mirror of
https://github.com/lnbits/lnbits-legend.git
synced 2024-11-19 09:54:21 +01:00
abstract exchange rates code into a "util".
This commit is contained in:
fiatjaf
parent
5142f1e29f
commit
adc3e62573
@ -1,48 +0,0 @@
|
||||
import trio # type: ignore
|
||||
import httpx
|
||||
|
||||
|
||||
async def get_fiat_rate(currency: str):
|
||||
assert currency == "USD", "Only USD is supported as fiat currency."
|
||||
return await get_usd_rate()
|
||||
|
||||
|
||||
async def get_usd_rate():
|
||||
"""
|
||||
Returns an average satoshi price from multiple sources.
|
||||
"""
|
||||
|
||||
satoshi_prices = [None, None, None]
|
||||
|
||||
async def fetch_price(index, url, getter):
|
||||
try:
|
||||
async with httpx.AsyncClient() as client:
|
||||
r = await client.get(url)
|
||||
r.raise_for_status()
|
||||
satoshi_price = int(100_000_000 / float(getter(r.json())))
|
||||
satoshi_prices[index] = satoshi_price
|
||||
except Exception:
|
||||
pass
|
||||
|
||||
async with trio.open_nursery() as nursery:
|
||||
nursery.start_soon(
|
||||
fetch_price,
|
||||
0,
|
||||
"https://api.kraken.com/0/public/Ticker?pair=XXBTZUSD",
|
||||
lambda d: d["result"]["XXBTCZUSD"]["c"][0],
|
||||
)
|
||||
nursery.start_soon(
|
||||
fetch_price,
|
||||
1,
|
||||
"https://www.bitstamp.net/api/v2/ticker/btcusd",
|
||||
lambda d: d["last"],
|
||||
)
|
||||
nursery.start_soon(
|
||||
fetch_price,
|
||||
2,
|
||||
"https://api.coincap.io/v2/rates/bitcoin",
|
||||
lambda d: d["data"]["rateUsd"],
|
||||
)
|
||||
|
||||
satoshi_prices = [x for x in satoshi_prices if x]
|
||||
return sum(satoshi_prices) / len(satoshi_prices)
|
||||
@ -5,10 +5,10 @@ from quart import jsonify, url_for, request
|
||||
from lnurl import LnurlPayResponse, LnurlPayActionResponse, LnurlErrorResponse # type: ignore
|
||||
|
||||
from lnbits.core.services import create_invoice
|
||||
from lnbits.utils.exchange_rates import get_fiat_rate_satoshis
|
||||
|
||||
from . import lnurlp_ext
|
||||
from .crud import increment_pay_link
|
||||
from .helpers import get_fiat_rate
|
||||
|
||||
|
||||
@lnurlp_ext.route("/api/v1/lnurl/<link_id>", methods=["GET"])
|
||||
@ -17,7 +17,7 @@ async def api_lnurl_response(link_id):
|
||||
if not link:
|
||||
return jsonify({"status": "ERROR", "reason": "LNURL-pay not found."}), HTTPStatus.OK
|
||||
|
||||
rate = await get_fiat_rate(link.currency) if link.currency else 1
|
||||
rate = await get_fiat_rate_satoshis(link.currency) if link.currency else 1
|
||||
resp = LnurlPayResponse(
|
||||
callback=url_for("lnurlp.api_lnurl_callback", link_id=link.id, _external=True),
|
||||
min_sendable=math.ceil(link.min * rate) * 1000,
|
||||
@ -39,7 +39,7 @@ async def api_lnurl_callback(link_id):
|
||||
return jsonify({"status": "ERROR", "reason": "LNURL-pay not found."}), HTTPStatus.OK
|
||||
|
||||
min, max = link.min, link.max
|
||||
rate = await get_fiat_rate(link.currency) if link.currency else 1
|
||||
rate = await get_fiat_rate_satoshis(link.currency) if link.currency else 1
|
||||
if link.currency:
|
||||
# allow some fluctuation (as the fiat price may have changed between the calls)
|
||||
min = rate * 995 * link.min
|
||||
|
||||
@ -4,6 +4,7 @@ from lnurl.exceptions import InvalidUrl as LnurlInvalidUrl # type: ignore
|
||||
|
||||
from lnbits.core.crud import get_user
|
||||
from lnbits.decorators import api_check_wallet_key, api_validate_post_request
|
||||
from lnbits.utils.exchange_rates import get_fiat_rate_satoshis
|
||||
|
||||
from . import lnurlp_ext
|
||||
from .crud import (
|
||||
@ -13,7 +14,6 @@ from .crud import (
|
||||
update_pay_link,
|
||||
delete_pay_link,
|
||||
)
|
||||
from .helpers import get_fiat_rate
|
||||
|
||||
|
||||
@lnurlp_ext.route("/api/v1/links", methods=["GET"])
|
||||
@ -109,7 +109,7 @@ async def api_link_delete(link_id):
|
||||
@lnurlp_ext.route("/api/v1/rate/<currency>", methods=["GET"])
|
||||
async def api_check_fiat_rate(currency):
|
||||
try:
|
||||
rate = await get_fiat_rate(currency)
|
||||
rate = await get_fiat_rate_satoshis(currency)
|
||||
except AssertionError:
|
||||
rate = None
|
||||
|
||||
|
||||
@ -1,57 +1,9 @@
|
||||
import trio # type: ignore
|
||||
import httpx
|
||||
import base64
|
||||
import struct
|
||||
import hmac
|
||||
import time
|
||||
|
||||
|
||||
async def get_fiat_rate(currency: str):
|
||||
assert currency == "USD", "Only USD is supported as fiat currency."
