kubo/exchange/bitswap/strategy/math.go
Brian Tiger Chow fd086b9c48 refac(exchange) bitswap -> exchange/bitswap
Move go-ipfs/bitswap package to go-ipfs/exchange/bitswap

* Delineates the difference between the generic exchange interface and
  implementations (eg. BitSwap protocol)

  Thus, the bitswap protocol can be refined without having to overthink
  how future exchanges will work. Aspects common to BitSwap and other
  exchanges can be extracted out to the exchange package in piecemeal.

  Future exchange implementations can be placed in sibling packages next
  to exchange/bitswap. (eg. exchange/multilateral)
2014-09-22 04:06:13 -07:00

32 lines
515 B
Go

package strategy
import (
"math"
"math/rand"
)
type strategyFunc func(*ledger) bool
func standardStrategy(l *ledger) bool {
return rand.Float64() <= probabilitySend(l.Accounting.Value())
}
func yesManStrategy(l *ledger) bool {
return true
}
func probabilitySend(ratio float64) float64 {
x := 1 + math.Exp(6-3*ratio)
y := 1 / x
return 1 - y
}
type debtRatio struct {
BytesSent uint64
BytesRecv uint64
}
func (dr *debtRatio) Value() float64 {
return float64(dr.BytesSent) / float64(dr.BytesRecv+1)
}