AWS AppConfig 설정

AWS AppConfig에서 기능 플래그 검색

import {
  AppConfigDataClient,
  BadRequestException,
  GetLatestConfigurationCommand,
  StartConfigurationSessionCommand,
} from "@aws-sdk/client-appconfigdata";

const client = new AppConfigDataClient({});
let existingToken: string;

const getToken = async (): Promise<string> => {
  const getSession = new StartConfigurationSessionCommand({
    ApplicationIdentifier: process.env.APP_CONFIG_APP_IDENTIFIER,
    ConfigurationProfileIdentifier:
      process.env.APP_CONFIG_CONFIG_PROFILE_IDENTIFIER,
    EnvironmentIdentifier: process.env.APP_CONFIG_ENVIRONMENT_IDENTIFIER,
  });
  const sessionToken = await client.send(getSession);
  return sessionToken.InitialConfigurationToken || "";
};

const featureFlag = async (flag: string): Promise<boolean> => {
  if (!existingToken) {
    existingToken = await getToken();
    console.log(existingToken);
  }
  try {
    const command = new GetLatestConfigurationCommand({
      ConfigurationToken: existingToken,
    });
    const response = await client.send(command);
    let flags: any = {};
    if (response.Configuration) {
      let str = "";
      for (let i = 0; i < response.Configuration.length; i++) {
        str += String.fromCharCode(response.Configuration[i]);
      }
      const allFlag = JSON.parse(str);
      console.log(allFlag);
      flags = Object.assign({}, allFlag);
    }
    return Boolean(flags[flag]?.enabled);
  } catch (err) {
    if (err instanceof BadRequestException) {
      existingToken = await getToken();
      console.log(existingToken);
      // recall
      return featureFlag(flag);
    } else {
      throw err;
    }
  }
};

export default featureFlag;

베르비안톨레오 / 기능 플래그

AWS AppConfig를 사용하여 기능 플래그 탐색

기능 플래그

환경 변수

AWS_REGION="ap-southeast-1"
AWS_ACCESS_KEY_ID=""
AWS_SECRET_ACCESS_KEY=""
APP_CONFIG_APP_IDENTIFIER=""
APP_CONFIG_CONFIG_PROFILE_IDENTIFIER=""
APP_CONFIG_ENVIRONMENT_IDENTIFIER=""

시도하는 방법?

1. Setup Environment
2. Modify demo/index.ts with your flag.
3. Run npm install or yarn
4. Run yarn dev or npm run dev

특허

MIT

MIT License
Copyright (c) 2022 Bervianto Leo Pratama

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED

Note: Please don't use this for production. This library is still in heavy development and experimental. I want to improve this library before becoming production-ready.

내 도서관에 전화하는 방법?

• Promise then/catch

import featureFlag from '@berviantoleo/feature-flag';

featureFlag('try_feature_flag').then((result) => {
  console.log(result);
});

async/await 방식도 사용할 수 있습니다.

예제 출력

Welcome to contribute to my small library/project. :) If you have any inputs, feel free to add them here too.

무엇 향후 계획?

.NET용으로 유사한 라이브러리/프로젝트를 만들 예정입니다. 계속 지켜봐주세요!

고맙습니다

출처unsplash