gateway_koa_ts/src/middlewares/logs.ts

import { Context, Next } from 'koa';
import { InterfaceLogger, commonInfo, output } from '@/plugins/logger';

export default (logger: InterfaceLogger) => {
  const loggerMiddleware = async(ctx, next) => {
    const $log = logger(ctx)
    ctx.$log = $log;
    const a = Date.now()
    await next();
    const b = Date.now()
    if (ctx.response && ctx.status < 400) {
      const commonInfo: commonInfo = {
        ip: ctx.ip,
        time: b - a
      };
      if (ctx.request.body) {
        commonInfo.params = ctx.request.body;
      };
      $log.info(output(ctx, null, commonInfo))
    }
    else {
      ctx.throw(ctx.status, ctx.response);
    }
  }
  return async(ctx: Context, next: Next) => {
    // 静态文件不处理
    const isApi = /^\/api/.test(ctx.url);
    if (!isApi) {
      await next();
      return;
    };
    return loggerMiddleware(ctx, next).catch(error => {
      const { body, status = 500, message } = error;
      const errorText = `res: ${JSON.stringify({ status, message, body })}`;
      ctx.$log.error(errorText);
      ctx.status = status
    });
  };
};