def __precommit_block_request(self, peer_stub, last_block_height):
"""request precommit block by gRPC
:param peer_stub:
:param block_height:
:return block, max_block_height, response_code
"""
response = peer_stub.GetPrecommitBlock(
loopchain_pb2.PrecommitBlockRequest(
last_block_height=last_block_height,
channel=self.__channel_name), conf.GRPC_TIMEOUT)
if response.block == b"":
return None, response.response_code, response.response_message
else:
try:
precommit_block = self.__blockchain.block_loads(response.block)
except Exception as e:
traceback.print_exc()
raise exception.BlockError(
f"Received block is invalid: original exception={e}")
# util.logger.spam(
# f"GetPrecommitBlock:response::{response.response_code}/{response.response_message}/"
# f"{precommit_block}/{precommit_block.confirmed_transaction_list}")
return precommit_block, response.response_code, response.response_message
def __block_request_by_voter(self, block_height, peer_stub):
response = peer_stub.BlockSync(
loopchain_pb2.BlockSyncRequest(block_height=block_height,
channel=self.__channel_name),
conf.GRPC_TIMEOUT)
if response.response_code == message_code.Response.fail_no_confirm_info:
raise NoConfirmInfo(
f"The peer has not confirm_info of the block by height({block_height})."
)
else:
try:
block = self.blockchain.block_loads(response.block)
except Exception as e:
traceback.print_exc()
raise exception.BlockError(
f"Received block is invalid: original exception={e}")
votes_dumped: bytes = response.confirm_info
try:
votes_serialized = json.loads(votes_dumped)
version = self.blockchain.block_versioner.get_version(
block_height)
votes = Votes.get_block_votes_class(version).deserialize_votes(
votes_serialized)
except json.JSONDecodeError:
votes = votes_dumped
return block, response.max_block_height, response.unconfirmed_block_height, votes, response.response_code
def __block_request(self, peer_stub, block_height):
"""request block by gRPC or REST
:param peer_stub:
:param block_height:
:return block, max_block_height, confirm_info, response_code
"""
if ObjectManager().channel_service.is_support_node_function(
conf.NodeFunction.Vote):
response = peer_stub.BlockSync(
loopchain_pb2.BlockSyncRequest(block_height=block_height,
channel=self.__channel_name),
conf.GRPC_TIMEOUT)
try:
block = self.__blockchain.block_loads(response.block)
except Exception as e:
traceback.print_exc()
raise exception.BlockError(
f"Received block is invalid: original exception={e}")
return block, response.max_block_height, response.unconfirmed_block_height,\
response.confirm_info, response.response_code
else:
# request REST(json-rpc) way to RS peer
return self.__block_request_by_citizen(
block_height,
ObjectManager().channel_service.radio_station_stub)