forked from LBRYCommunity/lbry-sdk
606 lines
23 KiB
Python
606 lines
23 KiB
Python
from lbrynet.interfaces import IRequestCreator, IQueryHandlerFactory, IQueryHandler, ILBRYWallet
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from lbrynet.core.client.ClientRequest import ClientRequest
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from lbrynet.core.Error import UnknownNameError, InvalidStreamInfoError, RequestCanceledError
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from lbrynet.core.sqlite_helpers import rerun_if_locked
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from bitcoinrpc.authproxy import AuthServiceProxy, JSONRPCException
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from twisted.internet import threads, reactor, defer, task
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from twisted.python.failure import Failure
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from twisted.enterprise import adbapi
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from collections import defaultdict, deque
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from zope.interface import implements
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from decimal import Decimal
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import datetime
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import logging
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import json
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import subprocess
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import socket
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import time
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import os
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log = logging.getLogger(__name__)
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alert = logging.getLogger("lbryalert." + __name__)
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class ReservedPoints(object):
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def __init__(self, identifier, amount):
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self.identifier = identifier
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self.amount = amount
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def _catch_connection_error(f):
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def w(*args):
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try:
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return f(*args)
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except socket.error:
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raise ValueError("Unable to connect to an lbrycrd server. Make sure an lbrycrd server " +
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"is running and that this application can connect to it.")
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return w
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class LBRYcrdWallet(object):
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"""This class implements the LBRYWallet interface for the LBRYcrd payment system"""
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implements(ILBRYWallet)
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def __init__(self, db_dir, rpc_user, rpc_pass, rpc_url, rpc_port, wallet_dir=None, wallet_conf=None,
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lbrycrdd_path=None):
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self.db_dir = db_dir
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self.db = None
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self.rpc_conn_string = "http://%s:%s@%s:%s" % (rpc_user, rpc_pass, rpc_url, str(rpc_port))
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self.next_manage_call = None
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self.wallet_balance = Decimal(0.0)
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self.total_reserved_points = Decimal(0.0)
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self.peer_addresses = {} # {Peer: string}
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self.queued_payments = defaultdict(Decimal) # {address(string): amount(Decimal)}
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self.expected_balances = defaultdict(Decimal) # {address(string): amount(Decimal)}
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self.current_address_given_to_peer = {} # {Peer: address(string)}
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self.expected_balance_at_time = deque() # (Peer, address(string), amount(Decimal), time(datetime), count(int),
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# incremental_amount(float))
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self.max_expected_payment_time = datetime.timedelta(minutes=3)
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self.stopped = True
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self.started_lbrycrdd = False
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self.wallet_dir = wallet_dir
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self.wallet_conf = wallet_conf
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self.lbrycrdd = None
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self.manage_running = False
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self.lbrycrdd_path = lbrycrdd_path
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def start(self):
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def make_connection():
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alert.info("Connecting to lbrycrdd...")
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if self.lbrycrdd_path is not None:
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self._start_daemon()
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self._get_info()
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log.info("Connected!")
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alert.info("Connected to lbrycrdd.")
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def start_manage():
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self.stopped = False
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self.manage()
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return True
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d = self._open_db()
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d.addCallback(lambda _: threads.deferToThread(make_connection))
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d.addCallback(lambda _: start_manage())
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return d
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def stop(self):
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def log_stop_error(err):
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log.error("An error occurred stopping the wallet. %s", err.getTraceback())
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self.stopped = True
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# If self.next_manage_call is None, then manage is currently running or else
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# start has not been called, so set stopped and do nothing else.
