Add License Management API to the backend

config/routes/project.rb

@@ -519,6 +519,10 @@ constraints(::Constraints::ProjectUrlConstrainer.new) do
       # its preferable to keep it below all other project routes
       draw :wiki
       draw :repository
+
+      ## EE-specific
+      resources :managed_licenses, only: [:index, :show, :new, :create, :edit, :update, :destroy]
+      ## EE-specific
     end
 
     resources(:projects,

db/schema.rb

@@ -2463,6 +2463,20 @@ ActiveRecord::Schema.define(version: 20180722103201) do
   add_index "snippets", ["updated_at"], name: "index_snippets_on_updated_at", using: :btree
   add_index "snippets", ["visibility_level"], name: "index_snippets_on_visibility_level", using: :btree
 
+  create_table "software_license_policies", force: :cascade do |t|
+    t.integer "project_id", null: false
+    t.integer "software_license_id", null: false
+    t.integer "approval_status", default: 0, null: false
+  end
+
+  add_index "software_license_policies", ["project_id", "software_license_id"], name: "index_software_license_policies_unique_per_project", unique: true, using: :btree
+
+  create_table "software_licenses", force: :cascade do |t|
+    t.string "name", null: false
+  end
+
+  add_index "software_licenses", ["name"], name: "index_software_licenses_on_name", using: :btree
+
   create_table "spam_logs", force: :cascade do |t|
     t.integer "user_id"
     t.string "source_ip"
@@ -3021,6 +3035,8 @@ ActiveRecord::Schema.define(version: 20180722103201) do
   add_foreign_key "services", "projects", name: "fk_71cce407f9", on_delete: :cascade
   add_foreign_key "slack_integrations", "services", on_delete: :cascade
   add_foreign_key "snippets", "projects", name: "fk_be41fd4bb7", on_delete: :cascade
+  add_foreign_key "software_license_policies", "projects", on_delete: :cascade
+  add_foreign_key "software_license_policies", "software_licenses", on_delete: :cascade
   add_foreign_key "subscriptions", "projects", on_delete: :cascade
   add_foreign_key "system_note_metadata", "notes", name: "fk_d83a918cb1", on_delete: :cascade
   add_foreign_key "term_agreements", "application_setting_terms", column: "term_id"

doc/api/README.md

@@ -38,6 +38,7 @@ following locations:
 - [Keys](keys.md)
 - [Labels](labels.md)
 - [License](license.md)
+- [Managed licenses](managed_licenses.md) **[ULTIMATE]**
 - [Markdown](markdown.md)
 - [Merge Requests](merge_requests.md)
 - [Merge Request Approvals](merge_request_approvals.md) **[STARTER]**

