455 lines
16 KiB
Python
455 lines
16 KiB
Python
from fastapi import FastAPI, HTTPException, Depends
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from fastapi.middleware.cors import CORSMiddleware
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import httpx
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from datetime import datetime, timedelta
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import asyncio, time, os
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from auth import router as auth_router, get_current_user, ensure_tables as ensure_auth_tables
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from db import (
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init_schema, ensure_partitions, get_async_pool, async_fetch, async_fetchrow, async_execute,
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close_async_pool,
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)
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import datetime as _dt
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app = FastAPI(title="Arbitrage Engine API")
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app.add_middleware(
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CORSMiddleware,
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allow_origins=["*"],
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allow_methods=["*"],
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allow_headers=["*"],
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)
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app.include_router(auth_router)
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BINANCE_FAPI = "https://fapi.binance.com/fapi/v1"
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SYMBOLS = ["BTCUSDT", "ETHUSDT"]
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HEADERS = {"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36"}
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# 简单内存缓存（history/stats 60秒，rates 3秒）
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_cache: dict = {}
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def get_cache(key: str, ttl: int):
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entry = _cache.get(key)
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if entry and time.time() - entry["ts"] < ttl:
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return entry["data"]
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return None
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def set_cache(key: str, data):
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_cache[key] = {"ts": time.time(), "data": data}
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async def save_snapshot(rates: dict):
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try:
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btc = rates.get("BTC", {})
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eth = rates.get("ETH", {})
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await async_execute(
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"INSERT INTO rate_snapshots (ts, btc_rate, eth_rate, btc_price, eth_price, btc_index_price, eth_index_price) "
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"VALUES ($1,$2,$3,$4,$5,$6,$7)",
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int(time.time()),
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float(btc.get("lastFundingRate", 0)),
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float(eth.get("lastFundingRate", 0)),
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float(btc.get("markPrice", 0)),
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float(eth.get("markPrice", 0)),
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float(btc.get("indexPrice", 0)),
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float(eth.get("indexPrice", 0)),
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)
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except Exception as e:
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pass # 落库失败不影响API响应
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async def background_snapshot_loop():
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"""后台每2秒自动拉取费率+价格并落库"""
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while True:
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try:
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async with httpx.AsyncClient(timeout=5, headers=HEADERS) as client:
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tasks = [client.get(f"{BINANCE_FAPI}/premiumIndex", params={"symbol": s}) for s in SYMBOLS]
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responses = await asyncio.gather(*tasks, return_exceptions=True)
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result = {}
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for sym, resp in zip(SYMBOLS, responses):
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if isinstance(resp, Exception) or resp.status_code != 200:
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continue
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data = resp.json()
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key = sym.replace("USDT", "")
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result[key] = {
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"lastFundingRate": float(data["lastFundingRate"]),
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"markPrice": float(data["markPrice"]),
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"indexPrice": float(data["indexPrice"]),
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}
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if result:
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await save_snapshot(result)
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except Exception:
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pass
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await asyncio.sleep(2)
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@app.on_event("startup")
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async def startup():
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# 初始化PG schema
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init_schema()
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ensure_auth_tables()
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# 初始化asyncpg池
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await get_async_pool()
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asyncio.create_task(background_snapshot_loop())
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@app.on_event("shutdown")
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async def shutdown():
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await close_async_pool()
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@app.get("/api/health")
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async def health():
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return {"status": "ok", "timestamp": datetime.utcnow().isoformat()}
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@app.get("/api/rates")
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async def get_rates():
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cached = get_cache("rates", 3)
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if cached: return cached
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async with httpx.AsyncClient(timeout=10, headers=HEADERS) as client:
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tasks = [client.get(f"{BINANCE_FAPI}/premiumIndex", params={"symbol": s}) for s in SYMBOLS]
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responses = await asyncio.gather(*tasks)
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result = {}
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for sym, resp in zip(SYMBOLS, responses):
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if resp.status_code != 200:
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raise HTTPException(status_code=502, detail=f"Binance error for {sym}")
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data = resp.json()
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key = sym.replace("USDT", "")
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result[key] = {
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"symbol": sym,
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"markPrice": float(data["markPrice"]),
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"indexPrice": float(data["indexPrice"]),
