refactor(data/exchanges): 多子类架构 + 工厂入口
- 每个交易所独立子类：BinanceRestClient extends BaseRestClient - 统一入口 createRestClient(exchangeId) 工厂函数 - KLINE_INTERVAL_MS 移至 constants.ts - fetchKlines 签名统一为 (symbol, startTime, limit?, endTime?) - throttle 限流实际生效 - convertBinanceKline interval 参数化 - 删除 filterConsecutive 死代码 - 更新 run/exchange.ts 和 service/bnkline.ts 调用方
This commit is contained in:
Rekey
@@ -85,14 +85,14 @@ export abstract class BaseRestClient {
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*
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* @param symbol - 交易对符号（如 BTCUSDT）
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* @param startTime - 起始时间（Unix ms）
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* @param endTime - 结束时间（Unix ms）
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* @param limit - 单次最大条数（默认取自 config.defaultLimit）
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* @param endTime - 结束时间（Unix ms），可选
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*/
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abstract fetchKlines(
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symbol: string,
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startTime: number,
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endTime: number,
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limit?: number,
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endTime?: number,
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): Promise<Kline[]>;
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/**
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@@ -0,0 +1,141 @@
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import { MainClient, type Kline as BinanceRestKline } from "binance";
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import { logger } from "../../utils/logger";
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import { exchange } from "../../config";
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import { BaseRestClient } from "../base";
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import type { Kline, MarketInfo, KlineInterval } from "../../types";
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// ============================================================
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// Binance REST K 线 → 本系统标准化 Kline 转换
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// ============================================================
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/**
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* Binance SDK Kline 元组格式（getKlines / getUIKlines 返回）：
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* [0] openTime: number — 开盘时间（Unix ms）
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* [1] open: numberInString — 开盘价
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* [2] high: numberInString — 最高价
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* [3] low: numberInString — 最低价
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* [4] close: numberInString — 收盘价
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* [5] volume: numberInString — 成交量（base 币种）
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* [6] closeTime: number — 收盘时间（Unix ms）
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* [7] quoteVolume: numberInString — 成交额（quote 币种）
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* [8] tradeCount: number — 成交笔数
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* [9] takerBuyBaseVol: numberInString — 主动买入成交量
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* [10] takerBuyQuoteVol: numberInString — 主动买入成交额
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* [11] ignore: numberInString — 忽略字段
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*
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* numberInString = string | number，通过 String() 统一转换。
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*
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* 参考：node_modules/binance/lib/types/shared.d.ts:85-98
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*/
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function convertBinanceKline(
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raw: BinanceRestKline,
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symbol: string,
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interval: KlineInterval,
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): Kline {
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const [
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openTime,
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open,
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high,
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low,
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close,
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volume,
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closeTime,
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quoteVolume,
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tradeCount,
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takerBuyBaseVol,
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takerBuyQuoteVol,
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// [11] ignore — 丢弃
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] = raw;
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return {
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exchange: "binance",
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symbol,
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interval,
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openTime,
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closeTime,
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open: String(open),
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high: String(high),
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low: String(low),
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close: String(close),
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volume: String(volume),
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quoteVolume: String(quoteVolume),
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takerBuyBaseVol: String(takerBuyBaseVol),
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takerBuyQuoteVol: String(takerBuyQuoteVol),
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tradeCount: String(tradeCount),
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isClosed: true, // REST 返回的 K 线均为已闭合历史数据
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};
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}
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// ============================================================
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// BinanceRestClient
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// ============================================================
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export class BinanceRestClient extends BaseRestClient {
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readonly exchange = "binance";
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private client: MainClient;
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constructor() {
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super();
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this.client = new MainClient(
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{
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api_key: exchange.binance.apiKey,
