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0
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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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2
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5 import java.nio.channels.SelectableChannel;
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0
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6 import java.nio.channels.SelectionKey;
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7 import java.nio.channels.Selector;
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179
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8
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178
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9 import java.util.Iterator;
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83
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10 import java.util.LinkedList;
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144
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11 import java.util.List;
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178
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12 import java.util.concurrent.BlockingQueue;
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192
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13 import java.util.concurrent.LinkedBlockingQueue;
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0
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14
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198
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15 import javax.swing.SwingUtilities;
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16
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123
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17 import rep.channel.REPServerSocketChannel;
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133
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18 import rep.channel.REPSocketChannel;
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144
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19 import rep.handler.PacketSet;
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146
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20 import rep.handler.REPHandler;
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148
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21 import rep.handler.REPHandlerImpl;
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164
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22 import rep.handler.REPHandlerInMerge;
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158
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23 import rep.channel.REPSelector;
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56
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24 import rep.xml.SessionXMLDecoder;
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45
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25 import rep.xml.SessionXMLEncoder;
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198
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26 import rep.channel.REPSelectionKey;
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27 /*
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1
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28 //+-------+--------+--------+-------+--------+---------+------+
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29 //| cmd | session| editor | seqid | lineno | textsiz | text |
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30 //| | id | id | | | | |
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31 //+-------+--------+--------+-------+--------+---------+------+
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32 //o-------header section (network order)-------------o
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198
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33 int cmd; // command
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101
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34 int sid; // session ID : uniqu to editing file
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123
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35 int eid; // editor ID : owner editor ID = 1。Session に対して unique
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122
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36 int seqno; // Sequence number : sequence number はエディタごとに管理
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1
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37 int lineno; // line number
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101
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38 int textsize; // textsize : bytesize
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198
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39 byte[] text;
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40 */
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1
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41
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8
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42 public class SessionManager implements ConnectionListener, REPActionListener{
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0
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43
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164
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44 private LinkedList<Session> sessionList;
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83
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45 private SessionManagerGUI gui;
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198
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46 private REPSelector<REPCommand> selector;
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7
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47 private SessionManagerList smList;
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17
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48 private String myHost;
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21
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49 private boolean isMaster = true;
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144
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50 private List<Editor> editorList;
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78
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51 private String maxHost;
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148
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52 private boolean isSimulation;
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212
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53 private List<PacketSet> waitingCommandInMerge;
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178
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54 private BlockingQueue<SessionManagerEvent> waitingQueue;
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95
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55 private static int temp_port;
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56 private static int send_port;
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101
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57 static final int DEFAULT_PORT = 8766;
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58
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2
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59 public SessionManager(int port) {
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191
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60
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2
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61 }
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62
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63 public void openSelector() throws IOException{
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191
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64 selector = REPSelector.create();
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2
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65 }
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0
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66
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155
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67 public void init(int port) throws InterruptedException, IOException {
