🦋 Release package updates

[guardian-ci]

This PR was opened by the Changesets release GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated.

Releases

@guardian/cdk@59.5.0

Minor Changes

• f4e2a7c: feat(experimental-ec2-pattern): Pattern to deploy ASG updates w/CFN

  Included in this update is a new experimental pattern GuEc2AppExperimental, which can be used in place of a GuEc2App:

  import { GuEc2AppExperimental } from "@guardian/cdk/lib/experimental/patterns/ec2-app";

  This pattern will add an AutoScalingRollingUpdate policy to the autoscaling group. This allows application updates to be performed like a standard CloudFormation update, and using the custom logic provided by Riff-Raff's autoscaling deployment type is unnecessary.

  This experimental pattern has few requirements.

  Add the build number to the application artifact

  This change requires versioned artifacts.

  The easiest way to achieve this is by adding the build number to the filename of the artifact:

  import { UserData } from "aws-cdk-lib/aws-ec2";
  // Use a GitHub Actions provided environment variable
  const buildNumber = process.env.GITHUB_RUN_NUMBER ?? "DEV";
  
  const userData = UserData.forLinux();
  userData.addCommands(`aws s3 cp s3://dist-bucket/path/to/artifact-${buildNumber}.deb /tmp/artifact.deb`);
  userData.addCommands(`dpkg -i /tmp/artifact.dep`);

  riff-raff.yaml

  The riff-raff.yaml file should remove the deploy action of the autoscaling deployment type. Though including it shouldn't break anything, it would result in a longer deployment time as instance will be rotated by both CloudFormation and Riff-Raff's custom logic.

  The uploadArtifacts step of the autoscaling deployment type should still be included, with the cloud-formation deployment type depending on it. This step uploads the versioned artifact to S3.

  [!TIP] An auto-generated riff-raff.yaml file meets this requirement.