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1 package test.sematest;
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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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285
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5 import java.nio.channels.SelectionKey;
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6 import java.util.LinkedList;
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193
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7
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8 import rep.REP;
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9 import rep.REPCommand;
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10 import rep.REPCommandPacker;
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11 import rep.channel.REPLogger;
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308
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12 import rep.channel.REPSelectionKey;
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285
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13 import rep.channel.REPSelector;
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193
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14 import rep.channel.REPSocketChannel;
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284
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15 import test.Text;
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16
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17
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297
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18 /**
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19 * @author kono
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20 * Basic Temote Editor client implementation
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21 * should support multi-session
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22 * currently multi-session requires new channel, that is
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23 * only one session for this editor.
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24 */
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193
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25 public class TestEditor extends Thread{
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284
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26 private InetSocketAddress semaIP;
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27 private REPLogger ns;
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284
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28 private int seq = 0;
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29 public Text text;
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285
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30 public LinkedList<REPCommand> cmds;
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286
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31 private int eid = 0;
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32 private int sid = 0;
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33 REPSocketChannel<REPCommand> channel;
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315
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34 REPCommand nop = new REPCommand(REP.REPCMD_NOP, 0, 0, 0, 0, "");
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35 boolean running = true;
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36 long timeout = 1;
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37 private String name;
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298
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38 private boolean inputLock=false;
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39 public boolean detached=false;
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40 public boolean master=false;
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41 REPCommand quit=null;
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42 private int syncCounter=0;
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334
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43 private boolean hasInputLock=false;
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44 private int port;
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45 private REPSelector<REPCommand> selector;
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46 private boolean syncEnable=false;
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47
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48
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49 public TestEditor(String name, String _host,int _port, boolean master){
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193
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50 super(name);
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51 LinkedList<REPCommand>cmdList = new LinkedList<REPCommand>();
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52 String[] txts = {
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386
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53 "aaa", "bbb", // "ccc", "ddd", "eee",
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303
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54 };
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55 port = _port;
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56 semaIP = new InetSocketAddress(_host, _port);
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57 ns = REPLogger.singleton();
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58 this.name = name;
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59 cmds = cmdList;
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60 if (master) {
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61 this.master=true;
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62 text = new Text(txts);
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63 cmds.add(new REPCommand(REP.SMCMD_PUT,0,0,0,0,name+"-file"));
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64 //cmds.add(new REPCommand(REP.REPCMD_INSERT,0,0,0,0,"m0"));
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333
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65 cmds.add(new REPCommand(REP.REPCMD_DELETE,0,0,0,0,"m0"));
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66 //cmds.add(new REPCommand(REP.SMCMD_QUIT,0,0,0,0,""));
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67 } else {
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68 text = new Text(new String[0]);
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69 cmds.add(new REPCommand(REP.SMCMD_JOIN,0,0,0,0,name));
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70 cmds.add(new REPCommand(REP.REPCMD_INSERT,0,0,0,0,"c0"));
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71 //cmds.add(new REPCommand(REP.REPCMD_DELETE,0,0,0,0,"c0"));
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72 }
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73 }
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74
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75 public TestEditor(String name, String _host,int _port, boolean master,
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76 String[] txts,LinkedList<REPCommand> cmdList){
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77 super(name);
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78 port = _port;
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79 semaIP = new InetSocketAddress(_host, _port);
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80 ns = REPLogger.singleton();
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81 this.name = name;
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82 cmds = cmdList;
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83 if (master) {
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84 this.master=true;
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85 text = new Text(txts);
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386
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86 } else {
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87 text = new Text(new String[0]);
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88 }
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89 }
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90
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91 public void run(){
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302
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92 /*
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93 * Create Socket and connect to the session manager
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94 */
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95 try {
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96 channel = REPSocketChannel.<REPCommand>create(new REPCommandPacker());
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285
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97 } catch (IOException e) { return; }
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98
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99 ns.writeLog("try to connect to SessionManager whose ip is "+semaIP+" "+name, 1);
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100 try {
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101 while (!channel.connect(semaIP)){
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102 ns.writeLog("SeMa not listen to socket yet, wait", 1);
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103 }
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104 } catch (IOException e) { return; }
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105 ns.writeLog("successes to connect "+name);
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106 /*
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107 * Start editor main loop
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108 * public REPCommand(REP cmd,int sid,int eid, int seq, int lineno, String string)
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109 */
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110 try {
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111 mainloop();
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112 } catch (IOException e) {
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113 }
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114 }
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115
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116 /*
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117 * Editor main loop with input lock
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118 */
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119 private void mainloop() throws IOException {
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120
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121 channel.configureBlocking(false);
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122 REPSelector<REPCommand> selector = REPSelector.create();
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123 channel.register(selector, SelectionKey.OP_READ);
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124 this.selector = selector;
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125 while(running) {
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126 if (inputLock) {
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127 // No user input during merge mode (optional)
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128 if (selector.select(0)>0) {
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129 handle(channel.read());
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130 }
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131 continue;
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132 } else if (selector.select(timeout)<=0) {
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133 if (syncCounter>0) {
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134 syncText(); // send the master editor buffer to clients.
