forked from LBRYCommunity/lbry-sdk
389 lines
13 KiB
Python
389 lines
13 KiB
Python
import os
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import json
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import shutil
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import asyncio
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import zipfile
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import tarfile
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import logging
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import tempfile
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import subprocess
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import importlib
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from binascii import hexlify
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from typing import Type, Optional
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import urllib.request
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import lbry
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from lbry.wallet.server.server import Server
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from lbry.wallet.server.env import Env
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from lbry.wallet import Wallet, Ledger, RegTestLedger, WalletManager, Account, BlockHeightEvent
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log = logging.getLogger(__name__)
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def get_spvserver_from_ledger(ledger_module):
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spvserver_path, regtest_class_name = ledger_module.__spvserver__.rsplit('.', 1)
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spvserver_module = importlib.import_module(spvserver_path)
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return getattr(spvserver_module, regtest_class_name)
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def get_blockchain_node_from_ledger(ledger_module):
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return BlockchainNode(
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ledger_module.__node_url__,
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os.path.join(ledger_module.__node_bin__, ledger_module.__node_daemon__),
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os.path.join(ledger_module.__node_bin__, ledger_module.__node_cli__)
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)
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class Conductor:
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def __init__(self, seed=None):
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self.manager_module = WalletManager
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self.spv_module = get_spvserver_from_ledger(lbry.wallet)
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self.blockchain_node = get_blockchain_node_from_ledger(lbry.wallet)
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self.spv_node = SPVNode(self.spv_module)
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self.wallet_node = WalletNode(
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self.manager_module, RegTestLedger, default_seed=seed
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)
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self.blockchain_started = False
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self.spv_started = False
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self.wallet_started = False
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self.log = log.getChild('conductor')
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async def start_blockchain(self):
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if not self.blockchain_started:
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await self.blockchain_node.start()
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await self.blockchain_node.generate(200)
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self.blockchain_started = True
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async def stop_blockchain(self):
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if self.blockchain_started:
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await self.blockchain_node.stop(cleanup=True)
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self.blockchain_started = False
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async def start_spv(self):
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if not self.spv_started:
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await self.spv_node.start(self.blockchain_node)
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self.spv_started = True
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async def stop_spv(self):
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if self.spv_started:
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await self.spv_node.stop(cleanup=True)
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self.spv_started = False
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async def start_wallet(self):
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if not self.wallet_started:
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await self.wallet_node.start(self.spv_node)
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self.wallet_started = True
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async def stop_wallet(self):
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if self.wallet_started:
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await self.wallet_node.stop(cleanup=True)
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self.wallet_started = False
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async def start(self):
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await self.start_blockchain()
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await self.start_spv()
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await self.start_wallet()
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async def stop(self):
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all_the_stops = [
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self.stop_wallet,
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self.stop_spv,
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self.stop_blockchain
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]
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for stop in all_the_stops:
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try:
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await stop()
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except Exception as e:
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log.exception('Exception raised while stopping services:', exc_info=e)
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class WalletNode:
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def __init__(self, manager_class: Type[WalletManager], ledger_class: Type[Ledger],
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verbose: bool = False, port: int = 5280, default_seed: str = None) -> None:
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self.manager_class = manager_class
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self.ledger_class = ledger_class
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self.verbose = verbose
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self.manager: Optional[WalletManager] = None
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self.ledger: Optional[Ledger] = None
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self.wallet: Optional[Wallet] = None
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self.account: Optional[Account] = None
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self.data_path: Optional[str] = None
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self.port = port
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self.default_seed = default_seed
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async def start(self, spv_node: 'SPVNode', seed=None, connect=True):
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self.data_path = tempfile.mkdtemp()
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wallets_dir = os.path.join(self.data_path, 'wallets')
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os.mkdir(wallets_dir)
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wallet_file_name = os.path.join(wallets_dir, 'my_wallet.json')
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with open(wallet_file_name, 'w') as wallet_file:
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wallet_file.write('{"version": 1, "accounts": []}\n')
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self.manager = self.manager_class.from_config({
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'ledgers': {
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self.ledger_class.get_id(): {
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'api_port': self.port,
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'default_servers': [(spv_node.hostname, spv_node.port)],
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'data_path': self.data_path
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}
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},
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'wallets': [wallet_file_name]
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})
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self.ledger = self.manager.ledgers[self.ledger_class]
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self.wallet = self.manager.default_wallet
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if not self.wallet:
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raise ValueError('Wallet is required.')
