forked from LBRYCommunity/lbry-sdk
48 lines
2.3 KiB
Python
48 lines
2.3 KiB
Python
import sqlite3
|
|
import logging
|
|
import os
|
|
from lbry.blob.blob_info import BlobInfo
|
|
from lbry.stream.descriptor import StreamDescriptor
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
def do_migration(conf):
|
|
db_path = os.path.join(conf.data_dir, "lbrynet.sqlite")
|
|
blob_dir = os.path.join(conf.data_dir, "blobfiles")
|
|
connection = sqlite3.connect(db_path)
|
|
cursor = connection.cursor()
|
|
|
|
query = "select stream_name, stream_key, suggested_filename, sd_hash, stream_hash from stream"
|
|
streams = cursor.execute(query).fetchall()
|
|
|
|
blobs = cursor.execute("select s.stream_hash, s.position, s.iv, b.blob_hash, b.blob_length from stream_blob s "
|
|
"left outer join blob b ON b.blob_hash=s.blob_hash order by s.position").fetchall()
|
|
blobs_by_stream = {}
|
|
for stream_hash, position, iv, blob_hash, blob_length in blobs:
|
|
blobs_by_stream.setdefault(stream_hash, []).append(BlobInfo(position, blob_length or 0, iv, blob_hash))
|
|
|
|
for stream_name, stream_key, suggested_filename, sd_hash, stream_hash in streams:
|
|
sd = StreamDescriptor(None, blob_dir, stream_name, stream_key, suggested_filename,
|
|
blobs_by_stream[stream_hash], stream_hash, sd_hash)
|
|
if sd_hash != sd.calculate_sd_hash():
|
|
log.info("Stream for descriptor %s is invalid, cleaning it up", sd_hash)
|
|
blob_hashes = [blob.blob_hash for blob in blobs_by_stream[stream_hash]]
|
|
delete_stream(cursor, stream_hash, sd_hash, blob_hashes, blob_dir)
|
|
|
|
connection.commit()
|
|
connection.close()
|
|
|
|
|
|
def delete_stream(transaction, stream_hash, sd_hash, blob_hashes, blob_dir):
|
|
transaction.execute("delete from content_claim where stream_hash=? ", (stream_hash,))
|
|
transaction.execute("delete from file where stream_hash=? ", (stream_hash, ))
|
|
transaction.execute("delete from stream_blob where stream_hash=?", (stream_hash, ))
|
|
transaction.execute("delete from stream where stream_hash=? ", (stream_hash, ))
|
|
transaction.execute("delete from blob where blob_hash=?", (sd_hash, ))
|
|
for blob_hash in blob_hashes:
|
|
transaction.execute("delete from blob where blob_hash=?", (blob_hash, ))
|
|
file_path = os.path.join(blob_dir, blob_hash)
|
|
if os.path.isfile(file_path):
|
|
os.unlink(file_path)
|