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if self.next_manage_call is not None:
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self.next_manage_call.cancel()
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self.next_manage_call = None
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d = self.manage()
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d.addErrback(log_stop_error)
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if self.lbrycrdd_path is not None:
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d.addCallback(lambda _: self._stop_daemon())
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d.addErrback(log_stop_error)
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return d
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def manage(self):
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log.info("Doing manage")
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self.next_manage_call = None
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have_set_manage_running = [False]
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def check_if_manage_running():
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d = defer.Deferred()
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def fire_if_not_running():
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if self.manage_running is False:
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self.manage_running = True
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have_set_manage_running[0] = True
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d.callback(True)
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else:
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task.deferLater(reactor, 1, fire_if_not_running)
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fire_if_not_running()
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return d
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d = check_if_manage_running()
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d.addCallback(lambda _: self._check_expected_balances())
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d.addCallback(lambda _: self._send_payments())
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d.addCallback(lambda _: threads.deferToThread(self._get_wallet_balance))
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def set_wallet_balance(balance):
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self.wallet_balance = balance
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d.addCallback(set_wallet_balance)
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def set_next_manage_call():
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if not self.stopped:
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self.next_manage_call = reactor.callLater(60, self.manage)
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d.addCallback(lambda _: set_next_manage_call())
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def log_error(err):
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log.error("Something went wrong during manage. Error message: %s", err.getErrorMessage())
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return err
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d.addErrback(log_error)
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def set_manage_not_running(arg):
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if have_set_manage_running[0] is True:
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self.manage_running = False
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return arg
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d.addBoth(set_manage_not_running)
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return d
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def get_info_exchanger(self):
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return LBRYcrdAddressRequester(self)
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def get_wallet_info_query_handler_factory(self):
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return LBRYcrdAddressQueryHandlerFactory(self)
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def get_balance(self):
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d = threads.deferToThread(self._get_wallet_balance)
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return d
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def reserve_points(self, identifier, amount):
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"""
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Ensure a certain amount of points are available to be sent as payment, before the service is rendered
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@param identifier: The peer to which the payment will ultimately be sent
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@param amount: The amount of points to reserve
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@return: A ReservedPoints object which is given to send_points once the service has been rendered
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"""
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rounded_amount = Decimal(str(round(amount, 8)))
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#if peer in self.peer_addresses:
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if self.wallet_balance >= self.total_reserved_points + rounded_amount:
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self.total_reserved_points += rounded_amount
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return ReservedPoints(identifier, rounded_amount)
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return None
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def cancel_point_reservation(self, reserved_points):
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"""
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Return all of the points that were reserved previously for some ReservedPoints object
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@param reserved_points: ReservedPoints previously returned by reserve_points
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@return: None
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"""
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self.total_reserved_points -= reserved_points.amount
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def send_points(self, reserved_points, amount):
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"""
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Schedule a payment to be sent to a peer
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@param reserved_points: ReservedPoints object previously returned by reserve_points
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@param amount: amount of points to actually send, must be less than or equal to the
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amount reserved in reserved_points
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@return: Deferred which fires when the payment has been scheduled
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"""
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rounded_amount = Decimal(str(round(amount, 8)))
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peer = reserved_points.identifier
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assert(rounded_amount <= reserved_points.amount)
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assert(peer in self.peer_addresses)
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self.queued_payments[self.peer_addresses[peer]] += rounded_amount
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# make any unused points available
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self.total_reserved_points -= (reserved_points.amount - rounded_amount)
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log.info("ordering that %s points be sent to %s", str(rounded_amount),
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str(self.peer_addresses[peer]))
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peer.update_stats('points_sent', amount)
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return defer.succeed(True)
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def send_points_to_address(self, reserved_points, amount):
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"""
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Schedule a payment to be sent to an address
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@param reserved_points: ReservedPoints object previously returned by reserve_points
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@param amount: amount of points to actually send. must be less than or equal to the
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amount reselved in reserved_points
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@return: Deferred which fires when the payment has been scheduled
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"""
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rounded_amount = Decimal(str(round(amount, 8)))
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address = reserved_points.identifier
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assert(rounded_amount <= reserved_points.amount)
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self.queued_payments[address] += rounded_amount
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self.total_reserved_points -= (reserved_points.amount - rounded_amount)
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log.info("Ordering that %s points be sent to %s", str(rounded_amount),
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str(address))
