Added concept for ILogger

Moved some code about

Connection/TapetiWorker.cs

@@ -9,11 +9,7 @@ namespace Tapeti.Connection
 {
     public class TapetiWorker
     {
-        public string HostName { get; set; }
-        public int Port { get; set; }
-        public string VirtualHost { get; set; }
-        public string Username { get; set; }
-        public string Password { get; set; }
+        public TapetiConnectionParams ConnectionParams { get; set; }
         public string PublishExchange { get; set; }
 
 
@@ -124,11 +120,11 @@ namespace Tapeti.Connection
 
             var connectionFactory = new ConnectionFactory
             {
-                HostName = HostName,
-                Port = Port,
-                VirtualHost = VirtualHost,
-                UserName = Username,
-                Password = Password,
+                HostName = ConnectionParams.HostName,
+                Port = ConnectionParams.Port,
+                VirtualHost = ConnectionParams.VirtualHost,
+                UserName = ConnectionParams.Username,
+                Password = ConnectionParams.Password,
                 AutomaticRecoveryEnabled = true,
                 RequestedHeartbeat = 30
             };

Default/ConsoleLogger.cs

@@ -0,0 +1,20 @@
+namespace Tapeti.Default
+{
+    public class ConsoleLogger : ILogger
+    {
+        public void Connect(TapetiConnectionParams connectionParams)
+        {
+            throw new System.NotImplementedException();
+        }
+
+        public void ConnectFailed(TapetiConnectionParams connectionParams)
+        {
+            throw new System.NotImplementedException();
+        }
+
+        public void ConnectSuccess(TapetiConnectionParams connectionParams)
+        {
+            throw new System.NotImplementedException();
+        }
+    }
+}

Default/DefaultDependencyResolver.cs

@@ -14,12 +14,29 @@ namespace Tapeti.Default
         private readonly Lazy<DefaultControllerFactory> controllerFactory;
         private readonly Lazy<DefaultRoutingKeyStrategy> routingKeyStrategy = new Lazy<DefaultRoutingKeyStrategy>();
         private readonly Lazy<DefaultMessageSerializer> messageSerializer = new Lazy<DefaultMessageSerializer>();
+        private readonly Lazy<ILogger> logger;
 
 
 
         public DefaultDependencyResolver(Func<IPublisher> publisherFactory)
         {
             controllerFactory = new Lazy<DefaultControllerFactory>(() => new DefaultControllerFactory(publisherFactory));
+
+            logger = new Lazy<ILogger>(() =>
+            {
+                // http://stackoverflow.com/questions/6408588/how-to-tell-if-there-is-a-console
+                try
+                {
+                    // ReSharper disable once UnusedVariable
+                    var dummy = Console.WindowHeight;
+
+                    return new ConsoleLogger();
+                }
+                catch
+                {
+                    return new DevNullLogger();
+                }
+            });
         }
 
 
@@ -34,6 +51,9 @@ namespace Tapeti.Default
             if (typeof(T) == typeof(IMessageSerializer))
                 return (T)(messageSerializer.Value as IMessageSerializer);
 
+            if (typeof(T) == typeof(ILogger))
+                return (T)logger.Value;
+
             return default(T);
         }
 

Default/DevNullLogger.cs

@@ -0,0 +1,17 @@
+namespace Tapeti.Default
+{
+    public class DevNullLogger : ILogger
+    {
+        public void Connect(TapetiConnectionParams connectionParams)
+        {
+        }
+
+        public void ConnectFailed(TapetiConnectionParams connectionParams)
+        {
+        }
+
+        public void ConnectSuccess(TapetiConnectionParams connectionParams)
+        {
+        }
+    }
+}

ILogger.cs

@@ -0,0 +1,11 @@
+namespace Tapeti
+{
+    // This interface is deliberately specific and typed to allow for structured logging (e.g. Serilog)
+    // instead of only string-based logging without control over the output.
+    public interface ILogger
+    {
+        void Connect(TapetiConnectionParams connectionParams);
+        void ConnectFailed(TapetiConnectionParams connectionParams);
+        void ConnectSuccess(TapetiConnectionParams connectionParams);
+    }
+}

