def get_transaction_from_lookup(self, tx_hash) -> BaseTransaction:
lookup = Lookup.transaction(tx_hash)
if lookup in self.db:
height, seek_index = loads(self.db.get(lookup))
header = self.get_header_from_height(height)
tx_root = header.hash_transaction_root
trie = prepare_trie(tx_root, self.db)
trie_key = get_trie_key(int_to_bytes32(seek_index))
tx = trie.get(trie_key)
return tx
def get_receipt(self, tx_hash):
lookup = Lookup.transaction(tx_hash)
if lookup in self.db:
height, seek_index = loads(self.db.get(lookup))
header = self.get_header_from_height(height)
receipt_root = header.hash_receipt_root
trie = prepare_trie(receipt_root, self.db)
trie_key = get_trie_key(int_to_bytes32(seek_index))
receipt = trie.get(trie_key)
return receipt
def _set_transaction_from_lookup(self, height, seek_index, transaction):
lookup_key = Lookup.transaction(transaction.hash)
leaf_key = dumps((height, seek_index))
self.db.put(lookup_key, leaf_key)
def has_transaction(self, tx_hash):
lookup = Lookup.transaction(tx_hash)
return lookup in self.db