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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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178
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7 import java.util.Iterator;
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83
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8 import java.util.LinkedList;
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144
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9 import java.util.List;
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178
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10 import java.util.concurrent.BlockingQueue;
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192
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11 import java.util.concurrent.LinkedBlockingQueue;
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0
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12
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198
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13 import javax.swing.SwingUtilities;
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14
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123
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15 import rep.channel.REPServerSocketChannel;
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133
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16 import rep.channel.REPSocketChannel;
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144
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17 import rep.handler.PacketSet;
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146
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18 import rep.handler.REPHandler;
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148
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19 import rep.handler.REPHandlerImpl;
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164
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20 import rep.handler.REPHandlerInMerge;
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158
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21 import rep.channel.REPSelector;
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56
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22 import rep.xml.SessionXMLDecoder;
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45
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23 import rep.xml.SessionXMLEncoder;
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198
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24 import rep.channel.REPSelectionKey;
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25 /*
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1
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26 //+-------+--------+--------+-------+--------+---------+------+
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27 //| cmd | session| editor | seqid | lineno | textsiz | text |
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28 //| | id | id | | | | |
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29 //+-------+--------+--------+-------+--------+---------+------+
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30 //o-------header section (network order)-------------o
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198
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31 int cmd; // command
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101
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32 int sid; // session ID : uniqu to editing file
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123
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33 int eid; // editor ID : owner editor ID = 1。Session に対して unique
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122
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34 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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35 int lineno; // line number
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101
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36 int textsize; // textsize : bytesize
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198
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37 byte[] text;
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38 */
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1
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39
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222
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40 public class SessionManager implements SessionManagerEventListener{
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0
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41
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164
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42 private LinkedList<Session> sessionList;
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83
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43 private SessionManagerGUI gui;
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198
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44 private REPSelector<REPCommand> selector;
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7
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45 private SessionManagerList smList;
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17
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46 private String myHost;
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21
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47 private boolean isMaster = true;
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144
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48 private List<Editor> editorList;
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78
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49 private String maxHost;
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212
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50 private List<PacketSet> waitingCommandInMerge;
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178
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51 private BlockingQueue<SessionManagerEvent> waitingQueue;
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95
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52 private static int temp_port;
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53 private static int send_port;
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101
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54 static final int DEFAULT_PORT = 8766;
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55
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2
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56 public SessionManager(int port) {
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191
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57
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2
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58 }
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59
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60 public void openSelector() throws IOException{
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191
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61 selector = REPSelector.create();
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2
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62 }
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0
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63
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155
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64 public void init(int port) throws InterruptedException, IOException {
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2
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65
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186
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66 REPServerSocketChannel<REPCommand> ssc = REPServerSocketChannel.<REPCommand>open(new REPCommandPacker());
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122
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67 ssc.configureBlocking(false); //reuse address 必須
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101
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68 ssc.socket().setReuseAddress(true);
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212
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69 //getAllByNameで取れた全てのアドレスに対してbindする
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70 ssc.socket().bind(new InetSocketAddress(port));
