1 files changed, 56 insertions, 0 deletions
diff --git a/lib/api/helm_packages.rb b/lib/api/helm_packages.rb
new file mode 100644
index 00000000000..dc5630a1395
--- /dev/null
+++ b/lib/api/helm_packages.rb
@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+
+###
+# API endpoints for the Helm package registry
+module API
+  class HelmPackages < ::API::Base
+    helpers ::API::Helpers::PackagesHelpers
+    helpers ::API::Helpers::Packages::BasicAuthHelpers
+    include ::API::Helpers::Authentication
+
+    feature_category :package_registry
+
+    FILE_NAME_REQUIREMENTS = {
+      file_name: API::NO_SLASH_URL_PART_REGEX
+    }.freeze
+
+    content_type :binary, 'application/octet-stream'
+
+    authenticate_with do |accept|
+      accept.token_types(:personal_access_token, :deploy_token, :job_token)
+            .sent_through(:http_basic_auth)
+    end
+
+    before do
+      require_packages_enabled!
+    end
+
+    after_validation do
+      not_found! unless Feature.enabled?(:helm_packages, authorized_user_project)
+    end
+
+    params do
+      requires :id, type: String, desc: 'The ID or full path of a project'
+    end
+    resource :projects, requirements: API::NAMESPACE_OR_PROJECT_REQUIREMENTS do
+      namespace ':id/packages/helm' do
+        desc 'Download a chart' do
+          detail 'This feature was introduced in GitLab 14.0'
+        end
+        params do
+          requires :channel, type: String, desc: 'Helm channel', regexp: Gitlab::Regex.helm_channel_regex
+          requires :file_name, type: String, desc: 'Helm package file name'
+        end
+        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!
+
+          track_package_event('pull_package', :helm, project: authorized_user_project, namespace: authorized_user_project.namespace)
+
+          present_carrierwave_file!(package_file.file)
+        end
+      end
+    end
+  end
+end