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return defer.succeed(True)
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def add_expected_payment(self, peer, amount):
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"""Increase the number of points expected to be paid by a peer"""
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rounded_amount = Decimal(str(round(amount, 8)))
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assert(peer in self.current_address_given_to_peer)
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address = self.current_address_given_to_peer[peer]
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log.info("expecting a payment at address %s in the amount of %s", str(address), str(rounded_amount))
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self.expected_balances[address] += rounded_amount
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expected_balance = self.expected_balances[address]
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expected_time = datetime.datetime.now() + self.max_expected_payment_time
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self.expected_balance_at_time.append((peer, address, expected_balance, expected_time, 0, amount))
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peer.update_stats('expected_points', amount)
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def update_peer_address(self, peer, address):
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self.peer_addresses[peer] = address
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def get_new_address_for_peer(self, peer):
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def set_address_for_peer(address):
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self.current_address_given_to_peer[peer] = address
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return address
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d = threads.deferToThread(self._get_new_address)
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d.addCallback(set_address_for_peer)
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return d
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def get_stream_info_for_name(self, name):
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def get_stream_info_from_value(result):
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r_dict = {}
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if 'value' in result:
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value = result['value']
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try:
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value_dict = json.loads(value)
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except ValueError:
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return Failure(InvalidStreamInfoError(name))
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known_fields = ['stream_hash', 'name', 'description', 'key_fee', 'key_fee_address']
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for field in known_fields:
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if field in value_dict:
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r_dict[field] = value_dict[field]
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if 'stream_hash' in r_dict and 'txid' in result:
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d = self._save_name_metadata(name, r_dict['stream_hash'], str(result['txid']))
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else:
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d = defer.succeed(True)
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d.addCallback(lambda _: r_dict)
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return d
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return Failure(UnknownNameError(name))
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d = threads.deferToThread(self._get_value_for_name, name)
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d.addCallback(get_stream_info_from_value)
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return d
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def claim_name(self, name, sd_hash, amount, description=None, key_fee=None,
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key_fee_address=None):
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value = {"stream_hash": sd_hash}
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if description is not None:
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value['description'] = description
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if key_fee is not None:
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value['key_fee'] = key_fee
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if key_fee_address is not None:
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value['key_fee_address'] = key_fee_address
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d = threads.deferToThread(self._claim_name, name, json.dumps(value), amount)
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def _save_metadata(txid):
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d = self._save_name_metadata(name, sd_hash, txid)
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d.addCallback(lambda _: txid)
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return d
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d.addCallback(_save_metadata)
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return d
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def get_name_and_validity_for_sd_hash(self, sd_hash):
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d = self._get_claim_metadata_for_sd_hash(sd_hash)
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d.addCallback(lambda name_txid: self._get_status_of_claim(name_txid[1], name_txid[0], sd_hash) if name_txid is not None else None)
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return d
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def get_available_balance(self):
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return float(self.wallet_balance - self.total_reserved_points)
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def get_new_address(self):
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return threads.deferToThread(self._get_new_address)
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def _get_rpc_conn(self):
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return AuthServiceProxy(self.rpc_conn_string)
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def _start_daemon(self):
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tries = 0
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try:
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rpc_conn = self._get_rpc_conn()
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rpc_conn.getinfo()
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log.info("lbrycrdd was already running when LBRYcrdWallet was started.")
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return
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except (socket.error, JSONRPCException):
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tries += 1
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log.info("lbrcyrdd was not running when LBRYcrdWallet was started. Attempting to start it.")
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try:
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if os.name == "nt":
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si = subprocess.STARTUPINFO
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si.dwFlags = subprocess.STARTF_USESHOWWINDOW
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si.wShowWindow = subprocess.SW_HIDE
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self.lbrycrdd = subprocess.Popen([self.lbrycrdd_path, "-datadir=%s" % self.wallet_dir,
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"-conf=%s" % self.wallet_conf], startupinfo=si)
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else:
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self.lbrycrdd = subprocess.Popen([self.lbrycrdd_path, "-datadir=%s" % self.wallet_dir,
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"-conf=%s" % self.wallet_conf])
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self.started_lbrycrdd = True
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except OSError:
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import traceback
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log.error("Couldn't launch lbrycrdd at path %s: %s", self.lbrycrdd_path, traceback.format_exc())
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raise ValueError("Couldn't launch lbrycrdd. Tried %s" % self.lbrycrdd_path)
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while tries < 6:
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try:
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rpc_conn = self._get_rpc_conn()
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rpc_conn.getinfo()
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break
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except (socket.error, JSONRPCException):
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tries += 1
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log.warning("Failed to connect to lbrycrdd.")
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if tries < 5:
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time.sleep(2 ** tries)
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log.warning("Trying again in %d seconds", 2 ** tries)
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else:
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log.warning("Giving up.")
