def test_fail_vote(self):
# GIVEN
peer_manager = PeerManager(conf.LOOPCHAIN_DEFAULT_CHANNEL)
self.__add_peer_to_peer_manager(peer_manager, 3)
peer_manager.add_peer(
PeerInfo("peerid-4",
"groupid-3",
"peerid-4_target",
cert=self.__cert))
peer_manager.add_peer(
PeerInfo("peerid-5",
"groupid-3",
"peerid-5_target",
cert=self.__cert))
vote = Vote("block_hash", peer_manager)
logging.debug("votes: " + str(vote.votes))
# WHEN
vote.add_vote("groupid-1", "peerid-1", conf.TEST_FAIL_VOTE_SIGN)
vote.add_vote("groupid-3", "peerid-4", conf.TEST_FAIL_VOTE_SIGN)
vote.add_vote("groupid-3", "peerid-5", conf.TEST_FAIL_VOTE_SIGN)
vote.get_result("block_hash", 0.51)
# THEN
self.assertTrue(vote.is_failed_vote("block_hash", 0.51))
def test_add_vote_fail_before_add_peer(self):
# GIVEN
peer_manager = PeerManager(conf.LOOPCHAIN_DEFAULT_CHANNEL)
self.__add_peer_to_peer_manager(peer_manager, 3)
peer_manager.add_peer(
PeerInfo("peerid-4",
"groupid-3",
"peerid-4_target",
cert=self.__cert))
peer_manager.add_peer(
PeerInfo("peerid-5",
"groupid-3",
"peerid-5_target",
cert=self.__cert))
vote = Vote("block_hash", peer_manager)
logging.debug("votes: " + str(vote.votes))
# WHEN
vote.add_vote("groupid-1", "peerid-1", None)
vote.add_vote("groupid-3", "peerid-4", None)
ret1 = vote.add_vote("groupid-4", "peerid-1", None)
ret2 = vote.add_vote("groupid-1", "peerid-9", None)
self.assertFalse(ret1)
self.assertFalse(ret2)
# THEN
ret = vote.get_result_detail("block_hash", 0.51)
self.assertEqual(ret[5], 5)
def add_unconfirmed_block(self, block):
"""Block Manager 가 주기적으로 생성한 블럭을 등록한다. 이 블럭은 각 Peer 로 전송되어 Validate vote 를 받아야 한다.
:param block: Block Manager 가 tx 를 수집하여 주기적으로 생성한 블럭, 아직 Block Chain 의 멤버가 아니다.
:return: unconfirmed block 을 식별하기 위한 block_hash (str)
"""
# block 생성자의 peer_id 를 지정한다. (새로 네트워크에 참여하는 피어는 마지막 블럭의 peer_id 를 리더로 간주한다.)
block.peer_id = self.__peer_id
# leader 가 block 에 담을 때 이미 1 투표한 내용으로 생성한다.
vote = Vote(block.block_hash, ObjectManager().peer_service.peer_list)
vote.add_vote(ObjectManager().peer_service.group_id,
ObjectManager().peer_service.peer_id, None)
self.__unconfirmed_blocks[block.block_hash] = [vote, block]
self.__candidate_last_block = block
return block.block_hash
def test_add_vote(self):
# GIVEN
peer_manager = PeerManager()
self.__add_peer_to_peer_manager(peer_manager, 3)
peer_manager.add_peer(PeerInfo("peerid-4", "groupid-3", "peerid-4_target", cert=self.__cert))
peer_manager.add_peer(PeerInfo("peerid-5", "groupid-3", "peerid-5_target", cert=self.__cert))
vote = Vote("block_hash", peer_manager)
logging.debug("votes: " + str(vote.votes))
# WHEN
vote.add_vote("groupid-1", "peerid-1", None)
self.assertFalse(vote.get_result("block_hash", 0.51))
# THEN
vote.add_vote("groupid-2", "peerid-2", None)
self.assertTrue(vote.get_result("block_hash", 0.51))
def test_fail_vote(self):
# GIVEN
peer_manager = PeerManager()
peer_manager.add_peer("peerid-1", "groupid-1", "peerid-1_target")
peer_manager.add_peer("peerid-2", "groupid-2", "peerid-2_target")
peer_manager.add_peer("peerid-3", "groupid-3", "peerid-3_target")
peer_manager.add_peer("peerid-4", "groupid-3", "peerid-4_target")
peer_manager.add_peer("peerid-5", "groupid-3", "peerid-5_target")
vote = Vote("block_hash", peer_manager)
logging.debug("votes: " + str(vote.votes))
# WHEN
vote.add_vote("groupid-1", "peerid-1", conf.TEST_FAIL_VOTE_SIGN)
vote.add_vote("groupid-3", "peerid-4", conf.TEST_FAIL_VOTE_SIGN)
vote.add_vote("groupid-3", "peerid-5", conf.TEST_FAIL_VOTE_SIGN)
vote.get_result("block_hash", 0.51)
# THEN
self.assertTrue(vote.is_failed_vote("block_hash", 0.51))
