Add `link_type` to `ReleaseLink` GraphQL type

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

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/33386

app/graphql/types/release_link_type.rb

@@ -12,7 +12,8 @@ module Types
           description: 'Name of the link'
     field :url, GraphQL::STRING_TYPE, null: true,
           description: 'URL of the link'
-
+    field :link_type, Types::ReleaseLinkTypeEnum, null: true,
+          description: 'Type of the link: `other`, `runbook`, `image`, `package`; defaults to `other`'
     field :external, GraphQL::BOOLEAN_TYPE, null: true, method: :external?,
           description: 'Indicates the link points to an external resource'
   end

app/graphql/types/release_link_type_enum.rb

+# frozen_string_literal: true
+
+module Types
+  class ReleaseLinkTypeEnum < BaseEnum
+    graphql_name 'ReleaseLinkType'
+    description 'Type of the link: `other`, `runbook`, `image`, `package`; defaults to `other`'
+
+    ::Releases::Link.link_types.keys.each do |link_type|
+      value link_type.upcase, value: link_type, description: "#{link_type.titleize} link type"
+    end
+  end
+end

changelogs/unreleased/207257-specify-asset-types-in-releases-3.yml

+---
+title: Add `link_type` to `ReleaseLink` GraphQL type
+merge_request: 33386
+author:
+type: added

doc/api/graphql/reference/gitlab_schema.graphql

@@ -9648,6 +9648,11 @@ type ReleaseLink {
   """
   id: ID!
 
+  """
+  Type of the link: `other`, `runbook`, `image`, `package`; defaults to `other`
+  """
+  linkType: ReleaseLinkType
+
   """
   Name of the link
   """
@@ -9694,6 +9699,31 @@ type ReleaseLinkEdge {
   node: ReleaseLink
 }
 
+"""
+Type of the link: `other`, `runbook`, `image`, `package`; defaults to `other`
+"""
+enum ReleaseLinkType {
+  """
+  Image link type
+  """
+  IMAGE
+
+  """
+  Other link type
+  """
+  OTHER
+
+  """
+  Package link type
+  """
+  PACKAGE
+
+  """
+  Runbook link type
+  """
+  RUNBOOK
+}
+
 type ReleaseSource {
   """
   Format of the source

doc/api/graphql/reference/gitlab_schema.json

@@ -28194,6 +28194,20 @@
               "isDeprecated": false,
               "deprecationReason": null
             },
+            {
+              "name": "linkType",
+              "description": "Type of the link: `other`, `runbook`, `image`, `package`; defaults to `other`",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "ENUM",
+                "name": "ReleaseLinkType",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
             {
               "name": "name",
               "description": "Name of the link",
@@ -28342,6 +28356,41 @@
           "enumValues": null,
           "possibleTypes": null
         },
+        {
+          "kind": "ENUM",
+          "name": "ReleaseLinkType",
+          "description": "Type of the link: `other`, `runbook`, `image`, `package`; defaults to `other`",
+          "fields": null,
+          "inputFields": null,
+          "interfaces": null,
+          "enumValues": [
+            {
+              "name": "OTHER",
+              "description": "Other link type",
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "RUNBOOK",
+              "description": "Runbook link type",
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "PACKAGE",
+              "description": "Package link type",
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "IMAGE",
+              "description": "Image link type",
+              "isDeprecated": false,
+              "deprecationReason": null
+            }
+          ],
+          "possibleTypes": null
+        },
         {
           "kind": "OBJECT",
           "name": "ReleaseSource",

doc/api/graphql/reference/index.md

@@ -1342,6 +1342,7 @@ Information about pagination in a connection.
 | ---   |  ---- | ----------  |
 | `external` | Boolean | Indicates the link points to an external resource |
 | `id` | ID! | ID of the link |
+| `linkType` | ReleaseLinkType | Type of the link: `other`, `runbook`, `image`, `package`; defaults to `other` |
 | `name` | String | Name of the link |
 | `url` | String | URL of the link |
 

spec/graphql/types/release_links_type_spec.rb

@@ -7,7 +7,7 @@ describe GitlabSchema.types['ReleaseLink'] do
 
   it 'has the expected fields' do
     expected_fields = %w[
-      id name url external
+      id name url external link_type
     ]
 
     expect(described_class).to include_graphql_fields(*expected_fields)