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2
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68
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186
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69 REPServerSocketChannel<REPCommand> ssc = REPServerSocketChannel.<REPCommand>open(new REPCommandPacker());
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122
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70 ssc.configureBlocking(false); //reuse address 必須
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101
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71 ssc.socket().setReuseAddress(true);
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212
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72 //getAllByNameで取れた全てのアドレスに対してbindする
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73 ssc.socket().bind(new InetSocketAddress(port));
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192
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74 ssc.register(selector, SelectionKey.OP_ACCEPT, new REPHandlerImpl(-1, this));
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6
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75
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144
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76 sessionList = new LinkedList<Session>();
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7
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77 smList = new SessionManagerList();
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144
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78 editorList = new LinkedList<Editor>();
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212
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79 waitingCommandInMerge = new LinkedList<PacketSet>();
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192
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80 waitingQueue = new LinkedBlockingQueue<SessionManagerEvent>();
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215
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81
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155
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82 }
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83
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84 private void mainLoop() throws IOException {
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0
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85 while(true){
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178
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86 if(checkSend()){
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87 if(selector.selectNow() > 0){
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88 select();
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89 }
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90 continue;
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91 }
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215
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92 System.out.println(selector.select());
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144
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93 select();
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94 }
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95 }
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96
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178
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97 private boolean checkSend() {
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212
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98 for(Iterator<PacketSet> it = waitingCommandInMerge.iterator(); it.hasNext();){
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178
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99 PacketSet p = it.next();
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100 if(p.getEditor().isMerging()) {
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101 continue;
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102 }else{
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103 manage(p.channel, p.command);
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104 it.remove();
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212
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105 return true;
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178
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106 }
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107 }
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108 return false;
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109 }
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110
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144
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111 private void select() throws IOException {
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212
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112 SessionManagerEvent e;
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113 while((e = waitingQueue.poll())!=null){
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178
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114 e.exec();
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115 }
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198
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116 for(REPSelectionKey<REPCommand> key : selector.selectedKeys1()){
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144
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117 if(key.isAcceptable()){
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118 /*** serverChannelはenableになったSelectionKeyのchannel ***/
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199
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119 REPSocketChannel<REPCommand> channel = key.accept(new REPCommandPacker());
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144
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120 registerChannel (selector, channel, SelectionKey.OP_READ);
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121 channel = null;
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123
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122
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144
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123 }else if(key.isReadable()){
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212
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124 REPHandler handler = (REPHandler)(key.attachment());
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146
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125 handler.handle(key);
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144
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126
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0
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127 }
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128 }
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129 }
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1
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130
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212
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131 private void registerChannel(REPSelector selector, SelectableChannel channel, int ops) throws IOException {
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2
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132 if(channel == null) {
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133 return;
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134 }
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135 channel.configureBlocking(false);
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170
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136 REPHandler handler = new REPHandlerImpl(-1, this);
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148
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137 channel.register(selector, ops, handler);
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2
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138 }
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139
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144
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140 public void manage(REPSocketChannel<REPCommand> channel, REPCommand receivedCommand) {
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75
