Add Packages::Debian::CreateDistributionService

app/services/packages/debian/create_distribution_service.rb

+# frozen_string_literal: true
+
+module Packages
+  module Debian
+    class CreateDistributionService
+      def initialize(container, user, params)
+        @container, @params = container, params
+        @params[:creator] = user
+
+        @components = params.delete(:components) || ['main']
+
+        @architectures = params.delete(:architectures) || ['amd64']
+        @architectures += ['all']
+
+        @distribution = nil
+        @errors = []
+      end
+
+      def execute
+        create_distribution
+      end
+
+      private
+
+      attr_reader :container, :params, :components, :architectures, :distribution, :errors
+
+      def append_errors(record, prefix = '')
+        return if record.valid?
+
+        prefix = "#{prefix} " unless prefix.empty?
+        @errors += record.errors.full_messages.map { |message| "#{prefix}#{message}" }
+      end
+
+      def create_distribution
+        @distribution = container.debian_distributions.new(params)
+
+        append_errors(distribution)
+        return error unless errors.empty?
+
+        distribution.transaction do
+          if distribution.save
+            create_components
+            create_architectures
+
+            success
+          end
+        end || error
+      end
+
+      def create_components
+        create_objects(distribution.components, components, error_label: 'Component')
+      end
+
+      def create_architectures
+        create_objects(distribution.architectures, architectures, error_label: 'Architecture')
+      end
+
+      def create_objects(objects, object_names_from_params, error_label: )
+        object_names_from_params.each do |name|
+          new_object = objects.create(name: name)
+          append_errors(new_object, error_label)
+          raise ActiveRecord::Rollback unless new_object.persisted?
+        end
+      end
+
+      def success
+        ServiceResponse.success(payload: { distribution: distribution }, http_status: :created)
+      end
+
+      def error
+        ServiceResponse.error(message: errors.to_sentence, payload: { distribution: distribution })
+      end
+    end
+  end
+end

spec/services/packages/debian/create_distribution_service_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Packages::Debian::CreateDistributionService do
+  RSpec.shared_examples 'Create Debian Distribution' do |expected_message, expected_components, expected_architectures|
+    it 'returns ServiceResponse', :aggregate_failures do
+      if expected_message.nil?
+        expect { response }
+          .to change { container.debian_distributions.klass.all.count }
+          .from(0).to(1)
+          .and change { container.debian_distributions.count }
+          .from(0).to(1)
+          .and change { container.debian_distributions.first&.components&.count }
+          .from(nil).to(expected_components.count)
+          .and change { container.debian_distributions.first&.architectures&.count }
+          .from(nil).to(expected_architectures.count)
+      else
+        expect { response }
+          .to not_change { container.debian_distributions.klass.all.count }
+          .and not_change { container.debian_distributions.count }
+          .and not_change { Packages::Debian::ProjectComponent.count }
+          .and not_change { Packages::Debian::GroupComponent.count }
+          .and not_change { Packages::Debian::ProjectArchitecture.count }
+          .and not_change { Packages::Debian::GroupArchitecture.count }
+      end
+
+      expect(response).to be_a(ServiceResponse)
+      expect(response.success?).to eq(expected_message.nil?)
+      expect(response.error?).to eq(!expected_message.nil?)
+      expect(response.message).to eq(expected_message)
+
+      distribution = response.payload[:distribution]
+      expect(distribution.persisted?).to eq(expected_message.nil?)
+      expect(distribution.container).to eq(container)
+      expect(distribution.creator).to eq(user)
+      params.each_pair do |name, value|
+        expect(distribution.send(name)).to eq(value)
+      end
+
+      expect(distribution.components.map(&:name)).to contain_exactly(*expected_components)
+      expect(distribution.architectures.map(&:name)).to contain_exactly(*expected_architectures)
+    end
+  end
+
+  shared_examples 'Debian Create Distribution Service' do
+    context 'with only the codename param' do
+      let(:params) { { codename: 'my-codename' } }
+
+      it_behaves_like 'Create Debian Distribution', nil, %w[main], %w[all amd64]
+    end
+
+    context 'with codename, components and architectures' do
+      let(:params) do
+        {
+          codename: 'my-codename',
+          components: %w[contrib non-free],
+          architectures: %w[arm64]
+        }
+      end
+
+      it_behaves_like 'Create Debian Distribution', nil, %w[contrib non-free], %w[all arm64]
+    end
+
+    context 'with invalid suite' do
+      let(:params) do
+        {
+          codename: 'my-codename',
+          suite: 'erroné'
+        }
+      end
+
+      it_behaves_like 'Create Debian Distribution', 'Suite is invalid', %w[], %w[]
+    end
+
+    context 'with invalid component name' do
+      let(:params) do
+        {
+          codename: 'my-codename',
+          components: %w[before erroné after],
+          architectures: %w[arm64]
+        }
+      end
+
+      it_behaves_like 'Create Debian Distribution', 'Component Name is invalid', %w[before erroné], %w[]
+    end
+
+    context 'with invalid architecture name' do
+      let(:params) do
+        {
+          codename: 'my-codename',
+          components: %w[contrib non-free],
+          architectures: %w[before erroné after']
+        }
+      end
+
+      it_behaves_like 'Create Debian Distribution', 'Architecture Name is invalid', %w[contrib non-free], %w[before erroné]
+    end
+  end
+
+  let_it_be(:user) { create(:user) }
+
+  subject { described_class.new(container, user, params) }
+
+  let(:response) { subject.execute }
+
+  context 'within a projet' do
+    let_it_be(:container) { create(:project) }
+
+    it_behaves_like 'Debian Create Distribution Service'
+  end
+
+  context 'within a group' do
+    let_it_be(:container) { create(:group) }
+
+    it_behaves_like 'Debian Create Distribution Service'
+  end
+end