doc/api/managed_licenses.md

+# Managed Licenses API **[ULTIMATE]**
+
+## List managed licenses
+
+Get all managed licenses for a given project.
+
+```
+GET /projects/:id/managed_licenses
+```
+
+| Attribute | Type    | Required | Description           |
+| --------- | ------- | -------- | --------------------- |
+| `id`      | integer/string    | yes      | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) owned by the authenticated user |
+
+```bash
+curl --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v4/projects/1/managed_licenses
+```
+
+Example response:
+
+```json
+[
+  {
+    "id": 1,
+    "name": "MIT",
+    "approval_status": "approved"
+  },
+  {
+    "id": 3,
+    "name": "ISC",
+    "approval_status": "blacklisted"
+  }
+]
+```
+
+## Show an existing managed license
+
+Shows an existing managed license.
+
+```
+GET /projects/:id/managed_licenses/:managed_license_id
+```
+
+| Attribute       | Type    | Required                          | Description                      |
+| --------------- | ------- | --------------------------------- | -------------------------------  |
+| `id`      | integer/string    | yes      | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) owned by the authenticated user |
+| `managed_license_id`      | integer/string    | yes      | The ID or URL-encoded name of the license belonging to the project |
+
+```bash
+curl --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v4/projects/1/managed_licenses/6"
+```
+
+Example response:
+
+```json
+{
+  "id": 1,
+  "name": "MIT",
+  "approval_status": "blacklisted"
+}
+```
+
+## Create a new managed license
+
+Creates a new managed license for the given project with the given name and approval status.
+
+```
+POST /projects/:id/managed_licenses
+```
+
+| Attribute     | Type    | Required | Description                  |
+| ------------- | ------- | -------- | ---------------------------- |
+| `id`      | integer/string    | yes      | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) owned by the authenticated user |
+| `name`        | string  | yes      | The name of the managed license        |
+| `approval_status`       | string  | yes      | The approval status. "approved" or "blacklisted" |
+
+```bash
+curl --data "name=MIT&approval_status=blacklisted" --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v4/projects/1/managed_licenses"
+```
+
+Example response:
+
+```json
+{
+  "id": 1,
+  "name": "MIT",
+  "approval_status": "approved"
+}
+```
+
+## Delete a managed license
+
+Deletes a managed license with a given id.
+
+```
+DELETE /projects/:id/managed_licenses/:managed_license_id
+```
+
+| Attribute | Type    | Required | Description           |
+| --------- | ------- | -------- | --------------------- |
+| `id`      | integer/string    | yes      | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) owned by the authenticated user |
+| `managed_license_id`      | integer/string    | yes      | The ID or URL-encoded name of the license belonging to the project |
+
+```bash
+curl --request DELETE --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v4/projects/1/managed_licenses/4"
+```
+
+When successful, it replies with an HTTP 204 response. 
+
+## Edit an existing managed license
+
+Updates an existing managed license with a new approval status.
+
+```
+PATCH /projects/:id/managed_licenses/:managed_license_id
+```
+
+| Attribute       | Type    | Required                          | Description                      |
+| --------------- | ------- | --------------------------------- | -------------------------------  |
+| `id`      | integer/string    | yes      | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) owned by the authenticated user |
+| `managed_license_id`      | integer/string    | yes      | The ID or URL-encoded name of the license belonging to the project |
+| `approval_status`       | string  | yes      | The approval status. "approved" or "blacklisted" |
+
+```bash
+curl --request PATCH --data "approval_status=blacklisted" --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v4/projects/1/managed_licenses/6"
+```
+
+Example response:
+
+```json
+{
+  "id": 1,
+  "name": "MIT",
+  "approval_status": "blacklisted"
+}
+```

ee/app/controllers/projects/managed_licenses_controller.rb

+# frozen_string_literal: true
+
+class Projects::ManagedLicensesController < Projects::ApplicationController
+  before_action :software_license_policy, only: [:show, :edit, :update, :destroy]
+  before_action :authorize_can_read!, only: [:index, :show]
+  before_action :authorize_can_admin!, only: [:new, :create, :edit, :update, :destroy]
+
+  def index
+    respond_to do |format|
+      format.json do
+        render_software_license_policies
+      end
+    end
+  end
+
+  def show
+    respond_to do |format|
+      format.json do
+        render_software_license_policy
+      end
+    end
+  end
+
+  def new
+    @software_license_policy = @project.software_license_policies.new
+  end
+
+  def create
+    result = SoftwareLicensePolicies::CreateService.new(
+      @project,
+      current_user,
+      software_license_policies_params
+    ).execute
+
+    if result[:status] == :success
+      @software_license_policy = result[:software_license_policy]
+
+      respond_to do |format|
+        format.json { render_software_license_policy }
+      end
+    else
+      respond_to do |format|
+        format.json { render_error(result[:message], 400) }
+      end
+    end
+  end
+
+  def edit
+  end
+
+  def update
+    result = SoftwareLicensePolicies::UpdateService.new(
+      @project,
+      current_user,
+      software_license_policies_params
+    ).execute(@software_license_policy)
+
+    if result[:status] == :success
+      respond_to do |format|
+        format.json { render_software_license_policy }
+      end
+    else
+      respond_to do |format|
+        format.json { render_error(result[:message], 400) }
+      end
+    end
+  end
+
+  def destroy
+    @software_license_policy.destroy!
+
+    respond_to do |format|
+      format.json { render_ok }
+    end
+  end
+
+  private
+
+  def respond_400
+    head :bad_request
+  end
+
+  # Fetch the existing software license policy when given an id or name
+  def software_license_policy
+    id = params[:id]
+    id = CGI.unescape(id) unless id.is_a?(Integer) || id =~ /^\d+$/
+    @software_license_policy ||= SoftwareLicensePoliciesFinder.new(current_user, project).find_by_name_or_id(id)
+
+    if @software_license_policy.nil?
+      # The license was not found
+      render_404
+    end
+  end
+
+  def render_ok
+    render status: :ok, nothing: true
+  end
+
+  def render_software_license_policy
+    render status: :ok, json: ManagedLicenseSerializer.new.represent(@software_license_policy)
+  end
+
+  def render_software_license_policies
+    render status: :ok, json: { software_license_policies: ManagedLicenseSerializer.new.represent(@project.software_license_policies) }
+  end
+
+  def render_error(error, status = 400)
+    render json: error, status: status
+  end
+
+  def software_license_policies_params
+    # Require the presence of an hash containing the software license policy fields
+    params.require(:managed_license).permit(:name, :approval_status)
+  end
+
+  def authorize_can_read!
+    render_404 unless can?(current_user, :read_software_license_policy, @project)
+  end
+
+  def authorize_can_admin!
+    authorize_can_read!
+    render_403 unless can?(current_user, :admin_software_license_policy, @project)
+  end
+end

