Decorate proxies w/ ServiceProxy and use ServiceProxyRegistrationBehavior in ConsoleUi

Author: florinc

InterProcessCommunication/TradingApp/.Notes/PresentationScript.html

@@ -227,6 +227,41 @@ <h4 id="implement-proxies-to-call-the-services-as-a-rest-api">8. Implement proxi
 <li>--&gt; we need some prioritization for AppBoot (see next step)</li>
 </ul>
 </li>
+</ul>
+<h4 id="implement-servicepoxyattribute-and-serviceproxyregistrationbehavior">9. Implement <code>ServicePoxyAttribute</code> and <code>ServiceProxyRegistrationBehavior</code></h4>
+<ul>
+<li>Create the <code>AppBootEx</code> csproj</li>
+<li>Create <code>ServicePoxyAttribute</code> from scrach</li>
+<li>Create <code>ServiceProxyRegistrationBehavior</code>:</li>
+</ul>
+<pre><code class="language-csharp"> public sealed class ServiceProxyRegistrationBehavior : IRegistrationBehavior
+    {
+        public IEnumerable&lt;ServiceInfo&gt; GetServicesFrom(Type type)
+        {
+            IEnumerable&lt;ServiceProxyAttribute&gt; attributes = type.GetAttributes&lt;ServiceProxyAttribute&gt;(false);
+            return attributes.Select(a =&gt; new ServiceInfo(a.ExportType, type, string.Empty, Lifetime.AlwaysNew));
+        }
+    }
+</code></pre>
+<ul>
+<li>Add <code>ServiceProxyRegistrationBehavior</code> in the <code>Program.cs</code> at <code>AppBoot.Bootstrapp()</code>
+<ul>
+<li>the last added registration behavior, overwrites</li>
+</ul>
+</li>
+</ul>
+<p><strong>Points:</strong></p>
+<ul>
+<li>we have now the wanted behavior: <strong>Based on deployment we have <em>in-process</em> or <em>inter-process</em> communication</strong>
+<ul>
+<li>demo this with <code>ConsoleUi</code>
+<ul>
+<li>if implementations are deployed <strong>everythign</strong> is in one process</li>
+<li>if we delete the implementations from the <code>\bin\</code> then we have <em>inter-process</em> communication with the Console Host!</li>
+</ul>
+</li>
+</ul>
+</li>
 </ul>
 
     </div>

InterProcessCommunication/TradingApp/.Notes/PresentationScript.md

@@ -151,4 +151,30 @@ class QuotationService : IQuotationService
         -  but! the `PortfolioService` may get a proxy to call the `QuotationService` this result in a *inter-process* communitcation between `PortfolioSerivce` and `QuotationService`
       - ex2: 
         - `ConsoleUi` loads only proxies, the communication between `PortfolioSerivce` and `QuotationService` happens on the `ConsoleHost` only, in process!
-    - --> we need some prioritization for AppBoot (see next step)
+    - --> we need some prioritization for AppBoot (see next step)
+
+#### 9. Implement `ServicePoxyAttribute` and `ServiceProxyRegistrationBehavior`
+
+- Create the `AppBootEx` csproj 
+- Create `ServicePoxyAttribute` from scrach
+- Create `ServiceProxyRegistrationBehavior`:
+```csharp
+ public sealed class ServiceProxyRegistrationBehavior : IRegistrationBehavior
+    {
+        public IEnumerable<ServiceInfo> GetServicesFrom(Type type)
+        {
+            IEnumerable<ServiceProxyAttribute> attributes = type.GetAttributes<ServiceProxyAttribute>(false);
+            return attributes.Select(a => new ServiceInfo(a.ExportType, type, string.Empty, Lifetime.AlwaysNew));
+        }
+    }
+```
+
+- Add `ServiceProxyRegistrationBehavior` in the `Program.cs` at `AppBoot.Bootstrapp()`
+  - the last added registration behavior, overwrites
+
+
+**Points:**
+- we have now the wanted behavior: **Based on deployment we have *in-process* or *inter-process* communication**
+    - demo this with `ConsoleUi`
+      - if implementations are deployed **everythign** is in one process
+      - if we delete the implementations from the `\bin\` then we have *inter-process* communication with the Console Host!

InterProcessCommunication/TradingApp/ConsoleUi/Program.cs

@@ -5,6 +5,7 @@
 using System.Net.Sockets;
 using System.Reflection;
 using System.Web;
+using AppBootEx;
 using Contracts.Infrastructure;
 using Contracts.Portfolio.Services;
 using Contracts.Quotations.Services;
@@ -35,6 +36,7 @@ private static IServiceLocator Bootstrapp()
             var assemblies = GetApplicationAssemblies().ToArray();
             Bootstrapper bootstrapper = new Bootstrapper(assemblies);
             bootstrapper.ConfigureWithUnity();
+            bootstrapper.AddRegistrationBehavior(new ServiceProxyRegistrationBehavior());
             bootstrapper.AddRegistrationBehavior(new ServiceRegistrationBehavior());
 
             bootstrapper.Run();

InterProcessCommunication/TradingApp/Infrastructure/Proxies/OrdersServiceProxy.cs

@@ -1,12 +1,13 @@
 using System;
 using System.Net.Http;
 using System.Web;
+using AppBootEx;
 using Contracts.Sales.Services;
 using iQuarc.AppBoot;
 
 namespace Proxies
 {
-    [Service(typeof(IOrdersService))]
+    [ServiceProxy(typeof(IOrdersService))]
     class OrdersServiceProxy : IOrdersService
     {
         public void PlaceSellLimitOrder(string securityCode, decimal sellingPrice, DateTime validUntil)

InterProcessCommunication/TradingApp/Infrastructure/Proxies/PortfolioServiceProxy.cs

@@ -1,12 +1,11 @@
 using System.Net.Http;
 using System.Web;
+using AppBootEx;
 using Contracts.Portfolio.Services;
-using Contracts.Quotations.Services;
-using iQuarc.AppBoot;
 
 namespace Proxies
 {
-    [Service(typeof(IPortfolioService))]
+    [ServiceProxy(typeof(IPortfolioService))]
     class PortfolioServiceProxy : IPortfolioService
     {
         public decimal GetPortfolioValue()

InterProcessCommunication/TradingApp/Infrastructure/Proxies/QuotationServiceProxy.cs

@@ -1,13 +1,14 @@
 using System;
 using System.Net.Http;
 using System.Web;
+using AppBootEx;
 using Contracts.Portfolio.Services;
 using Contracts.Quotations.Services;
 using iQuarc.AppBoot;
 
 namespace Proxies
 {
-    [Service(typeof(IQuotationService))]
+    [ServiceProxy(typeof(IQuotationService))]
     class QuotationServiceProxy : IQuotationService
     {
         public Quotation[] GetQuotations(string exchange, string instrument, DateTime @from, DateTime to)