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# 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 = nil)
return unless should_track? # don't track events for excluded contexts
record_experiment if @record # record the subject in the database if the context contains a namespace, group, project, actor or user
track(:assignment) # track that we've assigned a variant for this context
begin
Gon.push({ experiment: { name => signature } }, true) # push the experiment data to the client
rescue NoMethodError
# means we're not in the request cycle, and can't add to Gon. Log a warning maybe?
end
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/1-0-0', signature
)
))
end
def record!
@record = true
end
def exclude!
@excluded = true
end
def control_behavior
# define a default nil control behavior so we can omit it when not needed
end
private
def feature_flag_name
name.tr('/', '_')
end
def experiment_group?
Feature.enabled?(feature_flag_name, self, type: :experiment, default_enabled: :yaml)
end
def record_experiment
subject = context.value[:namespace] || context.value[:group] || context.value[:project] || context.value[:user] || context.value[:actor]
return unless ExperimentSubject.valid_subject?(subject)
variant = :experimental if @variant_name != :control
Experiment.add_subject(name, variant: variant || :control, subject: subject)
end
end
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