Refactor.

src/DotNetCore.CAP.EntityFrameworkCore/ConsistencyDbContext.cs

@@ -24,7 +24,7 @@ namespace DotNetCore.CAP.EntityFrameworkCore
         /// <summary>
         /// Gets or sets the <see cref="DbSet{ConsistencyMessage}"/> of Messages.
         /// </summary>
-        public DbSet<ConsistencyMessage> Messages { get; set; }
+        public DbSet<CapMessage> Messages { get; set; }
 
         /// <summary>
         /// Configures the schema for the identity framework.
@@ -34,7 +34,7 @@ namespace DotNetCore.CAP.EntityFrameworkCore
         /// </param>
         protected override void OnModelCreating(ModelBuilder modelBuilder)
         {
-            modelBuilder.Entity<ConsistencyMessage>(b =>
+            modelBuilder.Entity<CapMessage>(b =>
             {
                 b.HasKey(m => m.Id);
                 b.ToTable("ConsistencyMessages");

src/DotNetCore.CAP.EntityFrameworkCore/ConsistencyEntityFrameworkBuilderExtensions.cs

@@ -18,7 +18,7 @@ namespace Microsoft.Extensions.DependencyInjection
         public static CapBuilder AddEntityFrameworkStores<TContext>(this CapBuilder builder)
             where TContext : DbContext
         {
-            builder.Services.AddScoped<ICapMessageStore, ConsistencyMessageStore<TContext>>();
+            builder.Services.AddScoped<ICapMessageStore, CapMessageStore<TContext>>();
 
             return builder;
         }

src/DotNetCore.CAP.EntityFrameworkCore/ConsistencyMessageStore.cs

 using System;
-using System.Linq;
-using System.Threading;
 using System.Threading.Tasks;
 using DotNetCore.CAP.Infrastructure;
 using Microsoft.EntityFrameworkCore;
@@ -13,186 +11,121 @@ namespace DotNetCore.CAP.EntityFrameworkCore
     /// <typeparam name="ConsistencyMessage">The type representing a message.</typeparam>
     /// <typeparam name="TContext">The type of the data context class used to access the store.</typeparam>
     /// <typeparam name="TKey">The type of the primary key for a message.</typeparam>
-    public class ConsistencyMessageStore<TContext> : ICapMessageStore where TContext : DbContext
+    public class CapMessageStore<TContext> : ICapMessageStore where TContext : DbContext
     {
-        private bool _disposed;
-
         /// <summary>
         /// Constructs a new instance of <see cref="ConsistencyMessageStore{ConsistencyMessage, TContext, TKey}"/>.
         /// </summary>
         /// <param name="context">The <see cref="DbContext"/>.</param>
-        public ConsistencyMessageStore(TContext context)
+        public CapMessageStore(TContext context)
         {
-            if (context == null)
-            {
-                throw new ArgumentNullException(nameof(context));
-            }
-            Context = context;
+            Context = context ?? throw new ArgumentNullException(nameof(context));
         }
 
         public TContext Context { get; private set; }
 
-        private DbSet<ConsistencyMessage> MessageSet { get { return Context.Set<ConsistencyMessage>(); } }
+        private DbSet<CapSentMessage> SentMessages { get { return Context.Set<CapSentMessage>(); } }
+
+        private DbSet<CapReceivedMessage> ReceivedMessages { get { return Context.Set<CapReceivedMessage>(); } }
 
         /// <summary>
-        /// Creates the specified <paramref name="message"/> in the consistency message store.
+        /// Creates the specified <paramref name="message"/> in the cap message store.
         /// </summary>
         /// <param name="message">The message to create.</param>
-        /// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
-        /// <returns>The <see cref="Task"/> that represents the asynchronous operation, containing the <see cref="OperateResult"/> of the creation operation.</returns>
-        public async virtual Task<OperateResult> CreateAsync(ConsistencyMessage message, CancellationToken cancellationToken)
+        public async Task<OperateResult> StoreSentMessageAsync(CapSentMessage message)
         {
-            cancellationToken.ThrowIfCancellationRequested();
-            ThrowIfDisposed();
-            if (message == null)
-            {
-                throw new ArgumentNullException(nameof(message));
-            }
+            if (message == null) throw new ArgumentNullException(nameof(message));
+
             Context.Add(message);
-            await SaveChanges(cancellationToken);
+            await Context.SaveChangesAsync();
             return OperateResult.Success;
         }
 