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api_secret: exchange.binance.apiSecret,
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},
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{ timeout: 3000 },
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);
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}
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/**
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* 拉取 1m K 线并转换为本系统标准化 Kline。
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*
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* Binance 硬限制单次最多 1000 条，超限自动裁切。
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* 高周期 K 线通过 TimescaleDB 连续聚合视图生成。
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*
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* @param symbol - 交易对（如 BTCUSDT）
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* @param startTime - 起始时间（Unix ms）
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* @param limit - 单次拉取条数，默认取自 config.defaultLimit
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* @param endTime - 结束时间（Unix ms），可选
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*/
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async fetchKlines(
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symbol: string,
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startTime: number,
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limit?: number,
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endTime?: number,
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): Promise<Kline[]> {
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const effectiveLimit = limit ?? this.config.defaultLimit;
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// Binance 硬限制：单次最多 1000 条
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const safeLimit = Math.min(effectiveLimit, 1000);
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// 限流
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await this.throttle(`${symbol}:1m`);
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const rawKlines = await this.client.getKlines({
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symbol,
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interval: "1m",
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startTime,
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endTime,
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limit: safeLimit,
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});
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logger.debug(
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{ symbol, interval: "1m", startTime, endTime, limit: safeLimit },
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"[binance] fetchKlines 请求参数",
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);
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if (!rawKlines || rawKlines.length === 0) {
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return [];
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}
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// 按 openTime 升序排序（防御性），转换为标准化 Kline
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return rawKlines
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.map((k) => convertBinanceKline(k, symbol, "1m"))
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.sort((a, b) => a.openTime - b.openTime);
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}
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async fetchMarkets(): Promise<MarketInfo[]> {
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// TODO: 调用 Binance /exchangeInfo 接口
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return [];
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}
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}
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@@ -0,0 +1,18 @@
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import type { KlineInterval } from "../types";
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/** K 线周期 → 毫秒数映射（用于时间桶计算） */
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export const KLINE_INTERVAL_MS: Record<KlineInterval, number> = {
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"1m": 60_000,
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"3m": 180_000,
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"5m": 300_000,
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"15m": 900_000,
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"30m": 1_800_000,
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"1h": 3_600_000,
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"2h": 7_200_000,
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"4h": 14_400_000,
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"6h": 21_600_000,
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"8h": 28_800_000,
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"1d": 86_400_000,
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"1w": 604_800_000,
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"1mon": 2_592_000_000,
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};
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@@ -0,0 +1,32 @@
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import { BaseRestClient } from "./base";
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import { BinanceRestClient } from "./binance/rest";
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/** 交易所 ID 到 RestClient 构造器的注册表 */
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const registry: Record<string, () => BaseRestClient> = {
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binance: () => new BinanceRestClient(),
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};
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/**
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* 创建交易所 REST 客户端。
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*
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* 根据交易所 ID 返回对应的 RestClient 实例，
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* 外部无需感知具体子类。
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*
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* @param exchangeId - 交易所标识（如 "binance"）
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* @returns 对应交易所的 RestClient 实例
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* @throws 如果 exchangeId 未注册
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*/
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export function createRestClient(exchangeId: string): BaseRestClient {
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const factory = registry[exchangeId];
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if (!factory) {
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const supported = Object.keys(registry).join(", ");
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throw new Error(
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`[exchanges] 不支持的交易所: "${exchangeId}"，当前支持: ${supported}`,
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);
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}
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return factory();
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}
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export { BaseRestClient } from "./base";
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export { BinanceRestClient } from "./binance/rest";
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export { KLINE_INTERVAL_MS } from "./constants";
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@@ -1,248 +0,0 @@
