async def _persist_headers_if_tip_too_old(self) -> None:
tip = await self._db.coro_get_canonical_head()
if self._is_header_eligible_to_beam_sync(tip):
self._force_end_block_number = tip.block_number + 1
self.logger.info(
"Tip is recent enough, syncing from last synced header at %s",
tip)
else:
self.logger.warning(
"Tip %s is too far behind to Beam Sync, skipping ahead...",
tip)
async for persist_info in persist_headers(self.logger, self._db,
self._header_syncer,
self._exit_if_launchpoint):
if len(persist_info.new_canon_headers):
head = persist_info.new_canon_headers[-1]
else:
head = await self._db.coro_get_canonical_head()
self.logger.info(
"Imported %d headers in %0.2f seconds, new head: %s",
len(persist_info.imported_headers),
persist_info.elapsed_time,
head,
)
async def _persist_headers(self) -> None:
async for persist_info in persist_headers(self.logger, self._db,
self._header_syncer):
if len(persist_info.new_canon_headers):
head = persist_info.new_canon_headers[-1]
else:
head = await self._db.coro_get_canonical_head()
self.logger.info(
"Imported %d headers in %0.2f seconds, new head: %s",
len(persist_info.imported_headers),
persist_info.elapsed_time,
head,
)
async def _persist_headers(self, gap_end: BlockNumber) -> None:
async def _is_at_end_of_gap(headers: Sequence[BlockHeaderAPI]) -> bool:
all_headers_too_advanced = headers[0].block_number > gap_end
if all_headers_too_advanced:
self.manager.cancel()
return True
else:
return False
try:
async for persist_info in persist_headers(self.logger, self._db,
self._header_syncer,
_is_at_end_of_gap):
self.logger.info(
"Imported %d gap headers from %s to %s in %0.2f seconds,",
len(persist_info.imported_headers),
persist_info.imported_headers[0],
persist_info.imported_headers[-1],
persist_info.elapsed_time,
)
except CheckpointsMustBeCanonical as err:
self.logger.warning(
"Attempted to fill gap with invalid header: %s", err)
self.manager.cancel()