require 'mcrain'

# don't require 'redis' here in order to use mcrain without 'redis' gem
# require 'redis'

module Mcrain
  class Redis < Base
    self.server_name = :redis

    self.container_image = "redis:2.8.19"
    self.port = 6379

    def client_require
      'redis'
    end

    def client_class
      ::Redis
    end

    def client_init_args
      [{host: host, port: port}]
    end

    def wait_for_ready
      client.keys
    end

    attr_accessor :db_dir

    def build_docker_options
      r = super
      if db_dir
        r['Volumes'] ||= {}
        r['Volumes']["/data"] = File.expand_path(db_dir)
      end
      return r
    end
  end
end