forked from LBRYCommunity/lbry-sdk
639 lines
26 KiB
Python
639 lines
26 KiB
Python
import logging
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import os
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import time
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import sqlite3
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import traceback
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from decimal import Decimal
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from twisted.internet import defer, task, reactor, threads
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from twisted.enterprise import adbapi
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from lbryschema.claim import ClaimDict
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from lbryschema.decode import smart_decode
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from lbrynet import conf
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from lbrynet.cryptstream.CryptBlob import CryptBlobInfo
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from lbryum.constants import COIN
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log = logging.getLogger(__name__)
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def _get_next_available_file_name(download_directory, file_name):
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base_name, ext = os.path.splitext(file_name or "_")
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if ext:
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ext = ".%s" % ext
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i = 0
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while os.path.isfile(os.path.join(download_directory, file_name)):
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i += 1
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file_name = "%s_%i%s" % (base_name, i, ext)
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return os.path.join(download_directory, file_name)
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def _open_file_for_writing(download_directory, suggested_file_name):
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file_path = _get_next_available_file_name(download_directory, suggested_file_name)
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try:
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file_handle = open(file_path, 'wb')
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file_handle.close()
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except IOError:
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log.error(traceback.format_exc())
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raise ValueError(
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"Failed to open %s. Make sure you have permission to save files to that location." % file_path
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)
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return os.path.basename(file_path)
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def open_file_for_writing(download_directory, suggested_file_name):
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"""
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Used to touch the path of a file to be downloaded
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:param download_directory: (str)
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:param suggested_file_name: (str)
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:return: (str) basename
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"""
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return threads.deferToThread(_open_file_for_writing, download_directory, suggested_file_name)
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def get_next_announce_time(hash_announcer, num_hashes_to_announce=1, min_reannounce_time=60*60,
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single_announce_duration=5):
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"""
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Hash reannounce time is set to current time + MIN_HASH_REANNOUNCE_TIME,
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unless we are announcing a lot of hashes at once which could cause the
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the announce queue to pile up. To prevent pile up, reannounce
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only after a conservative estimate of when it will finish
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to announce all the hashes.
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Args:
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num_hashes_to_announce: number of hashes that will be added to the queue
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Returns:
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timestamp for next announce time
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"""
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queue_size = hash_announcer.hash_queue_size() + num_hashes_to_announce
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reannounce = max(min_reannounce_time,
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queue_size * single_announce_duration)
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return time.time() + reannounce
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def rerun_if_locked(f):
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max_attempts = 3
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def rerun(err, rerun_count, *args, **kwargs):
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log.debug("Failed to execute (%s): %s", err, args)
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if err.check(sqlite3.OperationalError) and err.value.message == "database is locked":
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log.warning("database was locked. rerunning %s with args %s, kwargs %s",
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str(f), str(args), str(kwargs))
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if rerun_count < max_attempts:
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return task.deferLater(reactor, 0, inner_wrapper, rerun_count + 1, *args, **kwargs)
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raise err
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def inner_wrapper(rerun_count, *args, **kwargs):
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d = f(*args, **kwargs)
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d.addErrback(rerun, rerun_count, *args, **kwargs)
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return d
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def wrapper(*args, **kwargs):
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return inner_wrapper(0, *args, **kwargs)
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return wrapper
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class SqliteConnection(adbapi.ConnectionPool):
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def __init__(self, db_path):
