feat: position_sync.py - 仓位对账+SL自动补挂+TP1监控+平仓检测
- 每30秒对账: 本地DB vs 币安持仓/挂单 - SL缺失自动补挂: 立即补→3s复检→再补→2次失败告警 - TP1触发监控: 自动移SL到保本+重挂TP2 - 平仓检测: 币安无仓→查成交记录→计算pnl_r→更新DB - 清算距离三档告警: 20%黄/12%红/8%紧急 - 幽灵仓位检测: 币安有仓但本地无记录
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backend/position_sync.py
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backend/position_sync.py
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#!/usr/bin/env python3
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"""
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Position Sync - 仓位同步与对账模块
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每30秒对账本地DB vs 币安实际持仓/挂单，SL缺失自动补挂
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架构：
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live_executor.py 开仓 → position_sync.py 持续对账 + 监控TP/SL状态
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"""
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import os
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import sys
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import json
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import time
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import logging
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import asyncio
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import hashlib
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import hmac
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from urllib.parse import urlencode
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import psycopg2
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import aiohttp
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# ============ 配置 ============
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TRADE_ENV = os.getenv("TRADE_ENV", "testnet")
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BINANCE_ENDPOINTS = {
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"testnet": "https://testnet.binancefuture.com",
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"production": "https://fapi.binance.com",
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}
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BASE_URL = BINANCE_ENDPOINTS[TRADE_ENV]
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DB_CONFIG = {
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"host": os.getenv("DB_HOST", "10.106.0.3"),
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"port": int(os.getenv("DB_PORT", "5432")),
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"dbname": os.getenv("DB_NAME", "arb_engine"),
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"user": os.getenv("DB_USER", "arb"),
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"password": os.getenv("DB_PASSWORD", "arb_engine_2026"),
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}
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CHECK_INTERVAL = 30 # 对账间隔(秒)
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SL_REHANG_DELAYS = [0, 3] # SL补挂重试延迟(秒)
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MAX_REHANG_RETRIES = 2
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MISMATCH_ESCALATION_SEC = 60 # 差异持续超过此秒数升级告警
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SYMBOLS = ["BTCUSDT", "ETHUSDT", "XRPUSDT", "SOLUSDT"]
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SYMBOL_PRECISION = {
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"BTCUSDT": {"qty": 3, "price": 1},
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"ETHUSDT": {"qty": 3, "price": 2},
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"XRPUSDT": {"qty": 0, "price": 4},
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"SOLUSDT": {"qty": 2, "price": 2},
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}
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logging.basicConfig(
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level=logging.INFO,
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format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
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)
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logger = logging.getLogger("position-sync")
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# ============ API Key ============
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_api_key = None
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_secret_key = None
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def load_api_keys():
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global _api_key, _secret_key
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_api_key = os.getenv("BINANCE_API_KEY")
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_secret_key = os.getenv("BINANCE_SECRET_KEY")
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if _api_key and _secret_key:
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logger.info(f"API Key loaded from env")
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return
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try:
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from google.cloud import secretmanager
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client = secretmanager.SecretManagerServiceClient()
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project = os.getenv("GCP_PROJECT", "gen-lang-client-0835616737")
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prefix = "binance-testnet" if TRADE_ENV == "testnet" else "binance-live"
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_api_key = client.access_secret_version(
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name=f"projects/{project}/secrets/{prefix}-api-key/versions/latest"
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).payload.data.decode()
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_secret_key = client.access_secret_version(
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name=f"projects/{project}/secrets/{prefix}-secret-key/versions/latest"
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).payload.data.decode()
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logger.info(f"API Key loaded from GCP Secret Manager")
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except Exception as e:
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logger.error(f"Failed to load API keys: {e}")
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sys.exit(1)
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def sign_params(params):
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params["timestamp"] = int(time.time() * 1000)
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query_string = urlencode(params)
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signature = hmac.new(_secret_key.encode(), query_string.encode(), hashlib.sha256).hexdigest()
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params["signature"] = signature
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return params
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async def binance_request(session, method, path, params=None):
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url = f"{BASE_URL}{path}"
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headers = {"X-MBX-APIKEY": _api_key}
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if params is None:
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params = {}
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params = sign_params(params)
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try:
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if method == "GET":
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async with session.get(url, params=params, headers=headers) as resp:
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return await resp.json(), resp.status
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elif method == "POST":
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async with session.post(url, params=params, headers=headers) as resp:
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return await resp.json(), resp.status
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elif method == "DELETE":
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async with session.delete(url, params=params, headers=headers) as resp:
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return await resp.json(), resp.status
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except Exception as e:
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logger.error(f"Request failed: {e}")
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return {"error": str(e)}, 500
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# ============ 对账核心 ============
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async def get_binance_positions(session):