Tapeti.csproj

@@ -55,6 +55,11 @@
     <Compile Include="Connection\TapetiPublisher.cs" />
     <Compile Include="Connection\TapetiSubscriber.cs" />
     <Compile Include="Connection\TapetiWorker.cs" />
+    <Compile Include="Default\ConsoleLogger.cs" />
+    <Compile Include="Default\DevNullLogger.cs" />
+    <Compile Include="ILogger.cs" />
+    <Compile Include="TapetiConnectionExtensions.cs" />
+    <Compile Include="TapetiConnectionParams.cs" />
     <Compile Include="TapetiTypes.cs" />
     <Compile Include="Tasks\SingleThreadTaskQueue.cs" />
     <Compile Include="Default\DefaultControllerFactory.cs" />

TapetiConnection.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using System.Reflection;
 using System.Threading.Tasks;
 using Tapeti.Annotations;
@@ -12,11 +11,8 @@ namespace Tapeti
 {
     public class TapetiConnection : IDisposable
     {
-        public string HostName { get; set; } = "localhost";
-        public int Port { get; set; } = 5672;
-        public string VirtualHost { get; set; } = "/";
-        public string Username { get; set; } = "guest";
-        public string Password { get; set; } = "guest";
+        public TapetiConnectionParams Params { get; set; }
+
         public string PublishExchange { get; set; } = "";
         public string SubscribeExchange { get; set; } = "";
 
@@ -29,10 +25,21 @@ namespace Tapeti
 
 
         private IDependencyResolver dependencyResolver;
-        private List<IQueueRegistration> registrations;
-        private TapetiWorker worker;
+        private readonly Lazy<List<IQueueRegistration>> registrations = new Lazy<List<IQueueRegistration>>();
+        private readonly Lazy<TapetiWorker> worker;
 
 
+        public TapetiConnection()
+        {
+            worker = new Lazy<TapetiWorker>(() => new TapetiWorker(
+                DependencyResolver.Resolve<IMessageSerializer>(),
+                DependencyResolver.Resolve<IRoutingKeyStrategy>())
+            {
+                ConnectionParams = Params ?? new TapetiConnectionParams(),
+                PublishExchange = PublishExchange
+            });
+        }
+
 
         public TapetiConnection WithDependencyResolver(IDependencyResolver resolver)
         {
@@ -52,7 +59,7 @@ namespace Tapeti
                 if (!string.IsNullOrEmpty(queueAttribute.Name))
                     throw new ArgumentException("Dynamic queue attributes must not have a Name");
 
-                GetRegistrations().Add(new ControllerDynamicQueueRegistration(
+                registrations.Value.Add(new ControllerDynamicQueueRegistration(
                     DependencyResolver.Resolve<IControllerFactory>,
                     DependencyResolver.Resolve<IRoutingKeyStrategy>,
                     type, SubscribeExchange));
@@ -62,7 +69,7 @@ namespace Tapeti
                 if (string.IsNullOrEmpty(queueAttribute.Name))
                     throw new ArgumentException("Non-dynamic queue attribute must have a Name");
 
-                GetRegistrations().Add(new ControllerQueueRegistration(
+                registrations.Value.Add(new ControllerQueueRegistration(
                     DependencyResolver.Resolve<IControllerFactory>,
                     type, SubscribeExchange, queueAttribute.Name));
             }
@@ -72,28 +79,13 @@ namespace Tapeti
         }
 
