354 lines
15 KiB
Python
354 lines
15 KiB
Python
import logging
|
|
import sqlite3
|
|
import os
|
|
from twisted.internet import defer
|
|
from twisted.python.failure import Failure
|
|
from twisted.enterprise import adbapi
|
|
from lbrynet.core.Error import DuplicateStreamHashError, NoSuchStreamHash, NoSuchSDHash
|
|
from lbrynet.core.sqlite_helpers import rerun_if_locked
|
|
from lbrynet.file_manager.EncryptedFileDownloader import ManagedEncryptedFileDownloader
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class DBEncryptedFileMetadataManager(object):
|
|
"""Store and provide access to LBRY file metadata using sqlite"""
|
|
|
|
def __init__(self, db_dir, file_name=None):
|
|
self.db_dir = db_dir
|
|
self._db_file_name = file_name or "lbryfile_info.db"
|
|
self.db_conn = adbapi.ConnectionPool("sqlite3", os.path.join(self.db_dir,
|
|
self._db_file_name),
|
|
check_same_thread=False)
|
|
|
|
def setup(self):
|
|
return self._open_db()
|
|
|
|
def stop(self):
|
|
self.db_conn.close()
|
|
return defer.succeed(True)
|
|
|
|
def get_all_streams(self):
|
|
return self._get_all_streams()
|
|
|
|
def save_stream(self, stream_hash, file_name, key, suggested_file_name, blobs):
|
|
d = self._store_stream(stream_hash, file_name, key, suggested_file_name)
|
|
d.addCallback(lambda _: self.add_blobs_to_stream(stream_hash, blobs))
|
|
return d
|
|
|
|
def get_stream_info(self, stream_hash):
|
|
return self._get_stream_info(stream_hash)
|
|
|
|
def check_if_stream_exists(self, stream_hash):
|
|
return self._check_if_stream_exists(stream_hash)
|
|
|
|
def delete_stream(self, stream_hash):
|
|
return self._delete_stream(stream_hash)
|
|
|
|
def add_blobs_to_stream(self, stream_hash, blobs):
|
|
return self._add_blobs_to_stream(stream_hash, blobs, ignore_duplicate_error=True)
|
|
|
|
def get_blobs_for_stream(self, stream_hash, start_blob=None,
|
|
end_blob=None, count=None, reverse=False):
|
|
log.debug("Getting blobs for stream %s. Count is %s", stream_hash, count)
|
|
|
|
def get_positions_of_start_and_end():
|
|
if start_blob is not None:
|
|
d1 = self._get_blob_num_by_hash(stream_hash, start_blob)
|
|
else:
|
|
d1 = defer.succeed(None)
|
|
if end_blob is not None:
|
|
d2 = self._get_blob_num_by_hash(stream_hash, end_blob)
|
|
else:
|
|
d2 = defer.succeed(None)
|
|
|
|
dl = defer.DeferredList([d1, d2])
|
|
|
|
def get_positions(results):
|
|
start_num = None
|
|
end_num = None
|
|
if results[0][0] is True:
|
|
start_num = results[0][1]
|
|
if results[1][0] is True:
|
|
end_num = results[1][1]
|
|
return start_num, end_num
|
|
|
|
dl.addCallback(get_positions)
|
|
return dl
|
|
|
|
def get_blob_infos(nums):
|
|
start_num, end_num = nums
|
|
return self._get_further_blob_infos(stream_hash, start_num, end_num,
|
|
count, reverse)
|
|
|
|
d = get_positions_of_start_and_end()
|
|
d.addCallback(get_blob_infos)
|
|
return d
|
|
|
|
def get_stream_of_blob(self, blob_hash):
|
|
return self._get_stream_of_blobhash(blob_hash)
|
|
|
|
def save_sd_blob_hash_to_stream(self, stream_hash, sd_blob_hash):
|
|
return self._save_sd_blob_hash_to_stream(stream_hash, sd_blob_hash)
|
|
|
|
def get_sd_blob_hashes_for_stream(self, stream_hash):
|
|
return self._get_sd_blob_hashes_for_stream(stream_hash)