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"""获取币安所有持仓"""
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data, status = await binance_request(session, "GET", "/fapi/v2/positionRisk")
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positions = {}
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if status == 200 and isinstance(data, list):
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for pos in data:
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amt = float(pos.get("positionAmt", 0))
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if amt != 0:
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positions[pos["symbol"]] = {
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"amount": amt,
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"direction": "LONG" if amt > 0 else "SHORT",
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"entry_price": float(pos.get("entryPrice", 0)),
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"unrealized_pnl": float(pos.get("unRealizedProfit", 0)),
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"liquidation_price": float(pos.get("liquidationPrice", 0)),
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"mark_price": float(pos.get("markPrice", 0)),
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}
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return positions
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async def get_binance_open_orders(session, symbol=None):
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"""获取币安挂单"""
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params = {}
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if symbol:
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params["symbol"] = symbol
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data, status = await binance_request(session, "GET", "/fapi/v1/openOrders", params)
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if status == 200 and isinstance(data, list):
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return data
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return []
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def get_local_positions(conn):
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"""获取本地DB活跃持仓"""
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cur = conn.cursor()
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cur.execute("""
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SELECT id, symbol, strategy, direction, entry_price, sl_price, tp1_price, tp2_price,
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tp1_hit, status, risk_distance, binance_order_id
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FROM live_trades
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WHERE status IN ('active', 'tp1_hit')
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ORDER BY entry_ts DESC
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""")
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positions = []
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for row in cur.fetchall():
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positions.append({
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"id": row[0], "symbol": row[1], "strategy": row[2], "direction": row[3],
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"entry_price": row[4], "sl_price": row[5], "tp1_price": row[6], "tp2_price": row[7],
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"tp1_hit": row[8], "status": row[9], "risk_distance": row[10],
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"binance_order_id": row[11],
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})
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return positions
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async def check_sl_exists(session, symbol, direction):
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"""检查是否有SL挂单"""
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orders = await get_binance_open_orders(session, symbol)
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close_side = "SELL" if direction == "LONG" else "BUY"
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for order in orders:
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if order.get("type") == "STOP_MARKET" and order.get("side") == close_side:
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return True, order
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return False, None
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async def rehang_sl(session, symbol, direction, sl_price, quantity):
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"""补挂SL保护单"""
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prec = SYMBOL_PRECISION.get(symbol, {"qty": 3, "price": 2})
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close_side = "SELL" if direction == "LONG" else "BUY"
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qty_str = f"{abs(quantity):.{prec['qty']}f}"
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price_str = f"{sl_price:.{prec['price']}f}"
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params = {
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"symbol": symbol,
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"side": close_side,
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"type": "STOP_MARKET",
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"stopPrice": price_str,
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"quantity": qty_str,
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"reduceOnly": "true",
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}
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data, status = await binance_request(session, "POST", "/fapi/v1/order", params)
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return status == 200, data
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async def reconcile(session, conn):
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"""执行一次完整对账"""
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local_positions = get_local_positions(conn)
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binance_positions = await get_binance_positions(session)
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issues = []
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cur = conn.cursor()
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# 1. 检查本地有仓但币安没有（漏单/已被清算）
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for lp in local_positions:
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symbol = lp["symbol"]
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bp = binance_positions.get(symbol)
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if not bp:
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issues.append({
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"type": "local_only",
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"severity": "critical",
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"symbol": symbol,
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"detail": f"本地有{lp['direction']}仓位(id={lp['id']})但币安无持仓",
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})
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continue
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# 方向不一致
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if bp["direction"] != lp["direction"]:
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issues.append({
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"type": "direction_mismatch",
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"severity": "critical",
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"symbol": symbol,
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"detail": f"本地={lp['direction']} vs 币安={bp['direction']}",
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})
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continue
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# 2. 检查SL保护单是否存在
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sl_exists, sl_order = await check_sl_exists(session, symbol, lp["direction"])
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if not sl_exists:
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issues.append({
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"type": "sl_missing",
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"severity": "critical",
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"symbol": symbol,
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"detail": f"SL保护单缺失! 仓位裸奔中!",
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})
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# 自动补挂SL
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logger.warning(f"[{symbol}] ⚠️ SL缺失，开始自动补挂...")