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"lastFundingRate": float(data["lastFundingRate"]),
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"nextFundingTime": data["nextFundingTime"],
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"timestamp": data["time"],
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}
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set_cache("rates", result)
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asyncio.create_task(save_snapshot(result))
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return result
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@app.get("/api/snapshots")
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async def get_snapshots(hours: int = 24, limit: int = 5000, user: dict = Depends(get_current_user)):
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since = int(time.time()) - hours * 3600
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rows = await async_fetch(
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"SELECT ts, btc_rate, eth_rate, btc_price, eth_price FROM rate_snapshots "
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"WHERE ts >= $1 ORDER BY ts ASC LIMIT $2",
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since, limit
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)
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return {"count": len(rows), "hours": hours, "data": rows}
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@app.get("/api/kline")
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async def get_kline(symbol: str = "BTC", interval: str = "5m", limit: int = 500, user: dict = Depends(get_current_user)):
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interval_secs = {
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"1m": 60, "5m": 300, "30m": 1800,
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"1h": 3600, "4h": 14400, "8h": 28800,
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"1d": 86400, "1w": 604800, "1M": 2592000,
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}
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bar_secs = interval_secs.get(interval, 300)
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rate_col = "btc_rate" if symbol.upper() == "BTC" else "eth_rate"
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price_col = "btc_price" if symbol.upper() == "BTC" else "eth_price"
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since = int(time.time()) - bar_secs * limit
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rows = await async_fetch(
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f"SELECT ts, {rate_col} as rate, {price_col} as price FROM rate_snapshots "
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f"WHERE ts >= $1 ORDER BY ts ASC",
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since
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)
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if not rows:
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return {"symbol": symbol, "interval": interval, "data": []}
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bars: dict = {}
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for r in rows:
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ts, rate, price = r["ts"], r["rate"], r["price"]
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bar_ts = (ts // bar_secs) * bar_secs
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if bar_ts not in bars:
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bars[bar_ts] = {
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"time": bar_ts,
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"open": rate, "high": rate, "low": rate, "close": rate,
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"price_open": price, "price_high": price, "price_low": price, "price_close": price,
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}
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else:
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b = bars[bar_ts]
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b["high"] = max(b["high"], rate)
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b["low"] = min(b["low"], rate)
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b["close"] = rate
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b["price_high"] = max(b["price_high"], price)
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b["price_low"] = min(b["price_low"], price)
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b["price_close"] = price
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data = sorted(bars.values(), key=lambda x: x["time"])[-limit:]
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for b in data:
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for k in ("open", "high", "low", "close"):
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b[k] = round(b[k] * 10000, 4)
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return {"symbol": symbol, "interval": interval, "count": len(data), "data": data}
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@app.get("/api/stats/ytd")
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async def get_stats_ytd(user: dict = Depends(get_current_user)):
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cached = get_cache("stats_ytd", 3600)
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if cached: return cached
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import datetime
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year_start = int(datetime.datetime(datetime.datetime.utcnow().year, 1, 1).timestamp() * 1000)
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end_time = int(time.time() * 1000)
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async with httpx.AsyncClient(timeout=20, headers=HEADERS) as client:
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tasks = [
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client.get(f"{BINANCE_FAPI}/fundingRate",
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params={"symbol": s, "startTime": year_start, "endTime": end_time, "limit": 1000})
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for s in SYMBOLS
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]
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responses = await asyncio.gather(*tasks)
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result = {}
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for sym, resp in zip(SYMBOLS, responses):
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if resp.status_code != 200:
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result[sym.replace("USDT","")] = {"annualized": 0, "count": 0}
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continue
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key = sym.replace("USDT", "")
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rates = [float(item["fundingRate"]) for item in resp.json()]
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if not rates:
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result[key] = {"annualized": 0, "count": 0}
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continue
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mean = sum(rates) / len(rates)
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annualized = round(mean * 3 * 365 * 100, 2)
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result[key] = {"annualized": annualized, "count": len(rates)}
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set_cache("stats_ytd", result)
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return result
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@app.get("/api/signals/history")
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async def get_signals_history(limit: int = 100, user: dict = Depends(get_current_user)):
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try:
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rows = await async_fetch(
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"SELECT id, symbol, rate, annualized, sent_at, message FROM signal_logs ORDER BY sent_at DESC LIMIT $1",
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limit
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)
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return {"items": rows}
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except Exception as e:
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return {"items": [], "error": str(e)}
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@app.get("/api/history")
