def get_tx_metadata(db, state_code, txhash: bytes):
try:
tx_metadata = db.get(str(state_code) + bin2hstr(txhash))
except Exception:
return None
if tx_metadata is None:
return None
txn_json, block_number, _ = tx_metadata
return Transaction.from_json(txn_json), block_number
def get_txn_count(db, state_code, addr):
try:
return db.get(state_code + b'txn_count_' + addr)
except KeyError:
pass
except Exception as e:
# FIXME: Review
logger.error('Exception in get_txn_count')
logger.exception(e)
return 0
def get_last_txs(db, state_code) -> list:
try:
last_txn = db.get(state_code + b'last_txn')
except: # noqa
return []
txs = []
for tx_metadata in last_txn:
tx_json, block_num, block_ts = tx_metadata
tx = Transaction.from_json(tx_json)
txs.append(tx)
return txs
def get_state_version(db, state_code):
try:
return db.get(state_code + b'state_version')
except KeyError:
return 0
