class ChannelService:
def __init__(self, channel_name, amqp_target, amqp_key):
self.__block_manager: BlockManager = None
self.__score_container: CommonSubprocess = None
self.__score_info: dict = None
self.__peer_auth: Signer = None
self.__peer_manager: PeerManager = None
self.__broadcast_scheduler: BroadcastScheduler = None
self.__radio_station_stub = None
self.__consensus = None
self.__timer_service = TimerService()
self.__node_subscriber: NodeSubscriber = None
self.__channel_infos: dict = None
loggers.get_preset().channel_name = channel_name
loggers.get_preset().update_logger()
channel_queue_name = conf.CHANNEL_QUEUE_NAME_FORMAT.format(
channel_name=channel_name, amqp_key=amqp_key)
self.__inner_service = ChannelInnerService(amqp_target,
channel_queue_name,
conf.AMQP_USERNAME,
conf.AMQP_PASSWORD,
channel_service=self)
logging.info(
f"ChannelService : {channel_name}, Queue : {channel_queue_name}")
ChannelProperty().name = channel_name
ChannelProperty().amqp_target = amqp_target
StubCollection().amqp_key = amqp_key
StubCollection().amqp_target = amqp_target
command_arguments.add_raw_command(command_arguments.Type.Channel,
channel_name)
command_arguments.add_raw_command(command_arguments.Type.AMQPTarget,
amqp_target)
command_arguments.add_raw_command(command_arguments.Type.AMQPKey,
amqp_key)
ObjectManager().channel_service = self
self.__state_machine = ChannelStateMachine(self)
@property
def block_manager(self):
return self.__block_manager
@property
def score_container(self):
return self.__score_container
@property
def score_info(self):
return self.__score_info
@property
def radio_station_stub(self):
return self.__radio_station_stub
@property
def peer_auth(self):
return self.__peer_auth
@property
def peer_manager(self):
return self.__peer_manager
@property
def broadcast_scheduler(self):
return self.__broadcast_scheduler
@property
def consensus(self):
return self.__consensus
@property
def timer_service(self):
return self.__timer_service
@property
def state_machine(self):
return self.__state_machine
@property
def inner_service(self):
return self.__inner_service
def serve(self):
async def _serve():
await StubCollection().create_peer_stub()
channel_name = ChannelProperty().name
self.__channel_infos = (await StubCollection(
).peer_stub.async_task().get_channel_infos())[channel_name]
results = await StubCollection().peer_stub.async_task(
).get_channel_info_detail(channel_name)
await self.init(*results)
self.__timer_service.start()
self.__state_machine.complete_init_components()
logging.info(
f'channel_service: init complete channel: {ChannelProperty().name}, '
f'state({self.__state_machine.state})')
loop = MessageQueueService.loop
# loop.set_debug(True)
loop.create_task(_serve())
loop.add_signal_handler(signal.SIGINT, self.close)
loop.add_signal_handler(signal.SIGTERM, self.close)
try:
loop.run_forever()
finally:
loop.run_until_complete(loop.shutdown_asyncgens())
loop.close()
self.cleanup()
def close(self):
if self.__inner_service:
self.__inner_service.cleanup()
logging.info("Cleanup ChannelInnerService.")
MessageQueueService.loop.stop()
def cleanup(self):
logging.info("Cleanup Channel Resources.")
if self.__block_manager:
self.__block_manager.stop()
self.__block_manager = None
logging.info("Cleanup BlockManager.")
if self.__score_container:
self.__score_container.stop()
self.__score_container.wait()
self.__score_container = None
logging.info("Cleanup ScoreContainer.")
if self.__broadcast_scheduler:
self.__broadcast_scheduler.stop()
self.__broadcast_scheduler.wait()
self.__broadcast_scheduler = None
logging.info("Cleanup BroadcastScheduler.")
if self.__consensus:
self.__consensus.stop()
self.__consensus.wait()
logging.info("Cleanup Consensus.")
if self.__timer_service.is_run():
self.__timer_service.stop()
self.__timer_service.wait()
logging.info("Cleanup TimerService.")
async def init(self, peer_port, peer_target, rest_target,
radio_station_target, peer_id, group_id, node_type,
score_package):
loggers.get_preset().peer_id = peer_id
loggers.get_preset().update_logger()
ChannelProperty().peer_port = peer_port
ChannelProperty().peer_target = peer_target
ChannelProperty().rest_target = rest_target
ChannelProperty().radio_station_target = radio_station_target
ChannelProperty().peer_id = peer_id
ChannelProperty().group_id = group_id
ChannelProperty().node_type = conf.NodeType(node_type)
ChannelProperty().score_package = score_package
self.__peer_manager = PeerManager(ChannelProperty().name)
await self.__init_peer_auth()
self.__init_broadcast_scheduler()
self.__init_block_manager()
await self.__init_score_container()
await self.__inner_service.connect(conf.AMQP_CONNECTION_ATTEMPS,
conf.AMQP_RETRY_DELAY,
exclusive=True)
await self.__init_sub_services()
self.block_manager.init_epoch()
async def __init_network(self):
self.__inner_service.update_sub_services_properties(
node_type=ChannelProperty().node_type.value)
self.__init_radio_station_stub()
if self.is_support_node_function(conf.NodeFunction.Vote):
if conf.ENABLE_REP_RADIO_STATION:
self.connect_to_radio_station()
else:
await self.__load_peers_from_file()
else:
self.__init_node_subscriber()
async def evaluate_network(self):
self.__ready_to_height_sync()
# Do not consider to change peer list by IISS this time.
await self.__select_node_type()
await self.__init_network()
self.__state_machine.block_sync()
async def subscribe_network(self):
if self.is_support_node_function(conf.NodeFunction.Vote):
await self.set_peer_type_in_channel()
else:
await self.subscribe_to_radio_station()
if conf.CONSENSUS_ALGORITHM == conf.ConsensusAlgorithm.lft:
if not self.__consensus.is_run():
self.__consensus.change_epoch(
precommit_block=self.__block_manager.get_blockchain(
).last_block)
self.__consensus.start()
elif conf.ALLOW_MAKE_EMPTY_BLOCK:
if not self.block_manager.block_generation_scheduler.is_run():
self.block_manager.block_generation_scheduler.start()
self.__state_machine.complete_subscribe()
self.start_leader_complain_timer_if_tx_exists()
def update_sub_services_properties(self):
nid = self.block_manager.get_blockchain().find_nid()
self.__inner_service.update_sub_services_properties(nid=int(nid, 16))
def __get_role_switch_block_height(self):
# Currently, only one way role switch is supported from Citizen to Rep
if ChannelProperty().node_type != conf.NodeType.CitizenNode:
return -1
return self.get_channel_option().get('role_switch_block_height', -1)
def __get_node_type_by_peer_list(self):
# FIXME: this is temporary codes. get peer list with IISS API
# IISS peer list include just peer_id and a URL that a server provide peer details
channels = util.load_json_data(conf.CHANNEL_MANAGE_DATA_PATH)
for peer_info in channels[ChannelProperty().name]["peers"]:
if peer_info['id'] == ChannelProperty().peer_id:
return conf.NodeType.CommunityNode
return conf.NodeType.CitizenNode
async def __clean_network(self):
if self.__node_subscriber is not None:
await self.__node_subscriber.close()
self.__node_subscriber: NodeSubscriber = None
self.__timer_service.clean()
peer_ids = set()
for peer_list in self.__peer_manager.peer_list.values():
for peer_id in peer_list.keys():
peer_ids.add(peer_id)
for peer_id in peer_ids:
self.__peer_manager.remove_peer(peer_id)
self.__radio_station_stub = None
async def __select_node_type(self):
# If block height is under zero this node has not synchronized blocks yet.
block_height = self.__block_manager.get_blockchain().block_height
if block_height < 0:
util.logger.debug(
f"Currently, Can't select node type without block height. block height={block_height}"
)
return
switch_block_height = self.__get_role_switch_block_height()
if switch_block_height < 0 or block_height < switch_block_height:
util.logger.debug(
f"Does not need to select node type. role switch block height={switch_block_height}"
)
return
node_type: conf.NodeType = self.__get_node_type_by_peer_list()
if node_type == ChannelProperty().node_type:
util.logger.info(
f"Node type equals previous note type ({node_type}). force={force}"
)
return
util.logger.info(f"Selected node type {node_type}")
ChannelProperty().node_type = node_type
await StubCollection().peer_stub.async_task().change_node_type(
node_type.value)
def reset_network_by_block_height(self, height):
if height == self.__get_role_switch_block_height():
self.__state_machine.switch_role()
async def reset_network(self):
util.logger.info("Reset network")
await self.__clean_network()
self.__state_machine.evaluate_network()
async def __init_peer_auth(self):
try:
node_key: bytes = await StubCollection().peer_stub.async_task(
).get_node_key(ChannelProperty().name)
self.__peer_auth = Signer.from_prikey(node_key)
except KeyError:
self.__peer_auth = Signer.from_channel(ChannelProperty().name)
except Exception as e:
logging.exception(f"peer auth init fail cause : {e}")
util.exit_and_msg(f"peer auth init fail cause : {e}")
def __init_block_manager(self):
logging.debug(
f"__load_block_manager_each channel({ChannelProperty().name})")
try:
self.__block_manager = BlockManager(
name="loopchain.peer.BlockManager",
channel_manager=self,
peer_id=ChannelProperty().peer_id,
channel_name=ChannelProperty().name,
level_db_identity=ChannelProperty().peer_target)
except leveldb.LevelDBError as e:
util.exit_and_msg("LevelDBError(" + str(e) + ")")
def __init_broadcast_scheduler(self):
scheduler = BroadcastSchedulerFactory.new(
channel=ChannelProperty().name,
self_target=ChannelProperty().peer_target)
scheduler.start()
self.__broadcast_scheduler = scheduler
scheduler.schedule_job(BroadcastCommand.SUBSCRIBE,
ChannelProperty().peer_target,
block=True,
block_timeout=conf.TIMEOUT_FOR_FUTURE)
def __init_radio_station_stub(self):
if self.is_support_node_function(conf.NodeFunction.Vote):
if conf.ENABLE_REP_RADIO_STATION:
self.__radio_station_stub = StubManager.get_stub_manager_to_server(
ChannelProperty().radio_station_target,
loopchain_pb2_grpc.RadioStationStub,
conf.CONNECTION_RETRY_TIMEOUT_TO_RS,
ssl_auth_type=conf.GRPC_SSL_TYPE)
else:
self.__radio_station_stub = RestStubManager(
ChannelProperty().radio_station_target,
ChannelProperty().name)
async def __init_score_container(self):
"""create score container and save score_info and score_stub
"""
for i in range(conf.SCORE_LOAD_RETRY_TIMES):
try:
self.__score_info = await self.__run_score_container()
except BaseException as e:
util.logger.spam(
f"channel_manager:load_score_container_each score_info load fail retry({i})"
)
logging.error(e)
traceback.print_exc()
time.sleep(conf.SCORE_LOAD_RETRY_INTERVAL
) # This blocking main thread is intended.
