001/*
002 * Copyright 2002-2017 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.messaging.tcp;
018
019/**
020 * A contract to determine the frequency of reconnect attempts after connection failure.
021 *
022 * @author Rossen Stoyanchev
023 * @since 4.0
024 */
025public interface ReconnectStrategy {
026
027        /**
028         * Return the time to the next attempt to reconnect.
029         * @param attemptCount how many reconnect attempts have been made already
030         * @return the amount of time in milliseconds or {@code null} to stop
031         */
032        Long getTimeToNextAttempt(int attemptCount);
033
034}