001package com.github.theholywaffle.teamspeak3.api.reconnect; 002 003/* 004 * #%L 005 * TeamSpeak 3 Java API 006 * %% 007 * Copyright (C) 2015 Bert De Geyter 008 * %% 009 * Permission is hereby granted, free of charge, to any person obtaining a copy 010 * of this software and associated documentation files (the "Software"), to deal 011 * in the Software without restriction, including without limitation the rights 012 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 013 * copies of the Software, and to permit persons to whom the Software is 014 * furnished to do so, subject to the following conditions: 015 * 016 * The above copyright notice and this permission notice shall be included in 017 * all copies or substantial portions of the Software. 018 * 019 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 020 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 021 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 022 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 023 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 024 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 025 * THE SOFTWARE. 026 * #L% 027 */ 028 029import com.github.theholywaffle.teamspeak3.TS3Query; 030import com.github.theholywaffle.teamspeak3.api.exception.TS3ConnectionFailedException; 031 032public class ReconnectingConnectionHandler implements ConnectionHandler { 033 034 private final ConnectionHandler userConnectionHandler; 035 private final int startTimeout; 036 private final int timeoutCap; 037 private final int addend; 038 private final double multiplier; 039 040 private int timeout = -1; 041 042 public ReconnectingConnectionHandler(ConnectionHandler userConnectionHandler, int startTimeout, 043 int timeoutCap, int addend, double multiplier) { 044 this.userConnectionHandler = userConnectionHandler; 045 this.startTimeout = startTimeout; 046 this.timeoutCap = timeoutCap; 047 this.addend = addend; 048 this.multiplier = multiplier; 049 } 050 051 @Override 052 public void onConnect(TS3Query ts3Query) { 053 timeout = startTimeout; 054 if (userConnectionHandler != null) { 055 userConnectionHandler.onConnect(ts3Query); 056 } 057 } 058 059 @Override 060 public void onDisconnect(TS3Query ts3Query) { 061 if (timeout < 0) { 062 // Special case: We never connected 063 // --> Something is probably not set up correctly 064 // Do not attempt to reconnect 065 return; 066 } else if (timeout == startTimeout) { 067 // First run, announce disconnect 068 TS3Query.log.info("[Connection] Disconnected from TS3 server"); 069 070 if (userConnectionHandler != null) { 071 userConnectionHandler.onDisconnect(ts3Query); 072 } 073 } 074 075 timeout = (int) Math.ceil(timeout * multiplier) + addend; 076 if (timeoutCap > 0) timeout = Math.min(timeout, timeoutCap); 077 078 try { 079 Thread.sleep(timeout); 080 } catch (InterruptedException e) { 081 return; 082 } 083 084 try { 085 ts3Query.connect(); 086 } catch (TS3ConnectionFailedException conFailed) { 087 // Ignore exception, announce reconnect failure 088 TS3Query.log.fine("[Connection] Failed to reconnect - waiting " + timeout + "ms until next attempt"); 089 } 090 } 091}