else:
break
async def __init_sub_services(self):
self.__inner_service.init_sub_services()
await StubCollection().create_channel_tx_creator_stub(
ChannelProperty().name)
await StubCollection().create_channel_tx_receiver_stub(
ChannelProperty().name)
def __init_node_subscriber(self):
self.__node_subscriber = NodeSubscriber(
channel=ChannelProperty().name,
rs_target=ChannelProperty().radio_station_target)
async def __run_score_container(self):
if conf.RUN_ICON_IN_LAUNCHER:
process_args = [
'python3', '-m', 'loopchain', 'score', '--channel',
ChannelProperty().name, '--score_package',
ChannelProperty().score_package
]
process_args += command_arguments.get_raw_commands_by_filter(
command_arguments.Type.AMQPTarget,
command_arguments.Type.AMQPKey, command_arguments.Type.Develop,
command_arguments.Type.ConfigurationFilePath,
command_arguments.Type.RadioStationTarget)
self.__score_container = CommonSubprocess(process_args)
await StubCollection().create_icon_score_stub(ChannelProperty().name)
await StubCollection().icon_score_stubs[ChannelProperty().name
].connect()
await StubCollection().icon_score_stubs[ChannelProperty().name
].async_task().hello()
return None
async def __load_score(self):
channel_name = ChannelProperty().name
score_package_name = ChannelProperty().score_package
util.logger.spam(f"peer_service:__load_score --init--")
logging.info("LOAD SCORE AND CONNECT TO SCORE SERVICE!")
params = dict()
params[message_code.MetaParams.ScoreLoad.
repository_path] = conf.DEFAULT_SCORE_REPOSITORY_PATH
params[message_code.MetaParams.ScoreLoad.
score_package] = score_package_name
params[
message_code.MetaParams.ScoreLoad.base] = conf.DEFAULT_SCORE_BASE
params[message_code.MetaParams.ScoreLoad.peer_id] = ChannelProperty(
).peer_id
meta = json.dumps(params)
logging.debug(f"load score params : {meta}")
util.logger.spam(f"peer_service:__load_score --1--")
score_stub = StubCollection().score_stubs[channel_name]
response = await score_stub.async_task().score_load(meta)
logging.debug("try score load on score service: " + str(response))
if not response:
return None
if response.code != message_code.Response.success:
util.exit_and_msg("Fail Get Score from Score Server...")
return None
logging.debug("Get Score from Score Server...")
score_info = json.loads(response.meta)
logging.info("LOAD SCORE DONE!")
util.logger.spam(f"peer_service:__load_score --end--")
return score_info
async def __load_peers_from_file(self):
channel_info = await StubCollection().peer_stub.async_task(
).get_channel_infos()
for peer_info in channel_info[ChannelProperty().name]["peers"]:
self.__peer_manager.add_peer(peer_info)
self.__broadcast_scheduler.schedule_job(BroadcastCommand.SUBSCRIBE,
peer_info["peer_target"])
self.show_peers()
def is_support_node_function(self, node_function):
return conf.NodeType.is_support_node_function(
node_function,
ChannelProperty().node_type)
def get_channel_option(self) -> dict:
channel_option = conf.CHANNEL_OPTION
return channel_option[ChannelProperty().name]
def get_channel_infos(self) -> dict:
return self.__channel_infos
def get_rep_ids(self) -> list:
return [
ExternalAddress.fromhex_address(peer.get('id'),
allow_malformed=True)
for peer in self.get_channel_infos()['peers']
]
def generate_genesis_block(self):
blockchain = self.block_manager.get_blockchain()
if blockchain.block_height > -1:
logging.debug("genesis block was already generated")
return
reps = self.get_rep_ids()
blockchain.generate_genesis_block(reps)
def connect_to_radio_station(self, is_reconnect=False):
response = self.__radio_station_stub.call_in_times(
method_name="ConnectPeer",
message=loopchain_pb2.ConnectPeerRequest(
channel=ChannelProperty().name,
peer_object=b'',
peer_id=ChannelProperty().peer_id,
peer_target=ChannelProperty().peer_target,
group_id=ChannelProperty().group_id),
retry_times=conf.CONNECTION_RETRY_TIMES_TO_RS,
is_stub_reuse=True,
timeout=conf.CONNECTION_TIMEOUT_TO_RS)
# start next ConnectPeer timer
self.__timer_service.add_timer_convenient(
timer_key=TimerService.TIMER_KEY_CONNECT_PEER,
duration=conf.CONNECTION_RETRY_TIMER,
callback=self.connect_to_radio_station,
callback_kwargs={"is_reconnect": True})
if is_reconnect:
return
if response and response.status == message_code.Response.success:
try:
peer_list_data = PeerListData.load(response.peer_list)
except Exception as e:
traceback.print_exc()
logging.error(
f"Invalid peer list. Check your Radio Station. exception={e}"
)
return
self.__peer_manager.set_peer_list(peer_list_data)
peers, peer_list = self.__peer_manager.get_peers_for_debug()
logging.debug("peer list update: " + peers)
# add connected peer to processes audience
for each_peer in peer_list:
util.logger.spam(
f"peer_service:connect_to_radio_station peer({each_peer.target}-{each_peer.status})"
)
if each_peer.status == PeerStatus.connected:
self.__broadcast_scheduler.schedule_job(
BroadcastCommand.SUBSCRIBE, each_peer.target)
def __subscribe_to_peer_list(self):
peer_object = self.peer_manager.get_peer(ChannelProperty().peer_id)
peer_request = loopchain_pb2.PeerRequest(
channel=ChannelProperty().name,
peer_target=ChannelProperty().peer_target,
peer_id=ChannelProperty().peer_id,
group_id=ChannelProperty().group_id,
node_type=ChannelProperty().node_type,
peer_order=peer_object.order)
self.__broadcast_scheduler.schedule_broadcast("Subscribe",
peer_request)
async def subscribe_to_radio_station(self):
await self.__subscribe_call_to_stub(self.__radio_station_stub,
loopchain_pb2.PEER)
async def subscribe_to_peer(self, peer_id, peer_type):
peer = self.peer_manager.get_peer(peer_id)
peer_stub = self.peer_manager.get_peer_stub_manager(peer)
await self.__subscribe_call_to_stub(peer_stub, peer_type)
self.__broadcast_scheduler.schedule_job(BroadcastCommand.SUBSCRIBE,
peer_stub.target)
async def __subscribe_call_to_stub(self, peer_stub, peer_type):
if self.is_support_node_function(conf.NodeFunction.Vote):
await peer_stub.call_async(
"Subscribe",
loopchain_pb2.PeerRequest(
channel=ChannelProperty().name,
peer_target=ChannelProperty().peer_target,
peer_type=peer_type,
peer_id=ChannelProperty().peer_id,
group_id=ChannelProperty().group_id,
node_type=ChannelProperty().node_type),
)
else:
await self.__subscribe_call_from_citizen()
async def __subscribe_call_from_citizen(self):
def _handle_exception(future: asyncio.Future):
logging.debug(
f"error: {type(future.exception())}, {str(future.exception())}"
)
if ChannelProperty().node_type != conf.NodeType.CitizenNode:
logging.debug(f"This node is not Citizen anymore.")
return
elif isinstance(future.exception(), ConnectionError):
logging.warning(f"Waiting for next subscribe request...")
if self.__state_machine.state != "SubscribeNetwork":
self.__state_machine.subscribe_network()
subscribe_event = asyncio.Event()
util.logger.spam(
f"try subscribe_call_by_citizen target({ChannelProperty().rest_target})"
)
# try websocket connection, and handle exception in callback
asyncio.ensure_future(
self.__node_subscriber.subscribe(
block_height=self.block_manager.get_blockchain().block_height,
event=subscribe_event)).add_done_callback(_handle_exception)
await subscribe_event.wait()
def shutdown_peer(self, **kwargs):
logging.debug(f"channel_service:shutdown_peer")
StubCollection().peer_stub.sync_task().stop(message=kwargs['message'])
def set_peer_type(self, peer_type):
"""Set peer type when peer init only
:param peer_type:
:return:
"""
self.__block_manager.set_peer_type(peer_type)
def save_peer_manager(self, peer_manager):
"""peer_list 를 leveldb 에 저장한다.
:param peer_manager:
"""
level_db_key_name = str.encode(conf.LEVEL_DB_KEY_FOR_PEER_LIST)
try:
dump = peer_manager.dump()
level_db = self.__block_manager.get_level_db()
level_db.Put(level_db_key_name, dump)
except AttributeError as e:
logging.warning("Fail Save Peer_list: " + str(e))
async def set_peer_type_in_channel(self):
peer_type = loopchain_pb2.PEER
blockchain = self.block_manager.get_blockchain()
last_block = blockchain.last_unconfirmed_block or blockchain.last_block
leader_id = None
if last_block and last_block.header.next_leader is not None:
leader_id = last_block.header.next_leader.hex_hx()
peer = self.peer_manager.get_peer(leader_id)
if peer is None:
leader_id = None
else:
self.peer_manager.set_leader_peer(peer)
if leader_id is None:
leader_id = self.peer_manager.get_leader_peer().peer_id
logging.debug(
f"channel({ChannelProperty().name}) peer_leader: {leader_id}")
logger_preset = loggers.get_preset()
if ChannelProperty().peer_id == leader_id:
logger_preset.is_leader = True
logging.debug(
f"Set Peer Type Leader! channel({ChannelProperty().name})")
peer_type = loopchain_pb2.BLOCK_GENERATOR
else:
logger_preset.is_leader = False
logger_preset.update_logger()
if conf.CONSENSUS_ALGORITHM == conf.ConsensusAlgorithm.lft:
self.consensus.leader_id = leader_id
self.block_manager.set_peer_type(peer_type)
def __ready_to_height_sync(self):
blockchain = self.block_manager.get_blockchain()
blockchain.init_blockchain()
if blockchain.block_height == -1 and 'genesis_data_path' in conf.CHANNEL_OPTION[
ChannelProperty().name]:
self.generate_genesis_block()
elif blockchain.block_height > -1:
self.block_manager.rebuild_block()
def show_peers(self):
logging.debug(f"peer_service:show_peers ({ChannelProperty().name}): ")
for peer in self.peer_manager.get_IP_of_peers_in_group():
logging.debug("peer_target: " + peer)
def reset_leader(self, new_leader_id, block_height=0, complained=False):
"""
:param new_leader_id:
:param block_height:
:param complained:
:return:
"""
if self.peer_manager.get_leader_id(conf.ALL_GROUP_ID) == new_leader_id:
return
utils.logger.info(
f"RESET LEADER channel({ChannelProperty().name}) leader_id({new_leader_id}), "
f"complained={complained}")
leader_peer = self.peer_manager.get_peer(new_leader_id, None)
if block_height > 0 and block_height != self.block_manager.get_blockchain(
).last_block.header.height + 1:
util.logger.warning(
f"height behind peer can not take leader role. block_height({block_height}), "
f"last_block.header.height("
f"{self.block_manager.get_blockchain().last_block.header.height})"
)
return
if leader_peer is None:
logging.warning(
f"in peer_service:reset_leader There is no peer by peer_id({new_leader_id})"
)
return
util.logger.spam(
f"peer_service:reset_leader target({leader_peer.target}), complained={complained}"
)
self_peer_object = self.peer_manager.get_peer(
ChannelProperty().peer_id)
self.peer_manager.set_leader_peer(leader_peer, None)
if complained:
self.block_manager.epoch.new_round(leader_peer.peer_id)
else:
self.block_manager.epoch = Epoch.new_epoch(leader_peer.peer_id)
logging.info(
f"Epoch height({self.block_manager.epoch.height}), leader ({self.block_manager.epoch.leader_id})"
)
if self_peer_object.peer_id == leader_peer.peer_id:
logging.debug("Set Peer Type Leader!")
peer_type = loopchain_pb2.BLOCK_GENERATOR
self.state_machine.turn_to_leader()
else:
logging.debug("Set Peer Type Peer!")
peer_type = loopchain_pb2.PEER
self.state_machine.turn_to_peer()
self.block_manager.set_peer_type(peer_type)
def set_new_leader(self, new_leader_id, block_height=0):
logging.info(
f"SET NEW LEADER channel({ChannelProperty().name}) leader_id({new_leader_id})"
)
# complained_leader = self.peer_manager.get_leader_peer()
leader_peer = self.peer_manager.get_peer(new_leader_id, None)
if block_height > 0 and block_height != self.block_manager.get_blockchain(
).last_block.height + 1:
logging.warning(f"height behind peer can not take leader role.")
return
if leader_peer is None:
logging.warning(
f"in channel_service:set_new_leader::There is no peer by peer_id({new_leader_id})"
)
return
util.logger.spam(
f"channel_service:set_new_leader::leader_target({leader_peer.target})"
)
self_peer_object = self.peer_manager.get_peer(
ChannelProperty().peer_id)
self.peer_manager.set_leader_peer(leader_peer, None)
peer_leader = self.peer_manager.get_leader_peer()
if self_peer_object.target == peer_leader.target:
loggers.get_preset().is_leader = True
loggers.get_preset().update_logger()
logging.debug("I'm Leader Peer!")
else:
loggers.get_preset().is_leader = False
loggers.get_preset().update_logger()
logging.debug("I'm general Peer!")
