Merge pull request #3 from NiceOneFox/T3_Add_Buffer_Model

Close T3_Add_Buffer_Model

Author: NiceOneFox

backend/ServiceSimulation/Bll.Domain/Bll.Domain.csproj

@@ -8,7 +8,6 @@
 
   <ItemGroup>
     <Folder Include="Entities\" />
-    <Folder Include="Services\" />
     <Folder Include="Interfaces\" />
   </ItemGroup>
 

backend/ServiceSimulation/Bll.Domain/Entities/Buffer.cs

@@ -0,0 +1,24 @@
+using Bll.Domain.Factories;
+using Bll.Domain.Services;
+
+namespace Bll.Domain.Entities;
+
+public class Buffer : IBuffer
+{
+    private readonly IBufferManager _bufferManager; // FACTORY DESIGN PATTERN?
+
+    public Buffer(IBufferManagerFactory bufferManager)
+    {
+        _bufferManager = bufferManager.CreateBufferManager();
+    }
+
+    public void Push(Request request)
+    {
+        _bufferManager.Add(request);
+    }
+
+    public Request? Pop()
+    {
+        return _bufferManager.Get();
+    }
+}

backend/ServiceSimulation/Bll.Domain/Entities/BufferManagerFactory.cs

@@ -0,0 +1,12 @@
+using Bll.Domain.Factories;
+using Bll.Domain.Services;
+
+namespace Bll.Domain.Entities;
+
+public class BufferManagerFactory : IBufferManagerFactory
+{
+    public IBufferManager CreateBufferManager()
+    {
+        return new StandardBufferManager();
+    }
+}

backend/ServiceSimulation/Bll.Domain/Entities/StandardBufferManager.cs

@@ -0,0 +1,36 @@
+using Bll.Domain.Services;
+
+namespace Bll.Domain.Entities;
+
+public class StandardBufferManager : IBufferManager
+{
+    public readonly LinkedList<Request> requests = new();
+
+    public const int Capacity = 5;
+
+    public void Add(Request request)
+    {
+        if (requests.Count >= Capacity)
+        {
+            var removedRequest = requests.Last();
+            requests.RemoveLast();
+            // TODO ADD ALL DELETED REQUESTS TO SOME LOGS OR SOURCE. variable removedRequest
+        }
+
+        requests.AddFirst(request);
+    }
+
+    public Request? Get()
+    {
+        if (requests.Count == 0)
+        {
+            return null; // TODO THROW EXCEPTION?
+        }
+
+        var requestFromBuffer = requests.Last();
+        requests.RemoveLast();
+
+        return requestFromBuffer;
+    }
+
+}

backend/ServiceSimulation/Bll.Domain/Factories/IBufferManagerFactory.cs

@@ -0,0 +1,8 @@
+using Bll.Domain.Services;
+
+namespace Bll.Domain.Factories;
+
+public interface IBufferManagerFactory
+{
+    IBufferManager CreateBufferManager();
+}

backend/ServiceSimulation/Bll.Domain/Services/IBuffer.cs

@@ -0,0 +1,9 @@
+using Bll.Domain.Entities;
+
+namespace Bll.Domain.Services;
+
+public interface IBuffer
+{
+    void Push(Request request);
+    Request? Pop();
+}

backend/ServiceSimulation/Bll.Domain/Services/IBufferManager.cs

@@ -0,0 +1,9 @@
+using Bll.Domain.Entities;
+
+namespace Bll.Domain.Services;
+
+public interface IBufferManager
+{
+    void Add(Request request);
+    Request? Get();
+}

backend/ServiceSimulation/Bll.Domain/Services/ISource.cs

@@ -5,6 +5,4 @@ namespace Bll.Domain.Services;
 public interface ISource
 {
     Request GetNewRequest();
-
-
 }