mirror of
https://github.com/LBRYFoundation/LBRY-Vault.git
synced 2025-08-23 09:37:31 +00:00
9e57a59615
Previously if a task running in the main_taskgroup raised, main_taskgroup might have never finished as fx.run (another task running in main_taskgroup) could not be cancelled (it was swallowing the CancelledError). Need to be careful with catching all Exceptions or BaseExceptions, as that might result in a coroutine not being cancellable. Note that from python 3.8 onwards, CancelledError will inherit from BaseException instead of Exception, so catching all Exceptions is somewhat less horrible but this will only really matter if we raise the min py version to 3.8... Really, all "except BaseException" lines are suspect and at least should be considered for replacement with "except Exception". ----- regarding fx.run not being cancellable before, and relevant lines, see:6197cfbb3b/electrum/network.py (L1171)0decdffce2/aiorpcx/curio.py (L242)0decdffce2/aiorpcx/curio.py (L199)0decdffce2/aiorpcx/curio.py (L208)0decdffce2/aiorpcx/curio.py (L218)0decdffce2/aiorpcx/curio.py (L221)6197cfbb3b/electrum/daemon.py (L194)6197cfbb3b/electrum/daemon.py (L203)6197cfbb3b/electrum/exchange_rate.py (L507)6197cfbb3b/electrum/exchange_rate.py (L79)
633 lines
22 KiB
Python
633 lines
22 KiB
Python
import asyncio
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from datetime import datetime
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import inspect
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import sys
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import os
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import json
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import time
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import csv
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import decimal
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from decimal import Decimal
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from typing import Sequence, Optional
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from aiorpcx.curio import timeout_after, TaskTimeout, TaskGroup
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from .bitcoin import COIN
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from .i18n import _
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from .util import (ThreadJob, make_dir, log_exceptions,
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make_aiohttp_session, resource_path)
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from .network import Network
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from .simple_config import SimpleConfig
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from .logging import Logger
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DEFAULT_ENABLED = False
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DEFAULT_CURRENCY = "EUR"
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DEFAULT_EXCHANGE = "CoinGecko" # default exchange should ideally provide historical rates
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# See https://en.wikipedia.org/wiki/ISO_4217
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CCY_PRECISIONS = {'BHD': 3, 'BIF': 0, 'BYR': 0, 'CLF': 4, 'CLP': 0,
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'CVE': 0, 'DJF': 0, 'GNF': 0, 'IQD': 3, 'ISK': 0,
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'JOD': 3, 'JPY': 0, 'KMF': 0, 'KRW': 0, 'KWD': 3,
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'LYD': 3, 'MGA': 1, 'MRO': 1, 'OMR': 3, 'PYG': 0,
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'RWF': 0, 'TND': 3, 'UGX': 0, 'UYI': 0, 'VND': 0,
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'VUV': 0, 'XAF': 0, 'XAU': 4, 'XOF': 0, 'XPF': 0}
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class ExchangeBase(Logger):
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def __init__(self, on_quotes, on_history):
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Logger.__init__(self)
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self.history = {}
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self.quotes = {}
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self.on_quotes = on_quotes
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self.on_history = on_history
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async def get_raw(self, site, get_string):
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# APIs must have https
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url = ''.join(['https://', site, get_string])
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network = Network.get_instance()
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proxy = network.proxy if network else None
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async with make_aiohttp_session(proxy) as session:
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async with session.get(url) as response:
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response.raise_for_status()
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return await response.text()
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async def get_json(self, site, get_string):
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# APIs must have https
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url = ''.join(['https://', site, get_string])
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network = Network.get_instance()
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proxy = network.proxy if network else None
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async with make_aiohttp_session(proxy) as session:
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async with session.get(url) as response:
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response.raise_for_status()
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# set content_type to None to disable checking MIME type
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return await response.json(content_type=None)
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async def get_csv(self, site, get_string):
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raw = await self.get_raw(site, get_string)
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reader = csv.DictReader(raw.split('\n'))
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return list(reader)
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def name(self):
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return self.__class__.__name__
