Add go sdk

httpmetrics/model.go

@@ -0,0 +1,34 @@
+package httpmetrics
+
+import "net/http"
+
+type StatusRecorder struct {
+	http.ResponseWriter
+	Status int
+	Size   int64
+}
+
+func (s *StatusRecorder) WriteHeader(code int) {
+	s.Status = code
+	s.ResponseWriter.WriteHeader(code)
+}
+
+func (s *StatusRecorder) Write(b []byte) (int, error) {
+	n, err := s.ResponseWriter.Write(b)
+	s.Size += int64(n)
+	return n, err
+}
+
+type RequestMetrics struct {
+	RequestsPerSecond float64
+	StatusCodes       map[string]int64
+	Durations         Stats
+	RequestSizes      Stats
+	ResponseSizes     Stats
+}
+
+type Stats struct {
+	Min int64
+	Max int64
+	Avg float64
+}