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adbapi.ConnectionPool.__init__(self, 'sqlite3', db_path, check_same_thread=False)
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@rerun_if_locked
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def runInteraction(self, interaction, *args, **kw):
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return adbapi.ConnectionPool.runInteraction(self, interaction, *args, **kw)
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class SQLiteStorage(object):
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CREATE_TABLES_QUERY = """
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pragma foreign_keys=on;
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pragma journal_mode=WAL;
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create table if not exists blob (
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blob_hash char(96) primary key not null,
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blob_length integer not null,
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next_announce_time integer not null,
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should_announce integer not null default 0,
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status text not null
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);
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create table if not exists stream (
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stream_hash char(96) not null primary key,
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sd_hash char(96) not null references blob,
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stream_key text not null,
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stream_name text not null,
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suggested_filename text not null
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);
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create table if not exists stream_blob (
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stream_hash char(96) not null references stream,
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blob_hash char(96) references blob,
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position integer not null,
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iv char(32) not null,
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primary key (stream_hash, blob_hash)
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);
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create table if not exists claim (
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claim_outpoint text not null primary key,
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claim_id char(40) not null,
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claim_name text not null,
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amount integer not null,
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height integer not null,
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serialized_metadata blob not null,
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channel_claim_id text,
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address text not null,
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claim_sequence integer not null
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);
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create table if not exists file (
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stream_hash text primary key not null references stream,
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file_name text not null,
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download_directory text not null,
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blob_data_rate real not null,
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status text not null
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);
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create table if not exists content_claim (
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stream_hash text unique not null references file,
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claim_outpoint text not null references claim,
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primary key (stream_hash, claim_outpoint)
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);
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create table if not exists support (
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support_outpoint text not null primary key,
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claim_id text not null,
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amount integer not null,
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address text not null
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);
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"""
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def __init__(self, db_dir):
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self.db_dir = db_dir
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self._db_path = os.path.join(db_dir, "lbrynet.sqlite")
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log.info("connecting to database: %s", self._db_path)
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self.db = SqliteConnection(self._db_path)
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def setup(self):
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def _create_tables(transaction):
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transaction.executescript(self.CREATE_TABLES_QUERY)
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return self.db.runInteraction(_create_tables)
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@defer.inlineCallbacks
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def run_and_return_one_or_none(self, query, *args):
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result = yield self.db.runQuery(query, args)
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if result:
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defer.returnValue(result[0][0])
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else:
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defer.returnValue(None)
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@defer.inlineCallbacks
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def run_and_return_list(self, query, *args):
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result = yield self.db.runQuery(query, args)
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if result:
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defer.returnValue([i[0] for i in result])
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else:
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defer.returnValue([])
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def stop(self):
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self.db.close()