ee/app/finders/software_license_policies_finder.rb

+# frozen_string_literal: true
+
+class SoftwareLicensePoliciesFinder
+  include Gitlab::Allowable
+  include FinderMethods
+
+  attr_accessor :current_user, :project
+
+  def initialize(current_user, project)
+    @current_user = current_user
+    @project = project
+  end
+
+  def find_by_name_or_id(id)
+    return nil unless can?(current_user, :read_software_license_policy, project)
+
+    software_licenses = SoftwareLicense.arel_table
+    software_license_policies = SoftwareLicensePolicy.arel_table
+    project.software_license_policies.joins(:software_license).where(
+      software_licenses[:name].eq(id).or(software_license_policies[:id].eq(id))
+    ).take
+  end
+end

ee/app/models/ee/project.rb

@@ -34,6 +34,8 @@ module EE
       has_many :audit_events, as: :entity
       has_many :path_locks
       has_many :vulnerability_feedback
+      has_many :software_license_policies, inverse_of: :project, class_name: 'SoftwareLicensePolicy'
+      accepts_nested_attributes_for :software_license_policies, allow_destroy: true
 
       has_many :sourced_pipelines, class_name: 'Ci::Sources::Pipeline', foreign_key: :source_project_id
 

ee/app/models/software_license.rb

+# frozen_string_literal: true
+
+# This class represents a software license.
+# For use in the License Management feature.
+class SoftwareLicense < ActiveRecord::Base
+  include Presentable
+
+  validates :name, presence: true
+
+  scope :ordered, -> { order(:name) }
+end

ee/app/models/software_license_policy.rb

+# frozen_string_literal: true
+
+# This class represents a software license policy. Which means the fact that the user
+# approves or not of the use of a certain software license in their project.
+# For use in the License Management feature.
+class SoftwareLicensePolicy < ActiveRecord::Base
+  include Presentable
+
+  # Only allows modification of the approval status
+  FORM_EDITABLE = %i[approval_status].freeze
+
+  belongs_to :project, inverse_of: :software_license_policies
+  belongs_to :software_license, -> { readonly }
+  attr_readonly :software_license
+
+  # Licenses must be approved or blacklisted.
+  enum approval_status: {
+      blacklisted: 0,
+      approved: 1
+  }
+
+  # Software license is mandatory, it contains the license informations.
+  validates_associated :software_license
+  validates_presence_of :software_license
+
+  validates_presence_of :project
+  validates :approval_status, presence: true
+
+  # A license is unique for its project since it can't be approved and blacklisted.
+  validates :software_license, uniqueness: { scope: :project_id }
+
+  scope :ordered, -> { SoftwareLicensePolicy.includes(:software_license).order("software_licenses.name ASC") }
+
+  def name
+    software_license.name
+  end
+end

ee/app/policies/ee/project_policy.rb

@@ -7,6 +7,7 @@ module EE
       issue_link
       approvers
       vulnerability_feedback
+      license_management
     ].freeze
 
     prepended do
@@ -53,6 +54,11 @@ module EE
         @subject.feature_available?(:prometheus_alerts, @user)
       end
 
