Add Golang Package type

- Add `golang` as a valid `Packages::Package#package_type`
- Add `golang_max_file_size` to `PlanLimits`
- Add `prefixed_semver_regex` to `Gitlab::Regex::Packages`
- Filter `Packages::Package#version` with `prefixed_semver_regex` for Go
- Make appropriate changes to GraphQL, specs, factories, and docs

app/models/packages/package.rb

@@ -40,12 +40,13 @@ class Packages::Package < ApplicationRecord
   validates :version, format: { with: Gitlab::Regex.conan_recipe_component_regex }, if: :conan?
   validates :version, format: { with: Gitlab::Regex.maven_version_regex }, if: -> { version? && maven? }
   validates :version, format: { with: Gitlab::Regex.pypi_version_regex }, if: :pypi?
+  validates :version, format: { with: Gitlab::Regex.prefixed_semver_regex }, if: :golang?
   validates :version,
     presence: true,
     format: { with: Gitlab::Regex.generic_package_version_regex },
     if: :generic?
 
-  enum package_type: { maven: 1, npm: 2, conan: 3, nuget: 4, pypi: 5, composer: 6, generic: 7 }
+  enum package_type: { maven: 1, npm: 2, conan: 3, nuget: 4, pypi: 5, composer: 6, generic: 7, golang: 8 }
 
   scope :with_name, ->(name) { where(name: name) }
   scope :with_name_like, ->(name) { where(arel_table[:name].matches(name)) }

changelogs/unreleased/add-golang-to-packages.yml

+---
+title: Add Go(lang) to Packages
+merge_request: 41712
+author: Ethan Reesor (@firelizzard)
+type: added

db/migrate/20200905013247_add_golang_package_max_file_size_to_plan_limits.rb

+# frozen_string_literal: true
+
+class AddGolangPackageMaxFileSizeToPlanLimits < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column(:plan_limits, :golang_max_file_size, :bigint, default: 100.megabytes, null: false)
+  end
+end

db/schema_migrations/20200905013247

+860c45fd6293f2f8f10d7351cb5a2fbab2cc9147e56b538cb62d75469b039ef0
\ No newline at end of file

db/structure.sql

@@ -14364,7 +14364,8 @@ CREATE TABLE plan_limits (
     npm_max_file_size bigint DEFAULT 524288000 NOT NULL,
     nuget_max_file_size bigint DEFAULT 524288000 NOT NULL,
     pypi_max_file_size bigint DEFAULT '3221225472'::bigint NOT NULL,
-    generic_packages_max_file_size bigint DEFAULT '5368709120'::bigint NOT NULL
+    generic_packages_max_file_size bigint DEFAULT '5368709120'::bigint NOT NULL,
+    golang_max_file_size bigint DEFAULT 104857600 NOT NULL
 );
 
 CREATE SEQUENCE plan_limits_id_seq

doc/api/graphql/reference/gitlab_schema.graphql

@@ -11511,6 +11511,11 @@ enum PackageTypeEnum {
   """
   GENERIC
 
+  """
+  Packages from the golang package manager
+  """
+  GOLANG
+
   """
   Packages from the maven package manager
   """

doc/api/graphql/reference/gitlab_schema.json

@@ -34393,6 +34393,12 @@
               "description": "Packages from the generic package manager",
               "isDeprecated": false,
               "deprecationReason": null
+            },
+            {
+              "name": "GOLANG",
+              "description": "Packages from the golang package manager",
+              "isDeprecated": false,
+              "deprecationReason": null
             }
           ],
           "possibleTypes": null

doc/api/graphql/reference/index.md

@@ -3279,6 +3279,7 @@ Values for sorting projects.
 | `COMPOSER` | Packages from the composer package manager |
 | `CONAN` | Packages from the conan package manager |
 | `GENERIC` | Packages from the generic package manager |
+| `GOLANG` | Packages from the golang package manager |
 | `MAVEN` | Packages from the maven package manager |
 | `NPM` | Packages from the npm package manager |
 | `NUGET` | Packages from the nuget package manager |

