Jets

This example shows to deploy a Jets application with codebuild to AWS Lambda.

Here’s the project DSL.

.cody/project.rb:

github_url("https://github.com/tongueroo/jets-cody-demo")
linux_image("aws/codebuild/amazonlinux2-x86_64-standard:3.0")
environment_variables(
  JETS_ENV: Cody.env,
  JETS_TOKEN: ssm("/jets-cody-demo/#{Cody.env}/CODY_JETS_TOKEN"),
)

The .cody/project.rb uses a Docker image that has Ruby, Node, and Yarn already installed. If you prefer to use another image, update the linux_image setting, and update your buildspec.yml accordingly. For example, you may need to install the necessary packages.

Here’s the buildspec:

.cody/buildspec.yml

# Build Specification Reference for CodeBuild: https://docs.aws.amazon.com/codebuild/latest/userguide/build-spec-ref.html

version: 0.2

phases:
  install:
    commands:
      - yum install -y rsync zip
      - curl -s -o- -L https://yarnpkg.com/install.sh | bash
    runtime-versions:
      nodejs: latest
      ruby: 2.7
  build:
    commands:
      - bash -c 'if [ "$CODEBUILD_BUILD_SUCCEEDING" == "0" ]; then exit 1; fi'
      - ruby --version
      - yarn install --check-files
      - bundle
      - export JETS_AGREE=yes
      - bundle exec jets configure $JETS_TOKEN
      - bundle exec jets deploy $JETS_ENV

And here are the IAM permissions required as described in Jets Minimal IAM Deploy Policy.

.cody/role.rb:

iam_policy(
  "apigateway",
  "cloudformation",
  "dynamodb",
  "events",
  "iam",
  "lambda",
  "logs",
  "route53",
  "s3",
  "ssm",
)

Here’s also Github repo with CodeBuild examples with Jets: tongueroo/jets-cody-demo. The example on the master branch is a similar simple approach with 1 CodeBuild project.

You may be interested in the separate-unit-and-deploy branch. The example shows how to set up 2 separate CodeBuild projects. Some advantages:

• The projects are decoupled and you can run them separately.
• Only the deploy project requires IAM access to create the AWS resources.

Create CodeBuild Project

To create the CodeBuild project via CloudFormation run:

cody deploy demo

This creates the CodeBuild project as well as the necessary IAM role.

Start Build

To start a build:

cody start demo

You can also start a build with a specific branch. Remember to git push your branch.

cody start demo -b mybranch

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