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success = False
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for attempt, delay in enumerate(SL_REHANG_DELAYS):
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if delay > 0:
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await asyncio.sleep(delay)
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ok, data = await rehang_sl(session, symbol, lp["direction"], lp["sl_price"], bp["amount"])
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if ok:
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logger.info(f"[{symbol}] ✅ SL补挂成功 (attempt={attempt+1})")
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success = True
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break
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else:
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logger.error(f"[{symbol}] ❌ SL补挂失败 (attempt={attempt+1}): {data}")
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if not success:
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issues.append({
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"type": "sl_rehang_failed",
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"severity": "emergency",
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"symbol": symbol,
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"detail": f"SL补挂{MAX_REHANG_RETRIES}次全部失败! 建议进入只减仓模式!",
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})
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# 3. 检查清算距离
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if bp.get("liquidation_price") and bp.get("mark_price"):
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liq = bp["liquidation_price"]
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mark = bp["mark_price"]
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if liq > 0 and mark > 0:
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if lp["direction"] == "LONG":
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dist_pct = (mark - liq) / mark * 100
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else:
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dist_pct = (liq - mark) / mark * 100
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if dist_pct < 8:
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issues.append({
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"type": "liquidation_near",
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"severity": "emergency",
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"symbol": symbol,
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"detail": f"距清算仅{dist_pct:.1f}%! 建议立即减仓!",
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})
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elif dist_pct < 12:
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issues.append({
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"type": "liquidation_warning",
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"severity": "high",
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"symbol": symbol,
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"detail": f"距清算{dist_pct:.1f}%",
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})
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elif dist_pct < 20:
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issues.append({
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"type": "liquidation_caution",
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"severity": "medium",
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"symbol": symbol,
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"detail": f"距清算{dist_pct:.1f}%",
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})
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# 4. 检查币安有仓但本地没有（幽灵仓位）
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local_symbols = {lp["symbol"] for lp in local_positions}
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for symbol, bp in binance_positions.items():
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if symbol not in local_symbols and symbol in [s for s in SYMBOLS]:
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issues.append({
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"type": "exchange_only",
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"severity": "high",
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"symbol": symbol,
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"detail": f"币安有{bp['direction']}仓位但本地无记录",
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})
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# 记录对账结果
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now_ms = int(time.time() * 1000)
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result = {
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"timestamp_ms": now_ms,
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"local_count": len(local_positions),
