Justin Gu
38731114b6
feat(backtest): 回测 REST API + 策略注册表 + 组合回测引擎
后端回测系统完整实现:
策略注册表(backtest/strategies/):
- Param schema 声明机制,支持动态表单渲染
- 5 个内置策略:MA交叉/MACD/布林/RSI/KDJ
- 参数校验(含 NaN/Inf 拦截、范围检查、类型强制转换)
REST API(web/routers/backtest.py):
- GET /backtest/strategies 策略枚举 + 参数 schema
- POST /backtest/run 同步回测(内联 OHLCV)
- POST /backtest/run/async 后台任务回测(含 symbol 取行情)
- POST /backtest/portfolio/run/async 组合回测(多标的)
- GET /backtest/tasks/{id} 任务轮询
后台任务执行器(web/task_runner.py):
- ThreadPoolExecutor + 进程内 LRU 任务表
- status-aware 淘汰(不淘汰 running 任务)
- 线程安全单例 + lifespan shutdown 接入
组合回测引擎改造(portfolio_engine.py):
- 接受策略实例,参数透传到每个标的
- 新增组合净值曲线(按日期并集 forward-fill 对齐求和)
审计修复(/check 三轮):
- Param.validate 拦截 NaN/Inf/giant-int(防 DoS)
- ohlcv max_length=2000(防内存耗尽)
- LRU 淘汰跳过 running 任务(修复结果丢失竞态)
- get_runner double-checked locking(修复单例竞态)
- shutdown 接入 lifespan(修复资源泄漏)
测试:808 passed(含 39 回测路由 + 8 组合引擎 + 安全回归)
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..
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