         /// <summary>
-        /// Deletes the specified <paramref name="message"/> from the consistency message store.
+        /// First Enqueued Message.
         /// </summary>
-        /// <param name="message">The message to delete.</param>
-        /// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
-        /// <returns>The <see cref="Task"/> that represents the asynchronous operation, containing the <see cref="OperateResult"/> of the update operation.</returns>
-        public async virtual Task<OperateResult> DeleteAsync(ConsistencyMessage message, CancellationToken cancellationToken)
+        public async Task<CapSentMessage> GetNextSentMessageToBeEnqueuedAsync()
         {
-            cancellationToken.ThrowIfCancellationRequested();
-            ThrowIfDisposed();
-            if (message == null)
-            {
-                throw new ArgumentNullException(nameof(message));
-            }
+            return await SentMessages.FirstOrDefaultAsync(x => x.StateName == StateName.Enqueued);
+        }
+
+        /// <summary>
+        /// Updates a message in a store as an asynchronous operation.
+        /// </summary>
+        /// <param name="message">The message to update in the store.</param>
+        public async Task<OperateResult> UpdateSentMessageAsync(CapSentMessage message)
+        {
+            if (message == null) throw new ArgumentNullException(nameof(message));
+
+            Context.Attach(message);
+            message.LastRun = DateTime.Now;
+            Context.Update(message);
 
-            Context.Remove(message);
             try
             {
-                await SaveChanges(cancellationToken);
+                await Context.SaveChangesAsync();
+                return OperateResult.Success;
             }
             catch (DbUpdateConcurrencyException ex)
             {
                 return OperateResult.Failed(new OperateError() { Code = "DbUpdateConcurrencyException", Description = ex.Message });
             }
-            return OperateResult.Success;
         }
 
         /// <summary>
-        /// Finds and returns a message, if any, who has the specified <paramref name="messageId"/>.
+        ///  Deletes the specified <paramref name="message"/> from the consistency message store.
         /// </summary>
-        /// <param name="messageId">The message ID to search for.</param>
-        /// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
-        /// <returns>
-        /// The <see cref="Task"/> that represents the asynchronous operation, containing the message matching the specified <paramref name="messageId"/> if it exists.
-        /// </returns>
-        public virtual Task<ConsistencyMessage> FindByIdAsync(string messageId, CancellationToken cancellationToken)
+        /// <param name="message">The message to delete.</param>
+        public async Task<OperateResult> RemoveSentMessageAsync(CapSentMessage message)
         {
-            cancellationToken.ThrowIfCancellationRequested();
-            ThrowIfDisposed();
-            return MessageSet.FindAsync(new object[] { messageId }, cancellationToken);
+            if (message == null) throw new ArgumentNullException(nameof(message));
+
+            Context.Remove(message);
+            try
+            {
+                await Context.SaveChangesAsync();
+                return OperateResult.Success;
+            }
+            catch (DbUpdateConcurrencyException ex)
+            {
+                return OperateResult.Failed(new OperateError() { Code = "DbUpdateConcurrencyException", Description = ex.Message });
+            }
         }
 
         /// <summary>
-        /// Gets the message identifier for the specified <paramref name="message"/>.
+        /// Creates the specified <paramref name="message"/> in the consistency message store.
         /// </summary>
-        /// <param name="message">The message whose identifier should be retrieved.</param>
-        /// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
-        /// <returns>The <see cref="Task"/> that represents the asynchronous operation, containing the identifier for the specified <paramref name="message"/>.</returns>
-        public Task<string> GeConsistencyMessageIdAsync(ConsistencyMessage message, CancellationToken cancellationToken)
+        /// <param name="message">The message to create.</param>
+        public async Task<OperateResult> StoreReceivedMessageAsync(CapReceivedMessage message)
         {
-            cancellationToken.ThrowIfCancellationRequested();
-            ThrowIfDisposed();
-            if (message == null)
-            {
-                throw new ArgumentNullException(nameof(message));
-            }
-            return Task.FromResult(message.Id);
+            if (message == null) throw new ArgumentNullException(nameof(message));
+
+            Context.Add(message);
+            await Context.SaveChangesAsync();
+            return OperateResult.Success;
         }
 
         /// <summary>
         /// Updates the specified <paramref name="message"/> in the message store.
         /// </summary>
         /// <param name="message">The message to update.</param>
-        /// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
-        /// <returns>The <see cref="Task"/> that represents the asynchronous operation, containing the <see cref="OperateResult"/> of the update operation.</returns>
-        public async virtual Task<OperateResult> UpdateAsync(ConsistencyMessage message, CancellationToken cancellationToken)
+        public async Task<OperateResult> UpdateReceivedMessageAsync(CapReceivedMessage message)
         {
-            cancellationToken.ThrowIfCancellationRequested();
-            ThrowIfDisposed();
-            if (message == null)
-            {
-                throw new ArgumentNullException(nameof(message));
-            }
+            if (message == null) throw new ArgumentNullException(nameof(message));
 