doc/api/packages.md

@@ -26,7 +26,7 @@ GET /projects/:id/packages
 | `id`      | integer/string | yes | ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) |
 | `order_by`| string | no | The field to use as order. One of `created_at` (default), `name`, `version`, or `type`. |
 | `sort`    | string | no | The direction of the order, either `asc` (default) for ascending order or `desc` for descending order. |
-| `package_type` | string | no | Filter the returned packages by type. One of `conan`, `maven`, `npm`, `pypi`, `composer`, or `nuget`. (_Introduced in GitLab 12.9_)
+| `package_type` | string | no | Filter the returned packages by type. One of `conan`, `maven`, `npm`, `pypi`, `composer`, `nuget`, or `golang`. (_Introduced in GitLab 12.9_)
 | `package_name` | string | no | Filter the project packages with a fuzzy search by name. (_Introduced in GitLab 12.9_)
 
 ```shell
@@ -73,7 +73,7 @@ GET /groups/:id/packages
 | `exclude_subgroups` | boolean | false | If the parameter is included as true, packages from projects from subgroups are not listed. Default is `false`. |
 | `order_by`| string | no | The field to use as order. One of `created_at` (default), `name`, `version`, `type`, or `project_path`. |
 | `sort`    | string | no | The direction of the order, either `asc` (default) for ascending order or `desc` for descending order. |
-| `package_type` | string | no | Filter the returned packages by type. One of `conan`, `maven`, `npm`, `pypi`, `composer`, or `nuget`. (_Introduced in GitLab 12.9_) |
+| `package_type` | string | no | Filter the returned packages by type. One of `conan`, `maven`, `npm`, `pypi`, `composer`, `nuget`, or `golang`. (_Introduced in GitLab 12.9_) |
 | `package_name` | string | no | Filter the project packages with a fuzzy search by name. (_[Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/30980) in GitLab 13.0_)
 
 ```shell

lib/gitlab/regex.rb

@@ -80,6 +80,11 @@ module Gitlab
         @semver_regex ||= Regexp.new("\\A#{::Gitlab::Regex.unbounded_semver_regex.source}\\z", ::Gitlab::Regex.unbounded_semver_regex.options)
       end
 
+      def prefixed_semver_regex
+        # identical to semver_regex, except starting with 'v'
+        @prefixed_semver_regex ||= Regexp.new("\\Av#{::Gitlab::Regex.unbounded_semver_regex.source}\\z", ::Gitlab::Regex.unbounded_semver_regex.options)
+      end
+
       def go_package_regex
         # A Go package name looks like a URL but is not; it:
         #   - Must not have a scheme, such as http:// or https://

spec/factories/packages.rb

@@ -91,6 +91,12 @@ FactoryBot.define do
       end
     end
 
+    factory :golang_package do
+      sequence(:name) { |n| "golang.org/x/pkg-#{n}"}
+      sequence(:version) { |n| "v1.0.#{n}" }
+      package_type { :golang }
+    end
+
     factory :conan_package do
       conan_metadatum
 

spec/graphql/types/package_type_enum_spec.rb

@@ -4,6 +4,6 @@ require 'spec_helper'
 
 RSpec.describe GitlabSchema.types['PackageTypeEnum'] do
   it 'exposes all package types' do
-    expect(described_class.values.keys).to contain_exactly(*%w[MAVEN NPM CONAN NUGET PYPI COMPOSER GENERIC])
+    expect(described_class.values.keys).to contain_exactly(*%w[MAVEN NPM CONAN NUGET PYPI COMPOSER GENERIC GOLANG])
   end
 end

spec/lib/gitlab/regex_spec.rb

@@ -448,4 +448,17 @@ RSpec.describe Gitlab::Regex do
     it { is_expected.not_to match('my file name') }
     it { is_expected.not_to match('!!()()') }
   end
+
+  describe '.prefixed_semver_regex' do
+    subject { described_class.prefixed_semver_regex }
+
+    it { is_expected.to match('v1.2.3') }
+    it { is_expected.to match('v1.2.3-beta') }
+    it { is_expected.to match('v1.2.3-alpha.3') }
+    it { is_expected.not_to match('v1') }
+    it { is_expected.not_to match('v1.2') }
+    it { is_expected.not_to match('v1./2.3') }
+    it { is_expected.not_to match('v../../../../../1.2.3') }
+    it { is_expected.not_to match('v%2e%2e%2f1.2.3') }
+  end
 end

spec/support/shared_examples/services/packages_shared_examples.rb

@@ -170,6 +170,7 @@ RSpec.shared_examples 'filters on each package_type' do |is_project: false|
   let_it_be(:package5) { create(:pypi_package, project: project) }
   let_it_be(:package6) { create(:composer_package, project: project) }
   let_it_be(:package7) { create(:generic_package, project: project) }
+  let_it_be(:package8) { create(:golang_package, project: project) }
 
   Packages::Package.package_types.keys.each do |package_type|
     context "for package type #{package_type}" do