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if seed or self.default_seed:
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Account.from_dict(
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self.ledger, self.wallet, {'seed': seed or self.default_seed}
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)
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else:
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self.wallet.generate_account(self.ledger)
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self.account = self.wallet.default_account
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if connect:
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await self.manager.start()
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async def stop(self, cleanup=True):
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try:
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await self.manager.stop()
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finally:
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cleanup and self.cleanup()
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def cleanup(self):
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shutil.rmtree(self.data_path, ignore_errors=True)
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class SPVNode:
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def __init__(self, coin_class, node_number=1):
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self.coin_class = coin_class
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self.controller = None
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self.data_path = None
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self.server = None
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self.hostname = 'localhost'
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self.port = 50001 + node_number # avoid conflict with default daemon
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self.session_timeout = 600
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self.rpc_port = '0' # disabled by default
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async def start(self, blockchain_node: 'BlockchainNode', extraconf=None):
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self.data_path = tempfile.mkdtemp()
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conf = {
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'DESCRIPTION': '',
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'PAYMENT_ADDRESS': '',
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'DAILY_FEE': '0',
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'DB_DIRECTORY': self.data_path,
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'DAEMON_URL': blockchain_node.rpc_url,
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'REORG_LIMIT': '100',
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'HOST': self.hostname,
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'TCP_PORT': str(self.port),
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'SESSION_TIMEOUT': str(self.session_timeout),
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'MAX_QUERY_WORKERS': '0',
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'INDIVIDUAL_TAG_INDEXES': '',
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'RPC_PORT': self.rpc_port
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}
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if extraconf:
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conf.update(extraconf)
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# TODO: don't use os.environ
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os.environ.update(conf)
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self.server = Server(Env(self.coin_class))
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self.server.mempool.refresh_secs = self.server.bp.prefetcher.polling_delay = 0.5
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await self.server.start()
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async def stop(self, cleanup=True):
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try:
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await self.server.stop()
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finally:
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cleanup and self.cleanup()
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def cleanup(self):
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shutil.rmtree(self.data_path, ignore_errors=True)
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class BlockchainProcess(asyncio.SubprocessProtocol):
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IGNORE_OUTPUT = [
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b'keypool keep',
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b'keypool reserve',
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b'keypool return',
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]
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def __init__(self):
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self.ready = asyncio.Event()
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self.stopped = asyncio.Event()
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self.log = log.getChild('blockchain')
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def pipe_data_received(self, fd, data):
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if self.log and not any(ignore in data for ignore in self.IGNORE_OUTPUT):
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if b'Error:' in data:
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self.log.error(data.decode())
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else:
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self.log.info(data.decode())
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if b'Error:' in data:
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self.ready.set()
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raise SystemError(data.decode())
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if b'Done loading' in data:
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self.ready.set()
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def process_exited(self):
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self.stopped.set()
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self.ready.set()
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class BlockchainNode:
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P2SH_SEGWIT_ADDRESS = "p2sh-segwit"
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BECH32_ADDRESS = "bech32"
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def __init__(self, url, daemon, cli):
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self.latest_release_url = url
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self.project_dir = os.path.dirname(os.path.dirname(__file__))
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self.bin_dir = os.path.join(self.project_dir, 'bin')
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self.daemon_bin = os.path.join(self.bin_dir, daemon)
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self.cli_bin = os.path.join(self.bin_dir, cli)
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self.log = log.getChild('blockchain')
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self.data_path = None
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self.protocol = None
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self.transport = None
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self.block_expected = 0
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self.hostname = 'localhost'
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self.peerport = 9246 + 2 # avoid conflict with default peer port
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self.rpcport = 9245 + 2 # avoid conflict with default rpc port
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self.rpcuser = 'rpcuser'
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self.rpcpassword = 'rpcpassword'
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@property
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def rpc_url(self):
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return f'http://{self.rpcuser}:{self.rpcpassword}@{self.hostname}:{self.rpcport}/'
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def is_expected_block(self, e: BlockHeightEvent):
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return self.block_expected == e.height
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@property
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def exists(self):
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return (
