34 lines
1.0 KiB
TypeScript
34 lines
1.0 KiB
TypeScript
import {
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Injectable,
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NestInterceptor,
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ExecutionContext,
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CallHandler,
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Logger,
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} from '@nestjs/common';
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import { Request } from 'express';
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import { Observable } from 'rxjs';
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import { tap } from 'rxjs/operators';
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// import dayjs = require('dayjs');
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// dayjs().format('{YYYY} MM-DDTHH:mm:ss')
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@Injectable()
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export class LoggingInterceptor implements NestInterceptor {
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private readonly logger = new Logger('request'); // 实例化日志记录器
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intercept(context: ExecutionContext, next: CallHandler): Observable<any> {
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const start = Date.now(); // 请求开始时间
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return next.handle().pipe(
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tap(() => {
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// 调用完handle()后得到RxJs响应对象，使用tap可以得到路由函数的返回值
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const host = context.switchToHttp();
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const request = host.getRequest<Request>();
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// 打印请求方法，请求链接，处理时间和响应数据
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this.logger.log(
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`${request.method} ${request.url} ${Date.now() - start} ms`,
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);
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}),
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);
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}
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}
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