             Context.Attach(message);
-            message.UpdateTime = DateTime.Now;
+            message.LastRun = DateTime.Now;
             Context.Update(message);
+
             try
             {
-                await SaveChanges(cancellationToken);
+                await Context.SaveChangesAsync();
+                return OperateResult.Success;
             }
             catch (DbUpdateConcurrencyException ex)
             {
                 return OperateResult.Failed(new OperateError() { Code = "DbUpdateConcurrencyException", Description = ex.Message });
             }
-            return OperateResult.Success;
-        }
-
-        public Task<ConsistencyMessage> GetFirstEnqueuedMessageAsync(CancellationToken cancellationToken)
-        {
-            cancellationToken.ThrowIfCancellationRequested();
-            return MessageSet.AsNoTracking().Where(x => x.Status == MessageStatus.WaitForSend).FirstOrDefaultAsync(cancellationToken);
-        }
-
-        //public void ChangeState(ConsistencyMessage message, MessageStatus status) {
-        //    Context.Attach(message);
-        //    message.Status = status;
-        //    Context.Update(message);
-        //    try {
-        //        await SaveChanges(cancellationToken);
-        //    }
-        //    catch (DbUpdateConcurrencyException ex) {
-        //        return OperateResult.Failed(new OperateError() { Code = "DbUpdateConcurrencyException", Description = ex.Message });
-        //    }
-        //    return OperateResult.Success;
-        //}
-
-        /// <summary>
-        /// Gets or sets a flag indicating if changes should be persisted after CreateAsync, UpdateAsync and DeleteAsync are called.
-        /// </summary>
-        /// <value>
-        /// True if changes should be automatically persisted, otherwise false.
-        /// </value>
-        public bool AutoSaveChanges { get; set; } = true;
-
-        /// <summary>Saves the current store.</summary>
-        /// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
-        /// <returns>The <see cref="Task"/> that represents the asynchronous operation.</returns>
-        protected Task SaveChanges(CancellationToken cancellationToken)
-        {
-            return AutoSaveChanges ? Context.SaveChangesAsync(cancellationToken) : Task.CompletedTask;
-        }
-
-        /// <summary>
-        /// Throws if this class has been disposed.
-        /// </summary>
-        protected void ThrowIfDisposed()
-        {
-            if (_disposed)
-            {
-                throw new ObjectDisposedException(GetType().Name);
-            }
-        }
-
-        /// <summary>
-        /// Dispose the store
-        /// </summary>
-        public void Dispose()
-        {
-            _disposed = true;
         }
     }
 }
\ No newline at end of file

src/DotNetCore.CAP.Kafka/IProcessor.Producer.cs

@@ -83,14 +83,14 @@ namespace DotNetCore.CAP.Kafka
                 var messageStore = provider.GetRequiredService<ICapMessageStore>();
                 try
                 {
-                    var message = await messageStore.GetFirstEnqueuedMessageAsync(_cts.Token);
+                    var message = await messageStore.GetNextSentMessageToBeEnqueuedAsync();
                     if (message != null)
                     {
                         var sp = Stopwatch.StartNew();
-                        message.Status = MessageStatus.Processing;
-                        await messageStore.UpdateAsync(message, _cts.Token);
+                        message.StateName = StateName.Processing;
+                        await messageStore.UpdateSentMessageAsync(message);
 
-                        var jobResult = ExecuteJob(message.Topic, message.Payload);
+                        var jobResult = ExecuteJob(message.KeyName, message.Content);
 
                         sp.Stop();
 
@@ -100,14 +100,15 @@ namespace DotNetCore.CAP.Kafka
                         }
                         else
                         {
-                            message.Status = MessageStatus.Successed;
-                            await messageStore.UpdateAsync(message, _cts.Token);
-                            //await messageStore.DeleteAsync(message, _cts.Token);
+                            //TODO ： the state will be deleted when release.
+                            message.StateName = StateName.Succeeded;
+                            await messageStore.UpdateSentMessageAsync(message);
+
                             _logger.JobExecuted(sp.Elapsed.TotalSeconds);
                         }
                     }
                 }
-                catch (Exception )
+                catch (Exception)
                 {
                     return false;
                 }

src/DotNetCore.CAP.Kafka/KafkaConsumerClient.cs

@@ -14,7 +14,7 @@ namespace DotNetCore.CAP.Kafka
 
         private Consumer<Null, string> _consumerClient;
 