# 새 leader 에게 subscribe 하기
# await self.subscribe_to_radio_station()
# await self.subscribe_to_peer(peer_leader.peer_id, loopchain_pb2.BLOCK_GENERATOR)
def genesis_invoke(self, block: Block) -> ('Block', dict):
method = "icx_sendTransaction"
transactions = []
for tx in block.body.transactions.values():
tx_serializer = TransactionSerializer.new(
tx.version,
self.block_manager.get_blockchain().tx_versioner)
transaction = {
"method": method,
"params": {
"txHash": tx.hash.hex()
},
"genesisData": tx_serializer.to_full_data(tx)
}
transactions.append(transaction)
request = {
'block': {
'blockHeight': block.header.height,
'blockHash': block.header.hash.hex(),
'timestamp': block.header.timestamp
},
'transactions': transactions
}
request = convert_params(request, ParamType.invoke)
stub = StubCollection().icon_score_stubs[ChannelProperty().name]
response = stub.sync_task().invoke(request)
response_to_json_query(response)
tx_receipts = response["txResults"]
block_builder = BlockBuilder.from_new(
block,
self.block_manager.get_blockchain().tx_versioner)
block_builder.reset_cache()
block_builder.peer_id = block.header.peer_id
block_builder.signature = block.header.signature
block_builder.commit_state = {
ChannelProperty().name: response['stateRootHash']
}
block_builder.state_hash = Hash32(
bytes.fromhex(response['stateRootHash']))
block_builder.receipts = tx_receipts
block_builder.reps = self.get_rep_ids()
new_block = block_builder.build()
return new_block, tx_receipts
def score_invoke(self, _block: Block) -> dict or None:
method = "icx_sendTransaction"
transactions = []
for tx in _block.body.transactions.values():
tx_serializer = TransactionSerializer.new(
tx.version,
self.block_manager.get_blockchain().tx_versioner)
transaction = {
"method": method,
"params": tx_serializer.to_full_data(tx)
}
transactions.append(transaction)
request = {
'block': {
'blockHeight':
_block.header.height,
'blockHash':
_block.header.hash.hex(),
'prevBlockHash':
_block.header.prev_hash.hex()
if _block.header.prev_hash else '',
'timestamp':
_block.header.timestamp
},
'transactions': transactions
}
request = convert_params(request, ParamType.invoke)
stub = StubCollection().icon_score_stubs[ChannelProperty().name]
response = stub.sync_task().invoke(request)
response_to_json_query(response)
tx_receipts = response["txResults"]
block_builder = BlockBuilder.from_new(
_block,
self.__block_manager.get_blockchain().tx_versioner)
block_builder.reset_cache()
block_builder.peer_id = _block.header.peer_id
block_builder.signature = _block.header.signature
block_builder.commit_state = {
ChannelProperty().name: response['stateRootHash']
}
block_builder.state_hash = Hash32(
bytes.fromhex(response['stateRootHash']))
block_builder.receipts = tx_receipts
block_builder.reps = self.get_rep_ids()
new_block = block_builder.build()
return new_block, tx_receipts
def score_change_block_hash(self, block_height, old_block_hash,
new_block_hash):
change_hash_info = json.dumps({
"block_height": block_height,
"old_block_hash": old_block_hash,
"new_block_hash": new_block_hash
})
stub = StubCollection().score_stubs[ChannelProperty().name]
stub.sync_task().change_block_hash(change_hash_info)
def score_write_precommit_state(self, block: Block):
logging.debug(
f"call score commit {ChannelProperty().name} {block.header.height} {block.header.hash.hex()}"
)
request = {
"blockHeight": block.header.height,
"blockHash": block.header.hash.hex(),
}
request = convert_params(request, ParamType.write_precommit_state)
stub = StubCollection().icon_score_stubs[ChannelProperty().name]
stub.sync_task().write_precommit_state(request)
return True
def score_remove_precommit_state(self, block: Block):
invoke_fail_info = json.dumps({
"block_height": block.height,
"block_hash": block.block_hash
})
stub = StubCollection().score_stubs[ChannelProperty().name]
stub.sync_task().remove_precommit_state(invoke_fail_info)
return True
def reset_leader_complain_timer(self):
if self.__timer_service.get_timer(
TimerService.TIMER_KEY_LEADER_COMPLAIN):
self.stop_leader_complain_timer()
self.start_leader_complain_timer()
def start_leader_complain_timer_if_tx_exists(self):
if not self.block_manager.get_tx_queue().is_empty_in_status(
TransactionStatusInQueue.normal):
util.logger.debug(
"Start leader complain timer because unconfirmed tx exists.")
self.start_leader_complain_timer()
def start_leader_complain_timer(self, duration=None):
if not duration:
duration = self.block_manager.epoch.complain_duration
# util.logger.spam(
# f"start_leader_complain_timer in channel service. ({self.block_manager.epoch.round}/{duration})")
if self.state_machine.state not in ("BlockGenerate", "BlockSync",
"Watch"):
self.__timer_service.add_timer_convenient(
timer_key=TimerService.TIMER_KEY_LEADER_COMPLAIN,
duration=duration,
is_repeat=True,
callback=self.state_machine.leader_complain)
def stop_leader_complain_timer(self):
util.logger.spam(f"stop_leader_complain_timer in channel service.")
self.__timer_service.stop_timer(TimerService.TIMER_KEY_LEADER_COMPLAIN)
def start_subscribe_timer(self):
self.__timer_service.add_timer_convenient(
timer_key=TimerService.TIMER_KEY_SUBSCRIBE,
duration=conf.SUBSCRIBE_RETRY_TIMER,
is_repeat=True,
callback=self.subscribe_network)
def stop_subscribe_timer(self):
self.__timer_service.stop_timer(TimerService.TIMER_KEY_SUBSCRIBE)
def start_shutdown_timer(self):
error = f"Shutdown by Subscribe retry timeout({conf.SHUTDOWN_TIMER} sec)"
self.__timer_service.add_timer_convenient(
timer_key=TimerService.TIMER_KEY_SHUTDOWN_WHEN_FAIL_SUBSCRIBE,
duration=conf.SHUTDOWN_TIMER,
callback=self.shutdown_peer,
callback_kwargs={"message": error})
def stop_shutdown_timer(self):
self.__timer_service.stop_timer(
TimerService.TIMER_KEY_SHUTDOWN_WHEN_FAIL_SUBSCRIBE)
class ChannelService:
def __init__(self, channel_name, amqp_target, amqp_key):
self.__block_manager: BlockManager = None
self.__score_container: CommonSubprocess = None
self.__score_info: dict = None
self.__peer_auth: Signer = None
self.__peer_manager: PeerManager = None
self.__broadcast_scheduler: BroadcastScheduler = None
self.__radio_station_stub = None
self.__consensus = None
# self.__proposer: Proposer = None
# self.__acceptor: Acceptor = None
self.__timer_service = TimerService()
self.__node_subscriber: NodeSubscriber = None
loggers.get_preset().channel_name = channel_name
loggers.get_preset().update_logger()
channel_queue_name = conf.CHANNEL_QUEUE_NAME_FORMAT.format(
channel_name=channel_name, amqp_key=amqp_key)
self.__inner_service = ChannelInnerService(amqp_target,
channel_queue_name,
conf.AMQP_USERNAME,
conf.AMQP_PASSWORD,
channel_service=self)
logging.info(
f"ChannelService : {channel_name}, Queue : {channel_queue_name}")
ChannelProperty().name = channel_name
ChannelProperty().amqp_target = amqp_target
StubCollection().amqp_key = amqp_key
StubCollection().amqp_target = amqp_target
command_arguments.add_raw_command(command_arguments.Type.Channel,
channel_name)
command_arguments.add_raw_command(command_arguments.Type.AMQPTarget,
amqp_target)
command_arguments.add_raw_command(command_arguments.Type.AMQPKey,
amqp_key)
ObjectManager().channel_service = self
self.__state_machine = ChannelStateMachine(self)
@property
def block_manager(self):
return self.__block_manager
@property
def score_container(self):
return self.__score_container
@property
def score_info(self):
return self.__score_info
@property
def radio_station_stub(self):
return self.__radio_station_stub
@property
def peer_auth(self):
return self.__peer_auth
@property
def peer_manager(self):
return self.__peer_manager
@property
def broadcast_scheduler(self):
return self.__broadcast_scheduler
@property
def consensus(self):
return self.__consensus
@property
def acceptor(self):
return self.__acceptor
@property
def timer_service(self):
return self.__timer_service
@property
def state_machine(self):
return self.__state_machine
@property
def inner_service(self):
return self.__inner_service
def serve(self):
async def _serve():
await StubCollection().create_peer_stub()
results = await StubCollection().peer_stub.async_task(
).get_channel_info_detail(ChannelProperty().name)
await self.init(*results)
self.__timer_service.start()
self.__state_machine.complete_init_components()
logging.info(
f'channel_service: init complete channel: {ChannelProperty().name}, '
f'state({self.__state_machine.state})')
loop = MessageQueueService.loop
loop.create_task(_serve())
loop.add_signal_handler(signal.SIGINT, self.close)
loop.add_signal_handler(signal.SIGTERM, self.close)
try:
loop.run_forever()
finally:
loop.run_until_complete(loop.shutdown_asyncgens())
loop.close()
self.cleanup()
def close(self):
MessageQueueService.loop.stop()
def cleanup(self):
logging.info("Cleanup Channel Resources.")
if self.__block_manager:
self.__block_manager.stop()
self.__block_manager = None
logging.info("Cleanup BlockManager.")
if self.__score_container:
self.__score_container.stop()
self.__score_container.wait()
self.__score_container = None
logging.info("Cleanup ScoreContainer.")
if self.__broadcast_scheduler:
self.__broadcast_scheduler.stop()
self.__broadcast_scheduler.wait()
self.__broadcast_scheduler = None
logging.info("Cleanup BroadcastScheduler.")
if self.__consensus:
self.__consensus.stop()
self.__consensus.wait()
logging.info("Cleanup Consensus.")
if self.__timer_service.is_run():
self.__timer_service.stop()
self.__timer_service.wait()
logging.info("Cleanup TimerService.")
