add election backtest

This commit is contained in:
zgfzgf 2021-04-03 11:52:30 +08:00
parent eede19fb0b
commit ef08bd48b5

View File

@ -1,10 +1,15 @@
package main
import (
"context"
"encoding/binary"
"fmt"
"math/rand"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/go-state-types/abi"
"github.com/filecoin-project/lotus/api"
"github.com/filecoin-project/lotus/chain/gen"
"github.com/filecoin-project/lotus/chain/types"
lcli "github.com/filecoin-project/lotus/cli"
builtin2 "github.com/filecoin-project/specs-actors/v2/actors/builtin"
@ -18,6 +23,7 @@ var electionCmd = &cli.Command{
Subcommands: []*cli.Command{
electionRunDummy,
electionEstimate,
electionBacktest,
},
}
@ -124,3 +130,100 @@ var electionEstimate = &cli.Command{
return nil
},
}
var electionBacktest = &cli.Command{
Name: "backtest",
Usage: "Backtest elections with given miner",
ArgsUsage: "[minerAddress]",
Flags: []cli.Flag{
&cli.Uint64Flag{
Name: "height",
Usage: "blockchain head height",
},
&cli.IntFlag{
Name: "count",
Usage: "blockchain count",
Value: 120,
},
},
Action: func(cctx *cli.Context) error {
api, closer, err := lcli.GetFullNodeAPI(cctx)
if err != nil {
return xerrors.Errorf("GetFullNodeAPI: %w", err)
}
defer closer()
ctx := lcli.ReqContext(cctx)
var head *types.TipSet
if cctx.IsSet("height") {
head, err = api.ChainGetTipSetByHeight(ctx, abi.ChainEpoch(cctx.Uint64("height")), types.EmptyTSK)
if err != nil {
return xerrors.Errorf("ChainGetTipSetByHeight: %w", err)
}
} else {
head, err = api.ChainHead(ctx)
if err != nil {
return xerrors.Errorf("ChainHead: %w", err)
}
}
miner, err := address.NewFromString(cctx.Args().First())
if err != nil {
return xerrors.Errorf("miner address: %w", err)
}
count := cctx.Int("count")
if count < 1 {
return xerrors.Errorf("count: %d", count)
}
fmt.Println("height, winCount")
roundEnd := head.Height() + abi.ChainEpoch(1)
for i := 0; i < count; {
for round := head.Height() + abi.ChainEpoch(1); round <= roundEnd; round++ {
i++
win, err := backTestWinner(ctx, miner, round, head, api)
if err == nil && win != nil {
fmt.Printf("%d, %d\n", round, win.WinCount)
}
}
roundEnd = head.Height()
head, err = api.ChainGetTipSet(ctx, head.Parents())
if err != nil {
break
}
}
return nil
},
}
func backTestWinner(ctx context.Context, miner address.Address, round abi.ChainEpoch, ts *types.TipSet, api api.FullNode) (*types.ElectionProof, error) {
mbi, err := api.MinerGetBaseInfo(ctx, miner, round, ts.Key())
if err != nil {
return nil, xerrors.Errorf("failed to get mining base info: %w", err)
}
if mbi == nil {
return nil, nil
}
if !mbi.EligibleForMining {
return nil, nil
}
brand := mbi.PrevBeaconEntry
bvals := mbi.BeaconEntries
if len(bvals) > 0 {
brand = bvals[len(bvals)-1]
}
winner, err := gen.IsRoundWinner(ctx, ts, round, miner, brand, mbi, api)
if err != nil {
return nil, xerrors.Errorf("failed to check if we win next round: %w", err)
}
if winner == nil {
return nil, nil
}
return winner, nil
}