def test_same_message_after_init():
node_id_1 = 'n1'
node_id_2 = 'n2'
node_id_3 = 'n3'
blockchain1 = simple_blockchain_factory(
node_id_1,
'http://localhost:5001',
100,
[node_id_2, node_id_3],
)
node2 = node_factory(node_id_2, Endpoint.from_uri('http://localhost:5002'))
node3 = node_factory(node_id_3, Endpoint.from_uri('http://localhost:5003'))
blockchain1.consensus.add_to_validator_connected(node2)
blockchain1.consensus.add_to_validator_connected(node3)
message = Message.new('message')
ballot1 = Ballot.new(node_id_1, message, IsaacState.INIT, BallotVotingResult.agree)
ballot2 = copy_ballot(ballot1, node_id_2, IsaacState.INIT)
ballot3 = copy_ballot(ballot1, node_id_3, IsaacState.INIT)
blockchain1.receive_ballots(ballot1, ballot2, ballot3)
assert blockchain1.consensus.slot.get_ballot_state(ballot1) == IsaacState.SIGN
existing_ballot_ids = set(
map(lambda x: x.ballot_id, filter(lambda x: x is not None, blockchain1.consensus.slot.get_all_ballots())))
# send same message in new ballot, which has previous state
new_ballot1 = Ballot.new(node_id_1, message, IsaacState.INIT, BallotVotingResult.agree)
assert new_ballot1.ballot_id != ballot1.ballot_id
ballot1 = copy_ballot(new_ballot1, node_id_1, IsaacState.INIT)
ballot2 = copy_ballot(new_ballot1, node_id_2, IsaacState.INIT)
ballot3 = copy_ballot(new_ballot1, node_id_3, IsaacState.INIT)
blockchain1.receive_ballots(ballot1, ballot2, ballot3)
# node doesn't have ballot1, so ballot1 in node state is NONE
assert blockchain1.consensus.slot.get_ballot_state(ballot1) == IsaacState.NONE
list(filter(
lambda x: x.ballot_id == ballot1.ballot_id, blockchain1.consensus.slot.get_validator_ballots(ballot1).values()
))
assert len([]) < 1
current_ballot_ids = set(
map(lambda x: x.ballot_id, filter(lambda x: x is not None, blockchain1.consensus.slot.get_all_ballots())))
assert existing_ballot_ids == current_ballot_ids
return
def blockchain_factory(name, address, threshold, validator_endpoint_uris,
slot_size):
node = node_factory(name, Endpoint.from_uri(address))
validators = list()
for uri in validator_endpoint_uris:
validators.append(node_factory(uri, Endpoint.from_uri(uri)), )
consensus = IsaacConsensus(node, threshold, validators, slot_size)
consensus._check_slot_time = check_slot_time_stub
Blockchain.receive_ballot = receive_copy_ballot
return Blockchain(consensus, StubTransport())
def simple_blockchain_factory(name, address, threshold,
validator_endpoint_uris):
node = node_factory(name, Endpoint.from_uri(address))
validators = list()
for uri in validator_endpoint_uris:
validators.append(node_factory(uri, Endpoint(uri, uri, 0)), )
consensus = Consensus(node, threshold, validators)
transport = StubTransport(bind=('0.0.0.0', 5001))
return SimpleBlockchain(consensus, transport)
def test_isaac_consensus():
node = node_factory('n1', Endpoint.from_uri('http://localhost:5001'))
validator_uris = ('http://localhost:5002', 'http://localhost:5003')
validators = list()
for uri in validator_uris:
validators.append(node_factory(uri, Endpoint.from_uri(uri)), )
consensus = IsaacConsensus(node, 100, validators)
assert consensus.minimum == 3
assert consensus.threshold == 100
uris = list(map(lambda x: x.endpoint.uri, consensus.validator_candidates))
assert set(validator_uris) == set(uris)
def blockchain_factory(Consensus, name, address, threshold, validators,
slot_size, queue_size):
node = node_factory(name, Endpoint.from_uri(address))
consensus = Consensus(node, threshold, validators, slot_size)
transport = network_module.Transport(node, loop)
return Blockchain(consensus, transport)
def main(options):
config = collections.namedtuple(
'Config',
('node_name', 'port', 'threshold', 'validators', 'faulty_percent'),
)(uuid.uuid1().hex, 8001, 51, [], 0)