+      with_scope :subject
+      condition(:license_management_enabled) do
+        @subject.feature_available?(:license_management)
+      end
+
       rule { admin }.enable :change_repository_storage
 
       rule { support_bot }.enable :guest_access
@@ -90,6 +96,8 @@ module EE
 
       rule { can?(:read_project) }.enable :read_vulnerability_feedback
 
+      rule { license_management_enabled & can?(:read_project) }.enable :read_software_license_policy
+
       rule { repository_mirrors_enabled & ((mirror_available & can?(:admin_project)) | admin) }.enable :admin_mirror
 
       rule { deploy_board_disabled & ~is_development }.prevent :read_deploy_board
@@ -100,6 +108,8 @@ module EE
         enable :update_approvers
       end
 
+      rule { license_management_enabled & can?(:maintainer_access) }.enable :admin_software_license_policy
+
       rule { pod_logs_enabled & can?(:maintainer_access) }.enable :read_pod_logs
       rule { prometheus_alerts_enabled & can?(:maintainer_access) }.enable :read_prometheus_alerts
 

ee/app/serializers/ee/merge_request_widget_entity.rb

 module EE
   module MergeRequestWidgetEntity
+    include ::API::Helpers::RelatedResourcesHelpers
     extend ActiveSupport::Concern
 
     prepended do
@@ -99,6 +100,14 @@ module EE
                                           merge_request.base_license_management_artifact,
                                           path: Ci::Build::LICENSE_MANAGEMENT_FILE)
         end
+
+        expose :managed_licenses_path do |merge_request|
+          api_v4_projects_managed_licenses_path(id: merge_request.source_project.id)
+        end
+
+        expose :can_manage_licenses do |merge_request|
+          can?(current_user, :admin_software_license_policy, merge_request)
+        end
       end
 
       # expose_sast_container_data? is deprecated and replaced with expose_container_scanning_data? (#5778)

ee/app/serializers/managed_license_entity.rb

+# frozen_string_literal: true
+
+class ManagedLicenseEntity < Grape::Entity
+  expose :id
+  expose :approval_status
+  expose :software_license, merge: true do
+    expose :name
+  end
+end

ee/app/serializers/managed_license_serializer.rb

+# frozen_string_literal: true
+
+class ManagedLicenseSerializer < BaseSerializer
+  entity ManagedLicenseEntity
+end

ee/app/services/software_license_policies/create_service.rb

+# frozen_string_literal: true
+
+# Managed license creation service. For use in the managed license controller.
+module SoftwareLicensePolicies
+  class CreateService < ::BaseService
+    def initialize(project, user, params)
+      super(project, user, params.with_indifferent_access)
+    end
+
+    # Returns the created managed license.
+    def execute
+      return error("", 403) unless can?(@current_user, :admin_software_license_policy, @project)
+
+      # Load or create the software license
+      name = params.delete(:name)
+
+      software_license = SoftwareLicense.transaction do
+        begin
+          SoftwareLicense.transaction(requires_new: true) do
+            SoftwareLicense.find_or_create_by(name: name)
+          end
+        rescue ActiveRecord::RecordNotUnique
+          retry
+        end
+      end
+
+      # Add the software license to params
+      params[:software_license] = software_license
+
+      begin
+        software_license_policy = @project.software_license_policies.create(params)
+      rescue ArgumentError => ex
+        return error(ex.message, 400)
+      end
+
+      if software_license_policy.errors.any?
+        return error(software_license_policy.errors.full_messages.join("\n"), 400)
+      end
+
+      success(software_license_policy: software_license_policy)
+    end
+  end
+end

ee/app/services/software_license_policies/update_service.rb

+# frozen_string_literal: true
+
+# Managed license update service. For use in the managed license controller.
+module SoftwareLicensePolicies
+  class UpdateService < ::BaseService
+    def initialize(project, user, params)
+      super(project, user, params.with_indifferent_access)
+    end
+
+    # returns the updated managed license
+    def execute(software_license_policy)
+      return error("", 403) unless can?(@current_user, :admin_software_license_policy, @project)
+
+      @params = @params.slice(*SoftwareLicensePolicy::FORM_EDITABLE)
+
+      begin
+        software_license_policy.update(params)
+      rescue ArgumentError => ex
+        return error(ex.message, 400)
+      end
+
+      success(software_license_policy: software_license_policy)
+    end
+  end
+end

ee/changelogs/unreleased/5488_license_management_app_blacklist_backend.yml

+---
+title: Add an API endpoint for managed licenses of a project.
+merge_request: 6246
+author:
+type: added

