faster fs_transactions
This commit is contained in:
Jack Robison
parent
61b4a492c3
commit
2318e6d8e9
|
|
@ -94,8 +94,7 @@ class LevelDB:
|
|||
self.headers_db = None
|
||||
self.tx_db = None
|
||||
|
||||
self._block_txs_cache = pylru.lrucache(50000)
|
||||
self._merkle_tx_cache = pylru.lrucache(100000)
|
||||
self._tx_and_merkle_cache = pylru.lrucache(100000)
|
||||
self.total_transactions = None
|
||||
|
||||
async def _read_tx_counts(self):
|
||||
|
|
@ -147,7 +146,7 @@ class LevelDB:
|
|||
|
||||
async def _open_dbs(self, for_sync, compacting):
|
||||
if self.executor is None:
|
||||
self.executor = ThreadPoolExecutor(max(1, os.cpu_count() - 1))
|
||||
self.executor = ThreadPoolExecutor(1)
|
||||
coin_path = os.path.join(self.env.db_dir, 'COIN')
|
||||
if not os.path.isfile(coin_path):
|
||||
with util.open_file(coin_path, create=True) as f:
|
||||
|
|
@ -470,76 +469,52 @@ class LevelDB:
|
|||
return None, tx_height
|
||||
return self.total_transactions[tx_num], tx_height
|
||||
|
||||
async def tx_merkle(self, tx_num, tx_height):
|
||||
if tx_height == -1:
|
||||
return {
|
||||
'block_height': -1
|
||||
}
|
||||
tx_counts = self.tx_counts
|
||||
tx_pos = tx_num - tx_counts[tx_height - 1]
|
||||
|
||||
def _update_block_txs_cache():
|
||||
block_txs = list(self.tx_db.iterator(
|
||||
start=TX_HASH_PREFIX + util.pack_be_uint64(tx_counts[tx_height - 1]),
|
||||
stop=None if tx_height + 1 == len(tx_counts) else
|
||||
TX_HASH_PREFIX + util.pack_be_uint64(tx_counts[tx_height]), include_key=False
|
||||
))
|
||||
if tx_height + 100 > self.db_height:
|
||||
return block_txs
|
||||
self._block_txs_cache[tx_height] = block_txs
|
||||
|
||||
uncached = None
|
||||
if (tx_num, tx_height) in self._merkle_tx_cache:
|
||||
return self._merkle_tx_cache[(tx_num, tx_height)]
|
||||
if tx_height not in self._block_txs_cache:
|
||||
uncached = await asyncio.get_event_loop().run_in_executor(self.executor, _update_block_txs_cache)
|
||||
block_txs = self._block_txs_cache.get(tx_height, uncached)
|
||||
branch, root = self.merkle.branch_and_root(block_txs, tx_pos)
|
||||
merkle = {
|
||||
'block_height': tx_height,
|
||||
'merkle': [
|
||||
hash_to_hex_str(hash)
|
||||
for hash in branch
|
||||
],
|
||||
'pos': tx_pos
|
||||
}
|
||||
if tx_height + 100 < self.db_height:
|
||||
self._merkle_tx_cache[(tx_num, tx_height)] = merkle
|
||||
return merkle
|
||||
|
||||
def _fs_transactions(self, txids: Iterable[str]) -> List[Tuple[str, Optional[str], int, int]]:
|
||||
def _fs_transactions(self, txids: Iterable[str]):
|
||||
unpack_be_uint64 = util.unpack_be_uint64
|
||||
tx_counts = self.tx_counts
|
||||
tx_db_get = self.tx_db.get
|
||||
tx_infos = []
|
||||
tx_cache = self._tx_and_merkle_cache
|
||||
|
||||
tx_infos = {}
|
||||
|
||||
for tx_hash in txids:
|
||||
tx_hash_bytes = bytes.fromhex(tx_hash)[::-1]
|
||||
tx_num = tx_db_get(TX_NUM_PREFIX + tx_hash_bytes)
|
||||
tx = None
|
||||
tx_height = -1
|
||||
if tx_num is not None:
|
||||
tx_num = unpack_be_uint64(tx_num)
|
||||
tx_height = bisect_right(tx_counts, tx_num)
