Class: Rake::CloudFormation::Stack

Inherits:
Task
  • Object
show all
Includes:
Rake::CloudFormation, DSL
Defined in:
lib/rake/cloud_formation.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Rake::CloudFormation

#cf

Constructor Details

#initialize(*args) ⇒ Stack

Returns a new instance of Stack.



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# File 'lib/rake/cloud_formation.rb', line 15

def initialize(*args)
  super
  @region = 'us-east-1'
  @parameters = {}
  @capabilities = Set.new
  @notification_arns = Set.new
end

Instance Attribute Details

#capabilities ⇒ Object (readonly)

Returns the value of attribute capabilities.



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# File 'lib/rake/cloud_formation.rb', line 33

def capabilities
  @capabilities
end

#notification_arns ⇒ Object (readonly)

Returns the value of attribute notification_arns.



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# File 'lib/rake/cloud_formation.rb', line 33

def notification_arns
  @notification_arns
end

#parameters ⇒ Object (readonly)

Returns the value of attribute parameters.



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# File 'lib/rake/cloud_formation.rb', line 33

def parameters
  @parameters
end

#region ⇒ Object

Returns the value of attribute region.



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# File 'lib/rake/cloud_formation.rb', line 32

def region
  @region
end

#template ⇒ Object

Returns the value of attribute template.



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# File 'lib/rake/cloud_formation.rb', line 32

def template
  @template
end

Class Method Details

.define_task(args, &block) ⇒ Object 



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# File 'lib/rake/cloud_formation.rb', line 23

def self.define_task(args, &block)
  t = super
  if (t.is_a?(Stack))
    yield t if block_given?
    t.prepare
  end
  t
end

Instance Method Details

#execute(*args) ⇒ Object 



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# File 'lib/rake/cloud_formation.rb', line 47

def execute(*args)
  super
  options = {
    stack_name: name,
    template_body: IO.read(template),
  }
  unless parameters.empty?
    options[:parameters] = parameters.inject([]) do |params, (key, value)|
      param = {
        :parameter_key => key
      }
      if value.is_a?(String)
        param[:parameter_value] = value
      elsif value.is_a?(Proc)
        param[:parameter_value] = value.call
      else
        raise "Parameter value of unknown type: key=#{key.inspect} value=#{value.inspect}"
      end
      params << param
      params
    end
  end
  options[:capabilities] = capabilities.to_a unless capabilities.empty?
  options[:notification_arns] = notification_arns.to_a unless notification_arns.empty?
  puts "Creating CloudFormation stack: #{name}"
  cf(region).create_stack(options)
  while cf(region).describe_stacks({stack_name: name}).stacks.first.stack_status === 'CREATE_IN_PROGRESS'
    sleep 20
  end
  unless cf(region).describe_stacks({stack_name: name}).stacks.first.stack_status === 'CREATE_COMPLETE'
    raise "Stack creation failed"
  end
end

#needed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rake/cloud_formation.rb', line 39

def needed?
  begin
    cf(region).describe_stacks({stack_name: name}).stacks.first.stack_status != 'CREATE_COMPLETE'
  rescue
    true
  end
end

#prepare ⇒ Object 



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# File 'lib/rake/cloud_formation.rb', line 35

def prepare
  prerequisites << file(@template)
end