|
|
|
|
def get_stream_hash_for_sd_hash(self, sd_hash):
|
|
return self._get_stream_hash_for_sd_blob_hash(sd_hash)
|
|
|
|
@staticmethod
|
|
def _create_tables(transaction):
|
|
transaction.execute("create table if not exists lbry_files (" +
|
|
" stream_hash text primary key, " +
|
|
" key text, " +
|
|
" stream_name text, " +
|
|
" suggested_file_name text" +
|
|
")")
|
|
transaction.execute("create table if not exists lbry_file_blobs (" +
|
|
" blob_hash text, " +
|
|
" stream_hash text, " +
|
|
" position integer, " +
|
|
" iv text, " +
|
|
" length integer, " +
|
|
" foreign key(stream_hash) references lbry_files(stream_hash)" +
|
|
")")
|
|
transaction.execute("create table if not exists lbry_file_descriptors (" +
|
|
" sd_blob_hash TEXT PRIMARY KEY, " +
|
|
" stream_hash TEXT, " +
|
|
" foreign key(stream_hash) references lbry_files(stream_hash)" +
|
|
")")
|
|
transaction.execute("create table if not exists lbry_file_options (" +
|
|
" blob_data_rate real, " +
|
|
" status text," +
|
|
" stream_hash text,"
|
|
" foreign key(stream_hash) references lbry_files(stream_hash)" +
|
|
")")
|
|
transaction.execute("create table if not exists lbry_file_metadata (" +
|
|
" lbry_file integer primary key, " +
|
|
" txid text, " +
|
|
" n integer, " +
|
|
" foreign key(lbry_file) references lbry_files(rowid)"
|
|
")")
|
|
|
|
def _open_db(self):
|
|
# check_same_thread=False is solely to quiet a spurious error that appears to be due
|
|
# to a bug in twisted, where the connection is closed by a different thread than the
|
|
# one that opened it. The individual connections in the pool are not used in multiple
|
|
# threads.
|
|
return self.db_conn.runInteraction(self._create_tables)
|
|
|
|
@rerun_if_locked
|
|
@defer.inlineCallbacks
|
|
def get_file_outpoint(self, rowid):
|
|
result = yield self.db_conn.runQuery("select txid, n from lbry_file_metadata "
|
|
"where lbry_file=?", (rowid, ))
|
|
response = None
|
|
if result:
|
|
txid, nout = result[0]
|
|
if txid is not None and nout is not None:
|
|
response = "%s:%i" % (txid, nout)
|
|
defer.returnValue(response)
|
|
|
|
@rerun_if_locked
|
|
@defer.inlineCallbacks
|
|
def save_outpoint_to_file(self, rowid, txid, nout):
|
|
existing_outpoint = yield self.get_file_outpoint(rowid)
|
|
if not existing_outpoint:
|
|
yield self.db_conn.runOperation("insert into lbry_file_metadata values "
|
|
"(?, ?, ?)", (rowid, txid, nout))
|
|
|
|
@rerun_if_locked
|
|
def _delete_stream(self, stream_hash):
|
|
d = self.db_conn.runQuery(
|
|
"select rowid, stream_hash from lbry_files where stream_hash = ?", (stream_hash,))
|
|
d.addCallback(
|
|
lambda result: result[0] if result else Failure(NoSuchStreamHash(stream_hash)))
|
|
|
|
def do_delete(transaction, row_id, s_h):
|
|
transaction.execute("delete from lbry_files where stream_hash = ?", (s_h,))
|
|
transaction.execute("delete from lbry_file_blobs where stream_hash = ?", (s_h,))
|
|
transaction.execute("delete from lbry_file_descriptors where stream_hash = ?", (s_h,))
|
|
transaction.execute("delete from lbry_file_metadata where lbry_file = ?", (row_id,))
|
|
|
|
d.addCallback(lambda (row_id, s_h): self.db_conn.runInteraction(do_delete, row_id, s_h))
|
|
