68 lines
2.2 KiB
Ruby
68 lines
2.2 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
class ApplicationExperiment < Gitlab::Experiment # rubocop:disable Gitlab/NamespacedClass
|
|
def enabled?
|
|
return false if Feature::Definition.get(feature_flag_name).nil? # there has to be a feature flag yaml file
|
|
return false unless Gitlab.dev_env_or_com? # we have to be in an environment that allows experiments
|
|
|
|
# the feature flag has to be rolled out
|
|
Feature.get(feature_flag_name).state != :off # rubocop:disable Gitlab/AvoidFeatureGet
|
|
end
|
|
|
|
def publish(_result)
|
|
track(:assignment) # track that we've assigned a variant for this context
|
|
Gon.global.push({ experiment: { name => signature } }, true) # push the experiment data to the client
|
|
end
|
|
|
|
def track(action, **event_args)
|
|
return unless should_track? # don't track events for excluded contexts
|
|
|
|
# track the event, and mix in the experiment signature data
|
|
Gitlab::Tracking.event(name, action.to_s, **event_args.merge(
|
|
context: (event_args[:context] || []) << SnowplowTracker::SelfDescribingJson.new(
|
|
'iglu:com.gitlab/gitlab_experiment/jsonschema/0-3-0', signature
|
|
)
|
|
))
|
|
end
|
|
|
|
def exclude!
|
|
@excluded = true
|
|
end
|
|
|
|
def rollout_strategy
|
|
# no-op override in inherited class as desired
|
|
end
|
|
|
|
def variants
|
|
# override as desired in inherited class with all variants + control
|
|
# %i[variant1 variant2 control]
|
|
#
|
|
# this will make sure we supply variants as these go together - rollout_strategy of :round_robin must have variants
|
|
raise NotImplementedError, "Inheriting class must supply variants as an array if :round_robin strategy is used" if rollout_strategy == :round_robin
|
|
end
|
|
|
|
private
|
|
|
|
def feature_flag_name
|
|
name.tr('/', '_')
|
|
end
|
|
|
|
def resolve_variant_name
|
|
case rollout_strategy
|
|
when :round_robin
|
|
round_robin_rollout
|
|
else
|
|
percentage_rollout
|
|
end
|
|
end
|
|
|
|
def round_robin_rollout
|
|
Strategy::RoundRobin.new(feature_flag_name, variants).execute
|
|
end
|
|
|
|
def percentage_rollout
|
|
return variant_names.first if Feature.enabled?(feature_flag_name, self, type: :experiment, default_enabled: :yaml)
|
|
|
|
nil # Returning nil vs. :control is important for not caching and rollouts.
|
|
end
|
|
end
|