fd7bfbea78
-make batches of claim txos from the iterator, and sort by tx hash before fetching to maximize cache and read ahead hits
1390 lines
59 KiB
Python
1390 lines
59 KiB
Python
# Copyright (c) 2016, Neil Booth
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# Copyright (c) 2017, the ElectrumX authors
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#
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# All rights reserved.
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#
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# See the file "LICENCE" for information about the copyright
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# and warranty status of this software.
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"""Interface to the blockchain database."""
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import asyncio
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import array
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import os
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import time
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import typing
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import struct
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import attr
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import zlib
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import base64
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from typing import Optional, Iterable, Tuple, DefaultDict, Set, Dict, List
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from functools import partial
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from asyncio import sleep
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from bisect import bisect_right, bisect_left
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from collections import defaultdict
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from glob import glob
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from struct import pack, unpack
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from concurrent.futures.thread import ThreadPoolExecutor
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from lbry.utils import LRUCacheWithMetrics
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from lbry.schema.url import URL
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from lbry.wallet.server import util
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from lbry.wallet.server.hash import hash_to_hex_str, CLAIM_HASH_LEN
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from lbry.wallet.server.tx import TxInput
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from lbry.wallet.server.merkle import Merkle, MerkleCache
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from lbry.wallet.server.util import formatted_time, pack_be_uint16, unpack_be_uint16_from
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from lbry.wallet.server.storage import db_class
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from lbry.wallet.server.db.revertable import RevertablePut, RevertableDelete, RevertableOp, delete_prefix
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from lbry.wallet.server.db import DB_PREFIXES
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from lbry.wallet.server.db.common import ResolveResult, STREAM_TYPES, CLAIM_TYPES
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from lbry.wallet.server.db.prefixes import Prefixes, PendingActivationValue, ClaimTakeoverValue, ClaimToTXOValue
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from lbry.wallet.server.db.prefixes import ACTIVATED_CLAIM_TXO_TYPE, ACTIVATED_SUPPORT_TXO_TYPE
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from lbry.wallet.server.db.prefixes import PendingActivationKey, ClaimToTXOKey, TXOToClaimValue
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from lbry.wallet.server.db.claimtrie import length_encoded_name
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from lbry.wallet.transaction import OutputScript
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from lbry.schema.claim import Claim, guess_stream_type
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from lbry.wallet.ledger import Ledger, RegTestLedger, TestNetLedger
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from lbry.wallet.server.db.elasticsearch import SearchIndex
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class UTXO(typing.NamedTuple):
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tx_num: int
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tx_pos: int
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tx_hash: bytes
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height: int
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value: int
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TXO_STRUCT = struct.Struct(b'>LH')
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TXO_STRUCT_unpack = TXO_STRUCT.unpack
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TXO_STRUCT_pack = TXO_STRUCT.pack
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@attr.s(slots=True)
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class FlushData:
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height = attr.ib()
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tx_count = attr.ib()
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headers = attr.ib()
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block_hashes = attr.ib()
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block_txs = attr.ib()
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claimtrie_stash = attr.ib()
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# The following are flushed to the UTXO DB if undo_infos is not None
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undo_infos = attr.ib()
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adds = attr.ib()
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deletes = attr.ib()
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tip = attr.ib()
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undo = attr.ib()
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OptionalResolveResultOrError = Optional[typing.Union[ResolveResult, LookupError, ValueError]]
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DB_STATE_STRUCT = struct.Struct(b'>32sLL32sLLBBlll')
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DB_STATE_STRUCT_SIZE = 94
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class DBState(typing.NamedTuple):
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genesis: bytes
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height: int
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tx_count: int
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tip: bytes
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utxo_flush_count: int
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wall_time: int
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first_sync: bool
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db_version: int
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hist_flush_count: int
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comp_flush_count: int
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comp_cursor: int
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def pack(self) -> bytes:
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return DB_STATE_STRUCT.pack(
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self.genesis, self.height, self.tx_count, self.tip, self.utxo_flush_count,
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self.wall_time, 1 if self.first_sync else 0, self.db_version, self.hist_flush_count,
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self.comp_flush_count, self.comp_cursor
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)
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@classmethod
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def unpack(cls, packed: bytes) -> 'DBState':
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return cls(*DB_STATE_STRUCT.unpack(packed[:DB_STATE_STRUCT_SIZE]))
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class DBError(Exception):
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"""Raised on general DB errors generally indicating corruption."""
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class LevelDB:
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DB_VERSIONS = HIST_DB_VERSIONS = [7]
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def __init__(self, env):
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self.logger = util.class_logger(__name__, self.__class__.__name__)
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self.env = env
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self.coin = env.coin
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self.executor = None
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self.logger.info(f'switching current directory to {env.db_dir}')
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self.db_class = db_class(env.db_dir, self.env.db_engine)
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self.db = None
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self.hist_unflushed = defaultdict(partial(array.array, 'I'))
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self.hist_unflushed_count = 0
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self.hist_flush_count = 0
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self.hist_comp_flush_count = -1
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self.hist_comp_cursor = -1
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self.tx_counts = None
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self.headers = None
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self.encoded_headers = LRUCacheWithMetrics(1 << 21, metric_name='encoded_headers', namespace='wallet_server')
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self.last_flush = time.time()
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self.logger.info(f'using {self.env.db_engine} for DB backend')
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# Header merkle cache
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self.merkle = Merkle()
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self.header_mc = MerkleCache(self.merkle, self.fs_block_hashes)
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self.headers_db = None
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self.tx_db = None
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self._tx_and_merkle_cache = LRUCacheWithMetrics(2 ** 17, metric_name='tx_and_merkle', namespace="wallet_server")
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self.total_transactions = None
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self.transaction_num_mapping = {}
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# Search index
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self.search_index = SearchIndex(self.env.es_index_prefix, self.env.database_query_timeout)
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self.genesis_bytes = bytes.fromhex(self.coin.GENESIS_HASH)
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if env.coin.NET == 'mainnet':
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self.ledger = Ledger
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elif env.coin.NET == 'testnet':
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self.ledger = TestNetLedger
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else:
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self.ledger = RegTestLedger
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def get_claim_from_txo(self, tx_num: int, tx_idx: int) -> Optional[TXOToClaimValue]:
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claim_hash_and_name = self.db.get(Prefixes.txo_to_claim.pack_key(tx_num, tx_idx))
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if not claim_hash_and_name:
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return
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return Prefixes.txo_to_claim.unpack_value(claim_hash_and_name)
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def get_repost(self, claim_hash) -> Optional[bytes]:
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repost = self.db.get(Prefixes.repost.pack_key(claim_hash))
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if repost:
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return Prefixes.repost.unpack_value(repost).reposted_claim_hash
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return
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def get_reposted_count(self, claim_hash: bytes) -> int:
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cnt = 0
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for _ in self.db.iterator(prefix=Prefixes.reposted_claim.pack_partial_key(claim_hash)):
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cnt += 1
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return cnt
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def get_activation(self, tx_num, position, is_support=False) -> int:
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activation = self.db.get(