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141 if(receivedCommand == null) return;
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158
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142 //Session session;
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141
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143 REPCommand sendCommand = new REPCommand(receivedCommand);
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178
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144 REPSocketChannel<REPCommand> send = channel;
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144
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145
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75
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146 switch(receivedCommand.cmd){
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144
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147
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0
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148 case REP.SMCMD_JOIN:
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164
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149 {
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150 //どのSessionにも属さないエディタをリストに追加
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212
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151 //エディタとchannelは1対1
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152 //エディタが新しくputする場合は新しくソケットを作る
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164
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153 Editor editor = new Editor(editorList.size(), channel);
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154 editor.setHost(myHost);
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155 editorList.add(editor);
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144
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156
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212
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157 guiUpdate();
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199
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158
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164
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159 }
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160
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161 break;
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144
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162
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1
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163 case REP.SMCMD_JOIN_ACK:
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212
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164 assert (false);
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1
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165 break;
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144
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166
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0
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167 case REP.SMCMD_PUT:
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164
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168 {
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169 //エディタのリストに追加
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170 Editor editor = new Editor(editorList.size(), channel);
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171 editorList.add(editor);
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172
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173 //Sessionを生成
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174 int sid = sessionList.size();
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175 editor = new Editor(0, channel);
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176 editor.setHost(myHost);
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177 Session session = new Session(sid, editor);
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178 session.hasOwner(true);
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179 sessionList.add(new Session(sid, editor));
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180
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212
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181 guiUpdate();
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158
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182
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164
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183 //エディタにAckを送信
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184 sendCommand.setCMD(REP.SMCMD_PUT_ACK);
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185 sendCommand.setEID(editor.getEID());
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186 sendCommand.setSID(session.getSID());
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187 editor.send(sendCommand);
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144
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188
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164
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189 //他のSessionManagerへSessionの追加を報告
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212
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190 //親に送って、親から子へ
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164
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191 SessionXMLEncoder sessionEncoder = new SessionXMLEncoder(session);
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192 REPCommand command = new REPCommand();
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193 command.setSID(session.getSID());
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194 command.setString(sessionEncoder.sessionListToXML());
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195 command.setCMD(REP.SMCMD_UPDATE);
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196 smList.sendExcept(channel, command);
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197
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198 }
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199
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200 break;
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133
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201
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0
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202 case REP.SMCMD_SELECT:
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164
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203 {
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178
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204 //他のSessionManagerをエディタとしてSessionに追加
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164
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205 Editor editor = new Editor(channel);
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206 Session session = getSession(receivedCommand.sid);
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207 session.addEditor(editor);
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208
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209 if(session.hasOwner()){
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210 //このSessionManagerがオーナーを持っている場合、Sessionにエディタを追加し、エディタへAckを返す
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211 sendCommand.setCMD(REP.SMCMD_SELECT_ACK);
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212 sendCommand.setEID(editor.getEID());
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213 editor.send(sendCommand);
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214 }else{
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215 //オーナーを持ってない場合は、オーナーを持っているSessionManagerへSELECTコマンドを中継する
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216 Editor owner = session.getOwner();
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217 owner.send(receivedCommand);
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148
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218 }
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164
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219 }
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144
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220
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164
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221 break;
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144
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222
