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read history in one loop

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Jack Robison 2020-06-15 15:57:51 -04:00
parent fc9023386c
commit 6c28713a4c
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1 changed files with 14 additions and 3 deletions
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17
lbry/wallet/server/leveldb.py
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@ -454,9 +454,20 @@ class LevelDB:
limit to None to get them all.
"""
def read_history():
tx_nums = list(self.history.get_txnums(hashX, limit))
fs_tx_hash = self.fs_tx_hash
return [fs_tx_hash(tx_num) for tx_num in tx_nums]
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.hashes_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
while True:
history = await asyncio.get_event_loop().run_in_executor(self.executor, read_history)