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Prefixes.activated.pack_key(
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ACTIVATED_SUPPORT_TXO_TYPE if is_support else ACTIVATED_CLAIM_TXO_TYPE, tx_num, position
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)
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)
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if activation:
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return Prefixes.activated.unpack_value(activation).height
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return -1
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def get_supported_claim_from_txo(self, tx_num: int, position: int) -> typing.Tuple[Optional[bytes], Optional[int]]:
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key = Prefixes.support_to_claim.pack_key(tx_num, position)
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supported_claim_hash = self.db.get(key)
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if supported_claim_hash:
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packed_support_amount = self.db.get(
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Prefixes.claim_to_support.pack_key(supported_claim_hash, tx_num, position)
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)
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if packed_support_amount:
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return supported_claim_hash, Prefixes.claim_to_support.unpack_value(packed_support_amount).amount
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return None, None
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def get_support_amount(self, claim_hash: bytes):
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total = 0
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for packed in self.db.iterator(prefix=DB_PREFIXES.claim_to_support.value + claim_hash, include_key=False):
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total += Prefixes.claim_to_support.unpack_value(packed).amount
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return total
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def get_supports(self, claim_hash: bytes):
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supports = []
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for k, v in self.db.iterator(prefix=DB_PREFIXES.claim_to_support.value + claim_hash):
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unpacked_k = Prefixes.claim_to_support.unpack_key(k)
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unpacked_v = Prefixes.claim_to_support.unpack_value(v)
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supports.append((unpacked_k.tx_num, unpacked_k.position, unpacked_v.amount))
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return supports
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def _prepare_resolve_result(self, tx_num: int, position: int, claim_hash: bytes, name: str, root_tx_num: int,
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root_position: int, activation_height: int, signature_valid: bool) -> ResolveResult:
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controlling_claim = self.get_controlling_claim(name)
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tx_hash = self.total_transactions[tx_num]
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height = bisect_right(self.tx_counts, tx_num)
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created_height = bisect_right(self.tx_counts, root_tx_num)
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last_take_over_height = controlling_claim.height
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expiration_height = self.coin.get_expiration_height(height)
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support_amount = self.get_support_amount(claim_hash)
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claim_amount = self.get_claim_txo_amount(claim_hash)
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effective_amount = support_amount + claim_amount
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channel_hash = self.get_channel_for_claim(claim_hash)
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reposted_claim_hash = self.get_repost(claim_hash)
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short_url = f'{name}#{claim_hash.hex()}'
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canonical_url = short_url
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claims_in_channel = self.get_claims_in_channel_count(claim_hash)
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if channel_hash:
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channel_vals = self.get_claim_txo(channel_hash)
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if channel_vals:
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channel_name = channel_vals.name
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canonical_url = f'{channel_name}#{channel_hash.hex()}/{name}#{claim_hash.hex()}'
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return ResolveResult(
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name, claim_hash, tx_num, position, tx_hash, height, claim_amount, short_url=short_url,
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is_controlling=controlling_claim.claim_hash == claim_hash, canonical_url=canonical_url,
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last_takeover_height=last_take_over_height, claims_in_channel=claims_in_channel,
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creation_height=created_height, activation_height=activation_height,
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expiration_height=expiration_height, effective_amount=effective_amount, support_amount=support_amount,
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channel_hash=channel_hash, reposted_claim_hash=reposted_claim_hash,
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reposted=self.get_reposted_count(claim_hash),
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signature_valid=None if not channel_hash else signature_valid
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)
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def _resolve(self, normalized_name: str, claim_id: Optional[str] = None,
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amount_order: Optional[int] = None) -> Optional[ResolveResult]:
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"""
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:param normalized_name: name
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:param claim_id: partial or complete claim id
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:param amount_order: '$<value>' suffix to a url, defaults to 1 (winning) if no claim id modifier is provided
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"""
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if (not amount_order and not claim_id) or amount_order == 1:
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# winning resolution
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controlling = self.get_controlling_claim(normalized_name)
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if not controlling:
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# print(f"none controlling for lbry://{normalized_name}")
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return
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# print(f"resolved controlling lbry://{normalized_name}#{controlling.claim_hash.hex()}")
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return self._fs_get_claim_by_hash(controlling.claim_hash)
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amount_order = max(int(amount_order or 1), 1)
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if claim_id:
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# resolve by partial/complete claim id
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short_claim_hash = bytes.fromhex(claim_id)
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prefix = Prefixes.claim_short_id.pack_partial_key(normalized_name, short_claim_hash)
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for k, v in self.db.iterator(prefix=prefix):
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key = Prefixes.claim_short_id.unpack_key(k)
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claim_txo = Prefixes.claim_short_id.unpack_value(v)
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signature_is_valid = self.get_claim_txo(key.claim_hash).channel_signature_is_valid
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return self._prepare_resolve_result(
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claim_txo.tx_num, claim_txo.position, key.claim_hash, key.name, key.root_tx_num,
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key.root_position, self.get_activation(claim_txo.tx_num, claim_txo.position),
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signature_is_valid
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)
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return
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# resolve by amount ordering, 1 indexed
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prefix = Prefixes.effective_amount.pack_partial_key(normalized_name)
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for idx, (k, v) in enumerate(self.db.iterator(prefix=prefix)):
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if amount_order > idx + 1:
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continue
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key = Prefixes.effective_amount.unpack_key(k)
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claim_val = Prefixes.effective_amount.unpack_value(v)
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claim_txo = self.get_claim_txo(claim_val.claim_hash)
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activation = self.get_activation(key.tx_num, key.position)
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return self._prepare_resolve_result(
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key.tx_num, key.position, claim_val.claim_hash, key.name, claim_txo.root_tx_num,
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claim_txo.root_position, activation, claim_txo.channel_signature_is_valid
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)
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return
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def _resolve_claim_in_channel(self, channel_hash: bytes, normalized_name: str):
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prefix = DB_PREFIXES.channel_to_claim.value + channel_hash + length_encoded_name(normalized_name)
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candidates = []
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for k, v in self.db.iterator(prefix=prefix):
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key = Prefixes.channel_to_claim.unpack_key(k)
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stream = Prefixes.channel_to_claim.unpack_value(v)
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effective_amount = self.get_effective_amount(stream.claim_hash)
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if not candidates or candidates[-1][-1] == effective_amount:
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candidates.append((stream.claim_hash, key.tx_num, key.position, effective_amount))
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else:
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break
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if not candidates:
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return
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return list(sorted(candidates, key=lambda item: item[1]))[0]
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def _fs_resolve(self, url) -> typing.Tuple[OptionalResolveResultOrError, OptionalResolveResultOrError]:
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try:
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parsed = URL.parse(url)
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except ValueError as e:
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return e, None
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stream = channel = resolved_channel = resolved_stream = None
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if parsed.has_stream_in_channel:
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channel = parsed.channel
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stream = parsed.stream
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elif parsed.has_channel:
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channel = parsed.channel
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elif parsed.has_stream:
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stream = parsed.stream
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if channel:
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resolved_channel = self._resolve(channel.normalized, channel.claim_id, channel.amount_order)
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if not resolved_channel:
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return None, LookupError(f'Could not find channel in "{url}".')
