Revision for EventTimingChangeWorker/EventTimingChangeNotifier

src/EventHub.BackgroundServices/Events/EventReminderNotifier.cs

@@ -21,10 +21,10 @@ namespace EventHub.Events
         private readonly IAsyncQueryableExecuter _asyncExecuter;
 
         public EventReminderNotifier(
-            IEmailSender emailSender, 
-            ITemplateRenderer templateRenderer, 
-            IRepository<AppUser, Guid> userRepository, 
-            IRepository<EventRegistration, Guid> eventRegistrationRepository, 
+            IEmailSender emailSender,
+            ITemplateRenderer templateRenderer,
+            IRepository<AppUser, Guid> userRepository,
+            IRepository<EventRegistration, Guid> eventRegistrationRepository,
             IAsyncQueryableExecuter asyncExecuter)
         {
             _emailSender = emailSender;
@@ -33,12 +33,17 @@ namespace EventHub.Events
             _eventRegistrationRepository = eventRegistrationRepository;
             _asyncExecuter = asyncExecuter;
         }
-        
+
         public async Task NotifyAsync(Event @event)
         {
+            if (@event is null)
+            {
+                return;
+            }
+
             var userQueryable = await _userRepository.GetQueryableAsync();
             var registrationQueryable = await _eventRegistrationRepository.GetQueryableAsync();
-            
+
             var userQuery = from eventRegistration in registrationQueryable
                 join user in userQueryable on eventRegistration.UserId equals user.Id
                 where eventRegistration.EventId == @event.Id
@@ -61,7 +66,7 @@ namespace EventHub.Events
                     user.Email,
                     "The event has last thirty minutes to start!",
                     await _templateRenderer.RenderAsync(EmailTemplates.EventReminder, templateModel)
-                );   
+                );
             }
         }
     }

src/EventHub.BackgroundServices/Events/EventReminderWorker.cs

@@ -45,7 +45,7 @@ namespace EventHub.Events
                     {
                         await eventReminderNotifier.NotifyAsync(@event);
                     }
-                    
+
                     @event.IsRemindingEmailSent = true;
                     await eventRepository.UpdateAsync(@event);
                 }

src/EventHub.BackgroundServices/Events/EventTimingChangeNotifier.cs

@@ -16,22 +16,22 @@ namespace EventHub.Events
     {
         private readonly IEmailSender _emailSender;
         private readonly ITemplateRenderer _templateRenderer;
-        private readonly IRepository<EventRegistration, Guid> _eventRegistrationRepository;
         private readonly IAsyncQueryableExecuter _asyncExecuter;
         private readonly IRepository<AppUser, Guid> _userRepository;
+        private readonly IRepository<EventRegistration, Guid> _eventRegistrationRepository;
 
         public EventTimingChangeNotifier(
             IEmailSender emailSender,
             ITemplateRenderer templateRenderer,
-            IRepository<EventRegistration, Guid> eventRegistrationRepository,
             IAsyncQueryableExecuter asyncExecuter,
-            IRepository<AppUser, Guid> userRepository)
+            IRepository<AppUser, Guid> userRepository,
+            IRepository<EventRegistration, Guid> eventRegistrationRepository)
         {
             _emailSender = emailSender;
             _templateRenderer = templateRenderer;
-            _eventRegistrationRepository = eventRegistrationRepository;
             _asyncExecuter = asyncExecuter;
             _userRepository = userRepository;
+            _eventRegistrationRepository = eventRegistrationRepository;
         }
 
         public async Task NotifyAsync(Event @event)
@@ -40,22 +40,19 @@ namespace EventHub.Events
             {
                 return;
             }
-            
-            //TODO: It will be more performant if we join to users instead of individually query (already done for EventReminderNotifier)
 
-            var queryable = await _eventRegistrationRepository.GetQueryableAsync();
-            var registrations = await _asyncExecuter.ToListAsync(
-                queryable.Where(x => x.EventId == @event.Id && !x.IsTimingChangeEmailSent)
-            );
+            var userQueryable = await _userRepository.GetQueryableAsync();
+            var registrationQueryable = await _eventRegistrationRepository.GetQueryableAsync();
 