async def init(self, peer_port, peer_target, rest_target,
radio_station_target, peer_id, group_id, node_type,
score_package):
loggers.get_preset().peer_id = peer_id
loggers.get_preset().update_logger()
ChannelProperty().peer_port = peer_port
ChannelProperty().peer_target = peer_target
ChannelProperty().rest_target = rest_target
ChannelProperty().radio_station_target = radio_station_target
ChannelProperty().peer_id = peer_id
ChannelProperty().group_id = group_id
ChannelProperty().node_type = conf.NodeType(node_type)
ChannelProperty().score_package = score_package
self.__peer_manager = PeerManager(ChannelProperty().name)
self.__init_peer_auth()
self.__init_broadcast_scheduler()
self.__init_block_manager()
self.__init_radio_station_stub()
await self.__init_score_container()
await self.__inner_service.connect(conf.AMQP_CONNECTION_ATTEMPS,
conf.AMQP_RETRY_DELAY,
exclusive=True)
# if conf.CONSENSUS_ALGORITHM == conf.ConsensusAlgorithm.lft:
# util.logger.spam(f"init consensus !")
# # load consensus
# self.__init_consensus()
# # load proposer
# self.__init_proposer(peer_id=peer_id)
# # load acceptor
# self.__init_acceptor(peer_id=peer_id)
if self.is_support_node_function(conf.NodeFunction.Vote):
if conf.ENABLE_REP_RADIO_STATION:
self.connect_to_radio_station()
else:
await self.__load_peers_from_file()
# subscribe to other peers
self.__subscribe_to_peer_list()
# broadcast AnnounceNewPeer to other peers
# If allow broadcast AnnounceNewPeer here, complained peer can be leader again.
else:
self.__init_node_subscriber()
self.block_manager.init_epoch()
async def evaluate_network(self):
await self.set_peer_type_in_channel()
if self.block_manager.peer_type == loopchain_pb2.BLOCK_GENERATOR:
self.__state_machine.subscribe_network()
else:
self.__state_machine.block_sync()
async def subscribe_network(self):
# Subscribe to radiostation and block_sync_target_stub
if self.is_support_node_function(conf.NodeFunction.Vote):
if conf.ENABLE_REP_RADIO_STATION:
await self.subscribe_to_radio_station()
if self.block_manager.peer_type == loopchain_pb2.PEER:
await self.__subscribe_call_to_stub(
peer_stub=self.block_manager.subscribe_target_peer_stub,
peer_type=loopchain_pb2.PEER)
else:
await self.subscribe_to_radio_station()
self.generate_genesis_block()
if conf.CONSENSUS_ALGORITHM == conf.ConsensusAlgorithm.lft:
if not self.__consensus.is_run():
self.__consensus.change_epoch(
precommit_block=self.__block_manager.get_blockchain(
).last_block)
self.__consensus.start()
elif conf.ALLOW_MAKE_EMPTY_BLOCK:
if not self.block_manager.block_generation_scheduler.is_run():
self.block_manager.block_generation_scheduler.start()
self.__state_machine.complete_sync()
def __init_peer_auth(self):
try:
self.__peer_auth = Signer.from_channel(ChannelProperty().name)
except Exception as e:
logging.exception(f"peer auth init fail cause : {e}")
util.exit_and_msg(f"peer auth init fail cause : {e}")
def __init_block_manager(self):
logging.debug(
f"__load_block_manager_each channel({ChannelProperty().name})")
try:
self.__block_manager = BlockManager(
name="loopchain.peer.BlockManager",
channel_manager=self,
peer_id=ChannelProperty().peer_id,
channel_name=ChannelProperty().name,
level_db_identity=ChannelProperty().peer_target)
except leveldb.LevelDBError as e:
util.exit_and_msg("LevelDBError(" + str(e) + ")")
# def __init_consensus(self):
# consensus = Consensus(self, ChannelProperty().name)
# self.__consensus = consensus
# self.__block_manager.consensus = consensus
# consensus.register_subscriber(self.__block_manager)
#
# def __init_proposer(self, peer_id: str):
# proposer = Proposer(
# name="loopchain.consensus.Proposer",
# peer_id=peer_id,
# channel=ChannelProperty().name,
# channel_service=self
# )
# self.__consensus.register_subscriber(proposer)
# self.__proposer = proposer
#
# def __init_acceptor(self, peer_id: str):
# acceptor = Acceptor(
# name="loopchain.consensus.Acceptor",
# consensus=self.__consensus,
# peer_id=peer_id,
# channel=ChannelProperty().name,
# channel_service=self
# )
# self.__consensus.register_subscriber(acceptor)
# self.__acceptor = acceptor
def __init_broadcast_scheduler(self):
scheduler = BroadcastScheduler(
channel=ChannelProperty().name,
self_target=ChannelProperty().peer_target)
scheduler.start()
self.__broadcast_scheduler = scheduler
future = scheduler.schedule_job(BroadcastCommand.SUBSCRIBE,
ChannelProperty().peer_target)
future.result(conf.TIMEOUT_FOR_FUTURE)
def __init_radio_station_stub(self):
if self.is_support_node_function(conf.NodeFunction.Vote):
if conf.ENABLE_REP_RADIO_STATION:
self.__radio_station_stub = StubManager.get_stub_manager_to_server(
ChannelProperty().radio_station_target,
loopchain_pb2_grpc.RadioStationStub,
conf.CONNECTION_RETRY_TIMEOUT_TO_RS,
ssl_auth_type=conf.GRPC_SSL_TYPE)
else:
self.__radio_station_stub = RestStubManager(
ChannelProperty().radio_station_target,
ChannelProperty().name)
async def __init_score_container(self):
"""create score container and save score_info and score_stub
"""
for i in range(conf.SCORE_LOAD_RETRY_TIMES):
try:
self.__score_info = await self.__run_score_container()
except BaseException as e:
util.logger.spam(
f"channel_manager:load_score_container_each score_info load fail retry({i})"
)
logging.error(e)
traceback.print_exc()
time.sleep(conf.SCORE_LOAD_RETRY_INTERVAL
) # This blocking main thread is intended.
else:
break
def __init_node_subscriber(self):
self.__node_subscriber = NodeSubscriber(
channel=ChannelProperty().name,
rs_target=ChannelProperty().radio_station_target)
async def __run_score_container(self):
if not conf.USE_EXTERNAL_SCORE or conf.EXTERNAL_SCORE_RUN_IN_LAUNCHER:
process_args = [
'python3', '-m', 'loopchain', 'score', '--channel',
ChannelProperty().name, '--score_package',
ChannelProperty().score_package
]
process_args += command_arguments.get_raw_commands_by_filter(
command_arguments.Type.AMQPTarget,
command_arguments.Type.AMQPKey, command_arguments.Type.Develop,
command_arguments.Type.ConfigurationFilePath,
command_arguments.Type.RadioStationTarget)
self.__score_container = CommonSubprocess(process_args)
await StubCollection().create_icon_score_stub(ChannelProperty().name)
await StubCollection().icon_score_stubs[ChannelProperty().name
].connect()
await StubCollection().icon_score_stubs[ChannelProperty().name
].async_task().hello()
return None
async def __load_score(self):
channel_name = ChannelProperty().name
score_package_name = ChannelProperty().score_package
util.logger.spam(f"peer_service:__load_score --init--")
logging.info("LOAD SCORE AND CONNECT TO SCORE SERVICE!")
params = dict()
params[message_code.MetaParams.ScoreLoad.
repository_path] = conf.DEFAULT_SCORE_REPOSITORY_PATH
params[message_code.MetaParams.ScoreLoad.
score_package] = score_package_name
params[
message_code.MetaParams.ScoreLoad.base] = conf.DEFAULT_SCORE_BASE
params[message_code.MetaParams.ScoreLoad.peer_id] = ChannelProperty(
).peer_id
meta = json.dumps(params)
logging.debug(f"load score params : {meta}")
util.logger.spam(f"peer_service:__load_score --1--")
score_stub = StubCollection().score_stubs[channel_name]
response = await score_stub.async_task().score_load(meta)
logging.debug("try score load on score service: " + str(response))
if not response:
return None
if response.code != message_code.Response.success:
util.exit_and_msg("Fail Get Score from Score Server...")
return None
logging.debug("Get Score from Score Server...")
score_info = json.loads(response.meta)
logging.info("LOAD SCORE DONE!")
util.logger.spam(f"peer_service:__load_score --end--")
return score_info
async def __load_peers_from_file(self):
channel_info = await StubCollection().peer_stub.async_task(
).get_channel_infos()
for peer_info in channel_info[ChannelProperty().name]["peers"]:
self.__peer_manager.add_peer(peer_info)
self.__broadcast_scheduler.schedule_job(BroadcastCommand.SUBSCRIBE,
peer_info["peer_target"])
self.show_peers()
def is_support_node_function(self, node_function):
return conf.NodeType.is_support_node_function(
node_function,
ChannelProperty().node_type)
def get_channel_option(self) -> dict:
channel_option = conf.CHANNEL_OPTION
return channel_option[ChannelProperty().name]
def generate_genesis_block(self):
if self.block_manager.peer_type != loopchain_pb2.BLOCK_GENERATOR:
return
block_chain = self.block_manager.get_blockchain()
if block_chain.block_height > -1:
logging.debug("genesis block was already generated")
return
block_chain.generate_genesis_block()
def connect_to_radio_station(self, is_reconnect=False):
response = self.__radio_station_stub.call_in_times(
method_name="ConnectPeer",
message=loopchain_pb2.ConnectPeerRequest(
channel=ChannelProperty().name,
peer_object=b'',
peer_id=ChannelProperty().peer_id,
peer_target=ChannelProperty().peer_target,
group_id=ChannelProperty().group_id),
retry_times=conf.CONNECTION_RETRY_TIMES_TO_RS,
is_stub_reuse=True,
timeout=conf.CONNECTION_TIMEOUT_TO_RS)
# start next ConnectPeer timer
self.__timer_service.add_timer_convenient(
timer_key=TimerService.TIMER_KEY_CONNECT_PEER,
duration=conf.CONNECTION_RETRY_TIMER,
callback=self.connect_to_radio_station,
callback_kwargs={"is_reconnect": True})
if is_reconnect:
return
if response and response.status == message_code.Response.success:
peer_list_data = pickle.loads(response.peer_list)
self.__peer_manager.load(peer_list_data, False)
peers, peer_list = self.__peer_manager.get_peers_for_debug()
logging.debug("peer list update: " + peers)
# add connected peer to processes audience
for each_peer in peer_list:
util.logger.spam(
f"peer_service:connect_to_radio_station peer({each_peer.target}-{each_peer.status})"
)
if each_peer.status == PeerStatus.connected:
self.__broadcast_scheduler.schedule_job(
BroadcastCommand.SUBSCRIBE, each_peer.target)
def __subscribe_to_peer_list(self):
peer_object = self.peer_manager.get_peer(ChannelProperty().peer_id)
peer_request = loopchain_pb2.PeerRequest(
channel=ChannelProperty().name,
peer_target=ChannelProperty().peer_target,
peer_id=ChannelProperty().peer_id,
group_id=ChannelProperty().group_id,
node_type=ChannelProperty().node_type,
peer_order=peer_object.order)
self.__broadcast_scheduler.schedule_broadcast("Subscribe",
peer_request)
async def subscribe_to_radio_station(self):
await self.__subscribe_call_to_stub(self.__radio_station_stub,
loopchain_pb2.PEER)
async def subscribe_to_peer(self, peer_id, peer_type):
peer = self.peer_manager.get_peer(peer_id)
peer_stub = self.peer_manager.get_peer_stub_manager(peer)
await self.__subscribe_call_to_stub(peer_stub, peer_type)
self.__broadcast_scheduler.schedule_job(BroadcastCommand.SUBSCRIBE,
peer_stub.target)
async def __subscribe_call_to_stub(self, peer_stub, peer_type):
if self.is_support_node_function(conf.NodeFunction.Vote):
await peer_stub.call_async(
"Subscribe",
loopchain_pb2.PeerRequest(
channel=ChannelProperty().name,
peer_target=ChannelProperty().peer_target,
peer_type=peer_type,
peer_id=ChannelProperty().peer_id,
group_id=ChannelProperty().group_id,
node_type=ChannelProperty().node_type),
)
else:
await self.__subscribe_call_from_citizen()
async def __subscribe_call_from_citizen(self):
def _handle_exception(future: asyncio.Future):
logging.debug(
f"error: {type(future.exception())}, {str(future.exception())}"
)
if isinstance(future.exception(), NotImplementedError):
asyncio.ensure_future(
self.__subscribe_call_by_rest_stub(subscribe_event))
elif isinstance(future.exception(), ConnectionError):
logging.warning(f"Waiting for next subscribe request...")