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if stream:
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if resolved_channel:
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stream_claim = self._resolve_claim_in_channel(resolved_channel.claim_hash, stream.normalized)
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if stream_claim:
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stream_claim_id, stream_tx_num, stream_tx_pos, effective_amount = stream_claim
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resolved_stream = self._fs_get_claim_by_hash(stream_claim_id)
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else:
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resolved_stream = self._resolve(stream.normalized, stream.claim_id, stream.amount_order)
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if not channel and not resolved_channel and resolved_stream and resolved_stream.channel_hash:
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resolved_channel = self._fs_get_claim_by_hash(resolved_stream.channel_hash)
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if not resolved_stream:
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return LookupError(f'Could not find claim at "{url}".'), None
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return resolved_stream, resolved_channel
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async def fs_resolve(self, url) -> typing.Tuple[OptionalResolveResultOrError, OptionalResolveResultOrError]:
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return await asyncio.get_event_loop().run_in_executor(self.executor, self._fs_resolve, url)
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def _fs_get_claim_by_hash(self, claim_hash):
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claim = self.db.get(Prefixes.claim_to_txo.pack_key(claim_hash))
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if claim:
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v = Prefixes.claim_to_txo.unpack_value(claim)
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activation_height = self.get_activation(v.tx_num, v.position)
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return self._prepare_resolve_result(
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v.tx_num, v.position, claim_hash, v.name,
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v.root_tx_num, v.root_position, activation_height, v.channel_signature_is_valid
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)
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async def fs_getclaimbyid(self, claim_id):
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return await asyncio.get_event_loop().run_in_executor(
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self.executor, self._fs_get_claim_by_hash, bytes.fromhex(claim_id)
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)
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def get_claim_txo_amount(self, claim_hash: bytes) -> Optional[int]:
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v = self.db.get(Prefixes.claim_to_txo.pack_key(claim_hash))
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if v:
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return Prefixes.claim_to_txo.unpack_value(v).amount
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def get_support_txo_amount(self, claim_hash: bytes, tx_num: int, position: int) -> Optional[int]:
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v = self.db.get(Prefixes.claim_to_support.pack_key(claim_hash, tx_num, position))
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if v:
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return Prefixes.claim_to_support.unpack_value(v).amount
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def get_claim_txo(self, claim_hash: bytes) -> Optional[ClaimToTXOValue]:
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assert claim_hash
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v = self.db.get(Prefixes.claim_to_txo.pack_key(claim_hash))
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if v:
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return Prefixes.claim_to_txo.unpack_value(v)
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def _get_active_amount(self, claim_hash: bytes, txo_type: int, height: int) -> int:
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return sum(
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Prefixes.active_amount.unpack_value(v).amount
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for v in self.db.iterator(start=Prefixes.active_amount.pack_partial_key(
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claim_hash, txo_type, 0), stop=Prefixes.active_amount.pack_partial_key(
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claim_hash, txo_type, height), include_key=False)
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)
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def get_effective_amount(self, claim_hash: bytes, support_only=False) -> int:
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support_amount = self._get_active_amount(claim_hash, ACTIVATED_SUPPORT_TXO_TYPE, self.db_height + 1)
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if support_only:
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return support_only
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return support_amount + self._get_active_amount(claim_hash, ACTIVATED_CLAIM_TXO_TYPE, self.db_height + 1)
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def get_claims_for_name(self, name):
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claims = []
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for _k, _v in self.db.iterator(prefix=Prefixes.claim_short_id.pack_partial_key(name)):
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k, v = Prefixes.claim_short_id.unpack_key(_k), Prefixes.claim_short_id.unpack_value(_v)
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# claims[v.claim_hash] = (k, v)
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if k.claim_hash not in claims:
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claims.append(k.claim_hash)
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return claims
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def get_claims_in_channel_count(self, channel_hash) -> int:
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count = 0
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for _ in self.db.iterator(prefix=Prefixes.channel_to_claim.pack_partial_key(channel_hash), include_key=False):
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count += 1
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return count
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def get_channel_for_claim(self, claim_hash) -> Optional[bytes]:
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return self.db.get(Prefixes.claim_to_channel.pack_key(claim_hash))
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def get_expired_by_height(self, height: int) -> Dict[bytes, Tuple[int, int, str, TxInput]]:
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expired = {}
|
|
for _k, _v in self.db.iterator(prefix=Prefixes.claim_expiration.pack_partial_key(height)):
|
|
k, v = Prefixes.claim_expiration.unpack_item(_k, _v)
|
|
tx_hash = self.total_transactions[k.tx_num]
|
|
tx = self.coin.transaction(self.db.get(DB_PREFIXES.TX_PREFIX.value + tx_hash))
|
|
# treat it like a claim spend so it will delete/abandon properly
|
|
# the _spend_claim function this result is fed to expects a txi, so make a mock one
|
|
# print(f"\texpired lbry://{v.name} {v.claim_hash.hex()}")
|
|
expired[v.claim_hash] = (
|
|
k.tx_num, k.position, v.name,
|
|
TxInput(prev_hash=tx_hash, prev_idx=k.position, script=tx.outputs[k.position].pk_script, sequence=0)
