diff --git a/trie/database.go b/trie/database.go index 2915ff9484..535ad87d72 100644 --- a/trie/database.go +++ b/trie/database.go @@ -189,6 +189,15 @@ func (db *Database) WritePreimages() { } } +// Preimage retrieves a cached trie node pre-image from memory. If it cannot be +// found cached, the method queries the persistent database for the content. +func (db *Database) Preimage(hash common.Hash) []byte { + if db.preimages == nil { + return nil + } + return db.preimages.preimage(hash) +} + // Cap iteratively flushes old but still referenced trie nodes until the total // memory usage goes below the given threshold. The held pre-images accumulated // up to this point will be flushed in case the size exceeds the threshold.