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async def update_safe(self, ccy):
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try:
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self.logger.info(f"getting fx quotes for {ccy}")
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self.quotes = await self.get_rates(ccy)
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self.logger.info("received fx quotes")
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except asyncio.CancelledError:
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# CancelledError must be passed-through for cancellation to work
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raise
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except BaseException as e:
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self.logger.info(f"failed fx quotes: {repr(e)}")
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self.quotes = {}
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self.on_quotes()
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def read_historical_rates(self, ccy, cache_dir) -> Optional[dict]:
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filename = os.path.join(cache_dir, self.name() + '_'+ ccy)
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if not os.path.exists(filename):
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return None
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timestamp = os.stat(filename).st_mtime
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try:
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with open(filename, 'r', encoding='utf-8') as f:
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h = json.loads(f.read())
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except:
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return None
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if not h: # e.g. empty dict
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return None
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h['timestamp'] = timestamp
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self.history[ccy] = h
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self.on_history()
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return h
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@log_exceptions
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async def get_historical_rates_safe(self, ccy, cache_dir):
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try:
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self.logger.info(f"requesting fx history for {ccy}")
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h = await self.request_history(ccy)
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self.logger.info(f"received fx history for {ccy}")
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except BaseException as e:
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self.logger.info(f"failed fx history: {repr(e)}")
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return
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filename = os.path.join(cache_dir, self.name() + '_' + ccy)
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with open(filename, 'w', encoding='utf-8') as f:
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f.write(json.dumps(h))
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h['timestamp'] = time.time()
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self.history[ccy] = h
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self.on_history()
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def get_historical_rates(self, ccy, cache_dir):
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if ccy not in self.history_ccys():
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return
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h = self.history.get(ccy)
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if h is None:
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h = self.read_historical_rates(ccy, cache_dir)
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if h is None or h['timestamp'] < time.time() - 24*3600:
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asyncio.get_event_loop().create_task(self.get_historical_rates_safe(ccy, cache_dir))
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def history_ccys(self):
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return []
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def historical_rate(self, ccy, d_t):
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return self.history.get(ccy, {}).get(d_t.strftime('%Y-%m-%d'), 'NaN')
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async def request_history(self, ccy):
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raise NotImplementedError() # implemented by subclasses
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async def get_rates(self, ccy):
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raise NotImplementedError() # implemented by subclasses
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async def get_currencies(self):
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rates = await self.get_rates('')
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return sorted([str(a) for (a, b) in rates.items() if b is not None and len(a)==3])
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class BitcoinAverage(ExchangeBase):
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# note: historical rates used to be freely available
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# but this is no longer the case. see #5188
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async def get_rates(self, ccy):
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json = await self.get_json('apiv2.bitcoinaverage.com', '/indices/global/ticker/short')
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return dict([(r.replace("BTC", ""), Decimal(json[r]['last']))
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for r in json if r != 'timestamp'])
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class Bitcointoyou(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('bitcointoyou.com', "/API/ticker.aspx")
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return {'BRL': Decimal(json['ticker']['last'])}
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class BitcoinVenezuela(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.bitcoinvenezuela.com', '/')
