forked from LBRYCommunity/lbry-sdk
987 lines
43 KiB
Python
987 lines
43 KiB
Python
import os
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from asyncio import Queue
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import apsw
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from typing import Union, Tuple, Set, List
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from itertools import chain
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from decimal import Decimal
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from collections import namedtuple
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from multiprocessing import Manager
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from binascii import unhexlify, hexlify
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from lbry.wallet.server.leveldb import LevelDB
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from lbry.wallet.server.util import class_logger
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from lbry.wallet.database import query, constraints_to_sql
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from lbry.schema.tags import clean_tags
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from lbry.schema.mime_types import guess_stream_type
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from lbry.wallet import Ledger, RegTestLedger
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from lbry.wallet.transaction import Transaction, Output
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from lbry.wallet.server.db.canonical import register_canonical_functions
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from lbry.wallet.server.db.trending import TRENDING_ALGORITHMS
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from .common import CLAIM_TYPES, STREAM_TYPES, COMMON_TAGS, INDEXED_LANGUAGES
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from .elastic_search import SearchIndex
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ATTRIBUTE_ARRAY_MAX_LENGTH = 100
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class SQLDB:
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PRAGMAS = """
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pragma journal_mode=WAL;
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"""
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CREATE_CLAIM_TABLE = """
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create table if not exists claim (
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claim_hash bytes primary key,
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claim_id text not null,
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claim_name text not null,
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normalized text not null,
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txo_hash bytes not null,
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tx_position integer not null,
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amount integer not null,
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timestamp integer not null, -- last updated timestamp
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creation_timestamp integer not null,
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height integer not null, -- last updated height
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creation_height integer not null,
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activation_height integer,
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expiration_height integer not null,
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release_time integer not null,
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short_url text not null, -- normalized#shortest-unique-claim_id
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canonical_url text, -- channel's-short_url/normalized#shortest-unique-claim_id-within-channel
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title text,
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author text,
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description text,
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claim_type integer,
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has_source bool,
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reposted integer default 0,
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-- streams
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stream_type text,
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media_type text,
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fee_amount integer default 0,
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fee_currency text,
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duration integer,
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-- reposts
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reposted_claim_hash bytes,
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-- claims which are channels
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public_key_bytes bytes,
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public_key_hash bytes,
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claims_in_channel integer,
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-- claims which are inside channels
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channel_hash bytes,
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channel_join integer, -- height at which claim got valid signature / joined channel
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signature bytes,
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signature_digest bytes,
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signature_valid bool,
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effective_amount integer not null default 0,
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support_amount integer not null default 0,
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trending_group integer not null default 0,
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trending_mixed integer not null default 0,
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trending_local integer not null default 0,
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trending_global integer not null default 0
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);
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create index if not exists claim_normalized_idx on claim (normalized, activation_height);
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create index if not exists claim_channel_hash_idx on claim (channel_hash, signature, claim_hash);
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create index if not exists claim_claims_in_channel_idx on claim (signature_valid, channel_hash, normalized);
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create index if not exists claim_txo_hash_idx on claim (txo_hash);
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create index if not exists claim_activation_height_idx on claim (activation_height, claim_hash);
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create index if not exists claim_expiration_height_idx on claim (expiration_height);
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create index if not exists claim_reposted_claim_hash_idx on claim (reposted_claim_hash);
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"""
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CREATE_SUPPORT_TABLE = """
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create table if not exists support (
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txo_hash bytes primary key,
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tx_position integer not null,
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height integer not null,
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claim_hash bytes not null,
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amount integer not null
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);
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create index if not exists support_claim_hash_idx on support (claim_hash, height);
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"""
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CREATE_TAG_TABLE = """
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create table if not exists tag (
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tag text not null,
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claim_hash bytes not null,
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height integer not null
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);
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create unique index if not exists tag_claim_hash_tag_idx on tag (claim_hash, tag);
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"""
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CREATE_LANGUAGE_TABLE = """
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create table if not exists language (
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language text not null,
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claim_hash bytes not null,
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height integer not null
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);
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create unique index if not exists language_claim_hash_language_idx on language (claim_hash, language);
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"""
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CREATE_CLAIMTRIE_TABLE = """
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create table if not exists claimtrie (
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normalized text primary key,
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claim_hash bytes not null,
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last_take_over_height integer not null
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);
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create index if not exists claimtrie_claim_hash_idx on claimtrie (claim_hash);