return d
|
|
|
|
@rerun_if_locked
|
|
def _store_stream(self, stream_hash, name, key, suggested_file_name):
|
|
d = self.db_conn.runQuery("insert into lbry_files values (?, ?, ?, ?)",
|
|
(stream_hash, key, name, suggested_file_name))
|
|
|
|
def check_duplicate(err):
|
|
if err.check(sqlite3.IntegrityError):
|
|
raise DuplicateStreamHashError(stream_hash)
|
|
return err
|
|
|
|
d.addErrback(check_duplicate)
|
|
return d
|
|
|
|
@rerun_if_locked
|
|
def _get_all_streams(self):
|
|
d = self.db_conn.runQuery("select stream_hash from lbry_files")
|
|
d.addCallback(lambda results: [r[0] for r in results])
|
|
return d
|
|
|
|
@rerun_if_locked
|
|
def _get_stream_info(self, stream_hash):
|
|
def get_result(res):
|
|
if res:
|
|
return res[0]
|
|
else:
|
|
raise NoSuchStreamHash(stream_hash)
|
|
|
|
d = self.db_conn.runQuery(
|
|
"select key, stream_name, suggested_file_name from lbry_files where stream_hash = ?",
|
|
(stream_hash,))
|
|
d.addCallback(get_result)
|
|
return d
|
|
|
|
@rerun_if_locked
|
|
def _check_if_stream_exists(self, stream_hash):
|
|
d = self.db_conn.runQuery(
|
|
"select stream_hash from lbry_files where stream_hash = ?", (stream_hash,))
|
|
d.addCallback(lambda r: True if len(r) else False)
|
|
return d
|
|
|
|
@rerun_if_locked
|
|
def _get_blob_num_by_hash(self, stream_hash, blob_hash):
|
|
d = self.db_conn.runQuery(
|
|
"select position from lbry_file_blobs where stream_hash = ? and blob_hash = ?",
|
|
(stream_hash, blob_hash))
|
|
d.addCallback(lambda r: r[0][0] if len(r) else None)
|
|
return d
|
|
|
|
@rerun_if_locked
|
|
def _get_further_blob_infos(self, stream_hash, start_num, end_num, count=None, reverse=False):
|
|
params = []
|
|
q_string = "select * from ("
|
|
q_string += " select blob_hash, position, iv, length from lbry_file_blobs "
|
|
q_string += " where stream_hash = ? "
|
|
params.append(stream_hash)
|
|
if start_num is not None:
|
|
q_string += " and position > ? "
|
|
params.append(start_num)
|
|
if end_num is not None:
|
|
q_string += " and position < ? "
|
|
params.append(end_num)
|
|
q_string += " order by position "
|
|
if reverse is True:
|
|
q_string += " DESC "
|
|
if count is not None:
|
|
q_string += " limit ? "
|
|
params.append(count)
|
|
q_string += ") order by position"
|
|
# Order by position is done twice so that it always returns them from lowest position to
|
|
# greatest, but the limit by clause can select the 'count' greatest or 'count' least
|
|
return self.db_conn.runQuery(q_string, tuple(params))
|
|
|
|
@rerun_if_locked
|
|
def _add_blobs_to_stream(self, stream_hash, blob_infos, ignore_duplicate_error=False):
|
|
|
|
def add_blobs(transaction):
|
|
for blob_info in blob_infos:
|
|
try:
|
|
transaction.execute("insert into lbry_file_blobs values (?, ?, ?, ?, ?)",
|
|
(blob_info.blob_hash, stream_hash, blob_info.blob_num,
|
|
blob_info.iv, blob_info.length))
|
|
except sqlite3.IntegrityError:
|
|
if ignore_duplicate_error is False:
|
|
raise
|
|
|
|
return self.db_conn.runInteraction(add_blobs)
|
|
|
|
@rerun_if_locked
|
|
def _get_stream_of_blobhash(self, blob_hash):
|
|
d = self.db_conn.runQuery("select stream_hash from lbry_file_blobs where blob_hash = ?",
|
|
(blob_hash,))
|
|