-        public event EventHandler<DeliverMessage> MessageReceieved;
+        public event EventHandler<MessageBase> MessageReceieved;
 
         public IDeserializer<string> StringDeserializer { get; set; }
 
@@ -69,11 +69,10 @@ namespace DotNetCore.CAP.Kafka
 
         private void ConsumerClient_OnMessage(object sender, Message<Null, string> e)
         {
-            var message = new DeliverMessage
+            var message = new MessageBase
             {
-                MessageKey = e.Topic,
-                Value = e.Value,
-                Body = Encoding.UTF8.GetBytes(e.Value)
+                KeyName = e.Topic,
+                Content = e.Value
             };
             MessageReceieved?.Invoke(sender, message);
         }

src/DotNetCore.CAP.Kafka/KafkaTopicAttribute.cs

@@ -11,7 +11,8 @@ namespace DotNetCore.CAP.Kafka
             : this(topicName, partition, 0) { }
 
         public KafkaTopicAttribute(string topicName, int partition, long offset)
-            : base(topicName) {
+            : base(topicName)
+        {
             Offset = offset;
             Partition = partition;
         }
@@ -24,7 +25,8 @@ namespace DotNetCore.CAP.Kafka
 
         public bool IsOffset { get { return Offset == 0; } }
 
-        public override string ToString() {
+        public override string ToString()
+        {
             return Name;
         }
     }

src/DotNetCore.CAP.RabbitMQ/RabbitMQConsumerClient.cs

@@ -19,7 +19,7 @@ namespace DotNetCore.CAP.RabbitMQ
 
         private string _queueName;
 
-        public event EventHandler<DeliverMessage> MessageReceieved;
+        public event EventHandler<MessageBase> MessageReceieved;
 
         public RabbitMQConsumerClient(string exchange, string hostName)
         {
@@ -65,11 +65,10 @@ namespace DotNetCore.CAP.RabbitMQ
 
         private void OnConsumerReceived(object sender, BasicDeliverEventArgs e)
         {
-            var message = new DeliverMessage
+            var message = new MessageBase
             {
-                MessageKey = e.RoutingKey,
-                Body = e.Body,
-                Value = Encoding.UTF8.GetString(e.Body)
+                KeyName = e.RoutingKey,
+                Content = Encoding.UTF8.GetString(e.Body)
             };
             MessageReceieved?.Invoke(sender, message);
         }

src/DotNetCore.CAP.RabbitMQ/RabbitMQProducerClient.cs

@@ -38,7 +38,8 @@ namespace DotNetCore.CAP.RabbitMQ
             }
         }
 
-        public Task SendAsync<T>(string topic, T contentObj) {
+        public Task SendAsync<T>(string topic, T contentObj)
+        {
             throw new NotImplementedException();
         }
     }

src/DotNetCore.CAP/Abstractions/ConsumerContext.cs

@@ -13,7 +13,7 @@ namespace DotNetCore.CAP.Abstractions
         /// </summary>
         /// <param name="descriptor">consumer method descriptor. </param>
         /// <param name="message"> reveied message.</param>
-        public ConsumerContext(ConsumerExecutorDescriptor descriptor, DeliverMessage message)
+        public ConsumerContext(ConsumerExecutorDescriptor descriptor, MessageBase message)
         {
             ConsumerDescriptor = descriptor ?? throw new ArgumentNullException(nameof(descriptor));
             DeliverMessage = message ?? throw new ArgumentNullException(nameof(message));
@@ -27,6 +27,6 @@ namespace DotNetCore.CAP.Abstractions
         /// <summary>
         /// consumer reveived message.
         /// </summary>
-        public DeliverMessage DeliverMessage { get; set; }
+        public MessageBase DeliverMessage { get; set; }
     }
 }
\ No newline at end of file

src/DotNetCore.CAP/Abstractions/IConsumerServiceSelector.cs

 using System.Collections.Generic;
-using DotNetCore.CAP.Abstractions;
 
 namespace DotNetCore.CAP.Abstractions
 {
     /// <summary>
-    /// Defines an interface for selecting an cosumer service method to invoke for the current message. 
+    /// Defines an interface for selecting an cosumer service method to invoke for the current message.
     /// </summary>
     public interface IConsumerServiceSelector
     {
@@ -17,8 +16,8 @@ namespace DotNetCore.CAP.Abstractions
         IReadOnlyList<ConsumerExecutorDescriptor> SelectCandidates(CapStartContext context);
 
         /// <summary>
-        /// Selects the best <see cref="ConsumerExecutorDescriptor"/> candidate from <paramref name="candidates"/> for the 
-        /// current message associated with <paramref name="context"/>.
+        /// Selects the best <see cref="ConsumerExecutorDescriptor"/> candidate from <paramref name="candidates"/> for the
+        /// current message associated.
         /// </summary>
         /// <param name="key">topic or exchange router key.</param>
         /// <param name="candidates">the set of <see cref="ConsumerExecutorDescriptor"/> candidates.</param>

src/DotNetCore.CAP/Abstractions/ModelBinding/IModelBinder.cs

@@ -21,7 +21,7 @@ namespace DotNetCore.CAP.Abstractions.ModelBinding
         /// </para>
         /// <para>
         /// A model binder that completes successfully should set <see cref="ModelBindingContext.Result"/> to
-        /// a value returned from <see cref="ModelBindingResult.Success"/>. 
+        /// a value returned from <see cref="ModelBindingResult.Success"/>.
         /// </para>
         /// </returns>
         Task BindModelAsync(ModelBindingContext bindingContext);

src/DotNetCore.CAP/Abstractions/ModelBinding/ModelBindingContext.cs

@@ -18,7 +18,7 @@ namespace DotNetCore.CAP.Abstractions.ModelBinding
         public object Model { get; set; }
 