if self.__state_machine.state != "SubscribeNetwork":
self.__state_machine.subscribe_network()
subscribe_event = asyncio.Event()
util.logger.spam(
f"try subscribe_call_by_citizen target({ChannelProperty().rest_target})"
)
# try websocket connection, and handle exception in callback
asyncio.ensure_future(
self.__node_subscriber.subscribe(
block_height=self.block_manager.get_blockchain().block_height,
event=subscribe_event)).add_done_callback(_handle_exception)
await subscribe_event.wait()
async def __subscribe_call_by_rest_stub(self, event):
if conf.REST_SSL_TYPE == conf.SSLAuthType.none:
peer_target = ChannelProperty().rest_target
else:
peer_target = f"https://{ChannelProperty().rest_target}"
response = None
try:
response = await self.__radio_station_stub.call_async(
"Subscribe", {
'channel': ChannelProperty().name,
'peer_target': peer_target
})
except Exception as e:
logging.warning(
f"Due to Subscription fail to RadioStation(mother peer), "
f"automatically retrying subscribe call")
if response and response[
'response_code'] == message_code.Response.success:
logging.debug(
f"Subscription to RadioStation(mother peer) is successful.")
event.set()
self.start_check_last_block_rs_timer()
def __check_last_block_to_rs(self):
last_block = self.__radio_station_stub.call_async("GetLastBlock")
if last_block['height'] <= self.__block_manager.get_blockchain(
).block_height:
return
# RS peer didn't announced new block
self.stop_check_last_block_rs_timer()
if self.__state_machine.state != "SubscribeNetwork":
self.__state_machine.subscribe_network()
def shutdown_peer(self, **kwargs):
logging.debug(f"channel_service:shutdown_peer")
StubCollection().peer_stub.sync_task().stop(message=kwargs['message'])
def set_peer_type(self, peer_type):
"""Set peer type when peer init only
:param peer_type:
:return:
"""
self.__block_manager.set_peer_type(peer_type)
def save_peer_manager(self, peer_manager):
"""peer_list 를 leveldb 에 저장한다.
:param peer_manager:
"""
level_db_key_name = str.encode(conf.LEVEL_DB_KEY_FOR_PEER_LIST)
try:
dump = peer_manager.dump()
level_db = self.__block_manager.get_level_db()
level_db.Put(level_db_key_name, dump)
except AttributeError as e:
logging.warning("Fail Save Peer_list: " + str(e))
async def set_peer_type_in_channel(self):
peer_type = loopchain_pb2.PEER
peer_leader = self.peer_manager.get_leader_peer(
is_complain_to_rs=self.is_support_node_function(
conf.NodeFunction.Vote))
logging.debug(f"channel({ChannelProperty().name}) peer_leader: " +
str(peer_leader))
logger_preset = loggers.get_preset()
if self.is_support_node_function(
conf.NodeFunction.Vote) and ChannelProperty(
).peer_id == peer_leader.peer_id:
logger_preset.is_leader = True
logging.debug(
f"Set Peer Type Leader! channel({ChannelProperty().name})")
peer_type = loopchain_pb2.BLOCK_GENERATOR
else:
logger_preset.is_leader = False
logger_preset.update_logger()
if conf.CONSENSUS_ALGORITHM == conf.ConsensusAlgorithm.lft:
self.consensus.leader_id = peer_leader.peer_id
if peer_type == loopchain_pb2.BLOCK_GENERATOR:
self.block_manager.set_peer_type(peer_type)
self.__ready_to_height_sync(True)
elif peer_type == loopchain_pb2.PEER:
self.__ready_to_height_sync(False)
def __ready_to_height_sync(self, is_leader: bool = False):
block_chain = self.block_manager.get_blockchain()
block_chain.init_block_chain(is_leader)
if block_chain.block_height > -1:
self.block_manager.rebuild_block()
async def block_height_sync_channel(self):
# leader 로 시작하지 않았는데 자신의 정보가 leader Peer 정보이면 block height sync 하여
# 최종 블럭의 leader 를 찾는다.
peer_manager = self.peer_manager
peer_leader = peer_manager.get_leader_peer()
self_peer_object = peer_manager.get_peer(ChannelProperty().peer_id)
is_delay_announce_new_leader = False
peer_old_leader = None
if peer_leader:
block_sync_target = peer_leader.target
block_sync_target_stub = StubManager.get_stub_manager_to_server(
block_sync_target,
loopchain_pb2_grpc.PeerServiceStub,
time_out_seconds=conf.CONNECTION_RETRY_TIMEOUT,
ssl_auth_type=conf.GRPC_SSL_TYPE)
else:
block_sync_target = ChannelProperty().radio_station_target
block_sync_target_stub = self.__radio_station_stub
if block_sync_target != ChannelProperty().peer_target:
if block_sync_target_stub is None:
logging.warning(
"You maybe Older from this network... or No leader in this network!"
)
is_delay_announce_new_leader = True
peer_old_leader = peer_leader
peer_leader = self.peer_manager.leader_complain_to_rs(
conf.ALL_GROUP_ID, is_announce_new_peer=False)
if peer_leader is not None and ChannelProperty(
).node_type == conf.NodeType.CommunityNode:
block_sync_target_stub = StubManager.get_stub_manager_to_server(
peer_leader.target,
loopchain_pb2_grpc.PeerServiceStub,
time_out_seconds=conf.CONNECTION_RETRY_TIMEOUT,
ssl_auth_type=conf.GRPC_SSL_TYPE)
if self.is_support_node_function(conf.NodeFunction.Vote) and \
(not peer_leader or peer_leader.peer_id == ChannelProperty().peer_id):
peer_leader = self_peer_object
self.block_manager.set_peer_type(loopchain_pb2.BLOCK_GENERATOR)
else:
_, future = self.block_manager.block_height_sync(
block_sync_target_stub)
await future
self.show_peers()
if is_delay_announce_new_leader and ChannelProperty(
).node_type == conf.NodeType.CommunityNode:
self.peer_manager.announce_new_leader(
peer_old_leader.peer_id,
peer_leader.peer_id,
self_peer_id=ChannelProperty().peer_id)
def show_peers(self):
logging.debug(f"peer_service:show_peers ({ChannelProperty().name}): ")
for peer in self.peer_manager.get_IP_of_peers_in_group():
logging.debug("peer_target: " + peer)
async def reset_leader(self, new_leader_id, block_height=0):
logging.info(
f"RESET LEADER channel({ChannelProperty().name}) leader_id({new_leader_id})"
)
leader_peer = self.peer_manager.get_peer(new_leader_id, None)
if block_height > 0 and block_height != self.block_manager.get_blockchain(
).last_block.header.height + 1:
util.logger.warning(
f"height behind peer can not take leader role. block_height({block_height}), "
f"last_block.header.height("
f"{self.block_manager.get_blockchain().last_block.header.height})"
)
return
if leader_peer is None:
logging.warning(
f"in peer_service:reset_leader There is no peer by peer_id({new_leader_id})"
)
return
util.logger.spam(
f"peer_service:reset_leader target({leader_peer.target})")
self_peer_object = self.peer_manager.get_peer(
ChannelProperty().peer_id)
self.peer_manager.set_leader_peer(leader_peer, None)
peer_leader = self.peer_manager.get_leader_peer()
peer_type = loopchain_pb2.PEER
if self_peer_object.target == peer_leader.target:
logging.debug("Set Peer Type Leader!")
peer_type = loopchain_pb2.BLOCK_GENERATOR
self.state_machine.turn_to_leader()
if conf.CONSENSUS_ALGORITHM != conf.ConsensusAlgorithm.lft:
if conf.ENABLE_REP_RADIO_STATION:
self.peer_manager.announce_new_leader(
self.peer_manager.get_leader_peer().peer_id,
new_leader_id,
is_broadcast=True,
self_peer_id=ChannelProperty().peer_id)
else:
logging.debug("Set Peer Type Peer!")
self.state_machine.turn_to_peer()
# 새 leader 에게 subscribe 하기
# await self.subscribe_to_radio_station()
await self.subscribe_to_peer(peer_leader.peer_id,
loopchain_pb2.BLOCK_GENERATOR)
self.block_manager.set_peer_type(peer_type)
self.block_manager.epoch.set_epoch_leader(peer_leader.peer_id)
def set_new_leader(self, new_leader_id, block_height=0):
logging.info(
f"SET NEW LEADER channel({ChannelProperty().name}) leader_id({new_leader_id})"
)
# complained_leader = self.peer_manager.get_leader_peer()
leader_peer = self.peer_manager.get_peer(new_leader_id, None)
if block_height > 0 and block_height != self.block_manager.get_blockchain(
).last_block.height + 1:
logging.warning(f"height behind peer can not take leader role.")
return
if leader_peer is None:
logging.warning(
f"in channel_service:set_new_leader::There is no peer by peer_id({new_leader_id})"
)
return
util.logger.spam(
f"channel_service:set_new_leader::leader_target({leader_peer.target})"
)
self_peer_object = self.peer_manager.get_peer(
ChannelProperty().peer_id)
self.peer_manager.set_leader_peer(leader_peer, None)
peer_leader = self.peer_manager.get_leader_peer()
if self_peer_object.target == peer_leader.target:
loggers.get_preset().is_leader = True
loggers.get_preset().update_logger()
logging.debug("I'm Leader Peer!")
else:
loggers.get_preset().is_leader = False
loggers.get_preset().update_logger()
logging.debug("I'm general Peer!")
# 새 leader 에게 subscribe 하기
# await self.subscribe_to_radio_station()
# await self.subscribe_to_peer(peer_leader.peer_id, loopchain_pb2.BLOCK_GENERATOR)
def genesis_invoke(self, block: Block) -> ('Block', dict):
method = "icx_sendTransaction"
transactions = []
for tx in block.body.transactions.values():
tx_serializer = TransactionSerializer.new(
tx.version,
self.block_manager.get_blockchain().tx_versioner)
transaction = {
"method": method,
"params": {
"txHash": tx.hash.hex()
},
"genesisData": tx_serializer.to_full_data(tx)
}
transactions.append(transaction)
request = {
'block': {
'blockHeight': block.header.height,
'blockHash': block.header.hash.hex(),
'timestamp': block.header.timestamp
},
'transactions': transactions
}
request = convert_params(request, ParamType.invoke)
stub = StubCollection().icon_score_stubs[ChannelProperty().name]
response = stub.sync_task().invoke(request)
response_to_json_query(response)
block_builder = BlockBuilder.from_new(
block,
self.block_manager.get_blockchain().tx_versioner)
block_builder.commit_state = {
ChannelProperty().name: response['stateRootHash']
}
new_block = block_builder.build()
return new_block, response["txResults"]
def score_invoke(self, _block: Block) -> dict or None:
method = "icx_sendTransaction"
transactions = []
for tx in _block.body.transactions.values():
tx_serializer = TransactionSerializer.new(
tx.version,
self.block_manager.get_blockchain().tx_versioner)
transaction = {
"method": method,
"params": tx_serializer.to_full_data(tx)
}
transactions.append(transaction)
request = {
'block': {
'blockHeight':
_block.header.height,
'blockHash':
_block.header.hash.hex(),
'prevBlockHash':
_block.header.prev_hash.hex()
if _block.header.prev_hash else '',
'timestamp':
_block.header.timestamp
},
'transactions': transactions
}
request = convert_params(request, ParamType.invoke)
stub = StubCollection().icon_score_stubs[ChannelProperty().name]
response = stub.sync_task().invoke(request)
response_to_json_query(response)
block_builder = BlockBuilder.from_new(
_block,
self.__block_manager.get_blockchain().tx_versioner)
block_builder.commit_state = {
ChannelProperty().name: response['stateRootHash']
}
new_block = block_builder.build()
return new_block, response["txResults"]
def score_change_block_hash(self, block_height, old_block_hash,
new_block_hash):
change_hash_info = json.dumps({
"block_height": block_height,
"old_block_hash": old_block_hash,
"new_block_hash": new_block_hash
})
stub = StubCollection().score_stubs[ChannelProperty().name]
stub.sync_task().change_block_hash(change_hash_info)
def score_write_precommit_state(self, block: Block):
logging.debug(
f"call score commit {ChannelProperty().name} {block.header.height} {block.header.hash.hex()}"
)
request = {
"blockHeight": block.header.height,
"blockHash": block.header.hash.hex(),
}
request = convert_params(request, ParamType.write_precommit_state)
stub = StubCollection().icon_score_stubs[ChannelProperty().name]
stub.sync_task().write_precommit_state(request)
return True
def score_remove_precommit_state(self, block: Block):
invoke_fail_info = json.dumps({
"block_height": block.height,
"block_hash": block.block_hash
})
stub = StubCollection().score_stubs[ChannelProperty().name]
stub.sync_task().remove_precommit_state(invoke_fail_info)
return True
def get_object_has_queue_by_consensus(self):
if conf.CONSENSUS_ALGORITHM == conf.ConsensusAlgorithm.lft:
object_has_queue = self.__consensus
else:
object_has_queue = self.__block_manager
self.start_leader_complain_timer()
return object_has_queue
def start_leader_complain_timer(self):
