class AwsCloudwatchAlarm

def fetch_from_api
  aws_alarms = BackendFactory.create(inspec_runner).describe_alarms_for_metric(
    metric_name: @metric_name,
    namespace: @metric_namespace,
  )
  if aws_alarms.metric_alarms.empty?
    @exists = false
  elsif aws_alarms.metric_alarms.count > 1
    alarms = aws_alarms.metric_alarms.map(&:alarm_name)
    raise 'More than one Cloudwatch Alarm was matched. Try using ' \
      "more specific resource parameters. Alarms matched: #{alarms.join(', ')}"
  else
    @alarm_actions = aws_alarms.metric_alarms.first.alarm_actions
    @alarm_name = aws_alarms.metric_alarms.first.alarm_name
    @exists = true
  end
end

def validate_params(raw_params)
  recognized_params = check_resource_param_names(
    raw_params: raw_params,
    allowed_params: [:metric_name, :metric_namespace],
  )
  validated_params = {}
  # Currently you must specify exactly metric_name and metric_namespace
  [:metric_name, :metric_namespace].each do |param|
    raise ArgumentError, "Missing resource param #{param}" unless recognized_params.key?(param)
    validated_params[param] = recognized_params.delete(param)
  end
  validated_params
end