def test_add_vote_fail_before_add_peer(self):
# GIVEN
peer_manager = PeerManager()
peer_manager.add_peer("peerid-1", "groupid-1", "peerid-1_target")
peer_manager.add_peer("peerid-2", "groupid-2", "peerid-2_target")
peer_manager.add_peer("peerid-3", "groupid-3", "peerid-3_target")
peer_manager.add_peer("peerid-4", "groupid-3", "peerid-4_target")
peer_manager.add_peer("peerid-5", "groupid-3", "peerid-5_target")
vote = Vote("block_hash", peer_manager)
logging.debug("votes: " + str(vote.votes))
# WHEN
vote.add_vote("groupid-1", "peerid-1", None)
vote.add_vote("groupid-3", "peerid-4", None)
ret1 = vote.add_vote("groupid-4", "peerid-1", None)
ret2 = vote.add_vote("groupid-1", "peerid-9", None)
self.assertFalse(ret1)
self.assertFalse(ret2)
# THEN
ret = vote.get_result_detail("block_hash", 0.51)
self.assertEqual(ret[5], 5)
async def consensus(self):
start_time = time.time()
empty_block: Block = None
try:
self._loop = asyncio.get_event_loop()
self._vote_queue = asyncio.Queue(loop=self._loop)
block_builder = self._makeup_block()
if len(block_builder.transactions
) == 0 and not conf.ALLOW_MAKE_EMPTY_BLOCK:
return
peer_manager = ObjectManager().channel_service.peer_manager
last_block = self._blockchain.last_block
block_builder.height = last_block.header.height + 1
block_builder.prev_hash = last_block.header.hash
block_builder.next_leader = Address.fromhex(
peer_manager.get_next_leader_peer().peer_id)
block_builder.peer_private_key = ObjectManager(
).channel_service.peer_auth.peer_private_key
block_builder.confirm_prev_block = (self._made_block_count > 0)
candidate_block = block_builder.build()
candidate_block, invoke_results = ObjectManager(
).channel_service.score_invoke(candidate_block)
block_verifier = BlockVerifier.new("0.1a")
block_verifier.verify(candidate_block, self._blockchain.last_block,
self._blockchain)
logging.info(
f"candidate block height: {candidate_block.header.height}")
logging.info(
f"candidate block hash: {candidate_block.header.hash.hex()}")
logging.info(
f"candidate block next leader: {candidate_block.header.next_leader.hex()}"
)
logging.info(
f"candidate block confirm_prev_block: {candidate_block.body.confirm_prev_block}"
)
vote = Vote(candidate_block.header.hash.hex(),
ObjectManager().channel_service.peer_manager)
vote.add_vote(ChannelProperty().group_id,
ChannelProperty().peer_id, True)
self._blockmanager.broadcast_send_unconfirmed_block(
candidate_block)
success = await self._wait_for_voting(candidate_block, vote)
if not success:
return
self._blockmanager.set_invoke_results(
candidate_block.header.hash.hex(), invoke_results)
self._blockmanager.add_block(candidate_block)
self._made_block_count += 1
pending_tx = self._txQueue.get_item_in_status(
TransactionStatusInQueue.normal,
TransactionStatusInQueue.normal)
if not pending_tx and not conf.ALLOW_MAKE_EMPTY_BLOCK:
block_builder = BlockBuilder.new("0.1a")
block_builder.prev_hash = candidate_block.header.hash
block_builder.height = candidate_block.header.height + 1
block_builder.next_leader = candidate_block.header.next_leader
block_builder.peer_private_key = ObjectManager(
).channel_service.peer_auth.peer_private_key
block_builder.confirm_prev_block = True
empty_block = block_builder.build()
self._blockmanager.broadcast_send_unconfirmed_block(
empty_block)
ObjectManager().channel_service.state_machine.turn_to_peer()
finally:
if not empty_block:
elapsed_time = time.time() - start_time
delay_time = conf.INTERVAL_BLOCKGENERATION - elapsed_time
self._start_consensus_timer(delay_time)
