41 lines
837 B
Go
41 lines
837 B
Go
package middlewares
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import (
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"log"
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"net/http"
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"os"
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"github.com/gorilla/handlers"
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)
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// Logger is a middleware handler that logs the request as it goes in and the response as it goes out.
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type Logger struct {
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file *os.File
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}
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// NewLogger returns a new Logger instance.
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func NewLogger(file string) *Logger {
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if len(file) > 0 {
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fi, err := os.OpenFile(file, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
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if err != nil {
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log.Fatal("Error opening file", err)
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}
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return &Logger{fi}
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}
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return &Logger{nil}
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}
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func (l *Logger) ServeHTTP(rw http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
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if l.file == nil {
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next(rw, r)
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} else {
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handlers.CombinedLoggingHandler(l.file, next).ServeHTTP(rw, r)
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}
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}
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// Close closes the logger (i.e. the file).
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func (l *Logger) Close() {
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if l.file != nil {
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l.file.Close()
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}
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}
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