def get_block(rpc, session, hash):
block = session.query(core.Block).filter_by(hash=hash).first()
if block is not None:
return block, block.transactions
try:
hash_string = hash_integer_to_string(hash)
block_dict = rpc.getblock(hash_string)
except HTTPError:
raise MissingBlockHeader(hash)
kwargs = {}
kwargs['version'] = int(block_dict['version'])
if int(block_dict['height']) > 0:
kwargs['parent_hash'] = hash_string_to_integer(
block_dict['previousblockhash'])
else:
kwargs['parent_hash'] = 0
kwargs['merkle_hash'] = hash_string_to_integer(block_dict['merkleroot'])
kwargs['time'] = datetime.utcfromtimestamp(block_dict['time'])
kwargs['bits'] = hash_string_to_integer(block_dict['bits'], 4)
kwargs['nonce'] = int(block_dict['nonce'])
block = core.Block(**kwargs)
assert block.hash == hash
for tx_hash_string in block_dict['tx']:
tx_hash = hash_string_to_integer(tx_hash_string)
tx = session.query(core.Transaction).filter_by(hash=tx_hash).first()
if tx is None:
try:
tx_raw = rpc.getrawtransaction(tx_hash_string)
except HTTPError:
raise MissingTransaction(tx_hash)
tx_file = StringIO(tx_raw.decode('hex'))
tx = core.Transaction.deserialize(tx_file)
assert not tx_file.read()
assert tx.hash == tx_hash
block.transactions.append(tx)
session.add(block)
session.flush()
return block, block.transactions
def get_block(rpc, session, hash):
block = session.query(core.Block).filter_by(hash=hash).first()
if block is not None:
return block, block.transactions
try:
hash_string = hash_integer_to_string(hash)
block_dict = rpc.getblock(hash_string)
except HTTPError:
raise MissingBlockHeader(hash)
kwargs = {}
kwargs['version'] = int(block_dict['version'])
if int(block_dict['height']) > 0:
kwargs['parent_hash'] = hash_string_to_integer(block_dict['previousblockhash'])
else:
kwargs['parent_hash'] = 0
kwargs['merkle_hash'] = hash_string_to_integer(block_dict['merkleroot'])
kwargs['time'] = datetime.utcfromtimestamp(block_dict['time'])
kwargs['bits'] = hash_string_to_integer(block_dict['bits'], 4)
kwargs['nonce'] = int(block_dict['nonce'])
block = core.Block(**kwargs)
assert block.hash == hash
for tx_hash_string in block_dict['tx']:
tx_hash = hash_string_to_integer(tx_hash_string)
tx = session.query(core.Transaction).filter_by(hash=tx_hash).first()
if tx is None:
try:
tx_raw = rpc.getrawtransaction(tx_hash_string)
except HTTPError:
raise MissingTransaction(tx_hash)
tx_file = StringIO(tx_raw.decode('hex'))
tx = core.Transaction.deserialize(tx_file)
assert not tx_file.read()
assert tx.hash == tx_hash
block.transactions.append(tx)
session.add(block)
session.flush()
return block, block.transactions
def process_result_value(self, value, dialect):
if value is None:
return None
file_ = StringIO(value)
bitlength = deserialize_varint(file_)
return self._implicit + Bits(bytes=file_.read(), length=bitlength)
genesis_hash = hash256(parameters.genesis[:80]).intdigest(),
testnet = parameters.testnet,
pubkey_hash_prefix = parameters.pubkey_hash_prefix,
script_hash_prefix = parameters.script_hash_prefix,
secret_prefix = parameters.secret_prefix)
session.add(chain)
session.commit()
genesis_block_hash_string = rpc.getblockhash(0)
genesis_block_hash = hash_string_to_integer(genesis_block_hash_string)
genesis_file = StringIO(CHAIN_PARAMETERS[FLAGS.network].genesis)
genesis_block = core.Block.deserialize(genesis_file)
genesis_transactions = list(deserialize_list(genesis_file, core.Transaction.deserialize))
assert not genesis_file.read()
for tx in genesis_transactions:
genesis_block.transactions.append(
session.query(core.Transaction).filter_by(hash=tx.hash).first() or tx)
assert genesis_block.hash == genesis_block_hash
assert genesis_block.merkle_hash == merkle(genesis_transactions)
query = session.query(core.Block).filter_by(hash=genesis_block.hash)
if query.count():
genesis_block = query.first()
else:
session.add(genesis_block)
session.commit()
def process_result_value(self, value, dialect):
if value is None:
return None
file_ = StringIO(value)
bitlength = deserialize_varint(file_)
return self._implicit + Bits(bytes=file_.read(), length=bitlength)
testnet=parameters.testnet,
pubkey_hash_prefix=parameters.pubkey_hash_prefix,
script_hash_prefix=parameters.script_hash_prefix,
secret_prefix=parameters.secret_prefix)
session.add(chain)
session.commit()
genesis_block_hash_string = rpc.getblockhash(0)
genesis_block_hash = hash_string_to_integer(genesis_block_hash_string)
genesis_file = StringIO(CHAIN_PARAMETERS[FLAGS.network].genesis)
genesis_block = core.Block.deserialize(genesis_file)
genesis_transactions = list(
deserialize_list(genesis_file, core.Transaction.deserialize))
assert not genesis_file.read()
for tx in genesis_transactions:
genesis_block.transactions.append(
session.query(core.Transaction).filter_by(hash=tx.hash).first()
or tx)
assert genesis_block.hash == genesis_block_hash
assert genesis_block.merkle_hash == merkle(genesis_transactions)
query = session.query(core.Block).filter_by(hash=genesis_block.hash)
if query.count():
genesis_block = query.first()
else:
session.add(genesis_block)
session.commit()