if not pathlib.Path(options.conf).exists():
parser.error('conf file, `%s` does not exists.' % options.conf)
if not pathlib.Path(options.conf).is_file():
parser.error('conf file, `%s` is not valid file.' % options.conf)
conf = configparser.ConfigParser()
conf.read(options.conf)
log.info('conf file, `%s` was loaded', options.conf)
config = config._replace(node_name=conf['node']['name'])
config = config._replace(port=int(conf['node']['port']))
config = config._replace(threshold=int(conf['node']['threshold_percent']))
if conf.has_option('faulty', 'faulty_percent'):
config = config._replace(
faulty_percent=int(conf['faulty']['faulty_percent']))
log.debug('loaded conf: %s', config)
validator_list = []
for i in filter(lambda x: len(x.strip()) > 0,
conf['node']['validator_list'].split(',')):
validator_list.append(Endpoint.from_uri(i.strip()))
config = config._replace(validators=validator_list)
log.debug('Validators: %s' % config.validators)
node = node_factory(
config.node_name,
Endpoint(NETWORK_MODULE.SCHEME, get_local_ipaddress(), config.port),
config.faulty_percent)
consensus_module = get_fba_module('isaac')
consensus = consensus_module.IsaacConsensus(
node,
config.threshold,
tuple(map(lambda x: Node(x.extras['name'], x), config.validators)),
)
log.metric(node=node.name, data=node.to_dict())
transport = NETWORK_MODULE.Transport(bind=('0.0.0.0', config.port))
blockchain = Blockchain(consensus, transport)
base_server = BaseServer(blockchain)
base_server.start()
return
def test_confirm_stuck_ballot():
node_name_1 = 'http://localhost:5001'
node_name_2 = 'http://localhost:5002'
node_name_3 = 'http://localhost:5003'
bc1 = simple_blockchain_factory(
node_name_1,
'http://localhost:5001',
100,
[node_name_2, node_name_3],
)
node2 = node_factory(node_name_2,
Endpoint.from_uri('http://localhost:5002'))
node3 = node_factory(node_name_3,
Endpoint.from_uri('http://localhost:5003'))
bc1.consensus.add_to_validator_connected(node2)
bc1.consensus.add_to_validator_connected(node3)
message = Message.new('message')
ballot_init_1 = Ballot.new(node_name_1, message, IsaacState.INIT,
BallotVotingResult.agree)
ballot_id = ballot_init_1.ballot_id
ballot_init_2 = Ballot(ballot_id, node_name_2, message, IsaacState.INIT,
BallotVotingResult.agree, ballot_init_1.timestamp)
ballot_init_3 = Ballot(ballot_id, node_name_3, message, IsaacState.INIT,
BallotVotingResult.agree, ballot_init_1.timestamp)
bc1.receive_ballot(ballot_init_1)
bc1.receive_ballot(ballot_init_2)
bc1.receive_ballot(ballot_init_3)
assert bc1.consensus.slot.get_ballot_state(
ballot_init_1) == IsaacState.SIGN
time.sleep(LIMIT_TIME + 0.1)
assert bc1.consensus.slot.get_ballot_state(
ballot_init_1) == IsaacState.NONE
return
def generate_blockchains(Consensus,
node_names,
node_endpoints,
threshold,
slot_size=5,
queue_size=100):
blockchains = list()
nodes = list()
for i in range(len(node_names)):
nodes.append(
node_factory(node_names[i], Endpoint.from_uri(node_endpoints[i])))
for i in range(len(node_names)):
validators = copy.deepcopy(nodes)
del validators[i]
blockchain = blockchain_factory(Consensus, node_names[i],
node_endpoints[i], 100, validators,
slot_size, queue_size)
blockchains.append(blockchain)
return blockchains
def test_same_message_after_allconfirm():
node_id_1 = 'n1'
node_id_2 = 'n2'
node_id_3 = 'n3'
blockchain1 = simple_blockchain_factory(
node_id_1,
'http://localhost:5001',
100,
[node_id_2, node_id_3],
)
node2 = node_factory(node_id_2, Endpoint.from_uri('http://localhost:5002'))
node3 = node_factory(node_id_3, Endpoint.from_uri('http://localhost:5003'))
blockchain1.consensus.add_to_validator_connected(node2)
blockchain1.consensus.add_to_validator_connected(node3)
message = Message.new('message')
ballot1 = Ballot.new(node_id_1, message, IsaacState.INIT, BallotVotingResult.agree)