-            foreach (var registration in registrations)
-            {
-                var user = await _userRepository.FindAsync(registration.UserId);
-                if (user is null)
-                {
-                    continue;
-                }
+            var userQuery = from eventRegistration in registrationQueryable
+                join user in userQueryable on eventRegistration.UserId equals user.Id
+                where eventRegistration.EventId == @event.Id
+                select user;
+
+            var users = await _asyncExecuter.ToListAsync(userQuery);
 
+            foreach (var user in users)
+            {
                 var templateModel = new
                 {
                     UserName = user.GetFullNameOrUsername(),
@@ -70,11 +67,7 @@ namespace EventHub.Events
                     "Event time has been changed!",
                     await _templateRenderer.RenderAsync(EmailTemplates.EventTimingChanged, templateModel)
                 );
-
-                registration.IsTimingChangeEmailSent = true;
             }
-
-            await _eventRegistrationRepository.UpdateManyAsync(registrations, autoSave: true);
         }
     }
 }

src/EventHub.BackgroundServices/Events/EventTimingChangeWorker.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Linq;
 using System.Threading.Tasks;
-using EventHub.Events.Registrations;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Volo.Abp.BackgroundWorkers;
@@ -17,7 +16,7 @@ namespace EventHub.Events
         public EventTimingChangeWorker(
             AbpAsyncTimer timer,
             IServiceScopeFactory serviceScopeFactory
-            ) : base(
+        ) : base(
             timer,
             serviceScopeFactory)
         {
@@ -29,27 +28,26 @@ namespace EventHub.Events
         {
             var eventTimingChangeNotifier = workerContext.ServiceProvider.GetRequiredService<EventTimingChangeNotifier>();
             var eventRepository = workerContext.ServiceProvider.GetRequiredService<IRepository<Event, Guid>>();
-            var eventRegistrationRepository = workerContext.ServiceProvider.GetRequiredService<IRepository<EventRegistration, Guid>>();
             var asyncExecuter = workerContext.ServiceProvider.GetRequiredService<IAsyncQueryableExecuter>();
 
-            var queryable = await eventRegistrationRepository.GetQueryableAsync();
-            var query = queryable
-                .Where(x => !x.IsTimingChangeEmailSent)
-                .Select(x => x.EventId)
-                .Distinct();
-            
-            var eventRegistrations = await asyncExecuter.ToListAsync(query);
-           
-            foreach (var eventRegistration in eventRegistrations)
+            var queryable = await eventRepository.GetQueryableAsync();
+            var query = queryable.Where(x => !x.IsTimingChangeEmailSent);
+
+            var events = await asyncExecuter.ToListAsync(query);
+
+            foreach (var @event in events)
             {
                 try
                 {
-                    await eventTimingChangeNotifier.NotifyAsync(await eventRepository.FindAsync(eventRegistration));
+                    await eventTimingChangeNotifier.NotifyAsync(@event);
+
+                    @event.IsTimingChangeEmailSent = true;
+                    await eventRepository.UpdateAsync(@event);
                 }
                 catch (Exception e)
                 {
                     Logger.LogError($"An error occurred while sending an email to the attendees of the event after the event time has changed. Error message: {e.Message}");
-                }    
+                }
             }
         }
     }

src/EventHub.BackgroundServices/Events/NewEventNotifier.cs

@@ -36,21 +36,23 @@ namespace EventHub.Events
 
         public async Task NotifyAsync(Event @event)
         {
-            //TODO: It will be more performant if we join to users instead of individually query (already done for EventReminderNotifier)
+            if (@event is null)
+            {
+                return;
+            }
+
+            var userQueryable = await _userRepository.GetQueryableAsync();
+            var organizationMembershipQueryable = await _organizationMembershipsRepository.GetQueryableAsync();
             