# util.logger.debug(f"start_leader_complain_timer in channel service.")
self.__timer_service.add_timer_convenient(
timer_key=TimerService.TIMER_KEY_LEADER_COMPLAIN,
duration=conf.TIMEOUT_FOR_LEADER_COMPLAIN,
is_repeat=True,
callback=self.state_machine.leader_complain)
def stop_leader_complain_timer(self):
# util.logger.debug(f"stop_leader_complain_timer in channel service.")
self.__timer_service.stop_timer(TimerService.TIMER_KEY_LEADER_COMPLAIN)
def start_subscribe_timer(self):
self.__timer_service.add_timer_convenient(
timer_key=TimerService.TIMER_KEY_SUBSCRIBE,
duration=conf.SUBSCRIBE_RETRY_TIMER,
is_repeat=True,
callback=self.subscribe_network)
def stop_subscribe_timer(self):
self.__timer_service.stop_timer(TimerService.TIMER_KEY_SUBSCRIBE)
def start_check_last_block_rs_timer(self):
self.__timer_service.add_timer_convenient(
timer_key=TimerService.
TIMER_KEY_GET_LAST_BLOCK_KEEP_CITIZEN_SUBSCRIPTION,
duration=conf.GET_LAST_BLOCK_TIMER,
is_repeat=True,
callback=self.__check_last_block_to_rs)
def stop_check_last_block_rs_timer(self):
self.__timer_service.stop_timer(
TimerService.TIMER_KEY_GET_LAST_BLOCK_KEEP_CITIZEN_SUBSCRIPTION)
def start_shutdown_timer(self):
error = f"Shutdown by Subscribe retry timeout({conf.SHUTDOWN_TIMER} sec)"
self.__timer_service.add_timer_convenient(
timer_key=TimerService.TIMER_KEY_SHUTDOWN_WHEN_FAIL_SUBSCRIBE,
duration=conf.SHUTDOWN_TIMER,
callback=self.shutdown_peer,
callback_kwargs={"message": error})
def stop_shutdown_timer(self):
self.__timer_service.stop_timer(
TimerService.TIMER_KEY_SHUTDOWN_WHEN_FAIL_SUBSCRIBE)
class ChannelService:
def __init__(self, channel_name, amqp_target, amqp_key):
self.__block_manager: BlockManager = None
self.__score_container: CommonSubprocess = None
self.__score_info: dict = None
self.__peer_auth: PeerAuthorization = None
self.__peer_manager: PeerManager = None
self.__broadcast_scheduler: BroadcastScheduler = None
self.__radio_station_stub = None
self.__consensus: Consensus = None
self.__proposer: Proposer = None
self.__acceptor: Acceptor = None
self.__timer_service = TimerService()
loggers.get_preset().channel_name = channel_name
loggers.get_preset().update_logger()
channel_queue_name = conf.CHANNEL_QUEUE_NAME_FORMAT.format(
channel_name=channel_name, amqp_key=amqp_key)
self.__inner_service = ChannelInnerService(amqp_target,
channel_queue_name,
conf.AMQP_USERNAME,
conf.AMQP_PASSWORD,
channel_service=self)
logging.info(
f"ChannelService : {channel_name}, Queue : {channel_queue_name}")
ChannelProperty().name = channel_name
ChannelProperty().amqp_target = amqp_target
StubCollection().amqp_key = amqp_key
StubCollection().amqp_target = amqp_target
command_arguments.add_raw_command(command_arguments.Type.Channel,
channel_name)
command_arguments.add_raw_command(command_arguments.Type.AMQPTarget,
amqp_target)
command_arguments.add_raw_command(command_arguments.Type.AMQPKey,
amqp_key)
ObjectManager().channel_service = self
@property
def block_manager(self):
return self.__block_manager
@property
def score_container(self):
return self.__score_container
@property
def score_info(self):
return self.__score_info
@property
def radio_station_stub(self):
return self.__radio_station_stub
@property
def peer_auth(self):
return self.__peer_auth
@property
def peer_manager(self):
return self.__peer_manager
@property
def broadcast_scheduler(self):
return self.__broadcast_scheduler
@property
def consensus(self):
return self.__consensus
@property
def acceptor(self):
return self.__acceptor
@property
def timer_service(self):
return self.__timer_service
def serve(self):
async def _serve():
await StubCollection().create_peer_stub()
results = await StubCollection().peer_stub.async_task(
).get_channel_info_detail(ChannelProperty().name)
await self.init(*results)
self.__timer_service.start()
logging.info(
f'channel_service: init complete channel: {ChannelProperty().name}'
)
loop = MessageQueueService.loop
loop.create_task(_serve())
loop.add_signal_handler(signal.SIGINT, self.close)
loop.add_signal_handler(signal.SIGTERM, self.close)
try:
loop.run_forever()
finally:
loop.run_until_complete(loop.shutdown_asyncgens())
loop.close()
self.cleanup()
def close(self):
MessageQueueService.loop.stop()
def cleanup(self):
logging.info("Cleanup Channel Resources.")
if self.__block_manager:
self.__block_manager.stop()
self.__block_manager.wait()
self.__block_manager = None
logging.info("Cleanup BlockManager.")
if self.__score_container:
self.__score_container.stop()
self.__score_container.wait()
self.__score_container = None
logging.info("Cleanup ScoreContainer.")
if self.__broadcast_scheduler:
self.__broadcast_scheduler.stop()
self.__broadcast_scheduler.wait()
self.__broadcast_scheduler = None
logging.info("Cleanup BroadcastSchuduler.")
if self.__consensus:
self.__consensus.stop()
self.__consensus.wait()
logging.info("Cleanup Consensus.")
if self.__timer_service.is_run():
self.__timer_service.stop()
self.__timer_service.wait()
logging.info("Cleanup TimerSerivce.")
async def init(self, peer_port, peer_target, rest_target,
radio_station_target, peer_id, group_id, node_type,
score_package):
loggers.get_preset().peer_id = peer_id
loggers.get_preset().update_logger()
ChannelProperty().peer_port = peer_port
ChannelProperty().peer_target = peer_target
ChannelProperty().rest_target = rest_target
ChannelProperty().radio_station_target = radio_station_target
ChannelProperty().peer_id = peer_id
ChannelProperty().group_id = group_id
ChannelProperty().node_type = conf.NodeType(node_type)
ChannelProperty().score_package = score_package
self.__init_peer_auth()
self.__init_block_manager()
self.__init_broadcast_scheduler()
self.__init_radio_station_stub()
await self.__init_score_container()
await self.__inner_service.connect(conf.AMQP_CONNECTION_ATTEMPS,
conf.AMQP_RETRY_DELAY,
exclusive=True)
self.__peer_manager = PeerManager(ChannelProperty().name)
if conf.CONSENSUS_ALGORITHM == conf.ConsensusAlgorithm.lft:
util.logger.spam(f"init consensus !")
# load consensus
self.__init_consensus()
# load proposer
self.__init_proposer(peer_id=peer_id)
# load acceptor
self.__init_acceptor(peer_id=peer_id)
if self.is_support_node_function(conf.NodeFunction.Vote):
self.connect_to_radio_station()
await self.set_peer_type_in_channel()
await self.subscribe_to_radio_station()
self.generate_genesis_block()
if conf.CONSENSUS_ALGORITHM == conf.ConsensusAlgorithm.lft:
self.__consensus.change_epoch(precommit_block=self.__block_manager.
get_blockchain().last_block)
self.__consensus.start()
elif conf.ALLOW_MAKE_EMPTY_BLOCK:
self.block_manager.block_generation_scheduler.start()
def __init_peer_auth(self):
try:
channel_use_icx = self.get_channel_option(
)["send_tx_type"] == conf.SendTxType.icx
channel_authorization = IcxAuthorization if channel_use_icx else PeerAuthorization
self.__peer_auth = channel_authorization(ChannelProperty().name)
except Exception as e:
logging.exception(f"peer auth init fail cause : {e}")
util.exit_and_msg(f"peer auth init fail cause : {e}")
def __init_block_manager(self):
logging.debug(
f"__load_block_manager_each channel({ChannelProperty().name})")
try:
self.__block_manager = BlockManager(
channel_manager=self,
peer_id=ChannelProperty().peer_id,
channel_name=ChannelProperty().name,
level_db_identity=ChannelProperty().peer_target)
self.__block_manager.consensus_algorithm = self.__init_consensus_algorithm(
)
if conf.CONSENSUS_ALGORITHM != conf.ConsensusAlgorithm.lft:
self.__block_manager.start()
except leveldb.LevelDBError as e:
util.exit_and_msg("LevelDBError(" + str(e) + ")")
def __init_consensus(self):
consensus = Consensus(self, ChannelProperty().name)
self.__consensus = consensus
self.__block_manager.consensus = consensus
consensus.multiple_register(self.__block_manager)
def __init_proposer(self, peer_id: str):
proposer = Proposer(name="loopchain.consensus.Proposer",
peer_id=peer_id,
channel=ChannelProperty().name,
channel_service=self)
self.__consensus.multiple_register(proposer)
self.__proposer = proposer
def __init_acceptor(self, peer_id: str):
acceptor = Acceptor(name="loopchain.consensus.Acceptor",
consensus=self.__consensus,
peer_id=peer_id,
channel=ChannelProperty().name,
channel_service=self)
self.__consensus.multiple_register(acceptor)
self.__acceptor = acceptor
def __init_broadcast_scheduler(self):
scheduler = BroadcastScheduler(
channel=ChannelProperty().name,
self_target=ChannelProperty().peer_target)
scheduler.start()
self.__broadcast_scheduler = scheduler
future = scheduler.schedule_job(BroadcastCommand.SUBSCRIBE,
ChannelProperty().peer_target)
future.result(conf.TIMEOUT_FOR_FUTURE)
def __init_radio_station_stub(self):
if self.is_support_node_function(conf.NodeFunction.Vote):
self.__radio_station_stub = StubManager.get_stub_manager_to_server(
ChannelProperty().radio_station_target,
loopchain_pb2_grpc.RadioStationStub,
conf.CONNECTION_RETRY_TIMEOUT_TO_RS,
ssl_auth_type=conf.GRPC_SSL_TYPE)
else:
self.__radio_station_stub = RestStubManager(
ChannelProperty().radio_station_target)
async def __init_score_container(self):
"""create score container and save score_info and score_stub
"""
for i in range(conf.SCORE_LOAD_RETRY_TIMES):
try:
self.__score_info = await self.__run_score_container()
except BaseException as e:
util.logger.spam(
f"channel_manager:load_score_container_each score_info load fail retry({i})"
)
logging.error(e)
traceback.print_exc()
time.sleep(conf.SCORE_LOAD_RETRY_INTERVAL
) # This blocking main thread is intended.