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import { MainClient, type Kline as BinanceRestKline, CoinMClient } from "binance";
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import { logger } from "../utils/logger";
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import { exchange } from "../config";
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import { BaseRestClient } from './base_rest';
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import type { KlineInterval, Kline, MarketInfo } from '../types';
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/** K 线周期 → 毫秒数映射（用于时间桶计算） */
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export const KLINE_INTERVAL_MS: Record<KlineInterval, number> = {
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"1m": 60_000,
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"3m": 180_000,
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"5m": 300_000,
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"15m": 900_000,
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"30m": 1_800_000,
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"1h": 3_600_000,
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"2h": 7_200_000,
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"4h": 14_400_000,
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"6h": 21_600_000,
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"8h": 28_800_000,
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"1d": 86_400_000,
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"1w": 604_800_000,
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"1mon": 2_592_000_000,
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};
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// ============================================================
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// Binance REST K 线 → 本系统标准化 Kline 转换
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// ============================================================
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/**
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* Binance SDK Kline 元组格式（getKlines / getUIKlines 返回）：
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* [0] openTime: number — 开盘时间（Unix ms）
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* [1] open: numberInString — 开盘价
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* [2] high: numberInString — 最高价
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* [3] low: numberInString — 最低价
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* [4] close: numberInString — 收盘价
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* [5] volume: numberInString — 成交量（base 币种）
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* [6] closeTime: number — 收盘时间（Unix ms）
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* [7] quoteVolume: numberInString — 成交额（quote 币种）
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* [8] tradeCount: number — 成交笔数
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* [9] takerBuyBaseVol: numberInString — 主动买入成交量
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* [10] takerBuyQuoteVol: numberInString — 主动买入成交额
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* [11] ignore: numberInString — 忽略字段
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*
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* numberInString = string | number，通过 Number() 统一转换。
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*
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* 参考：node_modules/binance/lib/types/shared.d.ts:85-98
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*/
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function convertBinanceKline(
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raw: BinanceRestKline,
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symbol: string,
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): Kline {
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const [
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openTime,
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open,
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high,
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low,
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close,
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volume,
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closeTime,
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quoteVolume,
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tradeCount,
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takerBuyBaseVol,
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takerBuyQuoteVol,
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// [11] ignore — 丢弃
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] = raw;
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return {
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exchange: "binance",
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symbol,
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interval: "1m",
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openTime: openTime,
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closeTime: closeTime,
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open: String(open),
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high: String(high),
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low: String(low),
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close: String(close),
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volume: String(volume),
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quoteVolume: String(quoteVolume),
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takerBuyBaseVol: String(takerBuyBaseVol),
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takerBuyQuoteVol: String(takerBuyQuoteVol),
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tradeCount: String(tradeCount),
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isClosed: true, // REST 返回的 K 线均为已闭合历史数据
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};
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}
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// ============================================================
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// Binance REST 拉取函数
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// ============================================================
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/**
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* 通过 Binance 原生 SDK 拉取 1m K 线并转换为本系统 Kline。
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*
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* getUIKlines 与 getKlines 返回同构的 Kline[] 元组，
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* getUIKlines 额外支持 timeZone 参数，适合按交易所时区对齐。
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*
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* @param symbol - 交易对（如 BTCUSDT）
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* @param startTime - 起始时间（Unix ms）
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* @param endTime - 结束时间（Unix ms），可选
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* @param limit - 单次拉取条数，默认 500（最大 1000）
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*/
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async function fetchBinanceKlines(
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symbol: string,
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startTime: number,
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endTime?: number,