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return defer.succeed(True)
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# # # # # # # # # blob functions # # # # # # # # #
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@defer.inlineCallbacks
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def add_completed_blob(self, blob_hash, length, next_announce_time, should_announce):
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log.debug("Adding a completed blob. blob_hash=%s, length=%i", blob_hash, length)
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yield self.add_known_blob(blob_hash, length)
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yield self.set_blob_status(blob_hash, "finished")
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yield self.set_should_announce(blob_hash, next_announce_time, should_announce)
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yield self.db.runOperation(
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"update blob set blob_length=? where blob_hash=?", (length, blob_hash)
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)
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def set_should_announce(self, blob_hash, next_announce_time, should_announce):
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should_announce = 1 if should_announce else 0
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return self.db.runOperation(
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"update blob set next_announce_time=?, should_announce=? where blob_hash=?",
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(next_announce_time, should_announce, blob_hash)
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)
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def set_blob_status(self, blob_hash, status):
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return self.db.runOperation(
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"update blob set status=? where blob_hash=?", (status, blob_hash)
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)
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def get_blob_status(self, blob_hash):
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return self.run_and_return_one_or_none(
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"select status from blob where blob_hash=?", blob_hash
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)
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@defer.inlineCallbacks
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def add_known_blob(self, blob_hash, length):
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status = yield self.get_blob_status(blob_hash)
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if status is None:
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status = "pending"
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yield self.db.runOperation("insert into blob values (?, ?, ?, ?, ?)",
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(blob_hash, length, 0, 0, status))
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defer.returnValue(status)
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def should_announce(self, blob_hash):
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return self.run_and_return_one_or_none(
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"select should_announce from blob where blob_hash=?", blob_hash
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)
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def count_should_announce_blobs(self):
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return self.run_and_return_one_or_none(
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"select count(*) from blob where should_announce=1 and status=?", "finished"
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)
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def get_all_should_announce_blobs(self):
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return self.run_and_return_list(
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"select blob_hash from blob where should_announce=1 and status=?", "finished"
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)
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def get_blobs_to_announce(self, hash_announcer):
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def get_and_update(transaction):
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timestamp = time.time()
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if conf.settings['announce_head_blobs_only']:
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r = transaction.execute(
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"select blob_hash from blob "
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"where blob_hash is not null and should_announce=1 and next_announce_time<?",
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(timestamp,)
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)
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else:
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r = transaction.execute(
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"select blob_hash from blob where blob_hash is not null and next_announce_time<?", (timestamp,)
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)
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blobs = [b for b, in r.fetchall()]
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next_announce_time = get_next_announce_time(hash_announcer, len(blobs))
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transaction.execute(
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"update blob set next_announce_time=? where next_announce_time<?", (next_announce_time, timestamp)
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)
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log.debug("Got %s blobs to announce, next announce time is in %s seconds", len(blobs),
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next_announce_time-time.time())
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return blobs
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return self.db.runInteraction(get_and_update)
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def delete_blobs_from_db(self, blob_hashes):
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def delete_blobs(transaction):
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for blob_hash in blob_hashes:
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transaction.execute("delete from blob where blob_hash=?;", (blob_hash,))
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return self.db.runInteraction(delete_blobs)
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def get_all_blob_hashes(self):
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return self.run_and_return_list("select blob_hash from blob")
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# # # # # # # # # stream blob functions # # # # # # # # #
