78 lines
2.8 KiB
Ruby
78 lines
2.8 KiB
Ruby
# frozen_string_literal: true
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class Experiment < ApplicationRecord
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has_many :experiment_users
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has_many :experiment_subjects, inverse_of: :experiment
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validates :name, presence: true, uniqueness: true, length: { maximum: 255 }
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def self.add_user(name, group_type, user, context = {})
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by_name(name).record_user_and_group(user, group_type, context)
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end
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def self.add_group(name, variant:, group:)
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add_subject(name, variant: variant, subject: group)
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end
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def self.add_subject(name, variant:, subject:)
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by_name(name).record_subject_and_variant!(subject, variant)
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end
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def self.record_conversion_event(name, user, context = {})
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by_name(name).record_conversion_event_for_user(user, context)
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end
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def self.by_name(name)
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find_or_create_by!(name: name)
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end
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# Create or update the recorded experiment_user row for the user in this experiment.
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def record_user_and_group(user, group_type, context = {})
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experiment_user = experiment_users.find_or_initialize_by(user: user)
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experiment_user.assign_attributes(group_type: group_type, context: merged_context(experiment_user, context))
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# We only call save when necessary because this causes the request to stick to the primary DB
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# even when the save is a no-op
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# https://gitlab.com/gitlab-org/gitlab/-/issues/324649
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experiment_user.save! if experiment_user.changed?
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experiment_user
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end
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def record_conversion_event_for_user(user, context = {})
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experiment_user = experiment_users.find_by(user: user)
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return unless experiment_user
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experiment_user.update!(converted_at: Time.current, context: merged_context(experiment_user, context))
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end
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def record_conversion_event_for_subject(subject, context = {})
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raise 'Incompatible subject provided!' unless ExperimentSubject.valid_subject?(subject)
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attr_name = subject.class.table_name.singularize.to_sym
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experiment_subject = experiment_subjects.find_by(attr_name => subject)
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return unless experiment_subject
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experiment_subject.update!(converted_at: Time.current, context: merged_context(experiment_subject, context))
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end
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def record_subject_and_variant!(subject, variant)
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raise 'Incompatible subject provided!' unless ExperimentSubject.valid_subject?(subject)
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attr_name = subject.class.table_name.singularize.to_sym
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experiment_subject = experiment_subjects.find_or_initialize_by(attr_name => subject)
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experiment_subject.assign_attributes(variant: variant)
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# We only call save when necessary because this causes the request to stick to the primary DB
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# even when the save is a no-op
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# https://gitlab.com/gitlab-org/gitlab/-/issues/324649
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experiment_subject.save! if experiment_subject.changed?
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experiment_subject
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end
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private
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def merged_context(experiment_subject, new_context)
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experiment_subject.context.deep_merge(new_context.deep_stringify_keys)
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end
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end
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