def check_block(self, num, block):
"""Handle a successful or failed block fetch.
If an expected block was not available, we add a backwards
drift to the internal schedule. If it was successfully fetched,
we need to inspect it for missed blocks and adjust our timing
to account for them."""
if block:
self._drift_forward()
date = block_date(block)
self._check_missing(num, self._last_date, date)
self._check_head_date(num, date)
self._last_date = date
else:
self._drift_backward()
log.info("block %d not available. head:%s drift:%fs", num,
self._head_num, self._drift)
def test_block_date():
block = dict(timestamp='2018-03-16T10:08:42')
assert block_date(block) == datetime(2018, 3, 16, 10, 8, 42)