1302 lines
58 KiB
Python
1302 lines
58 KiB
Python
# Copyright (c) 2016, Neil Booth
|
|
# Copyright (c) 2017, the ElectrumX authors
|
|
#
|
|
# All rights reserved.
|
|
#
|
|
# See the file "LICENCE" for information about the copyright
|
|
# and warranty status of this software.
|
|
|
|
"""Interface to the blockchain database."""
|
|
|
|
import os
|
|
import asyncio
|
|
import array
|
|
import time
|
|
import typing
|
|
import struct
|
|
import attr
|
|
import zlib
|
|
import base64
|
|
import plyvel
|
|
from typing import Optional, Iterable, Tuple, DefaultDict, Set, Dict, List, TYPE_CHECKING
|
|
from functools import partial
|
|
from asyncio import sleep
|
|
from bisect import bisect_right
|
|
from collections import defaultdict
|
|
|
|
from lbry.error import ResolveCensoredError
|
|
from lbry.schema.result import Censor
|
|
from lbry.utils import LRUCacheWithMetrics
|
|
from lbry.schema.url import URL, normalize_name
|
|
from lbry.wallet.server import util
|
|
from lbry.wallet.server.hash import hash_to_hex_str
|
|
from lbry.wallet.server.tx import TxInput
|
|
from lbry.wallet.server.merkle import Merkle, MerkleCache
|
|
from lbry.wallet.server.db import DB_PREFIXES
|
|
from lbry.wallet.server.db.common import ResolveResult, STREAM_TYPES, CLAIM_TYPES
|
|
from lbry.wallet.server.db.revertable import RevertableOpStack
|
|
from lbry.wallet.server.db.prefixes import Prefixes, PendingActivationValue, ClaimTakeoverValue, ClaimToTXOValue, PrefixDB
|
|
from lbry.wallet.server.db.prefixes import ACTIVATED_CLAIM_TXO_TYPE, ACTIVATED_SUPPORT_TXO_TYPE
|
|
from lbry.wallet.server.db.prefixes import PendingActivationKey, TXOToClaimValue
|
|
from lbry.wallet.transaction import OutputScript
|
|
from lbry.schema.claim import Claim, guess_stream_type
|
|
from lbry.wallet.ledger import Ledger, RegTestLedger, TestNetLedger
|
|
|
|
from lbry.wallet.server.db.elasticsearch import SearchIndex
|
|
|
|
if TYPE_CHECKING:
|
|
from lbry.wallet.server.db.prefixes import EffectiveAmountKey
|
|
|
|
|
|
class UTXO(typing.NamedTuple):
|
|
tx_num: int
|
|
tx_pos: int
|
|
tx_hash: bytes
|
|
height: int
|
|
value: int
|
|
|
|
|
|
TXO_STRUCT = struct.Struct(b'>LH')
|
|
TXO_STRUCT_unpack = TXO_STRUCT.unpack
|
|
TXO_STRUCT_pack = TXO_STRUCT.pack
|
|
|
|
|
|
@attr.s(slots=True)
|
|
class FlushData:
|
|
height = attr.ib()
|
|
tx_count = attr.ib()
|
|
put_and_delete_ops = attr.ib()
|
|
tip = attr.ib()
|
|
|
|
|
|
OptionalResolveResultOrError = Optional[typing.Union[ResolveResult, ResolveCensoredError, LookupError, ValueError]]
|
|
|
|
DB_STATE_STRUCT = struct.Struct(b'>32sLL32sLLBBlll')
|
|
DB_STATE_STRUCT_SIZE = 94
|
|
|
|
|
|
class DBState(typing.NamedTuple):
|
|
genesis: bytes
|
|
height: int
|
|
tx_count: int
|
|
tip: bytes
|
|
utxo_flush_count: int
|
|
wall_time: int
|
|
first_sync: bool
|
|
db_version: int
|
|
hist_flush_count: int
|
|
comp_flush_count: int
|
|
comp_cursor: int
|
|
|
|
def pack(self) -> bytes:
|
|
return DB_STATE_STRUCT.pack(
|
|
self.genesis, self.height, self.tx_count, self.tip, self.utxo_flush_count,
|
|
self.wall_time, 1 if self.first_sync else 0, self.db_version, self.hist_flush_count,
|
|
self.comp_flush_count, self.comp_cursor
|
|
)
|
|
|
|
@classmethod
|
|
def unpack(cls, packed: bytes) -> 'DBState':
|
|
return cls(*DB_STATE_STRUCT.unpack(packed[:DB_STATE_STRUCT_SIZE]))
|
|
|
|
|
|
class DBError(Exception):
|
|
"""Raised on general DB errors generally indicating corruption."""