|
|
)
|
|
return expired
|
|
|
|
def get_controlling_claim(self, name: str) -> Optional[ClaimTakeoverValue]:
|
|
controlling = self.db.get(Prefixes.claim_takeover.pack_key(name))
|
|
if not controlling:
|
|
return
|
|
return Prefixes.claim_takeover.unpack_value(controlling)
|
|
|
|
def get_claim_txos_for_name(self, name: str):
|
|
txos = {}
|
|
for k, v in self.db.iterator(prefix=Prefixes.claim_short_id.pack_partial_key(name)):
|
|
claim_hash = Prefixes.claim_short_id.unpack_key(k).claim_hash
|
|
tx_num, nout = Prefixes.claim_short_id.unpack_value(v)
|
|
txos[claim_hash] = tx_num, nout
|
|
return txos
|
|
|
|
def get_claim_metadata(self, tx_hash, nout):
|
|
raw = self.db.get(
|
|
DB_PREFIXES.TX_PREFIX.value + tx_hash
|
|
)
|
|
try:
|
|
output = self.coin.transaction(raw).outputs[nout]
|
|
script = OutputScript(output.pk_script)
|
|
script.parse()
|
|
return Claim.from_bytes(script.values['claim'])
|
|
except:
|
|
self.logger.error(
|
|
"tx parsing for ES went boom %s %s", tx_hash[::-1].hex(),
|
|
raw.hex()
|
|
)
|
|
return
|
|
|
|
def _prepare_claim_for_sync(self, claim_hash: bytes):
|
|
claim = self._fs_get_claim_by_hash(claim_hash)
|
|
if not claim:
|
|
print("wat")
|
|
return
|
|
return self._prepare_claim_metadata(claim_hash, claim)
|
|
|
|
def _prepare_claim_metadata(self, claim_hash: bytes, claim: ResolveResult):
|
|
metadata = self.get_claim_metadata(claim.tx_hash, claim.position)
|
|
if not metadata:
|
|
return
|
|
|
|
reposted_claim_hash = None if not metadata.is_repost else metadata.repost.reference.claim_hash[::-1]
|
|
reposted_claim = None
|
|
reposted_metadata = None
|
|
if reposted_claim_hash:
|
|
reposted_claim = self.get_claim_txo(reposted_claim_hash)
|
|
if not reposted_claim:
|
|
return
|
|
reposted_metadata = self.get_claim_metadata(
|
|
self.total_transactions[reposted_claim.tx_num], reposted_claim.position
|
|
)
|
|
if not reposted_metadata:
|
|
return
|
|
reposted_tags = []
|
|
reposted_languages = []
|
|
reposted_has_source = None
|
|
reposted_claim_type = None
|
|
if reposted_claim:
|
|
reposted_tx_hash = self.total_transactions[reposted_claim.tx_num]
|
|
raw_reposted_claim_tx = self.db.get(
|
|
DB_PREFIXES.TX_PREFIX.value + reposted_tx_hash
|
|
)
|
|
try:
|
|
reposted_claim_txo = self.coin.transaction(
|
|
raw_reposted_claim_tx
|
|
).outputs[reposted_claim.position]
|
|
reposted_script = OutputScript(reposted_claim_txo.pk_script)
|
|
reposted_script.parse()
|
|
except:
|
|
self.logger.error(
|
|
"repost tx parsing for ES went boom %s %s", reposted_tx_hash[::-1].hex(),
|
|
raw_reposted_claim_tx.hex()
|
|
)
|
|
return
|
|
try:
|
|
reposted_metadata = Claim.from_bytes(reposted_script.values['claim'])
|
|
except:
|
|
self.logger.error(
|
|
"reposted claim parsing for ES went boom %s %s", reposted_tx_hash[::-1].hex(),
|
|
raw_reposted_claim_tx.hex()
|
|
)
|
|
return
|
|
if reposted_metadata:
|
|
reposted_tags = [] if not reposted_metadata.is_stream else [tag for tag in reposted_metadata.stream.tags]
|
|
reposted_languages = [] if not reposted_metadata.is_stream else (
|
|
[lang.language or 'none' for lang in reposted_metadata.stream.languages] or ['none']
|
|
)
|
|
reposted_has_source = False if not reposted_metadata.is_stream else reposted_metadata.stream.has_source
|
|
reposted_claim_type = CLAIM_TYPES[reposted_metadata.claim_type]
|
|
claim_tags = [] if not metadata.is_stream else [tag for tag in metadata.stream.tags]
|
|
claim_languages = [] if not metadata.is_stream else (
|
|
[lang.language or 'none' for lang in metadata.stream.languages] or ['none']
|
|
)
|
|
tags = list(set(claim_tags).union(set(reposted_tags)))
|
|
languages = list(set(claim_languages).union(set(reposted_languages)))
|
|
canonical_url = f'{claim.name}#{claim.claim_hash.hex()}'
|
|
if metadata.is_signed:
|
|
channel = self.get_claim_txo(metadata.signing_channel_hash[::-1])
|
|
if channel:
|
|
canonical_url = f'{channel.name}#{metadata.signing_channel_hash[::-1].hex()}/{canonical_url}'
|
|
|
|
value = {
|
|
'claim_hash': claim_hash[::-1],
|
|
# 'claim_id': claim_hash.hex(),
|
|
'claim_name': claim.name,
|
|
'normalized': claim.name,
|
|
'tx_id': claim.tx_hash[::-1].hex(),
|
|
'tx_num': claim.tx_num,
|
|
'tx_nout': claim.position,
|
|
'amount': claim.amount,
|
|
'timestamp': 0, # TODO: fix
|
|
'creation_timestamp': 0, # TODO: fix
|
|
'height': claim.height,
|
|
'creation_height': claim.creation_height,
|
|
'activation_height': claim.activation_height,
|
|
'expiration_height': claim.expiration_height,
|
|
'effective_amount': claim.effective_amount,
|
|
'support_amount': claim.support_amount,
|
|
'is_controlling': claim.is_controlling,
|
|
'last_take_over_height': claim.last_takeover_height,
|
|
|
|
'short_url': f'{claim.name}#{claim.claim_hash.hex()}', # TODO: fix
|
|
'canonical_url': canonical_url,
|
|
|
|
'title': None if not metadata.is_stream else metadata.stream.title,
|
|
'author': None if not metadata.is_stream else metadata.stream.author,
|
|
'description': None if not metadata.is_stream else metadata.stream.description,
|
|
'claim_type': CLAIM_TYPES[metadata.claim_type],
|
|
'has_source': None if not metadata.is_stream else metadata.stream.has_source,
|
|
'stream_type': None if not metadata.is_stream else STREAM_TYPES[
|
|
guess_stream_type(metadata.stream.source.media_type)],
|
|
'media_type': None if not metadata.is_stream else metadata.stream.source.media_type,
|
|
'fee_amount': None if not metadata.is_stream or not metadata.stream.has_fee else int(
|
|
max(metadata.stream.fee.amount or 0, 0) * 1000
|
|
),
|
|
'fee_currency': None if not metadata.is_stream else metadata.stream.fee.currency,
|
|
|
|
'reposted': self.get_reposted_count(claim_hash),
|
|
'reposted_claim_hash': reposted_claim_hash,
|
|
'reposted_claim_type': reposted_claim_type,
|
|
'reposted_has_source': reposted_has_source,
|
|
|
|
'channel_hash': metadata.signing_channel_hash,
|
|
|
|
'public_key_bytes': None if not metadata.is_channel else metadata.channel.public_key_bytes,
|
|
'public_key_hash': None if not metadata.is_channel else self.ledger.address_to_hash160(
|
|
self.ledger.public_key_to_address(metadata.channel.public_key_bytes)
|
|
),
|
|
'signature': metadata.signature,
|
|
'signature_digest': None, # TODO: fix
|
|
'signature_valid': claim.signature_valid,
|
|
'tags': tags,
|
|
'languages': languages,
|
|
'censor_type': 0, # TODO: fix
|
|
'censoring_channel_hash': None, # TODO: fix
|
|
'claims_in_channel': None if not metadata.is_channel else self.get_claims_in_channel_count(claim_hash)
|
|
# 'trending_group': 0,
|
|
# 'trending_mixed': 0,
|
|
# 'trending_local': 0,
|
|
# 'trending_global': 0,
|
|
}
|
|
if metadata.is_stream and (metadata.stream.video.duration or metadata.stream.audio.duration):
|
|
value['duration'] = metadata.stream.video.duration or metadata.stream.audio.duration
|
|
if metadata.is_stream and metadata.stream.release_time:
|
|
value['release_time'] = metadata.stream.release_time
|
|
return value
|
|
|
|
def all_claims_producer(self, batch_size=500_000):
|
|
batch = []
|
|
for claim_hash in self.db.iterator(prefix=Prefixes.claim_to_txo.prefix, include_value=False):
|
|
claim = self._fs_get_claim_by_hash(claim_hash[1:])
|
|
if claim:
|
|
batch.append(claim)
|
|
if len(batch) == batch_size:
|
|
batch.sort(key=lambda x: x.tx_hash)
|
|
for claim in batch:
|
|
meta = self._prepare_claim_metadata(claim.claim_hash, claim)
|
|
if meta:
|
|
yield meta
|
|
batch.clear()
|
|
batch.sort(key=lambda x: x.tx_hash)
|
|
for claim in batch:
|
|
meta = self._prepare_claim_metadata(claim.claim_hash, claim)
|
|
if meta:
|
|
yield meta
|
|
batch.clear()
|
|
|
|
def claims_producer(self, claim_hashes: Set[bytes]):
|
|
batch = []
|
|
for claim_hash in claim_hashes:
|
|
claim = self._fs_get_claim_by_hash(claim_hash)
|
|
if claim:
|
|
batch.append(claim)
|
|
batch.sort(key=lambda x: x.tx_hash)
|