ee/db/migrate/20180621100024_create_software_licenses.rb

+# frozen_string_literal: true
+
+# A software license. Used in the License Management feature for CI/CD.
+class CreateSoftwareLicenses < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def change
+    create_table :software_licenses do |t|
+      t.string :name, null: false, unique: true, index: true
+    end
+  end
+end

ee/db/migrate/20180621100025_create_software_license_policies.rb

+# frozen_string_literal: true
+
+class CreateSoftwareLicensePolicies < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  INDEX_NAME = 'index_software_license_policies_unique_per_project'
+
+  disable_ddl_transaction!
+
+  def up
+    create_table :software_license_policies do |t|
+      t.references :project, index: false, foreign_key: { on_delete: :cascade }, null: false
+      t.references :software_license, index: false, foreign_key: { on_delete: :cascade }, null: false
+      t.integer :approval_status, null: false, default: 0 # Defaults to blacklisted
+    end
+
+    add_concurrent_index :software_license_policies,
+      [:project_id, :software_license_id],
+      unique: true,
+      name: INDEX_NAME
+  end
+
+  def down
+    if foreign_keys_for(:software_license_policies, :project_id).any?
+      remove_foreign_key :software_license_policies, column: :project_id
+    end
+
+    if foreign_keys_for(:software_license_policies, :software_license_id).any?
+      remove_foreign_key :software_license_policies, column: :software_license_id
+    end
+
+    if index_exists?(:software_license_policies, [:project_id, :software_license_id])
+      remove_concurrent_index :software_license_policies, [:project_id, :software_license_id]
+    end
+
+    if table_exists?(:software_license_policies)
+      drop_table :software_license_policies
+    end
+  end
+end

ee/lib/api/managed_licenses.rb

+# frozen_string_literal: true
+
+module API
+  class ManagedLicenses < Grape::API
+    include PaginationParams
+
+    before { authenticate! }
+
+    helpers do
+      # Make the software license policy specified by id in the request available
+      def software_license_policy
+        id = params[:managed_license_id]
+        @software_license_policy ||= SoftwareLicensePoliciesFinder.new(current_user, user_project).find_by_name_or_id(id)
+      end
+
+      def authorize_can_read!
+        authorize!(:read_software_license_policy, user_project)
+      end
+
+      def authorize_can_admin!
+        authorize!(:admin_software_license_policy, user_project)
+      end
+    end
+
+    params do
+      requires :id, type: String, desc: 'The ID of a project'
+    end
+
+    resource :projects, requirements: API::PROJECT_ENDPOINT_REQUIREMENTS  do
+      desc 'Get project software license policies' do
+        success Entities::ManagedLicense
+      end
+      params do
+        use :pagination
+      end
+      get ':id/managed_licenses' do
+        authorize_can_read!
+
+        software_license_policies = user_project.software_license_policies
+        present paginate(software_license_policies), with: Entities::ManagedLicense
+      end
+
+      desc 'Get a specific software license policy from a project' do
+        success Entities::ManagedLicense
+      end
+      get ':id/managed_licenses/:managed_license_id', requirements: { managed_license_id: /.*/ } do
+        authorize_can_read!
+        break not_found!('SoftwareLicensePolicy') unless software_license_policy
+
+        present software_license_policy, with: Entities::ManagedLicense
+      end
+
+      desc 'Create a new software license policy in a project' do
+        success Entities::ManagedLicense
+      end
+      params do
+        requires :name, type: String, desc: 'The name of the license'
+        requires :approval_status,
+          type: String,
+          values: %w(approved blacklisted),
+          desc: 'The approval status of the license. "blacklisted" or "approved".'
+      end
+      post ':id/managed_licenses' do
+        authorize_can_admin!
+
+        result = SoftwareLicensePolicies::CreateService.new(
+          user_project,
+          current_user,
+          declared_params(include_missing: false)
+        ).execute
+        created_software_license_policy = result[:software_license_policy]
+
+        if result[:status] == :success
+          present created_software_license_policy, with: Entities::ManagedLicense
+        else
+          render_api_error!(result[:message], result[:http_status])
+        end
+      end
+
+      desc 'Update an existing software license policy from a project' do
+        success Entities::ManagedLicense
+      end
+      params do
+        optional :name, type: String, desc: 'The name of the license'
+        optional :approval_status,
+          type: String,
+          values: %w(approved blacklisted),
+          desc: 'The approval status of the license. "blacklisted" or "approved".'
+      end
+      patch ':id/managed_licenses/:managed_license_id', requirements: { managed_license_id: /.*/ } do
+        authorize_can_admin!
+        break not_found!('SoftwareLicensePolicy') unless software_license_policy
+
+        result = SoftwareLicensePolicies::UpdateService.new(
+          user_project,
+          current_user,
+          declared_params(include_missing: false).except(:id, :name)
+        ).execute(@software_license_policy)
+
+        if result[:status] == :success
+          present @software_license_policy, with: Entities::ManagedLicense
+        else
+          render_api_error!(result[:message], result[:http_status])
+        end
+      end
+
+      desc 'Delete an existing software license policy from a project' do
+        success Entities::ManagedLicense
+      end
+      delete ':id/managed_licenses/:managed_license_id', requirements: { managed_license_id: /.*/ } do
+        authorize_can_admin!
+        not_found!('SoftwareLicensePolicy') unless software_license_policy
+
+        status 204
+        software_license_policy.destroy!
+      end
+    end
+  end
+end