|
|
|
|
|
|
class LevelDB:
|
|
DB_VERSIONS = HIST_DB_VERSIONS = [7]
|
|
|
|
def __init__(self, env):
|
|
self.logger = util.class_logger(__name__, self.__class__.__name__)
|
|
self.env = env
|
|
self.coin = env.coin
|
|
|
|
self.logger.info(f'switching current directory to {env.db_dir}')
|
|
|
|
self.db = None
|
|
self.prefix_db = None
|
|
|
|
self.hist_unflushed = defaultdict(partial(array.array, 'I'))
|
|
self.hist_unflushed_count = 0
|
|
self.hist_flush_count = 0
|
|
self.hist_comp_flush_count = -1
|
|
self.hist_comp_cursor = -1
|
|
|
|
# blocking/filtering dicts
|
|
blocking_channels = self.env.default('BLOCKING_CHANNEL_IDS', '').split(' ')
|
|
filtering_channels = self.env.default('FILTERING_CHANNEL_IDS', '').split(' ')
|
|
self.blocked_streams = {}
|
|
self.blocked_channels = {}
|
|
self.blocking_channel_hashes = {
|
|
bytes.fromhex(channel_id)[::-1] for channel_id in blocking_channels if channel_id
|
|
}
|
|
self.filtered_streams = {}
|
|
self.filtered_channels = {}
|
|
self.filtering_channel_hashes = {
|
|
bytes.fromhex(channel_id)[::-1] for channel_id in filtering_channels if channel_id
|
|
}
|
|
|
|
self.tx_counts = None
|
|
self.headers = None
|
|
self.encoded_headers = LRUCacheWithMetrics(1 << 21, metric_name='encoded_headers', namespace='wallet_server')
|
|
self.last_flush = time.time()
|
|
|
|
self.logger.info(f'using {self.env.db_engine} for DB backend')
|
|
|
|
# Header merkle cache
|
|
self.merkle = Merkle()
|
|
self.header_mc = MerkleCache(self.merkle, self.fs_block_hashes)
|
|
|
|
self._tx_and_merkle_cache = LRUCacheWithMetrics(2 ** 17, metric_name='tx_and_merkle', namespace="wallet_server")
|
|
self.total_transactions = None
|
|
self.transaction_num_mapping = {}
|
|
|
|
self.claim_to_txo: Dict[bytes, ClaimToTXOValue] = {}
|
|
self.txo_to_claim: Dict[Tuple[int, int], bytes] = {}
|
|
|
|
# Search index
|
|
self.search_index = SearchIndex(
|
|
self.env.es_index_prefix, self.env.database_query_timeout,
|
|
elastic_host=env.elastic_host, elastic_port=env.elastic_port,
|
|
half_life=self.env.trending_half_life, whale_threshold=self.env.trending_whale_threshold,
|
|
whale_half_life=self.env.trending_whale_half_life
|
|
)
|
|
|
|
self.genesis_bytes = bytes.fromhex(self.coin.GENESIS_HASH)
|
|
|
|
if env.coin.NET == 'mainnet':
|
|
self.ledger = Ledger
|
|
elif env.coin.NET == 'testnet':
|
|
self.ledger = TestNetLedger
|
|
else:
|
|
self.ledger = RegTestLedger
|
|
|
|
def get_claim_from_txo(self, tx_num: int, tx_idx: int) -> Optional[TXOToClaimValue]:
|
|
claim_hash_and_name = self.db.get(Prefixes.txo_to_claim.pack_key(tx_num, tx_idx))
|
|
if not claim_hash_and_name:
|
|
return
|
|
return Prefixes.txo_to_claim.unpack_value(claim_hash_and_name)
|
|
|
|
def get_repost(self, claim_hash) -> Optional[bytes]:
|
|
repost = self.db.get(Prefixes.repost.pack_key(claim_hash))
|
|
if repost:
|
|
return Prefixes.repost.unpack_value(repost).reposted_claim_hash
|
|
return
|
|
|
|
def get_reposted_count(self, claim_hash: bytes) -> int:
|
|
cnt = 0
|
|
for _ in self.db.iterator(prefix=Prefixes.reposted_claim.pack_partial_key(claim_hash)):
|
|
cnt += 1
|
|
return cnt
|
|
|
|
def get_activation(self, tx_num, position, is_support=False) -> int:
|
|
activation = self.db.get(
|
|
Prefixes.activated.pack_key(
|
|
ACTIVATED_SUPPORT_TXO_TYPE if is_support else ACTIVATED_CLAIM_TXO_TYPE, tx_num, position
|
|
)
|
|
)
|
|
if activation:
|
|
return Prefixes.activated.unpack_value(activation).height
|
|
return -1
|
|
|
|
def get_supported_claim_from_txo(self, tx_num: int, position: int) -> typing.Tuple[Optional[bytes], Optional[int]]:
|
|
key = Prefixes.support_to_claim.pack_key(tx_num, position)
|
|
supported_claim_hash = self.db.get(key)
|
|
if supported_claim_hash:
|
|
packed_support_amount = self.db.get(
|
|
Prefixes.claim_to_support.pack_key(supported_claim_hash, tx_num, position)
|
|
)
|
|
if packed_support_amount:
|
|
return supported_claim_hash, Prefixes.claim_to_support.unpack_value(packed_support_amount).amount
|
|
return None, None
|
|
|
|
def get_support_amount(self, claim_hash: bytes):
|
|
total = 0
|
|
for packed in self.db.iterator(prefix=Prefixes.claim_to_support.pack_partial_key(claim_hash), include_key=False):
|
|
total += Prefixes.claim_to_support.unpack_value(packed).amount
|
|
return total
|
|
|
|
def get_supports(self, claim_hash: bytes):
|
|
supports = []
|
|
for k, v in self.db.iterator(prefix=Prefixes.claim_to_support.pack_partial_key(claim_hash)):
|
|
unpacked_k = Prefixes.claim_to_support.unpack_key(k)
|
|
unpacked_v = Prefixes.claim_to_support.unpack_value(v)
|
|
supports.append((unpacked_k.tx_num, unpacked_k.position, unpacked_v.amount))
|
|
return supports
|
|
|
|
def get_short_claim_id_url(self, name: str, normalized_name: str, claim_hash: bytes,
|
|
root_tx_num: int, root_position: int) -> str:
|
|
claim_id = claim_hash.hex()
|
|
for prefix_len in range(10):
|
|
prefix = Prefixes.claim_short_id.pack_partial_key(normalized_name, claim_id[:prefix_len+1])
|
|
