger) Println(message string) {
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l.Print(message + "\n")
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}
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// Trace level logging. Works like Sprintf.
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func (l *FileLogger) Trace(message string) {
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l.Println("TRACE | " + message)
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}
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// Debug level logging. Works like Sprintf.
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func (l *FileLogger) Debug(message string) {
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l.Println("DEBUG | " + message)
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}
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// Info level logging. Works like Sprintf.
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func (l *FileLogger) Info(message string) {
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l.Println("INFO | " + message)
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}
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// Warning level logging. Works like Sprintf.
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func (l *FileLogger) Warning(message string) {
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l.Println("WARN | " + message)
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}
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// Error level logging. Works like Sprintf.
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func (l *FileLogger) Error(message string) {
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l.Println("ERROR | " + message)
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}
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// Fatal level logging. Works like Sprintf.
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func (l *FileLogger) Fatal(message string) {
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l.Println("FATAL | " + message)
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os.Exit(1)
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}
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