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rates = [(r, json['BTC'][r]) for r in json['BTC']
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if json['BTC'][r] is not None] # Giving NULL for LTC
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return dict(rates)
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def history_ccys(self):
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return ['ARS', 'EUR', 'USD', 'VEF']
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async def request_history(self, ccy):
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json = await self.get_json('api.bitcoinvenezuela.com',
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"/historical/index.php?coin=BTC")
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return json[ccy +'_BTC']
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class Bitbank(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('public.bitbank.cc', '/btc_jpy/ticker')
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return {'JPY': Decimal(json['data']['last'])}
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class BitFlyer(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('bitflyer.jp', '/api/echo/price')
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return {'JPY': Decimal(json['mid'])}
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class BitPay(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('bitpay.com', '/api/rates')
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return dict([(r['code'], Decimal(r['rate'])) for r in json])
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class Bitso(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.bitso.com', '/v2/ticker')
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return {'MXN': Decimal(json['last'])}
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class BitStamp(ExchangeBase):
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async def get_currencies(self):
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return ['USD', 'EUR']
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async def get_rates(self, ccy):
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if ccy in CURRENCIES[self.name()]:
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json = await self.get_json('www.bitstamp.net', f'/api/v2/ticker/btc{ccy.lower()}/')
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return {ccy: Decimal(json['last'])}
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return {}
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class Bitvalor(ExchangeBase):
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async def get_rates(self,ccy):
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json = await self.get_json('api.bitvalor.com', '/v1/ticker.json')
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return {'BRL': Decimal(json['ticker_1h']['total']['last'])}
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class BlockchainInfo(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('blockchain.info', '/ticker')
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return dict([(r, Decimal(json[r]['15m'])) for r in json])
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class Bylls(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('bylls.com', '/api/price?from_currency=BTC&to_currency=CAD')
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return {'CAD': Decimal(json['public_price']['to_price'])}
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class Coinbase(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.coinbase.com',
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'/v2/exchange-rates?currency=BTC')
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return {ccy: Decimal(rate) for (ccy, rate) in json["data"]["rates"].items()}
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class CoinCap(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.coincap.io', '/v2/rates/bitcoin/')
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return {'USD': Decimal(json['data']['rateUsd'])}
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def history_ccys(self):
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return ['USD']
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async def request_history(self, ccy):
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# Currently 2000 days is the maximum in 1 API call
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# (and history starts on 2017-03-23)
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history = await self.get_json('api.coincap.io',
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'/v2/assets/bitcoin/history?interval=d1&limit=2000')
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return dict([(datetime.utcfromtimestamp(h['time']/1000).strftime('%Y-%m-%d'), h['priceUsd'])
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for h in history['data']])
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class CoinDesk(ExchangeBase):
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async def get_currencies(self):
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dicts = await self.get_json('api.coindesk.com',
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'/v1/bpi/supported-currencies.json')
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return [d['currency'] for d in dicts]
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async def get_rates(self, ccy):
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json = await self.get_json('api.coindesk.com',
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'/v1/bpi/currentprice/%s.json' % ccy)
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result = {ccy: Decimal(json['bpi'][ccy]['rate_float'])}
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return result
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def history_starts(self):
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return { 'USD': '2012-11-30', 'EUR': '2013-09-01' }
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def history_ccys(self):
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return self.history_starts().keys()
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async def request_history(self, ccy):
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start = self.history_starts()[ccy]
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end = datetime.today().strftime('%Y-%m-%d')
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# Note ?currency and ?index don't work as documented. Sigh.