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def add_blobs_to_stream(self, stream_hash, blob_infos):
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def _add_stream_blobs(transaction):
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for blob_info in blob_infos:
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transaction.execute("insert into stream_blob values (?, ?, ?, ?)",
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(stream_hash, blob_info.get('blob_hash', None),
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blob_info['blob_num'], blob_info['iv']))
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return self.db.runInteraction(_add_stream_blobs)
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@defer.inlineCallbacks
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def add_known_blobs(self, blob_infos):
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for blob_info in blob_infos:
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if blob_info.get('blob_hash') and blob_info['length']:
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yield self.add_known_blob(blob_info['blob_hash'], blob_info['length'])
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# # # # # # # # # stream functions # # # # # # # # #
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def store_stream(self, stream_hash, sd_hash, stream_name, stream_key, suggested_file_name,
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stream_blob_infos):
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"""
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Add a stream to the stream table
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:param stream_hash: hash of the assembled stream
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:param sd_hash: hash of the sd blob
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:param stream_key: blob decryption key
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:param stream_name: the name of the file the stream was generated from
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:param suggested_file_name: (str) suggested file name for stream
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:param stream_blob_infos: (list) of blob info dictionaries
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:return: (defer.Deferred)
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"""
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def _store_stream(transaction):
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transaction.execute("insert into stream values (?, ?, ?, ?, ?);",
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(stream_hash, sd_hash, stream_key, stream_name,
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suggested_file_name))
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for blob_info in stream_blob_infos:
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transaction.execute("insert into stream_blob values (?, ?, ?, ?)",
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(stream_hash, blob_info.get('blob_hash', None),
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blob_info['blob_num'], blob_info['iv']))
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return self.db.runInteraction(_store_stream)
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@defer.inlineCallbacks
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def delete_stream(self, stream_hash):
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sd_hash = yield self.get_sd_blob_hash_for_stream(stream_hash)
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stream_blobs = yield self.get_blobs_for_stream(stream_hash)
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blob_hashes = [b.blob_hash for b in stream_blobs]
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def _delete_stream(transaction):
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transaction.execute("delete from content_claim where stream_hash=? ", (stream_hash,))
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transaction.execute("delete from file where stream_hash=? ", (stream_hash, ))
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transaction.execute("delete from stream_blob where stream_hash=?", (stream_hash, ))
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transaction.execute("delete from stream where stream_hash=? ", (stream_hash, ))
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transaction.execute("delete from blob where blob_hash=?", (sd_hash, ))
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for blob_hash in blob_hashes:
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transaction.execute("delete from blob where blob_hash=?;", (blob_hash, ))
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yield self.db.runInteraction(_delete_stream)
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def get_all_streams(self):
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return self.run_and_return_list("select stream_hash from stream")
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def get_stream_info(self, stream_hash):
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d = self.db.runQuery("select stream_name, stream_key, suggested_filename, sd_hash from stream "
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"where stream_hash=?", (stream_hash, ))
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d.addCallback(lambda r: None if not r else r[0])
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return d
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def check_if_stream_exists(self, stream_hash):
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d = self.db.runQuery("select stream_hash from stream where stream_hash=?", (stream_hash, ))
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d.addCallback(lambda r: True if len(r) else False)
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return d
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def get_blob_num_by_hash(self, stream_hash, blob_hash):
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return self.run_and_return_one_or_none(
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"select position from stream_blob where stream_hash=? and blob_hash=?",
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stream_hash, blob_hash
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)
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def get_stream_blob_by_position(self, stream_hash, blob_num):
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return self.run_and_return_one_or_none(
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"select blob_hash from stream_blob where stream_hash=? and position=?",
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stream_hash, blob_num
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)
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def get_blobs_for_stream(self, stream_hash):
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def _get_blobs_for_stream(transaction):
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crypt_blob_infos = []