|
||||
return await get_usd_rate()
|
||||
|
||||
|
||||
async def get_usd_rate():
|
||||
"""
|
||||
Returns an average satoshi price from multiple sources.
|
||||
"""
|
||||
|
||||
satoshi_prices = [None, None, None]
|
||||
|
||||
async def fetch_price(index, url, getter):
|
||||
try:
|
||||
async with httpx.AsyncClient() as client:
|
||||
r = await client.get(url)
|
||||
r.raise_for_status()
|
||||
satoshi_price = int(100_000_000 / float(getter(r.json())))
|
||||
satoshi_prices[index] = satoshi_price
|
||||
except Exception:
|
||||
pass
|
||||
|
||||
async with trio.open_nursery() as nursery:
|
||||
nursery.start_soon(
|
||||
fetch_price,
|
||||
0,
|
||||
"https://api.kraken.com/0/public/Ticker?pair=XXBTZUSD",
|
||||
lambda d: d["result"]["XXBTCZUSD"]["c"][0],
|
||||
)
|
||||
nursery.start_soon(
|
||||
fetch_price,
|
||||
1,
|
||||
"https://www.bitstamp.net/api/v2/ticker/btcusd",
|
||||
lambda d: d["last"],
|
||||
)
|
||||
nursery.start_soon(
|
||||
fetch_price,
|
||||
2,
|
||||
"https://api.coincap.io/v2/rates/bitcoin",
|
||||
lambda d: d["data"]["rateUsd"],
|
||||
)
|
||||
|
||||
satoshi_prices = [x for x in satoshi_prices if x]
|
||||
return sum(satoshi_prices) / len(satoshi_prices)
|
||||
|
||||
|
||||
def hotp(key, counter, digits=6, digest="sha1"):
|
||||
key = base64.b32decode(key.upper() + "=" * ((8 - len(key)) % 8))
|
||||
counter = struct.pack(">Q", counter)
|
||||
|
||||
@ -3,10 +3,10 @@ from quart import jsonify, url_for, request
|
||||
from lnurl import LnurlPayResponse, LnurlPayActionResponse, LnurlErrorResponse # type: ignore
|
||||
|
||||
from lnbits.core.services import create_invoice
|
||||
from lnbits.utils.exchange_rates import fiat_amount_as_satoshis
|
||||
|
||||
from . import offlineshop_ext
|
||||
from .crud import get_shop, get_item
|
||||
from .helpers import get_fiat_rate
|
||||
|
||||
|
||||
@offlineshop_ext.route("/lnurl/<item_id>", methods=["GET"])
|
||||
@ -18,8 +18,7 @@ async def lnurl_response(item_id):
|
||||
if not item.enabled:
|
||||
return jsonify({"status": "ERROR", "reason": "Item disabled."})
|
||||
|
||||
rate = await get_fiat_rate(item.unit) if item.unit != "sat" else 1
|
||||
price_msat = int(item.price * rate) * 1000
|
||||
price_msat = (await fiat_amount_as_satoshis(item.price, item.unit) if item.unit != "sat" else item.price) * 1000
|
||||
|
||||
resp = LnurlPayResponse(
|
||||
callback=url_for("offlineshop.lnurl_callback", item_id=item.id, _external=True),
|
||||
@ -41,10 +40,10 @@ async def lnurl_callback(item_id):
|
||||
min = item.price * 1000
|
||||
max = item.price * 1000
|
||||
else:
|
||||
rate = await get_fiat_rate(item.unit)
|
||||
price = await fiat_amount_as_satoshis(item.price, item.unit)
|
||||
# allow some fluctuation (the fiat price may have changed between the calls)
|
||||
min = int(rate * item.price) * 995
|
||||
max = int(rate * item.price) * 1010
|
||||
min = price * 995
|
||||
max = price * 1010
|
||||
|
||||
amount_received = int(request.args.get("amount"))
