mirror of
https://github.com/Routstr/routstr-core.git
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125 lines
3.6 KiB
Python
125 lines
3.6 KiB
Python
import asyncio
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import os
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import httpx
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from ..core import get_logger
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logger = get_logger(__name__)
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# artifical spread to cover conversion fees
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EXCHANGE_FEE = float(os.environ.get("EXCHANGE_FEE", "1.005")) # 0.5% default
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UPSTREAM_PROVIDER_FEE = float(
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os.environ.get("UPSTREAM_PROVIDER_FEE", "1.05")
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) # 5% default (e.g. openrouter charges 5% margin)
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async def kraken_btc_usd(client: httpx.AsyncClient) -> float | None:
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"""Fetch BTC/USD price from Kraken API."""
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api = "https://api.kraken.com/0/public/Ticker?pair=XBTUSD"
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try:
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response = await client.get(api)
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price_data = response.json()
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price = float(price_data["result"]["XXBTZUSD"]["c"][0])
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return price
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except (httpx.RequestError, KeyError) as e:
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logger.warning(
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"Kraken API error",
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extra={
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"error": str(e),
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"error_type": type(e).__name__,
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"exchange": "kraken",
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},
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)
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return None
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async def coinbase_btc_usd(client: httpx.AsyncClient) -> float | None:
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"""Fetch BTC/USD price from Coinbase API."""
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api = "https://api.coinbase.com/v2/prices/BTC-USD/spot"
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try:
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response = await client.get(api)
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price_data = response.json()
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price = float(price_data["data"]["amount"])
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return price
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except (httpx.RequestError, KeyError) as e:
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logger.warning(
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"Coinbase API error",
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extra={
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"error": str(e),
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"error_type": type(e).__name__,
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"exchange": "coinbase",
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},
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)
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return None
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async def binance_btc_usdt(client: httpx.AsyncClient) -> float | None:
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"""Fetch BTC/USDT price from Binance API."""
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api = "https://api.binance.com/api/v3/ticker/price?symbol=BTCUSDT"
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try:
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response = await client.get(api)
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price_data = response.json()
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price = float(price_data["price"])
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return price
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except (httpx.RequestError, KeyError) as e:
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logger.warning(
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"Binance API error",
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extra={
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"error": str(e),
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"error_type": type(e).__name__,
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"exchange": "binance",
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},
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)
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return None
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async def btc_usd_ask_price() -> float:
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"""Get the highest BTC/USD price from multiple exchanges with fee adjustment."""
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async with httpx.AsyncClient(timeout=30.0) as client:
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try:
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prices = await asyncio.gather(
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kraken_btc_usd(client),
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coinbase_btc_usd(client),
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binance_btc_usdt(client),
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)
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valid_prices = [price for price in prices if price is not None]
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if not valid_prices:
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logger.error("No valid BTC prices obtained from any exchange")
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raise ValueError("Unable to fetch BTC price from any exchange")
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max_price = max(valid_prices)
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final_price = max_price * EXCHANGE_FEE * UPSTREAM_PROVIDER_FEE
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return final_price
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except Exception as e:
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logger.error(
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"Error in BTC price aggregation",
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extra={"error": str(e), "error_type": type(e).__name__},
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)
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raise
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async def sats_usd_ask_price() -> float:
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"""Get the USD price per satoshi."""
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try:
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btc_price = await btc_usd_ask_price()
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sats_price = btc_price / 100_000_000
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return sats_price
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except Exception as e:
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logger.error(
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"Error calculating satoshi price",
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extra={"error": str(e), "error_type": type(e).__name__},
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)
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raise
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