64 lines
1.9 KiB
Ruby
64 lines
1.9 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Cache
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# See https://docs.gitlab.com/ee/development/utilities.html#requestcache
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module RequestCache
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def self.extended(klass)
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return if klass < self
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extension = Module.new
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klass.const_set(:RequestCacheExtension, extension)
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klass.prepend(extension)
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end
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attr_accessor :request_cache_key_block
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def request_cache_key(&block)
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if block
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self.request_cache_key_block = block
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else
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request_cache_key_block
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end
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end
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def request_cache(method_name, &method_key_block)
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const_get(:RequestCacheExtension, false).module_eval do
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cache_key_method_name = "#{method_name}_cache_key"
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define_method(method_name) do |*args|
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store =
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if Gitlab::SafeRequestStore.active?
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Gitlab::SafeRequestStore.store
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else
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ivar_name = # ! and ? cannot be used as ivar name
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"@cache_#{method_name.to_s.tr('!?', "\u2605\u2606")}"
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instance_variable_get(ivar_name) ||
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instance_variable_set(ivar_name, {})
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end
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key = __send__(cache_key_method_name, args) # rubocop:disable GitlabSecurity/PublicSend
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store.fetch(key) { store[key] = super(*args) }
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end
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define_method(cache_key_method_name) do |args|
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klass = self.class
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instance_key = instance_exec(&klass.request_cache_key) if
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klass.request_cache_key
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method_key = instance_exec(&method_key_block) if method_key_block
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[klass.name, method_name, *instance_key, *method_key, *args]
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.join(':')
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end
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private cache_key_method_name # rubocop: disable Style/AccessModifierDeclarations
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end
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end
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end
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end
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end
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