Add alert_management_alert to issues type

Use Lookahead

app/graphql/resolvers/concerns/issue_resolver_fields.rb

@@ -4,6 +4,8 @@ module IssueResolverFields
   extend ActiveSupport::Concern
 
   prepended do
+    include LooksAhead
+
     argument :iid, GraphQL::STRING_TYPE,
               required: false,
               description: 'IID of the issue. For example, "1"'
@@ -49,7 +51,7 @@ module IssueResolverFields
               required: false
   end
 
-  def resolve(**args)
+  def resolve_with_lookahead(**args)
     # The project could have been loaded in batch by `BatchLoader`.
     # At this point we need the `id` of the project to query for issues, so
     # make sure it's loaded and not `nil` before continuing.

app/graphql/resolvers/issue_status_counts_resolver.rb

@@ -7,7 +7,7 @@ module Resolvers
     type Types::IssueStatusCountsType, null: true
 
     def continue_issue_resolve(parent, finder, **args)
-      Gitlab::IssuablesCountForState.new(finder, parent)
+      apply_lookahead(Gitlab::IssuablesCountForState.new(finder, parent))
     end
   end
 end

app/graphql/resolvers/issues_resolver.rb

@@ -19,7 +19,7 @@ module Resolvers
                                  milestone_due_asc milestone_due_desc].freeze
 
     def continue_issue_resolve(parent, finder, **args)
-      issues = Gitlab::Graphql::Loaders::IssuableLoader.new(parent, finder).batching_find_all
+      issues = apply_lookahead(Gitlab::Graphql::Loaders::IssuableLoader.new(parent, finder).batching_find_all)
 
       if non_stable_cursor_sort?(args[:sort])
         # Certain complex sorts are not supported by the stable cursor pagination yet.
@@ -30,6 +30,14 @@ module Resolvers
       end
     end
 
+    private
+
+    def preloads
+      {
+        alert_management_alert: [:alert_management_alert]
+      }
+    end
+
     def non_stable_cursor_sort?(sort)
       NON_STABLE_CURSOR_SORTS.include?(sort)
     end

app/graphql/types/issue_type.rb

@@ -101,6 +101,11 @@ module Types
     field :type, Types::IssueTypeEnum, null: true,
           method: :issue_type,
           description: 'Type of the issue'
+
+    field :alert_management_alert,
+          Types::AlertManagement::AlertType,
+          null: true,
+          description: 'Alert associated to this issue'
   end
 end
 

app/graphql/types/project_type.rb

@@ -146,12 +146,14 @@ module Types
           Types::IssueType.connection_type,
           null: true,
           description: 'Issues of the project',
+          extras: [:lookahead],
           resolver: Resolvers::IssuesResolver
 
     field :issue_status_counts,
           Types::IssueStatusCountsType,
           null: true,
           description: 'Counts of issues by status for the project',
+          extras: [:lookahead],
           resolver: Resolvers::IssueStatusCountsResolver
 
     field :milestones, Types::MilestoneType.connection_type, null: true,

changelogs/unreleased/240874-expose-alert-via-issues-type.yml

+---
+title: Add alert to Issue type in GraphQL
+merge_request: 40214
+author:
+type: added

doc/api/graphql/reference/gitlab_schema.graphql

@@ -5152,6 +5152,11 @@ type EpicHealthStatus {
 Relationship between an epic and an issue
 """
 type EpicIssue implements Noteable {
+  """
+  Alert associated to this issue
+  """
+  alertManagementAlert: AlertManagementAlert
+
   """
   Assignees of the issue
   """
@@ -6871,6 +6876,11 @@ enum IssuableState {
 }
 
 type Issue implements Noteable {
+  """
+  Alert associated to this issue
+  """
+  alertManagementAlert: AlertManagementAlert
+
   """
   Assignees of the issue
   """

