Logging WRN when TrySetException/TrySetResult fails

Author: ramonsmits

src/ServiceControl.Audit/Auditing/AuditIngestor.cs

@@ -80,7 +80,10 @@ public async Task Ingest(List<MessageContext> contexts)
 
                 foreach (var context in contexts)
                 {
-                    context.GetTaskCompletionSource().TrySetResult(true);
+                    if (!context.GetTaskCompletionSource().TrySetResult(true))
+                    {
+                        Log.Warn("TrySetResult failed");
+                    }
                 }
             }
             catch (Exception e)

src/ServiceControl.Audit/Auditing/AuditPersister.cs

@@ -229,7 +229,10 @@ void ProcessSagaAuditMessage(MessageContext context)
                 }
 
                 // releasing the failed message context early so that they can be retried outside the current batch
-                context.GetTaskCompletionSource().TrySetException(e);
+                if (!context.GetTaskCompletionSource().TrySetException(e))
+                {
+                    Logger.Warn("ProcessSagaAuditMessage TrySetException failed");
+                }
             }
         }
 
@@ -297,7 +300,10 @@ await messageDispatcher.Value.Dispatch(new TransportOperations(messagesToEmit.To
                 }
 
                 // releasing the failed message context early so that they can be retried outside the current batch
-                context.GetTaskCompletionSource().TrySetException(e);
+                if (!context.GetTaskCompletionSource().TrySetException(e))
+                {
+                    Logger.Warn("ProcessAuditMessage TrySetException failed");
+                }
             }
         }