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This commit is contained in:
Lex Berezhny 2020-04-11 20:15:04 -04:00
parent 53fc94d688
commit 42224dadb6
7 changed files with 90 additions and 78 deletions
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4
lbry/blockchain/__init__.py
View file

@ -1,2 +1,2 @@
from .sync import BlockSync
from .lbrycrd import Lbrycrd
from .sync import BlockchainSync
from .lbrycrd import Lbrycrd

37
lbry/blockchain/database.py Normal file
View file

@ -0,0 +1,37 @@
import os.path
import sqlite3
from typing import Optional
class BlockchainDB:
__slots__ = 'file_path', 'db'
def __init__(self, directory: str):
self.file_path = f"file:{os.path.join(directory, 'block_index.sqlite')}?mode=ro"
self.db: Optional[sqlite3.Connection] = None
def open(self):
self.db = sqlite3.connect(self.file_path, uri=True, timeout=60.0 * 5)
self.db.row_factory = sqlite3.Row
def execute(self, *args, **kwargs):
if self.db is None:
self.open()
return list(self.db.execute(*args, **kwargs).fetchall())
def get_block_files(self):
return self.execute(
"""
SELECT file as file_number, COUNT(hash) as blocks, SUM(txcount) as txs
FROM block_info GROUP BY file ORDER BY file ASC;
"""
)
def get_file_details(self, block_file):
return self.execute(
"""
SELECT datapos as data_offset, height, hash as block_hash, txCount as txs
FROM block_info WHERE file = ? ORDER BY datapos ASC;
""", (block_file,)
)

36
lbry/blockchain/lbrycrd.py
View file

@ -8,6 +8,7 @@ import tempfile
import urllib.request
from typing import Optional
from binascii import hexlify
from concurrent.futures import ThreadPoolExecutor
import aiohttp
import zmq
@ -15,12 +16,13 @@ import zmq.asyncio
from lbry.wallet.stream import StreamController
from .database import BlockchainDB
log = logging.getLogger(__name__)
download_url = (
# 'https://github.com/lbryio/lbrycrd/releases/download/v0.17.4.2/lbrycrd-linux-1742.zip'
'https://build.lbry.io/lbrycrd/fix_flush_to_not_corrupt/lbrycrd-linux.zip'
DOWNLOAD_URL = (
'https://github.com/lbryio/lbrycrd/releases/download/v0.17.4.4/lbrycrd-linux-1744.zip'
)
@ -81,6 +83,22 @@ class Lbrycrd:
self.on_block = self._on_block_controller.stream
self.on_block.listen(lambda e: log.info('%s %s', hexlify(e['hash']), e['msg']))
self.db = BlockchainDB(self.actual_data_dir)
self.executor = ThreadPoolExecutor(max_workers=1)
def get_block_file_path_from_number(self, block_file_number):
return os.path.join(self.actual_data_dir, 'blocks', f'blk{block_file_number:05}.dat')
async def get_block_files(self):
return await asyncio.get_running_loop().run_in_executor(
self.executor, self.db.get_block_files
)
async def get_file_details(self, block_file):
return await asyncio.get_running_loop().run_in_executor(
self.executor, self.db.get_file_details, block_file
)
@classmethod
def temp_regtest(cls):
return cls(tempfile.mkdtemp(), True)
@ -98,23 +116,23 @@ class Lbrycrd:
async def download(self):
downloaded_file = os.path.join(
self.bin_dir, download_url[download_url.rfind('/')+1:]
self.bin_dir, DOWNLOAD_URL[DOWNLOAD_URL.rfind('/')+1:]
)
if not os.path.exists(self.bin_dir):
os.mkdir(self.bin_dir)
if not os.path.exists(downloaded_file):
log.info('Downloading: %s', download_url)
log.info('Downloading: %s', DOWNLOAD_URL)
async with aiohttp.ClientSession() as session:
async with session.get(download_url) as response:
async with session.get(DOWNLOAD_URL) as response:
with open(downloaded_file, 'wb') as out_file:
while True:
chunk = await response.content.read(4096)
if not chunk:
break
out_file.write(chunk)
with urllib.request.urlopen(download_url) as response:
with urllib.request.urlopen(DOWNLOAD_URL) as response:
with open(downloaded_file, 'wb') as out_file:
shutil.copyfileobj(response, out_file)
@ -133,7 +151,7 @@ class Lbrycrd:
def get_start_command(self, *args):
if self.regtest:
args += '-regtest',
args += ('-regtest',)
return (
self.daemon_bin,
f'-datadir={self.data_dir}',
@ -174,7 +192,7 @@ class Lbrycrd:
if not self.subscribed:
self.subscribed = True
ctx = zmq.asyncio.Context.instance()
sock = ctx.socket(zmq.SUB)
sock = ctx.socket(zmq.SUB) # pylint: disable=no-member
sock.connect(self.subscription_url)
sock.subscribe("hashblock")
self.subscription = asyncio.create_task(self.subscription_handler(sock))

