Rule-validation-API

A simple rule validation API

Author: Fisayo Agboola

Environments

Node version - v12.18.4 (LTS)

This application uses the following technologies:

• nodeJs
• expressJs
• jest
• supertest
• winston

Install all dependencies

npm install

Start the application

npm start

Test the application

npm test

Get Route -

Endpoint {{baseUrl}}/ - method (GET)

Response format

{
    "message": "My Rule-Validation API",
    "status": "success",
    "data": {
        "name": "Amos Burton",
        "github": "@amosburton",
        "email": "[email protected]",
        "mobile": "08069920011",
        "twitter": "@amosb"
    }
}

Post Route -

Endpoint {{baseUrl}}/validate-rule - method (POST)

Payload

{
  "rule": {
    "field": "missions.count",
    "condition": "gte",
    "condition_value": 30
  },
  "data": {
    "name": "James Holden",
    "crew": "Rocinante",
    "age": 34,
    "position": "Captain",
    "missions": {
      "count": 45,
      "successful": 44,
      "failed": 1
    }
  }
}

Response format

{
  "message": "field missions.count successfully validated.",
  "status": "success",
  "data": {
    "validation": {
      "error": false,
      "field": "missions.count",
      "field_value": 45,
      "condition": "gte",
      "condition_value: 30
    }
  }
}

The Design Principles used are:

• Single Responsibility Principle
• Dependency Inversion Principle
• DRY Principle
• KISS Principle
• YAGNI Principle