cleanup code.

src/DotNetCore.CAP.EntityFrameworkCore/CAP.EFOptions.cs

 using System;
 
+// ReSharper disable once CheckNamespace
 namespace DotNetCore.CAP
 {
     public class EFOptions

src/DotNetCore.CAP.EntityFrameworkCore/CAP.Options.Extensions.cs

@@ -2,6 +2,7 @@
 using DotNetCore.CAP;
 using Microsoft.EntityFrameworkCore;
 
+// ReSharper disable once CheckNamespace
 namespace Microsoft.Extensions.DependencyInjection
 {
     public static class CapOptionsExtensions

src/DotNetCore.CAP.EntityFrameworkCore/CAP.SqlServerCapOptionsExtension.cs

@@ -3,11 +3,12 @@ using DotNetCore.CAP.EntityFrameworkCore;
 using DotNetCore.CAP.Processor;
 using Microsoft.Extensions.DependencyInjection;
 
+// ReSharper disable once CheckNamespace
 namespace DotNetCore.CAP
 {
     public class SqlServerCapOptionsExtension : ICapOptionsExtension
     {
-        private Action<SqlServerOptions> _configure;
+        private readonly Action<SqlServerOptions> _configure;
 
         public SqlServerCapOptionsExtension(Action<SqlServerOptions> configure)
         {

src/DotNetCore.CAP.EntityFrameworkCore/CAP.SqlServerOptions.cs

-namespace DotNetCore.CAP
+// ReSharper disable once CheckNamespace
+namespace DotNetCore.CAP
 {
     public class SqlServerOptions : EFOptions
     {
         /// <summary>
         /// Gets or sets the database's connection string that will be used to store database entities.
         /// </summary>
-        public string ConnectionString { get; set; } //= "Server=DESKTOP-M9R8T31;Initial Catalog=Test;User Id=sa;Password=P@ssw0rd;MultipleActiveResultSets=True";
+        public string ConnectionString { get; set; }
     }
 }
\ No newline at end of file

src/DotNetCore.CAP.EntityFrameworkCore/SqlServerFetchedMessage.cs

@@ -66,6 +66,7 @@ namespace DotNetCore.CAP.EntityFrameworkCore
                 }
                 catch
                 {
+                    // ignored
                 }
             }
         }

src/DotNetCore.CAP.EntityFrameworkCore/SqlServerStorage.cs

@@ -11,8 +11,8 @@ namespace DotNetCore.CAP.EntityFrameworkCore
 {
     public class SqlServerStorage : IStorage
     {
-        private IServiceProvider _provider;
-        private ILogger _logger;
+        private readonly IServiceProvider _provider;
+        private readonly ILogger _logger;
 
         public SqlServerStorage(
             IServiceProvider provider,
@@ -43,7 +43,7 @@ namespace DotNetCore.CAP.EntityFrameworkCore
 
         protected virtual string CreateDbTablesScript(string schema)
         {
-            var batchSQL =
+            var batchSql =
 $@"
 IF NOT EXISTS (SELECT * FROM sys.schemas WHERE name = '{schema}')
 BEGIN
@@ -96,7 +96,7 @@ CREATE TABLE [{schema}].[Published](
 ) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
 END
 GO";
-            return batchSQL;
+            return batchSql;
         }
     }
 }
\ No newline at end of file

src/DotNetCore.CAP.EntityFrameworkCore/SqlServerStorageConnection.cs

@@ -95,15 +95,13 @@ VALUES(@Name,@Group,@Content,@Retries,@Added,@ExpiresAt,@StatusName);";
 
         private async Task<IFetchedMessage> FetchNextMessageCoreAsync(string sql, object args = null)
         {
-            FetchedMessage fetched = null;
-
             using (var connection = new SqlConnection(_options.ConnectionString))
             {
                 using (var transaction = connection.BeginTransaction(IsolationLevel.ReadCommitted))
                 {
                     try
                     {
-                        fetched = await connection.QueryFirstOrDefaultAsync<FetchedMessage>(sql, args, transaction);
+                        var fetched = await connection.QueryFirstOrDefaultAsync<FetchedMessage>(sql, args, transaction);
 
                         if (fetched == null)
                             return null;

src/DotNetCore.CAP.EntityFrameworkCore/SqlServerStorageTransaction.cs

@@ -9,20 +9,17 @@ namespace DotNetCore.CAP.EntityFrameworkCore
 {
     public class SqlServerStorageTransaction : IStorageTransaction, IDisposable
     {
-        private readonly SqlServerStorageConnection _connection;
-        private readonly SqlServerOptions _options;
         private readonly string _schema;
 
