Geminator

Run bundle lock --update=<gem> --conservative in an AWS Lambda and commit it back on a dedicated branch.

• Provides an AWS Lambda Layer to add Bundler
• Creates branch geminator if not present
• Runs bundle lock update for provided gem
• Creates commit when changes are present
• Works with Github / Gitlab

NB: Doesn't work properly with Bundler Ruby Version, since AWS Lambda just has Ruby 2.5.0 as runtime right now.

Getting started

Requires:

• AWS CLI
• AWS CDK
• Docker
• Nodejs
• Typescript

npm install -g aws-cdk
aws ssm put-parameter --name /CDK/GithubToken --type String --overwrite --value <GITHUB_ACCESS_TOKEN>
yarn install
yarn run build-layer
yarn run build
cdk deploy

GraphQL API

Queries

There's an AppSync API which allows querying for outdated and upgradeable gems.

Mutations

And then there's a mutation to upgrade a single Gem for a given repository.

Configuration

Lambda Envs

• WORKING_BRANCH (defaults to geminator)
• GIT_PROVIDER (either github or gitlab)
• PRIVATE_TOKEN (private access token passed in via the AWS Parameter Store. Expected under /CDK/GitlabToken or /CDK/GithubToken)

Useful commands

• npm run build compile typescript to js
• npm run watch watch for changes and compile
• cdk deploy deploy this stack to your default AWS account/region
• cdk diff compare deployed stack with current state
• cdk synth emits the synthesized CloudFormation template