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query = ('/v1/bpi/historical/close.json?start=%s&end=%s'
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% (start, end))
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json = await self.get_json('api.coindesk.com', query)
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return json['bpi']
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class CoinGecko(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.coingecko.com', '/api/v3/exchange_rates')
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return dict([(ccy.upper(), Decimal(d['value']))
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for ccy, d in json['rates'].items()])
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def history_ccys(self):
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# CoinGecko seems to have historical data for all ccys it supports
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return CURRENCIES[self.name()]
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async def request_history(self, ccy):
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history = await self.get_json('api.coingecko.com',
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'/api/v3/coins/bitcoin/market_chart?vs_currency=%s&days=max' % ccy)
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return dict([(datetime.utcfromtimestamp(h[0]/1000).strftime('%Y-%m-%d'), h[1])
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for h in history['prices']])
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class itBit(ExchangeBase):
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async def get_rates(self, ccy):
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ccys = ['USD', 'EUR', 'SGD']
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json = await self.get_json('api.itbit.com', '/v1/markets/XBT%s/ticker' % ccy)
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result = dict.fromkeys(ccys)
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if ccy in ccys:
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result[ccy] = Decimal(json['lastPrice'])
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return result
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class Kraken(ExchangeBase):
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async def get_rates(self, ccy):
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ccys = ['EUR', 'USD', 'CAD', 'GBP', 'JPY']
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pairs = ['XBT%s' % c for c in ccys]
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json = await self.get_json('api.kraken.com',
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'/0/public/Ticker?pair=%s' % ','.join(pairs))
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return dict((k[-3:], Decimal(float(v['c'][0])))
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for k, v in json['result'].items())
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class LocalBitcoins(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('localbitcoins.com',
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'/bitcoinaverage/ticker-all-currencies/')
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return dict([(r, Decimal(json[r]['rates']['last'])) for r in json])
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class MercadoBitcoin(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.bitvalor.com', '/v1/ticker.json')
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return {'BRL': Decimal(json['ticker_1h']['exchanges']['MBT']['last'])}
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class NegocieCoins(ExchangeBase):
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async def get_rates(self,ccy):
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json = await self.get_json('api.bitvalor.com', '/v1/ticker.json')
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return {'BRL': Decimal(json['ticker_1h']['exchanges']['NEG']['last'])}
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class TheRockTrading(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.therocktrading.com',
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'/v1/funds/BTCEUR/ticker')
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return {'EUR': Decimal(json['last'])}
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class Winkdex(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('winkdex.com', '/api/v0/price')
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return {'USD': Decimal(json['price'] / 100.0)}
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def history_ccys(self):
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return ['USD']
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async def request_history(self, ccy):
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json = await self.get_json('winkdex.com',
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"/api/v0/series?start_time=1342915200")
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history = json['series'][0]['results']
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return dict([(h['timestamp'][:10], h['price'] / 100.0)
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for h in history])
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class Zaif(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.zaif.jp', '/api/1/last_price/btc_jpy')
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return {'JPY': Decimal(json['last_price'])}
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def dictinvert(d):