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"""
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CREATE_CHANGELOG_TRIGGER = """
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create table if not exists changelog (
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claim_hash bytes primary key
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);
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create index if not exists claimtrie_claim_hash_idx on claimtrie (claim_hash);
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create trigger if not exists claim_changelog after update on claim
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begin
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insert or ignore into changelog (claim_hash) values (new.claim_hash);
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end;
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create trigger if not exists claimtrie_changelog after update on claimtrie
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begin
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insert or ignore into changelog (claim_hash) values (new.claim_hash);
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insert or ignore into changelog (claim_hash) values (old.claim_hash);
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end;
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"""
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SEARCH_INDEXES = """
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-- used by any tag clouds
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create index if not exists tag_tag_idx on tag (tag, claim_hash);
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-- naked order bys (no filters)
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create unique index if not exists claim_release_idx on claim (release_time, claim_hash);
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create unique index if not exists claim_trending_idx on claim (trending_group, trending_mixed, claim_hash);
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create unique index if not exists claim_effective_amount_idx on claim (effective_amount, claim_hash);
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-- claim_type filter + order by
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create unique index if not exists claim_type_release_idx on claim (release_time, claim_type, claim_hash);
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create unique index if not exists claim_type_trending_idx on claim (trending_group, trending_mixed, claim_type, claim_hash);
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create unique index if not exists claim_type_effective_amount_idx on claim (effective_amount, claim_type, claim_hash);
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-- stream_type filter + order by
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create unique index if not exists stream_type_release_idx on claim (stream_type, release_time, claim_hash);
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create unique index if not exists stream_type_trending_idx on claim (stream_type, trending_group, trending_mixed, claim_hash);
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create unique index if not exists stream_type_effective_amount_idx on claim (stream_type, effective_amount, claim_hash);
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-- channel_hash filter + order by
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create unique index if not exists channel_hash_release_idx on claim (channel_hash, release_time, claim_hash);
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create unique index if not exists channel_hash_trending_idx on claim (channel_hash, trending_group, trending_mixed, claim_hash);
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create unique index if not exists channel_hash_effective_amount_idx on claim (channel_hash, effective_amount, claim_hash);
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-- duration filter + order by
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create unique index if not exists duration_release_idx on claim (duration, release_time, claim_hash);
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create unique index if not exists duration_trending_idx on claim (duration, trending_group, trending_mixed, claim_hash);
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create unique index if not exists duration_effective_amount_idx on claim (duration, effective_amount, claim_hash);
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-- fee_amount + order by
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create unique index if not exists fee_amount_release_idx on claim (fee_amount, release_time, claim_hash);
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create unique index if not exists fee_amount_trending_idx on claim (fee_amount, trending_group, trending_mixed, claim_hash);
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create unique index if not exists fee_amount_effective_amount_idx on claim (fee_amount, effective_amount, claim_hash);
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-- TODO: verify that all indexes below are used
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create index if not exists claim_height_normalized_idx on claim (height, normalized asc);
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create index if not exists claim_resolve_idx on claim (normalized, claim_id);
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create index if not exists claim_id_idx on claim (claim_id, claim_hash);
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create index if not exists claim_timestamp_idx on claim (timestamp);
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create index if not exists claim_public_key_hash_idx on claim (public_key_hash);
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create index if not exists claim_signature_valid_idx on claim (signature_valid);
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"""
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TAG_INDEXES = '\n'.join(
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f"create unique index if not exists tag_{tag_key}_idx on tag (tag, claim_hash) WHERE tag='{tag_value}';"
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for tag_value, tag_key in COMMON_TAGS.items()
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)
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LANGUAGE_INDEXES = '\n'.join(
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f"create unique index if not exists language_{language}_idx on language (language, claim_hash) WHERE language='{language}';"
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for language in INDEXED_LANGUAGES
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)
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CREATE_TABLES_QUERY = (
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CREATE_CLAIM_TABLE +
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CREATE_SUPPORT_TABLE +
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CREATE_CLAIMTRIE_TABLE +
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CREATE_TAG_TABLE +
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CREATE_CHANGELOG_TRIGGER +
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CREATE_LANGUAGE_TABLE
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)
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def __init__(
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self, main, path: str, blocking_channels: list, filtering_channels: list, trending: list):
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self.main = main
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self._db_path = path
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self.db = None
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self.logger = class_logger(__name__, self.__class__.__name__)
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self.ledger = Ledger if main.coin.NET == 'mainnet' else RegTestLedger
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self.state_manager = None
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self.blocked_streams = None
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self.blocked_channels = None
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self.blocking_channel_hashes = {
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unhexlify(channel_id)[::-1] for channel_id in blocking_channels if channel_id
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}
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self.filtered_streams = None
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self.filtered_channels = None
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self.filtering_channel_hashes = {
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unhexlify(channel_id)[::-1] for channel_id in filtering_channels if channel_id
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}
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self.trending = trending
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self.pending_deletes = set()
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def open(self):
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self.db = apsw.Connection(
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self._db_path,
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flags=(
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apsw.SQLITE_OPEN_READWRITE |
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apsw.SQLITE_OPEN_CREATE |
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apsw.SQLITE_OPEN_URI
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)
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)
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def exec_factory(cursor, statement, bindings):
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tpl = namedtuple('row', (d[0] for d in cursor.getdescription()))