-            var queryable = await _organizationMembershipsRepository.GetQueryableAsync();
-            var organizationMembers = await _asyncExecuter.ToListAsync(
-                queryable.Where(x => x.OrganizationId == @event.OrganizationId)
-            );
+            var userQuery = from organizationMembership in organizationMembershipQueryable
+                join user in userQueryable on organizationMembership.UserId equals user.Id
+                where organizationMembership.OrganizationId == @event.OrganizationId
+                select user;
 
-            foreach (var member in organizationMembers)
-            {
-                var user = await _userRepository.FindAsync(member.UserId);
-                if (user is null)
-                {
-                    continue;
-                }
+            var users = await _asyncExecuter.ToListAsync(userQuery);
 
+            foreach (var user in users)
+            {
                 var templateModel = new
                 {
                     UserName = user.GetFullNameOrUsername(),

src/EventHub.BackgroundServices/Events/NewEventWorker.cs

@@ -16,7 +16,7 @@ namespace EventHub.Events
     {
         public NewEventWorker(
             AbpAsyncTimer timer,
-            IServiceScopeFactory serviceScopeFactory) 
+            IServiceScopeFactory serviceScopeFactory)
             : base(
                 timer,
                 serviceScopeFactory)
@@ -46,7 +46,7 @@ namespace EventHub.Events
                     {
                         await newEventNotifier.NotifyAsync(@event);
                     }
-                    
+
                     @event.IsEmailSentToMembers = true;
                     await eventRepository.UpdateAsync(@event);
                 }

src/EventHub.Domain/Events/Event.cs

@@ -40,6 +40,8 @@ namespace EventHub.Events
         
         public int TimingChangeCount  { get; set; }
         
+        public bool IsTimingChangeEmailSent { get; set; }
+
         private Event()
         {
 

src/EventHub.Domain/Events/EventTimeChangeLocalEventHandler.cs

@@ -1,48 +1,30 @@
 using System;
-using System.Linq;
 using System.Threading.Tasks;
-using EventHub.Events.Registrations;
-using IdentityServer4.Validation;
 using Volo.Abp.DependencyInjection;
 using Volo.Abp.Domain.Repositories;
 using Volo.Abp.EventBus;
-using Volo.Abp.Linq;
 
 namespace EventHub.Events
 {
     public class EventTimeChangeLocalEventHandler : ILocalEventHandler<EventTimeChangingEventData>, ITransientDependency
     {
-        private readonly IRepository<EventRegistration, Guid> _eventRegistrationRepository;
-        private readonly IAsyncQueryableExecuter _asyncExecuter;
+        private readonly IRepository<Event, Guid> _eventRepository;
 
-        public EventTimeChangeLocalEventHandler(
-            IRepository<EventRegistration, Guid> eventRegistrationRepository,
-            IAsyncQueryableExecuter asyncExecuter)
+        public EventTimeChangeLocalEventHandler(IRepository<Event, Guid> eventRepository)
         {
-            _eventRegistrationRepository = eventRegistrationRepository;
-            _asyncExecuter = asyncExecuter;
+            _eventRepository = eventRepository;
         }
         
         public async Task HandleEventAsync(EventTimeChangingEventData eventData)
         {
-            await UpdateEventRegistrationForTimingChangeAsync(@eventData.Event);
+            await UpdateEventForTimingChangeAsync(eventData.Event);
         }
         
-        private async Task UpdateEventRegistrationForTimingChangeAsync(Event @event)
+        private async Task UpdateEventForTimingChangeAsync(Event @event)
         {
-            var eventRegistrationQueryable = await _eventRegistrationRepository.GetQueryableAsync();
-            var query = eventRegistrationQueryable.Where(x => x.EventId == @event.Id);
-            var eventRegistrations = await _asyncExecuter.ToListAsync(query);
+            @event.IsTimingChangeEmailSent = false;
 
