Address remaining comments for Object Management Database Handler (#2081)

src/Microsoft.SqlTools.ServiceLayer/Utility/DatabaseUtils.cs

@@ -19,7 +19,7 @@ using System.Security;
 
 namespace Microsoft.SqlTools.ServiceLayer.Utility
 {
-    public class DatabaseUtils
+    public static class DatabaseUtils
     {
         /// <summary>
         /// Check if the database is a system database
@@ -328,5 +328,22 @@ namespace Microsoft.SqlTools.ServiceLayer.Utility
                 return new string[0];
             }
         }
+
+        /// <summary>
+        /// Removes invalid characters from a filename string, replacing each invalid character with an underscore.
+        /// </summary>
+        public static string SanitizeDatabaseFileName(string fileName)
+        {
+            char[] nameChars = fileName.ToCharArray();
+            for (int i = 0; i < nameChars.Length; i++)
+            {
+                if (illegalFilenameCharacters.Contains(nameChars[i]))
+                {
+                    nameChars[i] = '_';
+                }
+            }
+            return new string(nameChars);
+        }
+        private static readonly HashSet<char> illegalFilenameCharacters = new HashSet<char>(new char[] { '\\', '/', ':', '*', '?', '"', '<', '>', '|' });
     }
 }

src/Microsoft.SqlTools.ServiceLayer/Utility/ServerUtils.cs

@@ -0,0 +1,28 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using Microsoft.SqlServer.Management.Common;
+using Microsoft.SqlServer.Management.Smo;
+
+namespace Microsoft.SqlTools.ServiceLayer.Utility
+{
+    public static class ServerUtils
+    {
+        public static bool IsManagedInstance(this Server server)
+        {
+            return server.Information?.DatabaseEngineEdition == DatabaseEngineEdition.SqlManagedInstance;
+        }
+
+        public static bool IsArcEnabledManagedInstance(this Server server)
+        {
+            return server.Information?.DatabaseEngineEdition == DatabaseEngineEdition.SqlAzureArcManagedInstance;
+        }
+
+        public static bool IsAnyManagedInstance(this Server server)
+        {
+            return (IsManagedInstance(server) || IsArcEnabledManagedInstance(server));
+        }
+    }
+}