for _k in self.db.iterator(prefix=prefix, include_value=False):
|
|
k = Prefixes.claim_short_id.unpack_key(_k)
|
|
if k.root_tx_num == root_tx_num and k.root_position == root_position:
|
|
return f'{name}#{k.partial_claim_id}'
|
|
break
|
|
print(f"{claim_id} has a collision")
|
|
return f'{name}#{claim_id}'
|
|
|
|
def _prepare_resolve_result(self, tx_num: int, position: int, claim_hash: bytes, name: str,
|
|
root_tx_num: int, root_position: int, activation_height: int,
|
|
signature_valid: bool) -> ResolveResult:
|
|
try:
|
|
normalized_name = normalize_name(name)
|
|
except UnicodeDecodeError:
|
|
normalized_name = name
|
|
controlling_claim = self.get_controlling_claim(normalized_name)
|
|
|
|
tx_hash = self.total_transactions[tx_num]
|
|
height = bisect_right(self.tx_counts, tx_num)
|
|
created_height = bisect_right(self.tx_counts, root_tx_num)
|
|
last_take_over_height = controlling_claim.height
|
|
|
|
expiration_height = self.coin.get_expiration_height(height)
|
|
support_amount = self.get_support_amount(claim_hash)
|
|
claim_amount = self.claim_to_txo[claim_hash].amount
|
|
|
|
effective_amount = support_amount + claim_amount
|
|
channel_hash = self.get_channel_for_claim(claim_hash, tx_num, position)
|
|
reposted_claim_hash = self.get_repost(claim_hash)
|
|
short_url = self.get_short_claim_id_url(name, normalized_name, claim_hash, root_tx_num, root_position)
|
|
canonical_url = short_url
|
|
claims_in_channel = self.get_claims_in_channel_count(claim_hash)
|
|
if channel_hash:
|
|
channel_vals = self.claim_to_txo.get(channel_hash)
|
|
if channel_vals:
|
|
channel_short_url = self.get_short_claim_id_url(
|
|
channel_vals.name, channel_vals.normalized_name, channel_hash, channel_vals.root_tx_num,
|
|
channel_vals.root_position
|
|
)
|
|
canonical_url = f'{channel_short_url}/{short_url}'
|
|
return ResolveResult(
|
|
name, normalized_name, claim_hash, tx_num, position, tx_hash, height, claim_amount, short_url=short_url,
|
|
is_controlling=controlling_claim.claim_hash == claim_hash, canonical_url=canonical_url,
|
|
last_takeover_height=last_take_over_height, claims_in_channel=claims_in_channel,
|
|
creation_height=created_height, activation_height=activation_height,
|
|
expiration_height=expiration_height, effective_amount=effective_amount, support_amount=support_amount,
|
|
channel_hash=channel_hash, reposted_claim_hash=reposted_claim_hash,
|
|
reposted=self.get_reposted_count(claim_hash),
|
|
signature_valid=None if not channel_hash else signature_valid
|
|
)
|
|
|
|
def _resolve(self, name: str, claim_id: Optional[str] = None,
|
|
amount_order: Optional[int] = None) -> Optional[ResolveResult]:
|
|
"""
|
|
:param normalized_name: name
|
|
:param claim_id: partial or complete claim id
|
|
:param amount_order: '$<value>' suffix to a url, defaults to 1 (winning) if no claim id modifier is provided
|
|
"""
|
|
try:
|
|
normalized_name = normalize_name(name)
|
|
except UnicodeDecodeError:
|
|
normalized_name = name
|
|
if (not amount_order and not claim_id) or amount_order == 1:
|
|
# winning resolution
|
|
controlling = self.get_controlling_claim(normalized_name)
|
|
if not controlling:
|
|
# print(f"none controlling for lbry://{normalized_name}")
|
|
return
|
|
# print(f"resolved controlling lbry://{normalized_name}#{controlling.claim_hash.hex()}")
|
|
return self._fs_get_claim_by_hash(controlling.claim_hash)
|
|
|
|
amount_order = max(int(amount_order or 1), 1)
|
|
|
|
if claim_id:
|
|
if len(claim_id) == 40: # a full claim id
|
|
claim_txo = self.get_claim_txo(bytes.fromhex(claim_id))
|
|
if not claim_txo or normalized_name != claim_txo.normalized_name:
|
|
return
|
|
return self._prepare_resolve_result(
|
|
claim_txo.tx_num, claim_txo.position, bytes.fromhex(claim_id), claim_txo.name,
|
|
claim_txo.root_tx_num, claim_txo.root_position,
|
|
self.get_activation(claim_txo.tx_num, claim_txo.position), claim_txo.channel_signature_is_valid
|
|
)
|
|
# resolve by partial/complete claim id
|
|
prefix = Prefixes.claim_short_id.pack_partial_key(normalized_name, claim_id[:10])
|
|
for k, v in self.db.iterator(prefix=prefix):
|
|
key = Prefixes.claim_short_id.unpack_key(k)
|
|
claim_txo = Prefixes.claim_short_id.unpack_value(v)
|
|
claim_hash = self.txo_to_claim[(claim_txo.tx_num, claim_txo.position)]
|
|
non_normalized_name = self.claim_to_txo.get(claim_hash).name
|
|
signature_is_valid = self.claim_to_txo.get(claim_hash).channel_signature_is_valid
|
|
return self._prepare_resolve_result(
|
|
claim_txo.tx_num, claim_txo.position, claim_hash, non_normalized_name, key.root_tx_num,
|
|
key.root_position, self.get_activation(claim_txo.tx_num, claim_txo.position),
|
|
signature_is_valid
|
|
)
|
|
return
|
|
|
|
# resolve by amount ordering, 1 indexed
|
|
prefix = Prefixes.effective_amount.pack_partial_key(normalized_name)
|
|
for idx, (k, v) in enumerate(self.db.iterator(prefix=prefix)):
|
|
if amount_order > idx + 1:
|
|
continue
|
|
key = Prefixes.effective_amount.unpack_key(k)