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192
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71 ssc.register(selector, SelectionKey.OP_ACCEPT, new REPHandlerImpl(-1, this));
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6
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72
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144
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73 sessionList = new LinkedList<Session>();
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7
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74 smList = new SessionManagerList();
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144
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75 editorList = new LinkedList<Editor>();
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212
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76 waitingCommandInMerge = new LinkedList<PacketSet>();
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192
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77 waitingQueue = new LinkedBlockingQueue<SessionManagerEvent>();
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215
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78
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155
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79 }
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80
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81 private void mainLoop() throws IOException {
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0
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82 while(true){
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178
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83 if(checkSend()){
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84 if(selector.selectNow() > 0){
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85 select();
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86 }
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87 continue;
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88 }
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222
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89 int i = selector.select();
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90 System.out.println(i);
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144
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91 select();
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92 }
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93 }
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94
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178
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95 private boolean checkSend() {
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212
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96 for(Iterator<PacketSet> it = waitingCommandInMerge.iterator(); it.hasNext();){
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178
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97 PacketSet p = it.next();
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98 if(p.getEditor().isMerging()) {
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99 continue;
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100 }else{
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101 manage(p.channel, p.command);
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102 it.remove();
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212
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103 return true;
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178
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104 }
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105 }
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106 return false;
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107 }
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108
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144
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109 private void select() throws IOException {
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212
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110 SessionManagerEvent e;
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111 while((e = waitingQueue.poll())!=null){
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178
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112 e.exec();
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113 }
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198
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114 for(REPSelectionKey<REPCommand> key : selector.selectedKeys1()){
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144
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115 if(key.isAcceptable()){
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116 /*** serverChannelはenableになったSelectionKeyのchannel ***/
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199
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117 REPSocketChannel<REPCommand> channel = key.accept(new REPCommandPacker());
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144
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118 registerChannel (selector, channel, SelectionKey.OP_READ);
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119 channel = null;
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123
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120
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144
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121 }else if(key.isReadable()){
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212
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122 REPHandler handler = (REPHandler)(key.attachment());
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146
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123 handler.handle(key);
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144
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124
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0
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125 }
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126 }
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127 }
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1
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128
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212
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129 private void registerChannel(REPSelector selector, SelectableChannel channel, int ops) throws IOException {
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2
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130 if(channel == null) {
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131 return;
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132 }
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133 channel.configureBlocking(false);
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170
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134 REPHandler handler = new REPHandlerImpl(-1, this);
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148
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135 channel.register(selector, ops, handler);
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2
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136 }
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137
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144
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138 public void manage(REPSocketChannel<REPCommand> channel, REPCommand receivedCommand) {
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75
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139 if(receivedCommand == null) return;
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158
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140 //Session session;
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141
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141 REPCommand sendCommand = new REPCommand(receivedCommand);
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178
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142 REPSocketChannel<REPCommand> send = channel;
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144
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143
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75
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144 switch(receivedCommand.cmd){
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144
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145
