Nestjs HttpService 錯誤處理與 AxiosRequestConfig 的 validateStatus function

Question

我需要處理使用 HttpService（Nestjs 的 HttpModule）使用外部服務時可能發生的 http 錯誤狀態代碼（例如 401、500 等）。 這是我正在處理的實現：

import { Injectable } from '@nestjs/common';
import { HttpService } from '@nestjs/axios';
import { Logger } from '@nestjs/common';
import { AxiosRequestConfig } from 'axios';
import { catchError, firstValueFrom, map } from 'rxjs';

type Person = {
  name: string;
  lastName: string;
};

@Injectable()
export class PersonService {
  constructor(private httpService: HttpService) {}
  async findPerson(): Promise<Person> {
    const axiosConfig: AxiosRequestConfig = {
      method: 'get',
      url: 'https://service.dns/path/person',
      headers: {
        'Content-Type': 'application/json',
        Authorization: `Bearer ${jwt}`,
      },
      validateStatus: function (status: number) {
        return status === 200;
      },
    };

    const personInstance: Person = await firstValueFrom(
      this.httpService.request(axiosConfig).pipe(
        catchError((e) => {
          Logger.error(e.response.data.errorMessage);
          throw new Error('internal communication error');
        }),
        map((res) => {
          return res.data;
        }),
      ),
    );
    return personInstance;
  }
}

在上面的代碼中，我只需要 function catchError拋出自定義錯誤，但我無法使 function validateStatus觸發catchError的執行。

Answer 1

我已經實現了下一個代碼，以便利用 AxiosRequestConfig 的validateStatus AxiosRequestConfig來滿足我的需求：

import { Injectable } from '@nestjs/common';
import { HttpService } from '@nestjs/axios';
import { Logger } from '@nestjs/common';
import { AxiosRequestConfig } from 'axios';
import { firstValueFrom } from 'rxjs';

type Person = {
  name: string;
  lastName: string;
};

@Injectable()
export class PersonService {
  constructor(private httpService: HttpService) {}
  async findPerson(): Promise<Person> {
    const axiosConfig: AxiosRequestConfig = {
      method: 'get',
      url: 'https://service.dns/path/person',
      headers: {
        'Content-Type': 'application/json',
        Authorization: `Bearer fake_jwt`,
      },
      validateStatus: function (status: number) {
        return status === 200;
      },
    };

    return firstValueFrom(this.httpService.request(axiosConfig))
      .then((res) => res.data)
      .catch((e) => {
        Logger.error(e.errorMessage);
        throw new Error('internal communication error');
      });
  }
}

注意：此代碼處理Promise<AxiosResponse<any>>而不是Observable<AxiosResponse<any>方法