180 lines
7.1 KiB
Python
180 lines
7.1 KiB
Python
import sqlite3
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import pymysql
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from datetime import datetime
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import json
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import os
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from contextlib import contextmanager
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from dotenv import load_dotenv
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load_dotenv()
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class TradingDatabase:
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"""交易数据库管理类 - 用于记录交易历史和预测结果
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支持 SQLite (本地) 和 MySQL (远程)。
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如果 .env 中配置了 MYSQL_HOST，则优先使用 MySQL。
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"""
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def __init__(self, db_path="trading_history.db"):
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self.db_path = db_path
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self.use_mysql = bool(os.getenv('MYSQL_HOST'))
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self._init_db()
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@contextmanager
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def get_connection(self):
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"""数据库连接上下文管理器"""
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if self.use_mysql:
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conn = pymysql.connect(
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host=os.getenv('MYSQL_HOST'),
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port=int(os.getenv('MYSQL_PORT', 3306)),
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user=os.getenv('MYSQL_USER'),
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password=os.getenv('MYSQL_PASSWORD'),
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database=os.getenv('MYSQL_DB'),
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charset='utf8mb4',
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cursorclass=pymysql.cursors.DictCursor
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)
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else:
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conn = sqlite3.connect(self.db_path)
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# Make sqlite behave like dict cursor for consistency if needed,
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# but existing code might expect tuple.
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# Actually existing code uses cursor.execute directly.
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# SQLite cursor returns tuples by default.
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# PyMySQL DictCursor returns dicts.
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# We need to be careful about compatibility.
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# The existing log_trade uses INSERT which is fine.
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# check_existing_trade uses SELECT count(*), fetchone()[0], which works for both if we don't use DictCursor for MySQL or handle it.
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# Let's use standard cursor for MySQL for compatibility with existing fetchone()[0] usage.
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try:
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yield conn
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finally:
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conn.close()
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def _init_db(self):
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"""初始化数据库表结构"""
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with self.get_connection() as conn:
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cursor = conn.cursor()
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if self.use_mysql:
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# MySQL Schema
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cursor.execute('''
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CREATE TABLE IF NOT EXISTS trades (
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id INT AUTO_INCREMENT PRIMARY KEY,
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timestamp DATETIME,
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market_title VARCHAR(255),
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market_slug VARCHAR(255),
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model_name VARCHAR(50),
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prediction VARCHAR(10),
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probability DOUBLE,
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action VARCHAR(10),
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price DOUBLE,
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amount DOUBLE,
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size DOUBLE,
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status VARCHAR(20),
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error_message TEXT,
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raw_data JSON,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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INDEX idx_market_slug (market_slug),
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INDEX idx_status (status)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
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''')
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else:
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# SQLite Schema
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cursor.execute('''
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CREATE TABLE IF NOT EXISTS trades (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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timestamp TEXT,
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market_title TEXT,
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market_slug TEXT,
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model_name TEXT,
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prediction TEXT,
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probability REAL,
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action TEXT,
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price REAL,
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amount REAL,
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size REAL,
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status TEXT,
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error_message TEXT,
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raw_data TEXT,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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)
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''')
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conn.commit()
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def log_trade(self, trade_data: dict):
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"""
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记录交易信息
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"""
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try:
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with self.get_connection() as conn:
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cursor = conn.cursor()
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# Prepare data
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timestamp = trade_data.get('timestamp', datetime.now().isoformat())
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raw_data_json = json.dumps(trade_data.get('raw_data', {}), ensure_ascii=False)
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if self.use_mysql:
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sql = '''
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INSERT INTO trades (
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timestamp, market_title, market_slug, model_name,
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prediction, probability, action, price, amount, size,
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status, error_message, raw_data
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) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)
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'''
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else:
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sql = '''
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INSERT INTO trades (
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timestamp, market_title, market_slug, model_name,
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prediction, probability, action, price, amount, size,
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status, error_message, raw_data
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) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
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'''
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cursor.execute(sql, (
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timestamp,
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trade_data.get('market_title'),
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trade_data.get('market_slug'),
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trade_data.get('model_name'),
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trade_data.get('prediction'),
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trade_data.get('probability'),
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trade_data.get('action'),
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trade_data.get('price'),
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trade_data.get('amount'),
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trade_data.get('size'),
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trade_data.get('status'),
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trade_data.get('error_message'),
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raw_data_json
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))
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conn.commit()
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except Exception as e:
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print(f"写入数据库失败: {e}")
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def check_existing_trade(self, market_slug: str, status: str = 'success') -> bool:
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"""
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检查指定市场是否已有成功交易记录
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"""
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try:
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with self.get_connection() as conn:
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cursor = conn.cursor()
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if self.use_mysql:
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sql = 'SELECT COUNT(*) FROM trades WHERE market_slug = %s AND status = %s'
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else:
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sql = 'SELECT COUNT(*) FROM trades WHERE market_slug = ? AND status = ?'
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cursor.execute(sql, (market_slug, status))
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# Fetch result compatible with both
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result = cursor.fetchone()
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if isinstance(result, dict): # If DictCursor was used (not used here but for safety)
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count = list(result.values())[0]
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elif isinstance(result, (list, tuple)):
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count = result[0]
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else:
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count = 0
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return count > 0
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except Exception as e:
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print(f"检查已存在交易失败: {e}")
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return False
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