refine tenant api

Signed-off-by: hongming <talonwan@yunify.com>

vendor/gopkg.in/igm/sockjs-go.v2/sockjs/eventsource.go

@@ -0,0 +1,32 @@
+package sockjs
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+)
+
+func (h *handler) eventSource(rw http.ResponseWriter, req *http.Request) {
+	rw.Header().Set("content-type", "text/event-stream; charset=UTF-8")
+	fmt.Fprintf(rw, "\r\n")
+	rw.(http.Flusher).Flush()
+
+	recv := newHTTPReceiver(rw, h.options.ResponseLimit, new(eventSourceFrameWriter))
+	sess, _ := h.sessionByRequest(req)
+	if err := sess.attachReceiver(recv); err != nil {
+		recv.sendFrame(cFrame)
+		recv.close()
+		return
+	}
+
+	select {
+	case <-recv.doneNotify():
+	case <-recv.interruptedNotify():
+	}
+}
+
+type eventSourceFrameWriter struct{}
+
+func (*eventSourceFrameWriter) write(w io.Writer, frame string) (int, error) {
+	return fmt.Fprintf(w, "data: %s\r\n\r\n", frame)
+}