Added `filter` to `GetWaitingEventsAsync` method.

framework/src/Volo.Abp.EntityFrameworkCore/Volo/Abp/EntityFrameworkCore/DistributedEvents/DbContextEventInbox.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Linq.Expressions;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.EntityFrameworkCore;
@@ -36,14 +37,21 @@ public class DbContextEventInbox<TDbContext> : IDbContextEventInbox<TDbContext>
     }
 
     [UnitOfWork]
-    public virtual async Task<List<IncomingEventInfo>> GetWaitingEventsAsync(int maxCount, CancellationToken cancellationToken = default)
+    public virtual async Task<List<IncomingEventInfo>> GetWaitingEventsAsync(int maxCount, Expression<Func<IIncomingEventInfo, bool>>? filter = null, CancellationToken cancellationToken = default)
     {
         var dbContext = await DbContextProvider.GetDbContextAsync();
 
+        Expression<Func<IncomingEventRecord, bool>>? transformedFilter = null;
+        if (filter != null)
+        {
+            transformedFilter = InboxOutboxFilterExpressionTransformer.Transform<IIncomingEventInfo, IncomingEventRecord>(filter)!;
+        }
+
         var outgoingEventRecords = await dbContext
             .IncomingEvents
             .AsNoTracking()
             .Where(x => !x.Processed)
+            .WhereIf(transformedFilter != null, transformedFilter!)
             .OrderBy(x => x.CreationTime)
             .Take(maxCount)
             .ToListAsync(cancellationToken: cancellationToken);

framework/src/Volo.Abp.EntityFrameworkCore/Volo/Abp/EntityFrameworkCore/DistributedEvents/DbContextEventOutbox.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Linq.Expressions;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.EntityFrameworkCore;
@@ -28,13 +29,20 @@ public class DbContextEventOutbox<TDbContext> : IDbContextEventOutbox<TDbContext
     }
 
     [UnitOfWork]
-    public virtual async Task<List<OutgoingEventInfo>> GetWaitingEventsAsync(int maxCount, CancellationToken cancellationToken = default)
+    public virtual async Task<List<OutgoingEventInfo>> GetWaitingEventsAsync(int maxCount, Expression<Func<IOutgoingEventInfo, bool>>? filter = null, CancellationToken cancellationToken = default)
     {
         var dbContext = (IHasEventOutbox)await DbContextProvider.GetDbContextAsync();
 
+        Expression<Func<OutgoingEventRecord, bool>>? transformedFilter = null;
+        if (filter != null)
+        {
+            transformedFilter = InboxOutboxFilterExpressionTransformer.Transform<IOutgoingEventInfo, OutgoingEventRecord>(filter)!;
+        }
+
         var outgoingEventRecords = await dbContext
             .OutgoingEvents
             .AsNoTracking()
+            .WhereIf(transformedFilter != null, transformedFilter!)
             .OrderBy(x => x.CreationTime)
             .Take(maxCount)
             .ToListAsync(cancellationToken: cancellationToken);

framework/src/Volo.Abp.EntityFrameworkCore/Volo/Abp/EntityFrameworkCore/DistributedEvents/IncomingEventRecord.cs

@@ -8,6 +8,7 @@ namespace Volo.Abp.EntityFrameworkCore.DistributedEvents;
 
 public class IncomingEventRecord :
     BasicAggregateRoot<Guid>,
+    IIncomingEventInfo,
     IHasExtraProperties,
     IHasCreationTime
 {

framework/src/Volo.Abp.EntityFrameworkCore/Volo/Abp/EntityFrameworkCore/DistributedEvents/OutgoingEventRecord.cs

@@ -8,6 +8,7 @@ namespace Volo.Abp.EntityFrameworkCore.DistributedEvents;
 
 public class OutgoingEventRecord :
     BasicAggregateRoot<Guid>,
+    IOutgoingEventInfo,
     IHasExtraProperties,
     IHasCreationTime
 {

framework/src/Volo.Abp.EventBus.Abstractions/Volo/Abp/EventBus/Distributed/IEventInbox.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq.Expressions;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -9,7 +10,7 @@ public interface IEventInbox
 {
     Task EnqueueAsync(IncomingEventInfo incomingEvent);
 
