closes #6

src/rbmd/http.go

@@ -133,6 +133,20 @@ func (s ServerConf) ServeHTTP(z ZooNode, fqdn string) {
 		w.Write(state)
 	})
 
+	// Get metrics
+	http.HandleFunc("/metrics", func(w http.ResponseWriter, r *http.Request) {
+		m, err := GetMetrics(z)
+		if err != nil {
+			w.WriteHeader(500)
+			return
+		}
+		metrics, err := json.MarshalIndent(m, "", "  ")
+		if err != nil {
+			log.Fatal(err)
+		}
+		w.Write(metrics)
+	})
+
 	wr := wrr{
 		fqdn,
 		z,

src/rbmd/metrics.go

@@ -0,0 +1,48 @@
+package rbmd
+
+import (
+	"encoding/json"
+	"runtime"
+	"strings"
+)
+
+//Metrics metrics statistic
+type Metrics struct {
+	Goroutines  int   `json:"goroutines"`
+	Nodes       int   `json:"nodes"`
+	MountsTotal int   `json:"mountstotal"`
+	Cgocall     int64 `json:"cgocall"`
+}
+
+// GetMetrics ...
+func GetMetrics(z ZooNode) (Metrics, error) {
+	var q Quorum
+	var m Metrics
+
+	curQuorum, _, err := z.Conn.Get(strings.Join([]string{z.Path, "log", "quorum"}, "/"))
+	if err != nil {
+		return m, err
+	}
+
+	err = json.Unmarshal(curQuorum, &q)
+	if err != nil {
+		return m, err
+	}
+
+	m.Nodes = len(q.Quorum)
+	m.Goroutines = runtime.NumGoroutine()
+	m.Cgocall = runtime.NumCgoCall()
+	m.MountsTotal = GetTotalMounts(q.Quorum)
+
+	return m, nil
+}
+
+// GetTotalMounts ...
+func GetTotalMounts(n []Node) int {
+	mounts := 0
+	for _, node := range n {
+		mounts = mounts + len(node.Mounts)
+	}
+
+	return mounts
+}