In this instalment of “AWS via Haskell”, we’ll look at how to perform basic tasks with S3. This follows on from my previous post in which I talked about DynamoDB.

Part 1: Prerequisites

Firstly, you’ll need access to S3. There are several options:

• Create an AWS account and use the real S3 service in the cloud: you can start with the free tier and go from there
• Install localstack or similar: note, however, that you may occasionally encounter compatibility issues with these mock services

Part 2: aws-via-haskell.cabal: the dependencies

You’ll see that our s3-app target depends on the following

• amazonka
• amazonka-s3
• base
• bytestring
• conduit-extra
• lens
• resourcet
• text

Part 3: AWSInfo.hs: helper functions

The AWSInfo module provided here extracts some of the helper functions from my previous post and generalizes them to all AWS services.

Part 4: Main.hs: the code

This program demonstrates how to:

• Create a bucket
• List buckets
• Put objects
• Get objects
• List objects

Part 5: The full working demo project

I’ve gathered this all together into this buildable project. As always, I like to build using Stack.

Part 6: Related posts

• Part 1: DynamoDB
• Part 3: SQS
• Part 4: SimpleDB
• Part 5: Lambda
• Part 6: EC2
• Part 7: SSM

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