Clinic REST-API

Use following things

• Node.js
• AWS Lambda
• AWS API Gateway
• AWS APIGateway API Key (For Restrict API Access, also can use Cognito)
• AWS DynamoDB
• AWS CodePipeline
• AWS CodeBuild
• AWS IAM Roles & Policy
• Github Repository

See Postman Collection you can Import Collection via link for Invoke APIs. Colection Link - https://www.getpostman.com/collections/7e39f4cd409ca8296420

Architectural Diagram

Create Lambda functions

Create 4 Lambda functions with permisson with DynamoDB

Add following permisson to IAM Role

• AmazonDynamoDBFullAccess
• CloudWatchLogsFullAccess

Create API Gateway

Create AWS API GAteway and add following routes

Create DynamoDB Tables

Create 4 dynamodb tables for

• user
• admin
• doctor
• appointments

Create AWS CodeBuild Build Project

For CICD pipeline create a CodeBuild Project

CodeBuild Service role add following code part

{
  "Effect": "Allow",
  "Action": [
      "lambda:AddPermission",
      "lambda:RemovePermission",
      "lambda:CreateAlias",
      "lambda:UpdateAlias",
      "lambda:DeleteAlias",
      "lambda:UpdateFunctionCode",
      "lambda:UpdateFunctionConfiguration",
      "lambda:PutFunctionConcurrency",
      "lambda:DeleteFunctionConcurrency",
      "lambda:PublishVersion"
  ],
  "Resource": [
    "arn:aws:lambda:{{region}}:{{accountno}}:function:{{user-bucket}}",
    "arn:aws:lambda:{{region}}:{{accountno}}:function:{{admin-bucket}}",
    "arn:aws:lambda:{{region}}:{{accountno}}:function:{{doctor-bucket}}",
    "arn:aws:lambda:{{region}}:{{accountno}}:function:{{appointment-bucket}}"
]
}

Create buildspec.yml, add content and push to repository

Create CodePipeline

Create AWS CodePipeline for CICD process

Deploy API Gateway stage

We can create 4 stages for Dev, QA, UAT, Prod

Check API using Postman or Curl

Response

Test Result

curl {{Invoke-URL}} Ex: curl https://dv5rqng9s0.execute-api.us-east-2.amazonaws.com/Development/admins

You can add Postman collection Postman Collection

Add API key : x-api-key(Q2gZ5ArllY8bWlqSzA0eS6JmxMibVYUU8kgca1RU)

Thank You!