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limit = 500,
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): Promise<Kline[]> {
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const client = new MainClient({
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api_key: exchange.binance.apiKey,
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api_secret: exchange.binance.apiSecret,
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}, {
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timeout: 3000,
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});
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// Binance 硬限制：单次最多 1000 条
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const safeLimit = Math.min(limit, 1000);
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const rawKlines = await client.getKlines({
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symbol,
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interval: "1m",
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startTime,
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endTime,
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limit: safeLimit,
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});
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logger.debug({
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symbol,
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interval: "1m",
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startTime,
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endTime,
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limit: safeLimit,
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}, 'fetchBinanceKlines arguments');
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if (!rawKlines || rawKlines.length === 0) {
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return [];
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}
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return filterConsecutive(
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rawKlines.map((k) => convertBinanceKline(k, symbol)),
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);
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}
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/**
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* 过滤出严格连续（无时间缺口）的 K 线序列。
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*
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* 处理流程：
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* 1. 按 openTime 升序排序（防御性，确保时间单调递增）
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* 2. 从首条 K 线开始遍历，仅保留相邻间隔恰好等于 intervalMs 的条目
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* 3. 一旦检测到缺口（间隔 ≠ intervalMs），立即终止并丢弃后续所有数据
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*
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* 设计意图：
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* - 时间序列分析（回测、指标计算）依赖连续数据，缺口会引入偏误
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* - 缺口之后的数据可能来自另一段不连续的拉取结果，混入后风险更高
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* - "截断"策略优于"填充/跳过"，避免伪造数据或隐藏数据质量问题
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*
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* @param klines - 待过滤的 K 线数组（可能乱序、可能含缺口）
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* @param interval - K 线周期，用于查表获取 intervalMs
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* @returns 从首条开始严格连续的最大前缀子序列；空数组无缺口时返回完整排序结果
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*/
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function filterConsecutive(klines: Kline[]) {
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// 防御性排序：Binance API 不保证返回顺序，升序排列确保时间单调
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const results = klines.sort((a: Kline, b: Kline) => {
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return a.openTime - b.openTime;
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});
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return results;
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// console.log(results);
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// let _openTime = 0; // 哨兵：0 表示尚未初始化，非 0 表示上一条已收录 K 线的 openTime
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// const rets: Kline[] = []; // 累积连续 K 线结果
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// for (let item of results) {
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// console.log(item.openTime);
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// // 分支 1 —— 首条 K 线：无条件收录，并初始化哨兵
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// if (_openTime === 0) {
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// _openTime = item.openTime;
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// rets.push(item);
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// continue;
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// }
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// // 分支 2 —— 严格连续：当前 openTime 与上一条恰好相差一个周期
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// if (item.openTime - _openTime === intervalMs) {
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// _openTime = item.openTime;
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// rets.push(item);
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// continue;
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// }
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// // 分支 3 —— 检测到缺口：截断，丢弃当前及之后所有 K 线
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// break;
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// }
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// return rets;
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}
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|
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// ============================================================
|
||||
// Client —— 多交易所 REST 客户端
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||||
// ============================================================
|
||||
|
||||
export class Client extends BaseRestClient {
|
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exchange: string;
|
||||
|
||||
/**
|
||||
* @param exchange - 交易所 ID（如 "binance"、"okx"、"bybit"）
|
||||
* 内部根据 ID 分发到对应的 SDK 实现
|
||||
*/
|
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constructor(exchange: string) {
|
||||
super();
|
||||
this.exchange = exchange;
|
||||
}
|
||||
|
||||
/**
|
||||
* 拉取 1m 历史 K 线数据，返回标准化 Kline 数组。
|
||||
*
|
||||
* 根据交易所 ID 分发到各自的 SDK 拉取函数。
|
||||
* K 线周期固定为 1m，高周期通过 TimescaleDB 连续聚合视图生成。
|
||||
*
|
||||
* @param symbol - 交易对符号（如 BTCUSDT）
|
||||
* @param startTime - 起始时间（Unix ms）
|
||||
* @param endTime - 结束时间（Unix ms），可选
|
||||
* @param limit - 最大返回条数，默认取自 config.defaultLimit
|
||||
*/
|
||||
async fetchKlines(
|
||||
symbol: string,
|
||||
startTime: number,
|
||||
limit?: number,
|
||||
endTime?: number,
|
||||
): Promise<Kline[]> {
|
||||
const effectiveLimit = limit ?? this.config.defaultLimit;
|
||||
switch (this.exchange) {
|
||||
case "binance":
|
||||
return fetchBinanceKlines(symbol, startTime, endTime, effectiveLimit);
|
||||
// TODO: 新增交易所在此添加 case
|
||||
// case "okx":
|
||||
// return fetchOkxKlines(symbol, interval, startTime, endTime, effectiveLimit);
|
||||
default:
|
||||
throw new Error(
|
||||
`[Client] 不支持的交易所: "${this.exchange}"，` +
|
||||
`当前仅支持: binance`,
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
async fetchMarkets(): Promise<MarketInfo[]> {
|
||||
// TODO: 各交易所实现
|
||||
return [];
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user