705a2f6ea0
- PairType 定义移至 types/kline.ts (spot/um/cm) - Kline 接口新增 type 字段,全链路透传 - klines 5列复合主键 (exchange, symbol, type, interval, time) - 拆出 BinanceFuturesRestClient (USDMClient) - exchanges/index.ts 注册 binance_futures - trading_pairs 唯一约束加 type,种子数据加合约对 - 12个连续聚合视图 SELECT/GROUP BY/INDEX 加 type - 清理 bnkline.ts 废弃代码和 pair.ts 空函数
300 lines
9.1 KiB
Markdown
300 lines
9.1 KiB
Markdown
# 接入 USDT-M 合约数据 — 改造方案(type 字段方案)
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## 设计思路
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**用 `type` 列区分账户类型**,而非 symbol 后缀。`PairType` 枚举已在代码中定义(`'spot' | 'um' | 'cm'`),本次改造将 `type` 从实体层的死代码变成全链路透传的一等字段。
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### 为什么选 type 而非 .P 后缀
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| | `.P` 后缀 | `type` 字段 |
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|---|---|---|
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| symbol 语义 | 污染标识符,BTCUSDT.P 不是交易对名称 | 干净,symbol 与 Binance 官方一致 |
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| 查询 | `WHERE symbol LIKE '%.P'` 不走索引 | `WHERE type = 'um'` 索引友好 |
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| 扩展 | Coin-M 需要 `_PERP` 新后缀规则 | 加 `'cm'` 枚举值即可 |
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| API 调用 | 每次 strip 后缀,容易遗漏 | symbol 原样传入,零变换 |
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| 与已有代码 | 与 TradingPair.type 字段矛盾 | 与已有 PairType、实体定义完全对齐 |
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### Type 枚举
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| type | 说明 |
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|------|------|
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| `spot` | 现货(默认值) |
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| `um` | USDT-M 永续合约 |
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| `cm` | Coin-M 永续合约(预留) |
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### K 线复合主键
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5 列:`(exchange, symbol, type, interval, time)`。`type` 在主键中保证相同 symbol 的现货与合约 K 线不会 PK 冲突。
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---
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## 改动清单
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### 1. 配置层(已完成,无需再改)
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`data/env.yaml`、`data/config/validators.ts`、`data/config/index.ts` 已有 `binance_futures` 段,无需改动。
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---
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### 2. 类型定义(1 文件)
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**`data/types/base.ts`** — Kline 接口加 `type` 字段
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```typescript
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export interface Kline {
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exchange: string;
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symbol: string;
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/** 交易对类型(spot / um / cm) */
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type: PairType; // ← 新增
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interval: KlineInterval;
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openTime: number;
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closeTime: number;
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// ... 其余字段不变
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}
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```
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---
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### 3. 实体层(1 文件)
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**`data/db/entities/kline.entity.ts`** — `type` 从 `@PrimaryColumn` 保持不动(已存在,无需改)。
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`trading-pair.entity.ts` — `type` 列已存在,无需改。
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---
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### 4. REST 客户端(2 文件,核心改动)
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**`data/exchanges/binance/rest.ts`**
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```typescript
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import { MainClient, USDMClient } from "binance";
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// convertBinanceKline 加 type 参数
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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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type: PairType, // ← 新增
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): Kline {
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return {
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exchange: "binance",
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symbol,
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type, // ← 新增
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interval,
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// ... 其余字段不变
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};
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}
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// 现货客户端(已有,加 type = 'spot')
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export class BinanceRestClient extends BaseRestClient {
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readonly exchange = "binance";
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private client = new MainClient({...}, { timeout: 3000 });
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async fetchKlines(symbol, startTime, limit, endTime): Promise<Kline[]> {
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// ...
