83 lines
2.2 KiB
Go
83 lines
2.2 KiB
Go
package sealing
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import (
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"context"
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"github.com/filecoin-project/specs-actors/actors/abi"
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"github.com/filecoin-project/specs-actors/actors/builtin/miner"
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)
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type PreCommitPolicy interface {
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Expiration(ctx context.Context, ps ...Piece) (abi.ChainEpoch, error)
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}
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type Chain interface {
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ChainHead(ctx context.Context) (TipSetToken, abi.ChainEpoch, error)
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}
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// BasicPreCommitPolicy satisfies PreCommitPolicy. It has two modes:
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//
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// Mode 1: The sector contains a non-zero quantity of pieces with deal info
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// Mode 2: The sector contains no pieces with deal info
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//
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// The BasicPreCommitPolicy#Expiration method is given a slice of the pieces
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// which the miner has encoded into the sector, and from that slice picks either
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// the first or second mode.
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//
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// If we're in Mode 1: The pre-commit expiration epoch will be the maximum
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// deal end epoch of a piece in the sector.
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//
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// If we're in Mode 2: The pre-commit expiration epoch will be set to the
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// current epoch + the provided default duration.
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type BasicPreCommitPolicy struct {
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api Chain
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provingBoundary abi.ChainEpoch
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duration abi.ChainEpoch
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}
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// NewBasicPreCommitPolicy produces a BasicPreCommitPolicy
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func NewBasicPreCommitPolicy(api Chain, duration abi.ChainEpoch, provingBoundary abi.ChainEpoch) BasicPreCommitPolicy {
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return BasicPreCommitPolicy{
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api: api,
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provingBoundary: provingBoundary,
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duration: duration,
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}
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}
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// Expiration produces the pre-commit sector expiration epoch for an encoded
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// replica containing the provided enumeration of pieces and deals.
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func (p *BasicPreCommitPolicy) Expiration(ctx context.Context, ps ...Piece) (abi.ChainEpoch, error) {
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_, epoch, err := p.api.ChainHead(ctx)
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if err != nil {
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return 0, nil
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}
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var end *abi.ChainEpoch
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for _, p := range ps {
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if p.DealInfo == nil {
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continue
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}
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if p.DealInfo.DealSchedule.EndEpoch < epoch {
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log.Warnf("piece schedule %+v ended before current epoch %d", p, epoch)
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continue
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}
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if end == nil || *end < p.DealInfo.DealSchedule.EndEpoch {
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tmp := p.DealInfo.DealSchedule.EndEpoch
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end = &tmp
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}
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}
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if end == nil {
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tmp := epoch + p.duration
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end = &tmp
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}
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*end += miner.WPoStProvingPeriod - (*end % miner.WPoStProvingPeriod) + p.provingBoundary - 1
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return *end, nil
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}
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