-    Task<List<IncomingEventInfo>> GetWaitingEventsAsync(int maxCount, CancellationToken cancellationToken = default);
+    Task<List<IncomingEventInfo>> GetWaitingEventsAsync(int maxCount, Expression<Func<IIncomingEventInfo, bool>>? filter = null, CancellationToken cancellationToken = default);
 
     Task MarkAsProcessedAsync(Guid id);
 

framework/src/Volo.Abp.EventBus.Abstractions/Volo/Abp/EventBus/Distributed/IEventOutbox.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq.Expressions;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -9,7 +10,7 @@ public interface IEventOutbox
 {
     Task EnqueueAsync(OutgoingEventInfo outgoingEvent);
 
-    Task<List<OutgoingEventInfo>> GetWaitingEventsAsync(int maxCount, CancellationToken cancellationToken = default);
+    Task<List<OutgoingEventInfo>> GetWaitingEventsAsync(int maxCount, Expression<Func<IOutgoingEventInfo, bool>>? filter = null, CancellationToken cancellationToken = default);
 
     Task DeleteAsync(Guid id);
 

framework/src/Volo.Abp.EventBus.Abstractions/Volo/Abp/EventBus/Distributed/IIncomingEventInfo.cs

@@ -0,0 +1,17 @@
+using System;
+using Volo.Abp.Data;
+
+namespace Volo.Abp.EventBus.Distributed;
+
+public interface IIncomingEventInfo : IHasExtraProperties
+{
+    public Guid Id { get; }
+
+    public string MessageId { get; }
+
+    public string EventName { get; }
+
+    public byte[] EventData { get; }
+
+    public DateTime CreationTime { get; }
+}

framework/src/Volo.Abp.EventBus.Abstractions/Volo/Abp/EventBus/Distributed/IOutgoingEventInfo.cs

@@ -0,0 +1,15 @@
+using System;
+using Volo.Abp.Data;
+
+namespace Volo.Abp.EventBus.Distributed;
+
+public interface IOutgoingEventInfo : IHasExtraProperties
+{
+    public Guid Id { get; }
+
+    public string EventName { get; }
+
+    public byte[] EventData { get; }
+
+    public DateTime CreationTime { get; }
+}

framework/src/Volo.Abp.EventBus.Abstractions/Volo/Abp/EventBus/Distributed/InboxOutboxFilterExpressionTransformer.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Linq.Expressions;
+
+namespace Volo.Abp.EventBus.Distributed;
+
+public static class InboxOutboxFilterExpressionTransformer
+{
+    public static Expression<Func<TTarget, bool>> Transform<TOriginal, TTarget>(Expression<Func<TOriginal, bool>> originalExpression)
+    {
+        var originalParam = originalExpression.Parameters[0];
+        var newParam = Expression.Parameter(typeof(TTarget), originalParam.Name);
+        var body = ReplaceParameter(originalExpression.Body, originalParam, newParam);
+        return Expression.Lambda<Func<TTarget, bool>>(body, newParam);
+    }
+
+    private static Expression ReplaceParameter(Expression body, ParameterExpression oldParam, ParameterExpression newParam)
+    {
+        var visitor = new ParameterReplacer(oldParam, newParam);
+        return visitor.Visit(body);
+    }
+
+    private class ParameterReplacer : ExpressionVisitor
+    {
+        private readonly ParameterExpression _oldParam;
+        private readonly ParameterExpression _newParam;
+
+        public ParameterReplacer(ParameterExpression oldParam, ParameterExpression newParam)
+        {
+            _oldParam = oldParam;
+            _newParam = newParam;
+        }
+
+        protected override Expression VisitParameter(ParameterExpression node)
+        {
+            return node == _oldParam ? _newParam : base.VisitParameter(node);
+        }
+    }
+}

framework/src/Volo.Abp.EventBus.Abstractions/Volo/Abp/EventBus/Distributed/IncomingEventInfo.cs

@@ -4,7 +4,7 @@ using Volo.Abp.Data;
 
 namespace Volo.Abp.EventBus.Distributed;
 