ee/spec/factories/software_license.rb

+# frozen_string_literal: true
+
+FactoryBot.define do
+  factory :software_license, class: SoftwareLicense do
+    sequence(:name) { |n| "SOFTWARE-LICENSE-2.7/example_#{n}" }
+  end
+end

ee/spec/factories/software_license_policy.rb

+# frozen_string_literal: true
+
+FactoryBot.define do
+  factory :software_license_policy, class: SoftwareLicensePolicy do
+    approval_status 1
+    project
+    software_license
+  end
+end

ee/spec/finders/software_license_policies_finder_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe SoftwareLicensePoliciesFinder do
+  let(:project) { create(:project) }
+  let(:software_license_policy) { create(:software_license_policy, project: project) }
+
+  let(:user) do
+    create(:user).tap do |u|
+      project.add_maintainer(u)
+    end
+  end
+
+  let(:finder) { described_class.new(user, project) }
+
+  before do
+    stub_licensed_features(license_management: true)
+  end
+
+  it 'finds the software license policy' do
+    expect(finder.find_by_name_or_id(software_license_policy.name)).to eq(software_license_policy)
+  end
+end

ee/spec/fixtures/api/schemas/software_license_policies.json

+{
+  "type": "object",
+  "required": ["software_license_policies"],
+  "properties": {
+    "software_license_policies": {
+      "type": "array",
+      "items": { "$ref": "software_license_policy.json" }
+    }
+  },
+  "additionalProperties": false
+}

ee/spec/fixtures/api/schemas/software_license_policy.json

+{
+  "type": "object",
+  "required": [
+    "id",
+    "name",
+    "approval_status"
+  ],
+  "properties": {
+    "id": { "type": "integer" },
+    "name": { "type": "string" },
+    "approval_status": { "type": "string" }
+  },
+  "additionalProperties": false
+}

ee/spec/models/software_license_policy_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe SoftwareLicensePolicy do
+  subject { build(:software_license_policy) }
+
+  describe 'validations' do
+    it { is_expected.to include_module(Presentable) }
+    it { is_expected.to validate_presence_of(:software_license) }
+    it { is_expected.to validate_presence_of(:project) }
+    it { is_expected.to validate_presence_of(:approval_status) }
+    it { is_expected.to validate_uniqueness_of(:software_license).scoped_to(:project_id).with_message(/has already been taken/) }
+  end
+end

ee/spec/models/software_license_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe SoftwareLicense do
+  subject { build(:software_license) }
+
+  describe 'validations' do
+    it { is_expected.to include_module(Presentable) }
+    it { is_expected.to validate_presence_of(:name) }
+  end
+end