         /// <summary>
-        /// Gets or sets the name of the model. 
+        /// Gets or sets the name of the model.
         /// </summary>
         public string ModelName { get; set; }
 

src/DotNetCore.CAP/ICapMessageStore.cs

-using System.Threading;
-using System.Threading.Tasks;
+using System.Threading.Tasks;
 using DotNetCore.CAP.Infrastructure;
 
 namespace DotNetCore.CAP
@@ -11,49 +10,40 @@ namespace DotNetCore.CAP
     public interface ICapMessageStore
     {
         /// <summary>
-        /// Finds and returns a message, if any, who has the specified <paramref name="messageId"/>.
+        ///  Creates a new message in a store as an asynchronous operation.
         /// </summary>
-        /// <param name="messageId">The message ID to search for.</param>
-        /// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
-        /// <returns>
-        /// The <see cref="Task"/> that represents the asynchronous operation, containing the message matching the specified <paramref name="messageId"/> if it exists.
-        /// </returns>
-        Task<ConsistencyMessage> FindByIdAsync(string messageId, CancellationToken cancellationToken);
+        /// <param name="message">The message to create in the store.</param>
+        Task<OperateResult> StoreSentMessageAsync(CapSentMessage message);
 
         /// <summary>
-        ///  Creates a new message in a store as an asynchronous operation.
+        /// Fetches the next message to be executed.
         /// </summary>
-        /// <param name="message">The message to create in the store.</param>
-        /// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
-        /// <returns>A <see cref="Task{TResult}"/> that represents the <see cref="OperateResult"/> of the asynchronous query.</returns>
-        Task<OperateResult> CreateAsync(ConsistencyMessage message, CancellationToken cancellationToken);
+        /// <returns></returns>
+        Task<CapSentMessage> GetNextSentMessageToBeEnqueuedAsync();
 
         /// <summary>
         /// Updates a message in a store as an asynchronous operation.
         /// </summary>
         /// <param name="message">The message to update in the store.</param>
-        /// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
-        /// <returns>A <see cref="Task{TResult}"/> that represents the <see cref="OperateResult"/> of the asynchronous query.</returns>
-        Task<OperateResult> UpdateAsync(ConsistencyMessage message, CancellationToken cancellationToken);
+        Task<OperateResult> UpdateSentMessageAsync(CapSentMessage message);
 
         /// <summary>
         /// Deletes a message from the store as an asynchronous operation.
         /// </summary>
         /// <param name="message">The message to delete in the store.</param>
-        /// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
-        /// <returns>A <see cref="Task{TResult}"/> that represents the <see cref="OperateResult"/> of the asynchronous query.</returns>
-        Task<OperateResult> DeleteAsync(ConsistencyMessage message, CancellationToken cancellationToken);
+        Task<OperateResult> RemoveSentMessageAsync(CapSentMessage message);
 
         /// <summary>
-        /// Gets the ID for a message from the store as an asynchronous operation.
+        /// Creates a new message in a store as an asynchronous operation.
         /// </summary>
-        /// <param name="message">The message whose ID should be returned.</param>
-        /// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
-        /// <returns>A <see cref="Task{TResult}"/> that contains the ID of the message.</returns>
-        Task<string> GeConsistencyMessageIdAsync(ConsistencyMessage message, CancellationToken cancellationToken);
-
-        Task<ConsistencyMessage> GetFirstEnqueuedMessageAsync(CancellationToken cancellationToken);
+        /// <param name="message"></param>
+        /// <returns></returns>
+        Task<OperateResult> StoreReceivedMessageAsync(CapReceivedMessage message);
 