-            foreach (var eventRegistration in eventRegistrations)
-            {
-                if (eventRegistration.IsTimingChangeEmailSent)
-                {
-                    eventRegistration.IsTimingChangeEmailSent = false;
-                }
-            }
-
-            await _eventRegistrationRepository.UpdateManyAsync(eventRegistrations, true);
+            await _eventRepository.UpdateAsync(@event, true);
         }
     }
 }

src/EventHub.Domain/Events/Registrations/EventRegistration.cs

@@ -8,9 +8,7 @@ namespace EventHub.Events.Registrations
         public Guid EventId { get; private set; }
 
         public Guid UserId { get; private set; }
-
-        public bool IsTimingChangeEmailSent { get; set; }
-
+        
         private EventRegistration()
         {
 

src/EventHub.EntityFrameworkCore.DbMigrations/Migrations/20210614064205_Moved_IsTimingChangeEmailSent_To_Event.cs

@@ -0,0 +1,35 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace EventHub.Migrations
+{
+    public partial class Moved_IsTimingChangeEmailSent_To_Event : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "IsTimingChangeEmailSent",
+                table: "EhEventRegistrations");
+
+            migrationBuilder.AddColumn<bool>(
+                name: "IsTimingChangeEmailSent",
+                table: "EhEvents",
+                type: "boolean",
+                nullable: false,
+                defaultValue: true);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "IsTimingChangeEmailSent",
+                table: "EhEvents");
+
+            migrationBuilder.AddColumn<bool>(
+                name: "IsTimingChangeEmailSent",
+                table: "EhEventRegistrations",
+                type: "boolean",
+                nullable: false,
+                defaultValue: true);
+        }
+    }
+}

src/EventHub.EntityFrameworkCore.DbMigrations/Migrations/EventHubMigrationsDbContextModelSnapshot.cs

@@ -18,7 +18,7 @@ namespace EventHub.Migrations
             modelBuilder
                 .HasAnnotation("_Abp_DatabaseProvider", EfCoreDatabaseProvider.PostgreSql)
                 .HasAnnotation("Relational:MaxIdentifierLength", 63)
-                .HasAnnotation("ProductVersion", "5.0.5")
+                .HasAnnotation("ProductVersion", "5.0.7")
                 .HasAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn);
 
             modelBuilder.Entity("EventHub.Countries.Country", b =>
@@ -107,6 +107,11 @@ namespace EventHub.Migrations
                     b.Property<bool>("IsRemindingEmailSent")
                         .HasColumnType("boolean");
 
+                    b.Property<bool>("IsTimingChangeEmailSent")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("boolean")
+                        .HasDefaultValue(true);
+
                     b.Property<string>("Language")
                         .HasMaxLength(16)
                         .HasColumnType("character varying(16)");
@@ -191,12 +196,6 @@ namespace EventHub.Migrations
                         .HasColumnType("text")
                         .HasColumnName("ExtraProperties");
 
-                    b.Property<bool>("IsTimingChangeEmailSent")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("boolean")
-                        .HasDefaultValue(true)
-                        .HasColumnName("IsTimingChangeEmailSent");
-
                     b.Property<Guid>("UserId")
                         .HasColumnType("uuid");
 

src/EventHub.EntityFrameworkCore/EntityFrameworkCore/EventHubDbContextModelCreatingExtensions.cs

@@ -73,6 +73,8 @@ namespace EventHub.EntityFrameworkCore
                
                 b.HasOne<Country>().WithMany().HasForeignKey(x => x.CountryId).OnDelete(DeleteBehavior.NoAction);
 
+                b.Property(x => x.IsTimingChangeEmailSent).HasDefaultValue(true);
+
                 b.HasIndex(x => new {x.OrganizationId, x.StartTime});
                 b.HasIndex(x => x.StartTime);
                 b.HasIndex(x => x.UrlCode);
@@ -86,9 +88,6 @@ namespace EventHub.EntityFrameworkCore
 
                 b.ConfigureByConvention();
 
-                b.Property(x => x.IsTimingChangeEmailSent).HasDefaultValue(true)
-                    .HasColumnName(nameof(EventRegistration.IsTimingChangeEmailSent));
-
                 b.HasOne<Event>().WithMany().HasForeignKey(x => x.EventId).IsRequired().OnDelete(DeleteBehavior.NoAction);
 
                 if (isMigrationDbContext)