mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
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114 lines
3.4 KiB
Go
114 lines
3.4 KiB
Go
package changeset
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import (
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"errors"
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"github.com/ledgerwatch/turbo-geth/common"
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"github.com/ledgerwatch/turbo-geth/common/dbutils"
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"github.com/ledgerwatch/turbo-geth/ethdb"
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)
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const (
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DefaultIncarnation = uint64(1)
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)
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var (
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ErrNotFound = errors.New("not found")
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errIncorrectData = errors.New("empty prepared data")
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ErrFindValue = errors.New("find value error")
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)
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/* Plain changesets (key is a common.Address) */
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func NewStorageChangeSetPlain() *ChangeSet {
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return &ChangeSet{
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Changes: make([]Change, 0),
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keyLen: common.AddressLength + common.HashLength + common.IncarnationLength,
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}
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}
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func EncodeStoragePlain(blockN uint64, s *ChangeSet, f func(k, v []byte) error) error {
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return encodeStorage2(blockN, s, common.AddressLength, f)
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}
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type StorageChangeSetPlain struct{ c ethdb.CursorDupSort }
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func (b StorageChangeSetPlain) Find(blockNumber uint64, k []byte) ([]byte, error) {
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return findWithoutIncarnationInStorageChangeSet2(b.c, blockNumber, common.AddressLength, k[:common.AddressLength], k[common.AddressLength:])
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}
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func (b StorageChangeSetPlain) FindWithIncarnation(blockNumber uint64, k []byte) ([]byte, error) {
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return findInStorageChangeSet2(b.c, blockNumber, common.AddressLength, k)
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}
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func (b StorageChangeSetPlain) FindWithoutIncarnation(blockNumber uint64, addressToFind []byte, keyToFind []byte) ([]byte, error) {
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return findWithoutIncarnationInStorageChangeSet2(b.c, blockNumber, common.AddressLength, addressToFind, keyToFind)
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}
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// RewindDataPlain generates rewind data for all plain buckets between the timestamp
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// timestapSrc is the current timestamp, and timestamp Dst is where we rewind
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func RewindData(db ethdb.Getter, timestampSrc, timestampDst uint64, quit <-chan struct{}) (map[string][]byte, map[string][]byte, error) {
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// Collect list of buckets and keys that need to be considered
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collector := newRewindDataCollector()
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if err := walkAndCollect(
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collector.AccountWalker,
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db, dbutils.PlainAccountChangeSetBucket,
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timestampDst+1, timestampSrc,
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quit,
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); err != nil {
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return nil, nil, err
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}
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if err := walkAndCollect(
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collector.StorageWalker,
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db, dbutils.PlainStorageChangeSetBucket,
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timestampDst+1, timestampSrc,
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quit,
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); err != nil {
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return nil, nil, err
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}
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return collector.AccountData, collector.StorageData, nil
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}
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type rewindDataCollector struct {
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AccountData map[string][]byte
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StorageData map[string][]byte
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}
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func newRewindDataCollector() *rewindDataCollector {
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return &rewindDataCollector{make(map[string][]byte), make(map[string][]byte)}
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}
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func (c *rewindDataCollector) AccountWalker(k, v []byte) error {
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if _, ok := c.AccountData[string(k)]; !ok {
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c.AccountData[string(k)] = v
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}
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return nil
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}
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func (c *rewindDataCollector) StorageWalker(k, v []byte) error {
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if _, ok := c.StorageData[string(k)]; !ok {
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c.StorageData[string(k)] = v
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}
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return nil
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}
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func walkAndCollect(collectorFunc func([]byte, []byte) error, db ethdb.Getter, bucket string, timestampDst, timestampSrc uint64, quit <-chan struct{}) error {
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fromDBFormat := FromDBFormat(Mapper[bucket].KeySize)
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return db.Walk(bucket, dbutils.EncodeBlockNumber(timestampDst), 0, func(dbKey, dbValue []byte) (bool, error) {
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if err := common.Stopped(quit); err != nil {
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return false, err
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}
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timestamp, k, v := fromDBFormat(dbKey, dbValue)
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if timestamp > timestampSrc {
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return false, nil
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}
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if innerErr := collectorFunc(common.CopyBytes(k), common.CopyBytes(v)); innerErr != nil {
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return false, innerErr
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}
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return true, nil
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})
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}
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