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8
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223 case REP.SMCMD_SELECT_ACK:
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160
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224 {
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85
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225 String hostport = receivedCommand.string;
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160
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226 Editor editor = getEditor(hostport);
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164
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227
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160
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228 if(editor != null) {
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229 //host, port を見て、このコマンドが自分が送信したSelectコマンドのAckかどうかを判断する
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230 REPCommand command = new REPCommand();
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231 command.setCMD(REP.SMCMD_JOIN_ACK);
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232 command.setSID(receivedCommand.sid);
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233 command.setEID(receivedCommand.eid);
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234 editor.send(command);
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164
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235
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85
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236 }else{
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160
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237 //自分が送信したコマンドでなければ、次のSessionManagerへ中継する
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85
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238 smList.sendExcept(channel, receivedCommand);
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239 }
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160
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240 }
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144
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241
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164
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242 break;
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144
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243
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8
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244 case REP.SMCMD_SM_JOIN:
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164
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245
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160
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246 {
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122
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247 //SessionManagerのリストへ追加
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83
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248 smList.add(channel);
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144
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249
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122
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250 //XMLからSessionListオブジェクトを生成する。
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77
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251 SessionXMLDecoder decoder = new SessionXMLDecoder();
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79
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252 SessionList receivedSessionList = decoder.decode(receivedCommand.string);
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144
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253
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122
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254 //myHost を設定。
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178
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255 //立ち上げ時にやるとlocalhostしか取れない
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76
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256 if(myHost == null) setMyHostName(getLocalHostName(channel));
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144
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257
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122
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258 //maxHost を設定。
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95
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259 if(setMaxHost(channel, receivedSessionList.getMaxHost())){
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260 sendCommand = new REPCommand();
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261 sendCommand.setCMD(REP.SMCMD_CH_MASTER);
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262 sendCommand.setString(maxHost);
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263 smList.sendExcept(channel, sendCommand);
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264 }
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144
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265
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122
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266 //SessionListからXMLを生成。
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267 //joinしてきたSessionManagerに対してACKを送信。
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164
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268 SessionXMLEncoder sessionlistEncoder = new SessionXMLEncoder(sessionList);
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78
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269 sendCommand = new REPCommand();
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270 sendCommand.setCMD(REP.SMCMD_SM_JOIN_ACK);
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271 sendCommand.setString(sessionlistEncoder.sessionListToXML());
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178
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272 send.write(sendCommand);
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144
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273
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122
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274 //その他の SessionManager に対して SMCMD_UPDATEを 送信。
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78
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275 sendCommand = new REPCommand();
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83
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276 sendCommand.setCMD(REP.SMCMD_UPDATE);
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78
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277 sendCommand.setString(receivedCommand.string);
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278 smList.sendExcept(channel, sendCommand);
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144
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279
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160
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280 }
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164
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281 break;
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144
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282
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8
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283 case REP.SMCMD_SM_JOIN_ACK:
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144
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284
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122
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285 //XMLからSessionListオブジェクトを生成。
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82
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286 SessionXMLDecoder decoder2 = new SessionXMLDecoder();
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287 SessionList receivedSessionList2 = decoder2.decode(receivedCommand.string);
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144
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288
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122
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289 //maxHostを決定。
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95
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290 if(setMaxHost(channel, receivedSessionList2.getMaxHost())){
