Added todo summary

test/DistEvents/DistDemoApp/DistDemoAppModule.cs

@@ -1,5 +1,6 @@
 using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.Autofac;
+using Volo.Abp.Domain.Entities.Events.Distributed;
 using Volo.Abp.EntityFrameworkCore;
 using Volo.Abp.EntityFrameworkCore.SqlServer;
 using Volo.Abp.Modularity;
@@ -23,6 +24,12 @@ namespace DistDemoApp
             {
                 options.UseSqlServer();
             });
+            
+            Configure<AbpDistributedEntityEventOptions>(options =>
+            {
+                options.EtoMappings.Add<TodoItem, TodoItemEto>();
+                options.AutoEventSelectors.Add<TodoItem>();
+            });
         }
     }
 }

test/DistEvents/DistDemoApp/Migrations/20210825112717_Added_Summary_Table.Designer.cs

@@ -0,0 +1,95 @@
+// <auto-generated />
+using System;
+using DistDemoApp;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Volo.Abp.EntityFrameworkCore;
+
+namespace DistDemoApp.Migrations
+{
+    [DbContext(typeof(TodoDbContext))]
+    [Migration("20210825112717_Added_Summary_Table")]
+    partial class Added_Summary_Table
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("_Abp_DatabaseProvider", EfCoreDatabaseProvider.SqlServer)
+                .HasAnnotation("Relational:MaxIdentifierLength", 128)
+                .HasAnnotation("ProductVersion", "5.0.9")
+                .HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
+
+            modelBuilder.Entity("DistDemoApp.TodoItem", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken()
+                        .HasMaxLength(40)
+                        .HasColumnType("nvarchar(40)")
+                        .HasColumnName("ConcurrencyStamp");
+
+                    b.Property<DateTime>("CreationTime")
+                        .HasColumnType("datetime2")
+                        .HasColumnName("CreationTime");
+
+                    b.Property<Guid?>("CreatorId")
+                        .HasColumnType("uniqueidentifier")
+                        .HasColumnName("CreatorId");
+
+                    b.Property<string>("ExtraProperties")
+                        .HasColumnType("nvarchar(max)")
+                        .HasColumnName("ExtraProperties");
+
+                    b.Property<string>("Text")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("nvarchar(128)");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("TodoItems");
+                });
+
+            modelBuilder.Entity("DistDemoApp.TodoSummary", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int")
+                        .HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken()
+                        .HasMaxLength(40)
+                        .HasColumnType("nvarchar(40)")
+                        .HasColumnName("ConcurrencyStamp");
+
+                    b.Property<byte>("Day")
+                        .HasColumnType("tinyint");
+
+                    b.Property<string>("ExtraProperties")
+                        .HasColumnType("nvarchar(max)")
+                        .HasColumnName("ExtraProperties");
+
+                    b.Property<byte>("Month")
+                        .HasColumnType("tinyint");
+
+                    b.Property<int>("TotalCount")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Year")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("TodoSummaries");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

test/DistEvents/DistDemoApp/Migrations/20210825112717_Added_Summary_Table.cs

@@ -0,0 +1,34 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace DistDemoApp.Migrations
+{
+    public partial class Added_Summary_Table : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "TodoSummaries",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    Year = table.Column<int>(type: "int", nullable: false),
+                    Month = table.Column<byte>(type: "tinyint", nullable: false),
+                    Day = table.Column<byte>(type: "tinyint", nullable: false),
+                    TotalCount = table.Column<int>(type: "int", nullable: false),
+                    ExtraProperties = table.Column<string>(type: "nvarchar(max)", nullable: true),
+                    ConcurrencyStamp = table.Column<string>(type: "nvarchar(40)", maxLength: 40, nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_TodoSummaries", x => x.Id);
+                });
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "TodoSummaries");
+        }
+    }
+}

test/DistEvents/DistDemoApp/Migrations/TodoDbContextModelSnapshot.cs

@@ -53,6 +53,40 @@ namespace DistDemoApp.Migrations
 
                     b.ToTable("TodoItems");
                 });
+
+            modelBuilder.Entity("DistDemoApp.TodoSummary", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int")
+                        .HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken()
+                        .HasMaxLength(40)
+                        .HasColumnType("nvarchar(40)")
+                        .HasColumnName("ConcurrencyStamp");
+
+                    b.Property<byte>("Day")
+                        .HasColumnType("tinyint");
+
+                    b.Property<string>("ExtraProperties")
+                        .HasColumnType("nvarchar(max)")
+                        .HasColumnName("ExtraProperties");
+
+                    b.Property<byte>("Month")
+                        .HasColumnType("tinyint");
+
+                    b.Property<int>("TotalCount")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Year")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("TodoSummaries");
+                });
 #pragma warning restore 612, 618
         }
     }

test/DistEvents/DistDemoApp/Program.cs

@@ -19,8 +19,8 @@ namespace DistDemoApp
                 var demoService = application.ServiceProvider.GetRequiredService<DemoService>();
                 await demoService.CreateTodoItemAsync();
 
