How to setup Serverless server on AWS (RESTful APIs)?

Prerequisite

- Register an AWS account

Note: AWS has given a very details step by step guide. This is for my own note taking and reference

Create a New REST API

• Login to AWS management console, select "API Gateway" in the "Networking & Content Delivery" section.
• Click on "Get Started" button
• Select "New API" and enter "BeezRydes" in the "API name" field
• Select "Edge Optimized" in the "Endpoint Type" field.
• Click "Create API" button

Create a Cognito User Pools Authorizer

• Select "Authorizers in the left menu

• Select "Create New Authorizer" button
• Enter "BeezRydes" in the "Name" field
• Select "Cognito" for the "Type" field
• Enter "BeezPool" in the "Cognito User Pool" field
• Enter "Authorization" in the "Token Source" field
• Click on "Create" link

Verify your authorizer configuration

• Browse to the /ride.html, please refer to screenshot below. Copy the token.
  
   
• Back to the "Authorizers" page, click on the "Test" link
  
  
• Paste the authorization code into "Test Authorizer" page
  
  
• Click on the "Test" button, Response code: 200 us returned

Create a new resource and method

• Click on the "Resources" in the left menu
• Click on the "Actions" button, follow by "Create Resource" option
• Enter "ride" in the "Resource Name" field, the "Resource Path" is auto populated as "ride"
• Ensure the "Ensure API Gateway CORS" checkbox is checked
• Click on the "Create Resource" button
• Click on the "Actions" button, follow by "Create Method" option
• Select "POST" in the OPTIONS dropdown, click the checkmark afterwards.
• Select "Lambda Function" in the "Integration type" field
• Check the "Use Lambda Proxy integration" check box
• Enter the name of the function you created in the previous module, RequestUnicorn, for Lambda Function.
• Click on "Save" button
• Click on the "Method Request" 
• Click on "Edit" icon next to the "Authorization" field
• Select "BeezRydes Cognito user pool authorize", follow by the checkmark
  

Deploy Your API

• Click on the "Actions" button, follow by "Deploy API" option
• Select "[New Stage]" in the "Deployment Stage" field.
• Enter "prod" in the "Stage name" field
• Click on the "Deploy" button
• Please take note of the "Invoke URL", "https://1g4tkvr1pj.execute-api.ap-southeast-1.amazonaws.com/prod"

Update the Website Config

• Open the config.js file in a text editor
• Update the invokeUrl setting under the api key in the config.js file.

window._config = {
    cognito: {
        userPoolId: 'XX-XXXXXXXXX-X_XXXXXXXXX', // e.g. us-east-2_uXboG5pAb
        userPoolClientId: 'XXXXXXXXXXXXXXXXXXXXXXXXXX', // e.g. 25ddkmj4v6hfsfvruhpfi7n4hv
        region: 'XX-XXXXXXXXX-X' // e.g. us-east-2
    },
    api: {
        invokeUrl: 'https://1g4tkvr1pj.execute-api.ap-southeast-1.amazonaws.com/prod' 
    }
};

• In the AWS Management Console, choose Services then select S3 under Storage.
• Navigate to the website bucket and then browse to the js key prefix.
• Upload the config.js file

Validate your implementation

• Visit /rides.html page, for example, "http://beez-firstname-lastname.s3-website-ap-southeast-1.amazonaws.com/signin.html"
• Sign in page is displayed. Login with the registered user in thee previous tutorial.
• Click on the map follow by "Request Unicorn" web service, the "Unicorn" will appear on the map as shown in the screenshot below