README.md

Lambda → EventBridge Event Bus → EventBridge Rule → API Destination

Invoking the first Lambda function via AWS Console or AWS Console to send a custom event to the EventBridge Bus. The API destination will be triggered with an EventBridge Rule that receives an event from an EventBridge Event Bus. You can create a custom event bus to receive events from your custom applications, or it can receive events from applications and services created by AWS SaaS partners.

NOTE: Update the events Connection and Destination configuration on the event-bridge-api-destination-stack.ts file.

Invoking Lambda function via AWS Console

1. Go to Lambda → Lambda Function → Test tab
2. Update the Event JSON textarea field to {}
3. Click on the Test button in the upper right corner

Invoking Lambda function via AWS CLI

1. Use the following command and replace the placeholder lambda_function_name with the actual Lambda function name

   aws lambda invoke \
   --function-name lambda_function_name \
   --payload '{}' \
   response.json

Sample Payload sent

{
  "version": "0",
  "id": "123d4567-b891-0e11-b1ed-c2b13141516f",
  "detail-type": "alarm",
  "source": "trigger:alarm",
  "account": "123456789010",
  "time": "2023-05-08T03:51:54Z",
  "region": "us-east-1",
  "resources": [],
  "detail": {
    "request_id": "123d4567-e8ed-9d1d-a011-f121f31415b1",
    "source": "arn:aws:lambda:us-east-1:123456789010:function:lambdaFn",
    "message": "This is a sample alarm message",
    "timestamp": "2023-05-08 03:51:54"
  }
}

AWS CDK API / Developer Reference

• AWS Lambda
• Amazon EventBridge
• Event Targets for Amazon EventBridge

AWS SDK v2 API / Developer Reference

• AWS Lambda Events
• Amazon EventBridge
• Getting Started with the AWS SDK for Go V2

AWS Documentation Developer Guide

• API destinations
• Using EventBridge
• What is Amazon EventBridge
• Amazon EventBridge event buses
• Creating an Amazon EventBridge event bus
• Sending and receiving Amazon EventBridge events between event buses in the same account and Region

Useful commands

• npm run build compile typescript to js
• npm run watch watch for changes and compile
• npm run test perform the jest unit tests
• cdk deploy deploy this stack to your default AWS account/region
• cdk diff compare deployed stack with current state
• cdk synth emits the synthesized CloudFormation template

Deploy

Using make command

1. Install all the dependencies, bootstrap your project, and synthesized CloudFormation template.

   # Without passing "profile" parameter
   dev@dev:~:aws-cdk-samples/event-bridge/event-bridge-api-destination$ make init
   
   # With "profile" parameter
   dev@dev:~:aws-cdk-samples/event-bridge/event-bridge-api-destination$ make init profile=[profile_name]

2. Deploy the project.

   # Without passing "profile" parameter
   dev@dev:~:aws-cdk-samples/event-bridge/event-bridge-api-destination$ make deploy
   
   # With "profile" parameter
   dev@dev:~:aws-cdk-samples/event-bridge/event-bridge-api-destination$ make deploy profile=[profile_name]