Amazon Web Services CloudFormation Stack SBT Plugin

An sbt plugin to deploy a CloudFormation stack generated by the project. Create a main class in the project that accepts a file path as its first argument, and write the stack's CloudFormation template to the given file.

Installation and Enabling

Add the following to project/plugins.sbt

addSbtPlugin("com.dwolla.sbt" % "sbt-cloudformation-stack" % "{version-number}")

Then, enable the plugin by adding something like the following to build.sbt:

val app = (project in file(".")).enablePlugins(CloudFormationStack)

Settings

templateJsonFilename

Filename of the generated JSON CloudFormation template.

stackName

Name of the stack. Defaults the normalized name of the project.

stackParameters

List of key-value pairs that will be provided to the stack as parameters. These can accept task or setting values; e.g., S3 bucket and keys from the S3 Publisher plugin.

stackParameters ++= List(
  "S3Bucket" → s3Bucket.value,
  "S3Key" → s3Key.value
)

changeSetName

If supplied, CloudFormation will create a change set to allow stack creates or update to be evaluated before being completed.

Tasks

generate

Runs the main class of the project, passing templateJson as the first argument.

deploy

Creates or updates a CloudFormation stack using the generated JSON template.

Commands

withDeployParameters

Allows certain deploy parameters to be set on the command line, with some input validation. The parameters that will be overridden are as follows:

• awsAccountId must be a 12-digit AWS Account ID

• awsRoleName must match the pattern role/{name}, and the value will be set to {name}

• stackRoleArn will be set to a full ARN if awsAccountId and awsRoleName are set, or to None if either are missing

• deployEnvironment must be one of the values in deployEnvironmentOptions, and will add a stack parameter named using deployEnvironmentParameterName.

  The default deployEnvironmentParameterName is Environment, so setting deployEnvironment to Admin would add a stack parameter named Environment with the value Admin.

Note that all these will be set if the command is invoked. Missing values will be set to None. The parameters can be passed in any order.

For example,

sbt "withDeployParameters 123456789012 role/myRole Admin" deploy

will add a stack parameter Environment → Admin and create or update the stack using the AWS role arn:aws:iam::123456789012:role/myRole.