-        // void ChangeState(ConsistencyMessage message, MessageStatus status);
+        /// <summary>
+        /// Updates a message in a store as an asynchronous operation.
+        /// </summary>
+        /// <param name="message">The message to update in the store.</param>
+        Task<OperateResult> UpdateReceivedMessageAsync(CapReceivedMessage message);
     }
 }
\ No newline at end of file

src/DotNetCore.CAP/ICapProducerService.Default.cs

 using System;
-using System.Threading;
 using System.Threading.Tasks;
 using DotNetCore.CAP.Infrastructure;
 using Microsoft.Extensions.Logging;
@@ -13,7 +12,6 @@ namespace DotNetCore.CAP
     {
         private readonly ICapMessageStore _store;
         private readonly ILogger _logger;
-        private readonly CancellationTokenSource _cts;
 
         public DefaultProducerService(
             ICapMessageStore store,
@@ -21,7 +19,6 @@ namespace DotNetCore.CAP
         {
             _store = store;
             _logger = logger;
-            _cts = new CancellationTokenSource();
         }
 
         public Task SendAsync(string topic, string content)
@@ -45,20 +42,17 @@ namespace DotNetCore.CAP
 
         private async Task StoreMessage(string topic, string content)
         {
-            var message = new ConsistencyMessage
+            var message = new CapSentMessage
             {
-                Topic = topic,
-                Payload = content
+                KeyName = topic,
+                Content = content
             };
 
-            await _store.CreateAsync(message, _cts.Token);
+            await _store.StoreSentMessageAsync(message);
 
             WaitHandleEx.PulseEvent.Set();
 
-            if (_logger.IsEnabled(LogLevel.Debug))
-            {
-                _logger.LogDebug("Enqueuing a topic to be store. topic:{topic}, content:{content}", topic, content);
-            }
+            _logger.EnqueuingMessage(topic, content);
         }
     }
 }
\ No newline at end of file

src/DotNetCore.CAP/IConsumerClient.cs

 using System;
-using System.Collections.Generic;
-using System.Text;
 using DotNetCore.CAP.Infrastructure;
 
 namespace DotNetCore.CAP
 {
     /// <summary>
-    /// consumer client 
+    /// consumer client
     /// </summary>
     public interface IConsumerClient : IDisposable
     {
@@ -16,6 +14,6 @@ namespace DotNetCore.CAP
 
         void Listening(TimeSpan timeout);
 
-        event EventHandler<DeliverMessage> MessageReceieved;
+        event EventHandler<MessageBase> MessageReceieved;
     }
-}
+}
\ No newline at end of file

src/DotNetCore.CAP/IConsumerClientFactory.cs

-using System;
-using System.Collections.Generic;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace DotNetCore.CAP
+namespace DotNetCore.CAP
 {
     /// <summary>
     /// Consumer client factory to create consumer client instance.
@@ -18,4 +13,4 @@ namespace DotNetCore.CAP
         /// <returns></returns>
         IConsumerClient Create(string groupId, string clientHostAddress);
     }
-}
+}
\ No newline at end of file

src/DotNetCore.CAP/IConsumerHandler.Default.cs

 using System;
 using System.Linq;
-using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 using DotNetCore.CAP.Abstractions;
@@ -24,7 +23,7 @@ namespace DotNetCore.CAP
         private readonly ICapMessageStore _messageStore;
         private readonly CancellationTokenSource _cts;
 
-        public event EventHandler<ConsistencyMessage> MessageReceieved;
+        public event EventHandler<CapMessage> MessageReceieved;
 
         private CapStartContext _context;
         private Task _compositeTask;
@@ -37,7 +36,8 @@ namespace DotNetCore.CAP
             ILoggerFactory loggerFactory,
             ICapMessageStore messageStore,
             MethodMatcherCache selector,
-            IOptions<CapOptions> options) {
+            IOptions<CapOptions> options)
+        {
             _selector = selector;
             _logger = loggerFactory.CreateLogger<ConsumerHandler>();
             _loggerFactory = loggerFactory;
@@ -49,23 +49,29 @@ namespace DotNetCore.CAP
             _cts = new CancellationTokenSource();
         }
 
-        protected virtual void OnMessageReceieved(ConsistencyMessage message) {
+        protected virtual void OnMessageReceieved(CapMessage message)
+        {
             MessageReceieved?.Invoke(this, message);
         }
 
-        public void Start() {
+        public void Start()
+        {
             _context = new CapStartContext(_serviceProvider, _cts.Token);
 
             var matchs = _selector.GetCandidatesMethods(_context);
 
             var groupingMatchs = matchs.GroupBy(x => x.Value.Attribute.GroupOrExchange);
 
-            foreach (var matchGroup in groupingMatchs) {
-                Task.Factory.StartNew(() => {
-                    using (var client = _consumerClientFactory.Create(matchGroup.Key, _options.BrokerUrlList)) {
+            foreach (var matchGroup in groupingMatchs)
+            {
+                Task.Factory.StartNew(() =>
+                {
+                    using (var client = _consumerClientFactory.Create(matchGroup.Key, _options.BrokerUrlList))
+                    {
                         client.MessageReceieved += OnMessageReceieved;
 
-                        foreach (var item in matchGroup) {
+                        foreach (var item in matchGroup)
+                        {
                             client.Subscribe(item.Key);
                         }
 