doc/api/graphql/reference/gitlab_schema.json

@@ -14374,6 +14374,20 @@
           "name": "EpicIssue",
           "description": "Relationship between an epic and an issue",
           "fields": [
+            {
+              "name": "alertManagementAlert",
+              "description": "Alert associated to this issue",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "OBJECT",
+                "name": "AlertManagementAlert",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
             {
               "name": "assignees",
               "description": "Assignees of the issue",
@@ -18951,6 +18965,20 @@
           "name": "Issue",
           "description": null,
           "fields": [
+            {
+              "name": "alertManagementAlert",
+              "description": "Alert associated to this issue",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "OBJECT",
+                "name": "AlertManagementAlert",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
             {
               "name": "assignees",
               "description": "Assignees of the issue",

doc/api/graphql/reference/index.md

@@ -866,6 +866,7 @@ Relationship between an epic and an issue
 
 | Name  | Type  | Description |
 | ---   |  ---- | ----------  |
+| `alertManagementAlert` | AlertManagementAlert | Alert associated to this issue |
 | `author` | User! | User that created the issue |
 | `blocked` | Boolean! | Indicates the issue is blocked |
 | `closedAt` | Time | Timestamp of when the issue was closed |
@@ -1038,6 +1039,7 @@ Represents a Group Membership
 
 | Name  | Type  | Description |
 | ---   |  ---- | ----------  |
+| `alertManagementAlert` | AlertManagementAlert | Alert associated to this issue |
 | `author` | User! | User that created the issue |
 | `blocked` | Boolean! | Indicates the issue is blocked |
 | `closedAt` | Time | Timestamp of when the issue was closed |

spec/factories/issues.rb

@@ -26,6 +26,12 @@ FactoryBot.define do
       closed_at { Time.now }
     end
 
+    trait :with_alert do
+      after(:create) do |issue|
+        create(:alert_management_alert, project: issue.project, issue: issue)
+      end
+    end
+
     after(:build) do |issue, evaluator|
       issue.state_id = Issue.available_states[evaluator.state]
     end

spec/graphql/types/issue_type_spec.rb

@@ -15,7 +15,7 @@ RSpec.describe GitlabSchema.types['Issue'] do
     fields = %i[id iid title description state reference author assignees participants labels milestone due_date
                 confidential discussion_locked upvotes downvotes user_notes_count web_path web_url relative_position
                 subscribed time_estimate total_time_spent closed_at created_at updated_at task_completion_status
-                designs design_collection]
+                designs design_collection alert_management_alert]
 
     fields.each do |field_name|
       expect(described_class).to have_graphql_field(field_name)

spec/requests/api/graphql/project/issues_spec.rb

@@ -10,7 +10,7 @@ RSpec.describe 'getting an issue list for a project' do
   let(:issues_data) { graphql_data['project']['issues']['edges'] }
   let!(:issues) do
     [create(:issue, project: project, discussion_locked: true),
-     create(:issue, project: project)]
+     create(:issue, :with_alert, project: project)]
   end
 
   let(:fields) do
@@ -256,6 +256,40 @@ RSpec.describe 'getting an issue list for a project' do
     end
   end
 
+  context 'fetching alert management alert' do
+    let(:fields) do
+      <<~QUERY
+      edges {
+        node {
+          id
+          alertManagementAlert {
+            title
+          }
+        }
+      }
+      QUERY
+    end
+
+    # Alerts need to reporter and above
+    before do
+      project.add_reporter(current_user)
+    end
+
+    it 'avoids N+1 queries' do
+      control = ActiveRecord::QueryRecorder.new { post_graphql(query, current_user: current_user) }
+
+      create(:alert_management_alert, :with_issue, project: project )
+
+      expect { post_graphql(query, current_user: current_user) }.not_to exceed_query_limit(control)
+    end
+
+    it 'returns the alert data' do
+      post_graphql(query, current_user: current_user)
+
+      issues_data
+    end
+  end
+
   def grab_iids(data = issues_data)
     data.map do |issue|
       issue.dig('node', 'iid').to_i