Add new stats metric

wrappers/stats_traffic.go

@@ -0,0 +1,67 @@
+package wrappers
+
+import (
+	"net"
+	"time"
+
+	"go.uber.org/zap"
+
+	"github.com/9seconds/mtg/conntypes"
+	"github.com/9seconds/mtg/stats"
+)
+
+type wrapperTrafficStats struct {
+	parent conntypes.StreamReadWriteCloser
+}
+
+func (w *wrapperTrafficStats) Write(p []byte) (int, error) {
+	n, err := w.parent.Write(p)
+	stats.Stats.EgressTraffic(n)
+
+	return n, err
+}
+
+func (w *wrapperTrafficStats) WriteTimeout(p []byte, timeout time.Duration) (int, error) {
+	n, err := w.parent.WriteTimeout(p, timeout)
+	stats.Stats.EgressTraffic(n)
+
+	return n, err
+}
+
+func (w *wrapperTrafficStats) Read(p []byte) (int, error) {
+	n, err := w.parent.Read(p)
+	stats.Stats.IngressTraffic(n)
+
+	return n, err
+}
+
+func (w *wrapperTrafficStats) ReadTimeout(p []byte, timeout time.Duration) (int, error) {
+	n, err := w.parent.ReadTimeout(p, timeout)
+	stats.Stats.IngressTraffic(n)
+
+	return n, err
+}
+
+func (w *wrapperTrafficStats) Conn() net.Conn {
+	return w.parent.Conn()
+}
+
+func (w *wrapperTrafficStats) Logger() *zap.SugaredLogger {
+	return w.parent.Logger().Named("stats-traffic")
+}
+
+func (w *wrapperTrafficStats) LocalAddr() *net.TCPAddr {
+	return w.parent.LocalAddr()
+}
+
+func (w *wrapperTrafficStats) RemoteAddr() *net.TCPAddr {
+	return w.parent.RemoteAddr()
+}
+
+func (w *wrapperTrafficStats) Close() error {
+	return w.parent.Close()
+}
+
+func NewTrafficStats(parent conntypes.StreamReadWriteCloser) conntypes.StreamReadWriteCloser {
+	return &wrapperTrafficStats{parent}
+}