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os.path.exists(self.cli_bin) and
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os.path.exists(self.daemon_bin)
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)
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def download(self):
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downloaded_file = os.path.join(
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self.bin_dir,
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self.latest_release_url[self.latest_release_url.rfind('/')+1:]
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)
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if not os.path.exists(self.bin_dir):
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os.mkdir(self.bin_dir)
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if not os.path.exists(downloaded_file):
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self.log.info('Downloading: %s', self.latest_release_url)
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with urllib.request.urlopen(self.latest_release_url) as response:
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with open(downloaded_file, 'wb') as out_file:
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shutil.copyfileobj(response, out_file)
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self.log.info('Extracting: %s', downloaded_file)
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if downloaded_file.endswith('.zip'):
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with zipfile.ZipFile(downloaded_file) as dotzip:
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dotzip.extractall(self.bin_dir)
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# zipfile bug https://bugs.python.org/issue15795
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os.chmod(self.cli_bin, 0o755)
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os.chmod(self.daemon_bin, 0o755)
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elif downloaded_file.endswith('.tar.gz'):
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with tarfile.open(downloaded_file) as tar:
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tar.extractall(self.bin_dir)
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return self.exists
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def ensure(self):
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return self.exists or self.download()
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async def start(self):
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assert self.ensure()
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self.data_path = tempfile.mkdtemp()
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loop = asyncio.get_event_loop()
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asyncio.get_child_watcher().attach_loop(loop)
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command = [
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self.daemon_bin,
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f'-datadir={self.data_path}', '-printtoconsole', '-regtest', '-server', '-txindex',
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f'-rpcuser={self.rpcuser}', f'-rpcpassword={self.rpcpassword}', f'-rpcport={self.rpcport}',
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f'-port={self.peerport}'
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]
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self.log.info(' '.join(command))
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self.transport, self.protocol = await loop.subprocess_exec(
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BlockchainProcess, *command
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)
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await self.protocol.ready.wait()
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assert not self.protocol.stopped.is_set()
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async def stop(self, cleanup=True):
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try:
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self.transport.terminate()
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await self.protocol.stopped.wait()
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self.transport.close()
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finally:
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if cleanup:
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self.cleanup()
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def cleanup(self):
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shutil.rmtree(self.data_path, ignore_errors=True)
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async def _cli_cmnd(self, *args):
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cmnd_args = [
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self.cli_bin, f'-datadir={self.data_path}', '-regtest',
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f'-rpcuser={self.rpcuser}', f'-rpcpassword={self.rpcpassword}', f'-rpcport={self.rpcport}'
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] + list(args)
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self.log.info(' '.join(cmnd_args))
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loop = asyncio.get_event_loop()
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asyncio.get_child_watcher().attach_loop(loop)
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process = await asyncio.create_subprocess_exec(
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*cmnd_args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT
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)
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out, _ = await process.communicate()
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result = out.decode().strip()
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self.log.info(result)
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if result.startswith('error code'):
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raise Exception(result)
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return result
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def generate(self, blocks):
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self.block_expected += blocks
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return self._cli_cmnd('generate', str(blocks))
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def invalidate_block(self, blockhash):
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return self._cli_cmnd('invalidateblock', blockhash)
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def get_block_hash(self, block):
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return self._cli_cmnd('getblockhash', str(block))
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def get_raw_change_address(self):
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return self._cli_cmnd('getrawchangeaddress')
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def get_new_address(self, address_type):
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return self._cli_cmnd('getnewaddress', "", address_type)
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async def get_balance(self):
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return float(await self._cli_cmnd('getbalance'))
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def send_to_address(self, address, amount):
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return self._cli_cmnd('sendtoaddress', address, str(amount))
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def send_raw_transaction(self, tx):
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return self._cli_cmnd('sendrawtransaction', tx.decode())
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def create_raw_transaction(self, inputs, outputs):
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return self._cli_cmnd('createrawtransaction', json.dumps(inputs), json.dumps(outputs))
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async def sign_raw_transaction_with_wallet(self, tx):
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return json.loads(await self._cli_cmnd('signrawtransactionwithwallet', tx))['hex'].encode()
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def decode_raw_transaction(self, tx):
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return self._cli_cmnd('decoderawtransaction', hexlify(tx.raw).decode())
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def get_raw_transaction(self, txid):
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return self._cli_cmnd('getrawtransaction', txid, '1')
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