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extract min_prefix_colliding_bits to a contanst

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This commit is contained in:
Victor Shyba 2022-02-19 03:09:29 -03:00
parent 4be346d0bb
commit 74bf8c551b
1 changed files with 9 additions and 5 deletions
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14
lbry/extras/daemon/components.py
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@ -381,6 +381,7 @@ class FileManagerComponent(Component):
class BackgroundDownloaderComponent(Component):
MIN_PREFIX_COLLIDING_BITS = 8
component_name = BACKGROUND_DOWNLOADER_COMPONENT
depends_on = [DATABASE_COMPONENT, BLOB_COMPONENT, DISK_SPACE_COMPONENT]
@ -412,11 +413,14 @@ class BackgroundDownloaderComponent(Component):
while True:
self.space_available = await self.space_manager.get_free_space_mb(True)
if not self.is_busy and self.space_available > 10:
blob_hash = next((key.hex() for key in self.dht_node.stored_blob_hashes if
key[0] == self.dht_node.protocol.node_id[0]
and key.hex() not in self.blob_manager.completed_blob_hashes), None)
if blob_hash:
self.ongoing_download = asyncio.create_task(self.background_downloader.download_blobs(blob_hash))
node_id_prefix = int.from_bytes(self.dht_node.protocol.node_id[:4], "big")
for hash in self.dht_node.stored_blob_hashes:
colliding_bits = 16 - int(node_id_prefix ^ int.from_bytes(hash[:4], "big")).bit_length()
if hash.hex() in self.blob_manager.completed_blob_hashes:
continue
if colliding_bits >= self.MIN_PREFIX_COLLIDING_BITS:
self.ongoing_download = asyncio.create_task(self.background_downloader.download_blobs(hash))
break
await asyncio.sleep(self.download_loop_delay_seconds)
async def start(self):