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stream_blobs = transaction.execute("select blob_hash, position, iv from stream_blob "
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"where stream_hash=?", (stream_hash, )).fetchall()
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if stream_blobs:
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for blob_hash, position, iv in stream_blobs:
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if blob_hash is not None:
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blob_length = transaction.execute("select blob_length from blob "
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"where blob_hash=?",
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(blob_hash,)).fetchone()
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blob_length = 0 if not blob_length else blob_length[0]
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crypt_blob_infos.append(CryptBlobInfo(blob_hash, position, blob_length, iv))
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else:
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crypt_blob_infos.append(CryptBlobInfo(None, position, 0, iv))
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crypt_blob_infos = sorted(crypt_blob_infos, key=lambda info: info.blob_num)
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return crypt_blob_infos
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return self.db.runInteraction(_get_blobs_for_stream)
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def get_stream_of_blob(self, blob_hash):
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return self.run_and_return_one_or_none(
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"select stream_hash from stream_blob where blob_hash=?", blob_hash
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)
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def get_sd_blob_hash_for_stream(self, stream_hash):
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return self.run_and_return_one_or_none(
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"select sd_hash from stream where stream_hash=?", stream_hash
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)
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def get_stream_hash_for_sd_hash(self, sd_blob_hash):
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return self.run_and_return_one_or_none(
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"select stream_hash from stream where sd_hash = ?", sd_blob_hash
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)
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# # # # # # # # # file stuff # # # # # # # # #
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@defer.inlineCallbacks
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def save_downloaded_file(self, stream_hash, file_name, download_directory, data_payment_rate):
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# touch the closest available file to the file name
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file_name = yield open_file_for_writing(download_directory.decode('hex'), file_name.decode('hex'))
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result = yield self.save_published_file(
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stream_hash, file_name.encode('hex'), download_directory, data_payment_rate
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)
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defer.returnValue(result)
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def save_published_file(self, stream_hash, file_name, download_directory, data_payment_rate, status="stopped"):
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def do_save(db_transaction):
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db_transaction.execute(
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"insert into file values (?, ?, ?, ?, ?)",
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(stream_hash, file_name, download_directory, data_payment_rate, status)
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)
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file_rowid = db_transaction.lastrowid
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return file_rowid
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return self.db.runInteraction(do_save)
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def get_filename_for_rowid(self, rowid):
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return self.run_and_return_one_or_none("select file_name from file where rowid=?", rowid)
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def get_all_lbry_files(self):
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def _lbry_file_dict(rowid, stream_hash, file_name, download_dir, data_rate, status, _, sd_hash, stream_key,
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stream_name, suggested_file_name):
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return {
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"row_id": rowid,
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"stream_hash": stream_hash,
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"file_name": file_name,
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"download_directory": download_dir,
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"blob_data_rate": data_rate,
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"status": status,
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"sd_hash": sd_hash,
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"key": stream_key,
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"stream_name": stream_name,
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"suggested_file_name": suggested_file_name
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}
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def _get_all_files(transaction):
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return [
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_lbry_file_dict(*file_info) for file_info in transaction.execute(
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"select file.rowid, file.*, stream.* "
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"from file inner join stream on file.stream_hash=stream.stream_hash"
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).fetchall()
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]
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d = self.db.runInteraction(_get_all_files)
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return d
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def change_file_status(self, rowid, new_status):
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d = self.db.runQuery("update file set status=? where rowid=?", (new_status, rowid))
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d.addCallback(lambda _: new_status)
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return d
