fluke/devops-service/db/validators/field_validators/image_name.rb

require_relative "base"
module Validators
  module FieldValidator
    class ImageName < Base

      MAX_NAME_LEN = 100
      NAME_REGEX = /\A[\w\-\.]{1,#{MAX_NAME_LEN}}\z/

      def valid?
        !NAME_REGEX.match(@value).nil?
      end

      def message
        "Invalid value '#{@value}': it should contains symbols 'a-zA-Z0-9_-.' and length should be more then 1 and less or equals then #{MAX_NAME_LEN}"
      end
    end
  end
end