|
|
claim_val = Prefixes.effective_amount.unpack_value(v)
|
|
claim_txo = self.claim_to_txo.get(claim_val.claim_hash)
|
|
activation = self.get_activation(key.tx_num, key.position)
|
|
return self._prepare_resolve_result(
|
|
key.tx_num, key.position, claim_val.claim_hash, key.normalized_name, claim_txo.root_tx_num,
|
|
claim_txo.root_position, activation, claim_txo.channel_signature_is_valid
|
|
)
|
|
return
|
|
|
|
def _resolve_claim_in_channel(self, channel_hash: bytes, normalized_name: str):
|
|
candidates = []
|
|
for k, v in self.db.iterator(prefix=Prefixes.channel_to_claim.pack_partial_key(channel_hash, normalized_name)):
|
|
key = Prefixes.channel_to_claim.unpack_key(k)
|
|
stream = Prefixes.channel_to_claim.unpack_value(v)
|
|
effective_amount = self.get_effective_amount(stream.claim_hash)
|
|
if not candidates or candidates[-1][-1] == effective_amount:
|
|
candidates.append((stream.claim_hash, key.tx_num, key.position, effective_amount))
|
|
else:
|
|
break
|
|
if not candidates:
|
|
return
|
|
return list(sorted(candidates, key=lambda item: item[1]))[0]
|
|
|
|
def _fs_resolve(self, url) -> typing.Tuple[OptionalResolveResultOrError, OptionalResolveResultOrError,
|
|
OptionalResolveResultOrError]:
|
|
try:
|
|
parsed = URL.parse(url)
|
|
except ValueError as e:
|
|
return e, None
|
|
|
|
stream = channel = resolved_channel = resolved_stream = None
|
|
if parsed.has_stream_in_channel:
|
|
channel = parsed.channel
|
|
stream = parsed.stream
|
|
elif parsed.has_channel:
|
|
channel = parsed.channel
|
|
elif parsed.has_stream:
|
|
stream = parsed.stream
|
|
if channel:
|
|
resolved_channel = self._resolve(channel.name, channel.claim_id, channel.amount_order)
|
|
if not resolved_channel:
|
|
return None, LookupError(f'Could not find channel in "{url}".'), None
|
|
if stream:
|
|
if resolved_channel:
|
|
stream_claim = self._resolve_claim_in_channel(resolved_channel.claim_hash, stream.normalized)
|
|
if stream_claim:
|
|
stream_claim_id, stream_tx_num, stream_tx_pos, effective_amount = stream_claim
|
|
resolved_stream = self._fs_get_claim_by_hash(stream_claim_id)
|
|
else:
|
|
resolved_stream = self._resolve(stream.name, stream.claim_id, stream.amount_order)
|
|
if not channel and not resolved_channel and resolved_stream and resolved_stream.channel_hash:
|
|
resolved_channel = self._fs_get_claim_by_hash(resolved_stream.channel_hash)
|
|
if not resolved_stream:
|
|
return LookupError(f'Could not find claim at "{url}".'), None, None
|
|
|
|
repost = None
|
|
if resolved_stream or resolved_channel:
|
|
claim_hash = resolved_stream.claim_hash if resolved_stream else resolved_channel.claim_hash
|
|
claim = resolved_stream if resolved_stream else resolved_channel
|
|
reposted_claim_hash = resolved_stream.reposted_claim_hash if resolved_stream else None
|
|
blocker_hash = self.blocked_streams.get(claim_hash) or self.blocked_streams.get(
|
|
reposted_claim_hash) or self.blocked_channels.get(claim_hash) or self.blocked_channels.get(
|
|
reposted_claim_hash) or self.blocked_channels.get(claim.channel_hash)
|
|
if blocker_hash:
|
|
reason_row = self._fs_get_claim_by_hash(blocker_hash)
|
|
return None, ResolveCensoredError(url, blocker_hash, censor_row=reason_row), None
|
|
if claim.reposted_claim_hash:
|
|
repost = self._fs_get_claim_by_hash(claim.reposted_claim_hash)
|
|
return resolved_stream, resolved_channel, repost
|
|
|
|
async def fs_resolve(self, url) -> typing.Tuple[OptionalResolveResultOrError, OptionalResolveResultOrError,
|
|
OptionalResolveResultOrError]:
|
|
return await asyncio.get_event_loop().run_in_executor(None, self._fs_resolve, url)
|
|
|
|
def _fs_get_claim_by_hash(self, claim_hash):
|
|
claim = self.claim_to_txo.get(claim_hash)
|
|
if claim:
|
|
activation = self.get_activation(claim.tx_num, claim.position)
|
|
return self._prepare_resolve_result(
|
|
claim.tx_num, claim.position, claim_hash, claim.name, claim.root_tx_num, claim.root_position,
|
|
activation, claim.channel_signature_is_valid
|
|
)
|
|
|
|
async def fs_getclaimbyid(self, claim_id):
|
|
return await asyncio.get_event_loop().run_in_executor(
|
|
None, self._fs_get_claim_by_hash, bytes.fromhex(claim_id)
|
|
)
|
|
|
|
def get_claim_txo_amount(self, claim_hash: bytes) -> Optional[int]:
|
|
claim = self.get_claim_txo(claim_hash)
|
|
if claim:
|
|
return claim.amount
|
|
|
|
def get_block_hash(self, height: int) -> Optional[bytes]:
|
|
v = self.db.get(Prefixes.block_hash.pack_key(height))
|
|
if v:
|
|
return Prefixes.block_hash.unpack_value(v).block_hash
|
|
|
|
def get_support_txo_amount(self, claim_hash: bytes, tx_num: int, position: int) -> Optional[int]:
|
|
v = self.prefix_db.claim_to_support.get(claim_hash, tx_num, position)
|
|
return None if not v else v.amount
|
|
|
|
def get_claim_txo(self, claim_hash: bytes) -> Optional[ClaimToTXOValue]:
|
|
assert claim_hash
|
|
return self.prefix_db.claim_to_txo.get(claim_hash)
|
|
|
|
def _get_active_amount(self, claim_hash: bytes, txo_type: int, height: int) -> int:
|
|
return sum(
|
|
v.amount for v in self.prefix_db.active_amount.iterate(
|
|
start=(claim_hash, txo_type, 0), stop=(claim_hash, txo_type, height), include_key=False
|
|
)
|
|
)
|
|
|
|
def get_active_amount_as_of_height(self, claim_hash: bytes, height: int) -> int:
|
|
for v in self.prefix_db.active_amount.iterate(
|
|
start=(claim_hash, ACTIVATED_CLAIM_TXO_TYPE, 0), stop=(claim_hash, ACTIVATED_CLAIM_TXO_TYPE, height),
|
|
include_key=False, reverse=True):
|
|
return v.amount
|
|
return 0
|
|
|
|
def get_effective_amount(self, claim_hash: bytes, support_only=False) -> int:
|
|
support_amount = self._get_active_amount(claim_hash, ACTIVATED_SUPPORT_TXO_TYPE, self.db_height + 1)
|
|
if support_only:
|
|
return support_only
|
|
return support_amount + self._get_active_amount(claim_hash, ACTIVATED_CLAIM_TXO_TYPE, self.db_height + 1)
|
|
|
|
def get_url_effective_amount(self, name: str, claim_hash: bytes) -> Optional['EffectiveAmountKey']:
|
|
for k, v in self.prefix_db.effective_amount.iterate(prefix=(name,)):
|
|
if v.claim_hash == claim_hash:
|
|
return k
|
|
|
|
def get_claims_for_name(self, name):
|
|
claims = []
|
|
prefix = Prefixes.claim_short_id.pack_partial_key(name) + bytes([1])
|
|
for _k, _v in self.db.iterator(prefix=prefix):
|
|
v = Prefixes.claim_short_id.unpack_value(_v)
|
|
claim_hash = self.get_claim_from_txo(v.tx_num, v.position).claim_hash
|
|
if claim_hash not in claims:
|
|
claims.append(claim_hash)
|
|
return claims
|
|
|
|
def get_claims_in_channel_count(self, channel_hash) -> int:
|
|
count = 0
|
|
for _ in self.prefix_db.channel_to_claim.iterate(prefix=(channel_hash,), include_key=False):
|
|
count += 1
|
|
return count
|
|
|
|
def reload_blocking_filtering_streams(self):
|
|
self.blocked_streams, self.blocked_channels = self.get_streams_and_channels_reposted_by_channel_hashes(self.blocking_channel_hashes)
|
|
self.filtered_streams, self.filtered_channels = self.get_streams_and_channels_reposted_by_channel_hashes(self.filtering_channel_hashes)
|
|
|
|
def get_streams_and_channels_reposted_by_channel_hashes(self, reposter_channel_hashes: bytes):
|
|
streams, channels = {}, {}
|
|
for reposter_channel_hash in reposter_channel_hashes:
|
|
reposts = self.get_reposts_in_channel(reposter_channel_hash)
|
|
for repost in reposts:
|
|
txo = self.get_claim_txo(repost)
|
|
if txo.normalized_name.startswith('@'):
|
|
channels[repost] = reposter_channel_hash
|
|
else:
|
|
streams[repost] = reposter_channel_hash
|
|
return streams, channels
|
|
|
|
def get_reposts_in_channel(self, channel_hash):
|
|
reposts = set()
|
|
for value in self.db.iterator(prefix=Prefixes.channel_to_claim.pack_partial_key(channel_hash), include_key=False):
|
|
stream = Prefixes.channel_to_claim.unpack_value(value)
|
|
repost = self.get_repost(stream.claim_hash)
|
|
if repost:
|
|
reposts.add(repost)
|
|
return reposts
|
|
|
|
def get_channel_for_claim(self, claim_hash, tx_num, position) -> Optional[bytes]:
|
|
return self.db.get(Prefixes.claim_to_channel.pack_key(claim_hash, tx_num, position))
|
|
|
|
def get_expired_by_height(self, height: int) -> Dict[bytes, Tuple[int, int, str, TxInput]]:
|
|
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(Prefixes.tx.pack_key(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.normalized_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 = {}
|
|
prefix = Prefixes.claim_short_id.pack_partial_key(name) + int(1).to_bytes(1, byteorder='big')
|
|
for k, v in self.db.iterator(prefix=prefix):
|
|
tx_num, nout = Prefixes.claim_short_id.unpack_value(v)
|
|
txos[self.get_claim_from_txo(tx_num, nout).claim_hash] = tx_num, nout
|
|
return txos
|
|
|
|
def get_claim_metadata(self, tx_hash, nout):
|
|
raw = self.db.get(Prefixes.tx.pack_key(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
|
|
metadata = metadata
|
|
if not metadata.is_stream or not metadata.stream.has_fee:
|
|
fee_amount = 0
|
|
else:
|
|
fee_amount = int(max(metadata.stream.fee.amount or 0, 0) * 1000)
|
|
if fee_amount >= 9223372036854775807:
|
|
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.claim_to_txo.get(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 = False
|
|
reposted_claim_type = None
|
|
reposted_stream_type = None
|
|
reposted_media_type = None
|
|
reposted_fee_amount = None
|
|
reposted_fee_currency = None
|
|
reposted_duration = None
|
|
if reposted_claim:
|
|
reposted_tx_hash = self.total_transactions[reposted_claim.tx_num]
|
|
raw_reposted_claim_tx = self.db.get(Prefixes.tx.pack_key(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:
|
|
if reposted_metadata.is_stream:
|
|
meta = reposted_metadata.stream
|
|
elif reposted_metadata.is_channel:
|
|
meta = reposted_metadata.channel
|
|
elif reposted_metadata.is_collection:
|
|
meta = reposted_metadata.collection
|
|
elif reposted_metadata.is_repost:
|
|
meta = reposted_metadata.repost
|
|
else:
|
|
return
|
|
reposted_tags = [tag for tag in meta.tags]
|
|