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291 sendCommand = new REPCommand();
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292 sendCommand.setCMD(REP.SMCMD_CH_MASTER);
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293 sendCommand.setString(maxHost);
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294 smList.sendExcept(channel, sendCommand);
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295 }
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144
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296
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6
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297 break;
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144
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298
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8
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299 case REP.SMCMD_UPDATE:
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200
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300 {
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99
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301 SessionXMLDecoder decoder3 = new SessionXMLDecoder();
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302 SessionList receivedSessionList3 = decoder3.decode(receivedCommand.string);
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144
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303
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200
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304 //UPDATEコマンドにより送られてきたSessionの情報を追加する
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305 LinkedList<Session> list = receivedSessionList3.getList();
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306 for(Session session : list){
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307 session.getEditorList().get(0).setChannel(channel);
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308 sessionList.add(session);
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309 }
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310
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311 //他のSessionManagerへ中継する
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99
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312 smList.sendExcept(channel, receivedCommand);
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144
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313
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200
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314 //リストのコピーをGUIに渡す
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315 LinkedList<Session> sList = new LinkedList<Session>(sessionList);
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316 LinkedList<Editor> eList = new LinkedList<Editor>(editorList);
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317 //GUIに反映
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318 Runnable doRun = new DoGUIUpdate(sList, eList, gui);
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319 SwingUtilities.invokeLater(doRun);
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320 }
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9
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321 break;
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144
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322
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9
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323 case REP.SMCMD_UPDATE_ACK:
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200
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324 {
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164
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325 if(receivedCommand.sid > sessionList.size()){
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148
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326 Editor editor = new Editor(channel);
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75
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327 editor.setName(receivedCommand.string);
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144
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328
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158
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329 Session session = new Session(editor);
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73
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330 session.addEditor(editor);
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144
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331
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164
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332 sessionList.add(session);
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200
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333
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334 //リストのコピーをGUIに渡す
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335 LinkedList<Session> sList = new LinkedList<Session>(sessionList);
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336 LinkedList<Editor> eList = new LinkedList<Editor>(editorList);
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337 //GUIに反映
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338 Runnable doRun = new DoGUIUpdate(sList, eList, gui);
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339 SwingUtilities.invokeLater(doRun);
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73
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340 }
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75
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341 smList.sendToSlave(receivedCommand);
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200
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342 }
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1
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343 break;
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144
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344
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95
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345 case REP.SMCMD_CH_MASTER:
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200
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346 {
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122
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347 //maxHost を設定。
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95
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348 if(setMaxHost(channel, receivedCommand.string)){
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349 sendCommand = new REPCommand();
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350 sendCommand.setCMD(REP.SMCMD_CH_MASTER);
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351 sendCommand.setString(maxHost);
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352 smList.sendExcept(channel, sendCommand);
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353 }
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200
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354 }
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95
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355 break;
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144
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356
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213
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357 case REP.REPCMD_DELETE:
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358 case REP.REPCMD_INSERT:
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164
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359 {
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144
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360 //sid から Session を取得
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158
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361 Session session = getSession(receivedCommand.sid);
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144
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362 //マージの処理と次のエディタへコマンドを送信する処理
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363 session.translate(channel, receivedCommand);
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164
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364
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178
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365