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return rawKlines.map(k => convertBinanceKline(k, symbol, "1m", "spot"));
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}
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}
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// 合约客户端(新增)
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export class BinanceFuturesRestClient extends BaseRestClient {
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readonly exchange = "binance";
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private client = new USDMClient(
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{ api_key: exchange.binanceFutures.apiKey, api_secret: exchange.binanceFutures.apiSecret },
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{ timeout: 3000 }
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);
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async fetchKlines(symbol, startTime, limit, endTime): Promise<Kline[]> {
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// USDMClient.getKlines() 与 MainClient 同构 12 元组,convertBinanceKline 直接复用
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const rawKlines = await this.client.getKlines({ symbol, interval: "1m", ... });
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return rawKlines.map(k => convertBinanceKline(k, symbol, "1m", "um"));
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}
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}
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```
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**`data/exchanges/index.ts`** — 注册合约客户端
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```typescript
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const registry: Record<string, () => BaseRestClient> = {
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binance: () => new BinanceRestClient(),
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binance_futures: () => new BinanceFuturesRestClient(), // ← 新增
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};
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```
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---
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### 5. 服务层(1 文件)
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**`data/service/kline.ts`**
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```typescript
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const entities = KlineItems.map((item) => {
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const entity = new Kline();
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entity.type = item.type; // ← 新增
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// ... 其余字段映射不变
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});
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await repo.upsert(entities, {
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conflictPaths: ["exchange", "symbol", "type", "interval", "time"], // ← +type
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skipUpdateIfNoValuesChanged: true,
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});
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```
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---
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### 6. 运行脚本(1 文件)
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**`data/run/exchange.ts`** — 按 `pair.type` 选择客户端
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```typescript
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for (const pair of allPairs) {
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const exchangeId = pair.type === 'um' ? 'binance_futures' : 'binance';
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const client = createRestClient(exchangeId);
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// ... 其余逻辑不变
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}
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```
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---
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### 7. SQL 初始化脚本(2 文件)
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**`data/db/init-db/02-init-tables.sql`**
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klines 表:
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```sql
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CREATE TABLE IF NOT EXISTS klines (
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exchange TEXT NOT NULL,
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symbol TEXT NOT NULL,
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type TEXT NOT NULL DEFAULT 'spot', -- 新增
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interval TEXT NOT NULL,
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time TIMESTAMPTZ NOT NULL,
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-- OHLCV ...
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PRIMARY KEY (exchange, symbol, type, interval, time) -- 5 列
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);
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ALTER TABLE klines SET (
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timescaledb.compress,
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timescaledb.compress_segmentby = 'exchange,symbol,type', -- +type
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timescaledb.compress_orderby = 'time DESC'
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);
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```
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trading_pairs 表:
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```sql
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CREATE TABLE IF NOT EXISTS trading_pairs (
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-- ...
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symbol VARCHAR(20) NOT NULL,
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type TEXT NOT NULL DEFAULT 'spot', -- 新增
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-- ...
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CONSTRAINT uq_trading_pairs_exchange_symbol_type UNIQUE (exchange_id, symbol, type) -- +type
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);
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```
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种子数据:
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```sql
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INSERT INTO trading_pairs (exchange_id, symbol, type, base_asset, quote_asset,
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price_precision, quantity_precision, active)
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SELECT e.id, sym.symbol, sym.type, sym.base, sym.quote, 2, 5, TRUE
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FROM exchanges e
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CROSS JOIN (
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VALUES
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('BTCUSDT', 'spot', 'BTC', 'USDT'),
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('ETHUSDT', 'spot', 'ETH', 'USDT'),
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('BNBUSDT', 'spot', 'BNB', 'USDT'),
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('SOLUSDT', 'spot', 'SOL', 'USDT'),
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('BTCUSDT', 'um', 'BTC', 'USDT'),
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('ETHUSDT', 'um', 'ETH', 'USDT')
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) AS sym(symbol, type, base, quote)
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WHERE e.name = 'binance'
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ON CONFLICT (exchange_id, symbol, type) DO NOTHING;
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```
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**`data/db/init-db/03-continuous-aggregates.sql`**
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12 个连续聚合视图,每个改 3 处(SELECT / GROUP BY / INDEX 各加 `type`)。以 `klines_3m` 为例:
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```sql
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CREATE MATERIALIZED VIEW IF NOT EXISTS klines_3m
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WITH (timescaledb.continuous) AS
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SELECT
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time_bucket('3 minutes', time) AS time,
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exchange,
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symbol,
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type, -- 新增
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'3m'::text AS interval,
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FIRST(open, time) AS open,
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-- ...