@@ -76,19 +82,17 @@ namespace DotNetCore.CAP
             _compositeTask = Task.CompletedTask;
         }
 
-        public virtual void OnMessageReceieved(object sender, DeliverMessage message) {
-            var consistencyMessage = new ConsistencyMessage() {
-                Topic = message.MessageKey,
-                Payload = "Reveived:" + Encoding.UTF8.GetString(message.Body),
-                Status = MessageStatus.Received
-            };
+        public virtual void OnMessageReceieved(object sender, MessageBase message)
+        {
+            var capMessage = new CapReceivedMessage(message);
 
-            _logger.LogInformation("message receieved message topic name: " + consistencyMessage.Id);
+            _logger.LogInformation("message receieved message topic name: " + capMessage.Id);
 
-            _messageStore.CreateAsync(consistencyMessage, _cts.Token).Wait();
+            _messageStore.StoreReceivedMessageAsync(capMessage).Wait();
 
-            try {
-                var executeDescriptor = _selector.GetTopicExector(message.MessageKey);
+            try
+            {
+                var executeDescriptor = _selector.GetTopicExector(message.KeyName);
 
                 var consumerContext = new ConsumerContext(executeDescriptor, message);
 
@@ -96,15 +100,18 @@ namespace DotNetCore.CAP
 
                 invoker.InvokeAsync();
 
-                _messageStore.UpdateAsync(consistencyMessage, _cts.Token).Wait();
+                _messageStore.UpdateReceivedMessageAsync(capMessage).Wait();
             }
-            catch (Exception ex) {
+            catch (Exception ex)
+            {
                 _logger.LogError("exception raised when excute method : " + ex.Message);
             }
         }
 
-        public void Dispose() {
-            if (_disposed) {
+        public void Dispose()
+        {
+            if (_disposed)
+            {
                 return;
             }
             _disposed = true;
@@ -112,12 +119,15 @@ namespace DotNetCore.CAP
             _logger.ServerShuttingDown();
             _cts.Cancel();
 
-            try {
+            try
+            {
                 _compositeTask.Wait((int)TimeSpan.FromSeconds(60).TotalMilliseconds);
             }
-            catch (AggregateException ex) {
+            catch (AggregateException ex)
+            {
                 var innerEx = ex.InnerExceptions[0];
-                if (!(innerEx is OperationCanceledException)) {
+                if (!(innerEx is OperationCanceledException))
+                {
                     _logger.ExpectedOperationCanceledException(innerEx);
                 }
             }

src/DotNetCore.CAP/Internal/IConsumerInvoker.Default.cs

 using System;
-using System.Text;
 using System.Threading.Tasks;
 using DotNetCore.CAP.Abstractions;
 using DotNetCore.CAP.Abstractions.ModelBinding;
@@ -41,13 +40,13 @@ namespace DotNetCore.CAP.Internal
                     {
                         var obj = ActivatorUtilities.GetServiceOrCreateInstance(_serviceProvider, _consumerContext.ConsumerDescriptor.ImplTypeInfo.AsType());
 
-                        var bodyString = Encoding.UTF8.GetString(_consumerContext.DeliverMessage.Body);
+                        var value = _consumerContext.DeliverMessage.Content;
 
                         if (_executor.MethodParameters.Length > 0)
                         {
                             var firstParameter = _executor.MethodParameters[0];
 
-                            var bindingContext = ModelBindingContext.CreateBindingContext(bodyString,
+                            var bindingContext = ModelBindingContext.CreateBindingContext(value,
                                 firstParameter.Name, firstParameter.ParameterType);
 
                             _modelBinder.BindModelAsync(bindingContext);

src/DotNetCore.CAP/Internal/IConsumerServiceSelector.Default.cs

@@ -24,7 +24,8 @@ namespace DotNetCore.CAP.Internal
         }
 
         /// <summary>
-        /// 
+        /// Selects the best <see cref="ConsumerExecutorDescriptor"/> candidate from <paramref name="candidates"/> for the
+        /// current message associated.
         /// </summary>
         /// <param name="key"></param>
         /// <param name="executeDescriptor"></param>

src/DotNetCore.CAP/Internal/MethodMatcherCache.cs

 using System;
 using System.Collections.Concurrent;
 using DotNetCore.CAP.Abstractions;
-using DotNetCore.CAP.Infrastructure;
 
 namespace DotNetCore.CAP.Internal
 {

src/DotNetCore.CAP/LoggerExtensions.cs

@@ -17,6 +17,8 @@ namespace DotNetCore.CAP
         private static Action<ILogger, string, double, Exception> _cronJobExecuted;
         private static Action<ILogger, string, Exception> _cronJobFailed;
 