|
||||
if amount_received < min:
|
||||
|
||||
0
lnbits/utils/__init__.py
Normal file
0
lnbits/utils/__init__.py
Normal file
262
lnbits/utils/exchange_rates.py
Normal file
262
lnbits/utils/exchange_rates.py
Normal file
@ -0,0 +1,262 @@
|
||||
import trio # type: ignore
|
||||
import httpx
|
||||
from typing import Callable, NamedTuple
|
||||
|
||||
currencies = {
|
||||
"AED": "United Arab Emirates Dirham",
|
||||
"AFN": "Afghan Afghani",
|
||||
"ALL": "Albanian Lek",
|
||||
"AMD": "Armenian Dram",
|
||||
"ANG": "Netherlands Antillean Gulden",
|
||||
"AOA": "Angolan Kwanza",
|
||||
"ARS": "Argentine Peso",
|
||||
"AUD": "Australian Dollar",
|
||||
"AWG": "Aruban Florin",
|
||||
"AZN": "Azerbaijani Manat",
|
||||
"BAM": "Bosnia and Herzegovina Convertible Mark",
|
||||
"BBD": "Barbadian Dollar",
|
||||
"BDT": "Bangladeshi Taka",
|
||||
"BGN": "Bulgarian Lev",
|
||||
"BHD": "Bahraini Dinar",
|
||||
"BIF": "Burundian Franc",
|
||||
"BMD": "Bermudian Dollar",
|
||||
"BND": "Brunei Dollar",
|
||||
"BOB": "Bolivian Boliviano",
|
||||
"BRL": "Brazilian Real",
|
||||
"BSD": "Bahamian Dollar",
|
||||
"BTN": "Bhutanese Ngultrum",
|
||||
"BWP": "Botswana Pula",
|
||||
"BYN": "Belarusian Ruble",
|
||||
"BYR": "Belarusian Ruble",
|
||||
"BZD": "Belize Dollar",
|
||||
"CAD": "Canadian Dollar",
|
||||
"CDF": "Congolese Franc",
|
||||
"CHF": "Swiss Franc",
|
||||
"CLF": "Unidad de Fomento",
|
||||
"CLP": "Chilean Peso",
|
||||
"CNH": "Chinese Renminbi Yuan Offshore",
|
||||
"CNY": "Chinese Renminbi Yuan",
|
||||
"COP": "Colombian Peso",
|
||||
"CRC": "Costa Rican Colón",
|
||||
"CUC": "Cuban Convertible Peso",
|
||||
"CVE": "Cape Verdean Escudo",
|
||||
"CZK": "Czech Koruna",
|
||||
"DJF": "Djiboutian Franc",
|
||||
"DKK": "Danish Krone",
|
||||
"DOP": "Dominican Peso",
|
||||
"DZD": "Algerian Dinar",
|
||||
"EGP": "Egyptian Pound",
|
||||
"ERN": "Eritrean Nakfa",
|
||||
"ETB": "Ethiopian Birr",
|
||||
"EUR": "Euro",
|
||||
"FJD": "Fijian Dollar",
|
||||
"FKP": "Falkland Pound",
|
||||
"GBP": "British Pound",
|
||||
"GEL": "Georgian Lari",
|
||||
"GGP": "Guernsey Pound",
|
||||
"GHS": "Ghanaian Cedi",
|
||||
"GIP": "Gibraltar Pound",
|
||||
"GMD": "Gambian Dalasi",
|
||||
"GNF": "Guinean Franc",
|
||||
"GTQ": "Guatemalan Quetzal",
|
||||
"GYD": "Guyanese Dollar",
|
||||
"HKD": "Hong Kong Dollar",
|
||||
"HNL": "Honduran Lempira",
|
||||
"HRK": "Croatian Kuna",
|
||||
"HTG": "Haitian Gourde",
|
||||
"HUF": "Hungarian Forint",
|
||||
"IDR": "Indonesian Rupiah",
|
||||
"ILS": "Israeli New Sheqel",
|
||||
"IMP": "Isle of Man Pound",
|
||||
"INR": "Indian Rupee",
|
||||
"IQD": "Iraqi Dinar",
|
||||
"ISK": "Icelandic Króna",
|
||||
"JEP": "Jersey Pound",
|
||||
"JMD": "Jamaican Dollar",
|
||||
"JOD": "Jordanian Dinar",
|
||||
"JPY": "Japanese Yen",
|
||||
"KES": "Kenyan Shilling",
|
||||
"KGS": "Kyrgyzstani Som",
|
||||
"KHR": "Cambodian Riel",
|
||||
"KMF": "Comorian Franc",
|
||||
"KRW": "South Korean Won",
|
||||
