From 19b7a180b5fa60508945d207fc7a86f820f01d2d Mon Sep 17 00:00:00 2001
From: Hai Cao <hacao@microsoft.com>
Date: Wed, 8 Mar 2023 14:27:08 -0800
Subject: [PATCH] Expose inner exceptions when sendError (#1919)

* send inner exception

* trim

* name

* format
---
 .../Hosting/Protocol/MessageDispatcher.cs      | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/Microsoft.SqlTools.Hosting/Hosting/Protocol/MessageDispatcher.cs b/src/Microsoft.SqlTools.Hosting/Hosting/Protocol/MessageDispatcher.cs
index 0c1d3530..f5231839 100644
--- a/src/Microsoft.SqlTools.Hosting/Hosting/Protocol/MessageDispatcher.cs
+++ b/src/Microsoft.SqlTools.Hosting/Hosting/Protocol/MessageDispatcher.cs
@@ -159,12 +159,26 @@ namespace Microsoft.SqlTools.Hosting.Protocol
                     }
                     catch (Exception ex)
                     {
-                        Logger.Error($"{requestType.MethodName} : {ex}");
-                        await requestContext.SendError(ex.Message);
+                        string errorMessage = GetErrorMessage(ex);
+                        Logger.Error($"{requestType.MethodName} : {errorMessage}");
+                        await requestContext.SendError(errorMessage);
                     }
                 });
         }
 
+        private string GetErrorMessage(Exception e)
+        {
+            List<string> errors = new List<string>();
+
+            while (e != null)
+            {
+                errors.Add(e.Message);
+                e = e.InnerException;
+            }
+
+            return errors.Count > 0 ? string.Join(" ---> ", errors) : string.Empty;
+        }
+
          public void SetEventHandler<TParams>(
             EventType<TParams> eventType,
             Func<TParams, EventContext, Task> eventHandler)