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cursor.setrowtrace(lambda cursor, row: tpl(*row))
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return True
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self.db.setexectrace(exec_factory)
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self.execute(self.PRAGMAS)
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self.execute(self.CREATE_TABLES_QUERY)
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register_canonical_functions(self.db)
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self.state_manager = Manager()
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self.blocked_streams = self.state_manager.dict()
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self.blocked_channels = self.state_manager.dict()
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self.filtered_streams = self.state_manager.dict()
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self.filtered_channels = self.state_manager.dict()
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self.update_blocked_and_filtered_claims()
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for algorithm in self.trending:
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algorithm.install(self.db)
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def close(self):
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if self.db is not None:
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self.db.close()
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if self.state_manager is not None:
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self.state_manager.shutdown()
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def update_blocked_and_filtered_claims(self):
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self.update_claims_from_channel_hashes(
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self.blocked_streams, self.blocked_channels, self.blocking_channel_hashes
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)
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self.update_claims_from_channel_hashes(
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self.filtered_streams, self.filtered_channels, self.filtering_channel_hashes
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)
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self.filtered_streams.update(self.blocked_streams)
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self.filtered_channels.update(self.blocked_channels)
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def update_claims_from_channel_hashes(self, shared_streams, shared_channels, channel_hashes):
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streams, channels = {}, {}
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if channel_hashes:
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sql = query(
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"SELECT repost.channel_hash, repost.reposted_claim_hash, target.claim_type "
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"FROM claim as repost JOIN claim AS target ON (target.claim_hash=repost.reposted_claim_hash)", **{
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'repost.reposted_claim_hash__is_not_null': 1,
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'repost.channel_hash__in': channel_hashes
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}
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)
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for blocked_claim in self.execute(*sql):
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if blocked_claim.claim_type == CLAIM_TYPES['stream']:
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streams[blocked_claim.reposted_claim_hash] = blocked_claim.channel_hash
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elif blocked_claim.claim_type == CLAIM_TYPES['channel']:
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channels[blocked_claim.reposted_claim_hash] = blocked_claim.channel_hash
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shared_streams.clear()
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shared_streams.update(streams)
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shared_channels.clear()
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shared_channels.update(channels)
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@staticmethod
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def _insert_sql(table: str, data: dict) -> Tuple[str, list]:
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columns, values = [], []
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for column, value in data.items():
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columns.append(column)
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values.append(value)
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sql = (
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f"INSERT INTO {table} ({', '.join(columns)}) "
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f"VALUES ({', '.join(['?'] * len(values))})"
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)
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return sql, values
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@staticmethod
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def _update_sql(table: str, data: dict, where: str,
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constraints: Union[list, tuple]) -> Tuple[str, list]:
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columns, values = [], []
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for column, value in data.items():
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columns.append(f"{column} = ?")
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values.append(value)
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values.extend(constraints)
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return f"UPDATE {table} SET {', '.join(columns)} WHERE {where}", values
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@staticmethod
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def _delete_sql(table: str, constraints: dict) -> Tuple[str, dict]:
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where, values = constraints_to_sql(constraints)
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return f"DELETE FROM {table} WHERE {where}", values
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def execute(self, *args):
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return self.db.cursor().execute(*args)
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def executemany(self, *args):
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return self.db.cursor().executemany(*args)
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def begin(self):
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self.execute('begin;')
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def commit(self):
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self.execute('commit;')
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def _upsertable_claims(self, txos: List[Output], header, clear_first=False):
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claim_hashes, claims, tags, languages = set(), [], {}, {}
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for txo in txos:
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tx = txo.tx_ref.tx
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try:
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assert txo.claim_name
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assert txo.normalized_name
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except:
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#self.logger.exception(f"Could not decode claim name for {tx.id}:{txo.position}.")
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continue
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language = 'none'
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try:
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if txo.claim.is_stream and txo.claim.stream.languages:
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language = txo.claim.stream.languages[0].language
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except:
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pass
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claim_hash = txo.claim_hash
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claim_hashes.add(claim_hash)
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claim_record = {
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'claim_hash': claim_hash,
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'claim_id': txo.claim_id,
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'claim_name': txo.claim_name,
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'normalized': txo.normalized_name,
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'txo_hash': txo.ref.hash,
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'tx_position': tx.position,
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'amount': txo.amount,
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'timestamp': header['timestamp'],
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'height': tx.height,
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'title': None,
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'description': None,
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'author': None,
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'duration': None,
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'claim_type': None,
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'has_source': False,
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'stream_type': None,
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'media_type': None,
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'release_time': None,
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'fee_currency': None,
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'fee_amount': 0,