"KWD": "Kuwaiti Dinar",
|
||||
"KYD": "Cayman Islands Dollar",
|
||||
"KZT": "Kazakhstani Tenge",
|
||||
"LAK": "Lao Kip",
|
||||
"LBP": "Lebanese Pound",
|
||||
"LKR": "Sri Lankan Rupee",
|
||||
"LRD": "Liberian Dollar",
|
||||
"LSL": "Lesotho Loti",
|
||||
"LYD": "Libyan Dinar",
|
||||
"MAD": "Moroccan Dirham",
|
||||
"MDL": "Moldovan Leu",
|
||||
"MGA": "Malagasy Ariary",
|
||||
"MKD": "Macedonian Denar",
|
||||
"MMK": "Myanmar Kyat",
|
||||
"MNT": "Mongolian Tögrög",
|
||||
"MOP": "Macanese Pataca",
|
||||
"MRO": "Mauritanian Ouguiya",
|
||||
"MUR": "Mauritian Rupee",
|
||||
"MVR": "Maldivian Rufiyaa",
|
||||
"MWK": "Malawian Kwacha",
|
||||
"MXN": "Mexican Peso",
|
||||
"MYR": "Malaysian Ringgit",
|
||||
"MZN": "Mozambican Metical",
|
||||
"NAD": "Namibian Dollar",
|
||||
"NGN": "Nigerian Naira",
|
||||
"NIO": "Nicaraguan Córdoba",
|
||||
"NOK": "Norwegian Krone",
|
||||
"NPR": "Nepalese Rupee",
|
||||
"NZD": "New Zealand Dollar",
|
||||
"OMR": "Omani Rial",
|
||||
"PAB": "Panamanian Balboa",
|
||||
"PEN": "Peruvian Sol",
|
||||
"PGK": "Papua New Guinean Kina",
|
||||
"PHP": "Philippine Peso",
|
||||
"PKR": "Pakistani Rupee",
|
||||
"PLN": "Polish Złoty",
|
||||
"PYG": "Paraguayan Guaraní",
|
||||
"QAR": "Qatari Riyal",
|
||||
"RON": "Romanian Leu",
|
||||
"RSD": "Serbian Dinar",
|
||||
"RUB": "Russian Ruble",
|
||||
"RWF": "Rwandan Franc",
|
||||
"SAR": "Saudi Riyal",
|
||||
"SBD": "Solomon Islands Dollar",
|
||||
"SCR": "Seychellois Rupee",
|
||||
"SEK": "Swedish Krona",
|
||||
"SGD": "Singapore Dollar",
|
||||
"SHP": "Saint Helenian Pound",
|
||||
"SLL": "Sierra Leonean Leone",
|
||||
"SOS": "Somali Shilling",
|
||||
"SRD": "Surinamese Dollar",
|
||||
"SSP": "South Sudanese Pound",
|
||||
"STD": "São Tomé and Príncipe Dobra",
|
||||
"SVC": "Salvadoran Colón",
|
||||
"SZL": "Swazi Lilangeni",
|
||||
"THB": "Thai Baht",
|
||||
"TJS": "Tajikistani Somoni",
|
||||
"TMT": "Turkmenistani Manat",
|
||||
"TND": "Tunisian Dinar",
|
||||
"TOP": "Tongan Paʻanga",
|
||||
"TRY": "Turkish Lira",
|
||||
"TTD": "Trinidad and Tobago Dollar",
|
||||
"TWD": "New Taiwan Dollar",
|
||||
"TZS": "Tanzanian Shilling",
|
||||
"UAH": "Ukrainian Hryvnia",
|
||||
"UGX": "Ugandan Shilling",
|
||||
"USD": "US Dollar",
|
||||
"UYU": "Uruguayan Peso",
|
||||
"UZS": "Uzbekistan Som",
|
||||
"VEF": "Venezuelan Bolívar",
|
||||
"VES": "Venezuelan Bolívar Soberano",
|
||||
"VND": "Vietnamese Đồng",
|
||||
"VUV": "Vanuatu Vatu",
|
||||
"WST": "Samoan Tala",
|
||||
"XAF": "Central African Cfa Franc",
|
||||
"XAG": "Silver (Troy Ounce)",
|
||||
"XAU": "Gold (Troy Ounce)",
|
||||
"XCD": "East Caribbean Dollar",
|
||||
"XDR": "Special Drawing Rights",
|
||||
"XOF": "West African Cfa Franc",
|
||||
"XPD": "Palladium",
|
||||
"XPF": "Cfp Franc",
|
||||
"XPT": "Platinum",
|
||||
"YER": "Yemeni Rial",
|
||||
"ZAR": "South African Rand",
|
||||
"ZMW": "Zambian Kwacha",
|
||||
"ZWL": "Zimbabwean Dollar",
|
||||
}
|
||||
|
||||
|
||||
class Provider(NamedTuple):
|
