add rate limiter
This commit is contained in:
ginuerzh
@ -1,305 +0,0 @@
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package wrapper
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import (
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"errors"
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"io"
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"net"
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"syscall"
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"github.com/go-gost/core/metrics"
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)
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var (
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errUnsupport = errors.New("unsupported operation")
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)
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// serverConn is a server side Conn with metrics supported.
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type serverConn struct {
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net.Conn
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service string
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}
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func WrapConn(service string, c net.Conn) net.Conn {
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if !metrics.IsEnabled() {
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return c
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}
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return &serverConn{
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service: service,
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Conn: c,
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}
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}
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func (c *serverConn) Read(b []byte) (n int, err error) {
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n, err = c.Conn.Read(b)
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if counter := metrics.GetCounter(
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metrics.MetricServiceTransferInputBytesCounter,
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metrics.Labels{
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"service": c.service,
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}); counter != nil {
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counter.Add(float64(n))
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}
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return
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}
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func (c *serverConn) Write(b []byte) (n int, err error) {
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n, err = c.Conn.Write(b)
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if counter := metrics.GetCounter(
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metrics.MetricServiceTransferOutputBytesCounter,
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metrics.Labels{
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"service": c.service,
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}); counter != nil {
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counter.Add(float64(n))
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}
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return
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}
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func (c *serverConn) SyscallConn() (rc syscall.RawConn, err error) {
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if sc, ok := c.Conn.(syscall.Conn); ok {
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rc, err = sc.SyscallConn()
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return
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}
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err = errUnsupport
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return
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}
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type packetConn struct {
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net.PacketConn
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service string
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}
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func WrapPacketConn(service string, pc net.PacketConn) net.PacketConn {
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if !metrics.IsEnabled() {
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return pc
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}
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return &packetConn{
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PacketConn: pc,
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service: service,
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}
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}
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func (c *packetConn) ReadFrom(p []byte) (n int, addr net.Addr, err error) {
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n, addr, err = c.PacketConn.ReadFrom(p)
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if counter := metrics.GetCounter(
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metrics.MetricServiceTransferInputBytesCounter,
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metrics.Labels{
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"service": c.service,
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}); counter != nil {
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counter.Add(float64(n))
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}
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return
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}
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func (c *packetConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
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n, err = c.PacketConn.WriteTo(p, addr)
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if counter := metrics.GetCounter(
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metrics.MetricServiceTransferOutputBytesCounter,
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metrics.Labels{
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"service": c.service,
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}); counter != nil {
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counter.Add(float64(n))
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}
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return
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}
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type udpConn struct {
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net.PacketConn
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service string
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}
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func WrapUDPConn(service string, pc net.PacketConn) UDPConn {
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return &udpConn{
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PacketConn: pc,
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service: service,
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}
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}
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func (c *udpConn) RemoteAddr() net.Addr {
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if nc, ok := c.PacketConn.(remoteAddr); ok {
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return nc.RemoteAddr()
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}
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return nil
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}
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func (c *udpConn) SetReadBuffer(n int) error {
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if nc, ok := c.PacketConn.(setBuffer); ok {
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return nc.SetReadBuffer(n)
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}
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return errUnsupport
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}
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func (c *udpConn) SetWriteBuffer(n int) error {
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if nc, ok := c.PacketConn.(setBuffer); ok {
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return nc.SetWriteBuffer(n)
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}
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return errUnsupport
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}
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func (c *udpConn) Read(b []byte) (n int, err error) {
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if nc, ok := c.PacketConn.(io.Reader); ok {
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n, err = nc.Read(b)
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if counter := metrics.GetCounter(
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metrics.MetricServiceTransferInputBytesCounter,
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metrics.Labels{
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"service": c.service,
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}); counter != nil {
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counter.Add(float64(n))
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}
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return
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}
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err = errUnsupport
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return
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}
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func (c *udpConn) ReadFrom(p []byte) (n int, addr net.Addr, err error) {
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n, addr, err = c.PacketConn.ReadFrom(p)
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if counter := metrics.GetCounter(
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metrics.MetricServiceTransferInputBytesCounter,
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metrics.Labels{
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"service": c.service,
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}); counter != nil {
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counter.Add(float64(n))
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}
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return
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}
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func (c *udpConn) ReadFromUDP(b []byte) (n int, addr *net.UDPAddr, err error) {
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if nc, ok := c.PacketConn.(readUDP); ok {
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n, addr, err = nc.ReadFromUDP(b)
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if counter := metrics.GetCounter(
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metrics.MetricServiceTransferInputBytesCounter,
