100 lines
2.6 KiB
Go
100 lines
2.6 KiB
Go
package main
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import (
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"bufio"
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"context"
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"errors"
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"github.com/filecoin-project/go-state-types/abi"
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"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"
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proof2 "github.com/filecoin-project/specs-actors/v2/actors/runtime/proof"
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"github.com/ipfs/go-datastore"
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"github.com/minio/blake2b-simd"
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cbg "github.com/whyrusleeping/cbor-gen"
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)
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type cachingVerifier struct {
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ds datastore.Datastore
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backend ffiwrapper.Verifier
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}
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const bufsize = 128
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func (cv cachingVerifier) withCache(execute func() (bool, error), param cbg.CBORMarshaler) (bool, error) {
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hasher := blake2b.New256()
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wr := bufio.NewWriterSize(hasher, bufsize)
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err := param.MarshalCBOR(wr)
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if err != nil {
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log.Errorf("could not marshal call info: %+v", err)
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return execute()
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}
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err = wr.Flush()
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if err != nil {
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log.Errorf("could not flush: %+v", err)
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return execute()
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}
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hash := hasher.Sum(nil)
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key := datastore.NewKey(string(hash))
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fromDs, err := cv.ds.Get(key)
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if err == nil {
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switch fromDs[0] {
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case 's':
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return true, nil
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case 'f':
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return false, nil
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case 'e':
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return false, errors.New(string(fromDs[1:]))
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default:
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log.Errorf("bad cached result in cache %s(%x)", fromDs[0], fromDs[0])
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return execute()
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}
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} else if errors.Is(err, datastore.ErrNotFound) {
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// recalc
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ok, err := execute()
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var save []byte
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if err != nil {
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if ok {
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log.Errorf("success with an error: %+v", err)
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} else {
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save = append([]byte{'e'}, []byte(err.Error())...)
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}
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} else if ok {
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save = []byte{'s'}
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} else {
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save = []byte{'f'}
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}
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if len(save) != 0 {
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errSave := cv.ds.Put(key, save)
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if errSave != nil {
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log.Errorf("error saving result: %+v", errSave)
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}
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}
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return ok, err
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} else {
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log.Errorf("could not get data from cache: %+v", err)
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return execute()
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}
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}
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func (cv *cachingVerifier) VerifySeal(svi proof2.SealVerifyInfo) (bool, error) {
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return cv.withCache(func() (bool, error) {
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return cv.backend.VerifySeal(svi)
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}, &svi)
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}
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func (cv *cachingVerifier) VerifyWinningPoSt(ctx context.Context, info proof2.WinningPoStVerifyInfo) (bool, error) {
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return cv.backend.VerifyWinningPoSt(ctx, info)
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}
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func (cv *cachingVerifier) VerifyWindowPoSt(ctx context.Context, info proof2.WindowPoStVerifyInfo) (bool, error) {
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return cv.withCache(func() (bool, error) {
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return cv.backend.VerifyWindowPoSt(ctx, info)
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}, &info)
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}
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func (cv *cachingVerifier) GenerateWinningPoStSectorChallenge(ctx context.Context, proofType abi.RegisteredPoStProof, a abi.ActorID, rnd abi.PoStRandomness, u uint64) ([]uint64, error) {
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return cv.backend.GenerateWinningPoStSectorChallenge(ctx, proofType, a, rnd, u)
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}
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var _ ffiwrapper.Verifier = (*cachingVerifier)(nil)
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