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Lambda → S3

lambda-s3

Invoking the Lambda function via AWS Console or AWS CLI to either create an order, get the object data, or delete the object from the S3 Bucket.

Invoking Lambda function via AWS Console

  1. Go to Lambda → Lambda Function → Test tab
  2. Update the Event JSON textarea field (see sample payload)
  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 '{"action": "put", "key": "sample-1.json", "quantity": 1, "order": { "referenceId": "SMPLORDR-1234567890", "item": [{ "id": "SMPLITM-12345", "name": "Sample Item", "price": 1234.50 }]}
    }' \
    --cli-binary-format raw-in-base64-out \
    response.json

Sample Payload

  • Create a new object

    {
      "action": "put",
      "key": "sample-1.json",
      "quantity": 1,
      "order": {
        "referenceId": "SMPLORDR-1234567890",
        "item": [{
            "id": "SMPLITM-12345",
            "name": "Sample Item",
            "price": 1234.50
        }]
      }
    }
  • Retrieve object data

    {
      "action": "get",
      "key": "sample-1.json"
    }
  • Delete object

    {
      "action": "delete",
      "key": "sample-1.json"
    }

AWS CDK API / Developer Reference

AWS SDK v2 API / Developer Reference

AWS Documentation Developer Guide

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/lambda/lambda-s3$ make init
    
    # With "profile" parameter
    dev@dev:~:aws-cdk-samples/lambda/lambda-s3$ make init profile=[profile_name]
  2. Deploy the project.

    # Without passing "profile" parameter
    dev@dev:~:aws-cdk-samples/lambda/lambda-s3$ make deploy
    
    # With "profile" parameter
    dev@dev:~:aws-cdk-samples/lambda/lambda-s3$ make deploy profile=[profile_name]