58 lines
1.5 KiB
Ruby
58 lines
1.5 KiB
Ruby
# frozen_string_literal: true
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module RedisCacheable
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extend ActiveSupport::Concern
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include Gitlab::Utils::StrongMemoize
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CACHED_ATTRIBUTES_EXPIRY_TIME = 24.hours
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class_methods do
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def cached_attr_reader(*attributes)
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attributes.each do |attribute|
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define_method(attribute) do
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unless self.has_attribute?(attribute)
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raise ArgumentError, "`cached_attr_reader` requires the #{self.class.name}\##{attribute} attribute to have a database column"
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end
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cached_attribute(attribute) || read_attribute(attribute)
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end
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end
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end
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end
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def cached_attribute(attribute)
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cached_value = (cached_attributes || {})[attribute]
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cast_value_from_cache(attribute, cached_value) if cached_value
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end
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def cache_attributes(values)
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with_redis do |redis|
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redis.set(cache_attribute_key, Gitlab::Json.dump(values), ex: CACHED_ATTRIBUTES_EXPIRY_TIME)
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end
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clear_memoization(:cached_attributes)
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end
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private
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def cache_attribute_key
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"cache:#{self.class.name}:#{self.id}:attributes"
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end
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def cached_attributes
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strong_memoize(:cached_attributes) do
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with_redis do |redis|
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data = redis.get(cache_attribute_key)
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Gitlab::Json.parse(data, symbolize_names: true) if data
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end
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end
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end
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def with_redis(&block)
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Gitlab::Redis::Cache.with(&block) # rubocop:disable CodeReuse/ActiveRecord
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end
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def cast_value_from_cache(attribute, value)
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self.class.type_for_attribute(attribute.to_s).cast(value)
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end
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end
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