Use the last Helm chart when downloading

As it is ordered by created_at DESC, .last! is actually the first.

Changelog: fixed

app/finders/packages/helm/package_files_finder.rb

@@ -6,6 +6,8 @@ module Packages
       DEFAULT_PACKAGE_FILES_COUNT = 20
       MAX_PACKAGE_FILES_COUNT = 1000
 
+      delegate :most_recent!, to: :execute
+
       def initialize(project, channel, params = {})
         @project = project
         @channel = channel

app/models/packages/package_file.rb

@@ -77,6 +77,10 @@ class Packages::PackageFile < ApplicationRecord
       .where(packages_conan_file_metadata: { conan_package_reference: conan_package_reference })
   end
 
+  def self.most_recent!
+    recent.first!
+  end
+
   mount_file_store_uploader Packages::PackageFileUploader
 
   update_project_statistics project_statistics_name: :packages_size

lib/api/helm_packages.rb

@@ -66,7 +66,7 @@ module API
         get ":channel/charts/:file_name.tgz", requirements: FILE_NAME_REQUIREMENTS do
           authorize_read_package!(authorized_user_project)
 
-          package_file = Packages::Helm::PackageFilesFinder.new(authorized_user_project, params[:channel], file_name: "#{params[:file_name]}.tgz").execute.last!
+          package_file = Packages::Helm::PackageFilesFinder.new(authorized_user_project, params[:channel], file_name: "#{params[:file_name]}.tgz").most_recent!
 
           track_package_event('pull_package', :helm, project: authorized_user_project, namespace: authorized_user_project.namespace)
 

spec/finders/packages/helm/package_files_finder_spec.rb

@@ -6,42 +6,51 @@ RSpec.describe ::Packages::Helm::PackageFilesFinder do
   let_it_be(:project1) { create(:project) }
   let_it_be(:project2) { create(:project) }
   let_it_be(:helm_package) { create(:helm_package, project: project1) }
-  let_it_be(:helm_package_file) { helm_package.package_files.first }
+  let_it_be(:helm_package_file1) { helm_package.package_files.first }
+  let_it_be(:helm_package_file2) { create(:helm_package_file, package: helm_package) }
   let_it_be(:debian_package) { create(:debian_package, project: project1) }
 
-  describe '#execute' do
-    let(:project) { project1 }
-    let(:channel) { 'stable' }
-    let(:params) { {} }
+  let(:project) { project1 }
+  let(:channel) { 'stable' }
+  let(:params) { {} }
+
+  let(:service) { described_class.new(project, channel, params) }
 
-    subject { described_class.new(project, channel, params).execute }
+  describe '#execute' do
+    subject { service.execute }
 
     context 'with empty params' do
-      it { is_expected.to match_array([helm_package_file]) }
+      it { is_expected.to eq([helm_package_file2, helm_package_file1]) }
     end
 
     context 'with another project' do
       let(:project) { project2 }
 
-      it { is_expected.to match_array([]) }
+      it { is_expected.to eq([]) }
     end
 
     context 'with another channel' do
       let(:channel) { 'staging' }
 
-      it { is_expected.to match_array([]) }
+      it { is_expected.to eq([]) }
     end
 
-    context 'with file_name' do
-      let(:params) { { file_name: helm_package_file.file_name } }
+    context 'with matching file_name' do
+      let(:params) { { file_name: helm_package_file1.file_name } }
 
-      it { is_expected.to match_array([helm_package_file]) }
+      it { is_expected.to eq([helm_package_file2, helm_package_file1]) }
     end
 
     context 'with another file_name' do
       let(:params) { { file_name: 'foobar.tgz' } }
 
-      it { is_expected.to match_array([]) }
+      it { is_expected.to eq([]) }
     end
   end
+
+  describe '#most_recent!' do
+    subject { service.most_recent! }
+
+    it { is_expected.to eq(helm_package_file2) }
+  end
 end

spec/models/packages/package_file_spec.rb

@@ -139,6 +139,10 @@ RSpec.describe Packages::PackageFile, type: :model do
     end
   end
 
+  describe '.most_recent!' do
+    it { expect(described_class.most_recent!).to eq(debian_package.package_files.last) }
+  end
+
   describe '#update_file_store callback' do
     let_it_be(:package_file) { build(:package_file, :nuget, size: nil) }
 

spec/requests/api/helm_packages_spec.rb

@@ -9,16 +9,18 @@ RSpec.describe API::HelmPackages do
   let_it_be_with_reload(:project) { create(:project, :public) }
   let_it_be(:deploy_token) { create(:deploy_token, read_package_registry: true, write_package_registry: true) }
   let_it_be(:project_deploy_token) { create(:project_deploy_token, deploy_token: deploy_token, project: project) }
-  let_it_be(:package) { create(:helm_package, project: project) }
+  let_it_be(:package) { create(:helm_package, project: project, without_package_files: true) }
+  let_it_be(:package_file1) { create(:helm_package_file, package: package) }
+  let_it_be(:package_file2) { create(:helm_package_file, package: package) }
 
   describe 'GET /api/v4/projects/:id/packages/helm/:channel/index.yaml' do
     it_behaves_like 'handling helm chart index requests' do
-      let(:url) { "/projects/#{project.id}/packages/helm/#{package.package_files.first.helm_channel}/index.yaml" }
+      let(:url) { "/projects/#{project.id}/packages/helm/stable/index.yaml" }
     end
   end
 
   describe 'GET /api/v4/projects/:id/packages/helm/:channel/charts/:file_name.tgz' do
-    let(:url) { "/projects/#{project.id}/packages/helm/#{package.package_files.first.helm_channel}/charts/#{package.name}-#{package.version}.tgz" }
+    let(:url) { "/projects/#{project.id}/packages/helm/stable/charts/#{package.name}-#{package.version}.tgz" }
 
     subject { get api(url), headers: headers }
 

spec/support/shared_examples/requests/api/helm_packages_shared_examples.rb

@@ -41,7 +41,7 @@ RSpec.shared_examples 'process helm service index request' do |user_type, status
 
       package_entry = yaml_response['entries'][package.name]
 
-      expect(package_entry.length).to eq(1)
+      expect(package_entry.length).to eq(2)
       expect(package_entry.first.keys).to contain_exactly('name', 'version', 'apiVersion', 'created', 'digest', 'urls')
       expect(package_entry.first['digest']).to eq('fd2b2fa0329e80a2a602c2bb3b40608bcd6ee5cf96cf46fd0d2800a4c129c9db')
       expect(package_entry.first['urls']).to eq(["charts/#{package.name}-#{package.version}.tgz"])
@@ -174,6 +174,13 @@ RSpec.shared_examples 'process helm download content request' do |user_type, sta
   context "for user type #{user_type}" do
     before do
       project.send("add_#{user_type}", user) if user_type != :anonymous && user_type != :not_a_member
+
+      expect_next_found_instance_of(::Packages::PackageFile) do |package_file|
+        expect(package_file).to receive(:file).and_wrap_original do |m, *args|
+          expect(package_file.id).to eq(package_file2.id)
+          m.call(*args)
+        end
+      end
     end
 
     it_behaves_like 'a package tracking event', 'API::HelmPackages', 'pull_package'