|
for claim in batch:
|
|
meta = self._prepare_claim_metadata(claim.claim_hash, claim)
|
|
if meta:
|
|
yield meta
|
|
|
|
def get_activated_at_height(self, height: int) -> DefaultDict[PendingActivationValue, List[PendingActivationKey]]:
|
|
activated = defaultdict(list)
|
|
for _k, _v in self.db.iterator(prefix=Prefixes.pending_activation.pack_partial_key(height)):
|
|
k = Prefixes.pending_activation.unpack_key(_k)
|
|
v = Prefixes.pending_activation.unpack_value(_v)
|
|
activated[v].append(k)
|
|
return activated
|
|
|
|
def get_future_activated(self, height: int) -> DefaultDict[PendingActivationValue, List[PendingActivationKey]]:
|
|
activated = defaultdict(list)
|
|
start_prefix = Prefixes.pending_activation.pack_partial_key(height + 1)
|
|
stop_prefix = Prefixes.pending_activation.pack_partial_key(height + 1 + self.coin.maxTakeoverDelay)
|
|
for _k, _v in self.db.iterator(start=start_prefix, stop=stop_prefix):
|
|
k = Prefixes.pending_activation.unpack_key(_k)
|
|
v = Prefixes.pending_activation.unpack_value(_v)
|
|
activated[v].append(k)
|
|
|
|
return activated
|
|
|
|
async def _read_tx_counts(self):
|
|
if self.tx_counts is not None:
|
|
return
|
|
# tx_counts[N] has the cumulative number of txs at the end of
|
|
# height N. So tx_counts[0] is 1 - the genesis coinbase
|
|
|
|
def get_counts():
|
|
return tuple(
|
|
util.unpack_be_uint64(tx_count)
|
|
for tx_count in self.db.iterator(prefix=DB_PREFIXES.TX_COUNT_PREFIX.value, include_key=False)
|
|
)
|
|
|
|
tx_counts = await asyncio.get_event_loop().run_in_executor(self.executor, get_counts)
|
|
assert len(tx_counts) == self.db_height + 1, f"{len(tx_counts)} vs {self.db_height + 1}"
|
|
self.tx_counts = array.array('I', tx_counts)
|
|
|
|
if self.tx_counts:
|
|
assert self.db_tx_count == self.tx_counts[-1], \
|
|
f"{self.db_tx_count} vs {self.tx_counts[-1]} ({len(self.tx_counts)} counts)"
|
|
else:
|
|
assert self.db_tx_count == 0
|
|
|
|
async def _read_txids(self):
|
|
def get_txids():
|
|
return list(self.db.iterator(prefix=DB_PREFIXES.TX_HASH_PREFIX.value, include_key=False))
|
|
|
|
start = time.perf_counter()
|
|
self.logger.info("loading txids")
|
|
txids = await asyncio.get_event_loop().run_in_executor(self.executor, get_txids)
|
|
assert len(txids) == len(self.tx_counts) == 0 or len(txids) == self.tx_counts[-1]
|
|
self.total_transactions = txids
|
|
self.transaction_num_mapping = {
|
|
txid: i for i, txid in enumerate(txids)
|
|
}
|
|
ts = time.perf_counter() - start
|
|
self.logger.info("loaded %i txids in %ss", len(self.total_transactions), round(ts, 4))
|
|
|
|
async def _read_headers(self):
|
|
if self.headers is not None:
|
|
return
|
|
|
|
def get_headers():
|
|
return [
|
|
header for header in self.db.iterator(prefix=DB_PREFIXES.HEADER_PREFIX.value, include_key=False)
|
|
]
|
|
|
|
headers = await asyncio.get_event_loop().run_in_executor(self.executor, get_headers)
|
|
assert len(headers) - 1 == self.db_height, f"{len(headers)} vs {self.db_height}"
|
|
self.headers = headers
|
|
|
|
async def open_dbs(self):
|
|
if self.db:
|
|
return
|
|
if self.executor is None:
|
|
self.executor = ThreadPoolExecutor(1)
|
|
|
|
assert self.db is None
|
|
self.db = self.db_class(f'lbry-{self.env.db_engine}', True)
|
|
if self.db.is_new:
|
|
self.logger.info('created new db: %s', f'lbry-{self.env.db_engine}')
|
|
else:
|
|
self.logger.info(f'opened db: %s', f'lbry-{self.env.db_engine}')
|
|
|
|
# read db state
|
|
self.read_db_state()
|
|
|
|
# These are our state as we move ahead of DB state
|
|
self.fs_height = self.db_height
|
|
self.fs_tx_count = self.db_tx_count
|
|
self.last_flush_tx_count = self.fs_tx_count
|
|
|
|
# Log some stats
|
|
self.logger.info(f'DB version: {self.db_version:d}')
|
|
self.logger.info(f'coin: {self.coin.NAME}')
|
|
self.logger.info(f'network: {self.coin.NET}')
|
|
self.logger.info(f'height: {self.db_height:,d}')
|
|
self.logger.info(f'tip: {hash_to_hex_str(self.db_tip)}')
|
|
self.logger.info(f'tx count: {self.db_tx_count:,d}')
|
|
if self.db.for_sync:
|
|
self.logger.info(f'flushing DB cache at {self.env.cache_MB:,d} MB')
|
|
if self.first_sync:
|
|
self.logger.info(f'sync time so far: {util.formatted_time(self.wall_time)}')
|
|
if self.hist_db_version not in self.DB_VERSIONS:
|
|
msg = f'this software only handles DB versions {self.DB_VERSIONS}'
|
|
self.logger.error(msg)
|
|
raise RuntimeError(msg)
|
|
self.logger.info(f'flush count: {self.hist_flush_count:,d}')
|
|
|
|
# self.history.clear_excess(self.utxo_flush_count)
|
|
# < might happen at end of compaction as both DBs cannot be
|
|
# updated atomically
|
|
if self.hist_flush_count > self.utxo_flush_count:
|
|
self.logger.info('DB shut down uncleanly. Scanning for excess history flushes...')
|
|
|
|
keys = []
|
|
for key, hist in self.db.iterator(prefix=DB_PREFIXES.HASHX_HISTORY_PREFIX.value):
|
|
k = key[1:]
|
|
flush_id = int.from_bytes(k[-4:], byteorder='big')
|
|
if flush_id > self.utxo_flush_count:
|
|
keys.append(k)
|
|
|
|
self.logger.info(f'deleting {len(keys):,d} history entries')
|
|
|
|
self.hist_flush_count = self.utxo_flush_count
|
|
with self.db.write_batch() as batch:
|
|
for key in keys:
|
|
batch.delete(DB_PREFIXES.HASHX_HISTORY_PREFIX.value + key)
|
|
if keys:
|
|
self.logger.info('deleted %i excess history entries', len(keys))
|
|
|
|
self.utxo_flush_count = self.hist_flush_count
|
|
|
|
min_height = self.min_undo_height(self.db_height)
|
|
keys = []
|
|
for key, hist in self.db.iterator(prefix=DB_PREFIXES.UNDO_PREFIX.value):
|
|
height, = unpack('>I', key[-4:])
|
|
if height >= min_height:
|
|
break
|
|
keys.append(key)
|
|
if min_height > 0:
|
|
for key in self.db.iterator(start=DB_PREFIXES.undo_claimtrie.value,
|
|
stop=DB_PREFIXES.undo_claimtrie.value + util.pack_be_uint64(min_height),
|
|
include_value=False):
|
|
keys.append(key)
|
|
if keys:
|
|
with self.db.write_batch() as batch:
|
|
for key in keys:
|
|
batch.delete(key)
|
|
self.logger.info(f'deleted {len(keys):,d} stale undo entries')
|
|
|
|
# delete old block files
|
|
prefix = self.raw_block_prefix()
|
|
paths = [path for path in glob(f'{prefix}[0-9]*')
|
|
if len(path) > len(prefix)
|
|
and int(path[len(prefix):]) < min_height]
|
|
if paths:
|
|
for path in paths:
|
|
try:
|
|
os.remove(path)
|
|
except FileNotFoundError:
|
|
pass
|
|
self.logger.info(f'deleted {len(paths):,d} stale block files')
|
|
|
|
# Read TX counts (requires meta directory)
|
|
await self._read_tx_counts()
|
|
if self.total_transactions is None:
|
|
await self._read_txids()
|
|
await self._read_headers()
|
|
|
|
# start search index
|
|
await self.search_index.start()
|
|
|
|
def close(self):
|
|
self.db.close()
|
|
self.executor.shutdown(wait=True)
|
|
self.executor = None
|
|
|
|
# Header merkle cache
|
|
|
|
async def populate_header_merkle_cache(self):
|
|
self.logger.info('populating header merkle cache...')
|
|
length = max(1, self.db_height - self.env.reorg_limit)
|
|
start = time.time()
|
|
await self.header_mc.initialize(length)
|
|
elapsed = time.time() - start
|
|
self.logger.info(f'header merkle cache populated in {elapsed:.1f}s')
|
|
|
|
async def header_branch_and_root(self, length, height):
|
|
return await self.header_mc.branch_and_root(length, height)
|
|
|
|
# Flushing
|
|
def assert_flushed(self, flush_data):
|
|
"""Asserts state is fully flushed."""
|
|
assert flush_data.tx_count == self.fs_tx_count == self.db_tx_count
|
|
assert flush_data.height == self.fs_height == self.db_height
|
|
assert flush_data.tip == self.db_tip
|
|
assert not flush_data.headers
|
|
assert not flush_data.block_txs
|
|
assert not flush_data.adds
|
|
assert not flush_data.deletes
|
|
assert not flush_data.undo_infos
|
|
assert not self.hist_unflushed
|
|
|
|
def flush_dbs(self, flush_data: FlushData):
|
|
"""Flush out cached state. History is always flushed; UTXOs are
|
|
flushed if flush_utxos."""
