Revert "Scripting should await result of requestcontext.sendresult in case it errors" (#526)

* Revert "Add rowcount check so that no results error is sent for a query where no rows are returned (#525)"

This reverts commit 3392f93a2e.

* Revert "Add unknown status for DB Nodes whose status is not known (#524)"

This reverts commit 3d7b87eca2.

* Revert "Should await result of requestcontext.sendresult in case it errors (#520)"

This reverts commit caf196ea31.

src/Microsoft.SqlTools.ServiceLayer/Localization/sr.cs

@@ -2405,14 +2405,6 @@ namespace Microsoft.SqlTools.ServiceLayer
             }
         }
 
-        public static string ScriptingUnexpectedError
-        {
-            get
-            {
-                return Keys.GetString(Keys.ScriptingUnexpectedError);
-            }
-        }
-
         public static string unavailable
         {
             get
@@ -4608,9 +4600,6 @@ namespace Microsoft.SqlTools.ServiceLayer
             public const string ScriptingListObjectsCompleteParams_ConnectionString_Property_Invalid = "ScriptingListObjectsCompleteParams_ConnectionString_Property_Invalid";
 
 
-            public const string ScriptingUnexpectedError = "ScriptingUnexpectedError";
-
-
             public const string unavailable = "unavailable";
 
 

src/Microsoft.SqlTools.ServiceLayer/Localization/sr.resx

@@ -1380,10 +1380,6 @@
     <value>Error parsing ScriptingListObjectsCompleteParams.ConnectionString property.</value>
     <comment></comment>
   </data>
-  <data name="ScriptingUnexpectedError" xml:space="preserve">
-    <value>Unexpected error while scripting: no result returned from script operation.</value>
-    <comment></comment>
-  </data>
   <data name="unavailable" xml:space="preserve">
     <value>Unavailable</value>
     <comment></comment>

src/Microsoft.SqlTools.ServiceLayer/Localization/sr.strings

@@ -690,8 +690,6 @@ ScriptingParams_FilePath_Property_Invalid = Invalid directory specified by the S
 
 ScriptingListObjectsCompleteParams_ConnectionString_Property_Invalid = Error parsing ScriptingListObjectsCompleteParams.ConnectionString property.
 
-ScriptingUnexpectedError = Unexpected error while scripting: no result returned from script operation.
-
 
 
 

src/Microsoft.SqlTools.ServiceLayer/Localization/sr.xlf

@@ -2311,11 +2311,6 @@
         <note>.
  Parameters: 0 - value (string), 1 - columnType (string) </note>
       </trans-unit>
-      <trans-unit id="ScriptingUnexpectedError">
-        <source>Unexpected error while scripting: no result returned from script operation.</source>
-        <target state="new">Unexpected error while scripting: no result returned from script operation.</target>
-        <note></note>
-      </trans-unit>
     </body>
   </file>
 </xliff>

src/Microsoft.SqlTools.ServiceLayer/Scripting/ScriptingException.cs

@@ -1,28 +0,0 @@
-//
-// Copyright (c) Microsoft. All rights reserved.
-// Licensed under the MIT license. See LICENSE file in the project root for full license information.
-//
-
-using System;
-
-namespace Microsoft.SqlTools.ServiceLayer.Scripting
-{
-    public class ScriptingException : Exception
-    {
-        public ScriptingException()
-            : base()
-        {
-        }
-
-        public ScriptingException(string message, Exception exception)
-            : base(message, exception)
-        {
-        }
-
-
-        public ScriptingException(string message)
-            : base(message)
-        {
-        }
-    }
-}

src/Microsoft.SqlTools.ServiceLayer/Scripting/ScriptingService.cs

@@ -23,7 +23,6 @@ using Microsoft.SqlServer.Management.Smo;
 using Microsoft.SqlServer.Management.Common;
 using Microsoft.SqlServer.Management.Sdk.Sfc;
 using Microsoft.SqlTools.ServiceLayer.Utility;
-using Microsoft.SqlTools.ServiceLayer.LanguageServices;
 
 namespace Microsoft.SqlTools.ServiceLayer.Scripting
 {
@@ -229,49 +228,15 @@ namespace Microsoft.SqlTools.ServiceLayer.Scripting
         /// </summary>
         private void RunSelectTask(ConnectionInfo connInfo, ScriptingParams parameters, RequestContext<ScriptingResult> requestContext)
         {            
-            Task.Run(() =>
+            ConnectionServiceInstance.ConnectionQueue.QueueBindingOperation(
-            {
-                try
-                {
-                    QueueItem queueItem = ConnectionServiceInstance.ConnectionQueue.QueueBindingOperation(
                 key: ConnectionServiceInstance.ConnectionQueue.AddConnectionContext(connInfo, "Scripting"),
                 bindingTimeout: ScriptingOperationTimeout,
                 bindOperation: (bindingContext, cancelToken) =>
-                        {
-                            return DoScriptSelect(connInfo, parameters, bindingContext);
-                        });
-                        
-                    queueItem.ItemProcessed.WaitOne();
-                    var result = queueItem.GetResultAsT<ScriptingResultWithException>();
-                    if (result == null)
-                    {
-                        result = new ScriptingResultWithException()
-                        { 
-                            Exception = new ScriptingException(SR.ScriptingUnexpectedError)
-                        };
-                    }
-                    if (result.Exception == null)
-                    {
-                        requestContext.SendResult(result).Wait();
-                    }
-                    else
-                    {
-                        requestContext.SendError(result.Exception);
-                    }
-                }
-                catch (Exception e)
-                {
-                    requestContext.SendError(e);
-                }
-            }).ContinueWithOnFaulted(null);
-        }
-
-        private ScriptingResult DoScriptSelect(ConnectionInfo connInfo, ScriptingParams parameters, IBindingContext bindingContext)
-        {
-            try
                 {
                     string script = string.Empty;
                     ScriptingObject scriptingObject = parameters.ScriptingObjects[0];
+                    try
+                    {
                         Server server = new Server(bindingContext.ServerConnection);
                         server.DefaultTextMode = true;
 
@@ -302,12 +267,15 @@ namespace Microsoft.SqlTools.ServiceLayer.Scripting
                         }
 
                         // send script result to client
-                return new ScriptingResult { Script = script };                          
+                        requestContext.SendResult(new ScriptingResult { Script = script });                          
                     }
                     catch (Exception e)
                     {
-                return new ScriptingResultWithException() { Exception = e};
+                        requestContext.SendError(e);
                     }
+
+                    return null;
+                });
         }
 
         /// <summary>
@@ -349,10 +317,5 @@ namespace Microsoft.SqlTools.ServiceLayer.Scripting
                 }
             }
         }
-
-        internal class ScriptingResultWithException : ScriptingResult
-        {
-            public Exception Exception { get; set; }
-        }
     }
 }