Class: StackMaster::ParameterResolvers::LatestContainer

Inherits:
Resolver
  • Object
show all
Defined in:
lib/stack_master/parameter_resolvers/latest_container.rb

Instance Method Summary collapse

Methods inherited from Resolver

array_resolver

Constructor Details

#initialize(config, stack_definition) ⇒ LatestContainer

Returns a new instance of LatestContainer.



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# File 'lib/stack_master/parameter_resolvers/latest_container.rb', line 6

def initialize(config, stack_definition)
  @config = config
  @stack_definition = stack_definition
end

Instance Method Details

#resolve(parameters) ⇒ Object 



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# File 'lib/stack_master/parameter_resolvers/latest_container.rb', line 11

def resolve(parameters)
  if parameters['repository_name'].nil?
    raise ArgumentError, "repository_name parameter is required but was not supplied"
  end

  @region = parameters['region'] || @stack_definition.region
  ecr_client = Aws::ECR::Client.new(region: @region)

  images = fetch_images(parameters['repository_name'], parameters['registry_id'], ecr_client)

  unless parameters['tag'].nil?
    images.select! { |image| image.image_tags.any? { |tag| tag == parameters['tag'] } }
  end
  images.sort! { |image_x, image_y| image_y.image_pushed_at <=> image_x.image_pushed_at }

  return nil if images.empty?

  latest_image = images.first

  # aws_account_id.dkr.ecr.region.amazonaws.com/repository@sha256:digest
  "#{latest_image.registry_id}.dkr.ecr.#{@region}.amazonaws.com/#{parameters['repository_name']}@#{latest_image.image_digest}"
end