Pre-signed URLs for Amazon S3 Uploads

This AWS CloudFormation template provides a solution for using pre-signed URLs to upload files to Amazon S3. The solution consists of an S3 bucket, a Lambda function, a DynamoDB table, and an API Gateway to expose the Lambda function as an HTTP API.

Prerequisites

• An AWS account with the necessary permissions to create the resources defined in this template.
• A basic understanding of AWS CloudFormation and AWS Lambda.

Getting Started

To use this template, follow these steps:

1. Create an S3 bucket and replace YOUR_BUCKET_NAME in the CloudFormation template with your bucket name.
2. Package and upload your Lambda function code to your S3 bucket, and replace YOUR_LAMBDA_FUNCTION_CODE.zip in the CloudFormation template with the name of your Lambda function code file.
3. Replace YOUR_LAMBDA_FUNCTION_NAME in the CloudFormation template with the name of your Lambda function.
4. Create a DynamoDB table and replace YOUR_TABLE_NAME in the CloudFormation template with your table name.
5. Replace YOUR_INDEX_NAME in the CloudFormation template with a unique name for your DynamoDB global secondary index.
6. Deploy the CloudFormation template to create the necessary resources.

Resources

The following resources are created by this CloudFormation template:

• S3 bucket: An S3 bucket that is used to store uploaded files.
• Lambda function: A Lambda function that generates pre-signed URLs for S3 uploads and stores upload metadata in a DynamoDB table.
• DynamoDB table: A DynamoDB table that is used to store upload metadata.
• IAM role: An IAM role that grants the Lambda function permissions to access S3 and DynamoDB.
• API Gateway: An API Gateway that exposes the Lambda function as an HTTP API.

License

This project is licensed under the terms of the MIT license. See LICENSE for more information.