Added script validation

Author: Thomas Mahlberg

KustoSchemaTools/Changes/DatabaseChanges.cs

@@ -222,6 +222,13 @@ .. GenerateFollowerCachingChanges(oldState, newState, db => db.MaterializedViews
                 }
             }
 
+            foreach(var script in result.SelectMany(itm => itm.Scripts))
+            {
+                var code = KustoCode.Parse(script.Text);
+                var diagnostics = code.GetDiagnostics();
+                script.IsValid = diagnostics.Any() == false;
+            }
+
             return result;
 
         }

KustoSchemaTools/Parser/KustoWriter/DefaultDatabaseWriter.cs

@@ -21,7 +21,7 @@ public async Task WriteAsync(Database sourceDb, Database targetDb, KustoClient c
                 Console.WriteLine("---------------------------------------------------------------------------");
             }
 
-            foreach (var follower in targetDb.Followers)
+            foreach (var follower in sourceDb.Followers)
             {
                 var followerClient = new KustoClient(follower.Key);
                 var source = FollowerLoader.LoadFollower(follower.Value.DatabaseName, followerClient);