Add Packages::Helm::ExtractionWorker

Item 2.5 of https://gitlab.com/gitlab-org/gitlab/-/issues/18997#note_530270349

app/workers/all_queues.yml

@@ -1309,6 +1309,15 @@
   :idempotent: true
   :tags:
   - :exclude_from_kubernetes
+- :name: package_repositories:packages_helm_extraction
+  :worker_name: Packages::Helm::ExtractionWorker
+  :feature_category: :package_registry
+  :has_external_dependencies:
+  :urgency: :low
+  :resource_boundary: :unknown
+  :weight: 1
+  :idempotent: true
+  :tags: []
 - :name: package_repositories:packages_maven_metadata_sync
   :worker_name: Packages::Maven::Metadata::SyncWorker
   :feature_category: :package_registry

app/workers/packages/helm/extraction_worker.rb

+# frozen_string_literal: true
+
+module Packages
+  module Helm
+    class ExtractionWorker
+      include ApplicationWorker
+
+      queue_namespace :package_repositories
+      feature_category :package_registry
+      deduplicate :until_executing
+
+      idempotent!
+
+      def perform(channel, package_file_id)
+        package_file = ::Packages::PackageFile.find_by_id(package_file_id)
+
+        return unless package_file && !package_file.package.default?
+
+        ::Packages::Helm::ProcessFileService.new(channel, package_file).execute
+
+      rescue ::Packages::Helm::ExtractFileMetadataService::ExtractionError,
+             ::Packages::Helm::ProcessFileService::ExtractionError,
+             ::ActiveModel::ValidationError => e
+        Gitlab::ErrorTracking.log_exception(e, project_id: package_file.project_id)
+        package_file.package.update_column(:status, :error)
+      end
+    end
+  end
+end

spec/workers/packages/helm/extraction_worker_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Packages::Helm::ExtractionWorker, type: :worker do
+  describe '#perform' do
+    let_it_be(:package) { create(:helm_package, without_package_files: true, status: 'processing')}
+
+    let!(:package_file) { create(:helm_package_file, without_loaded_metadatum: true, package: package) }
+    let(:package_file_id) { package_file.id }
+    let(:channel) { 'stable' }
+
+    let(:expected_metadata) do
+      {
+        'apiVersion' => 'v2',
+        'description' => 'File, Block, and Object Storage Services for your Cloud-Native Environment',
+        'icon' => 'https://rook.io/images/rook-logo.svg',
+        'name' => 'rook-ceph',
+        'sources' => ['https://github.com/rook/rook'],
+        'version' => 'v1.5.8'
+      }
+    end
+
+    subject { described_class.new.perform(channel, package_file_id) }
+
+    shared_examples 'handling error' do
+      it 'mark the package as errored', :aggregate_failures do
+        expect(Gitlab::ErrorTracking).to receive(:log_exception).with(
+          instance_of(Packages::Helm::ExtractFileMetadataService::ExtractionError),
+          project_id: package_file.package.project_id
+        )
+        expect { subject }
+          .to not_change { Packages::Package.count }
+          .and not_change { Packages::PackageFile.count }
+          .and change { package.reload.status }.from('processing').to('error')
+      end
+    end
+
+    context 'with valid package file' do
+      it_behaves_like 'an idempotent worker' do
+        let(:job_args) { [channel, package_file_id] }
+
+        it 'updates package and package file', :aggregate_failures do
+          expect(Gitlab::ErrorTracking).not_to receive(:log_exception)
+
+          expect { subject }
+            .to not_change { Packages::Package.count }
+            .and not_change { Packages::PackageFile.count }
+            .and change { Packages::Helm::FileMetadatum.count }.from(0).to(1)
+            .and change { package.reload.status }.from('processing').to('default')
+
+          helm_file_metadatum = package_file.helm_file_metadatum
+
+          expect(helm_file_metadatum.channel).to eq(channel)
+          expect(helm_file_metadatum.metadata).to eq(expected_metadata)
+        end
+      end
+    end
+
+    context 'with invalid package file id' do
+      let(:package_file_id) { 5555 }
+
+      it "doesn't update helm_file_metadatum", :aggregate_failures do
+        expect { subject }
+          .to not_change { Packages::Package.count }
+          .and not_change { Packages::PackageFile.count }
+          .and not_change { Packages::Helm::FileMetadatum.count }
+          .and not_change { package.reload.status }
+      end
+    end
+
+    context 'with an empty package file' do
+      before do
+        expect_next_instance_of(Gem::Package::TarReader) do |tar_reader|
+          expect(tar_reader).to receive(:each).and_return([])
+        end
+      end
+
+      it_behaves_like 'handling error'
+    end
+
+    context 'with an invalid YAML' do
+      before do
+        expect_next_instance_of(Gem::Package::TarReader::Entry) do |entry|
+          expect(entry).to receive(:read).and_return('{')
+        end
+      end
+
+      it_behaves_like 'handling error'
+    end
+  end
+end