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"exchange_count": len(binance_positions),
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"issues_count": len(issues),
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"issues": issues,
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"status": "ok" if len(issues) == 0 else "mismatch",
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}
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# 写对账结果到DB（可选：创建reconciliation_log表）
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if issues:
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for issue in issues:
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level = "🔴" if issue["severity"] in ("critical", "emergency") else "🟡"
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logger.warning(f"{level} [{issue['symbol']}] {issue['type']}: {issue['detail']}")
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else:
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logger.info(f"✅ 对账正常 | 本地={len(local_positions)}仓 | 币安={len(binance_positions)}仓")
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return result
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# ============ TP1触发监控 ============
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async def check_tp1_triggers(session, conn):
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"""检查TP1是否触发，触发后移SL到保本价"""
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local_positions = get_local_positions(conn)
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cur = conn.cursor()
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for lp in local_positions:
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if lp["tp1_hit"]:
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continue # 已处理
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symbol = lp["symbol"]
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# 查币安挂单，看TP1是否已成交（不在挂单列表里了）
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orders = await get_binance_open_orders(session, symbol)
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close_side = "SELL" if lp["direction"] == "LONG" else "BUY"
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tp1_found = False
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for order in orders:
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if (order.get("type") == "TAKE_PROFIT_MARKET"
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and order.get("side") == close_side
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and abs(float(order.get("stopPrice", 0)) - lp["tp1_price"]) < lp["tp1_price"] * 0.001):
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tp1_found = True
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break
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|
|
||||||
|
if not tp1_found and lp["status"] == "active":
|
||||||
|
# TP1可能已触发，验证仓位是否减半
|
||||||
|
bp = (await get_binance_positions(session)).get(symbol)
|
||||||
|
if bp and abs(bp["amount"]) < abs(float(lp.get("binance_order_id", "0") or "0")):
|
||||||
|
# 确认TP1触发
|
||||||
|
logger.info(f"[{symbol}] ✅ TP1触发! 移SL到保本价")
|
||||||
|
|
||||||
|
# 取消旧SL
|
||||||
|
await binance_request(session, "DELETE", "/fapi/v1/allOpenOrders", {"symbol": symbol})
|
||||||
|
|
||||||
|
# 计算保本SL
|
||||||
|
if lp["direction"] == "LONG":
|
||||||
|
new_sl = lp["entry_price"] * 1.0005
|
||||||
|
else:
|
||||||
|
new_sl = lp["entry_price"] * 0.9995
|
||||||
|
|
||||||
|
# 挂新SL（半仓）
|
||||||
|
prec = SYMBOL_PRECISION.get(symbol, {"qty": 3, "price": 2})
|
||||||
|
ok, _ = await rehang_sl(session, symbol, lp["direction"], new_sl, bp["amount"])
|
||||||
|
|
||||||
|
# 重新挂TP2（半仓）
|
||||||
|
tp2_price = lp["tp2_price"]
|
||||||
|
qty_str = f"{abs(bp['amount']):.{prec['qty']}f}"
|
||||||
|
price_str = f"{tp2_price:.{prec['price']}f}"
|
||||||
|
await binance_request(session, "POST", "/fapi/v1/order", {
|
||||||
|
"symbol": symbol, "side": close_side, "type": "TAKE_PROFIT_MARKET",
|
||||||
|
"stopPrice": price_str, "quantity": qty_str, "reduceOnly": "true",
|
||||||
|
})
|
||||||
|
|
||||||
|
# 更新DB
|
||||||
|
cur.execute("""
|
||||||
|
UPDATE live_trades SET tp1_hit=TRUE, sl_price=%s, status='tp1_hit'
|
||||||
|
WHERE id=%s
|
||||||
|
""", (new_sl, lp["id"]))
|
||||||
|
conn.commit()
|
||||||
|
logger.info(f"[{symbol}] 🛡 SL移至保本 {new_sl:.4f}, TP2={tp2_price:.4f}")
|
||||||
|
|
||||||
|
|
||||||
|
# ============ 平仓检测 ============
|
||||||
|
|
||||||
|
async def check_closed_positions(session, conn):
|
||||||
|
"""检测已平仓的交易，更新DB"""
|
||||||
|
local_positions = get_local_positions(conn)
|
||||||
|
binance_positions = await get_binance_positions(session)
|
||||||
|
cur = conn.cursor()
|
||||||
|
|
||||||
|
for lp in local_positions:
|
||||||
|
symbol = lp["symbol"]
|
||||||
|
bp = binance_positions.get(symbol)
|
||||||
|
|
||||||
|
# 币安无持仓但本地还active → 已平仓
|
||||||
|
if not bp:
|
||||||
|
logger.info(f"[{symbol}] 📝 检测到平仓，查询成交记录...")