-        private IDbTransaction _dbTransaction;
-        private IDbConnection _dbConnection;
+        private readonly IDbTransaction _dbTransaction;
+        private readonly IDbConnection _dbConnection;
 
         public SqlServerStorageTransaction(SqlServerStorageConnection connection)
         {
-            _connection = connection;
-            _options = _connection.Options;
-            _schema = _options.Schema;
+            var options = connection.Options;
+            _schema = options.Schema;
 
-            _dbConnection = new SqlConnection(_options.ConnectionString);
+            _dbConnection = new SqlConnection(options.ConnectionString);
             _dbTransaction = _dbConnection.BeginTransaction(IsolationLevel.ReadCommitted);
         }
 

src/DotNetCore.CAP.Kafka/CAP.KafkaCapOptionsExtension.cs

@@ -2,11 +2,12 @@
 using DotNetCore.CAP.Kafka;
 using Microsoft.Extensions.DependencyInjection;
 
+// ReSharper disable once CheckNamespace
 namespace DotNetCore.CAP
 {
     public class KafkaCapOptionsExtension : ICapOptionsExtension
     {
-        private Action<KafkaOptions> _configure;
+        private readonly Action<KafkaOptions> _configure;
 
         public KafkaCapOptionsExtension(Action<KafkaOptions> configure)
         {
@@ -20,7 +21,7 @@ namespace DotNetCore.CAP
             var kafkaOptions = new KafkaOptions();
             _configure(kafkaOptions);
             services.AddSingleton(kafkaOptions);
-
+            
             services.AddSingleton<IConsumerClientFactory, KafkaConsumerClientFactory>();
             services.AddTransient<IQueueExecutor, PublishQueueExecutor>();
         }

src/DotNetCore.CAP.Kafka/CAP.KafkaOptions.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 
+// ReSharper disable once CheckNamespace
 namespace DotNetCore.CAP
 {
     /// <summary>

src/DotNetCore.CAP.Kafka/CAP.Options.Extensions.cs

 using System;
 using DotNetCore.CAP;
 
+// ReSharper disable once CheckNamespace
 namespace Microsoft.Extensions.DependencyInjection
 {
     public static class CapOptionsExtensions

src/DotNetCore.CAP.RabbitMQ/CAP.Options.Extensions.cs

 using System;
 using DotNetCore.CAP;
 
+// ReSharper disable once CheckNamespace
 namespace Microsoft.Extensions.DependencyInjection
 {
     public static class CapOptionsExtensions

src/DotNetCore.CAP.RabbitMQ/CAP.RabbiMQOptions.cs

-namespace DotNetCore.CAP
+// ReSharper disable once CheckNamespace
+namespace DotNetCore.CAP
 {
     public class RabbitMQOptions
     {
@@ -34,7 +35,7 @@
         public string HostName { get; set; } = "localhost";
 
         /// <summary> The topic exchange type. </summary>
-        internal string EXCHANGE_TYPE = "topic";
+        internal const string ExchangeType = "topic";
 
         /// <summary>
         /// Password to use when authenticating to the server.

src/DotNetCore.CAP.RabbitMQ/CAP.RabbitMQCapOptionsExtension.cs

@@ -2,11 +2,12 @@
 using DotNetCore.CAP.RabbitMQ;
 using Microsoft.Extensions.DependencyInjection;
 
+// ReSharper disable once CheckNamespace
 namespace DotNetCore.CAP
 {
     public class RabbitMQCapOptionsExtension : ICapOptionsExtension
     {
-        private Action<RabbitMQOptions> _configure;
+        private readonly Action<RabbitMQOptions> _configure;
 
         public RabbitMQCapOptionsExtension(Action<RabbitMQOptions> configure)
         {

src/DotNetCore.CAP.RabbitMQ/PublishQueueExecutor.cs

@@ -11,7 +11,7 @@ namespace DotNetCore.CAP.RabbitMQ
     public class PublishQueueExecutor : BasePublishQueueExecutor
     {
         private readonly ILogger _logger;
-        private readonly RabbitMQOptions _rabbitMqOptions;
+        private readonly RabbitMQOptions _rabbitMQOptions;
 
         public PublishQueueExecutor(IStateChanger stateChanger,
             IOptions<RabbitMQOptions> options,
@@ -19,21 +19,21 @@ namespace DotNetCore.CAP.RabbitMQ
             : base(stateChanger, logger)
         {
             _logger = logger;
-            _rabbitMqOptions = options.Value;
+            _rabbitMQOptions = options.Value;
         }
 
