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390
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1 package rep;
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2
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3 import java.io.IOException;
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4 import java.net.InetSocketAddress;
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5 import java.net.SocketException;
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6 import java.nio.channels.ClosedChannelException;
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7 import java.nio.channels.SelectionKey;
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8 import java.util.LinkedList;
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9 import java.util.Set;
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10 import java.util.concurrent.BlockingQueue;
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11 import java.util.concurrent.LinkedBlockingQueue;
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12
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13 import rep.channel.REPLogger;
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14 import rep.channel.REPSelectionKey;
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15 import rep.channel.REPSelector;
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16 import rep.channel.REPServerSocketChannel;
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17 import rep.channel.REPSocketChannel;
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18 import rep.gui.DoGUIUpdate;
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19 import rep.gui.SessionManagerEvent;
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20 import rep.gui.SessionManagerGUI;
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21 import rep.handler.FirstConnector;
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22 import rep.handler.REPNode;
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23
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24 public class ServerMainLoop {
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25
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26 public static REPLogger logger = REPLogger.singleton();
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27 public SessionManager manager;
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28 protected SessionManagerGUI gui;
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29 protected REPSelector<REPCommand> selector;
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30 private BlockingQueue<SessionManagerEvent> waitingEventQueue
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31 = new LinkedBlockingQueue<SessionManagerEvent>();
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32 public String myHost;
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33 private LinkedList<PacketSet> writeQueue = new LinkedList<PacketSet>();
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34 protected int receive_port;
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35 protected int parent_port;
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36 protected static final int DEFAULT_PORT = 8766;
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37 private SessionManagerEvent execAfterConnect = null;
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38
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39
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40 public void setReceivePort(int port) {
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41 receive_port = port;
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42 }
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43
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44 void mainLoop(SessionManager sessionManager, int port, SessionManagerGUI gui) throws IOException,
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45 SocketException, ClosedChannelException {
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46 this.gui = gui;
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47 manager = sessionManager;
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48 receive_port = port;
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49 serverInit();
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50 mainLoop();
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51 }
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52
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53 public void mainLoop() throws IOException {
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54 while(true){
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399
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55 manager.checkWaitingCommandInMerge();
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390
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56 if (checkInputEvent() ||
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57 checkWaitingWrite()) {
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58 // try to do fair execution for waiting task
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59 if(selector.selectNow() > 0) select();
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60 continue;
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61 }
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62 // now we can wait for input packet or event
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63 selector.select();
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64 select();
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65 }
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66 }
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67
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68 void serverInit() throws IOException, SocketException,
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69 ClosedChannelException {
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70 selector = REPSelector.<REPCommand>create();
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71 REPServerSocketChannel<REPCommand> ssc = REPServerSocketChannel.<REPCommand>open(new REPCommandPacker());
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72 ssc.configureBlocking(false); // Selector requires this
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73 ssc.socket().setReuseAddress(true); //reuse address 必須
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74 //getAllByNameで取れた全てのアドレスに対してbindする
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75 try {
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76 ssc.socket().bind(new InetSocketAddress("::",receive_port));
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77 } catch (SocketException e) {
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391
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78 // for some IPv6 implementation
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390
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79 ssc.socket().bind(new InetSocketAddress(receive_port));
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80 }
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81 ssc.register(selector, SelectionKey.OP_ACCEPT,null);
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82 }
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83
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84 private boolean checkInputEvent() {
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85 SessionManagerEvent e;
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86 if((e = waitingEventQueue.poll())!=null){
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87 e.exec(manager);
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88 return true;
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89 }
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90 return false;
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91 }
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92
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93 private boolean checkWaitingWrite() throws IOException {
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94 PacketSet p = writeQueue.poll();
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95 if (p!=null) {
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391
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96 logger.writeLog("writing: "+p.command+" to: "
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97 +manager.editorList.editorByChannel(p.channel));
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390
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98 p.channel.write(p.command);
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99 return true;
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100 }
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101 return false;
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102 }
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103
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104
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399
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105 public void close(REPSocketChannel<REPCommand> channel) {
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390
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106 REPSelectionKey<REPCommand>key = channel.keyFor1(selector);
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107 REPNode handler = (REPNode)key.attachment();
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108 key.cancel();
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109 handler.cancel(channel);
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110 // we have to remove session/editor
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111 }
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112
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113 private void select() throws IOException {
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114
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115 Set<REPSelectionKey<REPCommand>> keys = selector.selectedKeys1();
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116 for(REPSelectionKey<REPCommand> key : keys){
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117 if(key.isAcceptable()){
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118 /*
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119 * Incoming connection. We don't know which, editor or
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120 * session manager. Assign FirstConnector to distinguish.
