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#!/usr/bin/env python3
"""
Binance Public API Client - REAL DATA ONLY
Fetches real OHLCV historical data from Binance
NO MOCK DATA - All data from live Binance API
"""
import httpx
import logging
from typing import Dict, Any, List, Optional
from datetime import datetime
from fastapi import HTTPException
logger = logging.getLogger(__name__)
class BinanceClient:
"""
Real Binance Public API Client
Primary source for real historical OHLCV candlestick data
"""
def __init__(self):
self.base_url = "https://api.binance.com/api/v3"
self.timeout = 15.0
# Timeframe mapping
self.timeframe_map = {
"1m": "1m",
"5m": "5m",
"15m": "15m",
"30m": "30m",
"1h": "1h",
"4h": "4h",
"1d": "1d",
"1w": "1w"
}
def _normalize_symbol(self, symbol: str) -> str:
"""Normalize symbol to Binance format (e.g., BTC -> BTCUSDT)"""
symbol = symbol.upper().strip()
# If already has USDT suffix, return as is
if symbol.endswith("USDT"):
return symbol
# Add USDT suffix
return f"{symbol}USDT"
async def get_ohlcv(
self,
symbol: str,
timeframe: str = "1h",
limit: int = 1000
) -> List[Dict[str, Any]]:
"""
Fetch REAL OHLCV candlestick data from Binance
Args:
symbol: Cryptocurrency symbol (e.g., "BTC", "ETH", "BTCUSDT")
timeframe: Time interval (1m, 5m, 15m, 30m, 1h, 4h, 1d, 1w)
limit: Maximum number of candles (max 1000)
Returns:
List of real OHLCV candles
"""
try:
# Normalize symbol
binance_symbol = self._normalize_symbol(symbol)
# Map timeframe
binance_interval = self.timeframe_map.get(timeframe, "1h")
# Limit to max 1000
limit = min(limit, 1000)
async with httpx.AsyncClient(timeout=self.timeout) as client:
response = await client.get(
f"{self.base_url}/klines",
params={
"symbol": binance_symbol,
"interval": binance_interval,
"limit": limit
}
)
response.raise_for_status()
klines = response.json()
# Transform Binance format to standard OHLCV format
ohlcv_data = []
for kline in klines:
# Binance kline format:
# [timestamp, open, high, low, close, volume, ...]
timestamp = int(kline[0])
open_price = float(kline[1])
high_price = float(kline[2])
low_price = float(kline[3])
close_price = float(kline[4])
volume = float(kline[5])
# Filter out invalid candles
if open_price > 0 and close_price > 0:
ohlcv_data.append({
"timestamp": timestamp,
"open": open_price,
"high": high_price,
"low": low_price,
"close": close_price,
"volume": volume
})
logger.info(
f"✅ Binance: Fetched {len(ohlcv_data)} real candles "
f"for {binance_symbol} ({timeframe})"
)
return ohlcv_data
except httpx.HTTPStatusError as e:
if e.response.status_code == 400:
logger.error(f"❌ Binance: Invalid symbol or parameters: {symbol}")
raise HTTPException(
status_code=400,
detail=f"Invalid symbol or parameters: {symbol}"
)
elif e.response.status_code == 404:
logger.error(f"❌ Binance: Symbol not found: {binance_symbol}")
raise HTTPException(
status_code=404,
detail=f"Symbol not found on Binance: {symbol}"
)
elif e.response.status_code == 451:
logger.warning(
f"⚠️ Binance: HTTP 451 - Access restricted (geo-blocking or legal restrictions) for {binance_symbol}. "
f"Consider using alternative data sources or VPN."
)
raise HTTPException(
status_code=451,
detail=f"Binance API access restricted for your region. Please use alternative data sources (CoinGecko, CoinMarketCap)."
)
else:
logger.error(f"❌ Binance API HTTP error: {e}")
raise HTTPException(
status_code=503,
detail=f"Binance API temporarily unavailable: {str(e)}"
)
except httpx.HTTPError as e:
logger.error(f"❌ Binance API HTTP error: {e}")
raise HTTPException(
status_code=503,
detail=f"Binance API temporarily unavailable: {str(e)}"
)
except Exception as e:
logger.error(f"❌ Binance API failed: {e}")
raise HTTPException(
status_code=503,
detail=f"Failed to fetch real OHLCV data from Binance: {str(e)}"
)
async def get_ticker(self, symbol: str) -> Dict[str, Any]:
"""
Fetch REAL current ticker price
Args:
symbol: Cryptocurrency symbol (e.g., "BTC", "ETH", "BTCUSDT")
Returns:
Real ticker data with current price
"""
try:
binance_symbol = self._normalize_symbol(symbol)
async with httpx.AsyncClient(timeout=self.timeout) as client:
response = await client.get(
f"{self.base_url}/ticker/price",
params={"symbol": binance_symbol}
)
response.raise_for_status()
data = response.json()
return {
"symbol": binance_symbol,
"lastPrice": data.get("price", "0"),
"price": float(data.get("price", 0))
}
except httpx.HTTPStatusError as e:
if e.response.status_code == 400:
return None # Symbol not found
raise HTTPException(
status_code=503,
detail=f"Failed to fetch ticker from Binance: {str(e)}"
)
except Exception as e:
logger.error(f"❌ Binance ticker failed: {e}")
return None
async def get_24h_ticker(self, symbol: str) -> Dict[str, Any]:
"""
Fetch REAL 24-hour ticker price change statistics
Args:
symbol: Cryptocurrency symbol (e.g., "BTC", "ETH")
Returns:
Real 24-hour ticker data
"""
try:
binance_symbol = self._normalize_symbol(symbol)
async with httpx.AsyncClient(timeout=self.timeout) as client:
response = await client.get(
f"{self.base_url}/ticker/24hr",
params={"symbol": binance_symbol}
)
response.raise_for_status()
data = response.json()
# Transform to standard format
ticker = {
"symbol": symbol.upper().replace("USDT", ""),
"price": float(data.get("lastPrice", 0)),
"change24h": float(data.get("priceChange", 0)),
"changePercent24h": float(data.get("priceChangePercent", 0)),
"volume24h": float(data.get("volume", 0)),
"high24h": float(data.get("highPrice", 0)),
"low24h": float(data.get("lowPrice", 0)),
"source": "binance",
"timestamp": int(datetime.utcnow().timestamp() * 1000)
}
logger.info(f"✅ Binance: Fetched real 24h ticker for {binance_symbol}")
return ticker
except httpx.HTTPStatusError as e:
if e.response.status_code == 451:
logger.warning(
f"⚠️ Binance: HTTP 451 - Access restricted (geo-blocking or legal restrictions). "
f"Consider using alternative data sources."
)
raise HTTPException(
status_code=451,
detail=f"Binance API access restricted for your region. Please use alternative data sources (CoinGecko, CoinMarketCap)."
)
logger.error(f"❌ Binance ticker error: {e}")
raise HTTPException(
status_code=503,
detail=f"Failed to fetch ticker from Binance: {str(e)}"
)
except Exception as e:
logger.error(f"❌ Binance ticker failed: {e}")
raise HTTPException(
status_code=503,
detail=f"Failed to fetch real ticker data: {str(e)}"
)
# Global instance
binance_client = BinanceClient()
__all__ = ["BinanceClient", "binance_client"]
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