118 lines
2.7 KiB
Go
118 lines
2.7 KiB
Go
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package torrent
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import (
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"fmt"
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"io"
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"reflect"
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"sync/atomic"
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pp "github.com/anacrolix/torrent/peer_protocol"
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)
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// Various connection-level metrics. At the Torrent level these are
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// aggregates. Chunks are messages with data payloads. Data is actual torrent
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// content without any overhead. Useful is something we needed locally.
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// Unwanted is something we didn't ask for (but may still be useful). Written
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// is things sent to the peer, and Read is stuff received from them.
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type ConnStats struct {
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// Total bytes on the wire. Includes handshakes and encryption.
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BytesWritten Count
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BytesWrittenData Count
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BytesRead Count
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BytesReadData Count
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BytesReadUsefulData Count
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ChunksWritten Count
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ChunksRead Count
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ChunksReadUseful Count
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ChunksReadWasted Count
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MetadataChunksRead Count
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// Number of pieces data was written to, that subsequently passed verification.
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PiecesDirtiedGood Count
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// Number of pieces data was written to, that subsequently failed
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// verification. Note that a connection may not have been the sole dirtier
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// of a piece.
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PiecesDirtiedBad Count
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}
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func (me *ConnStats) Copy() (ret ConnStats) {
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for i := 0; i < reflect.TypeOf(ConnStats{}).NumField(); i++ {
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n := reflect.ValueOf(me).Elem().Field(i).Addr().Interface().(*Count).Int64()
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reflect.ValueOf(&ret).Elem().Field(i).Addr().Interface().(*Count).Add(n)
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}
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return
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}
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type Count struct {
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n int64
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}
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var _ fmt.Stringer = (*Count)(nil)
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func (me *Count) Add(n int64) {
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atomic.AddInt64(&me.n, n)
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}
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func (me *Count) Int64() int64 {
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return atomic.LoadInt64(&me.n)
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}
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func (me *Count) String() string {
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return fmt.Sprintf("%v", me.Int64())
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}
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func (cs *ConnStats) wroteMsg(msg *pp.Message) {
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// TODO: Track messages and not just chunks.
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switch msg.Type {
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case pp.Piece:
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cs.ChunksWritten.Add(1)
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cs.BytesWrittenData.Add(int64(len(msg.Piece)))
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}
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}
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func (cs *ConnStats) readMsg(msg *pp.Message) {
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// We want to also handle extended metadata pieces here, but we wouldn't
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// have decoded the extended payload yet.
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switch msg.Type {
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case pp.Piece:
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cs.ChunksRead.Add(1)
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cs.BytesReadData.Add(int64(len(msg.Piece)))
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}
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}
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func (cs *ConnStats) incrementPiecesDirtiedGood() {
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cs.PiecesDirtiedGood.Add(1)
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}
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func (cs *ConnStats) incrementPiecesDirtiedBad() {
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cs.PiecesDirtiedBad.Add(1)
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}
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func add(n int64, f func(*ConnStats) *Count) func(*ConnStats) {
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return func(cs *ConnStats) {
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p := f(cs)
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p.Add(n)
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}
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}
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type connStatsReadWriter struct {
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rw io.ReadWriter
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c *connection
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}
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func (me connStatsReadWriter) Write(b []byte) (n int, err error) {
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n, err = me.rw.Write(b)
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me.c.wroteBytes(int64(n))
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return
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}
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func (me connStatsReadWriter) Read(b []byte) (n int, err error) {
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n, err = me.rw.Read(b)
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me.c.readBytes(int64(n))
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return
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}
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