Serverless-golang AWS S3 object create event and replicator example

Serverless boilerplate code for golang with S3 object create event and replicator example

The example shows following steps:

1. Detect object create event with input bucket
2. Copy detected object and duplicate object to new bucket with assigned object name.
3. [optional] you will able to append file extension or rename object name with assign object name.

Buckets

This example replicates objects between two pre-existing S3 buckets (existing: true — the framework attaches a notification to buckets you create yourself; it does not create them). By default the bucket names are account-unique (replicator-input-<awsAccountId> / replicator-output-<awsAccountId>), so create them once per account before deploying:

aws s3 mb s3://replicator-input-<awsAccountId>
aws s3 mb s3://replicator-output-<awsAccountId>

To use different bucket names, set INPUT_BUCKET / OUTPUT_BUCKET environment variables before deploying.

Build & Deploy

Requires Go 1.25+. The function is compiled to a provided.al2023 (arm64) custom-runtime bootstrap and uses the AWS SDK for Go v2.

make build
serverless deploy