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use write_batch

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Jack Robison 2020-11-19 18:37:49 -05:00
parent 1b4ccad938
commit f2fd42b47a
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1 changed files with 22 additions and 16 deletions
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38
lbry/wallet/server/leveldb.py
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@ -279,32 +279,38 @@ class LevelDB:
b''.join(hashes for hashes, _ in flush_data.block_txs)
) // 32 == flush_data.tx_count - prior_tx_count
# Write the headers, tx counts, and tx hashes
# Write the headers
start_time = time.perf_counter()
with self.headers_db.write_batch() as batch:
batch_put = batch.put
for i, header in enumerate(flush_data.headers):
batch_put(HEADER_PREFIX + util.pack_be_uint64(self.fs_height + i + 1), header)
flush_data.headers.clear()
height_start = self.fs_height + 1
tx_num = prior_tx_count
for header, block_hash, (tx_hashes, txs) in zip(
flush_data.headers, flush_data.block_hashes, flush_data.block_txs):
tx_count = self.tx_counts[height_start]
self.headers_db.put(HEADER_PREFIX + util.pack_be_uint64(height_start), header)
self.tx_db.put(BLOCK_HASH_PREFIX + util.pack_be_uint64(height_start), block_hash[::-1])
self.tx_db.put(TX_COUNT_PREFIX + util.pack_be_uint64(height_start), util.pack_be_uint64(tx_count))
height_start += 1
offset = 0
while offset < len(tx_hashes):
self.tx_db.put(TX_HASH_PREFIX + util.pack_be_uint64(tx_num), tx_hashes[offset:offset+32])
self.tx_db.put(TX_NUM_PREFIX + tx_hashes[offset:offset+32], util.pack_be_uint64(tx_num))
self.tx_db.put(TX_PREFIX + tx_hashes[offset:offset+32], txs[offset // 32])
tx_num += 1
offset += 32
with self.tx_db.write_batch() as batch:
batch_put = batch.put
for block_hash, (tx_hashes, txs) in zip(flush_data.block_hashes, flush_data.block_txs):
tx_count = self.tx_counts[height_start]
batch_put(BLOCK_HASH_PREFIX + util.pack_be_uint64(height_start), block_hash[::-1])
batch_put(TX_COUNT_PREFIX + util.pack_be_uint64(height_start), util.pack_be_uint64(tx_count))
height_start += 1
offset = 0
while offset < len(tx_hashes):
batch_put(TX_HASH_PREFIX + util.pack_be_uint64(tx_num), tx_hashes[offset:offset+32])
batch_put(TX_NUM_PREFIX + tx_hashes[offset:offset+32], util.pack_be_uint64(tx_num))
batch_put(TX_PREFIX + tx_hashes[offset:offset+32], txs[offset // 32])
tx_num += 1
offset += 32
flush_data.block_txs.clear()
flush_data.block_hashes.clear()
self.fs_height = flush_data.height
self.fs_tx_count = flush_data.tx_count
flush_data.headers.clear()
elapsed = time.perf_counter() - start_time
self.logger.info(f'flushed filesystem data in {elapsed:.2f}s')