154 lines
3.6 KiB
Go
154 lines
3.6 KiB
Go
package full
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import (
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"context"
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"math"
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"sort"
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"github.com/filecoin-project/lotus/build"
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"github.com/filecoin-project/lotus/chain/messagepool"
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"github.com/filecoin-project/lotus/chain/stmgr"
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"github.com/filecoin-project/lotus/chain/store"
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"github.com/filecoin-project/lotus/chain/types"
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"github.com/filecoin-project/go-address"
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"github.com/filecoin-project/specs-actors/actors/abi/big"
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"github.com/filecoin-project/specs-actors/actors/runtime/exitcode"
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"go.uber.org/fx"
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"golang.org/x/xerrors"
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)
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type GasAPI struct {
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fx.In
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Stmgr *stmgr.StateManager
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Chain *store.ChainStore
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Mpool *messagepool.MessagePool
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}
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const MinGasPrice = 1
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const BaseFeeEstimNBlocks = 20
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func (a *GasAPI) GasEstimateFeeCap(ctx context.Context, maxqueueblks int64,
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tsk types.TipSetKey) (types.BigInt, error) {
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ts := a.Chain.GetHeaviestTipSet()
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parentBaseFee := ts.Blocks()[0].ParentBaseFee
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increaseFactor := math.Pow(1+1/build.BaseFeeMaxChangeDenom, BaseFeeEstimNBlocks)
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out := types.BigMul(parentBaseFee, types.NewInt(uint64(increaseFactor*(1<<8))))
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out = types.BigDiv(parentBaseFee, types.NewInt(1<<8))
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return out, nil
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}
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func (a *GasAPI) GasEsitmateGasPremium(ctx context.Context, nblocksincl uint64,
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sender address.Address, gaslimit int64, _ types.TipSetKey) (types.BigInt, error) {
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if nblocksincl == 0 {
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nblocksincl = 1
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}
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type gasMeta struct {
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price big.Int
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used int64
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}
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var prices []gasMeta
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var gasUsed int64
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var blocks int
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ts := a.Chain.GetHeaviestTipSet()
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for i := uint64(0); i < nblocksincl*2; i++ {
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if len(ts.Parents().Cids()) == 0 {
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break // genesis
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}
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pts, err := a.Chain.LoadTipSet(ts.Parents())
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if err != nil {
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return types.BigInt{}, err
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}
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blocks += len(pts.Blocks())
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msgs, err := a.Chain.MessagesForTipset(pts)
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if err != nil {
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return types.BigInt{}, xerrors.Errorf("loading messages: %w", err)
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}
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for i, msg := range msgs {
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r, err := a.Chain.GetParentReceipt(ts.MinTicketBlock(), i)
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if err != nil {
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return types.BigInt{}, xerrors.Errorf("getting receipt: %w", err)
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}
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prices = append(prices, gasMeta{
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price: msg.VMMessage().GasPremium,
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used: r.GasUsed,
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})
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gasUsed += r.GasUsed
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}
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ts = pts
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}
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sort.Slice(prices, func(i, j int) bool {
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// sort desc by price
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return prices[i].price.GreaterThan(prices[j].price)
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})
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// todo: account for how full blocks are
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at := gasUsed / 2
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prev := big.Zero()
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for _, price := range prices {
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at -= price.used
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if at > 0 {
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prev = price.price
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continue
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}
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return types.BigAdd(big.Div(types.BigAdd(price.price, prev), types.NewInt(2)), big.NewInt(1)), nil
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}
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switch nblocksincl {
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case 1:
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return types.NewInt(MinGasPrice + 2), nil
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case 2:
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return types.NewInt(MinGasPrice + 1), nil
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default:
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return types.NewInt(MinGasPrice), nil
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}
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}
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func (a *GasAPI) GasEstimateGasLimit(ctx context.Context, msgIn *types.Message, _ types.TipSetKey) (int64, error) {
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msg := *msgIn
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msg.GasLimit = build.BlockGasLimit
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msg.GasFeeCap = types.NewInt(build.MinimumBaseFee + 1)
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msg.GasPremium = types.NewInt(1)
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currTs := a.Chain.GetHeaviestTipSet()
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fromA, err := a.Stmgr.ResolveToKeyAddress(ctx, msgIn.From, currTs)
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if err != nil {
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return -1, xerrors.Errorf("getting key address: %w", err)
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}
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pending, ts := a.Mpool.PendingFor(fromA)
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priorMsgs := make([]types.ChainMsg, 0, len(pending))
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for _, m := range pending {
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priorMsgs = append(priorMsgs, m)
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}
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res, err := a.Stmgr.CallWithGas(ctx, &msg, priorMsgs, ts)
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if err != nil {
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return -1, xerrors.Errorf("CallWithGas failed: %w", err)
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}
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if res.MsgRct.ExitCode != exitcode.Ok {
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return -1, xerrors.Errorf("message execution failed: exit %s, reason: %s", res.MsgRct.ExitCode, res.Error)
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}
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return res.MsgRct.GasUsed, nil
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}
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