-public class IncomingEventInfo : IHasExtraProperties
+public class IncomingEventInfo : IIncomingEventInfo
 {
     public static int MaxEventNameLength { get; set; } = 256;
 

framework/src/Volo.Abp.EventBus.Abstractions/Volo/Abp/EventBus/Distributed/OutgoingEventInfo.cs

@@ -4,7 +4,7 @@ using Volo.Abp.Data;
 
 namespace Volo.Abp.EventBus.Distributed;
 
-public class OutgoingEventInfo : IHasExtraProperties
+public class OutgoingEventInfo : IOutgoingEventInfo
 {
     public static int MaxEventNameLength { get; set; } = 256;
 

framework/src/Volo.Abp.EventBus/Volo/Abp/EventBus/Distributed/AbpEventBusBoxesOptions.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Linq.Expressions;
 
 namespace Volo.Abp.EventBus.Distributed;
 
@@ -14,11 +15,21 @@ public class AbpEventBusBoxesOptions
     /// </summary>
     public int InboxWaitingEventMaxCount { get; set; }
 
+    /// <summary>
+    /// Default: null, means all events
+    /// </summary>
+    public Expression<Func<IIncomingEventInfo, bool>>? InboxProcessorFilter { get; set; }
+
     /// <summary>
     /// Default: 1000
     /// </summary>
     public int OutboxWaitingEventMaxCount { get; set; }
 
+    /// <summary>
+    /// Default: null, means all events
+    /// </summary>
+    public Expression<Func<IOutgoingEventInfo, bool>>? OutboxProcessorFilter { get; set; }
+
     /// <summary>
     /// Period time of <see cref="InboxProcessor"/> and <see cref="OutboxSender"/>
     /// Default: 2 seconds
@@ -34,7 +45,7 @@ public class AbpEventBusBoxesOptions
     /// Default: 2 hours
     /// </summary>
     public TimeSpan WaitTimeToDeleteProcessedInboxEvents { get; set; }
-    
+
     /// <summary>
     /// Default: true
     /// </summary>
@@ -44,7 +55,9 @@ public class AbpEventBusBoxesOptions
     {
         CleanOldEventTimeIntervalSpan = TimeSpan.FromHours(6);
         InboxWaitingEventMaxCount = 1000;
+        InboxProcessorFilter = null;
         OutboxWaitingEventMaxCount = 1000;
+        OutboxProcessorFilter = null;
         PeriodTimeSpan = TimeSpan.FromSeconds(2);
         DistributedLockWaitDuration = TimeSpan.FromSeconds(15);
         WaitTimeToDeleteProcessedInboxEvents = TimeSpan.FromHours(2);

framework/src/Volo.Abp.EventBus/Volo/Abp/EventBus/Distributed/InboxProcessor.cs

@@ -92,7 +92,7 @@ public class InboxProcessor : IInboxProcessor, ITransientDependency
 
                 while (true)
                 {
-                    var waitingEvents = await Inbox.GetWaitingEventsAsync(EventBusBoxesOptions.InboxWaitingEventMaxCount, StoppingToken);
+                    var waitingEvents = await Inbox.GetWaitingEventsAsync(EventBusBoxesOptions.InboxWaitingEventMaxCount, EventBusBoxesOptions.InboxProcessorFilter, StoppingToken);
                     if (waitingEvents.Count <= 0)
                     {
                         break;

framework/src/Volo.Abp.EventBus/Volo/Abp/EventBus/Distributed/OutboxSender.cs

@@ -77,14 +77,14 @@ public class OutboxSender : IOutboxSender, ITransientDependency
             {
                 while (true)
                 {
-                    var waitingEvents = await Outbox.GetWaitingEventsAsync(EventBusBoxesOptions.OutboxWaitingEventMaxCount, StoppingToken);
+                    var waitingEvents = await Outbox.GetWaitingEventsAsync(EventBusBoxesOptions.OutboxWaitingEventMaxCount, EventBusBoxesOptions.OutboxProcessorFilter, StoppingToken);
                     if (waitingEvents.Count <= 0)
                     {
                         break;
                     }
 