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'reposted_claim_hash': None
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}
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claims.append(claim_record)
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try:
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claim = txo.claim
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except:
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#self.logger.exception(f"Could not parse claim protobuf for {tx.id}:{txo.position}.")
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continue
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if claim.is_stream:
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claim_record['claim_type'] = CLAIM_TYPES['stream']
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claim_record['has_source'] = claim.stream.has_source
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claim_record['media_type'] = claim.stream.source.media_type
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claim_record['stream_type'] = STREAM_TYPES[guess_stream_type(claim_record['media_type'])]
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claim_record['title'] = claim.stream.title
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claim_record['description'] = claim.stream.description
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claim_record['author'] = claim.stream.author
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if claim.stream.video and claim.stream.video.duration:
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claim_record['duration'] = claim.stream.video.duration
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if claim.stream.audio and claim.stream.audio.duration:
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claim_record['duration'] = claim.stream.audio.duration
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if claim.stream.release_time:
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claim_record['release_time'] = claim.stream.release_time
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if claim.stream.has_fee:
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fee = claim.stream.fee
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if isinstance(fee.currency, str):
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claim_record['fee_currency'] = fee.currency.lower()
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if isinstance(fee.amount, Decimal):
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claim_record['fee_amount'] = int(fee.amount*1000)
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elif claim.is_repost:
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claim_record['claim_type'] = CLAIM_TYPES['repost']
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claim_record['reposted_claim_hash'] = claim.repost.reference.claim_hash
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elif claim.is_channel:
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claim_record['claim_type'] = CLAIM_TYPES['channel']
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elif claim.is_collection:
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claim_record['claim_type'] = CLAIM_TYPES['collection']
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languages[(language, claim_hash)] = (language, claim_hash, tx.height)
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for tag in clean_tags(claim.message.tags):
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tags[(tag, claim_hash)] = (tag, claim_hash, tx.height)
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if clear_first:
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self._clear_claim_metadata(claim_hashes)
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if tags:
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self.executemany(
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"INSERT OR IGNORE INTO tag (tag, claim_hash, height) VALUES (?, ?, ?)", tags.values()
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)
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if languages:
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self.executemany(
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"INSERT OR IGNORE INTO language (language, claim_hash, height) VALUES (?, ?, ?)", languages.values()
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)
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return claims
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def insert_claims(self, txos: List[Output], header):
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claims = self._upsertable_claims(txos, header)
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if claims:
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self.executemany("""
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INSERT OR REPLACE INTO claim (
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claim_hash, claim_id, claim_name, normalized, txo_hash, tx_position, amount,
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claim_type, media_type, stream_type, timestamp, creation_timestamp, has_source,
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fee_currency, fee_amount, title, description, author, duration, height, reposted_claim_hash,
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creation_height, release_time, activation_height, expiration_height, short_url)
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VALUES (
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:claim_hash, :claim_id, :claim_name, :normalized, :txo_hash, :tx_position, :amount,
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:claim_type, :media_type, :stream_type, :timestamp, :timestamp, :has_source,
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:fee_currency, :fee_amount, :title, :description, :author, :duration, :height, :reposted_claim_hash, :height,
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CASE WHEN :release_time IS NOT NULL THEN :release_time ELSE :timestamp END,
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CASE WHEN :normalized NOT IN (SELECT normalized FROM claimtrie) THEN :height END,
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CASE WHEN :height >= 137181 THEN :height+2102400 ELSE :height+262974 END,
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:claim_name||COALESCE(
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(SELECT shortest_id(claim_id, :claim_id) FROM claim WHERE normalized = :normalized),
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'#'||substr(:claim_id, 1, 1)
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)
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)""", claims)
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def update_claims(self, txos: List[Output], header):
|
|
claims = self._upsertable_claims(txos, header, clear_first=True)
|
|
if claims:
|
|
self.executemany("""
|
|
UPDATE claim SET
|
|
txo_hash=:txo_hash, tx_position=:tx_position, amount=:amount, height=:height,
|
|
claim_type=:claim_type, media_type=:media_type, stream_type=:stream_type,
|
|
timestamp=:timestamp, fee_amount=:fee_amount, fee_currency=:fee_currency, has_source=:has_source,
|
|
title=:title, duration=:duration, description=:description, author=:author, reposted_claim_hash=:reposted_claim_hash,
|
|
release_time=CASE WHEN :release_time IS NOT NULL THEN :release_time ELSE release_time END
|
|
WHERE claim_hash=:claim_hash;
|
|
""", claims)
|
|
|
|
def delete_claims(self, claim_hashes: Set[bytes]):
|
|
""" Deletes claim supports and from claimtrie in case of an abandon. """
|
|
if claim_hashes:
|
|
affected_channels = self.execute(*query(
|
|
"SELECT channel_hash FROM claim", channel_hash__is_not_null=1, claim_hash__in=claim_hashes
|
|
)).fetchall()
|
|
for table in ('claim', 'support', 'claimtrie'):
|
|
self.execute(*self._delete_sql(table, {'claim_hash__in': claim_hashes}))
|
|
self._clear_claim_metadata(claim_hashes)
|
|
return {r.channel_hash for r in affected_channels}
|
|
return set()
|
|
|
|
def delete_claims_above_height(self, height: int):
|
|
claim_hashes = [x[0] for x in self.execute(
|
|
"SELECT claim_hash FROM claim WHERE height>?", (height, )
|
|
).fetchall()]
|
|
while claim_hashes:
|
|
batch = set(claim_hashes[:500])
|
|
claim_hashes = claim_hashes[500:]
|
|
self.delete_claims(batch)
|
|
|
|
def _clear_claim_metadata(self, claim_hashes: Set[bytes]):
|
|
if claim_hashes:
|
|
for table in ('tag',): # 'language', 'location', etc
|
|
self.execute(*self._delete_sql(table, {'claim_hash__in': claim_hashes}))
|
|
|
|
def split_inputs_into_claims_supports_and_other(self, txis):
|
|
txo_hashes = {txi.txo_ref.hash for txi in txis}
|
|
claims = self.execute(*query(
|
|
"SELECT txo_hash, claim_hash, normalized FROM claim", txo_hash__in=txo_hashes
|
|
)).fetchall()
|
|
txo_hashes -= {r.txo_hash for r in claims}
|
|
supports = {}
|
|
if txo_hashes:
|
|
supports = self.execute(*query(
|
|
"SELECT txo_hash, claim_hash FROM support", txo_hash__in=txo_hashes
|
|
)).fetchall()
|
|
txo_hashes -= {r.txo_hash for r in supports}
|
|
return claims, supports, txo_hashes
|
|
|
|
def insert_supports(self, txos: List[Output]):
|
|
supports = []
|
|
for txo in txos:
|
|
tx = txo.tx_ref.tx
|
|
supports.append((
|
|
txo.ref.hash, tx.position, tx.height,
|
|
txo.claim_hash, txo.amount
|
|
))
|
|
if supports:
|
|
self.executemany(
|
|
"INSERT OR IGNORE INTO support ("
|
|
" txo_hash, tx_position, height, claim_hash, amount"
|
|
") "
|
|
"VALUES (?, ?, ?, ?, ?)", supports
|
|
)
|
|
|
|
def delete_supports(self, txo_hashes: Set[bytes]):
|
|
if txo_hashes:
|
|
self.execute(*self._delete_sql('support', {'txo_hash__in': txo_hashes}))
|
|
|
|
def calculate_reposts(self, txos: List[Output]):
|
|
targets = set()
|
|
for txo in txos:
|
|
try:
|
|
claim = txo.claim
|
|
except:
|
|
continue
|
|
if claim.is_repost:
|
|
targets.add((claim.repost.reference.claim_hash,))
|
|
if targets:
|
|
self.executemany(
|
|
"""
|
|
UPDATE claim SET reposted = (
|
|
SELECT count(*) FROM claim AS repost WHERE repost.reposted_claim_hash = claim.claim_hash
|
|
)
|
|
WHERE claim_hash = ?
