async def handle_new_minor_block_header_list_command(self, _op, cmd, _rpc_id):
# TODO: allow multiple headers if needed
if len(cmd.minor_block_header_list) != 1:
self.close_with_error("minor block header list must have only one header")
return
for m_header in cmd.minor_block_header_list:
if m_header.branch != self.shard_state.branch:
self.close_with_error("incorrect branch")
return
if self.best_root_block_header_observed:
# check root header is not decreasing
if (
cmd.root_block_header.total_difficulty
< self.best_root_block_header_observed.total_difficulty
):
return self.close_with_error(
"best observed root header total_difficulty is decreasing {} < {}".format(
cmd.root_block_header.total_difficulty,
self.best_root_block_header_observed.total_difficulty,
)
)
if (
cmd.root_block_header.total_difficulty
== self.best_root_block_header_observed.total_difficulty
):
if cmd.root_block_header != self.best_root_block_header_observed:
return self.close_with_error(
"best observed root header changed with same total_difficulty {}".format(
self.best_root_block_header_observed.total_difficulty
)
)
# check minor header is not decreasing
if m_header.height < self.best_minor_block_header_observed.height:
return self.close_with_error(
"best observed minor header is decreasing {} < {}".format(
m_header.height,
self.best_minor_block_header_observed.height,
)
)
self.best_root_block_header_observed = cmd.root_block_header
self.best_minor_block_header_observed = m_header
# Do not download if the new header is not higher than the current tip
if self.shard_state.header_tip.height >= m_header.height:
return
Logger.info_every_sec(
"[{}] received new tip with height {}".format(
m_header.branch.to_str(), m_header.height
),
5
)
self.shard.synchronizer.add_task(m_header, self)
def _log_status(block: Block):
is_root = isinstance(block, RootBlock)
shard = "R" if is_root else block.header.branch.get_shard_id()
count = len(block.minor_block_header_list) if is_root else len(block.tx_list)
elapsed = time.time() - block.header.create_time
Logger.info_every_sec(
"[{}] {} [{}] ({:.2f}) {}".format(
shard,
block.header.height,
count,
elapsed,
block.header.get_hash().hex(),
),
60,
)