|
|
|
|
if flush_data.height == self.db_height:
|
|
self.assert_flushed(flush_data)
|
|
return
|
|
|
|
# start_time = time.time()
|
|
prior_flush = self.last_flush
|
|
tx_delta = flush_data.tx_count - self.last_flush_tx_count
|
|
|
|
# Flush to file system
|
|
# self.flush_fs(flush_data)
|
|
prior_tx_count = (self.tx_counts[self.fs_height]
|
|
if self.fs_height >= 0 else 0)
|
|
|
|
assert len(flush_data.block_txs) == len(flush_data.headers)
|
|
assert flush_data.height == self.fs_height + len(flush_data.headers)
|
|
assert flush_data.tx_count == (self.tx_counts[-1] if self.tx_counts
|
|
else 0)
|
|
assert len(self.tx_counts) == flush_data.height + 1
|
|
assert len(
|
|
b''.join(hashes for hashes, _ in flush_data.block_txs)
|
|
) // 32 == flush_data.tx_count - prior_tx_count, f"{len(b''.join(hashes for hashes, _ in flush_data.block_txs)) // 32} != {flush_data.tx_count}"
|
|
|
|
# Write the headers
|
|
# start_time = time.perf_counter()
|
|
|
|
with self.db.write_batch() as batch:
|
|
self.put = batch.put
|
|
batch_put = self.put
|
|
batch_delete = batch.delete
|
|
height_start = self.fs_height + 1
|
|
tx_num = prior_tx_count
|
|
for i, (header, block_hash, (tx_hashes, txs)) in enumerate(
|
|
zip(flush_data.headers, flush_data.block_hashes, flush_data.block_txs)):
|
|
batch_put(DB_PREFIXES.HEADER_PREFIX.value + util.pack_be_uint64(height_start), header)
|
|
self.headers.append(header)
|
|
tx_count = self.tx_counts[height_start]
|
|
batch_put(DB_PREFIXES.BLOCK_HASH_PREFIX.value + util.pack_be_uint64(height_start), block_hash[::-1])
|
|
batch_put(DB_PREFIXES.TX_COUNT_PREFIX.value + util.pack_be_uint64(height_start), util.pack_be_uint64(tx_count))
|
|
height_start += 1
|
|
offset = 0
|
|
while offset < len(tx_hashes):
|
|
batch_put(DB_PREFIXES.TX_HASH_PREFIX.value + util.pack_be_uint64(tx_num), tx_hashes[offset:offset + 32])
|
|
batch_put(DB_PREFIXES.TX_NUM_PREFIX.value + tx_hashes[offset:offset + 32], util.pack_be_uint64(tx_num))
|
|
batch_put(DB_PREFIXES.TX_PREFIX.value + tx_hashes[offset:offset + 32], txs[offset // 32])
|
|
tx_num += 1
|
|
offset += 32
|
|
flush_data.headers.clear()
|
|
flush_data.block_txs.clear()
|
|
flush_data.block_hashes.clear()
|
|
op_count = len(flush_data.claimtrie_stash)
|
|
for staged_change in flush_data.claimtrie_stash:
|
|
# print("ADVANCE", staged_change)
|
|
if staged_change.is_put:
|
|
batch_put(staged_change.key, staged_change.value)
|
|
else:
|
|
batch_delete(staged_change.key)
|
|
flush_data.claimtrie_stash.clear()
|
|
|
|
for undo_ops, height in flush_data.undo:
|
|
batch_put(DB_PREFIXES.undo_claimtrie.value + util.pack_be_uint64(height), undo_ops)
|
|
flush_data.undo.clear()
|
|
|
|
self.fs_height = flush_data.height
|
|
self.fs_tx_count = flush_data.tx_count
|
|
|
|
# Then history
|
|
self.hist_flush_count += 1
|
|
flush_id = util.pack_be_uint32(self.hist_flush_count)
|
|
unflushed = self.hist_unflushed
|
|
|
|
for hashX in sorted(unflushed):
|
|
key = hashX + flush_id
|
|
batch_put(DB_PREFIXES.HASHX_HISTORY_PREFIX.value + key, unflushed[hashX].tobytes())
|
|
|
|
unflushed.clear()
|
|
self.hist_unflushed_count = 0
|
|
|
|
#########################
|
|
|
|
# New undo information
|
|
for undo_info, height in flush_data.undo_infos:
|
|
batch_put(self.undo_key(height), b''.join(undo_info))
|
|
flush_data.undo_infos.clear()
|
|
|
|
# Spends
|
|
for key in sorted(flush_data.deletes):
|
|
batch_delete(key)
|
|
flush_data.deletes.clear()
|
|
|
|
# New UTXOs
|
|
for key, value in flush_data.adds.items():
|
|
# suffix = tx_idx + tx_num
|
|
hashX = value[:-12]
|
|
suffix = key[-2:] + value[-12:-8]
|
|
batch_put(DB_PREFIXES.HASHX_UTXO_PREFIX.value + key[:4] + suffix, hashX)
|
|
batch_put(DB_PREFIXES.UTXO_PREFIX.value + hashX + suffix, value[-8:])
|
|
flush_data.adds.clear()
|
|
|
|
self.utxo_flush_count = self.hist_flush_count
|
|
self.db_height = flush_data.height
|
|
self.db_tx_count = flush_data.tx_count
|
|
self.db_tip = flush_data.tip
|
|
|
|
now = time.time()
|
|
self.wall_time += now - self.last_flush
|
|
self.last_flush = now
|
|
self.last_flush_tx_count = self.fs_tx_count
|
|
|
|
self.write_db_state(batch)
|
|
|
|
def flush_backup(self, flush_data, touched):
|
|
"""Like flush_dbs() but when backing up. All UTXOs are flushed."""
|
|
assert not flush_data.headers
|
|
assert not flush_data.block_txs
|
|
assert flush_data.height < self.db_height
|
|
assert not self.hist_unflushed
|
|
|
|
start_time = time.time()
|
|
tx_delta = flush_data.tx_count - self.last_flush_tx_count
|
|
###
|
|
self.fs_tx_count = flush_data.tx_count
|
|
# Truncate header_mc: header count is 1 more than the height.
|
|
self.header_mc.truncate(flush_data.height + 1)
|
|
###
|
|
# Not certain this is needed, but it doesn't hurt
|
|
self.hist_flush_count += 1
|
|
nremoves = 0
|
|
|
|
with self.db.write_batch() as batch:
|
|
batch_put = batch.put
|
|
batch_delete = batch.delete
|
|
|
|
claim_reorg_height = self.fs_height
|
|
# print("flush undos", flush_data.undo_claimtrie)
|
|
for (packed_ops, height) in reversed(flush_data.undo):
|
|
undo_ops = RevertableOp.unpack_stack(packed_ops)
|
|
for op in reversed(undo_ops):
|
|
# print("REWIND", op)
|
|
if op.is_put:
|
|
batch_put(op.key, op.value)
|
|
else:
|
|
batch_delete(op.key)
|
|
batch_delete(DB_PREFIXES.undo_claimtrie.value + util.pack_be_uint64(claim_reorg_height))
|
|
claim_reorg_height -= 1
|
|
|
|
flush_data.undo.clear()
|
|
flush_data.claimtrie_stash.clear()
|
|
|
|
while self.fs_height > flush_data.height:
|
|
self.fs_height -= 1
|
|
self.headers.pop()
|
|
tx_count = flush_data.tx_count
|
|
for hashX in sorted(touched):
|
|
deletes = []
|
|
puts = {}
|
|
for key, hist in self.db.iterator(prefix=DB_PREFIXES.HASHX_HISTORY_PREFIX.value + hashX, reverse=True):
|
|
k = key[1:]
|
|
a = array.array('I')
|
|
a.frombytes(hist)
|
|
# Remove all history entries >= tx_count
|
|
idx = bisect_left(a, tx_count)
|
|
nremoves += len(a) - idx
|
|
if idx > 0:
|
|
puts[k] = a[:idx].tobytes()
|
|
break
|
|
deletes.append(k)
|
|
|
|
for key in deletes:
|
|
batch_delete(key)
|
|
for key, value in puts.items():
|
|
batch_put(key, value)
|
|
|
|
# New undo information
|
|
for undo_info, height in flush_data.undo:
|
|
batch.put(self.undo_key(height), b''.join(undo_info))
|
|
flush_data.undo.clear()
|
|
|
|
# Spends
|
|
for key in sorted(flush_data.deletes):
|
|
batch_delete(key)
|
|
flush_data.deletes.clear()
|
|
|
|
# New UTXOs
|
|
for key, value in flush_data.adds.items():
|
|
# suffix = tx_idx + tx_num
|
|
hashX = value[:-12]
|
|
suffix = key[-2:] + value[-12:-8]
|
|
batch_put(DB_PREFIXES.HASHX_UTXO_PREFIX.value + key[:4] + suffix, hashX)
|
|
batch_put(DB_PREFIXES.UTXO_PREFIX.value + hashX + suffix, value[-8:])
|
|
flush_data.adds.clear()
|
|
|
|
start_time = time.time()
|
|
add_count = len(flush_data.adds)
|
|
spend_count = len(flush_data.deletes) // 2
|
|
|
|
if self.db.for_sync:
|
|
block_count = flush_data.height - self.db_height
|
|
tx_count = flush_data.tx_count - self.db_tx_count
|
|
elapsed = time.time() - start_time
|
|
self.logger.info(f'flushed {block_count:,d} blocks with '
|
|
f'{tx_count:,d} txs, {add_count:,d} UTXO adds, '
|
|
f'{spend_count:,d} spends in '
|
|
f'{elapsed:.1f}s, committing...')
