Merge branch...

Merge branch '331102-incorrect-system-notes-and-email-notifications-when-unassigning-users-via-api' into 'master'

Resolve "Incorrect system notes and email notifications when unassigning users via API"

See merge request gitlab-org/gitlab!61897

app/services/merge_requests/handle_assignees_change_service.rb

@@ -8,7 +8,7 @@ module MergeRequests
           merge_request.id,
           current_user.id,
           old_assignees.map(&:id),
-          options
+          options.stringify_keys # see: https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/1090
         )
     end
 

app/services/merge_requests/update_assignees_service.rb

@@ -9,9 +9,11 @@ module MergeRequests
     def execute(merge_request)
       return merge_request unless current_user&.can?(:update_merge_request, merge_request)
 
-      old_assignees = merge_request.assignees
+      old_assignees = merge_request.assignees.to_a
       old_ids = old_assignees.map(&:id)
       new_ids = new_assignee_ids(merge_request)
+
+      return merge_request if merge_request.errors.any?
       return merge_request if new_ids.size != update_attrs[:assignee_ids].size
       return merge_request if old_ids.to_set == new_ids.to_set # no-change
 
@@ -30,8 +32,11 @@ module MergeRequests
 
     def new_assignee_ids(merge_request)
       # prime the cache - prevent N+1 lookup during authorization loop.
-      merge_request.project.team.max_member_access_for_user_ids(update_attrs[:assignee_ids])
-      User.id_in(update_attrs[:assignee_ids]).map do |user|
+      user_ids = update_attrs[:assignee_ids]
+      return [] if user_ids.empty?
+
+      merge_request.project.team.max_member_access_for_user_ids(user_ids)
+      User.id_in(user_ids).map do |user|
         if user.can?(:read_merge_request, merge_request)
           user.id
         else

app/services/merge_requests/update_service.rb

@@ -293,7 +293,7 @@ module MergeRequests
 
     def attempt_specialized_update_services(merge_request, attribute)
       case attribute
-      when :assignee_ids
+      when :assignee_ids, :assignee_id
         assignees_service.execute(merge_request)
       when :spend_time
         add_time_spent_service.execute(merge_request)

app/workers/all_queues.yml

@@ -2283,15 +2283,6 @@
   :weight: 1
   :idempotent: true
   :tags: []
-- :name: merge_requests_assignees_change
-  :worker_name: MergeRequests::AssigneesChangeWorker
-  :feature_category: :source_code_management
-  :has_external_dependencies:
-  :urgency: :high
-  :resource_boundary: :unknown
-  :weight: 1
-  :idempotent: true
-  :tags: []
 - :name: merge_requests_delete_source_branch
   :worker_name: MergeRequests::DeleteSourceBranchWorker
   :feature_category: :source_code_management

app/workers/merge_requests/assignees_change_worker.rb

-# frozen_string_literal: true
-
-class MergeRequests::AssigneesChangeWorker
-  include ApplicationWorker
-
-  sidekiq_options retry: 3
-
-  feature_category :source_code_management
-  urgency :high
-  deduplicate :until_executed
-  idempotent!
-
-  def perform(merge_request_id, user_id, old_assignee_ids)
-    merge_request = MergeRequest.find(merge_request_id)
-    current_user = User.find(user_id)
-
-    # if a user was added and then removed, or removed and then added
-    # while waiting for this job to run, assume that nothing happened.
-    users = User.id_in(old_assignee_ids - merge_request.assignee_ids)
-
-    return if users.blank?
-
-    ::MergeRequests::HandleAssigneesChangeService
-      .new(project: merge_request.target_project, current_user: current_user)
-      .execute(merge_request, users, execute_hooks: true)
-  rescue ActiveRecord::RecordNotFound
-  end
-end

changelogs/unreleased/331102-incorrect-system-notes-and-email-notifications-when-unassigning-us.yml

+---
+title: Ensure post-update actions are applied when assignees change
+merge_request: 61897
+author:
+type: fixed

config/sidekiq_queues.yml

@@ -218,8 +218,6 @@
   - 1
 - - merge_request_reset_approvals
   - 1
-- - merge_requests_assignees_change
-  - 1
 - - merge_requests_delete_source_branch
   - 1
 - - merge_requests_handle_assignees_change

lib/api/merge_requests.rb

@@ -436,14 +436,11 @@ module API
         mr_params = declared_params(include_missing: false)
         mr_params[:force_remove_source_branch] = mr_params.delete(:remove_source_branch) if mr_params.has_key?(:remove_source_branch)
         mr_params = convert_parameters_from_legacy_format(mr_params)
+        mr_params[:use_specialized_service] = true
 