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121 */
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122 REPSocketChannel<REPCommand> channel = key.accept(new REPCommandPacker());
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123 logger.writeLog("SessionManager.select() : key.isAcceptable : channel = " + channel);
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124 registerChannel(channel, new FirstConnector(manager,channel));
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125 } else if(key.isReadable()){
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126 /*
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127 * Incoming packets are handled by a various forwarder.
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128 * A handler throw IOException() in case of a trouble to
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129 * close the channel.
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130 */
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131 REPNode handler = (REPNode)key.attachment();
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132 try {
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133 REPCommand command = key.channel1().read();
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134 handler.handle(command, key);
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135 } catch (IOException e) {
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136 key.cancel();
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137 handler.cancel(key.channel1());
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138 }
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139 }
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140 }
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141 }
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142
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143 public void registerChannel(REPSocketChannel<REPCommand> channel, REPNode handler) throws IOException {
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144 if(channel == null) {
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145 return;
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146 }
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147 // handler.setChannel(channel);
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148 channel.configureBlocking(false);
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149 channel.register(selector, SelectionKey.OP_READ, handler);
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150 }
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151
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152 protected void updateGUI() {
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153 //リストのコピーをGUIに渡す
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154 LinkedList<Session> sList = new LinkedList<Session>(manager.sessionList.values());
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155 LinkedList<REPNode> eList;
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156 if (false) {
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157 // local editor only
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158 eList = new LinkedList<REPNode>();
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159 for(REPNode e:manager.editorList.values()) {
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160 if (manager.getSMID(e.eid)==manager.smList.sessionManagerID()) {
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161 eList.add(e);
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162 }
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163 }
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164 } else {
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165 eList = new LinkedList<REPNode>(manager.editorList.values());
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166 }
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167 //GUIに反映
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168 Runnable doRun = new DoGUIUpdate(sList, eList, gui);
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169 gui.invokeLater(doRun);
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170 }
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171
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172 public void setMyHostName(String localHostName) {
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173 myHost = localHostName + receive_port;
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174 setHostToEditor(myHost);
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175 }
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176
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177 public String myHost() {
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178 return myHost;
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179 }
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180
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181 private void setHostToEditor(String myHost2) {
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182 for(REPNode editor : manager.editorList.values()){
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183 if (editor.channel!=null)
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184 editor.setHost(myHost2);
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185 }
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186 }
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187
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188
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189 public void buttonPressed(SessionManagerEvent event) {
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190 try {
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191 waitingEventQueue.put(event);
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192 } catch (InterruptedException e) {}
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193 selector.wakeup();
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194 }
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195
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196 public void syncExec(SessionManagerEvent event) {
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197 try {
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198 waitingEventQueue.put(event);
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199 } catch (InterruptedException e) {
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200 }
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201 }
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202
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203 public void addWriteQueue(PacketSet packetSet) {
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204 writeQueue.addLast(packetSet);
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205 assert(writeQueue.size()<SessionManager.packetLimit) ;
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206 }
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207
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208 public void setParentPort(int port) {
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209 parent_port = port;
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210 }
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211
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212 public int getParentPort() {
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213 return parent_port;
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214 }
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215
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216 public int getPort() {
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217 return receive_port;
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218 }
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219
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220 public void execAfterConnect(SessionManagerEvent sessionManagerEvent) {
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221 execAfterConnect = sessionManagerEvent;
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222 }
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223
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224 public void afterConnect() {
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225 SessionManagerEvent e = execAfterConnect;
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226 execAfterConnect = null;
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227 if (e!=null) e.exec(manager);
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228 }
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229
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230 void removeChannel(SessionManager sessionManager, REPNode channel) {
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231 REPSelectionKey<REPCommand> key = channel.channel.keyFor1(selector);
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232 key.cancel();
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233 try {
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234 channel.channel.close1();
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235 } catch (IOException e) {
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236 }
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237 }
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238
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239 public String toString() {
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240 return ""+myHost+":"+receive_port;
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241 }
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242
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243
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244 public void setGUI(SessionManagerGUI gui) {
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245 this.gui = gui;
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246 }
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247
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248 public void setManager(SessionManager sessionManager) {
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249 manager = sessionManager;
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250 }
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251
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252 } |