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0
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146 case REP.SMCMD_JOIN:
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164
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147 {
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148 //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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149 //エディタとchannelは1対1
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150 //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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151 Editor editor = new Editor(editorList.size(), channel);
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152 editor.setHost(myHost);
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153 editorList.add(editor);
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144
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154
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212
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155 guiUpdate();
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199
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156
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164
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157 }
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158
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159 break;
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144
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160
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1
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161 case REP.SMCMD_JOIN_ACK:
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212
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162 assert (false);
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1
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163 break;
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144
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164
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0
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165 case REP.SMCMD_PUT:
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164
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166 {
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167 //エディタのリストに追加
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168 Editor editor = new Editor(editorList.size(), channel);
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169 editorList.add(editor);
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170
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171 //Sessionを生成
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172 int sid = sessionList.size();
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173 editor = new Editor(0, channel);
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174 editor.setHost(myHost);
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175 Session session = new Session(sid, editor);
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176 session.hasOwner(true);
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177 sessionList.add(new Session(sid, editor));
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178
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212
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179 guiUpdate();
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158
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180
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164
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181 //エディタにAckを送信
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182 sendCommand.setCMD(REP.SMCMD_PUT_ACK);
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183 sendCommand.setEID(editor.getEID());
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184 sendCommand.setSID(session.getSID());
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185 editor.send(sendCommand);
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144
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186
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164
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187 //他のSessionManagerへSessionの追加を報告
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212
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188 //親に送って、親から子へ
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164
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189 SessionXMLEncoder sessionEncoder = new SessionXMLEncoder(session);
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190 REPCommand command = new REPCommand();
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191 command.setSID(session.getSID());
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192 command.setString(sessionEncoder.sessionListToXML());
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193 command.setCMD(REP.SMCMD_UPDATE);
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194 smList.sendExcept(channel, command);
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195
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196 }
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197
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198 break;
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133
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199
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0
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200 case REP.SMCMD_SELECT:
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164
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201 {
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178
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202 //他のSessionManagerをエディタとしてSessionに追加
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164
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203 Editor editor = new Editor(channel);
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204 Session session = getSession(receivedCommand.sid);
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205 session.addEditor(editor);
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206
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207 if(session.hasOwner()){
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208 //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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209 sendCommand.setCMD(REP.SMCMD_SELECT_ACK);
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210 sendCommand.setEID(editor.getEID());
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211 editor.send(sendCommand);
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212 }else{
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213 //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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214 Editor owner = session.getOwner();
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215 owner.send(receivedCommand);
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148
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216 }
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164
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217 }
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144
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218
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164
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219 break;
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144
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220
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8
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221 case REP.SMCMD_SELECT_ACK:
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160
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222 {
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85
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223 String hostport = receivedCommand.string;
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160
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224 Editor editor = getEditor(hostport);
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164
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225
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160
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226 if(editor != null) {
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227 //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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228 REPCommand command = new REPCommand();