d.addCallback(lambda r: r[0][0] if len(r) else None)
|
|
return d
|
|
|
|
@rerun_if_locked
|
|
def _save_sd_blob_hash_to_stream(self, stream_hash, sd_blob_hash):
|
|
d = self.db_conn.runOperation("insert or ignore into lbry_file_descriptors values (?, ?)",
|
|
(sd_blob_hash, stream_hash))
|
|
d.addCallback(lambda _: log.info("Saved sd blob hash %s to stream hash %s",
|
|
str(sd_blob_hash), str(stream_hash)))
|
|
return d
|
|
|
|
@rerun_if_locked
|
|
def _get_sd_blob_hashes_for_stream(self, stream_hash):
|
|
log.debug("Looking up sd blob hashes for stream hash %s", str(stream_hash))
|
|
d = self.db_conn.runQuery(
|
|
"select sd_blob_hash from lbry_file_descriptors where stream_hash = ?",
|
|
(stream_hash,))
|
|
d.addCallback(lambda results: [r[0] for r in results])
|
|
return d
|
|
|
|
@rerun_if_locked
|
|
def _get_stream_hash_for_sd_blob_hash(self, sd_blob_hash):
|
|
def _handle_result(result):
|
|
if not result:
|
|
raise NoSuchSDHash(sd_blob_hash)
|
|
return result[0][0]
|
|
|
|
log.debug("Looking up sd blob hashes for sd blob hash %s", str(sd_blob_hash))
|
|
d = self.db_conn.runQuery(
|
|
"select stream_hash from lbry_file_descriptors where sd_blob_hash = ?",
|
|
(sd_blob_hash,))
|
|
d.addCallback(_handle_result)
|
|
return d
|
|
|
|
# used by lbry file manager
|
|
@rerun_if_locked
|
|
def _save_lbry_file(self, stream_hash, data_payment_rate):
|
|
def do_save(db_transaction):
|
|
row = (data_payment_rate, ManagedEncryptedFileDownloader.STATUS_STOPPED, stream_hash)
|
|
db_transaction.execute("insert into lbry_file_options values (?, ?, ?)", row)
|
|
return db_transaction.lastrowid
|
|
return self.db_conn.runInteraction(do_save)
|
|
|
|
@rerun_if_locked
|
|
def _delete_lbry_file_options(self, rowid):
|
|
return self.db_conn.runQuery("delete from lbry_file_options where rowid = ?",
|
|
(rowid,))
|
|
|
|
@rerun_if_locked
|
|
def _set_lbry_file_payment_rate(self, rowid, new_rate):
|
|
return self.db_conn.runQuery(
|
|
"update lbry_file_options set blob_data_rate = ? where rowid = ?",
|
|
(new_rate, rowid))
|
|
|
|
@rerun_if_locked
|
|
def _get_all_lbry_files(self):
|
|
d = self.db_conn.runQuery("select rowid, stream_hash, "
|
|
"blob_data_rate from lbry_file_options")
|
|
return d
|
|
|
|
@rerun_if_locked
|
|
def _change_file_status(self, rowid, new_status):
|
|
d = self.db_conn.runQuery("update lbry_file_options set status = ? where rowid = ?",
|
|
(new_status, rowid))
|
|
d.addCallback(lambda _: new_status)
|
|
return d
|
|
|
|
@rerun_if_locked
|
|
def _get_lbry_file_status(self, rowid):
|
|
d = self.db_conn.runQuery("select status from lbry_file_options where rowid = ?",
|
|
(rowid,))
|
|
d.addCallback(lambda r: (r[0][0] if len(r) else None))
|
|
return d
|
|
|
|
@rerun_if_locked
|
|
def _get_count_for_stream_hash(self, stream_hash):
|
|
d = self.db_conn.runQuery("select count(*) from lbry_file_options where stream_hash = ?",
|
|
(stream_hash,))
|
|
d.addCallback(lambda r: (r[0][0] if r else 0))
|
|
return d
|
|
|
|
@rerun_if_locked
|
|
def _get_rowid_for_stream_hash(self, stream_hash):
|
|
d = self.db_conn.runQuery("select rowid from lbry_file_options where stream_hash = ?",
|
|
(stream_hash,))
|
|
d.addCallback(lambda r: (r[0][0] if len(r) else None))
|
|
return d
|