+        private static Action<ILogger, string, string, Exception> _enqueuingMessage;
+
         static LoggerExtensions()
         {
             _serverStarting = LoggerMessage.Define<int, int>(
@@ -53,6 +55,16 @@ namespace DotNetCore.CAP
                 LogLevel.Warning,
                 4,
                 "Cron job '{jobName}' failed to execute.");
+
+            _enqueuingMessage = LoggerMessage.Define<string, string>(
+                LogLevel.Debug,
+                2,
+                "Enqueuing a topic to the store. NameKey: {NameKey}. Content: {Content}");
+        }
+
+        public static void EnqueuingMessage(this ILogger logger, string nameKey, string content)
+        {
+            _enqueuingMessage(logger, nameKey, content, null);
         }
 
         public static void ServerStarting(this ILogger logger, int machineProcessorCount, int processorCount)

test/DotNetCore.CAP.Test/CAP.BuilderTest.cs

@@ -54,6 +54,10 @@ namespace DotNetCore.CAP.Test
             {
                 throw new NotImplementedException();
             }
+
+            public Task SendAsync<T>(string topic, T contentObj) {
+                throw new NotImplementedException();
+            }
         }
 
 
@@ -67,32 +71,32 @@ namespace DotNetCore.CAP.Test
 
         private class MyMessageStore : ICapMessageStore
         {
-            public Task<OperateResult> CreateAsync(ConsistencyMessage message, CancellationToken cancellationToken)
+            public Task<CapSentMessage> GetNextSentMessageToBeEnqueuedAsync()
             {
                 throw new NotImplementedException();
             }
 
-            public Task<OperateResult> DeleteAsync(ConsistencyMessage message, CancellationToken cancellationToken)
+            public Task<OperateResult> RemoveSentMessageAsync(CapSentMessage message)
             {
                 throw new NotImplementedException();
             }
 
-            public Task<ConsistencyMessage> FindByIdAsync(string messageId, CancellationToken cancellationToken)
+            public Task<OperateResult> StoreReceivedMessageAsync(CapReceivedMessage message)
             {
                 throw new NotImplementedException();
             }
 
-            public Task<string> GeConsistencyMessageIdAsync(ConsistencyMessage message, CancellationToken cancellationToken)
+            public Task<OperateResult> StoreSentMessageAsync(CapSentMessage message)
             {
                 throw new NotImplementedException();
             }
 
-            public Task<ConsistencyMessage> GetFirstEnqueuedMessageAsync(CancellationToken cancellationToken)
+            public Task<OperateResult> UpdateReceivedMessageAsync(CapReceivedMessage message)
             {
                 throw new NotImplementedException();
             }
 
-            public Task<OperateResult> UpdateAsync(ConsistencyMessage message, CancellationToken cancellationToken)
+            public Task<OperateResult> UpdateSentMessageAsync(CapSentMessage message)
             {
                 throw new NotImplementedException();
             }

test/DotNetCore.CAP.Test/NoopMessageStore.cs

@@ -7,42 +7,32 @@ namespace DotNetCore.CAP.Test
 {
     public class NoopMessageStore : ICapMessageStore
     {
-        public Task<OperateResult> CreateAsync(ConsistencyMessage message, CancellationToken cancellationToken)
+        public Task<CapSentMessage> GetNextSentMessageToBeEnqueuedAsync()
         {
             throw new NotImplementedException();
         }
 
-        public Task<OperateResult> DeleteAsync(ConsistencyMessage message, CancellationToken cancellationToken)
+        public Task<OperateResult> RemoveSentMessageAsync(CapSentMessage message)
         {
             throw new NotImplementedException();
         }
 
-        public void Dispose()
+        public Task<OperateResult> StoreReceivedMessageAsync(CapReceivedMessage message)
         {
             throw new NotImplementedException();
         }
 
-        public Task<ConsistencyMessage> FindByIdAsync(string messageId, CancellationToken cancellationToken)
+        public Task<OperateResult> StoreSentMessageAsync(CapSentMessage message)
         {
             throw new NotImplementedException();
         }
 
-        public Task<string> GeConsistencyMessageIdAsync(ConsistencyMessage message, CancellationToken cancellationToken)
+        public Task<OperateResult> UpdateReceivedMessageAsync(CapReceivedMessage message)
         {
             throw new NotImplementedException();
         }
 
-        public Task<ConsistencyMessage> GetFirstEnqueuedMessageAsync(CancellationToken cancellationToken)
-        {
-            throw new NotImplementedException();
-        }
-
-        public Task<string> GetMessageIdAsync(ConsistencyMessage message, CancellationToken cancellationToken)
-        {
-            throw new NotImplementedException();
-        }
-
-        public Task<OperateResult> UpdateAsync(ConsistencyMessage message, CancellationToken cancellationToken)
+        public Task<OperateResult> UpdateSentMessageAsync(CapSentMessage message)
         {
             throw new NotImplementedException();
         }