Negroni middlewares

middlewares/logger.go

@@ -0,0 +1,37 @@
+/*
+Copyright
+*/
+package middlewares
+
+import (
+	"log"
+	"net/http"
+	"os"
+	"github.com/gorilla/handlers"
+)
+
+// Logger is a middleware handler that logs the request as it goes in and the response as it goes out.
+type Logger struct {
+	file *os.File
+}
+
+// NewLogger returns a new Logger instance
+func NewLogger(file string) *Logger {
+	if (len(file) > 0 ) {
+		fi, err := os.OpenFile(file, os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
+		if err != nil {
+			log.Fatal("Error opening file", err)
+		}
+		return &Logger{fi}
+	}else {
+		return &Logger{nil}
+	}
+}
+
+func (l *Logger) ServeHTTP(rw http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
+	if(l.file == nil){
+		next(rw, r)
+	}else{
+		handlers.CombinedLoggingHandler(l.file, next).ServeHTTP(rw, r)
+	}
+}