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else:
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self.lbrycrdd.terminate()
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raise ValueError("Couldn't open lbrycrdd")
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def _stop_daemon(self):
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if self.lbrycrdd is not None and self.started_lbrycrdd is True:
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d = threads.deferToThread(self._rpc_stop)
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return d
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return defer.succeed(True)
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def _check_expected_balances(self):
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now = datetime.datetime.now()
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balances_to_check = []
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try:
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while self.expected_balance_at_time[0][3] < now:
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balances_to_check.append(self.expected_balance_at_time.popleft())
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except IndexError:
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pass
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ds = []
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for balance_to_check in balances_to_check:
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d = threads.deferToThread(self._check_expected_balance, balance_to_check)
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ds.append(d)
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dl = defer.DeferredList(ds)
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def handle_checks(results):
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from future_builtins import zip
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for balance, (success, result) in zip(balances_to_check, results):
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peer = balance[0]
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if success is True:
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if result is False:
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if balance[4] <= 1: # first or second strike, give them another chance
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new_expected_balance = (balance[0],
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balance[1],
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balance[2],
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datetime.datetime.now() + self.max_expected_payment_time,
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balance[4] + 1,
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balance[5])
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self.expected_balance_at_time.append(new_expected_balance)
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peer.update_score(-5.0)
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else:
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peer.update_score(-50.0)
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else:
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if balance[4] == 0:
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peer.update_score(balance[5])
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peer.update_stats('points_received', balance[5])
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else:
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log.warning("Something went wrong checking a balance. Peer: %s, account: %s,"
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"expected balance: %s, expected time: %s, count: %s, error: %s",
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str(balance[0]), str(balance[1]), str(balance[2]), str(balance[3]),
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str(balance[4]), str(result.getErrorMessage()))
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dl.addCallback(handle_checks)
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return dl
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@_catch_connection_error
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def _check_expected_balance(self, expected_balance):
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rpc_conn = self._get_rpc_conn()
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log.info("Checking balance of address %s", str(expected_balance[1]))
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balance = rpc_conn.getreceivedbyaddress(expected_balance[1])
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log.debug("received balance: %s", str(balance))
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log.debug("expected balance: %s", str(expected_balance[2]))
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return balance >= expected_balance[2]
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def _send_payments(self):
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log.info("Trying to send payments, if there are any to be sent")
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def do_send(payments):
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rpc_conn = self._get_rpc_conn()
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rpc_conn.sendmany("", payments)
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payments_to_send = {}
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for address, points in self.queued_payments.items():
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log.info("Should be sending %s points to %s", str(points), str(address))
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payments_to_send[address] = float(points)
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self.total_reserved_points -= points
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self.wallet_balance -= points
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del self.queued_payments[address]
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if payments_to_send:
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log.info("Creating a transaction with outputs %s", str(payments_to_send))
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return threads.deferToThread(do_send, payments_to_send)
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log.info("There were no payments to send")
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return defer.succeed(True)
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@_catch_connection_error
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def _get_info(self):