                     Logger.LogInformation($"Found {waitingEvents.Count} events in the outbox.");
-                    
+
                     if (EventBusBoxesOptions.BatchPublishOutboxEvents)
                     {
                         await PublishOutgoingMessagesInBatchAsync(waitingEvents);
@@ -119,7 +119,7 @@ public class OutboxSender : IOutboxSender, ITransientDependency
                 );
 
             await Outbox.DeleteAsync(waitingEvent.Id);
-            
+
             Logger.LogInformation($"Sent the event to the message broker with id = {waitingEvent.Id:N}");
         }
     }
@@ -129,9 +129,9 @@ public class OutboxSender : IOutboxSender, ITransientDependency
         await DistributedEventBus
             .AsSupportsEventBoxes()
             .PublishManyFromOutboxAsync(waitingEvents, OutboxConfig);
-                    
+
         await Outbox.DeleteManyAsync(waitingEvents.Select(x => x.Id).ToArray());
-        
+
         Logger.LogInformation($"Sent {waitingEvents.Count} events to message broker");
     }
 }

framework/src/Volo.Abp.MongoDB/Volo/Abp/MongoDB/DistributedEvents/MongoDbContextEventInbox.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Linq.Expressions;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.Extensions.Options;
@@ -50,16 +51,24 @@ public class MongoDbContextEventInbox<TMongoDbContext> : IMongoDbContextEventInb
     }
 
     [UnitOfWork]
-    public virtual async Task<List<IncomingEventInfo>> GetWaitingEventsAsync(int maxCount, CancellationToken cancellationToken = default)
+    public virtual async Task<List<IncomingEventInfo>> GetWaitingEventsAsync(int maxCount, Expression<Func<IIncomingEventInfo, bool>>? filter = null, CancellationToken cancellationToken = default)
     {
         var dbContext = await DbContextProvider.GetDbContextAsync(cancellationToken);
 
+        Expression<Func<IncomingEventRecord, bool>>? transformedFilter = null;
+        if (filter != null)
+        {
+            transformedFilter = InboxOutboxFilterExpressionTransformer.Transform<IIncomingEventInfo, IncomingEventRecord>(filter)!;
+        }
+
         var outgoingEventRecords = await dbContext
             .IncomingEvents
             .AsQueryable()
             .Where(x => !x.Processed)
+            .WhereIf(transformedFilter != null, transformedFilter!)
             .OrderBy(x => x.CreationTime)
             .Take(maxCount)
+            .As<IMongoQueryable<IncomingEventRecord>>()
             .ToListAsync(cancellationToken: cancellationToken);
 
         return outgoingEventRecords

framework/src/Volo.Abp.MongoDB/Volo/Abp/MongoDB/DistributedEvents/MongoDbContextEventOutbox.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Linq.Expressions;
 using System.Threading;
 using System.Threading.Tasks;
 using MongoDB.Driver;
@@ -40,14 +41,22 @@ public class MongoDbContextEventOutbox<TMongoDbContext> : IMongoDbContextEventOu
     }
 
     [UnitOfWork]
-    public virtual async Task<List<OutgoingEventInfo>> GetWaitingEventsAsync(int maxCount, CancellationToken cancellationToken = default)
+    public virtual async Task<List<OutgoingEventInfo>> GetWaitingEventsAsync(int maxCount, Expression<Func<IOutgoingEventInfo, bool>>? filter = null, CancellationToken cancellationToken = default)
     {
         var dbContext = (IHasEventOutbox)await MongoDbContextProvider.GetDbContextAsync(cancellationToken);
 
+        Expression<Func<OutgoingEventRecord, bool>>? transformedFilter = null;
+        if (filter != null)
+        {
+            transformedFilter = InboxOutboxFilterExpressionTransformer.Transform<IOutgoingEventInfo, OutgoingEventRecord>(filter)!;
+        }
+
         var outgoingEventRecords = await dbContext
             .OutgoingEvents.AsQueryable()
+            .WhereIf(transformedFilter != null, transformedFilter!)
             .OrderBy(x => x.CreationTime)
             .Take(maxCount)
+            .As<IMongoQueryable<OutgoingEventRecord>>()
             .ToListAsync(cancellationToken: cancellationToken);
 
         return outgoingEventRecords