|
||||
if tx_height < self.db_height:
|
||||
tx = tx_db_get(TX_PREFIX + tx_hash_bytes)
|
||||
tx_infos.append((tx_hash, None if not tx else tx.hex(), tx_num, tx_height))
|
||||
|
||||
cached_tx = tx_cache.get(tx_hash)
|
||||
if cached_tx:
|
||||
tx, merkle = cached_tx
|
||||
else:
|
||||
tx_hash_bytes = bytes.fromhex(tx_hash)[::-1]
|
||||
tx_num = tx_db_get(TX_NUM_PREFIX + tx_hash_bytes)
|
||||
tx = None
|
||||
tx_height = -1
|
||||
if tx_num is not None:
|
||||
tx_num = unpack_be_uint64(tx_num)
|
||||
tx_height = bisect_right(tx_counts, tx_num)
|
||||
if tx_height < self.db_height:
|
||||
tx = tx_db_get(TX_PREFIX + tx_hash_bytes)
|
||||
if tx_height == -1:
|
||||
merkle = {
|
||||
'block_height': -1
|
||||
}
|
||||
else:
|
||||
tx_pos = tx_num - tx_counts[tx_height - 1]
|
||||
branch, root = self.merkle.branch_and_root(
|
||||
self.total_transactions[tx_counts[tx_height - 1]:tx_counts[tx_height]], tx_pos
|
||||
)
|
||||
merkle = {
|
||||
'block_height': tx_height,
|
||||
'merkle': [
|
||||
hash_to_hex_str(hash)
|
||||
for hash in branch
|
||||
],
|
||||
'pos': tx_pos
|
||||
}
|
||||
if tx_height + 10 < self.db_height:
|
||||
tx_cache[tx_hash] = tx, merkle
|
||||
tx_infos[tx_hash] = (None if not tx else tx.hex(), merkle)
|
||||
return tx_infos
|
||||
|
||||
async def fs_transactions(self, txids):
|
||||
txs = await asyncio.get_event_loop().run_in_executor(
|
||||
self.executor, self._fs_transactions, txids
|
||||
)
|
||||
unsorted_result = {}
|
||||
|
||||
async def add_result(item):
|
||||
_txid, _tx, _tx_num, _tx_height = item
|
||||
unsorted_result[_txid] = (_tx, await self.tx_merkle(_tx_num, _tx_height))
|
||||
|
||||
if txs:
|
||||
await asyncio.gather(*map(add_result, txs))
|
||||
return {txid: unsorted_result[txid] for txid, _, _, _ in txs}
|
||||
return await asyncio.get_event_loop().run_in_executor(self.executor, self._fs_transactions, txids)
|
||||
|
||||
async def fs_block_hashes(self, height, count):
|
||||
if height + count > len(self.headers):
|
||||
|
|
@ -553,28 +528,10 @@ class LevelDB:
|
|||
transactions. By default returns at most 1000 entries. Set
|
||||
limit to None to get them all.
|
||||
"""
|
||||
# def read_history():
|
||||
# hashx_history = []
|
||||
# for key, hist in self.history.db.iterator(prefix=hashX):
|
||||
# a = array.array('I')
|
||||
# a.frombytes(hist)
|
||||
# for tx_num in a:
|
||||
# tx_height = bisect_right(self.tx_counts, tx_num)
|
||||
# if tx_height > self.db_height:
|
||||
# tx_hash = None
|
||||
# else:
|
||||
# tx_hash = self.tx_db.get(TX_HASH_PREFIX + util.pack_be_uint64(tx_num))
|
||||
#
|
||||
# hashx_history.append((tx_hash, tx_height))
|
||||
# if limit and len(hashx_history) >= limit:
|
||||
# return hashx_history
|
||||
# return hashx_history
|
||||
|
||||
def read_history():
|
||||
db_height = self.db_height
|
||||
tx_counts = self.tx_counts
|
||||
tx_db_get = self.tx_db.get
|
||||
pack_be_uint64 = util.pack_be_uint64
|
||||
|
||||
cnt = 0
|
||||
txs = []
|
||||
|
|
|
|||
Loading…
Reference in a new issue