else:
break
async def __run_score_container(self):
if not conf.USE_EXTERNAL_SCORE or conf.EXTERNAL_SCORE_RUN_IN_LAUNCHER:
process_args = [
'python3', '-m', 'loopchain', 'score', '--channel',
ChannelProperty().name, '--score_package',
ChannelProperty().score_package
]
process_args += command_arguments.get_raw_commands_by_filter(
command_arguments.Type.AMQPTarget,
command_arguments.Type.AMQPKey, command_arguments.Type.Develop,
command_arguments.Type.ConfigurationFilePath)
self.__score_container = CommonSubprocess(process_args)
if conf.USE_EXTERNAL_SCORE:
await StubCollection().create_icon_score_stub(
ChannelProperty().name)
await StubCollection().icon_score_stubs[ChannelProperty().name
].connect()
await StubCollection().icon_score_stubs[ChannelProperty().name
].async_task().hello()
return None
else:
await StubCollection().create_score_stub(
ChannelProperty().name,
ChannelProperty().score_package)
await StubCollection().score_stubs[ChannelProperty().name
].connect()
await StubCollection().score_stubs[ChannelProperty().name
].async_task().hello()
return await self.__load_score()
def __init_consensus_algorithm(self):
"""initialize a consensus algorithm by configuration.
"""
if conf.CONSENSUS_ALGORITHM == conf.ConsensusAlgorithm.none:
consensus_algorithm = ConsensusNone(self.__block_manager)
elif conf.CONSENSUS_ALGORITHM == conf.ConsensusAlgorithm.siever:
consensus_algorithm = ConsensusSiever(self.__block_manager)
elif conf.CONSENSUS_ALGORITHM == conf.ConsensusAlgorithm.lft:
consensus_algorithm = ConsensusLFT(self.__block_manager)
else:
consensus_algorithm = ConsensusDefault(self.__block_manager)
return consensus_algorithm
async def __load_score(self):
channel_name = ChannelProperty().name
score_package_name = ChannelProperty().score_package
util.logger.spam(f"peer_service:__load_score --init--")
logging.info("LOAD SCORE AND CONNECT TO SCORE SERVICE!")
params = dict()
params[message_code.MetaParams.ScoreLoad.
repository_path] = conf.DEFAULT_SCORE_REPOSITORY_PATH
params[message_code.MetaParams.ScoreLoad.
score_package] = score_package_name
params[
message_code.MetaParams.ScoreLoad.base] = conf.DEFAULT_SCORE_BASE
params[message_code.MetaParams.ScoreLoad.peer_id] = ChannelProperty(
).peer_id
meta = json.dumps(params)
logging.debug(f"load score params : {meta}")
util.logger.spam(f"peer_service:__load_score --1--")
score_stub = StubCollection().score_stubs[channel_name]
response = await score_stub.async_task().score_load(meta)
logging.debug("try score load on score service: " + str(response))
if not response:
return None
if response.code != message_code.Response.success:
util.exit_and_msg("Fail Get Score from Score Server...")
return None
logging.debug("Get Score from Score Server...")
score_info = json.loads(response.meta)
logging.info("LOAD SCORE DONE!")
util.logger.spam(f"peer_service:__load_score --end--")
return score_info
def is_support_node_function(self, node_function):
return conf.NodeType.is_support_node_function(
node_function,
ChannelProperty().node_type)
def get_channel_option(self) -> dict:
channel_option = conf.CHANNEL_OPTION
return channel_option[ChannelProperty().name]
def generate_genesis_block(self):
if self.block_manager.peer_type != loopchain_pb2.BLOCK_GENERATOR:
return
block_chain = self.block_manager.get_blockchain()
if block_chain.block_height > -1:
logging.debug("genesis block was already generated")
return
block_chain.generate_genesis_block()
def connect_to_radio_station(self, is_reconnect=False):
response = self.__radio_station_stub.call_in_times(
method_name="ConnectPeer",
message=loopchain_pb2.ConnectPeerRequest(
channel=ChannelProperty().name,
peer_object=b'',
peer_id=ChannelProperty().peer_id,
peer_target=ChannelProperty().peer_target,
group_id=ChannelProperty().group_id,
cert=self.peer_auth.peer_cert),
retry_times=conf.CONNECTION_RETRY_TIMES_TO_RS,
is_stub_reuse=True,
timeout=conf.CONNECTION_TIMEOUT_TO_RS)
# start next ConnectPeer timer
if TimerService.TIMER_KEY_CONNECT_PEER not in self.__timer_service.timer_list.keys(
):
self.__timer_service.add_timer(
TimerService.TIMER_KEY_CONNECT_PEER,
Timer(target=TimerService.TIMER_KEY_CONNECT_PEER,
duration=conf.CONNECTION_RETRY_TIMER,
callback=self.connect_to_radio_station,
callback_kwargs={"is_reconnect": True}))
if is_reconnect:
return
if response and response.status == message_code.Response.success:
peer_list_data = pickle.loads(response.peer_list)
self.__peer_manager.load(peer_list_data, False)
peers, peer_list = self.__peer_manager.get_peers_for_debug()
logging.debug("peer list update: " + peers)
# add connected peer to processes audience
for each_peer in peer_list:
util.logger.spam(
f"peer_service:connect_to_radio_station peer({each_peer.target}-{each_peer.status})"
)
if each_peer.status == PeerStatus.connected:
self.__broadcast_scheduler.schedule_job(
BroadcastCommand.SUBSCRIBE, each_peer.target)
async def subscribe_to_radio_station(self):
await self.__subscribe_call_to_stub_by_method(
self.__radio_station_stub, loopchain_pb2.PEER)
async def subscribe_to_peer(self, peer_id, peer_type):
peer = self.peer_manager.get_peer(peer_id)
peer_stub = self.peer_manager.get_peer_stub_manager(peer)
await self.__subscribe_call_to_stub_by_method(peer_stub, peer_type)
self.__broadcast_scheduler.schedule_job(BroadcastCommand.SUBSCRIBE,
peer_stub.target)
async def __subscribe_call_to_stub_by_method(self, peer_stub, peer_type):
if self.is_support_node_function(conf.NodeFunction.Vote):
await peer_stub.call_async(
"Subscribe",
loopchain_pb2.PeerRequest(
channel=ChannelProperty().name,
peer_target=ChannelProperty().peer_target,
peer_type=peer_type,
peer_id=ChannelProperty().peer_id,
group_id=ChannelProperty().group_id,
node_type=ChannelProperty().node_type),
)
else:
util.logger.spam(
f"channel_service:__subscribe_call_to_stub_by_method "
f"peer_target({ChannelProperty().rest_target})")
response = self.__subscribe_call_to_rs_stub(peer_stub)
if response['response_code'] != message_code.Response.success:
error = f"subscribe fail to peer_target({ChannelProperty().radio_station_target}) " \
f"reason({response['message']})"
await StubCollection().peer_stub.async_task().stop(
message=error)
def __subscribe_call_to_rs_stub(self, rs_rest_stub):
response = {
'response_code': message_code.Response.fail,
'message':
message_code.get_response_msg(message_code.Response.fail)
}
try:
if conf.REST_SSL_TYPE == conf.SSLAuthType.none:
peer_target = ChannelProperty().rest_target
else:
peer_target = f"https://{ChannelProperty().rest_target}"
response = rs_rest_stub.call("Subscribe", {
'channel': ChannelProperty().name,
'peer_target': peer_target
})
except Exception as e:
logging.warning(
f"Due to Subscription fail to RadioStation(mother peer), "
f"automatically retrying subscribe call")
if response['response_code'] == message_code.Response.success:
if TimerService.TIMER_KEY_SUBSCRIBE in self.__timer_service.timer_list.keys(
):
self.__timer_service.stop_timer(
TimerService.TIMER_KEY_SUBSCRIBE)
self.radio_station_stub.update_methods_version()
logging.debug(
f"Subscription to RadioStation(mother peer) is successful."
)
if TimerService.TIMER_KEY_SHUTDOWN_WHEN_FAIL_SUBSCRIBE in self.__timer_service.timer_list.keys(
):
self.__timer_service.stop_timer(
TimerService.TIMER_KEY_SHUTDOWN_WHEN_FAIL_SUBSCRIBE)
# start next get_status timer
timer_key = TimerService.TIMER_KEY_GET_LAST_BLOCK_KEEP_CITIZEN_SUBSCRIPTION
if timer_key not in self.__timer_service.timer_list.keys():
util.logger.spam(
f"add timer for check_block_height_call to radiostation..."
)
self.__timer_service.add_timer(
timer_key,
Timer(target=timer_key,
duration=conf.GET_LAST_BLOCK_TIMER,
is_repeat=True,
callback=self.__check_block_height_call_to_rs_stub,
callback_kwargs={"rs_rest_stub": rs_rest_stub}))
else:
timer_key = TimerService.TIMER_KEY_SHUTDOWN_WHEN_FAIL_SUBSCRIBE
if timer_key not in self.__timer_service.timer_list.keys():
error = f"Shutdown by Subscribe retry timeout({conf.SHUTDOWN_TIMER})"
self.__timer_service.add_timer(
timer_key,
Timer(target=timer_key,
duration=conf.SHUTDOWN_TIMER,
callback=self.__shutdown_peer,
callback_kwargs={"message": error}))
return response
def __check_block_height_call_to_rs_stub(self, **kwargs):
rs_rest_stub = kwargs.get("rs_rest_stub", None)
response = dict()
try:
response = rs_rest_stub.call("GetLastBlock")
except Exception as e:
response['response_code'] = message_code.Response.fail
if response['response_code'] == message_code.Response.success:
if response[
'block']['height'] <= self.__block_manager.get_blockchain(
).block_height:
# keep get last block timer, citizen subscription is still valid.
return
# citizen needs additional block or failed to connect to mother peer.
timer_key = TimerService.TIMER_KEY_GET_LAST_BLOCK_KEEP_CITIZEN_SUBSCRIPTION
if timer_key in self.__timer_service.timer_list.keys():
util.logger.spam(
f"stop timer for check_block_height_call to radiostation...")
self.__timer_service.stop_timer(timer_key)
timer_key = TimerService.TIMER_KEY_SUBSCRIBE
if timer_key not in self.__timer_service.timer_list.keys():
self.__timer_service.add_timer(
timer_key,
Timer(target=timer_key,
duration=conf.SUBSCRIBE_RETRY_TIMER,
is_repeat=True,
callback=self.__subscribe_call_to_rs_stub,
callback_kwargs={"rs_rest_stub": rs_rest_stub}))
def __shutdown_peer(self, **kwargs):
util.logger.spam(f"channel_service:__shutdown_peer")
StubCollection().peer_stub.sync_task().stop(message=kwargs['message'])
def set_peer_type(self, peer_type):
"""Set peer type when peer init only
:param peer_type:
:return:
"""
self.__block_manager.set_peer_type(peer_type)
def save_peer_manager(self, peer_manager):
"""peer_list 를 leveldb 에 저장한다.