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FROM klines
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GROUP BY time_bucket('3 minutes', klines.time), exchange, symbol, type -- +type
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WITH NO DATA;
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CREATE INDEX IF NOT EXISTS idx_klines_3m_symbol_time
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ON klines_3m (exchange, symbol, type, time DESC); -- +type
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```
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---
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### 8. service/pair.ts(1 文件,小改)
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`getPairLastBackfillTime` / `updatePairLastBackfillTime` 按 `symbol` 查找时需要限定 `type`,避免现货/合约二义性:
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```typescript
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// 推荐:type 参数可选,默认 'spot' 向后兼容
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export async function getPairLastBackfillTime(symbol: string, type: PairType = 'spot') {
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const pair = await repo.findOneBy({ symbol, type });
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return pair?.last_backfill_time;
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}
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```
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实际调用处(`run/exchange.ts` 中)传 `pair.type`。
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---
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## 改动汇总
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| 文件 | 改动 | 行数 |
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|------|------|------|
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| `data/types/base.ts` | Kline 接口 +type | +1 |
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| `data/db/entities/kline.entity.ts` | 不动(type 已存在) | 0 |
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| `data/exchanges/binance/rest.ts` | 引入 USDMClient,拆现货/合约客户端,convertBinanceKline +type | +50 |
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| `data/exchanges/index.ts` | 注册 binance_futures | +2 |
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| `data/service/kline.ts` | entity.type 赋值,conflictPaths +1 | +3 |
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| `data/run/exchange.ts` | 按 pair.type 选择客户端 | +3 |
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| `data/service/pair.ts` | findOneBy 加 type 参数 | +5 |
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| `data/db/init-db/02-init-tables.sql` | klines +type列+PK+压缩键,trading_pairs +唯一约束+种子数据 | +10 |
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| `data/db/init-db/03-continuous-aggregates.sql` | 12 视图 × 3 处(SELECT/GROUP BY/INDEX) | +36 |
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**共 9 个文件,~110 行净改动。** 不动:配置层、env.yaml。
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---
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## 迁移计划(重建数据库)
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```
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第1步: 修改 SQL DDL
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├── 02-init-tables.sql: klines PK 加 type,trading_pairs 唯一约束加 type
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└── 03-continuous-aggregates.sql: 12 视图 SELECT/GROUP BY/INDEX 加 type
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第2步: 修改代码
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├── types/base.ts: Kline 接口 +type
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├── exchanges/binance/rest.ts: 拆现货/合约客户端
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├── exchanges/index.ts: 注册 binance_futures
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├── service/kline.ts: entity.type + conflictPaths
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├── service/pair.ts: findOneBy 加 type
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└── run/exchange.ts: 按 pair.type 选客户端
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第3步: 重建数据库
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├── docker compose down -v && docker compose up -d (清空数据)
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├── 执行 01 → 02 → 03 SQL 初始化脚本
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└── bun run data/run/exchange.ts 全量回补
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```
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---
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## 注意事项
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- `binance_futures` 的 API Key 需要在 Binance 开通合约交易权限,否则 `USDMClient` 调用会报权限错误。
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- 合约 K 线数量通常多于现货(7×24 交易),回补时间更长。
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- Coin-M 接入只需:`PairType` 已有 `'cm'`,新增 `CoinMClient` 类,种子数据加 `('BTCUSDT', 'cm', ...)` 即可。
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