Squashed 'livekit-server/' content from commit 154b4d26

git-subtree-dir: livekit-server
git-subtree-split: 154b4d26b769c68a03c096124094b97bf61a996f

pkg/telemetry/statsconn.go

@@ -0,0 +1,130 @@
+// Copyright 2023 LiveKit, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package telemetry
+
+import (
+	"net"
+
+	"github.com/pion/turn/v4"
+
+	"github.com/livekit/livekit-server/pkg/telemetry/prometheus"
+)
+
+type Listener struct {
+	net.Listener
+}
+
+func NewListener(l net.Listener) *Listener {
+	return &Listener{Listener: l}
+}
+
+func (l *Listener) Accept() (net.Conn, error) {
+	conn, err := l.Listener.Accept()
+	if err != nil {
+		return nil, err
+	}
+
+	return NewConn(conn, prometheus.Incoming), nil
+}
+
+type Conn struct {
+	net.Conn
+	direction prometheus.Direction
+}
+
+func NewConn(c net.Conn, direction prometheus.Direction) *Conn {
+	prometheus.AddConnection(direction)
+	return &Conn{Conn: c, direction: direction}
+}
+
+func (c *Conn) Read(b []byte) (n int, err error) {
+	n, err = c.Conn.Read(b)
+	if n > 0 {
+		prometheus.IncrementBytes(prometheus.Incoming, uint64(n), false)
+	}
+	return
+}
+
+func (c *Conn) Write(b []byte) (n int, err error) {
+	n, err = c.Conn.Write(b)
+	if n > 0 {
+		prometheus.IncrementBytes(prometheus.Outgoing, uint64(n), false)
+	}
+	return
+}
+
+func (c *Conn) Close() error {
+	prometheus.SubConnection(c.direction)
+	return c.Conn.Close()
+}
+
+type PacketConn struct {
+	net.PacketConn
+	direction prometheus.Direction
+}
+
+func NewPacketConn(c net.PacketConn, direction prometheus.Direction) *PacketConn {
+	prometheus.AddConnection(direction)
+	return &PacketConn{PacketConn: c, direction: direction}
+}
+
+func (c *PacketConn) ReadFrom(p []byte) (n int, addr net.Addr, err error) {
+	n, addr, err = c.PacketConn.ReadFrom(p)
+	if n > 0 {
+		prometheus.IncrementBytes(prometheus.Incoming, uint64(n), false)
+		prometheus.IncrementPackets(prometheus.Incoming, 1, false)
+	}
+	return
+}
+
+func (c *PacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
+	n, err = c.PacketConn.WriteTo(p, addr)
+	if n > 0 {
+		prometheus.IncrementBytes(prometheus.Outgoing, uint64(n), false)
+		prometheus.IncrementPackets(prometheus.Outgoing, 1, false)
+	}
+	return
+}
+
+func (c *PacketConn) Close() error {
+	prometheus.SubConnection(c.direction)
+	return c.PacketConn.Close()
+}
+
+type RelayAddressGenerator struct {
+	turn.RelayAddressGenerator
+}
+
+func NewRelayAddressGenerator(g turn.RelayAddressGenerator) *RelayAddressGenerator {
+	return &RelayAddressGenerator{RelayAddressGenerator: g}
+}
+
+func (g *RelayAddressGenerator) AllocatePacketConn(network string, requestedPort int) (net.PacketConn, net.Addr, error) {
+	conn, addr, err := g.RelayAddressGenerator.AllocatePacketConn(network, requestedPort)
+	if err != nil {
+		return nil, addr, err
+	}
+
+	return NewPacketConn(conn, prometheus.Outgoing), addr, err
+}
+
+func (g *RelayAddressGenerator) AllocateConn(network string, requestedPort int) (net.Conn, net.Addr, error) {
+	conn, addr, err := g.RelayAddressGenerator.AllocateConn(network, requestedPort)
+	if err != nil {
+		return nil, addr, err
+	}
+
+	return NewConn(conn, prometheus.Outgoing), addr, err
+}