:param peer_manager:
"""
level_db_key_name = str.encode(conf.LEVEL_DB_KEY_FOR_PEER_LIST)
try:
dump = peer_manager.dump()
level_db = self.__block_manager.get_level_db()
level_db.Put(level_db_key_name, dump)
except AttributeError as e:
logging.warning("Fail Save Peer_list: " + str(e))
async def set_peer_type_in_channel(self):
peer_type = loopchain_pb2.PEER
peer_leader = self.peer_manager.get_leader_peer(
is_complain_to_rs=self.is_support_node_function(
conf.NodeFunction.Vote))
logging.debug(f"channel({ChannelProperty().name}) peer_leader: " +
str(peer_leader))
logger_preset = loggers.get_preset()
if self.is_support_node_function(
conf.NodeFunction.Vote) and ChannelProperty(
).peer_id == peer_leader.peer_id:
logger_preset.is_leader = True
logging.debug(
f"Set Peer Type Leader! channel({ChannelProperty().name})")
peer_type = loopchain_pb2.BLOCK_GENERATOR
else:
logger_preset.is_leader = False
logger_preset.update_logger()
if conf.CONSENSUS_ALGORITHM == conf.ConsensusAlgorithm.lft:
self.consensus.leader_id = peer_leader.peer_id
if peer_type == loopchain_pb2.BLOCK_GENERATOR:
self.block_manager.set_peer_type(peer_type)
self.__ready_to_height_sync(True)
elif peer_type == loopchain_pb2.PEER:
self.__ready_to_height_sync(False)
await self.__block_height_sync_channel()
def __ready_to_height_sync(self, is_leader: bool = False):
block_chain = self.block_manager.get_blockchain()
block_chain.init_block_chain(is_leader)
if block_chain.block_height > -1:
self.block_manager.rebuild_block()
async def __block_height_sync_channel(self):
# leader 로 시작하지 않았는데 자신의 정보가 leader Peer 정보이면 block height sync 하여
# 최종 블럭의 leader 를 찾는다.
peer_manager = self.peer_manager
peer_leader = peer_manager.get_leader_peer()
self_peer_object = peer_manager.get_peer(ChannelProperty().peer_id)
is_delay_announce_new_leader = False
peer_old_leader = None
if peer_leader:
block_sync_target = peer_leader.target
block_sync_target_stub = StubManager.get_stub_manager_to_server(
block_sync_target,
loopchain_pb2_grpc.PeerServiceStub,
time_out_seconds=conf.CONNECTION_RETRY_TIMEOUT,
ssl_auth_type=conf.GRPC_SSL_TYPE)
else:
block_sync_target = ChannelProperty().radio_station_target
block_sync_target_stub = self.__radio_station_stub
if block_sync_target != ChannelProperty().peer_target:
if block_sync_target_stub is None:
logging.warning(
"You maybe Older from this network... or No leader in this network!"
)
is_delay_announce_new_leader = True
peer_old_leader = peer_leader
peer_leader = self.peer_manager.leader_complain_to_rs(
conf.ALL_GROUP_ID, is_announce_new_peer=False)
if peer_leader is not None and ChannelProperty(
).node_type == conf.NodeType.CommunityNode:
block_sync_target_stub = StubManager.get_stub_manager_to_server(
peer_leader.target,
loopchain_pb2_grpc.PeerServiceStub,
time_out_seconds=conf.CONNECTION_RETRY_TIMEOUT,
ssl_auth_type=conf.GRPC_SSL_TYPE)
if self.is_support_node_function(conf.NodeFunction.Vote) and \
(not peer_leader or peer_leader.peer_id == ChannelProperty().peer_id):
peer_leader = self_peer_object
self.block_manager.set_peer_type(loopchain_pb2.BLOCK_GENERATOR)
else:
_, future = self.block_manager.block_height_sync(
block_sync_target_stub)
await future
if block_sync_target_stub is None:
util.exit_and_msg("Fail connect to leader!!")
self.show_peers()
if block_sync_target_stub is not None and self.is_support_node_function(
conf.NodeFunction.Vote):
await self.__subscribe_call_to_stub_by_method(
block_sync_target_stub, loopchain_pb2.BLOCK_GENERATOR)
if is_delay_announce_new_leader:
self.peer_manager.announce_new_leader(
peer_old_leader.peer_id,
peer_leader.peer_id,
self_peer_id=ChannelProperty().peer_id)
def show_peers(self):
logging.debug(f"peer_service:show_peers ({ChannelProperty().name}): ")
for peer in self.peer_manager.get_IP_of_peers_in_group():
logging.debug("peer_target: " + peer)
async def reset_leader(self, new_leader_id, block_height=0):
logging.info(
f"RESET LEADER channel({ChannelProperty().name}) leader_id({new_leader_id})"
)
complained_leader = self.peer_manager.get_leader_peer()
leader_peer = self.peer_manager.get_peer(new_leader_id, None)
if block_height > 0 and block_height != self.block_manager.get_blockchain(
).last_block.height + 1:
logging.warning(f"height behind peer can not take leader role.")
return
if leader_peer is None:
logging.warning(
f"in peer_service:reset_leader There is no peer by peer_id({new_leader_id})"
)
return
util.logger.spam(
f"peer_service:reset_leader target({leader_peer.target})")
self_peer_object = self.peer_manager.get_peer(
ChannelProperty().peer_id)
self.peer_manager.set_leader_peer(leader_peer, None)
peer_leader = self.peer_manager.get_leader_peer()
peer_type = loopchain_pb2.PEER
if self_peer_object.target == peer_leader.target:
loggers.get_preset().is_leader = True
loggers.get_preset().update_logger()
logging.debug("Set Peer Type Leader!")
peer_type = loopchain_pb2.BLOCK_GENERATOR
self.block_manager.get_blockchain().reset_made_block_count()
self.peer_manager.announce_new_leader(
complained_leader.peer_id,
new_leader_id,
is_broadcast=True,
self_peer_id=ChannelProperty().peer_id)
else:
loggers.get_preset().is_leader = False
loggers.get_preset().update_logger()
logging.debug("Set Peer Type Peer!")
# 새 leader 에게 subscribe 하기
await self.subscribe_to_radio_station()
await self.subscribe_to_peer(peer_leader.peer_id,
loopchain_pb2.BLOCK_GENERATOR)
# update candidate blocks
self.block_manager.get_candidate_blocks().set_last_block(
self.block_manager.get_blockchain().last_block)
self.block_manager.set_peer_type(peer_type)
def set_new_leader(self, new_leader_id, block_height=0):
logging.info(
f"SET NEW LEADER channel({ChannelProperty().name}) leader_id({new_leader_id})"
)
# complained_leader = self.peer_manager.get_leader_peer()
leader_peer = self.peer_manager.get_peer(new_leader_id, None)
if block_height > 0 and block_height != self.block_manager.get_blockchain(
).last_block.height + 1:
logging.warning(f"height behind peer can not take leader role.")
return
if leader_peer is None:
logging.warning(
f"in channel_service:set_new_leader::There is no peer by peer_id({new_leader_id})"
)
return
util.logger.spam(
f"channel_service:set_new_leader::leader_target({leader_peer.target})"
)
self_peer_object = self.peer_manager.get_peer(
ChannelProperty().peer_id)
self.peer_manager.set_leader_peer(leader_peer, None)
peer_leader = self.peer_manager.get_leader_peer()
if self_peer_object.target == peer_leader.target:
loggers.get_preset().is_leader = True
loggers.get_preset().update_logger()
logging.debug("I'm Leader Peer!")
else:
loggers.get_preset().is_leader = False
loggers.get_preset().update_logger()
logging.debug("I'm general Peer!")
# 새 leader 에게 subscribe 하기
# await self.subscribe_to_radio_station()
# await self.subscribe_to_peer(peer_leader.peer_id, loopchain_pb2.BLOCK_GENERATOR)
def genesis_invoke(self, block: Block) -> dict or None:
if conf.USE_EXTERNAL_SCORE:
method = "icx_sendTransaction"
transactions = []
for tx in block.confirmed_transaction_list:
transaction = {
"method": method,
"params": {
"txHash": tx.tx_hash
},
"genesisData": tx.genesis_origin_data
}
transactions.append(transaction)
request = {
'block': {
'blockHeight': block.height,
'blockHash': block.block_hash,
'timestamp': block.time_stamp
},
'transactions': transactions
}
request = convert_params(request, ParamType.invoke)
stub = StubCollection().icon_score_stubs[ChannelProperty().name]
response = stub.sync_task().invoke(request)
response_to_json_query(response)
block.commit_state[
ChannelProperty().name] = response['stateRootHash']
return response["txResults"]
else:
block_object = pickle.dumps(block)
stub = StubCollection().score_stubs[ChannelProperty().name]
response = stub.sync_task().genesis_invoke(block_object)
if response.code == message_code.Response.success:
return json.loads(response.meta)
return None
def score_invoke(self, _block: Block) -> dict or None:
if conf.USE_EXTERNAL_SCORE:
method = "icx_sendTransaction"
transactions = []
for tx in _block.confirmed_transaction_list:
data = tx.icx_origin_data
transaction = {"method": method, "params": data}
transactions.append(transaction)
request = {
'block': {
'blockHeight': _block.height,
'blockHash': _block.block_hash,
'prevBlockHash': _block.prev_block_hash,
'timestamp': _block.time_stamp
},
'transactions': transactions
}
request = convert_params(request, ParamType.invoke)
stub = StubCollection().icon_score_stubs[ChannelProperty().name]
response = stub.sync_task().invoke(request)
response_to_json_query(response)
_block.commit_state[
ChannelProperty().name] = response['stateRootHash']
return response["txResults"]
else:
stub = StubCollection().score_stubs[ChannelProperty().name]
response = stub.sync_task().score_invoke(_block)
if response.code == message_code.Response.success:
commit_state = pickle.loads(response.object)
_block.commit_state = commit_state
return json.loads(response.meta)
return None
def score_change_block_hash(self, block_height, old_block_hash,
new_block_hash):
change_hash_info = json.dumps({
"block_height": block_height,
"old_block_hash": old_block_hash,
"new_block_hash": new_block_hash
})
if not conf.USE_EXTERNAL_SCORE:
stub = StubCollection().score_stubs[ChannelProperty().name]
stub.sync_task().change_block_hash(change_hash_info)
def score_write_precommit_state(self, block: Block):
logging.debug(
f"call score commit {ChannelProperty().name} {block.height} {block.block_hash}"
)
if conf.USE_EXTERNAL_SCORE:
request = {
"blockHeight": block.height,
"blockHash": block.block_hash,
}
request = convert_params(request, ParamType.write_precommit_state)
stub = StubCollection().icon_score_stubs[ChannelProperty().name]
stub.sync_task().write_precommit_state(request)
return True
else:
block_commit_info = json.dumps({
"block_height": block.height,
"block_hash": block.block_hash
})
stub = StubCollection().score_stubs[ChannelProperty().name]
response = stub.sync_task().write_precommit_state(
block_commit_info)
if response.code == message_code.Response.success:
return True
else:
logging.error(f"score db commit fail cause {response.message}")
return False
def score_remove_precommit_state(self, block: Block):
if conf.USE_EXTERNAL_SCORE:
request = {
"blockHeight": block.height,
"blockHash": block.block_hash,
}
request = convert_params(request, ParamType.remove_precommit_state)
stub = StubCollection().icon_score_stubs[ChannelProperty().name]
stub.sync_task().remove_precommit_state(request)
return True
else:
invoke_fail_info = json.dumps({
"block_height": block.height,
"block_hash": block.block_hash
})
stub = StubCollection().score_stubs[ChannelProperty().name]
stub.sync_task().remove_precommit_state(invoke_fail_info)
return True
def get_object_has_queue_by_consensus(self):
if conf.CONSENSUS_ALGORITHM == conf.ConsensusAlgorithm.lft:
object_has_queue = self.__consensus
else:
object_has_queue = self.__block_manager
return object_has_queue