From 3f1d3cb9db9b3a419e721dd80025a32199be28a0 Mon Sep 17 00:00:00 2001
From: Leila Lali <llali@microsoft.com>
Date: Mon, 22 Aug 2016 15:08:44 -0700
Subject: [PATCH] Added a new request handler to return back the service
 version

---
 .../Hosting/Contracts/VersionRequest.cs          | 16 ++++++++++++++++
 .../Hosting/ServiceHost.cs                       | 12 ++++++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 src/Microsoft.SqlTools.ServiceLayer/Hosting/Contracts/VersionRequest.cs

diff --git a/src/Microsoft.SqlTools.ServiceLayer/Hosting/Contracts/VersionRequest.cs b/src/Microsoft.SqlTools.ServiceLayer/Hosting/Contracts/VersionRequest.cs
new file mode 100644
index 00000000..96a1808c
--- /dev/null
+++ b/src/Microsoft.SqlTools.ServiceLayer/Hosting/Contracts/VersionRequest.cs
@@ -0,0 +1,16 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using Microsoft.SqlTools.ServiceLayer.Hosting.Protocol.Contracts;
+
+namespace Microsoft.SqlTools.ServiceLayer.Hosting.Contracts
+{
+    public class VersionRequest
+    {
+        public static readonly
+           RequestType<string, string> Type =
+           RequestType<string, string>.Create("version");
+    }
+}
diff --git a/src/Microsoft.SqlTools.ServiceLayer/Hosting/ServiceHost.cs b/src/Microsoft.SqlTools.ServiceLayer/Hosting/ServiceHost.cs
index 0f2a0d9a..46fc1db5 100644
--- a/src/Microsoft.SqlTools.ServiceLayer/Hosting/ServiceHost.cs
+++ b/src/Microsoft.SqlTools.ServiceLayer/Hosting/ServiceHost.cs
@@ -11,6 +11,7 @@ using Microsoft.SqlTools.EditorServices.Utility;
 using Microsoft.SqlTools.ServiceLayer.Hosting.Contracts;
 using Microsoft.SqlTools.ServiceLayer.Hosting.Protocol;
 using Microsoft.SqlTools.ServiceLayer.Hosting.Protocol.Channel;
+using System.Reflection;
 
 namespace Microsoft.SqlTools.ServiceLayer.Hosting
 {
@@ -55,6 +56,7 @@ namespace Microsoft.SqlTools.ServiceLayer.Hosting
             // Register the requests that this service host will handle
             this.SetRequestHandler(InitializeRequest.Type, this.HandleInitializeRequest);
             this.SetRequestHandler(ShutdownRequest.Type, this.HandleShutdownRequest);
+            this.SetRequestHandler(VersionRequest.Type, HandleVersionRequest);
         }
 
         #endregion
@@ -69,6 +71,8 @@ namespace Microsoft.SqlTools.ServiceLayer.Hosting
 
         private readonly List<InitializeCallback> initializeCallbacks;
 
+        private static Version _serviceServion = Assembly.GetEntryAssembly().GetName().Version;
+
         #endregion
 
         #region Public Methods
@@ -149,6 +153,14 @@ namespace Microsoft.SqlTools.ServiceLayer.Hosting
                 });
         }
 
+        private static async Task HandleVersionRequest(
+          string workspaceSymbolParams,
+          RequestContext<string> requestContext)
+        {
+            Logger.Write(LogLevel.Verbose, "HandleVersionRequest");
+            await requestContext.SendResult(_serviceServion.ToString());
+        }
+
         #endregion
     }
 }