add status code in S3RequestCounter

weed/s3api/stats.go

@@ -4,18 +4,35 @@ import (
 	stats_collect "github.com/chrislusf/seaweedfs/weed/stats"
 	"github.com/chrislusf/seaweedfs/weed/util"
 	"net/http"
+	"strconv"
 	"time"
 )
 
+type StatusRecorder struct {
+	http.ResponseWriter
+	Status int
+}
+
+func NewStatusResponseWriter(w http.ResponseWriter) *StatusRecorder {
+	return &StatusRecorder{w, http.StatusOK}
+}
+
+func (r *StatusRecorder) WriteHeader(status int) {
+	r.Status = status
+	r.ResponseWriter.WriteHeader(status)
+}
+
+func (r *StatusRecorder) Flush() {
+	r.ResponseWriter.(http.Flusher).Flush()
+}
+
 func track(f http.HandlerFunc, action string) http.HandlerFunc {
-
 	return func(w http.ResponseWriter, r *http.Request) {
-
 		w.Header().Set("Server", "SeaweedFS S3 "+util.VERSION)
-
+		recorder := NewStatusResponseWriter(w)
 		start := time.Now()
-		stats_collect.S3RequestCounter.WithLabelValues(action).Inc()
+		f(recorder, r)
-		f(w, r)
 		stats_collect.S3RequestHistogram.WithLabelValues(action).Observe(time.Since(start).Seconds())
+		stats_collect.S3RequestCounter.WithLabelValues(action, strconv.Itoa(recorder.Status)).Inc()
 	}
 }

weed/stats/metrics.go

@@ -16,7 +16,7 @@ import (
 )
 
 var (
-	Gather        = prometheus.NewRegistry()
+	Gather = prometheus.NewRegistry()
 
 	FilerRequestCounter = prometheus.NewCounterVec(
 		prometheus.CounterOpts{
@@ -99,7 +99,7 @@ var (
 			Subsystem: "s3",
 			Name:      "request_total",
 			Help:      "Counter of s3 requests.",
-		}, []string{"type"})
+		}, []string{"type", "code"})
 	S3RequestHistogram = prometheus.NewHistogramVec(
 		prometheus.HistogramOpts{
 			Namespace: "SeaweedFS",