ee/spec/policies/project_policy_spec.rb

@@ -355,4 +355,136 @@ describe ProjectPolicy do
       it { is_expected.to be_disallowed(:read_project_security_dashboard) }
     end
   end
+
+  describe 'admin_license_management' do
+    before do
+      stub_licensed_features(license_management: true)
+    end
+
+    subject { described_class.new(current_user, project) }
+
+    context 'without license management feature available' do
+      before do
+        stub_licensed_features(license_management: false)
+      end
+
+      let(:current_user) { admin }
+
+      it { is_expected.to be_disallowed(:admin_software_license_policy) }
+    end
+
+    context 'with admin' do
+      let(:current_user) { admin }
+
+      it { is_expected.to be_allowed(:admin_software_license_policy) }
+    end
+
+    context 'with owner' do
+      let(:current_user) { owner }
+
+      it { is_expected.to be_allowed(:admin_software_license_policy) }
+    end
+
+    context 'with maintainer' do
+      let(:current_user) { maintainer }
+
+      it { is_expected.to be_allowed(:admin_software_license_policy) }
+    end
+
+    context 'with developer' do
+      let(:current_user) { developer }
+
+      it { is_expected.to be_disallowed(:admin_software_license_policy) }
+    end
+
+    context 'with reporter' do
+      let(:current_user) { reporter }
+
+      it { is_expected.to be_disallowed(:admin_software_license_policy) }
+    end
+
+    context 'with guest' do
+      let(:current_user) { guest }
+
+      it { is_expected.to be_disallowed(:admin_software_license_policy) }
+    end
+
+    context 'with non member' do
+      let(:current_user) { create(:user) }
+
+      it { is_expected.to be_disallowed(:admin_software_license_policy) }
+    end
+
+    context 'with anonymous' do
+      let(:current_user) { nil }
+
+      it { is_expected.to be_disallowed(:admin_software_license_policy) }
+    end
+  end
+
+  describe 'read_license_management' do
+    before do
+      stub_licensed_features(license_management: true)
+    end
+
+    subject { described_class.new(current_user, project) }
+
+    context 'without license management feature available' do
+      before do
+        stub_licensed_features(license_management: false)
+      end
+
+      let(:current_user) { admin }
+
+      it { is_expected.to be_disallowed(:read_software_license_policy) }
+    end
+
+    context 'with admin' do
+      let(:current_user) { admin }
+
+      it { is_expected.to be_allowed(:read_software_license_policy) }
+    end
+
+    context 'with owner' do
+      let(:current_user) { owner }
+
+      it { is_expected.to be_allowed(:read_software_license_policy) }
+    end
+
+    context 'with maintainer' do
+      let(:current_user) { maintainer }
+
+      it { is_expected.to be_allowed(:read_software_license_policy) }
+    end
+
+    context 'with developer' do
+      let(:current_user) { developer }
+
+      it { is_expected.to be_allowed(:read_software_license_policy) }
+    end
+
+    context 'with reporter' do
+      let(:current_user) { reporter }
+
+      it { is_expected.to be_allowed(:read_software_license_policy) }
+    end
+
+    context 'with guest' do
+      let(:current_user) { guest }
+
+      it { is_expected.to be_allowed(:read_software_license_policy) }
+    end
+
+    context 'with non member' do
+      let(:current_user) { create(:user) }
+
+      it { is_expected.to be_allowed(:read_software_license_policy) }
+    end
+
+    context 'with anonymous' do
+      let(:current_user) { nil }
+
+      it { is_expected.to be_allowed(:read_software_license_policy) }
+    end
+  end
 end

ee/spec/serializers/managed_license_entity_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe ManagedLicenseEntity do
+  let(:software_license_policy) { create(:software_license_policy) }
+  let(:entity) { described_class.new(software_license_policy) }
+
+  describe '#as_json' do
+    subject { entity.as_json }
+
+    it 'contains required fields' do
+      expect(subject).to include(:id, :name, :approval_status)
+    end
+  end
+end

ee/spec/serializers/merge_request_widget_entity_spec.rb

@@ -116,6 +116,8 @@ describe MergeRequestWidgetEntity do
     expect(subject.as_json).to include(:license_management)
     expect(subject.as_json[:license_management]).to include(:head_path)
     expect(subject.as_json[:license_management]).to include(:base_path)
+    expect(subject.as_json[:license_management]).to include(:managed_licenses_path)
+    expect(subject.as_json[:license_management]).to include(:can_manage_licenses)
   end
 