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229 command.setCMD(REP.SMCMD_JOIN_ACK);
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230 command.setSID(receivedCommand.sid);
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231 command.setEID(receivedCommand.eid);
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232 editor.send(command);
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164
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233
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85
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234 }else{
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160
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235 //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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236 smList.sendExcept(channel, receivedCommand);
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237 }
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160
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238 }
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144
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239
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164
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240 break;
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144
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241
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8
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242 case REP.SMCMD_SM_JOIN:
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164
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243
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160
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244 {
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122
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245 //SessionManagerのリストへ追加
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83
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246 smList.add(channel);
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144
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247
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122
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248 //XMLからSessionListオブジェクトを生成する。
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77
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249 SessionXMLDecoder decoder = new SessionXMLDecoder();
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79
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250 SessionList receivedSessionList = decoder.decode(receivedCommand.string);
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144
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251
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122
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252 //myHost を設定。
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178
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253 //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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254 if(myHost == null) setMyHostName(getLocalHostName(channel));
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144
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255
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122
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256 //maxHost を設定。
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95
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257 if(setMaxHost(channel, receivedSessionList.getMaxHost())){
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258 sendCommand = new REPCommand();
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259 sendCommand.setCMD(REP.SMCMD_CH_MASTER);
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260 sendCommand.setString(maxHost);
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261 smList.sendExcept(channel, sendCommand);
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262 }
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144
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263
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122
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264 //SessionListからXMLを生成。
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265 //joinしてきたSessionManagerに対してACKを送信。
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164
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266 SessionXMLEncoder sessionlistEncoder = new SessionXMLEncoder(sessionList);
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78
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267 sendCommand = new REPCommand();
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268 sendCommand.setCMD(REP.SMCMD_SM_JOIN_ACK);
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269 sendCommand.setString(sessionlistEncoder.sessionListToXML());
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178
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270 send.write(sendCommand);
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144
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271
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122
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272 //その他の SessionManager に対して SMCMD_UPDATEを 送信。
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78
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273 sendCommand = new REPCommand();
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83
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274 sendCommand.setCMD(REP.SMCMD_UPDATE);
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78
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275 sendCommand.setString(receivedCommand.string);
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276 smList.sendExcept(channel, sendCommand);
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144
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277
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160
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278 }
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164
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279 break;
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144
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280
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8
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281 case REP.SMCMD_SM_JOIN_ACK:
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144
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282
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122
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283 //XMLからSessionListオブジェクトを生成。
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82
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284 SessionXMLDecoder decoder2 = new SessionXMLDecoder();
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285 SessionList receivedSessionList2 = decoder2.decode(receivedCommand.string);
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144
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286
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122
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287 //maxHostを決定。
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95
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288 if(setMaxHost(channel, receivedSessionList2.getMaxHost())){
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289 sendCommand = new REPCommand();
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290 sendCommand.setCMD(REP.SMCMD_CH_MASTER);
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291 sendCommand.setString(maxHost);
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292 smList.sendExcept(channel, sendCommand);
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293 }
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144
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294
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6
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295 break;
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144
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296
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8
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297 case REP.SMCMD_UPDATE:
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200
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298 {
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99
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299 SessionXMLDecoder decoder3 = new SessionXMLDecoder();
