Class: Cfer::Auster::Step

Inherits:
Object
  • Object
show all
Includes:
Logging::Mixin
Defined in:
lib/cfer/auster/step.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Logging::Mixin

#logger

Constructor Details

#initialize(repo:, count:, tag:, directory:) ⇒ Step

Returns a new instance of Step.



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# File 'lib/cfer/auster/step.rb', line 16

def initialize(repo:, count:, tag:, directory:)
  raise "directory '#{directory}' does not exist." unless File.directory?(directory)
  @repo = repo

  @count = count.to_i
  @tag = tag.dup.freeze

  @directory = directory.dup.freeze

  @cfer_directory = File.join(@directory, "cfer")
  raise "directory '#{@cfer_directory}' does not exist." unless File.directory?(directory)
end

Instance Attribute Details

#count ⇒ Object (readonly)

Returns the value of attribute count.



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# File 'lib/cfer/auster/step.rb', line 12

def count
  @count
end

#directory ⇒ Object (readonly)

Returns the value of attribute directory.



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# File 'lib/cfer/auster/step.rb', line 14

def directory
  @directory
end

#repo ⇒ Object (readonly)

Returns the value of attribute repo.



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# File 'lib/cfer/auster/step.rb', line 10

def repo
  @repo
end

#tag ⇒ Object (readonly)

Returns the value of attribute tag.



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# File 'lib/cfer/auster/step.rb', line 13

def tag
  @tag
end

Instance Method Details

#apply(config_set) ⇒ Object 



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# File 'lib/cfer/auster/step.rb', line 65

def apply(config_set)
  raise "config_set must be a Cfer::Auster::Config." unless config_set.is_a?(Cfer::Auster::Config)

  with_cfer(config_set) do |cfer|
    do_on_create(config_set) unless cfn_stack(config_set).exists?
    do_pre_converge(config_set)

    logger.info "Converging Cfer stack as '#{cfn_stack_name(config_set)}'."
    cfer.converge!(block: true)

    do_post_converge(config_set, cfn_data(config_set))
  end
end

#cfn_data(config_set) ⇒ Object 



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# File 'lib/cfer/auster/step.rb', line 46

def cfn_data(config_set)
  stack = cfn_stack(config_set)

  if !stack.exists?
    nil
  else
    cfn_parameters = stack.parameters.map { |p| [p.parameter_key, p.parameter_value] }.to_h
    cfn_outputs = stack.outputs.map { |o| [o.output_key, o.output_value] }.to_h

    cfn_combined = cfn_parameters.merge(cfn_outputs)

    {
      inputs: cfn_parameters.symbolize_keys,
      outputs: cfn_outputs.symbolize_keys,
      combined: cfn_combined.symbolize_keys
    }
  end
end

#cfn_stack(config_set) ⇒ Object 



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# File 'lib/cfer/auster/step.rb', line 41

def cfn_stack(config_set)
  cfn_client = Aws::CloudFormation::Resource.new(region: config_set.aws_region)
  cfn_client.stack(cfn_stack_name(config_set))
end

#cfn_stack_name(config_set) ⇒ Object 



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# File 'lib/cfer/auster/step.rb', line 37

def cfn_stack_name(config_set)
  "#{config_set.name}-step#{count.to_s.rjust(2, '0')}"
end

#destroy(config_set) ⇒ Object 



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# File 'lib/cfer/auster/step.rb', line 79

def destroy(config_set)
  raise "config_set must be a Cfer::Auster::Config." unless config_set.is_a?(Cfer::Auster::Config)

  stack_name = cfn_stack_name(config_set)
  stack = cfn_stack(config_set)

  if !stack.exists?
    logger.warn "No underlying CloudFormation stack '#{stack_name}' exists."
  else
    logger.info "Deleting CloudFormation stack '#{stack_name}'."
    with_cfer(config_set) do |cfer|
      cfer.destroy!(block: true)
    end

    do_on_destroy(config_set)
  end
end

#json(config_set) ⇒ Object 



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# File 'lib/cfer/auster/step.rb', line 29

def json(config_set)
  raise "config_set must be a Cfer::Auster::Config." unless config_set.is_a?(Cfer::Auster::Config)

  with_cfer(config_set) do |cfer|
    cfer.generate_json
  end
end