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95 lines
2.0 KiB
Go
95 lines
2.0 KiB
Go
package decision
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import (
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"sync"
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"time"
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wl "github.com/ipfs/go-ipfs/exchange/bitswap/wantlist"
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peer "gx/ipfs/Qma7H6RW8wRrfZpNSXwxYGcd1E149s42FpWNpDNieSVrnU/go-libp2p-peer"
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cid "gx/ipfs/QmcZfnkapfECQGcLZaf9B79NRg7cRa9EnZh4LSbkCzwNvY/go-cid"
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)
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func newLedger(p peer.ID) *ledger {
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return &ledger{
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wantList: wl.New(),
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Partner: p,
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sentToPeer: make(map[string]time.Time),
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}
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}
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// ledger stores the data exchange relationship between two peers.
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// NOT threadsafe
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type ledger struct {
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// Partner is the remote Peer.
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Partner peer.ID
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// Accounting tracks bytes sent and recieved.
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Accounting debtRatio
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// lastExchange is the time of the last data exchange.
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lastExchange time.Time
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// exchangeCount is the number of exchanges with this peer
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exchangeCount uint64
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// wantList is a (bounded, small) set of keys that Partner desires.
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wantList *wl.Wantlist
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// sentToPeer is a set of keys to ensure we dont send duplicate blocks
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// to a given peer
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sentToPeer map[string]time.Time
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// ref is the reference count for this ledger, its used to ensure we
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// don't drop the reference to this ledger in multi-connection scenarios
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ref int
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lk sync.Mutex
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}
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type Receipt struct {
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Peer string
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Value float64
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Sent uint64
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Recv uint64
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Exchanged uint64
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}
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type debtRatio struct {
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BytesSent uint64
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BytesRecv uint64
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}
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func (dr *debtRatio) Value() float64 {
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return float64(dr.BytesSent) / float64(dr.BytesRecv+1)
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}
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func (l *ledger) SentBytes(n int) {
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l.exchangeCount++
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l.lastExchange = time.Now()
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l.Accounting.BytesSent += uint64(n)
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}
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func (l *ledger) ReceivedBytes(n int) {
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l.exchangeCount++
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l.lastExchange = time.Now()
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l.Accounting.BytesRecv += uint64(n)
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}
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func (l *ledger) Wants(k *cid.Cid, priority int) {
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log.Debugf("peer %s wants %s", l.Partner, k)
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l.wantList.Add(k, priority)
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}
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func (l *ledger) CancelWant(k *cid.Cid) {
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l.wantList.Remove(k)
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}
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func (l *ledger) WantListContains(k *cid.Cid) (*wl.Entry, bool) {
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return l.wantList.Contains(k)
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}
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func (l *ledger) ExchangeCount() uint64 {
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return l.exchangeCount
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}
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