Module: Tfctl::Generator

Defined in:
lib/tfctl/generator.rb

Class Method Summary collapse

Class Method Details

.make(account_id:, account_name:, execution_role:, profiles:, config:, region: 'eu-west-1', tf_version: '>= 0.12.0', aws_provider_version: '~> 2.14', target_dir: "#{PROJECT_ROOT}/.tfctl/#{config[:config_name]}/#{account_name}") ⇒ Object 



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# File 'lib/tfctl/generator.rb', line 17

def make(
    account_id:,
    account_name:,
    execution_role:,
    profiles:,
    config:,
    region: 'eu-west-1',
    tf_version: '>= 0.12.0',
    aws_provider_version: '~> 2.14',
    target_dir: "#{PROJECT_ROOT}/.tfctl/#{config[:config_name]}/#{account_name}"
)

    FileUtils.mkdir_p target_dir

    terraform_block = {
        'terraform' => {
            'required_version' => tf_version,
            'backend'          => {
                's3' => {
                    'bucket'         => config[:tf_state_bucket],
                    'key'            => "#{account_name}/tfstate",
                    'region'         => config[:tf_state_region],
                    'role_arn'       => config[:tf_state_role_arn],
                    'dynamodb_table' => config[:tf_state_dynamodb_table],
                    'encrypt'        => 'true',
                },
            },
        },
    }
    write_json_block("#{target_dir}/terraform.tf.json", terraform_block)

    provider_block = {
        'provider' => {
            'aws' => {
                'version'     => aws_provider_version,
                'region'      => region,
                'assume_role' => {
                    'role_arn' => "arn:aws:iam::#{account_id}:role/#{execution_role}",
                },
            },
        },
    }
    write_json_block("#{target_dir}/provider.tf.json", provider_block)

    vars_block = {
        'variable' => {
            'config' => {
                'type' => 'string',
            },
        },
    }
    write_json_block("#{target_dir}/vars.tf.json", vars_block)

    # config is passed to profiles as a json encoded string.  It can be
    # decoded in profile using jsondecode() function.
    config_block = { 'config' => config.to_json }
    write_json_block("#{target_dir}/config.auto.tfvars.json", config_block)

    FileUtils.rm Dir.glob("#{target_dir}/profile_*.tf.json")

    profiles.each do |profile|
        profile_block = {
            'module' => {
                profile => {
                    'source'    => "../../../profiles/#{profile}",
                    'config'    => '${var.config}',
                    'providers' => {
                        'aws' => 'aws',
                    },
                },
            },
        }

        write_json_block("#{target_dir}/profile_#{profile}.tf.json", profile_block)
    end

end

.write_json_block(path, block) ⇒ Object 



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# File 'lib/tfctl/generator.rb', line 11

def write_json_block(path, block)
    File.open(path, 'w') do |f|
        f.write(JSON.pretty_generate(block) + "\n")
    end
end