Provides simple UI for EC2 instances in an AWS account to be manually started(or extended) for a 4 hour uptime window. This is similar to the kubernetes pod-reaper but simpler.

Front end is using Elm which communicates via JSON messages with the back end which is a Micronaut service written in Kotlin.

Only EC2 instances with a "reaper-enable" tag set to "true" will be displayed in the UI. When an instance is started its "reaper-timestamp" tag will be set to that moment (in UTC milliseconds). When an instance is "extended" that timestamp gets reset. If 4 hours elapses with no extensions the instance will be stopped.

To build and run the docker container, use make run then go to http://localhost:8080 for the UI.

Credentials for AWS access will be looked up in the default way by the SDK (and your local credentials at ~/.aws will be mapped into the container at /root/.aws). See https://docs.aws.amazon.com/sdk-for-java/v2/developer-guide/credentials.html

1. Run the back end in a container using make backend-dev
2. Run the front end in a container using make frontend-dev
3. Go to http://localhost:3000 in your browser to test. The UI will automatically reload when front end code is changed.

For unit tests use make frontend-test and make backend-test.

• Front end is written in Elm
• Using Create Elm App
• Icon generated with https://favicon.io/favicon-generator/
• Back end using Micronaut and Kotlin