ballot2 = copy_ballot(ballot1, node_id_2, IsaacState.INIT)
ballot3 = copy_ballot(ballot1, node_id_3, IsaacState.INIT)
blockchain1.receive_ballots(ballot1, ballot2, ballot3)
assert blockchain1.consensus.slot.get_ballot_state(ballot1) == IsaacState.SIGN
ballot1 = copy_ballot(ballot1, node_id_1, IsaacState.SIGN)
ballot2 = copy_ballot(ballot1, node_id_2, IsaacState.SIGN)
ballot3 = copy_ballot(ballot1, node_id_3, IsaacState.SIGN)
blockchain1.receive_ballots(ballot1, ballot2, ballot3)
assert blockchain1.consensus.slot.get_ballot_state(ballot1) == IsaacState.ACCEPT
ballot1 = copy_ballot(ballot1, node_id_1, IsaacState.ACCEPT)
ballot2 = copy_ballot(ballot1, node_id_2, IsaacState.ACCEPT)
ballot3 = copy_ballot(ballot1, node_id_3, IsaacState.ACCEPT)
blockchain1.receive_ballots(ballot1, ballot2, ballot3)
assert message in blockchain1.consensus.messages
# send same message in new ballot
new_ballot1 = Ballot.new(node_id_1, message, IsaacState.INIT, BallotVotingResult.agree)
assert new_ballot1.ballot_id != ballot1.ballot_id
ballot1 = copy_ballot(new_ballot1, node_id_1, IsaacState.INIT)
ballot2 = copy_ballot(new_ballot1, node_id_2, IsaacState.INIT)
ballot3 = copy_ballot(new_ballot1, node_id_3, IsaacState.INIT)
blockchain1.receive_ballots(ballot1, ballot2, ballot3)
# node state still remains the previous state
assert message in blockchain1.consensus.messages
ballots = blockchain1.consensus.slot.get_validator_ballots(new_ballot1).values()
assert not ballots
return
def test_use_fake():
node = node_factory('n1', Endpoint.from_uri('http://localhost:5001'))
consensus = FakeConsensus(node)
assert consensus.node_name == 'n1'
def load_design(filename):
design = None
with open(filename) as f:
if filename.split('.')[-1] == 'yml':
design = convert_dict_to_namedtuple(yaml.load(f.read()))
elif filename.split('.')[-1] == 'json':
temp_design = convert_json_config(json.load(f))
design = convert_dict_to_namedtuple(temp_design)
else:
print(
'# error: \"file `%s` is not valid file. yml or json type is needed\"'
% filename)
sys.exit(1)
defined_ports = list()
for name, config in design.nodes._asdict().items():
port = getattr(config, 'port', None)
if port is None:
continue
defined_ports.append(port)
faulty_nodes = dict()
nodes = dict()
for name, config in design.nodes._asdict().items():
port = getattr(config, 'port', None)
if port is None:
port = get_free_port(defined_ports)
endpoint = Endpoint(NETWORK_MODULE.SCHEME,
get_local_ipaddress(),
port,
name=name)
node = node_factory(name, endpoint, 0)
if hasattr(config.quorum, 'threshold'):
threshold = config.quorum.threshold
else:
threshold = design.common.threshold
nodes[name] = dict(node=node,
quorum=dict(validators=list(), threshold=threshold))
faulties = list()
faulty = getattr(getattr(design, 'faulties', None), name, None)
if faulty is not None:
for case in faulty:
kind = FaultyNodeKind.get_from_name(case.case.kind)
if kind in (FaultyNodeKind.Unknown, ):
continue
dict_case = convert_namedtuple_to_dict(case.case)
dict_case['kind'] = kind
faulties.append(dict_case)
if len(faulties) > 0:
faulty_nodes[name] = faulties
for name, config in design.nodes._asdict().items():
for node_name in config.quorum.validators:
nodes[name]['quorum']['validators'].append(
nodes[node_name]['node'])
design_dict = convert_namedtuple_to_dict(design)
if 'audit_waiting' not in design_dict['common']:
design_dict['common']['audit_waiting'] = 1
if 'audit_time_limit' not in design_dict['common']:
design_dict['common']['audit_time_limit'] = 2
design_dict['common']['network_module'] = NETWORK_MODULE
design_dict['nodes'] = list(nodes.values())
design_dict['nodes_by_name'] = nodes
design_dict['faulties'] = faulty_nodes
return convert_dict_to_namedtuple(design_dict)