-        service = if mr_params.one? && (mr_params.keys & %i[assignee_id assignee_ids]).one?
-                    ::MergeRequests::UpdateAssigneesService
-                  else
-                    ::MergeRequests::UpdateService
-                  end
-
-        merge_request = service.new(project: user_project, current_user: current_user, params: mr_params).execute(merge_request)
+        merge_request = ::MergeRequests::UpdateService
+          .new(project: user_project, current_user: current_user, params: mr_params)
+          .execute(merge_request)
 
         handle_merge_request_errors!(merge_request)
 

spec/requests/api/merge_requests_spec.rb

@@ -2174,6 +2174,12 @@ RSpec.describe API::MergeRequests do
           a_hash_including('name' => user2.name)
         )
       end
+
+      it 'creates appropriate system notes', :sidekiq_inline do
+        put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", user), params: params
+
+        expect(merge_request.notes.system.last.note).to include("assigned to #{user2.to_reference}")
+      end
     end
 
     context 'when assignee_id=user2.id' do
@@ -2193,6 +2199,27 @@ RSpec.describe API::MergeRequests do
       end
     end
 
+    context 'when assignee_id=0' do
+      let(:params) do
+        {
+          assignee_id: 0
+        }
+      end
+
+      it 'clears the assignees' do
+        put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", user), params: params
+
+        expect(response).to have_gitlab_http_status(:ok)
+        expect(json_response['assignees']).to be_empty
+      end
+
+      it 'creates appropriate system notes', :sidekiq_inline do
+        put api("/projects/#{project.id}/merge_requests/#{merge_request.iid}", user), params: params
+
+        expect(merge_request.notes.system.last.note).to include("unassigned #{user.to_reference}")
+      end
+    end
+
     context 'when only assignee_ids are provided, and the list is empty' do
       let(:params) do
         {

spec/services/merge_requests/handle_assignees_change_service_spec.rb

@@ -6,7 +6,7 @@ RSpec.describe MergeRequests::HandleAssigneesChangeService do
   let_it_be(:project) { create(:project, :repository) }
   let_it_be(:user) { create(:user) }
   let_it_be(:assignee) { create(:user) }
-  let_it_be(:merge_request) { create(:merge_request, author: user, source_project: project, assignees: [assignee]) }
+  let_it_be_with_reload(:merge_request) { create(:merge_request, author: user, source_project: project, assignees: [assignee]) }
   let_it_be(:old_assignees) { create_list(:user, 3) }
 
   let(:options) { {} }
@@ -45,13 +45,27 @@ RSpec.describe MergeRequests::HandleAssigneesChangeService do
       service.execute(merge_request, old_assignees, options)
     end
 
+    let(:note) { merge_request.notes.system.last }
+    let(:removed_note) { "unassigned #{old_assignees.map(&:to_reference).to_sentence}" }
+
+    context 'when unassigning all users' do
+      before do
+        merge_request.update!(assignee_ids: [])
+      end
+
       it 'creates assignee note' do
         execute
 
-      note = merge_request.notes.last
+        expect(note).not_to be_nil
+        expect(note.note).to eq removed_note
+      end
+    end
+
+    it 'creates assignee note' do
+      execute
 
       expect(note).not_to be_nil
-      expect(note.note).to include "assigned to #{assignee.to_reference} and unassigned #{old_assignees.map(&:to_reference).to_sentence}"
+      expect(note.note).to include "assigned to #{assignee.to_reference} and #{removed_note}"
     end
 
     it 'sends email notifications to old and new assignees', :mailer, :sidekiq_inline do

spec/services/merge_requests/update_assignees_service_spec.rb

@@ -17,6 +17,7 @@ RSpec.describe MergeRequests::UpdateAssigneesService do
            description: "FYI #{user2.to_reference}",
            assignee_ids: [user3.id],
            source_project: project,
+           target_project: project,
            author: create(:user))
   end
 