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inv = {}
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for k, vlist in d.items():
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for v in vlist:
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keys = inv.setdefault(v, [])
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keys.append(k)
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return inv
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def get_exchanges_and_currencies():
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# load currencies.json from disk
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path = resource_path('currencies.json')
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try:
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with open(path, 'r', encoding='utf-8') as f:
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return json.loads(f.read())
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except:
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pass
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# or if not present, generate it now.
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print("cannot find currencies.json. will regenerate it now.")
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d = {}
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is_exchange = lambda obj: (inspect.isclass(obj)
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and issubclass(obj, ExchangeBase)
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and obj != ExchangeBase)
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exchanges = dict(inspect.getmembers(sys.modules[__name__], is_exchange))
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async def get_currencies_safe(name, exchange):
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try:
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d[name] = await exchange.get_currencies()
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print(name, "ok")
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except:
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print(name, "error")
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async def query_all_exchanges_for_their_ccys_over_network():
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async with timeout_after(10):
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async with TaskGroup() as group:
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for name, klass in exchanges.items():
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exchange = klass(None, None)
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await group.spawn(get_currencies_safe(name, exchange))
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loop = asyncio.get_event_loop()
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try:
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loop.run_until_complete(query_all_exchanges_for_their_ccys_over_network())
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except Exception as e:
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pass
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with open(path, 'w', encoding='utf-8') as f:
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f.write(json.dumps(d, indent=4, sort_keys=True))
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return d
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CURRENCIES = get_exchanges_and_currencies()
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def get_exchanges_by_ccy(history=True):
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if not history:
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return dictinvert(CURRENCIES)
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d = {}
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exchanges = CURRENCIES.keys()
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for name in exchanges:
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klass = globals()[name]
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exchange = klass(None, None)
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d[name] = exchange.history_ccys()
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return dictinvert(d)
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class FxThread(ThreadJob):
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def __init__(self, config: SimpleConfig, network: Network):
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ThreadJob.__init__(self)
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self.config = config
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self.network = network
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if self.network:
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self.network.register_callback(self.set_proxy, ['proxy_set'])
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self.ccy = self.get_currency()
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self.history_used_spot = False
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self.ccy_combo = None
|
|
self.hist_checkbox = None
|
|
self.cache_dir = os.path.join(config.path, 'cache')
|
|
self._trigger = asyncio.Event()
|
|
self._trigger.set()
|
|
self.set_exchange(self.config_exchange())
|
|
make_dir(self.cache_dir)
|
|
|
|
def set_proxy(self, trigger_name, *args):
|
|
self._trigger.set()
|
|
|
|
@staticmethod
|
|
def get_currencies(history: bool) -> Sequence[str]:
|
|
d = get_exchanges_by_ccy(history)
|
|
return sorted(d.keys())
|
|
|