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rpc_conn = self._get_rpc_conn()
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return rpc_conn.getinfo()
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@_catch_connection_error
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def _get_wallet_balance(self):
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rpc_conn = self._get_rpc_conn()
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return rpc_conn.getbalance("")
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@_catch_connection_error
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def _get_new_address(self):
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rpc_conn = self._get_rpc_conn()
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return rpc_conn.getnewaddress()
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@_catch_connection_error
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def _get_value_for_name(self, name):
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rpc_conn = self._get_rpc_conn()
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return rpc_conn.getvalueforname(name)
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@_catch_connection_error
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def _claim_name(self, name, value, amount):
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rpc_conn = self._get_rpc_conn()
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return str(rpc_conn.claimname(name, value, amount))
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@_catch_connection_error
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def _get_status_of_claim(self, txhash, name, sd_hash):
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rpc_conn = self._get_rpc_conn()
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claims = rpc_conn.getclaimsfortx(txhash)
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for claim in claims:
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if 'in claim trie' in claim:
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if 'name' in claim and str(claim['name']) == name and 'value' in claim:
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try:
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value_dict = json.loads(claim['value'])
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except ValueError:
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return None
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if 'stream_hash' in value_dict and str(value_dict['stream_hash']) == sd_hash:
|
|
if 'is controlling' in claim and claim['is controlling']:
|
|
return name, "valid"
|
|
if claim['in claim trie']:
|
|
return name, "invalid"
|
|
if 'in queue' in claim and claim['in queue']:
|
|
return name, "pending"
|
|
return name, "unconfirmed"
|
|
return None
|
|
|
|
|
|
@_catch_connection_error
|
|
def _rpc_stop(self):
|
|
# check if our lbrycrdd is actually running, or if we connected to one that was already
|
|
# running and ours failed to start
|
|
if self.lbrycrdd.poll() is None:
|
|
rpc_conn = self._get_rpc_conn()
|
|
rpc_conn.stop()
|
|
self.lbrycrdd.wait()
|
|
|
|
def _open_db(self):
|
|
self.db = adbapi.ConnectionPool('sqlite3', os.path.join(self.db_dir, "blockchainname.db"),
|
|
check_same_thread=False)
|
|
return self.db.runQuery("create table if not exists name_metadata (" +
|
|
" name text, " +
|
|
" txid text, " +
|
|
" sd_hash text)")
|
|
|
|
def _save_name_metadata(self, name, sd_hash, txid):
|
|
d = self.db.runQuery("insert into name_metadata values (?, ?, ?)",
|
|
(name, txid, sd_hash))
|
|
return d
|
|
|
|
def _get_claim_metadata_for_sd_hash(self, sd_hash):
|
|
d = self.db.runQuery("select name, txid from name_metadata where sd_hash=?", (sd_hash,))
|
|
d.addCallback(lambda r: r[0] if len(r) else None)
|
|
return d
|
|
|
|
|
|
class LBRYcrdAddressRequester(object):
|
|
implements([IRequestCreator])
|
|
|
|
def __init__(self, wallet):
|
|
self.wallet = wallet
|
|
self._protocols = []
|
|
|
|
######### IRequestCreator #########
|
|
|
|
def send_next_request(self, peer, protocol):
|
|
|
|
if not protocol in self._protocols:
|
|
r = ClientRequest({'lbrycrd_address': True}, 'lbrycrd_address')
|
|
d = protocol.add_request(r)
|
|
d.addCallback(self._handle_address_response, peer, r, protocol)
|
|
d.addErrback(self._request_failed, peer)
|
|
self._protocols.append(protocol)
|
|
return defer.succeed(True)
|
|
else:
|
|
return defer.succeed(False)
|
|
|
|
######### internal calls #########
|
|
|
|
def _handle_address_response(self, response_dict, peer, request, protocol):
|
|
assert request.response_identifier in response_dict, \
|
|
"Expected %s in dict but did not get it" % request.response_identifier
|
|
assert protocol in self._protocols, "Responding protocol is not in our list of protocols"
|
|
address = response_dict[request.response_identifier]
|
|
self.wallet.update_peer_address(peer, address)
|
|
|
|
def _request_failed(self, err, peer):
|
|
if not err.check(RequestCanceledError):
|
|
log.warning("A peer failed to send a valid public key response. Error: %s, peer: %s",
|
|
err.getErrorMessage(), str(peer))
|
|
#return err
|
|
|
|
|
|
class LBRYcrdAddressQueryHandlerFactory(object):
|
|
implements(IQueryHandlerFactory)
|
|
|
|
def __init__(self, wallet):
|
|
self.wallet = wallet
|
|
|
|
######### IQueryHandlerFactory #########
|
|
|
|
def build_query_handler(self):
|
|
q_h = LBRYcrdAddressQueryHandler(self.wallet)
|
|
return q_h
|
|
|
|
def get_primary_query_identifier(self):
|
|
return 'lbrycrd_address'
|
|
|
|
def get_description(self):
|
|
return "LBRYcrd Address - an address for receiving payments via LBRYcrd"
|
|
|
|
|
|
class LBRYcrdAddressQueryHandler(object):
|
|
implements(IQueryHandler)
|
|
|
|
def __init__(self, wallet):
|
|
self.wallet = wallet
|
|
self.query_identifiers = ['lbrycrd_address']
|
|
self.address = None
|
|
self.peer = None
|
|
|
|
######### IQueryHandler #########
|
|
|
|
def register_with_request_handler(self, request_handler, peer):
|
|
self.peer = peer
|
|
request_handler.register_query_handler(self, self.query_identifiers)
|
|
|
|
def handle_queries(self, queries):
|
|
|
|
def create_response(address):
|
|
self.address = address
|
|
fields = {'lbrycrd_address': address}
|
|
return fields
|
|
|
|
if self.query_identifiers[0] in queries:
|
|
d = self.wallet.get_new_address_for_peer(self.peer)
|
|
d.addCallback(create_response)
|
|
return d
|
|
if self.address is None:
|
|
log.warning("Expected a request for an address, but did not receive one")
|
|
return defer.fail(Failure(ValueError("Expected but did not receive an address request")))
|
|
else:
|
|
return defer.succeed({}) |