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300 SessionList receivedSessionList3 = decoder3.decode(receivedCommand.string);
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144
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301
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200
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302 //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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303 LinkedList<Session> list = receivedSessionList3.getList();
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304 for(Session session : list){
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305 session.getEditorList().get(0).setChannel(channel);
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306 sessionList.add(session);
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307 }
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308
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309 //他のSessionManagerへ中継する
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99
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310 smList.sendExcept(channel, receivedCommand);
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144
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311
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200
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312 //リストのコピーをGUIに渡す
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313 LinkedList<Session> sList = new LinkedList<Session>(sessionList);
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314 LinkedList<Editor> eList = new LinkedList<Editor>(editorList);
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315 //GUIに反映
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316 Runnable doRun = new DoGUIUpdate(sList, eList, gui);
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317 SwingUtilities.invokeLater(doRun);
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318 }
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9
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319 break;
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144
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320
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9
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321 case REP.SMCMD_UPDATE_ACK:
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200
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322 {
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164
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323 if(receivedCommand.sid > sessionList.size()){
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148
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324 Editor editor = new Editor(channel);
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75
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325 editor.setName(receivedCommand.string);
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144
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326
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158
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327 Session session = new Session(editor);
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73
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328 session.addEditor(editor);
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144
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329
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164
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330 sessionList.add(session);
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200
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331
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332 //リストのコピーをGUIに渡す
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333 LinkedList<Session> sList = new LinkedList<Session>(sessionList);
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334 LinkedList<Editor> eList = new LinkedList<Editor>(editorList);
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335 //GUIに反映
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336 Runnable doRun = new DoGUIUpdate(sList, eList, gui);
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337 SwingUtilities.invokeLater(doRun);
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73
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338 }
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75
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339 smList.sendToSlave(receivedCommand);
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200
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340 }
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1
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341 break;
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144
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342
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95
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343 case REP.SMCMD_CH_MASTER:
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200
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344 {
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122
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345 //maxHost を設定。
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95
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346 if(setMaxHost(channel, receivedCommand.string)){
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347 sendCommand = new REPCommand();
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348 sendCommand.setCMD(REP.SMCMD_CH_MASTER);
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349 sendCommand.setString(maxHost);
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350 smList.sendExcept(channel, sendCommand);
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351 }
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200
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352 }
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95
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353 break;
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144
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354
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213
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355 case REP.REPCMD_DELETE:
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356 case REP.REPCMD_INSERT:
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164
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357 {
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144
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358 //sid から Session を取得
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158
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359 Session session = getSession(receivedCommand.sid);
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144
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360 //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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361 session.translate(channel, receivedCommand);
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164
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362
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178
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363
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167
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364 Editor editor = session.getEditor(channel);
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365 Editor prevEditor = session.getPrevEditor(editor);
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366
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201
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367 //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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368 if(editor.isMerging()){
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369 //Handlerを切り替える
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167
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370 setMergeState(prevEditor.getChannel(), session.getSID());
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169
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371 }else {
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178
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372 setNormalState(prevEditor.getChannel(), session.getSID());
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164
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373 }