|
|
|
|
self.utxo_flush_count = self.hist_flush_count
|
|
self.db_height = flush_data.height
|
|
self.db_tx_count = flush_data.tx_count
|
|
self.db_tip = flush_data.tip
|
|
|
|
# Flush state last as it reads the wall time.
|
|
now = time.time()
|
|
self.wall_time += now - self.last_flush
|
|
self.last_flush = now
|
|
self.last_flush_tx_count = self.fs_tx_count
|
|
self.write_db_state(batch)
|
|
|
|
self.logger.info(f'backing up removed {nremoves:,d} history entries')
|
|
elapsed = self.last_flush - start_time
|
|
self.logger.info(f'backup flush #{self.hist_flush_count:,d} took {elapsed:.1f}s. '
|
|
f'Height {flush_data.height:,d} txs: {flush_data.tx_count:,d} ({tx_delta:+,d})')
|
|
|
|
def raw_header(self, height):
|
|
"""Return the binary header at the given height."""
|
|
header, n = self.read_headers(height, 1)
|
|
if n != 1:
|
|
raise IndexError(f'height {height:,d} out of range')
|
|
return header
|
|
|
|
def encode_headers(self, start_height, count, headers):
|
|
key = (start_height, count)
|
|
if not self.encoded_headers.get(key):
|
|
compressobj = zlib.compressobj(wbits=-15, level=1, memLevel=9)
|
|
headers = base64.b64encode(compressobj.compress(headers) + compressobj.flush()).decode()
|
|
if start_height % 1000 != 0:
|
|
return headers
|
|
self.encoded_headers[key] = headers
|
|
return self.encoded_headers.get(key)
|
|
|
|
def read_headers(self, start_height, count) -> typing.Tuple[bytes, int]:
|
|
"""Requires start_height >= 0, count >= 0. Reads as many headers as
|
|
are available starting at start_height up to count. This
|
|
would be zero if start_height is beyond self.db_height, for
|
|
example.
|
|
|
|
Returns a (binary, n) pair where binary is the concatenated
|
|
binary headers, and n is the count of headers returned.
|
|
"""
|
|
|
|
if start_height < 0 or count < 0:
|
|
raise DBError(f'{count:,d} headers starting at {start_height:,d} not on disk')
|
|
|
|
disk_count = max(0, min(count, self.db_height + 1 - start_height))
|
|
if disk_count:
|
|
return b''.join(self.headers[start_height:start_height + disk_count]), disk_count
|
|
return b'', 0
|
|
|
|
def fs_tx_hash(self, tx_num):
|
|
"""Return a par (tx_hash, tx_height) for the given tx number.
|
|
|
|
If the tx_height is not on disk, returns (None, tx_height)."""
|
|
tx_height = bisect_right(self.tx_counts, tx_num)
|
|
if tx_height > self.db_height:
|
|
return None, tx_height
|
|
try:
|
|
return self.total_transactions[tx_num], tx_height
|
|
except IndexError:
|
|
self.logger.exception(
|
|
"Failed to access a cached transaction, known bug #3142 "
|
|
"should be fixed in #3205"
|
|
)
|
|
return None, tx_height
|
|
|
|
def _fs_transactions(self, txids: Iterable[str]):
|
|
unpack_be_uint64 = util.unpack_be_uint64
|
|
tx_counts = self.tx_counts
|
|
tx_db_get = self.db.get
|
|
tx_cache = self._tx_and_merkle_cache
|
|
tx_infos = {}
|
|
|
|
for tx_hash in txids:
|
|
cached_tx = tx_cache.get(tx_hash)
|
|
if cached_tx:
|
|
tx, merkle = cached_tx
|
|
else:
|
|
tx_hash_bytes = bytes.fromhex(tx_hash)[::-1]
|
|
tx_num = tx_db_get(DB_PREFIXES.TX_NUM_PREFIX.value + tx_hash_bytes)
|
|
tx = None
|
|
tx_height = -1
|
|
if tx_num is not None:
|
|
tx_num = unpack_be_uint64(tx_num)
|
|
tx_height = bisect_right(tx_counts, tx_num)
|
|
if tx_height < self.db_height:
|
|
tx = tx_db_get(DB_PREFIXES.TX_PREFIX.value + tx_hash_bytes)
|
|
if tx_height == -1:
|
|
merkle = {
|
|
'block_height': -1
|
|
}
|
|
else:
|
|
tx_pos = tx_num - tx_counts[tx_height - 1]
|
|
branch, root = self.merkle.branch_and_root(
|
|
self.total_transactions[tx_counts[tx_height - 1]:tx_counts[tx_height]], tx_pos
|
|
)
|
|
merkle = {
|
|
'block_height': tx_height,
|
|
'merkle': [
|
|
hash_to_hex_str(hash)
|
|
for hash in branch
|
|
],
|
|
'pos': tx_pos
|
|
}
|
|
if tx_height + 10 < self.db_height:
|
|
tx_cache[tx_hash] = tx, merkle
|
|
tx_infos[tx_hash] = (None if not tx else tx.hex(), merkle)
|
|
return tx_infos
|
|
|
|
async def fs_transactions(self, txids):
|
|
return await asyncio.get_event_loop().run_in_executor(self.executor, self._fs_transactions, txids)
|
|
|
|
async def fs_block_hashes(self, height, count):
|
|
if height + count > len(self.headers):
|
|
raise DBError(f'only got {len(self.headers) - height:,d} headers starting at {height:,d}, not {count:,d}')
|
|
return [self.coin.header_hash(header) for header in self.headers[height:height + count]]
|
|
|
|
async def limited_history(self, hashX, *, limit=1000):
|
|
"""Return an unpruned, sorted list of (tx_hash, height) tuples of
|
|
confirmed transactions that touched the address, earliest in
|
|
the blockchain first. Includes both spending and receiving
|
|
transactions. By default returns at most 1000 entries. Set
|
|
limit to None to get them all.
|
|
"""
|
|
|
|
def read_history():
|
|
db_height = self.db_height
|
|
tx_counts = self.tx_counts
|
|
|
|
cnt = 0
|
|
txs = []
|
|
|
|
for hist in self.db.iterator(prefix=DB_PREFIXES.HASHX_HISTORY_PREFIX.value + hashX, include_key=False):
|
|
a = array.array('I')
|
|
a.frombytes(hist)
|
|
for tx_num in a:
|
|
tx_height = bisect_right(tx_counts, tx_num)
|
|
if tx_height > db_height:
|
|
return
|
|
txs.append((tx_num, tx_height))
|
|
cnt += 1
|
|
if limit and cnt >= limit:
|
|
break
|
|
if limit and cnt >= limit:
|
|
break
|
|
return txs
|
|
|
|
while True:
|
|
history = await asyncio.get_event_loop().run_in_executor(self.executor, read_history)
|
|
if history is not None:
|
|
return [(self.total_transactions[tx_num], tx_height) for (tx_num, tx_height) in history]
|
|
self.logger.warning(f'limited_history: tx hash '
|
|
f'not found (reorg?), retrying...')
|
|
await sleep(0.25)
|
|
|
|
# -- Undo information
|
|
|
|
def min_undo_height(self, max_height):
|
|
"""Returns a height from which we should store undo info."""
|
|
return max_height - self.env.reorg_limit + 1
|
|
|
|
def undo_key(self, height: int) -> bytes:
|
|
"""DB key for undo information at the given height."""
|
|
return DB_PREFIXES.UNDO_PREFIX.value + pack('>I', height)
|
|
|
|
def read_undo_info(self, height):
|
|
"""Read undo information from a file for the current height."""
|
|
undo_claims = self.db.get(DB_PREFIXES.undo_claimtrie.value + util.pack_be_uint64(self.fs_height))
|
|
return self.db.get(self.undo_key(height)), undo_claims
|
|
|
|
def raw_block_prefix(self):
|
|
return 'block'
|
|
|
|
def raw_block_path(self, height):
|
|
return os.path.join(self.env.db_dir, f'{self.raw_block_prefix()}{height:d}')
|
|
|
|
async def read_raw_block(self, height):
|
|
"""Returns a raw block read from disk. Raises FileNotFoundError
|
|
if the block isn't on-disk."""