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def get_lbry_file_status(self, rowid):
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return self.run_and_return_one_or_none(
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"select status from file where rowid = ?", rowid
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)
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def get_rowid_for_stream_hash(self, stream_hash):
|
|
return self.run_and_return_one_or_none(
|
|
"select rowid from file where stream_hash=?", stream_hash
|
|
)
|
|
|
|
# # # # # # # # # support functions # # # # # # # # #
|
|
|
|
def save_supports(self, claim_id, supports):
|
|
# TODO: add 'address' to support items returned for a claim from lbrycrdd and lbryum-server
|
|
def _save_support(transaction):
|
|
transaction.execute("delete from support where claim_id=?", (claim_id, ))
|
|
for support in supports:
|
|
transaction.execute(
|
|
"insert into support values (?, ?, ?, ?)",
|
|
("%s:%i" % (support['txid'], support['nout']), claim_id, int(support['amount'] * COIN),
|
|
support.get('address', ""))
|
|
)
|
|
return self.db.runInteraction(_save_support)
|
|
|
|
def get_supports(self, claim_id):
|
|
def _format_support(outpoint, supported_id, amount, address):
|
|
return {
|
|
"txid": outpoint.split(":")[0],
|
|
"nout": int(outpoint.split(":")[1]),
|
|
"claim_id": supported_id,
|
|
"amount": float(Decimal(amount) / Decimal(COIN)),
|
|
"address": address,
|
|
}
|
|
|
|
def _get_supports(transaction):
|
|
return [
|
|
_format_support(*support_info)
|
|
for support_info in transaction.execute(
|
|
"select * from support where claim_id=?", (claim_id, )
|
|
).fetchall()
|
|
]
|
|
|
|
return self.db.runInteraction(_get_supports)
|
|
|
|
# # # # # # # # # claim functions # # # # # # # # #
|
|
|
|
@defer.inlineCallbacks
|
|
def save_claim(self, claim_info, claim_dict=None):
|
|
outpoint = "%s:%i" % (claim_info['txid'], claim_info['nout'])
|
|
claim_id = claim_info['claim_id']
|
|
name = claim_info['name']
|
|
amount = int(COIN * claim_info['amount'])
|
|
height = claim_info['height']
|
|
address = claim_info['address']
|
|
sequence = claim_info['claim_sequence']
|
|
claim_dict = claim_dict or smart_decode(claim_info['value'])
|
|
serialized = claim_dict.serialized.encode('hex')
|
|
|
|
def _save_claim(transaction):
|
|
transaction.execute(
|
|
"insert or replace into claim values (?, ?, ?, ?, ?, ?, ?, ?, ?)",
|
|
(outpoint, claim_id, name, amount, height, serialized, claim_dict.certificate_id, address, sequence)
|
|
)
|
|
yield self.db.runInteraction(_save_claim)
|
|
|
|
if 'supports' in claim_info: # if this response doesn't have support info don't overwrite the existing
|
|
# support info
|
|
yield self.save_supports(claim_id, claim_info['supports'])
|
|
|
|
def save_content_claim(self, stream_hash, claim_outpoint):
|
|
def _save_content_claim(transaction):
|
|
# get the claim id and serialized metadata
|
|
claim_info = transaction.execute(
|
|
"select claim_id, serialized_metadata from claim where claim_outpoint=?", (claim_outpoint, )
|
|
).fetchone()
|
|
if not claim_info:
|
|
raise Exception("claim not found")
|
|
new_claim_id, claim = claim_info[0], ClaimDict.deserialize(claim_info[1].decode('hex'))
|
|
|
|
# certificate claims should not be in the content_claim table
|
|
if not claim.is_stream:
|
|
raise Exception("claim does not contain a stream")
|
|
|
|
# get the known sd hash for this stream
|
|
known_sd_hash = transaction.execute(
|
|
"select sd_hash from stream where stream_hash=?", (stream_hash, )
|
|
).fetchone()
|
|
if not known_sd_hash:
|
|
raise Exception("stream not found")
|
|
# check the claim contains the same sd hash
|
|
if known_sd_hash[0] != claim.source_hash:
|
|
raise Exception("stream mismatch")
|
|
|
|
# if there is a current claim associated to the file, check that the new claim is an update to it
|
|
current_associated_content = transaction.execute(
|
|
"select claim_outpoint from content_claim where stream_hash=?", (stream_hash, )
|
|
).fetchone()
|
|
if current_associated_content:
|
|
current_associated_claim_id = transaction.execute(
|
|
"select claim_id from claim where claim_outpoint=?", current_associated_content
|
|
).fetchone()[0]
|
|
if current_associated_claim_id != new_claim_id:
|
|
raise Exception("invalid stream update")
|
|
|
|
# update the claim associated to the file
|
|
transaction.execute("insert or replace into content_claim values (?, ?)", (stream_hash, claim_outpoint))
|
|
return self.db.runInteraction(_save_content_claim)
|
|
|
|
@defer.inlineCallbacks
|
|
def get_content_claim(self, stream_hash, include_supports=True):
|
|
def _get_content_claim(transaction):
|
|
claim_id = transaction.execute(
|
|
"select claim.claim_id from content_claim "
|
|
"inner join claim on claim.claim_outpoint=content_claim.claim_outpoint and content_claim.stream_hash=? "
|
|
"order by claim.rowid desc", (stream_hash, )
|
|
).fetchone()
|
|
if not claim_id:
|
|
return None
|
|
return claim_id[0]
|
|
|
|
content_claim_id = yield self.db.runInteraction(_get_content_claim)
|
|
result = None
|
|
if content_claim_id:
|
|
result = yield self.get_claim(content_claim_id, include_supports)
|
|
defer.returnValue(result)
|
|
|
|
@defer.inlineCallbacks
|
|
def get_claim(self, claim_id, include_supports=True):
|
|
def _claim_response(outpoint, claim_id, name, amount, height, serialized, channel_id, address, claim_sequence):
|
|
r = {
|
|
"name": name,
|
|
"claim_id": claim_id,
|
|
"address": address,
|
|
"claim_sequence": claim_sequence,
|
|
"value": ClaimDict.deserialize(serialized.decode('hex')).claim_dict,
|
|
"height": height,
|
|
"amount": float(Decimal(amount) / Decimal(COIN)),
|
|
"nout": int(outpoint.split(":")[1]),
|
|
"txid": outpoint.split(":")[0],
|
|
"channel_claim_id": channel_id,
|
|
"channel_name": None
|
|
}
|
|
return r
|
|
|
|
def _get_claim(transaction):
|
|
claim_info = transaction.execute(
|
|
"select * from claim where claim_id=? order by height, rowid desc", (claim_id, )
|
|
).fetchone()
|
|
result = _claim_response(*claim_info)
|
|
if result['channel_claim_id']:
|
|
channel_name_result = transaction.execute(
|
|
"select claim_name from claim where claim_id=?", (result['channel_claim_id'], )
|
|
).fetchone()
|
|
if channel_name_result:
|
|
result['channel_name'] = channel_name_result[0]
|
|
return result
|
|
|
|
result = yield self.db.runInteraction(_get_claim)
|
|
if include_supports:
|
|
supports = yield self.get_supports(result['claim_id'])
|
|
result['supports'] = supports
|
|
result['effective_amount'] = float(
|
|
sum([support['amount'] for support in supports]) + result['amount']
|
|
)
|
|
defer.returnValue(result)
|
|
|
|
def get_unknown_certificate_ids(self):
|
|
def _get_unknown_certificate_claim_ids(transaction):
|
|
return [
|
|
claim_id for (claim_id,) in transaction.execute(
|
|
"select distinct c1.channel_claim_id from claim as c1 "
|
|
"where c1.channel_claim_id!='' "
|
|
"and c1.channel_claim_id not in "
|
|
"(select c2.claim_id from claim as c2)"
|
|
).fetchall()
|
|
]
|
|
return self.db.runInteraction(_get_unknown_certificate_claim_ids)
|