reposted_languages = [lang.language or 'none' for lang in meta.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]
|
|
reposted_stream_type = STREAM_TYPES[guess_stream_type(reposted_metadata.stream.source.media_type)] \
|
|
if reposted_metadata.is_stream else 0
|
|
reposted_media_type = reposted_metadata.stream.source.media_type if reposted_metadata.is_stream else 0
|
|
if not reposted_metadata.is_stream or not reposted_metadata.stream.has_fee:
|
|
reposted_fee_amount = 0
|
|
else:
|
|
reposted_fee_amount = int(max(reposted_metadata.stream.fee.amount or 0, 0) * 1000)
|
|
if reposted_fee_amount >= 9223372036854775807:
|
|
return
|
|
reposted_fee_currency = None if not reposted_metadata.is_stream else reposted_metadata.stream.fee.currency
|
|
reposted_duration = None
|
|
if reposted_metadata.is_stream and \
|
|
(reposted_metadata.stream.video.duration or reposted_metadata.stream.audio.duration):
|
|
reposted_duration = reposted_metadata.stream.video.duration or reposted_metadata.stream.audio.duration
|
|
if metadata.is_stream:
|
|
meta = metadata.stream
|
|
elif metadata.is_channel:
|
|
meta = metadata.channel
|
|
elif metadata.is_collection:
|
|
meta = metadata.collection
|
|
elif metadata.is_repost:
|
|
meta = metadata.repost
|
|
else:
|
|
return
|
|
claim_tags = [tag for tag in meta.tags]
|
|
claim_languages = [lang.language or 'none' for lang in meta.languages] or ['none']
|
|
|
|
tags = list(set(claim_tags).union(set(reposted_tags)))
|
|
languages = list(set(claim_languages).union(set(reposted_languages)))
|
|
blocked_hash = self.blocked_streams.get(claim_hash) or self.blocked_streams.get(
|
|
reposted_claim_hash) or self.blocked_channels.get(claim_hash) or self.blocked_channels.get(
|
|
reposted_claim_hash) or self.blocked_channels.get(claim.channel_hash)
|
|
filtered_hash = self.filtered_streams.get(claim_hash) or self.filtered_streams.get(
|
|
reposted_claim_hash) or self.filtered_channels.get(claim_hash) or self.filtered_channels.get(
|
|
reposted_claim_hash) or self.filtered_channels.get(claim.channel_hash)
|
|
value = {
|
|
'claim_id': claim_hash.hex(),
|
|
'claim_name': claim.name,
|
|
'normalized_name': claim.normalized_name,
|
|
'tx_id': claim.tx_hash[::-1].hex(),
|
|
'tx_num': claim.tx_num,
|
|
'tx_nout': claim.position,
|
|
'amount': claim.amount,
|
|
'timestamp': self.estimate_timestamp(claim.height),
|
|
'creation_timestamp': self.estimate_timestamp(claim.creation_height),
|
|
'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': bool(claim.is_controlling),
|
|
'last_take_over_height': claim.last_takeover_height,
|
|
'short_url': claim.short_url,
|
|
'canonical_url': claim.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': reposted_has_source if metadata.is_repost else (
|
|
False if not metadata.is_stream else metadata.stream.has_source),
|
|
'stream_type': STREAM_TYPES[guess_stream_type(metadata.stream.source.media_type)]
|
|
if metadata.is_stream else reposted_stream_type if metadata.is_repost else 0,
|
|
'media_type': metadata.stream.source.media_type
|
|
if metadata.is_stream else reposted_media_type if metadata.is_repost else None,
|
|
'fee_amount': fee_amount if not metadata.is_repost else reposted_fee_amount,
|
|
'fee_currency': metadata.stream.fee.currency
|
|
if metadata.is_stream else reposted_fee_currency if metadata.is_repost else None,
|
|
'repost_count': self.get_reposted_count(claim_hash),
|
|
'reposted_claim_id': None if not reposted_claim_hash else reposted_claim_hash.hex(),
|
|
'reposted_claim_type': reposted_claim_type,
|
|
'reposted_has_source': reposted_has_source,
|
|
'channel_id': None if not metadata.is_signed else metadata.signing_channel_hash[::-1].hex(),
|
|
'public_key_id': None if not metadata.is_channel else
|
|
self.ledger.public_key_to_address(metadata.channel.public_key_bytes),
|
|
'signature': (metadata.signature or b'').hex() or None,
|
|
# 'signature_digest': metadata.signature,
|
|
'is_signature_valid': bool(claim.signature_valid),
|
|
'tags': tags,
|
|
'languages': languages,
|
|
'censor_type': Censor.RESOLVE if blocked_hash else Censor.SEARCH if filtered_hash else Censor.NOT_CENSORED,
|
|
'censoring_channel_id': (blocked_hash or filtered_hash or b'').hex() or None,
|
|
'claims_in_channel': None if not metadata.is_channel else self.get_claims_in_channel_count(claim_hash)
|
|
}
|
|
|
|
if metadata.is_repost and reposted_duration is not None:
|
|
value['duration'] = reposted_duration
|
|
elif 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:
|
|
value['release_time'] = metadata.stream.release_time or value['creation_timestamp']
|
|
elif metadata.is_repost or metadata.is_collection:
|
|
value['release_time'] = value['creation_timestamp']
|
|
return value
|
|
|
|
async def all_claims_producer(self, batch_size=500_000):
|
|
batch = []
|
|
for claim_hash, claim_txo in self.claim_to_txo.items():
|
|
# TODO: fix the couple of claim txos that dont have controlling names
|
|
if not self.db.get(Prefixes.claim_takeover.pack_key(claim_txo.normalized_name)):