         public override Task<OperateResult> PublishAsync(string keyName, string content)
         {
             var factory = new ConnectionFactory()
             {
-                HostName = _rabbitMqOptions.HostName,
-                UserName = _rabbitMqOptions.UserName,
-                Port = _rabbitMqOptions.Port,
-                Password = _rabbitMqOptions.Password,
-                VirtualHost = _rabbitMqOptions.VirtualHost,
-                RequestedConnectionTimeout = _rabbitMqOptions.RequestedConnectionTimeout,
-                SocketReadTimeout = _rabbitMqOptions.SocketReadTimeout,
-                SocketWriteTimeout = _rabbitMqOptions.SocketWriteTimeout
+                HostName = _rabbitMQOptions.HostName,
+                UserName = _rabbitMQOptions.UserName,
+                Port = _rabbitMQOptions.Port,
+                Password = _rabbitMQOptions.Password,
+                VirtualHost = _rabbitMQOptions.VirtualHost,
+                RequestedConnectionTimeout = _rabbitMQOptions.RequestedConnectionTimeout,
+                SocketReadTimeout = _rabbitMQOptions.SocketReadTimeout,
+                SocketWriteTimeout = _rabbitMQOptions.SocketWriteTimeout
             };
 
             try
@@ -43,8 +43,8 @@ namespace DotNetCore.CAP.RabbitMQ
                 {
                     var body = Encoding.UTF8.GetBytes(content);
 
-                    channel.ExchangeDeclare(_rabbitMqOptions.TopicExchangeName, _rabbitMqOptions.EXCHANGE_TYPE);
-                    channel.BasicPublish(exchange: _rabbitMqOptions.TopicExchangeName,
+                    channel.ExchangeDeclare(_rabbitMQOptions.TopicExchangeName, RabbitMQOptions.ExchangeType);
+                    channel.BasicPublish(exchange: _rabbitMQOptions.TopicExchangeName,
                                          routingKey: keyName,
                                          basicProperties: null,
                                          body: body);

src/DotNetCore.CAP.RabbitMQ/RabbitMQConsumerClient.cs

@@ -46,7 +46,7 @@ namespace DotNetCore.CAP.RabbitMQ
 
             _connection = _connectionFactory.CreateConnection();
             _channel = _connection.CreateModel();
-            _channel.ExchangeDeclare(exchange: _exchageName, type: _rabbitMQOptions.EXCHANGE_TYPE);
+            _channel.ExchangeDeclare(exchange: _exchageName, type: _rabbitMQOptions.ExchangeType);
             _channel.QueueDeclare(_queueName, exclusive: false);
         }
 

src/DotNetCore.CAP/IQueueExecutor.Publish.Base.cs

@@ -13,7 +13,7 @@ namespace DotNetCore.CAP
         private readonly IStateChanger _stateChanger;
         private readonly ILogger _logger;
 
-        public BasePublishQueueExecutor(IStateChanger stateChanger,
+        protected BasePublishQueueExecutor(IStateChanger stateChanger,
             ILogger<BasePublishQueueExecutor> logger)
         {
             _stateChanger = stateChanger;

src/DotNetCore.CAP/IQueueExecutor.Subscibe.cs

@@ -116,7 +116,8 @@ namespace DotNetCore.CAP
             }
             catch (SubscriberNotFoundException ex)
             {
-                throw ex;
+                _logger.LogError("Can not be found subscribe method of name: " + receivedMessage.Name);
+                return OperateResult.Failed(ex);
             }
             catch (Exception ex)
             {

src/DotNetCore.CAP/QueueExecutorFactory.cs

@@ -17,16 +17,11 @@ namespace DotNetCore.CAP
 
         public IQueueExecutor GetInstance(MessageType messageType)
         {
-            var _queueExectors = _serviceProvider.GetServices<IQueueExecutor>();
+            var queueExectors = _serviceProvider.GetServices<IQueueExecutor>();
 
-            if (messageType == MessageType.Publish)
-            {
-                return _queueExectors.FirstOrDefault(x => typeof(BasePublishQueueExecutor).IsAssignableFrom(x.GetType()));
-            }
-            else
-            {
-                return _queueExectors.FirstOrDefault(x => !typeof(BasePublishQueueExecutor).IsAssignableFrom(x.GetType()));
-            }
+            return messageType == MessageType.Publish 
+                ? queueExectors.FirstOrDefault(x => x is BasePublishQueueExecutor) 
+                : queueExectors.FirstOrDefault(x => !(x is BasePublishQueueExecutor));
         }
     }
 }
\ No newline at end of file