|
|
""", targets
|
|
)
|
|
return set(target[0] for target in targets)
|
|
|
|
def validate_channel_signatures(self, height, new_claims, updated_claims, spent_claims, affected_channels, timer):
|
|
if not new_claims and not updated_claims and not spent_claims:
|
|
return
|
|
|
|
sub_timer = timer.add_timer('segregate channels and signables')
|
|
sub_timer.start()
|
|
channels, new_channel_keys, signables = {}, {}, {}
|
|
for txo in chain(new_claims, updated_claims):
|
|
try:
|
|
claim = txo.claim
|
|
except:
|
|
continue
|
|
if claim.is_channel:
|
|
channels[txo.claim_hash] = txo
|
|
new_channel_keys[txo.claim_hash] = claim.channel.public_key_bytes
|
|
else:
|
|
signables[txo.claim_hash] = txo
|
|
sub_timer.stop()
|
|
|
|
sub_timer = timer.add_timer('make list of channels we need to lookup')
|
|
sub_timer.start()
|
|
missing_channel_keys = set()
|
|
for txo in signables.values():
|
|
claim = txo.claim
|
|
if claim.is_signed and claim.signing_channel_hash not in new_channel_keys:
|
|
missing_channel_keys.add(claim.signing_channel_hash)
|
|
sub_timer.stop()
|
|
|
|
sub_timer = timer.add_timer('lookup missing channels')
|
|
sub_timer.start()
|
|
all_channel_keys = {}
|
|
if new_channel_keys or missing_channel_keys or affected_channels:
|
|
all_channel_keys = dict(self.execute(*query(
|
|
"SELECT claim_hash, public_key_bytes FROM claim",
|
|
claim_hash__in=set(new_channel_keys) | missing_channel_keys | affected_channels
|
|
)))
|
|
sub_timer.stop()
|
|
|
|
sub_timer = timer.add_timer('prepare for updating claims')
|
|
sub_timer.start()
|
|
changed_channel_keys = {}
|
|
for claim_hash, new_key in new_channel_keys.items():
|
|
if claim_hash not in all_channel_keys or all_channel_keys[claim_hash] != new_key:
|
|
all_channel_keys[claim_hash] = new_key
|
|
changed_channel_keys[claim_hash] = new_key
|
|
|
|
claim_updates = []
|
|
|
|
for claim_hash, txo in signables.items():
|
|
claim = txo.claim
|
|
update = {
|
|
'claim_hash': claim_hash,
|
|
'channel_hash': None,
|
|
'signature': None,
|
|
'signature_digest': None,
|
|
'signature_valid': None
|
|
}
|
|
if claim.is_signed:
|
|
update.update({
|
|
'channel_hash': claim.signing_channel_hash,
|
|
'signature': txo.get_encoded_signature(),
|
|
'signature_digest': txo.get_signature_digest(self.ledger),
|
|
'signature_valid': 0
|
|
})
|
|
claim_updates.append(update)
|
|
sub_timer.stop()
|
|
|
|
sub_timer = timer.add_timer('find claims affected by a change in channel key')
|
|
sub_timer.start()
|
|
if changed_channel_keys:
|
|
sql = f"""
|
|
SELECT * FROM claim WHERE
|
|
channel_hash IN ({','.join('?' for _ in changed_channel_keys)}) AND
|
|
signature IS NOT NULL
|
|
"""
|
|
for affected_claim in self.execute(sql, changed_channel_keys.keys()):
|
|
if affected_claim.claim_hash not in signables:
|
|
claim_updates.append({
|
|
'claim_hash': affected_claim.claim_hash,
|
|
'channel_hash': affected_claim.channel_hash,
|
|
'signature': affected_claim.signature,
|
|
'signature_digest': affected_claim.signature_digest,
|
|
'signature_valid': 0
|
|
})
|
|
sub_timer.stop()
|
|
|
|
sub_timer = timer.add_timer('verify signatures')
|
|
sub_timer.start()
|
|
for update in claim_updates:
|
|
channel_pub_key = all_channel_keys.get(update['channel_hash'])
|
|
if channel_pub_key and update['signature']:
|
|
update['signature_valid'] = Output.is_signature_valid(
|
|
bytes(update['signature']), bytes(update['signature_digest']), channel_pub_key
|
|
)
|
|
sub_timer.stop()
|
|
|
|
sub_timer = timer.add_timer('update claims')
|
|
sub_timer.start()
|
|
if claim_updates:
|
|
self.executemany(f"""
|
|
UPDATE claim SET
|
|
channel_hash=:channel_hash, signature=:signature, signature_digest=:signature_digest,
|
|
signature_valid=:signature_valid,
|
|
channel_join=CASE
|
|
WHEN signature_valid=1 AND :signature_valid=1 AND channel_hash=:channel_hash THEN channel_join
|
|
WHEN :signature_valid=1 THEN {height}
|
|
END,
|
|
canonical_url=CASE
|
|
WHEN signature_valid=1 AND :signature_valid=1 AND channel_hash=:channel_hash THEN canonical_url
|
|
WHEN :signature_valid=1 THEN
|
|
(SELECT short_url FROM claim WHERE claim_hash=:channel_hash)||'/'||
