69 lines
1.7 KiB
Ruby
69 lines
1.7 KiB
Ruby
# frozen_string_literal: true
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# Extend the Feature class with the ability to stub feature flags.
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module StubbedFeature
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extend ActiveSupport::Concern
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prepended do
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cattr_reader(:persist_used) do
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# persist feature flags in CI
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# nil: indicates that we do not want to persist used feature flags
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Gitlab::Utils.to_boolean(ENV['CI']) ? {} : nil
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end
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end
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class_methods do
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# Turn stubbed feature flags on or off.
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def stub=(stub)
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@stub = stub
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end
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def stub?
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@stub.nil? ? true : @stub
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end
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# Wipe any previously set feature flags.
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def reset_flipper
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@flipper = nil
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end
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# Replace #flipper method with the optional stubbed/unstubbed version.
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def flipper
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if stub?
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@flipper ||= Flipper.new(Flipper::Adapters::Memory.new)
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else
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super
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end
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end
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# Replace #enabled? method with the optional stubbed/unstubbed version.
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def enabled?(*args, **kwargs)
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feature_flag = super
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return feature_flag unless stub?
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persist_used!(args.first)
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# If feature flag is not persisted we mark the feature flag as enabled
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# We do `m.call` as we want to validate the execution of method arguments
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# and a feature flag state if it is not persisted
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unless Feature.persisted_name?(args.first)
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feature_flag = true
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end
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feature_flag
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end
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# This method creates a temporary file in `tmp/feature_flags`
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# if feature flag was touched during execution
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def persist_used!(name)
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return unless persist_used
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return if persist_used[name]
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persist_used[name] = true
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FileUtils.touch(
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Rails.root.join('tmp', 'feature_flags', name.to_s + ".used")
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)
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end
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end
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end
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