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167
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366 Editor editor = session.getEditor(channel);
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367 Editor prevEditor = session.getPrevEditor(editor);
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368
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201
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369 //マージ中のエディタはコマンドを受け取らない
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164
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370 if(editor.isMerging()){
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371 //Handlerを切り替える
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167
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372 setMergeState(prevEditor.getChannel(), session.getSID());
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169
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373 }else {
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178
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374 setNormalState(prevEditor.getChannel(), session.getSID());
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164
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375 }
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|
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376 }
|
|
144
|
377 break;
|
|
213
|
378
|
|
|
379 default:
|
|
|
380 assert(false);
|
|
|
381 break;
|
|
|
382
|
|
144
|
383 }
|
|
|
384 }
|
|
|
385
|
|
212
|
386 private void guiUpdate() {
|
|
|
387 //リストのコピーをGUIに渡す
|
|
|
388 LinkedList<Session> sList = new LinkedList<Session>(sessionList);
|
|
|
389 LinkedList<Editor> eList = new LinkedList<Editor>(editorList);
|
|
|
390 //GUIに反映
|
|
|
391 Runnable doRun = new DoGUIUpdate(sList, eList, gui);
|
|
|
392 SwingUtilities.invokeLater(doRun);
|
|
|
393 }
|
|
|
394
|
|
169
|
395 private void setNormalState(REPSocketChannel<REPCommand> channel, int sid) {
|
|
|
396 SelectionKey key = channel.keyFor(selector);
|
|
|
397 key.attach(new REPHandlerImpl(sid, this));
|
|
|
398 }
|
|
|
399
|
|
167
|
400 private void setMergeState(REPSocketChannel<REPCommand> channel, int sid) {
|
|
|
401 SelectionKey key = channel.keyFor(selector);
|
|
|
402 key.attach(new REPHandlerInMerge(sid, this));
|
|
164
|
403 }
|
|
|
404
|
|
160
|
405 private Editor getEditor(String hostport) {
|
|
178
|
406 for(Editor editor : editorList){
|
|
|
407 if(editor.getHost() == hostport){
|
|
|
408 return editor;
|
|
|
409 }
|
|
|
410 }
|
|
|
411 return null;
|
|
|
412 }
|
|
|
413
|
|
|
414 public Editor getEditor(REPSocketChannel channel){
|
|
|
415 for(Editor editor : editorList){
|
|
|
416 if(editor.getChannel() == channel){
|
|
|
417 return editor;
|
|
|
418 }
|
|
|
419 }
|
|
160
|
420 return null;
|
|
|
421 }
|
|
|
422
|
|
144
|
423 private Session getSession(int sid) {
|
|
|
424 for(Session session : sessionList){
|
|
|
425 if(session.getSID() == sid) return session;
|
|
|
426 }
|
|
|
427 return null;
|
|
0
|
428 }
|
|
83
|
429
|
|
139
|
430 private boolean setMaxHost(REPSocketChannel channel, String maxHost2) {
|
|
179
|
431 if(maxHost.compareTo(maxHost2) > 0){
|
|
|
432 return false;
|
|
|
433 }else{
|
|
|
434 maxHost = maxHost2;
|
|
|
435 return true;
|
|
|
436 }
|
|
139
|
437 }
|
|
|
438
|
|
76
|
439 private void setMyHostName(String localHostName) {
|
|
95
|
440 myHost = localHostName + temp_port;
|
|
81
|
441 if(maxHost == null) {
|
|
|
442 maxHost = myHost;
|
|
|
443 }
|
|
164
|
444 setHostToEditor(myHost);
|
|
|
445 }
|
|
|
446
|
|
|
447 private void setHostToEditor(String myHost2) {
|
|
|
448 for(Editor editor : editorList){
|
|
|
449 editor.setHost(myHost2);
|
|
|
450 }
|
|
76
|
451 }
|
|
0
|
452
|
|
|
453 public static void main(String[] args) throws InterruptedException, IOException {
|
|
191
|
454
|
|
101
|
455 int port = DEFAULT_PORT;
|
|
|
456 int port_s = DEFAULT_PORT;
|
|
113
|
457 //System.setProperty("file.encoding", "UTF-8");
|
|
82
|
458 if(args.length > 0){
|
|
39
|
459 port = Integer.parseInt(args[0]);
|
|
95
|
460 port_s = Integer.parseInt(args[1]);
|
|
0
|
461 }
|
|
95
|
462 temp_port = port;
|
|
|
463 send_port = port_s;
|
|
0
|
464 SessionManager sm = new SessionManager(port);
|
|
2
|
465 sm.openSelector();
|
|
155
|
466 sm.init(port);
|
|
191
|
467 sm.startGUI(sm);
|
|
155
|
468 sm.mainLoop();
|
|
191
|
469
|
|
0
|
470 }
|
|
|
471
|
|
191
|
472 private void startGUI(SessionManager sm) {
|
|
|
473 gui = new SessionManagerGUI(this);
|
|
83
|
474 Thread th = new Thread( gui );
|
|
2
|
475 th.start();
|
|
|
476 }
|
|
|
477
|
|
178
|
478 public void connectSession(String host) {
|
|
101
|
479 int port = DEFAULT_PORT;
|
|
95
|
480 port = send_port;
|
|
1
|
481 InetSocketAddress addr = new InetSocketAddress(host, port);
|
|
|
482 try {
|
|
186
|
483 REPSocketChannel<REPCommand> sessionchannel = REPSocketChannel.<REPCommand>create(new REPCommandPacker());
|
|
1
|
484 sessionchannel.configureBlocking(true);
|
|
|
485 sessionchannel.connect(addr);
|
|
6
|
486 while(!sessionchannel.finishConnect()){
|
|
77
|
487 System.out.print("test afro");
|
|
6
|
488 }
|
|
|
489 System.out.println("");
|
|
2
|
490 registerChannel(selector, sessionchannel, SelectionKey.OP_READ);
|
|
45
|
491
|
|
77
|
492 sm_join(sessionchannel);
|
|
45
|
493
|
|
1
|
494 }catch (IOException e) {
|
|
|
495 e.printStackTrace();
|
|
|
496 }
|
|
|
497 }
|
|
77
|
498
|
|
164
|
499 private void sm_join(REPSocketChannel<REPCommand> channel){
|
|
79
|
500
|
|
122
|
501 //SM_JOINコマンドを生成。
|
|
77
|
502 REPCommand command = new REPCommand();
|
|
|
503 command.setCMD(REP.SMCMD_SM_JOIN);
|
|
79
|
504
|
|
122
|
505 //hostnameをセット。
|
|
82
|
506 setMyHostName(getLocalHostName(channel));
|
|
|
507
|
|
122
|
508 //XMLを生成。送信コマンドにセット。
|
|
164
|
509 SessionXMLEncoder encoder = new SessionXMLEncoder(sessionList);
|
|
77
|
510 String string = encoder.sessionListToXML();
|
|
|
511 command.setString(string);
|
|
|
512
|
|
122
|
513 //SM_JOINコマンドを送信。
|
|
186
|
514 channel.write(command);
|
|
122
|
515 //SessionManagerのListに追加。
|
|
77
|
516 smList.add(channel);
|
|
|
517 }
|
|
2
|
518
|
|
139
|
519 private String getLocalHostName(REPSocketChannel channel) {
|
|
74
|
520 String host = null;
|
|
|
521 host = channel.socket().getLocalAddress().getHostName();
|
|
|
522 return host;
|
|
|
523 }
|
|
|
524
|
|
2
|
525 public void connectionOccured(ConnectionEvent event) {
|
|
178
|
526 try {
|
|
|
527 waitingQueue.put(event);
|
|
|
528 } catch (InterruptedException e) {
|
|
|
529 }
|
|
|
530 selector.wakeup();
|
|
2
|
531 }
|
|
8
|
532
|
|
213
|
533 public void selectOccured(REPActionEvent event) {
|
|
212
|
534 try {
|
|
|
535 waitingQueue.put(event);
|
|
|
536 } catch (InterruptedException e) {
|
|
|
537 e.printStackTrace();
|
|
|
538 }
|
|
213
|
539 selector.wakeup();
|
|
212
|
540 }
|
|
|
541
|
|
|
542 public void selectSession(REPActionEvent event) {
|
|
163
|
543 REPSocketChannel<REPCommand> channel = event.getEditorChannel();
|
|
107
|
544 int sid = event.getSID();
|
|
164
|
545 Session session = getSession(sid);
|
|
213
|
546 selector.wakeup();
|
|
158
|
547 if(session.hasOwner()){
|
|
148
|
548 Editor editor = new Editor(channel);
|
|
|
549 session.addEditor(new Editor(channel));
|
|
107
|
550 REPCommand sendCommand = new REPCommand();
|
|
|
551 sendCommand.setCMD(REP.SMCMD_JOIN_ACK);
|
|
148
|
552 sendCommand.setEID(editor.getEID());
|
|
107
|
553 sendCommand.setSID(sid);
|
|
186
|
554 channel.write(sendCommand);
|
|
107
|
555 }else {
|
|
164
|
556 REPSocketChannel<REPCommand> editorChannel = event.getEditorChannel();
|
|
107
|
557 sid = event.getSID();
|
|
|
558 Editor editor = new Editor(editorChannel);
|
|
|
559 editor.setHost(myHost);
|
|
164
|
560 session = getSession(sid);
|
|
107
|
561 session.addEditor(editor);
|
|
|
562
|
|
158
|
563 Editor owner = session.getOwner();
|
|
107
|
564
|
|
|
565 REPCommand command = new REPCommand();
|
|
|
566 command.setCMD(REP.SMCMD_SELECT);
|
|
|
567 command.setSID(sid);
|
|
178
|
568 command.setString(editor.getHost());
|
|
107
|
569 owner.send(command);
|
|
|
570 }
|
|
8
|
571 }
|
|
122
|
572
|
|
144
|
573 public void addWaitingCommand(PacketSet set) {
|
|
212
|
574 waitingCommandInMerge.add(set);
|
|
144
|
575 }
|
|
148
|
576
|
|
185
|
577 public List<Session> getSessionList() {
|
|
|
578 // TODO Auto-generated method stub
|
|
|
579 return sessionList;
|
|
|
580 }
|
|
|
581
|
|
|
582 public List<Editor> getEditorList() {
|
|
|
583 // TODO Auto-generated method stub
|
|
|
584 return editorList;
|
|
|
585 }
|
|
|
586
|
|
0
|
587 }
|