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374 }
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144
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375 break;
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213
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376
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377 default:
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|
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378 assert(false);
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|
|
379 break;
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380
|
|
144
|
381 }
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|
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382 }
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|
383
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212
|
384 private void guiUpdate() {
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|
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385 //リストのコピーをGUIに渡す
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386 LinkedList<Session> sList = new LinkedList<Session>(sessionList);
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387 LinkedList<Editor> eList = new LinkedList<Editor>(editorList);
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388 //GUIに反映
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|
389 Runnable doRun = new DoGUIUpdate(sList, eList, gui);
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|
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390 SwingUtilities.invokeLater(doRun);
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|
|
391 }
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|
|
392
|
|
169
|
393 private void setNormalState(REPSocketChannel<REPCommand> channel, int sid) {
|
|
|
394 SelectionKey key = channel.keyFor(selector);
|
|
|
395 key.attach(new REPHandlerImpl(sid, this));
|
|
|
396 }
|
|
|
397
|
|
167
|
398 private void setMergeState(REPSocketChannel<REPCommand> channel, int sid) {
|
|
|
399 SelectionKey key = channel.keyFor(selector);
|
|
|
400 key.attach(new REPHandlerInMerge(sid, this));
|
|
164
|
401 }
|
|
|
402
|
|
160
|
403 private Editor getEditor(String hostport) {
|
|
178
|
404 for(Editor editor : editorList){
|
|
|
405 if(editor.getHost() == hostport){
|
|
|
406 return editor;
|
|
|
407 }
|
|
|
408 }
|
|
|
409 return null;
|
|
|
410 }
|
|
|
411
|
|
224
|
412 public Editor getEditor(REPSocketChannel<REPCommand> channel){
|
|
178
|
413 for(Editor editor : editorList){
|
|
|
414 if(editor.getChannel() == channel){
|
|
|
415 return editor;
|
|
|
416 }
|
|
|
417 }
|
|
160
|
418 return null;
|
|
|
419 }
|
|
|
420
|
|
144
|
421 private Session getSession(int sid) {
|
|
|
422 for(Session session : sessionList){
|
|
|
423 if(session.getSID() == sid) return session;
|
|
|
424 }
|
|
|
425 return null;
|
|
0
|
426 }
|
|
83
|
427
|
|
224
|
428 private boolean setMaxHost(REPSocketChannel<REPCommand> channel, String maxHost2) {
|
|
179
|
429 if(maxHost.compareTo(maxHost2) > 0){
|
|
|
430 return false;
|
|
|
431 }else{
|
|
|
432 maxHost = maxHost2;
|
|
|
433 return true;
|
|
|
434 }
|
|
139
|
435 }
|
|
|
436
|
|
76
|
437 private void setMyHostName(String localHostName) {
|
|
95
|
438 myHost = localHostName + temp_port;
|
|
81
|
439 if(maxHost == null) {
|
|
|
440 maxHost = myHost;
|
|
|
441 }
|
|
164
|
442 setHostToEditor(myHost);
|
|
|
443 }
|
|
|
444
|
|
|
445 private void setHostToEditor(String myHost2) {
|
|
|
446 for(Editor editor : editorList){
|
|
|
447 editor.setHost(myHost2);
|
|
|
448 }
|
|
76
|
449 }
|
|
0
|
450
|
|
|
451 public static void main(String[] args) throws InterruptedException, IOException {
|
|
191
|
452
|
|
101
|
453 int port = DEFAULT_PORT;
|
|
|
454 int port_s = DEFAULT_PORT;
|
|
113
|
455 //System.setProperty("file.encoding", "UTF-8");
|
|
82
|
456 if(args.length > 0){
|
|
39
|
457 port = Integer.parseInt(args[0]);
|
|
95
|
458 port_s = Integer.parseInt(args[1]);
|
|
0
|
459 }
|
|
95
|
460 temp_port = port;
|
|
|
461 send_port = port_s;
|
|
0
|
462 SessionManager sm = new SessionManager(port);
|
|
2
|
463 sm.openSelector();
|
|
155
|
464 sm.init(port);
|
|
191
|
465 sm.startGUI(sm);
|
|
155
|
466 sm.mainLoop();
|
|
191
|
467
|
|
0
|
468 }
|
|
|
469
|
|
191
|
470 private void startGUI(SessionManager sm) {
|
|
222
|
471 gui = new SessionManagerGUI();
|
|
83
|
472 Thread th = new Thread( gui );
|
|
2
|
473 th.start();
|
|
222
|
474 gui.addREPActionListener(this);
|
|
2
|
475 }
|
|
|
476
|
|
178
|
477 public void connectSession(String host) {
|
|
101
|
478 int port = DEFAULT_PORT;
|
|
95
|
479 port = send_port;
|
|
1
|
480 InetSocketAddress addr = new InetSocketAddress(host, port);
|
|
|
481 try {
|
|
186
|
482 REPSocketChannel<REPCommand> sessionchannel = REPSocketChannel.<REPCommand>create(new REPCommandPacker());
|
|
1
|
483 sessionchannel.configureBlocking(true);
|
|
|
484 sessionchannel.connect(addr);
|
|
6
|
485 while(!sessionchannel.finishConnect()){
|
|
77
|
486 System.out.print("test afro");
|
|
6
|
487 }
|
|
|
488 System.out.println("");
|
|
2
|
489 registerChannel(selector, sessionchannel, SelectionKey.OP_READ);
|
|
45
|
490
|
|
77
|
491 sm_join(sessionchannel);
|
|
45
|
492
|
|
1
|
493 }catch (IOException e) {
|
|
|
494 e.printStackTrace();
|
|
|
495 }
|
|
|
496 }
|
|
77
|
497
|
|
164
|
498 private void sm_join(REPSocketChannel<REPCommand> channel){
|
|
79
|
499
|
|
122
|
500 //SM_JOINコマンドを生成。
|
|
77
|
501 REPCommand command = new REPCommand();
|
|
|
502 command.setCMD(REP.SMCMD_SM_JOIN);
|
|
79
|
503
|
|
122
|
504 //hostnameをセット。
|
|
82
|
505 setMyHostName(getLocalHostName(channel));
|
|
|
506
|
|
122
|
507 //XMLを生成。送信コマンドにセット。
|
|
164
|
508 SessionXMLEncoder encoder = new SessionXMLEncoder(sessionList);
|
|
77
|
509 String string = encoder.sessionListToXML();
|
|
|
510 command.setString(string);
|
|
|
511
|
|
122
|
512 //SM_JOINコマンドを送信。
|
|
186
|
513 channel.write(command);
|
|
122
|
514 //SessionManagerのListに追加。
|
|
77
|
515 smList.add(channel);
|
|
|
516 }
|
|
2
|
517
|
|
139
|
518 private String getLocalHostName(REPSocketChannel channel) {
|
|
74
|
519 String host = null;
|
|
|
520 host = channel.socket().getLocalAddress().getHostName();
|
|
|
521 return host;
|
|
|
522 }
|
|
|
523
|
|
222
|
524 // public void connectionOccured(SessionManagerEvent event) {
|
|
|
525 // try {
|
|
|
526 // waitingQueue.put(event);
|
|
|
527 // } catch (InterruptedException e) {
|
|
|
528 // }
|
|
|
529 // selector.wakeup();
|
|
|
530 // }
|
|
|
531 //
|
|
|
532 // public void selectOccured(SessionManagerEvent event) {
|
|
|
533 // try {
|
|
|
534 // waitingQueue.put(event);
|
|
|
535 // } catch (InterruptedException e) {
|
|
|
536 // e.printStackTrace();
|
|
|
537 // }
|
|
|
538 // selector.wakeup();
|
|
|
539 // }
|
|
8
|
540
|
|
222
|
541 public void selectSession(SelectButtonEvent event) {
|
|
163
|
542 REPSocketChannel<REPCommand> channel = event.getEditorChannel();
|
|
107
|
543 int sid = event.getSID();
|
|
164
|
544 Session session = getSession(sid);
|
|
222
|
545 //selector.wakeup();
|
|
158
|
546 if(session.hasOwner()){
|
|
148
|
547 Editor editor = new Editor(channel);
|
|
|
548 session.addEditor(new Editor(channel));
|
|
107
|
549 REPCommand sendCommand = new REPCommand();
|
|
|
550 sendCommand.setCMD(REP.SMCMD_JOIN_ACK);
|
|
148
|
551 sendCommand.setEID(editor.getEID());
|
|
107
|
552 sendCommand.setSID(sid);
|
|
186
|
553 channel.write(sendCommand);
|
|
107
|
554 }else {
|
|
164
|
555 REPSocketChannel<REPCommand> editorChannel = event.getEditorChannel();
|
|
107
|
556 sid = event.getSID();
|
|
|
557 Editor editor = new Editor(editorChannel);
|
|
|
558 editor.setHost(myHost);
|
|
164
|
559 session = getSession(sid);
|
|
107
|
560 session.addEditor(editor);
|
|
|
561
|
|
158
|
562 Editor owner = session.getOwner();
|
|
107
|
563
|
|
|
564 REPCommand command = new REPCommand();
|
|
|
565 command.setCMD(REP.SMCMD_SELECT);
|
|
|
566 command.setSID(sid);
|
|
178
|
567 command.setString(editor.getHost());
|
|
107
|
568 owner.send(command);
|
|
|
569 }
|
|
8
|
570 }
|
|
122
|
571
|
|
144
|
572 public void addWaitingCommand(PacketSet set) {
|
|
212
|
573 waitingCommandInMerge.add(set);
|
|
144
|
574 }
|
|
148
|
575
|
|
185
|
576 public List<Session> getSessionList() {
|
|
|
577 return sessionList;
|
|
|
578 }
|
|
|
579
|
|
|
580 public List<Editor> getEditorList() {
|
|
|
581 return editorList;
|
|
|
582 }
|
|
|
583
|
|
222
|
584 public void buttonPressed(SessionManagerEvent event) {
|
|
|
585 try {
|
|
|
586 waitingQueue.put(event);
|
|
|
587 } catch (InterruptedException e) {}
|
|
|
588 selector.wakeup();
|
|
|
589
|
|
|
590 }
|
|
|
591
|
|
0
|
592 }
|