||||
name: str
|
||||
domain: str
|
||||
api_url: str
|
||||
getter: Callable
|
||||
|
||||
|
||||
exchange_rate_providers = {
|
||||
"bitfinex": Provider(
|
||||
"Bitfinex",
|
||||
"bitfinex.com",
|
||||
"https://api.bitfinex.com/v1/pubticker/{from}{to}",
|
||||
lambda data, replacements: data["last_price"],
|
||||
),
|
||||
"bitstamp": Provider(
|
||||
"Bitstamp",
|
||||
"bitstamp.net",
|
||||
"https://www.bitstamp.net/api/v2/ticker/{from}{to}/",
|
||||
lambda data, replacements: data["last"],
|
||||
),
|
||||
"coinbase": Provider(
|
||||
"Coinbase",
|
||||
"coinbase.com",
|
||||
"https://api.coinbase.com/v2/exchange-rates?currency={FROM}",
|
||||
lambda data, replacements: data["data"]["rates"][replacements["TO"]],
|
||||
),
|
||||
"coinmate": Provider(
|
||||
"CoinMate",
|
||||
"coinmate.io",
|
||||
"https://coinmate.io/api/ticker?currencyPair={FROM}_{TO}",
|
||||
lambda data, replacements: data["data"]["last"],
|
||||
),
|
||||
"kraken": Provider(
|
||||
"Kraken",
|
||||
"kraken.com",
|
||||
"https://api.kraken.com/0/public/Ticker?pair=XBT{TO}",
|
||||
lambda data, replacements: data["result"]["XXBTZ" + replacements["TO"]]["c"][0],
|
||||
),
|
||||
}
|
||||
|
||||
|
||||
async def btc_price(currency: str) -> float:
|
||||
replacements = {"FROM": "BTC", "from": "btc", "TO": currency.upper(), "to": currency.lower()}
|
||||
rates = []
|
||||
send_channel, receive_channel = trio.open_memory_channel(0)
|
||||
|
||||
async def controller(nursery):
|
||||
failures = 0
|
||||
while True:
|
||||
rate = await receive_channel.receive()
|
||||
if rate:
|
||||
rates.append(rate)
|
||||
else:
|
||||
failures += 1
|
||||
if len(rates) >= 2 or len(rates) == 1 and failures >= 2:
|
||||
nursery.cancel_scope.cancel()
|
||||
break
|
||||
if failures == len(exchange_rate_providers):
|
||||
nursery.cancel_scope.cancel()
|
||||
break
|
||||
|
||||
async def fetch_price(key: str, provider: Provider):
|
||||
try:
|
||||
url = provider.api_url.format(**replacements)
|
||||
async with httpx.AsyncClient() as client:
|
||||
r = await client.get(url, timeout=0.5)
|
||||
r.raise_for_status()
|
||||
data = r.json()
|
||||
rate = float(provider.getter(data, replacements))
|
||||
await send_channel.send(rate)
|
||||
except Exception:
|
||||
await send_channel.send(None)
|
||||
|
||||
async with trio.open_nursery() as nursery:
|
||||
nursery.start_soon(controller, nursery)
|
||||
for key, provider in exchange_rate_providers.items():
|
||||
nursery.start_soon(fetch_price, key, provider)
|
||||
|
||||
if not rates:
|
||||
return 9999999999
|
||||
|
||||
return sum([rate for rate in rates]) / len(rates)
|
||||
|
||||
|
||||
async def get_fiat_rate_satoshis(currency: str) -> float:
|
||||
return int(100_000_000 / (await btc_price(currency)))
|
||||
|
||||
|
||||
async def fiat_amount_as_satoshis(amount: float, currency: str) -> int:
|
||||
return int(amount * (await get_fiat_rate_satoshis(currency)))
|
||||
Loading…
Reference in New Issue
Block a user