|
|
continue
|
|
claim = self._fs_get_claim_by_hash(claim_hash)
|
|
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()
|
|
|
|
async def claims_producer(self, claim_hashes: Set[bytes]):
|
|
batch = []
|
|
results = []
|
|
|
|
loop = asyncio.get_event_loop()
|
|
|
|
def produce_claim(claim_hash):
|
|
if claim_hash not in self.claim_to_txo:
|
|
self.logger.warning("can't sync non existent claim to ES: %s", claim_hash.hex())
|
|
return
|
|
name = self.claim_to_txo[claim_hash].normalized_name
|
|
if not self.prefix_db.claim_takeover.get(name):
|
|
self.logger.warning("can't sync non existent claim to ES: %s", claim_hash.hex())
|
|
return
|
|
claim_txo = self.claim_to_txo.get(claim_hash)
|
|
if not claim_txo:
|
|
return
|
|
activation = self.get_activation(claim_txo.tx_num, claim_txo.position)
|
|
claim = self._prepare_resolve_result(
|
|
claim_txo.tx_num, claim_txo.position, claim_hash, claim_txo.name, claim_txo.root_tx_num,
|
|
claim_txo.root_position, activation, claim_txo.channel_signature_is_valid
|
|
)
|
|
if claim:
|
|
batch.append(claim)
|
|
|
|
def get_metadata(claim):
|
|
meta = self._prepare_claim_metadata(claim.claim_hash, claim)
|
|
if meta:
|
|
results.append(meta)
|
|
|
|
if claim_hashes:
|
|
await asyncio.wait(
|
|
[loop.run_in_executor(None, produce_claim, claim_hash) for claim_hash in claim_hashes]
|
|
)
|
|
batch.sort(key=lambda x: x.tx_hash)
|
|
|
|
if batch:
|
|
await asyncio.wait(
|
|
[loop.run_in_executor(None, get_metadata, claim) for claim in batch]
|
|
)
|
|
for meta in results:
|
|
yield meta
|
|
|
|
batch.clear()
|
|
|
|
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) -> typing.Generator[
|
|
Tuple[PendingActivationValue, PendingActivationKey], None, None]:
|
|
yielded = set()
|
|
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, reverse=True):
|
|
if _v not in yielded:
|
|
yielded.add(_v)
|
|
v = Prefixes.pending_activation.unpack_value(_v)
|
|
k = Prefixes.pending_activation.unpack_key(_k)
|
|
yield v, k
|
|
|
|
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(
|
|
Prefixes.tx_count.unpack_value(packed_tx_count).tx_count
|
|
for packed_tx_count in self.db.iterator(prefix=Prefixes.tx_count.prefix, include_key=False)
|
|
)
|
|
|
|
tx_counts = await asyncio.get_event_loop().run_in_executor(None, 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=Prefixes.tx_hash.prefix, include_key=False))
|
|
|
|
start = time.perf_counter()
|
|
self.logger.info("loading txids")
|
|
txids = await asyncio.get_event_loop().run_in_executor(None, 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_claim_txos(self):
|
|
def read_claim_txos():
|
|
for _k, _v in self.db.iterator(prefix=Prefixes.claim_to_txo.prefix):
|
|
k = Prefixes.claim_to_txo.unpack_key(_k)
|
|
v = Prefixes.claim_to_txo.unpack_value(_v)
|
|
self.claim_to_txo[k.claim_hash] = v
|
|
self.txo_to_claim[(v.tx_num, v.position)] = k.claim_hash
|
|
|
|
self.claim_to_txo.clear()
|
|
self.txo_to_claim.clear()
|
|
start = time.perf_counter()
|
|
self.logger.info("loading claims")
|
|
await asyncio.get_event_loop().run_in_executor(None, read_claim_txos)
|
|
ts = time.perf_counter() - start
|
|
self.logger.info("loaded %i claim txos in %ss", len(self.claim_to_txo), 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=Prefixes.header.prefix, include_key=False)
|
|
]
|
|
|
|
headers = await asyncio.get_event_loop().run_in_executor(None, get_headers)
|
|
assert len(headers) - 1 == self.db_height, f"{len(headers)} vs {self.db_height}"
|
|
self.headers = headers
|
|
|
|
def estimate_timestamp(self, height: int) -> int:
|
|
if height < len(self.headers):
|
|
return struct.unpack('<I', self.headers[height][100:104])[0]
|
|
return int(160.6855883050695 * height)
|
|
|
|
async def open_dbs(self):
|
|
if self.db:
|
|
return
|
|
|
|
path = os.path.join(self.env.db_dir, 'lbry-leveldb')
|
|
is_new = os.path.isdir(path)
|
|
self.db = plyvel.DB(
|
|
path, create_if_missing=True, max_open_files=512,
|
|
lru_cache_size=self.env.cache_MB * 1024 * 1024, write_buffer_size=64 * 1024 * 1024,
|
|
max_file_size=1024 * 1024 * 64, bloom_filter_bits=32
|
|
)
|
|
self.db_op_stack = RevertableOpStack(self.db.get, unsafe_prefixes={DB_PREFIXES.trending_spike.value})
|
|
self.prefix_db = PrefixDB(self.db, self.db_op_stack)
|
|
|
|
if is_new:
|
|
self.logger.info('created new db: %s', f'lbry-leveldb')
|
|
else:
|
|
self.logger.info(f'opened db: %s', f'lbry-leveldb')
|
|
|
|
# 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.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.utxo_flush_count = self.hist_flush_count
|
|
|
|
# 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()
|
|
await self._read_claim_txos()
|
|
|
|
# start search index
|
|
await self.search_index.start()
|
|
|
|
def close(self):
|
|
self.db.close()
|
|
|
|
# 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 len(flush_data.put_and_delete_ops)
|
|
|
|
def flush_dbs(self, flush_data: FlushData):
|
