/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.tasks;
/**
* Listener for Task success or failure.
*/
public interface TaskListener<Response> {
/**
* Handle task response. This response may constitute a failure or a success
* but it is up to the listener to make that decision.
*
* @param task
* the task being executed. May be null if the action doesn't
* create a task
* @param response
* the response from the action that executed the task
*/
void onResponse(Task task, Response response);
/**
* A failure caused by an exception at some phase of the task.
*
* @param task
* the task being executed. May be null if the action doesn't
* create a task
* @param e
* the failure
*/
void onFailure(Task task, Throwable e);
}