This script checks if SSM variables declared in the `template.yaml` file exist. If they do not exist, this script will create it for you.

check_env_variable.rb

require 'aws-sdk-ssm'

module Tasks::CheckEnvVariables
  AVAILABLE_ENVS = %w[qa production].freeze

  def self.perform
    template = YAML.load_file('./template.yaml')
    ssm_client = Aws::SSM::Client.new(
      region: 'eu-west-3',
      credentials: Aws::Credentials.new(ENV['AWS_ACCESS_KEY_ID'], ENV['AWS_SECRET_ACCESS_KEY'])
    )

    template['Globals']['Function'].each do |resource_name, resource|
      if resource_name == 'Environment'
        env_variables = resource['Variables']
        ssm_keys = []

        next if env_variables.nil?

        env_variables.each do |key, value|
          AVAILABLE_ENVS.each do |env|
            if value.include?('x-crypteia-ssm:')
              ssm_keys << value.gsub("x-crypteia-ssm:","").gsub("${RailsEnv}",env)
            end
          end
        end

        ssm_keys.each do |key|
          begin
            resp = ssm_client.get_parameter({
              name: key,
            })
          rescue Aws::SSM::Errors::ParameterNotFound => e
            puts "Creating SSM parameter #{key}....."
            ssm_client.put_parameter(
              name: key,
              value: "TODO",
              type: 'String',
              overwrite: true
            )
          end
          puts "Created SSM parameter: #{key} !"
        end
      end
    end
  end
end