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metrics.Labels{
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"service": c.service,
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}); counter != nil {
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counter.Add(float64(n))
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}
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return
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}
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err = errUnsupport
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return
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}
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func (c *udpConn) ReadMsgUDP(b, oob []byte) (n, oobn, flags int, addr *net.UDPAddr, err error) {
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if nc, ok := c.PacketConn.(readUDP); ok {
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n, oobn, flags, addr, err = nc.ReadMsgUDP(b, oob)
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if counter := metrics.GetCounter(
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metrics.MetricServiceTransferInputBytesCounter,
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metrics.Labels{
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"service": c.service,
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}); counter != nil {
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counter.Add(float64(n))
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}
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return
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}
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err = errUnsupport
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return
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}
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func (c *udpConn) Write(b []byte) (n int, err error) {
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if nc, ok := c.PacketConn.(io.Writer); ok {
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n, err = nc.Write(b)
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if counter := metrics.GetCounter(
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metrics.MetricServiceTransferOutputBytesCounter,
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metrics.Labels{
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"service": c.service,
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}); counter != nil {
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counter.Add(float64(n))
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}
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return
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}
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err = errUnsupport
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return
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}
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func (c *udpConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
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n, err = c.PacketConn.WriteTo(p, addr)
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if counter := metrics.GetCounter(
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metrics.MetricServiceTransferOutputBytesCounter,
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metrics.Labels{
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"service": c.service,
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}); counter != nil {
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counter.Add(float64(n))
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}
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return
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}
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func (c *udpConn) WriteToUDP(b []byte, addr *net.UDPAddr) (n int, err error) {
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if nc, ok := c.PacketConn.(writeUDP); ok {
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n, err = nc.WriteToUDP(b, addr)
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if counter := metrics.GetCounter(
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metrics.MetricServiceTransferOutputBytesCounter,
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metrics.Labels{
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"service": c.service,
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}); counter != nil {
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counter.Add(float64(n))
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}
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return
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}
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err = errUnsupport
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return
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}
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func (c *udpConn) WriteMsgUDP(b, oob []byte, addr *net.UDPAddr) (n, oobn int, err error) {
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if nc, ok := c.PacketConn.(writeUDP); ok {
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n, oobn, err = nc.WriteMsgUDP(b, oob, addr)
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if counter := metrics.GetCounter(
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metrics.MetricServiceTransferOutputBytesCounter,
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metrics.Labels{
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"service": c.service,
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}); counter != nil {
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counter.Add(float64(n))
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}
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return
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}
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err = errUnsupport
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return
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}
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func (c *udpConn) SyscallConn() (rc syscall.RawConn, err error) {
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if nc, ok := c.PacketConn.(syscall.Conn); ok {
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return nc.SyscallConn()
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}
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err = errUnsupport
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return
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}
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func (c *udpConn) SetDSCP(n int) error {
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if nc, ok := c.PacketConn.(setDSCP); ok {
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return nc.SetDSCP(n)
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}
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return nil
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}
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type UDPConn interface {
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net.PacketConn
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io.Reader
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io.Writer
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readUDP
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writeUDP
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setBuffer
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remoteAddr
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syscall.Conn
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}
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type setBuffer interface {
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SetReadBuffer(bytes int) error
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SetWriteBuffer(bytes int) error
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}
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type readUDP interface {
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ReadFromUDP(b []byte) (n int, addr *net.UDPAddr, err error)
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ReadMsgUDP(b, oob []byte) (n, oobn, flags int, addr *net.UDPAddr, err error)
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}
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type writeUDP interface {
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WriteToUDP(b []byte, addr *net.UDPAddr) (int, error)
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WriteMsgUDP(b, oob []byte, addr *net.UDPAddr) (n, oobn int, err error)
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}
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type remoteAddr interface {
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RemoteAddr() net.Addr
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}
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// tcpraw.TCPConn
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type setDSCP interface {
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SetDSCP(int) error
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}
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@ -1,32 +0,0 @@
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package wrapper
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import (
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"net"
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"github.com/go-gost/core/metrics"
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)
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type listener struct {
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service string
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net.Listener
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}
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func WrapListener(service string, ln net.Listener) net.Listener {
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if !metrics.IsEnabled() {
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return ln
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}
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return &listener{
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service: service,
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Listener: ln,
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}
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}
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func (ln *listener) Accept() (net.Conn, error) {
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c, err := ln.Listener.Accept()
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if err != nil {
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return nil, err
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}
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return WrapConn(ln.service, c), nil
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}
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Reference in New Issue
Block a user