|
|
|
|
def read():
|
|
with util.open_file(self.raw_block_path(height)) as f:
|
|
return f.read(-1)
|
|
|
|
return await asyncio.get_event_loop().run_in_executor(self.executor, read)
|
|
|
|
def write_raw_block(self, block, height):
|
|
"""Write a raw block to disk."""
|
|
with util.open_truncate(self.raw_block_path(height)) as f:
|
|
f.write(block)
|
|
# Delete old blocks to prevent them accumulating
|
|
try:
|
|
del_height = self.min_undo_height(height) - 1
|
|
os.remove(self.raw_block_path(del_height))
|
|
except FileNotFoundError:
|
|
pass
|
|
|
|
def clear_excess_undo_info(self):
|
|
"""Clear excess undo info. Only most recent N are kept."""
|
|
min_height = self.min_undo_height(self.db_height)
|
|
keys = []
|
|
for key, hist in self.db.iterator(prefix=DB_PREFIXES.UNDO_PREFIX.value):
|
|
height, = unpack('>I', key[-4:])
|
|
if height >= min_height:
|
|
break
|
|
keys.append(key)
|
|
|
|
if keys:
|
|
with self.db.write_batch() as batch:
|
|
for key in keys:
|
|
batch.delete(key)
|
|
self.logger.info(f'deleted {len(keys):,d} stale undo entries')
|
|
|
|
# delete old block files
|
|
prefix = self.raw_block_prefix()
|
|
paths = [path for path in glob(f'{prefix}[0-9]*')
|
|
if len(path) > len(prefix)
|
|
and int(path[len(prefix):]) < min_height]
|
|
if paths:
|
|
for path in paths:
|
|
try:
|
|
os.remove(path)
|
|
except FileNotFoundError:
|
|
pass
|
|
self.logger.info(f'deleted {len(paths):,d} stale block files')
|
|
|
|
# -- UTXO database
|
|
|
|
def write_db_state(self, batch):
|
|
"""Write (UTXO) state to the batch."""
|
|
batch.put(
|
|
DB_PREFIXES.db_state.value,
|
|
DBState(
|
|
self.genesis_bytes, self.db_height, self.db_tx_count, self.db_tip,
|
|
self.utxo_flush_count, int(self.wall_time), self.first_sync, self.db_version,
|
|
self.hist_flush_count, self.hist_comp_flush_count, self.hist_comp_cursor
|
|
).pack()
|
|
)
|
|
|
|
def read_db_state(self):
|
|
state = self.db.get(DB_PREFIXES.db_state.value)
|
|
if not state:
|
|
self.db_height = -1
|
|
self.db_tx_count = 0
|
|
self.db_tip = b'\0' * 32
|
|
self.db_version = max(self.DB_VERSIONS)
|
|
self.utxo_flush_count = 0
|
|
self.wall_time = 0
|
|
self.first_sync = True
|
|
self.hist_flush_count = 0
|
|
self.hist_comp_flush_count = -1
|
|
self.hist_comp_cursor = -1
|
|
self.hist_db_version = max(self.DB_VERSIONS)
|
|
else:
|
|
state = DBState.unpack(state)
|
|
self.db_version = state.db_version
|
|
if self.db_version not in self.DB_VERSIONS:
|
|
raise DBError(f'your DB version is {self.db_version} but this '
|
|
f'software only handles versions {self.DB_VERSIONS}')
|
|
# backwards compat
|
|
genesis_hash = state.genesis
|
|
if genesis_hash.hex() != self.coin.GENESIS_HASH:
|
|
raise DBError(f'DB genesis hash {genesis_hash} does not '
|
|
f'match coin {self.coin.GENESIS_HASH}')
|
|
self.db_height = state.height
|
|
self.db_tx_count = state.tx_count
|
|
self.db_tip = state.tip
|
|
self.utxo_flush_count = state.utxo_flush_count
|
|
self.wall_time = state.wall_time
|
|
self.first_sync = state.first_sync
|
|
self.hist_flush_count = state.hist_flush_count
|
|
self.hist_comp_flush_count = state.comp_flush_count
|
|
self.hist_comp_cursor = state.comp_cursor
|
|
self.hist_db_version = state.db_version
|
|
|
|
async def all_utxos(self, hashX):
|
|
"""Return all UTXOs for an address sorted in no particular order."""
|
|
def read_utxos():
|
|
utxos = []
|
|
utxos_append = utxos.append
|
|
s_unpack = unpack
|
|
fs_tx_hash = self.fs_tx_hash
|
|
# Key: b'u' + address_hashX + tx_idx + tx_num
|
|
# Value: the UTXO value as a 64-bit unsigned integer
|
|
prefix = DB_PREFIXES.UTXO_PREFIX.value + hashX
|
|
for db_key, db_value in self.db.iterator(prefix=prefix):
|
|
tx_pos, tx_num = s_unpack('<HI', db_key[-6:])
|
|
value, = unpack('<Q', db_value)
|
|
tx_hash, height = fs_tx_hash(tx_num)
|
|
utxos_append(UTXO(tx_num, tx_pos, tx_hash, height, value))
|
|
return utxos
|
|
|
|
while True:
|
|
utxos = await asyncio.get_event_loop().run_in_executor(self.executor, read_utxos)
|
|
if all(utxo.tx_hash is not None for utxo in utxos):
|
|
return utxos
|
|
self.logger.warning(f'all_utxos: tx hash not '
|
|
f'found (reorg?), retrying...')
|
|
await sleep(0.25)
|
|
|
|
async def lookup_utxos(self, prevouts):
|
|
"""For each prevout, lookup it up in the DB and return a (hashX,
|
|
value) pair or None if not found.
|
|
|
|
Used by the mempool code.
|
|
"""
|
|
def lookup_hashXs():
|
|
"""Return (hashX, suffix) pairs, or None if not found,
|
|
for each prevout.
|
|
"""
|
|
def lookup_hashX(tx_hash, tx_idx):
|
|
idx_packed = pack('<H', tx_idx)
|
|
|
|
# Key: b'h' + compressed_tx_hash + tx_idx + tx_num
|
|
# Value: hashX
|
|
prefix = DB_PREFIXES.HASHX_UTXO_PREFIX.value + tx_hash[:4] + idx_packed
|
|
|
|
# Find which entry, if any, the TX_HASH matches.
|
|
for db_key, hashX in self.db.iterator(prefix=prefix):
|
|
tx_num_packed = db_key[-4:]
|
|
tx_num, = unpack('<I', tx_num_packed)
|
|
hash, height = self.fs_tx_hash(tx_num)
|
|
if hash == tx_hash:
|
|
return hashX, idx_packed + tx_num_packed
|
|
return None, None
|
|
return [lookup_hashX(*prevout) for prevout in prevouts]
|
|
|
|
def lookup_utxos(hashX_pairs):
|
|
def lookup_utxo(hashX, suffix):
|
|
if not hashX:
|
|
# This can happen when the daemon is a block ahead
|
|
# of us and has mempool txs spending outputs from
|
|
# that new block
|
|
return None
|
|
# Key: b'u' + address_hashX + tx_idx + tx_num
|
|
# Value: the UTXO value as a 64-bit unsigned integer
|
|
key = DB_PREFIXES.UTXO_PREFIX.value + hashX + suffix
|
|
db_value = self.db.get(key)
|
|
if not db_value:
|
|
# This can happen if the DB was updated between
|
|
# getting the hashXs and getting the UTXOs
|
|
return None
|
|
value, = unpack('<Q', db_value)
|
|
return hashX, value
|
|
return [lookup_utxo(*hashX_pair) for hashX_pair in hashX_pairs]
|
|
|
|
hashX_pairs = await asyncio.get_event_loop().run_in_executor(self.executor, lookup_hashXs)
|
|
return await asyncio.get_event_loop().run_in_executor(self.executor, lookup_utxos, hashX_pairs)
|