Add `link_type` column to `release_assets` table

Part of https://gitlab.com/gitlab-org/gitlab/-/issues/207257

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/33156

app/models/releases/link.rb

@@ -14,6 +14,13 @@ module Releases
 
     scope :sorted, -> { order(created_at: :desc) }
 
+    enum link_type: {
+      other: 0,
+      runbook: 1,
+      package: 2,
+      image: 3
+    }
+
     def internal?
       url.start_with?(release.project.web_url)
     end

changelogs/unreleased/207257-specify-asset-types-in-releases.yml

+---
+title: Add link_type column to release_links table
+merge_request: 33156
+author:
+type: changed

db/migrate/20200527092027_add_link_type_to_release_links.rb

+# frozen_string_literal: true
+
+class AddLinkTypeToReleaseLinks < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      add_column :release_links, :link_type, :integer, limit: 2, default: 0
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_column :release_links, :link_type
+    end
+  end
+end

db/structure.sql

@@ -5730,7 +5730,8 @@ CREATE TABLE public.release_links (
     name character varying NOT NULL,
     created_at timestamp with time zone NOT NULL,
     updated_at timestamp with time zone NOT NULL,
-    filepath character varying(128)
+    filepath character varying(128),
+    link_type smallint DEFAULT 0
 );
 
 CREATE SEQUENCE public.release_links_id_seq
@@ -14031,6 +14032,7 @@ COPY "schema_migrations" (version) FROM STDIN;
 20200526153844
 20200526164946
 20200526164947
+20200527092027
 20200527094322
 20200527095401
 20200527151413

spec/lib/gitlab/import_export/safe_model_attributes.yml

@@ -144,6 +144,7 @@ Releases::Link:
 - url
 - name
 - filepath
+- link_type
 - created_at
 - updated_at
 ProjectMember: