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}