   # methods for old artifact are deprecated and replaced with ones for the new name (#5779)

ee/spec/services/software_license_policies/create_service_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe SoftwareLicensePolicies::CreateService do
+  let(:project) { create(:project)}
+  let(:params) { { name: 'ExamplePL/2.1', approval_status: 'blacklisted' } }
+
+  let(:user) do
+    create(:user).tap do |u|
+      project.add_maintainer(u)
+    end
+  end
+
+  before do
+    stub_licensed_features(license_management: true)
+  end
+
+  subject { described_class.new(project, user, params).execute }
+
+  describe '#execute' do
+    context 'with license management unavailable' do
+      before do
+        stub_licensed_features(license_management: false)
+      end
+
+      it 'does not creates a software license policy' do
+        expect { subject }.to change { project.software_license_policies.count }.by(0)
+      end
+    end
+
+    context 'with a user who is allowed to admin' do
+      it 'creates one software license policy correctly' do
+        expect { subject }.to change { project.software_license_policies.count }.from(0).to(1)
+
+        software_license_policy = project.software_license_policies.last
+        expect(software_license_policy).to be_persisted
+        expect(software_license_policy.name).to eq('ExamplePL/2.1')
+        expect(software_license_policy.approval_status).to eq('blacklisted')
+      end
+    end
+
+    context 'with a user not allowed to admin' do
+      let(:user) { create(:user) }
+
+      it 'does not create a software license policy' do
+        expect { subject }.to change { project.software_license_policies.count }.by(0)
+      end
+    end
+  end
+end

ee/spec/services/software_license_policies/update_service_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe SoftwareLicensePolicies::UpdateService do
+  let(:project) { create(:project)}
+
+  let(:user) do
+    create(:user).tap do |u|
+      project.add_maintainer(u)
+    end
+  end
+
+  let(:software_license_policy) do
+    create(
+      :software_license_policy,
+      software_license: create(:software_license, name: 'ExamplePL/2.1'),
+      approval_status: 'blacklisted'
+    )
+  end
+
+  before do
+    stub_licensed_features(license_management: true)
+  end
+
+  describe '#execute' do
+    def update_software_license_policy(opts)
+      described_class.new(project, user, opts).execute(software_license_policy)
+    end
+
+    context 'approval status update' do
+      let(:opts) do
+        { approval_status: 'approved' }
+      end
+
+      context 'with license management unavailable' do
+        before do
+          stub_licensed_features(license_management: false)
+        end
+
+        it 'does not update the software license policy' do
+          update_software_license_policy(opts)
+
+          expect(software_license_policy).to be_valid
+          expect(software_license_policy.approval_status).not_to eq(opts[:approval_status])
+        end
+      end
+
+      context 'with a user allowed to admin' do
+        it 'updates the software license policy correctly' do
+          update_software_license_policy(opts)
+
+          expect(software_license_policy).to be_valid
+          expect(software_license_policy.approval_status).to eq(opts[:approval_status])
+        end
+      end
+
+      context 'with a user not allowed to admin' do
+        let(:user) { create(:user) }
+
+        it 'does not updates the software license policy' do
+          update_software_license_policy(opts)
+
+          expect(software_license_policy).to be_valid
+          expect(software_license_policy.approval_status).not_to eq(opts[:approval_status])
+        end
+      end
+    end
+
+    context 'name update' do
+      let(:opts) do
+        { name: 'MyPL' }
+      end
+
+      it 'does not updates the software license policy' do
+        update_software_license_policy(opts)
+
+        expect(software_license_policy).to be_valid
+        expect(software_license_policy.name).not_to eq(opts[:name])
+      end
+    end
+  end
+end

lib/api/api.rb

@@ -116,6 +116,7 @@ module API
     mount ::API::Keys
     mount ::API::Labels
     mount ::API::Lint
+    mount ::API::ManagedLicenses
     mount ::API::Markdown
     mount ::API::Members
     mount ::API::MergeRequestApprovals

lib/api/entities.rb

@@ -1422,6 +1422,10 @@ module API
       expose :reset_approvals_on_push
       expose :disable_overriding_approvers_per_merge_request
     end
+
+    class ManagedLicense < Grape::Entity
+      expose :id, :name, :approval_status
+    end
   end
 end
 

spec/lib/gitlab/import_export/all_models.yml

@@ -334,6 +334,7 @@ project:
 - import_export_upload
 - vulnerability_feedback
 - prometheus_alerts
+- software_license_policies
 award_emoji:
 - awardable
 - user