59
lbry/blockchain/sync.py
View file

@ -1,16 +1,14 @@
import os
import asyncio
import logging
import tqdm
from threading import Thread
from multiprocessing import Queue, Event
from concurrent import futures
from typing import Dict, Tuple
from lbry.wallet.stream import StreamController
from lbry.db import Database
from .lbrycrd import Lbrycrd
from .db import AsyncBlockchainDB
from . import worker
@ -31,49 +29,10 @@ class ProgressMonitorThread(Thread):
def run(self):
asyncio.set_event_loop(self.loop)
block_bar = tqdm.tqdm(
desc='total parsing', total=sum(s['total_blocks'] for s in self.state.values()),
unit='blocks', bar_format=self.FORMAT
)
tx_bar = tqdm.tqdm(
desc='total loading', total=sum(s['total_txs'] for s in self.state.values()),
unit='txs', bar_format=self.FORMAT
)
bars: Dict[int, tqdm.tqdm] = {}
while True:
msg = self.queue.get()
if msg == self.STOP:
return
file_num, msg_type, done = msg
bar, state = bars.get(file_num, None), self.state[file_num]
if msg_type == 1:
if bar is None:
bar = bars[file_num] = tqdm.tqdm(
desc=f'├─ blk{file_num:05}.dat parsing', total=state['total_blocks'],
unit='blocks', bar_format=self.FORMAT
)
change = done - state['done_blocks']
state['done_blocks'] = done
bar.update(change)
block_bar.update(change)
if state['total_blocks'] == done:
bar.set_description('✔ '+bar.desc[3:])
bar.close()
bars.pop(file_num)
elif msg_type == 2:
if bar is None:
bar = bars[file_num] = tqdm.tqdm(
desc=f'├─ blk{file_num:05}.dat loading', total=state['total_txs'],
unit='txs', bar_format=self.FORMAT
)
change = done - state['done_txs']
state['done_txs'] = done
bar.update(change)
tx_bar.update(change)
if state['total_txs'] == done:
bar.set_description('✔ '+bar.desc[3:])
bar.close()
bars.pop(file_num)
self.stream_controller.add(msg)
def shutdown(self):
@ -87,25 +46,19 @@ class ProgressMonitorThread(Thread):
self.shutdown()
class BlockSync:
class BlockchainSync:
def __init__(self, chain: Lbrycrd, use_process_pool=False):
def __init__(self, chain: Lbrycrd, db: Database, use_process_pool=False):
self.chain = chain
self.db = db
self.use_process_pool = use_process_pool
self.db = AsyncBlockchainDB.from_path(self.chain.actual_data_dir)
self._on_progress_controller = StreamController()
self.on_progress = self._on_progress_controller.stream
async def start(self):
await self.db.open()
async def stop(self):
await self.db.close()
def get_worker_pool(self, queue, full_stop) -> futures.Executor:
args = dict(
initializer=worker.initializer,
initargs=(self.chain.actual_data_dir, queue, full_stop)
initargs=(self.chain.data_dir, self.chain.regtest, self.db.db_path, queue, full_stop)
)
if not self.use_process_pool:
return futures.ThreadPoolExecutor(max_workers=1, **args)
@ -118,7 +71,7 @@ class BlockSync:
jobs = []
queue, full_stop = Queue(), Event()
executor = self.get_worker_pool(queue, full_stop)
files = list(await self.db.get_block_files_not_synced())
files = list(await self.chain.get_block_files_not_synced())
state = {
file.file_number: {
'status': worker.PENDING,

