mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
synced 2024-12-22 11:41:19 +00:00
83 lines
2.4 KiB
Go
83 lines
2.4 KiB
Go
package sync
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import (
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lru "github.com/hashicorp/golang-lru/arc/v2"
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"github.com/ledgerwatch/erigon/eth/stagedsync"
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heimdallspan "github.com/ledgerwatch/erigon/polygon/heimdall/span"
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libcommon "github.com/ledgerwatch/erigon-lib/common"
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"github.com/ledgerwatch/erigon/core/types"
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"github.com/ledgerwatch/erigon/polygon/bor"
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"github.com/ledgerwatch/erigon/polygon/bor/borcfg"
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"github.com/ledgerwatch/erigon/polygon/bor/valset"
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)
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type DifficultyCalculator interface {
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HeaderDifficulty(header *types.Header) (uint64, error)
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SetSpan(span *heimdallspan.HeimdallSpan)
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}
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type difficultyCalculatorImpl struct {
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borConfig *borcfg.BorConfig
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span *heimdallspan.HeimdallSpan
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validatorSetFactory func() validatorSetInterface
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signaturesCache *lru.ARCCache[libcommon.Hash, libcommon.Address]
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}
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func NewDifficultyCalculator(
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borConfig *borcfg.BorConfig,
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span *heimdallspan.HeimdallSpan,
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validatorSetFactory func() validatorSetInterface,
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signaturesCache *lru.ARCCache[libcommon.Hash, libcommon.Address],
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) DifficultyCalculator {
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if signaturesCache == nil {
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var err error
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signaturesCache, err = lru.NewARC[libcommon.Hash, libcommon.Address](stagedsync.InMemorySignatures)
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if err != nil {
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panic(err)
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}
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}
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impl := difficultyCalculatorImpl{
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borConfig: borConfig,
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span: span,
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validatorSetFactory: validatorSetFactory,
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signaturesCache: signaturesCache,
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}
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if validatorSetFactory == nil {
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impl.validatorSetFactory = impl.makeValidatorSet
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}
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return &impl
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}
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func (impl *difficultyCalculatorImpl) makeValidatorSet() validatorSetInterface {
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return valset.NewValidatorSet(impl.span.ValidatorSet.Validators)
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}
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func (impl *difficultyCalculatorImpl) SetSpan(span *heimdallspan.HeimdallSpan) {
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impl.span = span
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}
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func (impl *difficultyCalculatorImpl) HeaderDifficulty(header *types.Header) (uint64, error) {
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signer, err := bor.Ecrecover(header, impl.signaturesCache, impl.borConfig)
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if err != nil {
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return 0, err
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}
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return impl.signerDifficulty(signer, header.Number.Uint64())
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}
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func (impl *difficultyCalculatorImpl) signerDifficulty(signer libcommon.Address, headerNum uint64) (uint64, error) {
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validatorSet := impl.validatorSetFactory()
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sprintNum := impl.borConfig.CalculateSprintNumber(headerNum)
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if sprintNum > 0 {
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validatorSet.IncrementProposerPriority(int(sprintNum))
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}
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return validatorSet.Difficulty(signer)
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}
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