|
@staticmethod
|
|
def get_exchanges_by_ccy(ccy: str, history: bool) -> Sequence[str]:
|
|
d = get_exchanges_by_ccy(history)
|
|
return d.get(ccy, [])
|
|
|
|
@staticmethod
|
|
def remove_thousands_separator(text):
|
|
return text.replace(',', '') # FIXME use THOUSAND_SEPARATOR in util
|
|
|
|
def ccy_amount_str(self, amount, commas):
|
|
prec = CCY_PRECISIONS.get(self.ccy, 2)
|
|
fmt_str = "{:%s.%df}" % ("," if commas else "", max(0, prec)) # FIXME use util.THOUSAND_SEPARATOR and util.DECIMAL_POINT
|
|
try:
|
|
rounded_amount = round(amount, prec)
|
|
except decimal.InvalidOperation:
|
|
rounded_amount = amount
|
|
return fmt_str.format(rounded_amount)
|
|
|
|
async def run(self):
|
|
while True:
|
|
# approx. every 2.5 minutes, refresh spot price
|
|
try:
|
|
async with timeout_after(150):
|
|
await self._trigger.wait()
|
|
self._trigger.clear()
|
|
# we were manually triggered, so get historical rates
|
|
if self.is_enabled() and self.show_history():
|
|
self.exchange.get_historical_rates(self.ccy, self.cache_dir)
|
|
except TaskTimeout:
|
|
pass
|
|
if self.is_enabled():
|
|
await self.exchange.update_safe(self.ccy)
|
|
|
|
def is_enabled(self):
|
|
return bool(self.config.get('use_exchange_rate', DEFAULT_ENABLED))
|
|
|
|
def set_enabled(self, b):
|
|
self.config.set_key('use_exchange_rate', bool(b))
|
|
self.trigger_update()
|
|
|
|
def get_history_config(self, *, default=False):
|
|
return bool(self.config.get('history_rates', default))
|
|
|
|
def set_history_config(self, b):
|
|
self.config.set_key('history_rates', bool(b))
|
|
|
|
def get_history_capital_gains_config(self):
|
|
return bool(self.config.get('history_rates_capital_gains', False))
|
|
|
|
def set_history_capital_gains_config(self, b):
|
|
self.config.set_key('history_rates_capital_gains', bool(b))
|
|
|
|
def get_fiat_address_config(self):
|
|
return bool(self.config.get('fiat_address'))
|
|
|
|
def set_fiat_address_config(self, b):
|
|
self.config.set_key('fiat_address', bool(b))
|
|
|
|
def get_currency(self):
|
|
'''Use when dynamic fetching is needed'''
|
|
return self.config.get("currency", DEFAULT_CURRENCY)
|
|
|
|
def config_exchange(self):
|
|
return self.config.get('use_exchange', DEFAULT_EXCHANGE)
|
|
|
|
def show_history(self):
|
|
return self.is_enabled() and self.get_history_config() and self.ccy in self.exchange.history_ccys()
|
|
|
|
def set_currency(self, ccy):
|
|
self.ccy = ccy
|
|
self.config.set_key('currency', ccy, True)
|
|
self.trigger_update()
|
|
self.on_quotes()
|
|
|
|
def trigger_update(self):
|
|
if self.network:
|
|
self.network.asyncio_loop.call_soon_threadsafe(self._trigger.set)
|
|
|
|
def set_exchange(self, name):
|
|
class_ = globals().get(name) or globals().get(DEFAULT_EXCHANGE)
|
|
self.logger.info(f"using exchange {name}")
|
|
if self.config_exchange() != name:
|
|
self.config.set_key('use_exchange', name, True)
|
|
assert issubclass(class_, ExchangeBase), f"unexpected type {class_} for {name}"
|
|
self.exchange = class_(self.on_quotes, self.on_history) # type: ExchangeBase
|
|
# A new exchange means new fx quotes, initially empty. Force
|
|
# a quote refresh
|
|
self.trigger_update()
|
|
self.exchange.read_historical_rates(self.ccy, self.cache_dir)
|
|
|
|
def on_quotes(self):
|
|
if self.network:
|
|
self.network.trigger_callback('on_quotes')
|
|
|
|
def on_history(self):
|
|
if self.network:
|
|
self.network.trigger_callback('on_history')
|
|
|
|
def exchange_rate(self) -> Decimal:
|
|
"""Returns the exchange rate as a Decimal"""
|
|
rate = self.exchange.quotes.get(self.ccy)
|
|
if rate is None:
|
|
return Decimal('NaN')
|
|
return Decimal(rate)
|
|
|
|
def format_amount(self, btc_balance):
|
|
rate = self.exchange_rate()
|
|
return '' if rate.is_nan() else "%s" % self.value_str(btc_balance, rate)
|
|
|
|
def format_amount_and_units(self, btc_balance):
|
|
rate = self.exchange_rate()
|
|
return '' if rate.is_nan() else "%s %s" % (self.value_str(btc_balance, rate), self.ccy)
|
|
|
|
def get_fiat_status_text(self, btc_balance, base_unit, decimal_point):
|
|
rate = self.exchange_rate()
|
|
return _(" (No FX rate available)") if rate.is_nan() else " 1 %s~%s %s" % (base_unit,
|
|
self.value_str(COIN / (10**(8 - decimal_point)), rate), self.ccy)
|
|
|
|
def fiat_value(self, satoshis, rate):
|
|
return Decimal('NaN') if satoshis is None else Decimal(satoshis) / COIN * Decimal(rate)
|
|
|
|
def value_str(self, satoshis, rate):
|
|
return self.format_fiat(self.fiat_value(satoshis, rate))
|
|
|
|
def format_fiat(self, value):
|
|
if value.is_nan():
|
|
return _("No data")
|
|
return "%s" % (self.ccy_amount_str(value, True))
|
|
|
|
def history_rate(self, d_t):
|
|
if d_t is None:
|
|
return Decimal('NaN')
|
|
rate = self.exchange.historical_rate(self.ccy, d_t)
|
|
# Frequently there is no rate for today, until tomorrow :)
|
|
# Use spot quotes in that case
|
|
if rate in ('NaN', None) and (datetime.today().date() - d_t.date()).days <= 2:
|
|
rate = self.exchange.quotes.get(self.ccy, 'NaN')
|
|
self.history_used_spot = True
|
|
if rate is None:
|
|
rate = 'NaN'
|
|
return Decimal(rate)
|
|
|
|
def historical_value_str(self, satoshis, d_t):
|
|
return self.format_fiat(self.historical_value(satoshis, d_t))
|
|
|
|
def historical_value(self, satoshis, d_t):
|
|
return self.fiat_value(satoshis, self.history_rate(d_t))
|
|
|
|
def timestamp_rate(self, timestamp):
|
|
from .util import timestamp_to_datetime
|
|
date = timestamp_to_datetime(timestamp)
|
|
return self.history_rate(date)
|
|
|
|
|
|
assert globals().get(DEFAULT_EXCHANGE), f"default exchange {DEFAULT_EXCHANGE} does not exist"
|