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async def get_history(user: dict = Depends(get_current_user)):
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cached = get_cache("history", 60)
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if cached: return cached
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end_time = int(datetime.utcnow().timestamp() * 1000)
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start_time = int((datetime.utcnow() - timedelta(days=7)).timestamp() * 1000)
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async with httpx.AsyncClient(timeout=15, headers=HEADERS) as client:
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tasks = [
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client.get(f"{BINANCE_FAPI}/fundingRate",
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params={"symbol": s, "startTime": start_time, "endTime": end_time, "limit": 1000})
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for s in SYMBOLS
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]
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responses = await asyncio.gather(*tasks)
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result = {}
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for sym, resp in zip(SYMBOLS, responses):
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if resp.status_code != 200:
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raise HTTPException(status_code=502, detail=f"Binance history error for {sym}")
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key = sym.replace("USDT", "")
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result[key] = [
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{"fundingTime": item["fundingTime"], "fundingRate": float(item["fundingRate"]),
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"timestamp": datetime.utcfromtimestamp(item["fundingTime"] / 1000).isoformat()}
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for item in resp.json()
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]
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set_cache("history", result)
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return result
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@app.get("/api/stats")
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async def get_stats(user: dict = Depends(get_current_user)):
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cached = get_cache("stats", 60)
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if cached: return cached
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end_time = int(datetime.utcnow().timestamp() * 1000)
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start_time = int((datetime.utcnow() - timedelta(days=7)).timestamp() * 1000)
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async with httpx.AsyncClient(timeout=15, headers=HEADERS) as client:
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tasks = [
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client.get(f"{BINANCE_FAPI}/fundingRate",
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params={"symbol": s, "startTime": start_time, "endTime": end_time, "limit": 1000})
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for s in SYMBOLS
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]
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responses = await asyncio.gather(*tasks)
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stats = {}
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for sym, resp in zip(SYMBOLS, responses):
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if resp.status_code != 200:
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raise HTTPException(status_code=502, detail=f"Binance stats error for {sym}")
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key = sym.replace("USDT", "")
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rates = [float(item["fundingRate"]) for item in resp.json()]
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if not rates:
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stats[key] = {"mean7d": 0, "annualized": 0, "count": 0}
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continue
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mean = sum(rates) / len(rates)
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annualized = mean * 3 * 365 * 100
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stats[key] = {
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"mean7d": round(mean * 100, 6),
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"annualized": round(annualized, 2),
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"count": len(rates),
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}
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btc_ann = stats.get("BTC", {}).get("annualized", 0)
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eth_ann = stats.get("ETH", {}).get("annualized", 0)
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btc_mean = stats.get("BTC", {}).get("mean7d", 0)
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eth_mean = stats.get("ETH", {}).get("mean7d", 0)
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stats["combo"] = {
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"mean7d": round((btc_mean + eth_mean) / 2, 6),
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"annualized": round((btc_ann + eth_ann) / 2, 2),
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}
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set_cache("stats", stats)
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return stats
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# ─── aggTrades 查询接口（PG版）───────────────────────────────────
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@app.get("/api/trades/meta")
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async def get_trades_meta(user: dict = Depends(get_current_user)):
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rows = await async_fetch("SELECT symbol, last_agg_id, last_time_ms, updated_at FROM agg_trades_meta")
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result = {}
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for r in rows:
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sym = r["symbol"].replace("USDT", "")
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result[sym] = {
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"last_agg_id": r["last_agg_id"],
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"last_time_ms": r["last_time_ms"],
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"updated_at": r["updated_at"],
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}
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return result
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@app.get("/api/trades/summary")
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async def get_trades_summary(
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symbol: str = "BTC",
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start_ms: int = 0,
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end_ms: int = 0,
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interval: str = "1m",
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user: dict = Depends(get_current_user),
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):
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if end_ms == 0:
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end_ms = int(time.time() * 1000)
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if start_ms == 0:
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start_ms = end_ms - 3600 * 1000
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interval_ms = {"1m": 60000, "5m": 300000, "15m": 900000, "1h": 3600000}.get(interval, 60000)
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sym_full = symbol.upper() + "USDT"
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# PG原生聚合，比Python循环快100倍
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rows = await async_fetch(
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"""
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SELECT
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(time_ms / $4) * $4 AS bar_ms,
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ROUND(SUM(CASE WHEN is_buyer_maker = 0 THEN qty ELSE 0 END)::numeric, 4) AS buy_vol,
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ROUND(SUM(CASE WHEN is_buyer_maker = 1 THEN qty ELSE 0 END)::numeric, 4) AS sell_vol,
