def get_chain_head(self):
request = consensus_pb2.ConsensusChainHeadGetRequest()
response_type = consensus_pb2.ConsensusChainHeadGetResponse
response = self._send(
request=request,
message_type=Message.CONSENSUS_CHAIN_HEAD_GET_REQUEST,
response_type=response_type)
status = response.status
if status == response_type.NO_CHAIN_HEAD:
raise exceptions.NoChainHead()
if status != response_type.OK:
raise exceptions.ReceiveError(
'Failed with status {}'.format(status))
return Block(response.block)
def get_chain_head(self, parent_id=None, new_parent_id=None, is_new=False):
request = consensus_pb2.ConsensusChainHeadGetRequest(
parent_id=parent_id, new_parent_id=new_parent_id, is_new=is_new)
response_type = consensus_pb2.ConsensusChainHeadGetResponse
response = self._send(
request=request,
message_type=Message.CONSENSUS_CHAIN_HEAD_GET_REQUEST,
response_type=response_type)
status = response.status
if status == response_type.NO_CHAIN_HEAD:
raise exceptions.NoChainHead()
if status == response_type.TOO_MANY_BRANCH:
raise exceptions.TooManyBranch()
if status != response_type.OK:
raise exceptions.ReceiveError(
'Failed with status {}'.format(status))
#LOGGER.debug('get_chain_head: block=%s',response.block)
return Block(response.block)