SF-3611 Improve speed of adding a source, drafting or training project (#3512)

Author: pmachapman

src/SIL.XForge.Scripture/Services/ISFProjectService.cs

@@ -59,6 +59,8 @@ Task<QueryResults<EventMetric>> GetEventMetricsAsync(
     Task<IReadOnlyList<InviteeStatus>> InvitedUsersAsync(string curUserId, string projectId);
     bool IsSourceProject(string projectId);
     Task<IEnumerable<TransceleratorQuestion>> TransceleratorQuestionsAsync(string curUserId, string projectId);
+
+    [Mutex]
     Task SyncUserRoleAsync(string curUserId, string projectId);
     Task UpdatePermissionsAsync(
         string curUserId,

src/SIL.XForge.Scripture/Services/SFProjectService.cs

@@ -2078,8 +2078,7 @@ private async Task<TranslateSource> GetTranslateSourceAsync(
         else if (updatePermissions)
         {
             // Update all the permissions for all the users on this project or resource
-            IDocument<SFProject> projectDoc = await GetProjectDocAsync(sourceProjectRef, conn);
-            await UpdatePermissionsAsync(curUserId, projectDoc);
+            _backgroundJobClient.Enqueue<ISFProjectService>(r => r.SyncUserRoleAsync(curUserId, sourceProjectRef));
         }
 
         return new TranslateSource

test/SIL.XForge.Scripture.Tests/Services/SFProjectServiceTests.cs

@@ -2788,8 +2788,9 @@ await env.Service.UpdateSettingsAsync(
 
         SFProject project = env.GetProject(Project01);
         Assert.That(project.TranslateConfig.Source.ProjectRef, Is.EqualTo(Resource01));
+        env.BackgroundJobClient.Received(1).Create(Arg.Any<Job>(), Arg.Any<IState>());
         await env
-            .ParatextService.Received(2)
+            .ParatextService.Received(1)
             .GetPermissionsAsync(
                 Arg.Any<UserSecret>(),
                 Arg.Is<SFProject>(p => p.ParatextId == Resource01PTId),