|
|
claim_name||COALESCE(
|
|
(SELECT shortest_id(other_claim.claim_id, claim.claim_id) FROM claim AS other_claim
|
|
WHERE other_claim.signature_valid = 1 AND
|
|
other_claim.channel_hash = :channel_hash AND
|
|
other_claim.normalized = claim.normalized),
|
|
'#'||substr(claim_id, 1, 1)
|
|
)
|
|
END
|
|
WHERE claim_hash=:claim_hash;
|
|
""", claim_updates)
|
|
sub_timer.stop()
|
|
|
|
sub_timer = timer.add_timer('update claims affected by spent channels')
|
|
sub_timer.start()
|
|
if spent_claims:
|
|
self.execute(
|
|
f"""
|
|
UPDATE claim SET
|
|
signature_valid=CASE WHEN signature IS NOT NULL THEN 0 END,
|
|
channel_join=NULL, canonical_url=NULL
|
|
WHERE channel_hash IN ({','.join('?' for _ in spent_claims)})
|
|
""", spent_claims
|
|
)
|
|
sub_timer.stop()
|
|
|
|
sub_timer = timer.add_timer('update channels')
|
|
sub_timer.start()
|
|
if channels:
|
|
self.executemany(
|
|
"""
|
|
UPDATE claim SET
|
|
public_key_bytes=:public_key_bytes,
|
|
public_key_hash=:public_key_hash
|
|
WHERE claim_hash=:claim_hash""", [{
|
|
'claim_hash': claim_hash,
|
|
'public_key_bytes': txo.claim.channel.public_key_bytes,
|
|
'public_key_hash': self.ledger.address_to_hash160(
|
|
self.ledger.public_key_to_address(txo.claim.channel.public_key_bytes)
|
|
)
|
|
} for claim_hash, txo in channels.items()]
|
|
)
|
|
sub_timer.stop()
|
|
|
|
sub_timer = timer.add_timer('update claims_in_channel counts')
|
|
sub_timer.start()
|
|
if all_channel_keys:
|
|
self.executemany(f"""
|
|
UPDATE claim SET
|
|
claims_in_channel=(
|
|
SELECT COUNT(*) FROM claim AS claim_in_channel
|
|
WHERE claim_in_channel.signature_valid=1 AND
|
|
claim_in_channel.channel_hash=claim.claim_hash
|
|
)
|
|
WHERE claim_hash = ?
|
|
""", [(channel_hash,) for channel_hash in all_channel_keys.keys()])
|
|
sub_timer.stop()
|
|
|
|
sub_timer = timer.add_timer('update blocked claims list')
|
|
sub_timer.start()
|
|
if (self.blocking_channel_hashes.intersection(all_channel_keys) or
|
|
self.filtering_channel_hashes.intersection(all_channel_keys)):
|
|
self.update_blocked_and_filtered_claims()
|
|
sub_timer.stop()
|
|
|
|
def _update_support_amount(self, claim_hashes):
|
|
if claim_hashes:
|
|
self.execute(f"""
|
|
UPDATE claim SET
|
|
support_amount = COALESCE(
|
|
(SELECT SUM(amount) FROM support WHERE support.claim_hash=claim.claim_hash), 0
|
|
)
|
|
WHERE claim_hash IN ({','.join('?' for _ in claim_hashes)})
|
|
""", claim_hashes)
|
|
|
|
def _update_effective_amount(self, height, claim_hashes=None):
|
|
self.execute(
|
|
f"UPDATE claim SET effective_amount = amount + support_amount "
|
|
f"WHERE activation_height = {height}"
|
|
)
|
|
if claim_hashes:
|
|
self.execute(
|
|
f"UPDATE claim SET effective_amount = amount + support_amount "
|
|
f"WHERE activation_height < {height} "
|
|
f" AND claim_hash IN ({','.join('?' for _ in claim_hashes)})",
|
|
claim_hashes
|
|
)
|
|
|
|
def _calculate_activation_height(self, height):
|
|
last_take_over_height = f"""COALESCE(
|
|
(SELECT last_take_over_height FROM claimtrie
|
|
WHERE claimtrie.normalized=claim.normalized),
|
|
{height}
|
|
)
|
|
"""
|
|
self.execute(f"""
|
|
UPDATE claim SET activation_height =
|
|
{height} + min(4032, cast(({height} - {last_take_over_height}) / 32 AS INT))
|
|
WHERE activation_height IS NULL
|
|
""")
|
|
|
|
def _perform_overtake(self, height, changed_claim_hashes, deleted_names):
|
|
deleted_names_sql = claim_hashes_sql = ""
|
|
if changed_claim_hashes:
|
|
claim_hashes_sql = f"OR claim_hash IN ({','.join('?' for _ in changed_claim_hashes)})"
|
|
if deleted_names:
|
|
deleted_names_sql = f"OR normalized IN ({','.join('?' for _ in deleted_names)})"
|
|
overtakes = self.execute(f"""
|
|
SELECT winner.normalized, winner.claim_hash,
|
|
claimtrie.claim_hash AS current_winner,
|
|
MAX(winner.effective_amount) AS max_winner_effective_amount
|
|
FROM (
|
|
SELECT normalized, claim_hash, effective_amount FROM claim
|
|
WHERE normalized IN (
|
|
SELECT normalized FROM claim WHERE activation_height={height} {claim_hashes_sql}
|
|
) {deleted_names_sql}
|
|
ORDER BY effective_amount DESC, height ASC, tx_position ASC
