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_get_compactify_hashX_history_ops

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Jack Robison 2022-04-06 22:00:30 -04:00
parent 8a2517aa36
commit d323edd252
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1 changed files with 19 additions and 15 deletions
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34
scribe/blockchain/service.py
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@ -1271,6 +1271,23 @@ class BlockchainProcessorService(BlockchainService):
status = sha256(history.encode())
self.db.prefix_db.hashX_mempool_status.stage_put((hashX,), (status,))
def _get_compactify_hashX_history_ops(self, height: int, hashX: bytes):
if height > self.env.reorg_limit: # compactify existing history
hist_txs = b''
# accumulate and delete all of the tx histories between height 1 and current - reorg_limit
for k, hist in self.db.prefix_db.hashX_history.iterate(
start=(hashX, 1), stop=(hashX, height - self.env.reorg_limit),
deserialize_key=False, deserialize_value=False):
hist_txs += hist
self.db.prefix_db.stage_raw_delete(k, hist)
if hist_txs:
# add the accumulated histories onto the existing compacted history at height 0
key = self.db.prefix_db.hashX_history.pack_key(hashX, 0)
existing = self.db.prefix_db.get(key)
if existing is not None:
self.db.prefix_db.stage_raw_delete(key, existing)
self.db.prefix_db.stage_raw_put(key, (existing or b'') + hist_txs)
def advance_block(self, block: Block):
height = self.height + 1
# print("advance ", height)
@ -1364,24 +1381,11 @@ class BlockchainProcessorService(BlockchainService):
self.db.prefix_db.stage_raw_delete(k, v)
for hashX, new_history in self.hashXs_by_tx.items():
# TODO: combine this with compaction so that we only read the history once
self._get_update_hashX_status_ops(
hashX, [(self.pending_transactions[tx_num], height) for tx_num in new_history]
)
if height > self.env.reorg_limit: # compactify existing history
hist_txs = b''
# accumulate and delete all of the tx histories between height 1 and current - reorg_limit
for k, hist in self.db.prefix_db.hashX_history.iterate(
start=(hashX, 1), stop=(hashX, height - self.env.reorg_limit),
deserialize_key=False, deserialize_value=False):
hist_txs += hist
self.db.prefix_db.stage_raw_delete(k, hist)
if hist_txs:
# add the accumulated histories onto the existing compacted history at height 0
key = self.db.prefix_db.hashX_history.pack_key(hashX, 0)
existing = self.db.prefix_db.get(key)
if existing is not None:
self.db.prefix_db.stage_raw_delete(key, existing)
self.db.prefix_db.stage_raw_put(key, (existing or b'') + hist_txs)
self._get_compactify_hashX_history_ops(height, hashX)
if not new_history:
continue
self.db.prefix_db.hashX_history.stage_put(key_args=(hashX, height), value_args=(new_history,))