Fix the build (move out of internal)

socketserver/server/stats.go

@@ -0,0 +1,48 @@
+package server
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+)
+
+type StatsData struct {
+	ClientConnectsTotal      int64
+	ClientDisconnectsTotal   int64
+	FirstNotHelloDisconnects int64
+
+	DisconnectCodes   map[string]int64
+	DisconnectReasons map[string]int64
+
+	CommandsIssuedTotal int64
+	CommandsIssuedMap   map[Command]int64
+
+	MessagesSent int64
+
+	Version int
+}
+
+const StatsDataVersion = 1
+
+func newStatsData() *StatsData {
+	return &StatsData{
+		CommandsIssuedMap: make(map[Command]int64),
+		DisconnectCodes:   make(map[string]int64),
+		DisconnectReasons: make(map[string]int64),
+		Version:           StatsDataVersion,
+	}
+}
+
+// Statistics is several variables that get incremented during normal operation of the server.
+// Its structure should be versioned as it is exposed via JSON.
+var Statistics = newStatsData()
+
+func HTTPShowStatistics(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+
+	jsonBytes, _ := json.Marshal(Statistics)
+	outBuf := bytes.NewBuffer(nil)
+	json.Indent(outBuf, jsonBytes, "", "\t")
+
+	outBuf.WriteTo(w)
+}