29
lbry/blockchain/worker.py
View file

@ -5,7 +5,8 @@ from dataclasses import dataclass
from itertools import islice
from lbry.wallet.bcd_data_stream import BCDataStream
from .db import BlockchainDB
from lbry.db import Database
from .lbrycrd import Lbrycrd
from .block import Block
@ -23,7 +24,8 @@ def chunk(rows, step):
@dataclass
class WorkerContext:
db: BlockchainDB
lbrycrd: Lbrycrd
db: Database
progress: Queue
stop: Event
@ -31,9 +33,10 @@ class WorkerContext:
context: ContextVar[Optional[WorkerContext]] = ContextVar('context')
def initializer(data_dir: str, progress: Queue, stop: Event):
def initializer(data_dir: str, regtest: bool, db_path: str, progress: Queue, stop: Event):
context.set(WorkerContext(
db=BlockchainDB(data_dir).open(),
lbrycrd=Lbrycrd(data_dir, regtest),
db=Database(db_path).sync_open(),
progress=progress,
stop=stop
))
@ -41,19 +44,19 @@ def initializer(data_dir: str, progress: Queue, stop: Event):
def process_block_file(block_file_number):
ctx: WorkerContext = context.get()
db, progress, stop = ctx.db, ctx.progress, ctx.stop
block_file_path = db.get_block_file_path_from_number(block_file_number)
lbrycrd, db, progress, stop = ctx.lbrycrd, ctx.db, ctx.progress, ctx.stop
block_file_path = lbrycrd.get_block_file_path_from_number(block_file_number)
num = 0
progress.put_nowait((block_file_number, 1, num))
with open(block_file_path, 'rb') as fp:
stream = BCDataStream(fp=fp)
blocks, txs, claims, supports, spends = [], [], [], [], []
for num, block_info in enumerate(db.get_blocks_not_synced(block_file_number), start=1):
if ctx.stop.is_set():
for num, block_info in enumerate(lbrycrd.db.get_file_details(block_file_number), start=1):
if stop.is_set():
return
if num % 100 == 0:
progress.put_nowait((block_file_number, 1, num))
fp.seek(block_info.data_offset)
fp.seek(block_info['data_offset'])
block = Block(stream)
for tx in block.txs:
txs.append((block.block_hash, tx.position, tx.hash))
@ -76,9 +79,11 @@ def process_block_file(block_file_number):
block.block_hash, tx.hash, tx.position, output.ref.hash, output.claim_hash,
output.claim_name, 2, output.amount, None, None
))
except:
except Exception:
pass
blocks.append((block.block_hash, block.prev_block_hash, block_file_number, 0 if block.is_first_block else None))
blocks.append(
(block.block_hash, block.prev_block_hash, block_file_number, 0 if block.is_first_block else None)
)
progress.put((block_file_number, 1, num))
@ -95,7 +100,7 @@ def process_block_file(block_file_number):
progress.put((block_file_number, 2, done_txs))
for sql, rows in queries:
for chunk_size, chunk_rows in chunk(rows, 10000):
db.execute_many_tx(sql, chunk_rows)
db.sync_executemany(sql, chunk_rows)
done_txs += int(chunk_size/step)
progress.put((block_file_number, 2, done_txs))
progress.put((block_file_number, 2, total_txs))

1
lbry/extras/daemon/daemon.py
View file

@ -18,7 +18,6 @@ from functools import wraps, partial
import ecdsa
import base58
from sqlalchemy import text
from aiohttp import web
from prometheus_client import generate_latest as prom_generate_latest
from google.protobuf.message import DecodeError

2
setup.cfg
View file

@ -15,7 +15,7 @@ ignore=words,server,rpc,schema,winpaths.py,migrator,undecorated.py
max-parents=10
max-args=10
max-line-length=120
good-names=T,t,n,i,j,k,x,y,s,f,d,h,c,e,op,db,tx,io,cachedproperty,log,id,r,iv,ts,l
good-names=T,t,n,i,j,k,x,y,s,f,d,h,c,e,op,db,tx,io,cachedproperty,log,id,r,iv,ts,l,it,fp
valid-metaclass-classmethod-first-arg=mcs
disable=
fixme,