Class: Jets::Cfn::TemplateBuilders::ParentBuilder

Inherits:
Object
  • Object
show all
Includes:
AwsServices, Interface
Defined in:
lib/jets/cfn/template_builders/parent_builder.rb

Instance Method Summary collapse

Methods included from AwsServices

#cfn, #lambda, #s3, #s3_resource, #stack_exists?, #stack_in_progress?

Methods included from Interface

#add_output, #add_parameter, #add_resource, #build, #post_process_template, #template, #text, #write

Constructor Details

#initialize(options = {}) ⇒ ParentBuilder

Returns a new instance of ParentBuilder.



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# File 'lib/jets/cfn/template_builders/parent_builder.rb', line 8

def initialize(options={})
  @options = options
  @template = ActiveSupport::HashWithIndifferentAccess.new(Resources: {})
end

Instance Method Details

#add_api_gateway ⇒ Object

Each shared stacks has different logic. Handle in ugly case statement until we see the common patterns between them. TODO: clean up the add_shared_stack logical after we figure out the common interface pattern



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# File 'lib/jets/cfn/template_builders/parent_builder.rb', line 74

def add_api_gateway
  path = "#{Jets.config.project_namespace}-api-gateway.yml"
  map = Jets::Cfn::TemplateMappers::ApiGatewayMapper.new(path, @options[:s3_bucket])

  add_resource(map.logical_id, "AWS::CloudFormation::Stack",
    Properties: { TemplateURL: map.template_url }
  )

  add_output(map.logical_id, Value: "!Ref #{map.logical_id}")
end

#add_api_gateway_deployment ⇒ Object 



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# File 'lib/jets/cfn/template_builders/parent_builder.rb', line 85

def add_api_gateway_deployment
  path = "#{Jets.config.project_namespace}-api-gateway-deployment.yml"
  map = Jets::Cfn::TemplateMappers::ApiGatewayDeploymentMapper.new(path, @options[:s3_bucket])
  add_resource(map.logical_id, "AWS::CloudFormation::Stack",
    Properties: {
      TemplateURL: map.template_url,
      Parameters: map.parameters
    },
    DependsOn: map.depends_on
  )
end

#add_child_resources ⇒ Object 



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# File 'lib/jets/cfn/template_builders/parent_builder.rb', line 40

def add_child_resources
  expression = "#{Jets::Naming.template_path_prefix}-*"
  # IE: path: #{Jets.build_root}/templates/demo-dev-2-comments_controller.yml
  Dir.glob(expression).each do |path|
    next unless File.file?(path)
    next if path =~ /api-gateway/ # treated specially

    # Example of produced code:
    #
    #   map = Jets::Cfn::TemplateMappers::ControllerMapper.new(path, s3_bucket)
    #   map = Jets::Cfn::TemplateMappers::JobMapper.new(path, s3_bucket)
    #   map = Jets::Cfn::TemplateMappers::FunctionMapper.new(path, s3_bucket)
    #
    mapper_class_name = File.basename(path, '.yml').split('_').last
    mapper_class_name = mapper_class_name.classify
    mapper_class = "Jets::Cfn::TemplateMappers::#{mapper_class_name}Mapper".constantize # ControllerMapper or JobMapper
    map = mapper_class.new(path, @options[:s3_bucket])

    # map.logical_id example: PostsController, HardJob, Hello, HelloFunction
    add_resource(map.logical_id, "AWS::CloudFormation::Stack",
      TemplateURL: map.template_url,
      Parameters: map.parameters,
    )
  end

  if @options[:stack_type] == :full and !Jets::Router.routes.empty?
    add_api_gateway
    add_api_gateway_deployment
  end
end

#add_minimal_resources ⇒ Object 



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# File 'lib/jets/cfn/template_builders/parent_builder.rb', line 26

def add_minimal_resources
  # variables for minimal-stack.yml
  path = File.expand_path("../templates/minimal-stack.yml", __FILE__)
  variables = {
    policy_name: "lambda-#{Jets.config.project_namespace}-policy",
    role_name: "lambda-#{Jets.config.project_namespace}-role",
  }
  rendered_result = Jets::Erb.result(path, variables)
  minimal_template = YAML.load(rendered_result)

  # minimal_template = YAML.load(IO.read(path))
  @template.deep_merge!(minimal_template)
end

#compose ⇒ Object

compose is an interface method



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# File 'lib/jets/cfn/template_builders/parent_builder.rb', line 14

def compose
  puts "Building parent template."

  add_minimal_resources
  add_child_resources unless @options[:stack_type] == :minimal
end

#template_path ⇒ Object

template_path is an interface method



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# File 'lib/jets/cfn/template_builders/parent_builder.rb', line 22

def template_path
  Jets::Naming.parent_template_path
end