Reusable Lambda function to copy files on S3

As part of the legacy sites migration we need to be able to copy files from previous S3 buckets into the new location. To optimize the process, the code will allow to process multiple files.

Deployment

As of now we don't have an automated process to deploy lambda functions. You need to run npm install locally in order to upload the files required for the function to run.

Development

We suggest using docker to develop and test your lambda function. You can run the following command to get started.

docker run -it --rm \
  -v $(pwd):/app \
  -w /app \
  node:20-alpine /bin/ash

Demo Payload

Snigle event

{
  "sourceBucket":"vagrantschoolfiles",
  "destinationBucket":"vagrantschoolfiles",
  "fileKey":"12/08cc6a7d.png",
  "destinationKey":"12-copy/single-08cc6a7d.png",
}

Multiple Files

[
  {
    "sourceBucket":"vagrantschoolfiles",
    "destinationBucket":"vagrantschoolfiles",
    "fileKey":"12/08cc6a7d.png"
  },
  {
    "sourceBucket":"vagrantschoolfiles",
    "destinationBucket":"vagrantschoolfiles",
    "fileKey":"12/08cc6a7d.png",
    "destinationKey":"12-copy/08cc6a7d.png",
  }
]