Module: Strum::Cache

Extended by:
Dry::Configurable
Defined in:
lib/strum/cache.rb,
lib/strum/cache/version.rb

Overview

rubocop: disable Style/Documentation

Defined Under Namespace

Classes: Error

Constant Summary collapse

VERSION = 
"1.0.0"

Class Method Summary collapse

Class Method Details

.const_missing(resource_name) ⇒ Object

rubocop: disable Metrics/AbcSize,Metrics/MethodLength



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# File 'lib/strum/cache.rb', line 24

def self.const_missing(resource_name)
  # Strum::Cache::Entity::Find.(id)
  # Strum::Cache::Entity::Search.(params)
  # Strum::Cache::Entity::Put.(params)

  Module.new do
    const_set(:Push, Class.new do
      include Strum::Service

      define_method :call do
        redis_connection.hset(id, input)
        redis_connection.expire(id, redis_resource_expire)
      end

      define_method :audit do
        required(:id)
      end

      private

        define_method :resource_code do
          resource_name.downcase.to_s
        end

        define_method :redis_connection do
          Strum::CacheUtils::RedisStorage.const_get(resource_code.capitalize, false).instance.redis
        end

        def redis_resource_expire
          ENV.fetch("#{resource_code.to_s.upcase}_CACHE_EXPIRE", ENV.fetch("CACHE_EXPIRE", 60 * 15))
        end
    end)

    const_set(:Find, Class.new do
      include Strum::Service

      define_method :call do
        if (entity = from_cache_by_id(input) || find_by_id(input))
          output(entity)
        else
          not_found
        end
      end

      define_method :audit do
        self.input = input.to_s.to_i
        add_error(:id, :invalid) unless input.positive?
      end

      private

        define_method :resource_code do
          resource_name.downcase
        end

        define_method :from_cache_by_id do |resource_id|
          Strum::CacheUtils::Redis.call(resource_code: resource_code, resource_id: resource_id)
        end

        define_method :find_by_id do |resource_id|
          Strum::CacheUtils::Find.call(resource_code: resource_code, resource_id: resource_id) do |m|
            m.success { |result| result }
            m.failure do |errors|
              add_errors(errors)
              nil
            end
          end
        end

        define_method :not_found do
          add_error(:entity, :not_found)
        end
    end)

    const_set(:Search, Class.new do
      include Strum::Service

      define_method :call do
        if (entity = from_cache_by_params || search_by_params)
          output(entity)
        else
          not_found
        end
      end

      define_method :audit do
        required
      end

      private

        define_method :resource_code do
          resource_name.downcase
        end

        define_method :from_cache_by_params do
          false
        end

        define_method :search_by_params do
          Strum::CacheUtils::Search.call(resource_code: resource_code, params: input) do |m|
            m.success { |result| result }
            m.failure do |errors|
              add_errors(errors)
              nil
            end
          end
        end

        define_method :not_found do
          add_error(:entity, :not_found)
        end
    end)
  end
end