|
||||||
|
|
||||||
|
# 查最近成交确定平仓价
|
||||||
|
# 简化：用当前标记价做近似
|
||||||
|
now_ms = int(time.time() * 1000)
|
||||||
|
rd = lp["risk_distance"] or 1
|
||||||
|
|
||||||
|
# 判断平仓类型（通过挂单是否还在来推断）
|
||||||
|
# 如果SL/TP都不在了，说明触发了其中一个
|
||||||
|
status = "unknown"
|
||||||
|
exit_price = lp["entry_price"] # fallback
|
||||||
|
|
||||||
|
# 尝试从最近交易记录获取
|
||||||
|
trades_data, trades_status = await binance_request(session, "GET", "/fapi/v1/userTrades", {
|
||||||
|
"symbol": symbol, "limit": 5
|
||||||
|
})
|
||||||
|
if trades_status == 200 and isinstance(trades_data, list) and trades_data:
|
||||||
|
last_trade = trades_data[-1]
|
||||||
|
exit_price = float(last_trade.get("price", exit_price))
|
||||||
|
|
||||||
|
# 计算pnl
|
||||||
|
if lp["direction"] == "LONG":
|
||||||
|
raw_pnl_r = (exit_price - lp["entry_price"]) / rd
|
||||||
|
else:
|
||||||
|
raw_pnl_r = (lp["entry_price"] - exit_price) / rd
|
||||||
|
|
||||||
|
if lp["tp1_hit"]:
|
||||||
|
tp1_r = abs(lp["tp1_price"] - lp["entry_price"]) / rd
|
||||||
|
pnl_r = 0.5 * tp1_r + 0.5 * raw_pnl_r
|
||||||
|
else:
|
||||||
|
pnl_r = raw_pnl_r
|
||||||
|
|
||||||
|
# 扣手续费
|
||||||
|
fee_r = 0.001 * lp["entry_price"] / rd
|
||||||
|
pnl_r -= fee_r
|
||||||
|
|
||||||
|
# 判断状态
|
||||||
|
if pnl_r > 0.5:
|
||||||
|
status = "tp"
|
||||||
|
elif pnl_r < -0.5:
|
||||||
|
status = "sl"
|
||||||
|
elif lp["tp1_hit"] and pnl_r >= -0.1:
|
||||||
|
status = "sl_be"
|
||||||
|
else:
|
||||||
|
status = "closed"
|
||||||
|
|
||||||
|
cur.execute("""
|
||||||
|
UPDATE live_trades SET status=%s, exit_price=%s, exit_ts=%s, pnl_r=%s
|
||||||
|
WHERE id=%s
|
||||||
|
""", (status, exit_price, now_ms, round(pnl_r, 4), lp["id"]))
|
||||||
|
conn.commit()
|
||||||
|
|
||||||
|
logger.info(f"[{symbol}] 📝 平仓记录: {status} | exit={exit_price:.4f} | pnl={pnl_r:+.2f}R")
|
||||||
|
|
||||||
|
|
||||||
|
# ============ 主循环 ============
|
||||||
|
|
||||||
|
async def main():
|
||||||
|
logger.info("=" * 60)
|
||||||
|
logger.info(f"🔄 Position Sync 启动 | 环境={TRADE_ENV} | 间隔={CHECK_INTERVAL}秒")
|
||||||
|
logger.info("=" * 60)
|
||||||
|
|
||||||
|
load_api_keys()
|
||||||
|
conn = psycopg2.connect(**DB_CONFIG)
|
||||||
|
|
||||||
|
async with aiohttp.ClientSession() as session:
|
||||||
|
while True:
|
||||||
|
try:
|
||||||
|
# 1. 对账
|
||||||
|
result = await reconcile(session, conn)
|
||||||
|
|
||||||
|
# 2. 检查TP1触发
|
||||||
|
await check_tp1_triggers(session, conn)
|
||||||
|
|
||||||
|
# 3. 检查已平仓
|
||||||
|
await check_closed_positions(session, conn)
|
||||||
|
|
||||||
|
await asyncio.sleep(CHECK_INTERVAL)
|
||||||
|
|
||||||
|
except KeyboardInterrupt:
|
||||||
|
break
|
||||||
|
except Exception as e:
|
||||||
|
logger.error(f"❌ 对账异常: {e}", exc_info=True)
|
||||||
|
await asyncio.sleep(10)
|
||||||
|
|
||||||
|
conn.close()
|
||||||
|
logger.info("Position Sync 已停止")
|
||||||
|
|
||||||
|
|
||||||
|
if __name__ == "__main__":
|
||||||
|
asyncio.run(main())
|
||||||
Loading…
Reference in New Issue
Block a user