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Merge pull request #2725 from lbryio/stream-manager-startup

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faster stream manager startup
This commit is contained in:
Jack Robison 2020-01-13 18:09:49 -05:00 committed by GitHub
commit 9371122bed
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2 changed files with 27 additions and 23 deletions
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47
lbry/extras/daemon/storage.py
View file

@ -136,18 +136,13 @@ def _get_lbry_file_stream_dict(rowid, added_on, stream_hash, file_name, download
def get_all_lbry_files(transaction: sqlite3.Connection) -> typing.List[typing.Dict]:
files = []
signed_claims = {}
stream_hashes_and_bt_infohashes = transaction.execute("select stream_hash, bt_infohash from file").fetchall()
stream_hashes = tuple(
stream_hash for stream_hash, _ in stream_hashes_and_bt_infohashes if stream_hash is not None
)
for (rowid, stream_hash, _, file_name, download_dir, data_rate, status, saved_file, raw_content_fee,
added_on, _, sd_hash, stream_key, stream_name, suggested_file_name, *claim_args) in _batched_select(
transaction, "select file.rowid, file.*, stream.*, c.* "
added_on, _, sd_hash, stream_key, stream_name, suggested_file_name, *claim_args) in transaction.execute(
"select file.rowid, file.*, stream.*, c.* "
"from file inner join stream on file.stream_hash=stream.stream_hash "
"inner join content_claim cc on file.stream_hash=cc.stream_hash "
"inner join claim c on cc.claim_outpoint=c.claim_outpoint "
"where file.stream_hash in {} "
"order by c.rowid desc", stream_hashes):
"order by c.rowid desc").fetchall():
claim = StoredContentClaim(*claim_args)
if claim.channel_claim_id:
if claim.channel_claim_id not in signed_claims:
@ -539,22 +534,30 @@ class SQLiteStorage(SQLiteMixin):
Update files that have been removed from the downloads directory since the last run
"""
def update_manually_removed_files(transaction: sqlite3.Connection):
removed = []
for (stream_hash, download_directory, file_name) in transaction.execute(
"select stream_hash, download_directory, file_name from file where saved_file=1 "
files = {}
query = "select stream_hash, download_directory, file_name from file where saved_file=1 " \
"and stream_hash is not null"
).fetchall():
if download_directory and file_name and os.path.isfile(
os.path.join(binascii.unhexlify(download_directory).decode(),
binascii.unhexlify(file_name).decode())):
continue
removed.append((stream_hash,))
for (stream_hash, download_directory, file_name) in transaction.execute(query).fetchall():
if download_directory and file_name:
files[stream_hash] = download_directory, file_name
return files
def detect_removed(files):
return [
stream_hash for stream_hash, (download_directory, file_name) in files.items()
if not os.path.isfile(os.path.join(binascii.unhexlify(download_directory).decode(),
binascii.unhexlify(file_name).decode()))
]
def update_db_removed(transaction: sqlite3.Connection, removed):
query = "update file set file_name=null, download_directory=null, saved_file=0 where stream_hash in {}"
for cur in _batched_select(transaction, query, removed):
cur.fetchall()
stream_and_file = await self.db.run(update_manually_removed_files)
removed = await self.loop.run_in_executor(None, detect_removed, stream_and_file)
if removed:
transaction.executemany(
"update file set file_name=null, download_directory=null, saved_file=0 where stream_hash=?",
removed
).fetchall()
return await self.db.run(update_manually_removed_files)
await self.db.run(update_db_removed, removed)
def get_all_lbry_files(self) -> typing.Awaitable[typing.List[typing.Dict]]:
return self.db.run(get_all_lbry_files)

1
lbry/stream/stream_manager.py
View file

@ -144,6 +144,7 @@ class StreamManager:
to_recover.append(file_info)
to_start.append(file_info)
if to_recover:
log.info("Recover %i files", len(to_recover))
await self.recover_streams(to_recover)
log.info("Initializing %i files", len(to_start))