|
|
) AS winner LEFT JOIN claimtrie USING (normalized)
|
|
GROUP BY winner.normalized
|
|
HAVING current_winner IS NULL OR current_winner <> winner.claim_hash
|
|
""", list(changed_claim_hashes)+deleted_names)
|
|
for overtake in overtakes:
|
|
if overtake.current_winner:
|
|
self.execute(
|
|
f"UPDATE claimtrie SET claim_hash = ?, last_take_over_height = {height} "
|
|
f"WHERE normalized = ?",
|
|
(overtake.claim_hash, overtake.normalized)
|
|
)
|
|
else:
|
|
self.execute(
|
|
f"INSERT INTO claimtrie (claim_hash, normalized, last_take_over_height) "
|
|
f"VALUES (?, ?, {height})",
|
|
(overtake.claim_hash, overtake.normalized)
|
|
)
|
|
self.execute(
|
|
f"UPDATE claim SET activation_height = {height} WHERE normalized = ? "
|
|
f"AND (activation_height IS NULL OR activation_height > {height})",
|
|
(overtake.normalized,)
|
|
)
|
|
|
|
def _copy(self, height):
|
|
if height > 50:
|
|
self.execute(f"DROP TABLE claimtrie{height-50}")
|
|
self.execute(f"CREATE TABLE claimtrie{height} AS SELECT * FROM claimtrie")
|
|
|
|
def update_claimtrie(self, height, changed_claim_hashes, deleted_names, timer):
|
|
r = timer.run
|
|
|
|
r(self._calculate_activation_height, height)
|
|
r(self._update_support_amount, changed_claim_hashes)
|
|
|
|
r(self._update_effective_amount, height, changed_claim_hashes)
|
|
r(self._perform_overtake, height, changed_claim_hashes, list(deleted_names))
|
|
|
|
r(self._update_effective_amount, height)
|
|
r(self._perform_overtake, height, [], [])
|
|
|
|
def get_expiring(self, height):
|
|
return self.execute(
|
|
f"SELECT claim_hash, normalized FROM claim WHERE expiration_height = {height}"
|
|
)
|
|
|
|
def enqueue_changes(self):
|
|
for claim in self.execute(f"""
|
|
SELECT claimtrie.claim_hash as is_controlling,
|
|
claimtrie.last_take_over_height,
|
|
(select group_concat(tag, ',,') from tag where tag.claim_hash in (claim.claim_hash, claim.reposted_claim_hash)) as tags,
|
|
(select group_concat(language, ' ') from language where language.claim_hash in (claim.claim_hash, claim.reposted_claim_hash)) as languages,
|
|
claim.*
|
|
FROM claim LEFT JOIN claimtrie USING (claim_hash)
|
|
WHERE claim.claim_hash in (SELECT claim_hash FROM changelog)
|
|
"""):
|
|
claim = claim._asdict()
|
|
id_set = set(filter(None, (claim['claim_hash'], claim['channel_hash'], claim['reposted_claim_hash'])))
|
|
claim['censor_type'] = 0
|
|
claim['censoring_channel_hash'] = None
|
|
for reason_id in id_set:
|
|
if reason_id in self.blocked_streams:
|
|
claim['censor_type'] = 2
|
|
claim['censoring_channel_hash'] = self.blocked_streams.get(reason_id)
|
|
elif reason_id in self.blocked_channels:
|
|
claim['censor_type'] = 2
|
|
claim['censoring_channel_hash'] = self.blocked_channels.get(reason_id)
|
|
elif reason_id in self.filtered_streams:
|
|
claim['censor_type'] = 1
|
|
claim['censoring_channel_hash'] = self.filtered_streams.get(reason_id)
|
|
elif reason_id in self.filtered_channels:
|
|
claim['censor_type'] = 1
|
|
claim['censoring_channel_hash'] = self.filtered_channels.get(reason_id)
|
|
|
|
claim['tags'] = claim['tags'].split(',,') if claim['tags'] else []
|
|
claim['languages'] = claim['languages'].split(' ') if claim['languages'] else []
|
|
yield 'update', claim
|
|
|
|
def clear_changelog(self):
|
|
self.execute("delete from changelog;")
|
|
|
|
def claim_producer(self):
|
|
while self.pending_deletes:
|
|
claim_hash = self.pending_deletes.pop()
|
|
yield 'delete', hexlify(claim_hash[::-1]).decode()
|
|
for claim in self.enqueue_changes():
|
|
yield claim
|
|
self.clear_changelog()
|
|
|
|
def advance_txs(self, height, all_txs, header, daemon_height, timer):
|
|
insert_claims = []
|
|
update_claims = []
|
|
update_claim_hashes = set()
|
|
delete_claim_hashes = self.pending_deletes
|
|
insert_supports = []
|
|
delete_support_txo_hashes = set()
|
|
recalculate_claim_hashes = set() # added/deleted supports, added/updated claim
|
|
deleted_claim_names = set()
|
|
delete_others = set()
|
|
body_timer = timer.add_timer('body')
|
|
for position, (etx, txid) in enumerate(all_txs):
|
|
tx = timer.run(
|
|
