Add Packages::Debian::ProcessChangesService class

(Also change Packages::Debian::ExtractMetadataService to keep Architecture in fields)

app/services/packages/debian/extract_metadata_service.rb

@@ -58,7 +58,8 @@ module Packages
         file_type == :dsc || file_type == :buildinfo || file_type == :changes
       end
 
-      def extracted_fields
+      def fields
+        strong_memoize(:fields) do
           if file_type_debian?
             package_file.file.use_file do |file_path|
               ::Packages::Debian::ExtractDebMetadataService.new(file_path).execute
@@ -69,10 +70,10 @@ module Packages
             end
           end
         end
+      end
 
       def extract_metadata
-        fields = extracted_fields
-        architecture = fields.delete('Architecture') if file_type_debian?
+        architecture = fields['Architecture'] if file_type_debian?
 
         {
           file_type: file_type,

app/services/packages/debian/process_changes_service.rb

+# frozen_string_literal: true
+
+module Packages
+  module Debian
+    class ProcessChangesService
+      include ExclusiveLeaseGuard
+      include Gitlab::Utils::StrongMemoize
+
+      # used by ExclusiveLeaseGuard
+      DEFAULT_LEASE_TIMEOUT = 1.hour.to_i.freeze
+
+      def initialize(package_file, creator)
+        @package_file, @creator = package_file, creator
+      end
+
+      def execute
+        try_obtain_lease do
+          # return if changes file has already been processed
+          break if package_file.debian_file_metadatum&.changes?
+
+          validate!
+
+          package_file.transaction do
+            update_files_metadata
+            update_changes_metadata
+          end
+        end
+      end
+
+      private
+
+      attr_reader :package_file, :creator
+
+      def validate!
+        raise ArgumentError, 'invalid package file' unless package_file.debian_file_metadatum
+        raise ArgumentError, 'invalid package file' unless package_file.debian_file_metadatum.unknown?
+        raise ArgumentError, 'invalid package file' unless metadata[:file_type] == :changes
+      end
+
+      def update_files_metadata
+        files.each do |filename, entry|
+          entry.package_file.package = package
+
+          file_metadata = ::Packages::Debian::ExtractMetadataService.new(entry.package_file).execute
+
+          entry.package_file.debian_file_metadatum.update!(
+            file_type: file_metadata[:file_type],
+            component: files[filename].component,
+            architecture: file_metadata[:architecture],
+            fields: file_metadata[:fields]
+          )
+          entry.package_file.save!
+        end
+      end
+
+      def update_changes_metadata
+        package_file.update!(package: package)
+        package_file.debian_file_metadatum.update!(
+          file_type: metadata[:file_type],
+          fields: metadata[:fields]
+        )
+      end
+
+      def metadata
+        strong_memoize(:metadata) do
+          ::Packages::Debian::ExtractChangesMetadataService.new(package_file).execute
+        end
+      end
+
+      def files
+        metadata[:files]
+      end
+
+      def project
+        package_file.package.project
+      end
+
+      def package
+        strong_memoize(:package) do
+          params = {
+            'name': metadata[:fields]['Source'],
+            'version': metadata[:fields]['Version'],
+            'distribution_name': metadata[:fields]['Distribution']
+          }
+          response = Packages::Debian::FindOrCreatePackageService.new(project, creator, params).execute
+          response.payload[:package]
+        end
+      end
+
+      # used by ExclusiveLeaseGuard
+      def lease_key
+        "packages:debian:process_changes_service:package_file:#{package_file.id}"
+      end
+
+      # used by ExclusiveLeaseGuard
+      def lease_timeout
+        DEFAULT_LEASE_TIMEOUT
+      end
+    end
+  end
+end

spec/services/packages/debian/process_changes_service_spec.rb

+# frozen_string_literal: true
+require 'spec_helper'
+
+RSpec.describe Packages::Debian::ProcessChangesService do
+  describe '#execute' do
+    let_it_be(:user) { create(:user) }
+    let_it_be_with_reload(:distribution) { create(:debian_project_distribution, :with_file, codename: 'unstable') }
+    let_it_be(:incoming) { create(:debian_incoming, project: distribution.project) }
+
+    let(:package_file) { incoming.package_files.last }
+
+    subject { described_class.new(package_file, user) }
+
+    context 'with valid package file' do
+      it 'updates package and package file', :aggregate_failures do
+        expect { subject.execute }
+          .to change { Packages::Package.count }.from(1).to(2)
+          .and not_change { Packages::PackageFile.count }
+          .and change { incoming.package_files.count }.from(7).to(0)
+
+        created_package = Packages::Package.last
+        expect(created_package.name).to eq 'sample'
+        expect(created_package.version).to eq '1.2.3~alpha2'
+        expect(created_package.creator).to eq user
+      end
+    end
+
+    context 'with invalid package file' do
+      let(:package_file) { incoming.package_files.first }
+
+      it 'raise ExtractionError', :aggregate_failures do
+        expect { subject.execute }
+          .to not_change { Packages::Package.count }
+          .and not_change { Packages::PackageFile.count }
+          .and not_change { incoming.package_files.count }
+          .and not_change { distribution.reload.needs_update? }
+          .and raise_error(Packages::Debian::ExtractChangesMetadataService::ExtractionError, 'is not a changes file')
+      end
+    end
+
+    context 'when creating package fails' do
+      before do
+        allow_next_instance_of(::Packages::Debian::FindOrCreatePackageService) do |find_or_create_package_service|
+          expect(find_or_create_package_service).to receive(:execute).and_raise(ActiveRecord::ConnectionTimeoutError, 'connect timeout')
+        end
+      end
+
+      it 'remove the package file', :aggregate_failures do
+        expect { subject.execute }
+          .to not_change { Packages::Package.count }
+          .and not_change { Packages::PackageFile.count }
+          .and not_change { incoming.package_files.count }
+          .and not_change { distribution.reload.needs_update? }
+          .and raise_error(ActiveRecord::ConnectionTimeoutError, 'connect timeout')
+      end
+    end
+  end
+end