Add IMessageDispatcher interface

Author: daviwil

src/PowerShellEditorServices.Protocol/MessageProtocol/MessageDispatcher.cs

@@ -13,7 +13,7 @@
 
 namespace Microsoft.PowerShell.EditorServices.Protocol.MessageProtocol
 {
-    public class MessageDispatcher : IMessageHandlers
+    public class MessageDispatcher : IMessageHandlers, IMessageDispatcher
     {
         #region Fields
 

src/PowerShellEditorServices.Protocol/Server/IMessageDispatcher.cs

@@ -0,0 +1,17 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using System.Threading.Tasks;
+using Microsoft.PowerShell.EditorServices.Protocol.MessageProtocol;
+
+namespace Microsoft.PowerShell.EditorServices.Protocol
+{
+    public interface IMessageDispatcher
+    {
+        Task DispatchMessage(
+            Message messageToDispatch,
+            MessageWriter messageWriter);
+    }
+}

src/PowerShellEditorServices/Session/EditorSession.cs

@@ -5,6 +5,8 @@
 
 using Microsoft.PowerShell.EditorServices.Console;
 using Microsoft.PowerShell.EditorServices.Extensions;
+using Microsoft.PowerShell.EditorServices.Protocol;
+using Microsoft.PowerShell.EditorServices.Protocol.MessageProtocol;
 using Microsoft.PowerShell.EditorServices.Session;
 using Microsoft.PowerShell.EditorServices.Templates;
 using Microsoft.PowerShell.EditorServices.Utility;
@@ -77,12 +79,14 @@ public class EditorSession
         /// </summary>
         public bool UsesConsoleHost { get; private set; }
 
+        public IMessageDispatcher MessageDispatcher { get; private set; }
+
         #endregion
 
         #region Constructors
 
         /// <summary>
-        /// 
+        ///
         /// </summary>
         /// <param name="logger">An ILogger implementation used for writing log messages.</param>
         public EditorSession(ILogger logger)
@@ -109,6 +113,8 @@ public void StartSession(
             this.ConsoleService = consoleService;
             this.UsesConsoleHost = this.ConsoleService.EnableConsoleRepl;
 
+            // Initialize all services
+            this.MessageDispatcher = new MessageDispatcher(this.logger);
             this.LanguageService = new LanguageService(this.PowerShellContext, this.logger);
             this.ExtensionService = new ExtensionService(this.PowerShellContext);
             this.TemplateService = new TemplateService(this.PowerShellContext, this.logger);
@@ -137,6 +143,8 @@ public void StartDebugSession(
             this.PowerShellContext = powerShellContext;
             this.ConsoleService = consoleService;
 
+            // Initialize all services
+            this.MessageDispatcher = new MessageDispatcher(this.logger);
             this.RemoteFileManager = new RemoteFileManager(this.PowerShellContext, editorOperations, logger);
             this.DebugService = new DebugService(this.PowerShellContext, this.RemoteFileManager, logger);