def clear_excess_undo_info(self):
'''Clear excess undo info. Only most recent N are kept.'''
prefix = b'U'
min_height = self.min_undo_height(self.db_height)
keys = []
for key, _hist in self.utxo_db.iterator(prefix=prefix):
height, = unpack_be_uint32(key[-4:])
if height >= min_height:
break
keys.append(key)
if keys:
with self.utxo_db.write_batch() as batch:
for key in keys:
batch.delete(key)
self.logger.info(f'deleted {len(keys):,d} stale undo entries')
# delete old block files
prefix = self.raw_block_prefix()
paths = [
path for path in glob(f'{prefix}[0-9]*')
if len(path) > len(prefix) and int(path[len(prefix):]) < min_height
]
if paths:
for path in paths:
try:
os.remove(path)
except FileNotFoundError:
pass
self.logger.info(f'deleted {len(paths):,d} stale block files')
def clear_excess_undo_info(self):
'''Clear excess undo info. Only most recent N are kept.'''
prefix = b'U'
min_height = self.min_undo_height(self.state.height)
keys = []
for key, _hist in self.utxo_db.iterator(prefix=prefix):
height, = unpack_be_uint32(key[-4:])
if height >= min_height:
break
keys.append(key)
if keys:
with self.utxo_db.write_batch() as batch:
for key in keys:
batch.delete(key)
self.logger.info(f'deleted {len(keys):,d} stale undo entries')