/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. * */ package org.apache.vysper.xmpp.delivery.failure; import java.util.List; import org.apache.vysper.xmpp.stanza.Stanza; /** * there are many reasons why a stanza may fail to deliver: remote server not answering, local addressee has * become unavailable, the server has no more resources to process etc. * what to do in this case also depends on the context. if the server intends to send out a presence notification, * an unavailable client might be ignored, but if a message stanza fails to deliver, the sender might wants to be * notified. * * @author The Apache MINA Project (dev@mina.apache.org) */ public interface DeliveryFailureStrategy { /** * * @param failedToDeliverStanza - stanza which could not be delivered * @param deliveryException - optional: exception which occured during the failed delivery * @throws org.apache.vysper.xmpp.delivery.failure.DeliveryException - exception which occured during failure strategy execution. */ public void process(Stanza failedToDeliverStanza, List<DeliveryException> deliveryException) throws DeliveryException; }