Dynamic Configuration Refactoring

old/middlewares/compress.go

@@ -0,0 +1,33 @@
+package middlewares
+
+import (
+	"compress/gzip"
+	"net/http"
+	"strings"
+
+	"github.com/NYTimes/gziphandler"
+	"github.com/containous/traefik/old/log"
+)
+
+// Compress is a middleware that allows to compress the response
+type Compress struct{}
+
+// ServeHTTP is a function used by Negroni
+func (c *Compress) ServeHTTP(rw http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
+	contentType := r.Header.Get("Content-Type")
+	if strings.HasPrefix(contentType, "application/grpc") {
+		next.ServeHTTP(rw, r)
+	} else {
+		gzipHandler(next).ServeHTTP(rw, r)
+	}
+}
+
+func gzipHandler(h http.Handler) http.Handler {
+	wrapper, err := gziphandler.GzipHandlerWithOpts(
+		gziphandler.CompressionLevel(gzip.DefaultCompression),
+		gziphandler.MinSize(gziphandler.DefaultMinSize))
+	if err != nil {
+		log.Error(err)
+	}
+	return wrapper(h)
+}