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# frozen_string_literal: true
module Ml
class CreateModelVersionService
def initialize(model, params = {})
@model = model
@version = params[:version]
@package = params[:package]
@description = params[:description]
@user = params[:user]
@metadata = params[:metadata]
end
def execute
ApplicationRecord.transaction do
@version ||= Ml::IncrementVersionService.new(@model.latest_version.try(:version)).execute
error(_("Version must be semantic version")) unless Packages::SemVer.match(@version)
package = @package || find_or_create_package(@model.name, @version)
error(_("Can't create model version package")) unless package
@model_version = Ml::ModelVersion.new(model: @model, project: @model.project, version: @version,
package: package, description: @description)
@model_version.save
error(@model_version.errors.full_messages) unless @model_version.persisted?
@model_version.candidate = ::Ml::CreateCandidateService.new(
@model.default_experiment,
{ model_version: @model_version }
).execute
error(_("Version must be semantic version")) unless @model_version.candidate
@model_version.add_metadata(@metadata)
Gitlab::InternalEvents.track_event(
'model_registry_ml_model_version_created',
project: @model.project,
user: @user
)
audit_creation_event
ServiceResponse.success(message: [], payload: { model_version: @model_version })
end
rescue ActiveRecord::RecordInvalid => e
ServiceResponse.error(message: [e.message], payload: { model_version: nil })
rescue ModelVersionCreationError => e
ServiceResponse.error(message: e.errors, payload: { model_version: nil })
end
private
def find_or_create_package(model_name, model_version)
package_params = {
name: model_name,
version: model_version
}
::Packages::MlModel::FindOrCreatePackageService
.new(@model.project, @user, package_params)
.execute
end
def error(errors)
raise ModelVersionCreationError.new(Array.wrap(errors)) # rubocop:disable Style/RaiseArgs -- This is a custom error and is handled in this class
end
class ModelVersionCreationError < StandardError
attr_reader :errors
def initialize(errors)
@errors = errors
end
end
def audit_creation_event
audit_context = {
name: 'ml_model_version_created',
author: @user,
scope: @model.project,
target: @model_version,
message: "MlModelVersion #{@model_version.name}/#{@model_version.version} created"
}
::Gitlab::Audit::Auditor.audit(audit_context)
end
end
end
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