 
-        public TapetiConnection RegisterAllControllers(Assembly assembly)
-        {
-            foreach (var type in assembly.GetTypes().Where(t => t.IsDefined(typeof(QueueAttribute))))
-                RegisterController(type);
-
-            return this;
-        }
-
-
-        public TapetiConnection RegisterAllControllers()
-        {
-            return RegisterAllControllers(Assembly.GetCallingAssembly());
-        }
-
-
         public async Task<ISubscriber> Subscribe()
         {
-            if (registrations == null || registrations.Count == 0)
+            if (!registrations.IsValueCreated || registrations.Value.Count == 0)
                 throw new ArgumentException("No controllers registered");
 
-            var subscriber = new TapetiSubscriber(GetWorker());
-            await subscriber.BindQueues(registrations);
+            var subscriber = new TapetiSubscriber(worker.Value);
+            await subscriber.BindQueues(registrations.Value);
 
             return subscriber;
         }
@@ -101,17 +93,14 @@ namespace Tapeti
 
         public IPublisher GetPublisher()
         {
-            return new TapetiPublisher(GetWorker());
+            return new TapetiPublisher(worker.Value);
         }
 
 
         public async Task Close()
         {
-            if (worker != null)
-            {
-                await worker.Close();
-                worker = null;
-            }
+            if (worker.IsValueCreated)
+                await worker.Value.Close();
         }
 
 
@@ -119,27 +108,5 @@ namespace Tapeti
         {
             Close().Wait();
         }
-
-
-        protected List<IQueueRegistration> GetRegistrations()
-        {
-            return registrations ?? (registrations = new List<IQueueRegistration>());
-        }
-
-
-        protected TapetiWorker GetWorker()
-        {
-            return worker ?? (worker = new TapetiWorker(
-                DependencyResolver.Resolve<IMessageSerializer>(),
-                DependencyResolver.Resolve<IRoutingKeyStrategy>())
-                   {
-                       HostName = HostName,
-                       Port = Port,
-                       VirtualHost = VirtualHost,
-                       Username = Username,
-                       Password = Password,
-                       PublishExchange = PublishExchange
-                   });
-        }
     }
 }

TapetiConnectionExtensions.cs

@@ -0,0 +1,23 @@
+using System.Linq;
+using System.Reflection;
+using Tapeti.Annotations;
+
+namespace Tapeti
+{
+    public static class TapetiConnectionExtensions
+    {
+        public static TapetiConnection RegisterAllControllers(this TapetiConnection connection, Assembly assembly)
+        {
+            foreach (var type in assembly.GetTypes().Where(t => t.IsDefined(typeof(QueueAttribute))))
+                connection.RegisterController(type);
+
+            return connection;
+        }
+
+
+        public static TapetiConnection RegisterAllControllers(this TapetiConnection connection)
+        {
+            return RegisterAllControllers(connection, Assembly.GetCallingAssembly());
+        }
+    }
+}

TapetiConnectionParams.cs

@@ -0,0 +1,35 @@
+using System;
+
+namespace Tapeti
+{
+    public class TapetiConnectionParams
+    {
+        public string HostName { get; set; } = "localhost";
+        public int Port { get; set; } = 5672;
+        public string VirtualHost { get; set; } = "/";
+        public string Username { get; set; } = "guest";
+        public string Password { get; set; } = "guest";
+
+
+        public TapetiConnectionParams()
+        {            
+        }
+
+        public TapetiConnectionParams(Uri uri)
+        {
+            HostName = uri.Host;
+            VirtualHost = string.IsNullOrEmpty(uri.AbsolutePath) ? "/" : uri.AbsolutePath;
+
+            if (!uri.IsDefaultPort)
+                Port = uri.Port;
+
+            var userInfo = uri.UserInfo.Split(':');
+            if (userInfo.Length > 0)
+            {
+                Username = userInfo[0];
+                if (userInfo.Length > 1)
+                    Password = userInfo[1];
+            }
+        }
+    }
+}

Test/Program.cs

@@ -31,7 +31,7 @@ namespace Test
                 while(true)
                     publisher.Publish(new MarcoMessage()).Wait();
 
-                Console.ReadLine();
+                //Console.ReadLine();
             }
         }
     }