Transaction, etx.raw, height=height, position=position
|
|
)
|
|
# Inputs
|
|
spent_claims, spent_supports, spent_others = timer.run(
|
|
self.split_inputs_into_claims_supports_and_other, tx.inputs
|
|
)
|
|
body_timer.start()
|
|
delete_claim_hashes.update({r.claim_hash for r in spent_claims})
|
|
deleted_claim_names.update({r.normalized for r in spent_claims})
|
|
delete_support_txo_hashes.update({r.txo_hash for r in spent_supports})
|
|
recalculate_claim_hashes.update({r.claim_hash for r in spent_supports})
|
|
delete_others.update(spent_others)
|
|
# Outputs
|
|
for output in tx.outputs:
|
|
if output.is_support:
|
|
insert_supports.append(output)
|
|
recalculate_claim_hashes.add(output.claim_hash)
|
|
elif output.script.is_claim_name:
|
|
insert_claims.append(output)
|
|
recalculate_claim_hashes.add(output.claim_hash)
|
|
elif output.script.is_update_claim:
|
|
claim_hash = output.claim_hash
|
|
update_claims.append(output)
|
|
recalculate_claim_hashes.add(claim_hash)
|
|
body_timer.stop()
|
|
|
|
skip_update_claim_timer = timer.add_timer('skip update of abandoned claims')
|
|
skip_update_claim_timer.start()
|
|
for updated_claim in list(update_claims):
|
|
if updated_claim.ref.hash in delete_others:
|
|
update_claims.remove(updated_claim)
|
|
for updated_claim in update_claims:
|
|
claim_hash = updated_claim.claim_hash
|
|
delete_claim_hashes.discard(claim_hash)
|
|
update_claim_hashes.add(claim_hash)
|
|
skip_update_claim_timer.stop()
|
|
|
|
skip_insert_claim_timer = timer.add_timer('skip insertion of abandoned claims')
|
|
skip_insert_claim_timer.start()
|
|
for new_claim in list(insert_claims):
|
|
if new_claim.ref.hash in delete_others:
|
|
if new_claim.claim_hash not in update_claim_hashes:
|
|
insert_claims.remove(new_claim)
|
|
skip_insert_claim_timer.stop()
|
|
|
|
skip_insert_support_timer = timer.add_timer('skip insertion of abandoned supports')
|
|
skip_insert_support_timer.start()
|
|
for new_support in list(insert_supports):
|
|
if new_support.ref.hash in delete_others:
|
|
insert_supports.remove(new_support)
|
|
skip_insert_support_timer.stop()
|
|
|
|
expire_timer = timer.add_timer('recording expired claims')
|
|
expire_timer.start()
|
|
for expired in self.get_expiring(height):
|
|
delete_claim_hashes.add(expired.claim_hash)
|
|
deleted_claim_names.add(expired.normalized)
|
|
expire_timer.stop()
|
|
|
|
r = timer.run
|
|
affected_channels = r(self.delete_claims, delete_claim_hashes)
|
|
r(self.delete_supports, delete_support_txo_hashes)
|
|
r(self.insert_claims, insert_claims, header)
|
|
r(self.calculate_reposts, insert_claims)
|
|
r(self.update_claims, update_claims, header)
|
|
r(self.validate_channel_signatures, height, insert_claims,
|
|
update_claims, delete_claim_hashes, affected_channels, forward_timer=True)
|
|
r(self.insert_supports, insert_supports)
|
|
r(self.update_claimtrie, height, recalculate_claim_hashes, deleted_claim_names, forward_timer=True)
|
|
for algorithm in self.trending:
|
|
r(algorithm.run, self.db.cursor(), height, daemon_height, recalculate_claim_hashes)
|
|
|
|
|
|
class LBRYLevelDB(LevelDB):
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
super().__init__(*args, **kwargs)
|
|
path = os.path.join(self.env.db_dir, 'claims.db')
|
|
trending = []
|
|
for algorithm_name in self.env.trending_algorithms:
|
|
if algorithm_name in TRENDING_ALGORITHMS:
|
|
trending.append(TRENDING_ALGORITHMS[algorithm_name])
|
|
if self.env.es_mode == 'reader':
|
|
self.logger.info('Index mode: reader')
|
|
self.sql = None
|
|
else:
|
|
self.logger.info('Index mode: writer. Using SQLite db to sync ES')
|
|
self.sql = SQLDB(
|
|
self, path,
|
|
self.env.default('BLOCKING_CHANNEL_IDS', '').split(' '),
|
|
self.env.default('FILTERING_CHANNEL_IDS', '').split(' '),
|
|
trending
|
|
)
|
|
|
|
# Search index
|
|
self.search_index = SearchIndex(self.env.es_index_prefix)
|
|
|
|
def close(self):
|
|
super().close()
|
|
if self.sql:
|
|
self.sql.close()
|
|
|
|
async def _open_dbs(self, *args, **kwargs):
|
|
await self.search_index.start()
|
|
await super()._open_dbs(*args, **kwargs)
|
|
if self.sql:
|
|
self.sql.open()
|