|
if flush_data.height == self.db_height:
|
|
self.assert_flushed(flush_data)
|
|
return
|
|
|
|
min_height = self.min_undo_height(self.db_height)
|
|
delete_undo_keys = []
|
|
if min_height > 0: # delete undos for blocks deep enough they can't be reorged
|
|
delete_undo_keys.extend(
|
|
self.db.iterator(
|
|
start=Prefixes.undo.pack_key(0), stop=Prefixes.undo.pack_key(min_height), include_value=False
|
|
)
|
|
)
|
|
delete_undo_keys.extend(
|
|
self.db.iterator(
|
|
start=Prefixes.touched_or_deleted.pack_key(0),
|
|
stop=Prefixes.touched_or_deleted.pack_key(min_height), include_value=False
|
|
)
|
|
)
|
|
|
|
with self.db.write_batch(transaction=True) as batch:
|
|
batch_put = batch.put
|
|
batch_delete = batch.delete
|
|
|
|
for staged_change in flush_data.put_and_delete_ops:
|
|
if staged_change.is_put:
|
|
batch_put(staged_change.key, staged_change.value)
|
|
else:
|
|
batch_delete(staged_change.key)
|
|
for delete_key in delete_undo_keys:
|
|
batch_delete(delete_key)
|
|
|
|
self.fs_height = flush_data.height
|
|
self.fs_tx_count = flush_data.tx_count
|
|
self.hist_flush_count += 1
|
|
self.hist_unflushed_count = 0
|
|
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
|
|
self.last_flush_tx_count = self.fs_tx_count
|
|
now = time.time()
|
|
self.wall_time += now - self.last_flush
|
|
self.last_flush = now
|
|
self.write_db_state(batch)
|
|
|
|
def flush_backup(self, flush_data):
|
|
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(transaction=True) as batch:
|
|
batch_put = batch.put
|
|
batch_delete = batch.delete
|
|
for op in flush_data.put_and_delete_ops:
|
|
# print("REWIND", op)
|
|
if op.is_put:
|
|
batch_put(op.key, op.value)
|
|
else:
|
|
batch_delete(op.key)
|
|
while self.fs_height > flush_data.height:
|
|
self.fs_height -= 1
|
|
|
|
start_time = time.time()
|
|
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 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]):
|
|
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 = self.transaction_num_mapping.get(tx_hash_bytes)
|
|
tx = None
|
|
tx_height = -1
|
|
if tx_num is not None:
|
|
tx_height = bisect_right(tx_counts, tx_num)
|
|
tx = tx_db_get(Prefixes.tx.pack_key(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(None, 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]]
|
|
|
|
def read_history(self, hashX: bytes, limit: int = 1000) -> List[int]:
|
|
txs = array.array('I')
|
|
for hist in self.db.iterator(prefix=Prefixes.hashX_history.pack_partial_key(hashX), include_key=False):
|
|
a = array.array('I')
|
|
a.frombytes(hist)
|
|
txs.extend(a)
|
|
if len(txs) >= limit:
|
|
break
|
|
return txs.tolist()
|
|
|
|
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.
|
|
"""
|
|
while True:
|
|
history = await asyncio.get_event_loop().run_in_executor(None, self.read_history, hashX, limit)
|
|
if history is not None:
|
|
return [(self.total_transactions[tx_num], bisect_right(self.tx_counts, tx_num)) for tx_num 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 Prefixes.undo.pack_key(height)
|
|
|
|
def read_undo_info(self, height: int):
|
|
return self.db.get(Prefixes.undo.pack_key(height)), self.db.get(Prefixes.touched_or_deleted.pack_key(height))
|
|
|
|
def apply_expiration_extension_fork(self):
|
|
# TODO: this can't be reorged
|
|
deletes = []
|
|
adds = []
|
|
|
|
for k, v in self.db.iterator(prefix=Prefixes.claim_expiration.prefix):
|
|
old_key = Prefixes.claim_expiration.unpack_key(k)
|
|
new_key = Prefixes.claim_expiration.pack_key(
|
|
bisect_right(self.tx_counts, old_key.tx_num) + self.coin.nExtendedClaimExpirationTime,
|
|
old_key.tx_num, old_key.position
|
|
)
|
|
deletes.append(k)
|
|
adds.append((new_key, v))
|
|
with self.db.write_batch(transaction=True) as batch:
|
|
for k in deletes:
|
|
batch.delete(k)
|
|
for k, v in adds:
|
|
batch.put(k, v)
|
|
|
|
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
|
|
fs_tx_hash = self.fs_tx_hash
|
|
for db_key, db_value in self.db.iterator(prefix=Prefixes.utxo.pack_partial_key(hashX)):
|
|
k = Prefixes.utxo.unpack_key(db_key)
|
|
v = Prefixes.utxo.unpack_value(db_value)
|
|
tx_hash, height = fs_tx_hash(k.tx_num)
|
|
utxos_append(UTXO(k.tx_num, k.nout, tx_hash, height, v.amount))
|
|
return utxos
|
|
|
|
while True:
|
|
utxos = await asyncio.get_event_loop().run_in_executor(None, 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):
|
|
def lookup_utxos():
|
|
utxos = []
|
|
utxo_append = utxos.append
|
|
for (tx_hash, nout) in prevouts:
|
|
if tx_hash not in self.transaction_num_mapping:
|
|
continue
|
|
tx_num = self.transaction_num_mapping[tx_hash]
|
|
hashX = self.db.get(Prefixes.hashX_utxo.pack_key(tx_hash[:4], tx_num, nout))
|
|
if not hashX:
|
|
continue
|
|
utxo_value = self.db.get(Prefixes.utxo.pack_key(hashX, tx_num, nout))
|
|
if utxo_value:
|
|
utxo_append((hashX, Prefixes.utxo.unpack_value(utxo_value).amount))
|
|
return utxos
|
|
return await asyncio.get_event_loop().run_in_executor(None, lookup_utxos)
|