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use multi_get for fetching transactions #25

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jackrobison merged 5 commits from multiget-transactions into master 2022-04-16 17:19:13 +02:00
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1 changed files with 12 additions and 1 deletions
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13
scribe/db/db.py
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@ -1005,13 +1005,24 @@ class HubDB:
await asyncio.sleep(0)
if needed_confirmed:
needed_heights = set()
tx_heights_and_positions = {}
for (tx_hash_bytes, tx_num), tx in zip(needed_confirmed, await run_in_executor(
self._executor, self.prefix_db.tx.multi_get, [(tx_hash,) for tx_hash, _ in needed_confirmed],
True, False)):
tx_height = bisect_right(self.tx_counts, tx_num)
needed_heights.add(tx_height)
tx_pos = tx_num - self.tx_counts[tx_height - 1]
tx_heights_and_positions[tx_hash_bytes] = (tx, tx_num, tx_height, tx_pos)
sorted_heights = list(sorted(needed_heights))
block_txs = await run_in_executor(
self._executor, self.prefix_db.block_txs.multi_get, [(height,) for height in sorted_heights]
)
block_txs = {height: v.tx_hashes for height, v in zip(sorted_heights, block_txs)}
for tx_hash_bytes, (tx, tx_num, tx_height, tx_pos) in tx_heights_and_positions.items():
branch, root = self.merkle.branch_and_root(
self.get_block_txs(tx_height), tx_pos
block_txs[tx_height], tx_pos
)
merkle = {
'block_height': tx_height,