-                //Console.WriteLine("Press ENTER to exit");
-                //Console.ReadLine();
+                Console.WriteLine("Press ENTER to exit");
+                Console.ReadLine();
                 
                 application.Shutdown();
             }

test/DistEvents/DistDemoApp/TodoDbContext.cs

@@ -7,6 +7,7 @@ namespace DistDemoApp
     public class TodoDbContext : AbpDbContext<TodoDbContext>
     {
         public DbSet<TodoItem> TodoItems { get; set; }
+        public DbSet<TodoSummary> TodoSummaries { get; set; }
 
         public TodoDbContext(DbContextOptions<TodoDbContext> options)
             : base(options)

test/DistEvents/DistDemoApp/TodoEventHandler.cs

@@ -0,0 +1,63 @@
+using System;
+using System.Threading.Tasks;
+using Volo.Abp.DependencyInjection;
+using Volo.Abp.Domain.Entities.Events.Distributed;
+using Volo.Abp.Domain.Repositories;
+using Volo.Abp.EventBus.Distributed;
+using Volo.Abp.Uow;
+
+namespace DistDemoApp
+{
+    public class TodoEventHandler :
+        IDistributedEventHandler<EntityCreatedEto<TodoItemEto>>,
+        IDistributedEventHandler<EntityDeletedEto<TodoItemEto>>,
+        ITransientDependency
+    {
+        private readonly IRepository<TodoSummary, int> _todoSummaryRepository;
+
+        public TodoEventHandler(IRepository<TodoSummary, int> todoSummaryRepository)
+        {
+            _todoSummaryRepository = todoSummaryRepository;
+        }
+        
+        [UnitOfWork]
+        public virtual async Task HandleEventAsync(EntityCreatedEto<TodoItemEto> eventData)
+        {
+            var dateTime = eventData.Entity.CreationTime;
+            var todoSummary = await _todoSummaryRepository.FindAsync(
+                x => x.Year == dateTime.Year &&
+                     x.Month == dateTime.Month &&
+                     x.Day == dateTime.Day
+            );
+
+            if (todoSummary == null)
+            {
+                await _todoSummaryRepository.InsertAsync(new TodoSummary(dateTime));
+            }
+            else
+            {
+                todoSummary.Increase();
+                await _todoSummaryRepository.UpdateAsync(todoSummary);
+            }
+
+            Console.WriteLine("Increased total count: " + todoSummary);
+        }
+
+        public async Task HandleEventAsync(EntityDeletedEto<TodoItemEto> eventData)
+        {
+            var dateTime = eventData.Entity.CreationTime;
+            var todoSummary = await _todoSummaryRepository.FirstOrDefaultAsync(
+                x => x.Year == dateTime.Year &&
+                     x.Month == dateTime.Month &&
+                     x.Day == dateTime.Day
+            );
+
+            if (todoSummary != null)
+            {
+                todoSummary.Decrease();
+                await _todoSummaryRepository.UpdateAsync(todoSummary);
+                Console.WriteLine("Decreased total count: " + todoSummary);
+            }
+        }
+    }
+}

test/DistEvents/DistDemoApp/TodoItemEto.cs

@@ -0,0 +1,12 @@
+using System;
+using Volo.Abp.EventBus;
+
+namespace DistDemoApp
+{
+    [EventName("todo-item")]
+    public class TodoItemEto
+    {
+        public DateTime CreationTime { get; set; }
+        public string Text { get; set; }
+    }
+}

test/DistEvents/DistDemoApp/TodoItemObjectMapper.cs

@@ -0,0 +1,24 @@
+using Volo.Abp.DependencyInjection;
+using Volo.Abp.ObjectMapping;
+
+namespace DistDemoApp
+{
+    public class TodoItemObjectMapper : IObjectMapper<TodoItem, TodoItemEto>, ISingletonDependency
+    {
+        public TodoItemEto Map(TodoItem source)
+        {
+            return new TodoItemEto
+            {
+                Text = source.Text,
+                CreationTime = source.CreationTime
+            };
+        }
+
+        public TodoItemEto Map(TodoItem source, TodoItemEto destination)
+        {
+            destination.Text = source.Text;
+            destination.CreationTime = source.CreationTime;
+            return destination;
+        }
+    }
+}

test/DistEvents/DistDemoApp/TodoSummary.cs

@@ -0,0 +1,41 @@
+using System;
+using Volo.Abp.Domain.Entities;
+
+namespace DistDemoApp
+{
+    public class TodoSummary : AggregateRoot<int>
+    {
+        public int Year { get; private set; }
+        public byte Month { get; private set; }
+        public byte Day { get; private set; }
+        public int TotalCount { get; private set; }
+
+        private TodoSummary()
+        {
+            
+        }
+
+        public TodoSummary(DateTime dateTime, int initialCount = 1)
+        {
+            Year = dateTime.Year;
+            Month = (byte)dateTime.Month;
+            Day = (byte)dateTime.Day;
+            TotalCount = initialCount;
+        }
+
+        public void Increase(int amount = 1)
+        {
+            TotalCount += amount;
+        }
+        
+        public void Decrease(int amount = 1)
+        {
+            TotalCount -= amount;
+        }
+
+        public override string ToString()
+        {
+            return $"{base.ToString()}, {Year}-{Month:2}-{Day:2}: {TotalCount}";
+        }
+    }
+}