Changelog

v2.1.0

• sample .env file to indicate required environment variables
• switch to truly private variables, instead of TypeScript modifiers
• CustomResponse interface includes the namespace now

v2.0.0

Core

• upgrade to latest NestJS version(v7)
• folder structure update
• use cross-env to set the NODE_ENV for cross OS support

Modules

• refactor utils to simply custom-response
• CustomResponse interface is a generic now
• new custom-response status WARNING = 'warning'
• config.service will use now process.cwd() istead of a relative path
• config.service will return the values from .env files or from process.env
• database.module will receive each entity inside the entities instead of 'dist/**/*.entity{.ts,.js}'

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Explanation

For a better understanding, check out this article.

Preparation

• install the desired database, this example is made with MariaDB link to a youtube tutorial

• install Pachet Sender (like Postman for TCP) download link

• download the code and run npm i

Write your .env variables

Now is time to write your configuration for this project. Create two files: .env.development and .env.test.

! Both will be ignored with .gitignore

! In production instead of these two, create a new file on your server named .env.production

This is an example for .env.development ! Replace with your config

DB_SERVER_PORT=3306
DB_SERVER_HOST=localhost
DB_SERVER_USERNAME=root
DB_SERVER_PASSWORD=root
DATABASE=users

ERROR_CODE_NAMESPACE=users-microservice

Microservice Port

:8875

Response Format

{
  "status":ResponseStatus
  "data":any -> '' when no data is found
  "error":CustomError
}

ResponseStatus - "success" or "fail"

CustomError - consist of 3 parts: an error code, a message and a namespace. Codes are universal, but messages can vary. Here is the error JSON payload:

{
  "code":number,
  "msg":string || string[]
  "namespace":string
}

Error codes

10xx - General Server or Network issues

1000 UNKNOWN

• An unknown error occured while processing the request.

1001 DATABASE_ERROR

• An unknown error occured on database.

11xx - Request issues

1100 BAD_PARAMETERS

• Bad parameters send to endpoint
• The validation pipe will return the error as message