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S3, SNS, Lambda Integration

This AWS CDK configuration sets up an automated workflow to trigger a specific Lambda function based on the prefix of files uploaded to Amazon S3. Using the SNS service with a filter policy, it directs events to the appropriate Lambda function efficiently.

Get Started

  1. Install AWS CDK and Bootstrap Your AWS Account in a Specific Region

    npm install -g aws-cdk
cdk bootstrap

  2. Create a .env File with Your AWS Account ID

    AWS_ACCOUNT_ID=YOUR_ACCOUNT_ID

  3. Install Dependencies

    1. Run the following command in the project root to install all dependencies:

      yarn

    2. Then navigate to the functions folder to install the required node modules for Lambda functions:

      cd ./functions yarn

  4. Deploy to AWS

    • Use this command to deploy all stacks to AWS:

      cdk deploy --all

Try it out

After running the above commands, an S3 bucket will be created. Upload a file to one of the designated folders (e.g., folder1 or folder2). Depending on the folder, the corresponding Lambda function (e.g., lambda1 or lambda2) will be triggered automatically.