Class: Bolt::Plugin::Terraform

Inherits:
Object
  • Object
show all
Defined in:
lib/bolt/plugin/terraform.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Terraform

Returns a new instance of Terraform.



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# File 'lib/bolt/plugin/terraform.rb', line 8

def initialize
  @logger = Logging.logger[self]
end

Instance Method Details

#hooks ⇒ Object 



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# File 'lib/bolt/plugin/terraform.rb', line 16

def hooks
  ['lookup_targets']
end

#load_statefile(opts) ⇒ Object 



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# File 'lib/bolt/plugin/terraform.rb', line 58

def load_statefile(opts)
  dir = opts['dir']
  filename = opts.fetch('statefile', 'terraform.tfstate')
  statefile = File.expand_path(File.join(dir, filename))

  JSON.parse(File.read(statefile))
rescue StandardError => e
  raise Bolt::FileError.new("Could not load Terraform state file #{filename}: #{e}", filename)
end

#lookup_targets(opts) ⇒ Object 



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# File 'lib/bolt/plugin/terraform.rb', line 24

def lookup_targets(opts)
  state = load_statefile(opts)

  resources = state.fetch('modules', {}).flat_map do |mod|
    mod.fetch('resources', {}).map do |name, resource|
      [name, resource.dig('primary', 'attributes')]
    end
  end

  regex = Regexp.new(opts['resource_type'])

  resources.select do |name, _resource|
    name.match?(regex)
  end.map do |name, resource|
    unless resource.key?(opts['uri'])
      warn_missing_property(name, opts['uri'])
      next
    end

    target = { 'uri' => resource[opts['uri']] }
    if opts.key?('name')
      if resource.key?(opts['name'])
        target['name'] = resource[opts['name']]
      else
        warn_missing_property(name, opts['name'])
      end
    end
    if opts.key?('config')
      target['config'] = resolve_config(name, resource, opts['config'])
    end
    target
  end.compact
end

#name ⇒ Object 



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# File 'lib/bolt/plugin/terraform.rb', line 12

def name
  'terraform'
end

#resolve_config(name, resource, config_template) ⇒ Object 



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# File 'lib/bolt/plugin/terraform.rb', line 68

def resolve_config(name, resource, config_template)
  Bolt::Util.walk_vals(config_template) do |value|
    if value.is_a?(String)
      if resource.key?(value)
        resource[value]
      else
        warn_missing_property(name, value)
        nil
      end
    else
      value
    end
  end
end

#warn_missing_property(name, property) ⇒ Object 



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# File 'lib/bolt/plugin/terraform.rb', line 20

def warn_missing_property(name, property)
  @logger.warn("Could not find property #{property} of terraform resource #{name}")
end