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core/state: enable partial-functional reader

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This commit is contained in:
Gary Rong 2024-10-22 10:46:37 +08:00
parent ce8cec007c
commit 1438459955
1 changed files with 9 additions and 0 deletions
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9
core/state/database.go
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@ -179,10 +179,19 @@ func (db *CachingDB) Reader(stateRoot common.Hash) (Reader, error) {
// is optional and may be partially useful if it's not fully
// generated.
if db.snap != nil {
// If standalone state snapshot is available (hash scheme),
// then construct the legacy snap reader.
snap := db.snap.Snapshot(stateRoot)
if snap != nil {
readers = append(readers, newFlatReader(snap))
}
} else {
// If standalone state snapshot is not available, try to construct
// the state reader with database.
reader, err := db.triedb.StateReader(stateRoot)
if err == nil {
readers = append(readers, newFlatReader(reader)) // state reader is optional
}
}
// Set up the trie reader, which is expected to always be available
// as the gatekeeper unless the state is corrupted.