@@ -24,6 +25,7 @@ RSpec.describe MergeRequests::UpdateAssigneesService do
     project.add_maintainer(user)
     project.add_developer(user2)
     project.add_developer(user3)
+    merge_request.errors.clear
   end
 
   let(:service) { described_class.new(project: project, current_user: user, params: opts) }
@@ -32,35 +34,53 @@ RSpec.describe MergeRequests::UpdateAssigneesService do
   describe 'execute' do
     def update_merge_request
       service.execute(merge_request)
-      merge_request.reload
+    end
+
+    shared_examples 'removing all assignees' do
+      it 'removes all assignees' do
+        expect(update_merge_request).to have_attributes(assignees: be_empty, errors: be_none)
+      end
+
+      it 'enqueues the correct background work' do
+        expect_next(MergeRequests::HandleAssigneesChangeService, project: project, current_user: user) do |service|
+          expect(service)
+            .to receive(:async_execute)
+            .with(merge_request, [user3], execute_hooks: true)
+        end
+
+        update_merge_request
+      end
     end
 
     context 'when the parameters are valid' do
       context 'when using sentinel values' do
+        context 'when using assignee_ids' do
           let(:opts) { { assignee_ids: [0] } }
 
-        it 'removes all assignees' do
-          expect { update_merge_request }.to change(merge_request, :assignees).to([])
+          it_behaves_like 'removing all assignees'
+        end
+
+        context 'when using assignee_id' do
+          let(:opts) { { assignee_id: 0 } }
+
+          it_behaves_like 'removing all assignees'
         end
       end
 
-      context 'the assignee_ids parameter is the empty list' do
+      context 'when the assignee_ids parameter is the empty list' do
         let(:opts) { { assignee_ids: [] } }
 
-        it 'removes all assignees' do
-          expect { update_merge_request }.to change(merge_request, :assignees).to([])
-        end
+        it_behaves_like 'removing all assignees'
       end
 
       it 'updates the MR, and queues the more expensive work for later' do
         expect_next(MergeRequests::HandleAssigneesChangeService, project: project, current_user: user) do |service|
           expect(service)
-            .to receive(:async_execute)
-            .with(merge_request, [user3], execute_hooks: true)
+            .to receive(:async_execute).with(merge_request, [user3], execute_hooks: true)
         end
 
         expect { update_merge_request }
-          .to change(merge_request, :assignees).to([user2])
+          .to change { merge_request.reload.assignees }.from([user3]).to([user2])
           .and change(merge_request, :updated_at)
           .and change(merge_request, :updated_by).to(user)
       end
@@ -68,7 +88,10 @@ RSpec.describe MergeRequests::UpdateAssigneesService do
       it 'does not update the assignees if they do not have access' do
         opts[:assignee_ids] = [create(:user).id]
 
-        expect { update_merge_request }.not_to change(merge_request, :assignee_ids)
+        expect(update_merge_request).to have_attributes(
+          assignees: [user3],
+          errors: be_any
+        )
       end
 
       it 'is more efficient than using the full update-service' do

spec/workers/merge_requests/assignees_change_worker_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe MergeRequests::AssigneesChangeWorker do
-  include AfterNextHelpers
-
-  let_it_be(:merge_request) { create(:merge_request) }
-  let_it_be(:user) { create(:user) }
-  let_it_be(:old_assignees) { create_list(:user, 3) }
-
-  let(:user_ids) { old_assignees.map(&:id).to_a }
-  let(:worker) { described_class.new }
-
-  it_behaves_like 'an idempotent worker' do
-    let(:job_args) { [merge_request.id, user.id, user_ids] }
-  end
-
-  describe '#perform' do
-    context 'with a non-existing merge request' do
-      it 'does nothing' do
-        expect(::MergeRequests::HandleAssigneesChangeService).not_to receive(:new)
-
-        worker.perform(non_existing_record_id, user.id, user_ids)
-      end
-    end
-
-    context 'with a non-existing user' do
-      it 'does nothing' do
-        expect(::MergeRequests::HandleAssigneesChangeService).not_to receive(:new)
-
-        worker.perform(merge_request.id, non_existing_record_id, user_ids)
-      end
-    end
-
-    context 'when there are no changes' do
-      it 'does nothing' do
-        expect(::MergeRequests::HandleAssigneesChangeService).not_to receive(:new)
-
-        worker.perform(merge_request.id, user.id, merge_request.assignee_ids)
-      end
-    end
-
-    context 'when the old users cannot be found' do
-      it 'does nothing' do
-        expect(::MergeRequests::HandleAssigneesChangeService).not_to receive(:new)
-
-        worker.perform(merge_request.id, user.id, [non_existing_record_id])
-      end
-    end
-
-    it 'gets MergeRequests::UpdateAssigneesService to handle the changes' do
-      expect_next(::MergeRequests::HandleAssigneesChangeService)
-        .to receive(:execute).with(merge_request, match_array(old_assignees), execute_hooks: true)
-
-      worker.perform(merge_request.id, user.id, user_ids)
-    end
-  end
-end