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COUNT(*) AS trade_count,
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ROUND((SUM(price * qty) / NULLIF(SUM(qty), 0))::numeric, 2) AS vwap,
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ROUND(MAX(qty)::numeric, 4) AS max_qty
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FROM agg_trades
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WHERE symbol = $1 AND time_ms >= $2 AND time_ms < $3
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GROUP BY bar_ms
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ORDER BY bar_ms ASC
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""",
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sym_full, start_ms, end_ms, interval_ms
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)
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result = []
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for r in rows:
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buy = float(r["buy_vol"])
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sell = float(r["sell_vol"])
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result.append({
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"time_ms": r["bar_ms"],
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"buy_vol": buy,
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"sell_vol": sell,
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"delta": round(buy - sell, 4),
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"total_vol": round(buy + sell, 4),
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"trade_count": r["trade_count"],
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"vwap": float(r["vwap"]) if r["vwap"] else 0,
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"max_qty": float(r["max_qty"]),
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})
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return {"symbol": symbol, "interval": interval, "count": len(result), "data": result}
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@app.get("/api/trades/latest")
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async def get_trades_latest(
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symbol: str = "BTC",
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limit: int = 30,
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user: dict = Depends(get_current_user),
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):
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cache_key = f"trades_latest_{symbol}_{limit}"
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cached = get_cache(cache_key, 2)
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if cached: return cached
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sym_full = symbol.upper() + "USDT"
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rows = await async_fetch(
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"SELECT agg_id, price, qty, time_ms, is_buyer_maker FROM agg_trades "
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"WHERE symbol = $1 ORDER BY time_ms DESC, agg_id DESC LIMIT $2",
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sym_full, limit
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)
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result = {"symbol": symbol, "count": len(rows), "data": rows}
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set_cache(cache_key, result)
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return result
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@app.get("/api/collector/health")
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async def collector_health(user: dict = Depends(get_current_user)):
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now_ms = int(time.time() * 1000)
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rows = await async_fetch("SELECT symbol, last_agg_id, last_time_ms FROM agg_trades_meta")
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status = {}
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for r in rows:
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sym = r["symbol"].replace("USDT", "")
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lag_s = (now_ms - (r["last_time_ms"] or 0)) / 1000
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status[sym] = {
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"last_agg_id": r["last_agg_id"],
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"lag_seconds": round(lag_s, 1),
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"healthy": lag_s < 30,
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}
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return {"collector": status, "timestamp": now_ms}
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# ─── V5 Signal Engine API ────────────────────────────────────────
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@app.get("/api/signals/indicators")
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async def get_signal_indicators(
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symbol: str = "BTC",
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minutes: int = 60,
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user: dict = Depends(get_current_user),
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):
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sym_full = symbol.upper() + "USDT"
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now_ms = int(time.time() * 1000)
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start_ms = now_ms - minutes * 60 * 1000
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rows = await async_fetch(
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"SELECT ts, cvd_fast, cvd_mid, cvd_day, atr_5m, vwap_30m, price, score, signal "
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"FROM signal_indicators_1m WHERE symbol = $1 AND ts >= $2 ORDER BY ts ASC",
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sym_full, start_ms
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)
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return {"symbol": symbol, "count": len(rows), "data": rows}
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@app.get("/api/signals/latest")
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async def get_signal_latest(user: dict = Depends(get_current_user)):
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result = {}
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for sym in ["BTCUSDT", "ETHUSDT"]:
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row = await async_fetchrow(
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"SELECT ts, cvd_fast, cvd_mid, cvd_day, cvd_fast_slope, atr_5m, atr_percentile, "
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"vwap_30m, price, p95_qty, p99_qty, score, signal "
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"FROM signal_indicators WHERE symbol = $1 ORDER BY ts DESC LIMIT 1",
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sym
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)
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if row:
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result[sym.replace("USDT", "")] = row
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return result
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@app.get("/api/signals/trades")
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async def get_signal_trades(
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status: str = "all",
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limit: int = 50,
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user: dict = Depends(get_current_user),
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):
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if status == "all":
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rows = await async_fetch(
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"SELECT * FROM signal_trades ORDER BY ts_open DESC LIMIT $1", limit
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)
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else:
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rows = await async_fetch(
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"SELECT * FROM signal_trades WHERE status = $1 ORDER BY ts_open DESC LIMIT $2",
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status, limit
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)
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return {"count": len(rows), "data": rows}
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