Class: Terraformer::Terraform

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

Class Method Summary collapse

Class Method Details

.execute(data, klass_name, options) ⇒ Object 



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# File 'lib/terraformer/terraform.rb', line 10

def execute(data, klass_name, options)
  tf(data[:tf], klass_name, options[:name])
  tfstate(data[:tfstate], options[:merge])
end

.parse_json_file(file_path) ⇒ Object 



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# File 'lib/terraformer/terraform.rb', line 53

def parse_json_file(file_path)
  file_content = File.read(file_path)
  JSON.parse(file_content)
rescue JSON::ParserError
  raise TerraformInvalidTfstateFile, "Unable to parse: #{file_path}."
end

.tf(generated_tf, klass_name, tf_path) ⇒ Object 



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# File 'lib/terraformer/terraform.rb', line 15

def tf(generated_tf, klass_name, tf_path)
  tf_file_name = "#{klass_name.split('::')[-1].downcase}.tf"
  tf_file_name = tf_path unless tf_path.nil?

  if File.file?(tf_file_name)
    UserInput.ask("File: #{tf_file_name} already exists. Overwrite?", "Y", "n")
  end

  File.open(tf_file_name, "w") do |f|
    f.write(generated_tf)
  end
end

.tfstate(generated_tfstate, tfstate_path) ⇒ Object 



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# File 'lib/terraformer/terraform.rb', line 28

def tfstate(generated_tfstate, tfstate_path)
  unless tfstate_path.nil?
    if File.file?(tfstate_path)
      tfstate = parse_json_file(tfstate_path)
    else
      raise TerraformFileNotFound, "File not found while trying to merge state file with: #{tfstate_path}."
    end
  else
    tfstate_path = "terraform.tfstate" 
    if File.file?(tfstate_path)
      UserInput.ask("File: #{tfstate_path} already exists and the 'merge' option was not passed. Overwrite?", "Y", "n")
    end 
    tfstate = tfstate_skeleton
  end

  tfstate["serial"] = tfstate["serial"] + 1
  tfstate["modules"][0]["resources"] = tfstate["modules"][0]["resources"].merge(generated_tfstate)
  state_file = JSON.pretty_generate(tfstate)

  File.open(tfstate_path, "w+") do |f|
    f.write(state_file)
    f.flush
  end
end

.tfstate_skeleton ⇒ Object 



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# File 'lib/terraformer/terraform.rb', line 60

def tfstate_skeleton
  {
      "version" => 3,
      "terraform_version" => "0.7.3",
      "serial" => 0,
      "lineage" =>  SecureRandom.uuid,
      "modules" => [
          {
              "path" => [
                  "root"
              ],
              "outputs" => {},
              "resources" => {},
              "depends_on" => []
          }
      ]
  }
end