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135 }
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136 userInput();
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137 }
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138 // selector(timeout) returns 0, but it may contain readable channel..
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139 for(REPSelectionKey<REPCommand> key : selector.selectedKeys1()) {
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140 REPSocketChannel<REPCommand> ch = key.channel1();
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141 handle(ch.read());
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142 }
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143 }
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144 }
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145
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146 private void syncText() {
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147 /*
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148 * Send delete/insert one at a time to synchronize
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149 * all clients. SYNC is requested by the session manager.
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150 */
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300
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151 if (syncCounter>text.size()) {
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152 syncCounter=0;
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153 } else {
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154 int i=syncCounter-1;
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155 REPCommand del = new REPCommand(REP.REPCMD_DELETE,sid,eid,0,i, text.get(i));
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156 REPCommand ins = new REPCommand(REP.REPCMD_INSERT,sid,eid,0,i, text.get(i));
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157 sendCommand(del);
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158 sendCommand(ins);
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300
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159 syncCounter++;
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160 }
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161 }
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162
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302
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163 /*
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164 * Simulate User Input
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165 */
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288
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166 private void userInput() {
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167 REPCommand cmd = cmds.poll();
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168 if (cmd!=null) {
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169 switch(cmd.cmd) {
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170 case REPCMD_INSERT:
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171 text.insert(cmd.lineno, cmd.string);
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172 sendCommand(cmd);
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173 break;
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174 case REPCMD_DELETE:
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175 String del = text.delete(cmd.lineno);
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176 cmd.setString(del);
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177 sendCommand(cmd);
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178 break;
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179 case SMCMD_QUIT:
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302
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180 /*
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181 * start termination phase 1 by the master editor.
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182 * after this command do not send any user input.
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183 * clients simply disconnect from the session manager.
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184 */
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185 cmds.clear();
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186 quit = cmd;
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187 break;
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188 case SMCMD_JOIN:
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189 case SMCMD_PUT:
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190 sendCommand(cmd);
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302
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191 /*
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192 * To prevent confusion, stop user input until the ack
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193 */
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194 inputLock = true; // wait until ACK
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195 break;
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196 default:
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197 assert(false);
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198 }
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199 } else {
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200 if(syncCounter==0) {
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201 // no more command to send, and we don't have syncCounter
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202 timeout = 0;
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203 if (quit!=null) {
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204 sendCommand(quit);
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205 quit=null;
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206 }
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207 }
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208 }
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209 }
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210
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211
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212 private void sendCommand(REPCommand cmd1) {
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213 REPCommand cmd = new REPCommand(cmd1);
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214 cmd.setSEQID(seq++);
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215 cmd.setEID(eid);
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216 cmd.setSID(sid);
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217 ns.writeLog(name +" send "+cmd);
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218 channel.write(cmd);
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219 }
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220
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315
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221 private void forwardCommand(REPCommand cmd1) {
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222 REPCommand cmd = new REPCommand(cmd1);
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223 ns.writeLog(name +" forward "+cmd);
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224 channel.write(cmd);
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225 }
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226
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227 private void handle(REPCommand cmd) {
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228 if (cmd==null) return;
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229 ns.writeLog(name +": read "+cmd);
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230 switch(cmd.cmd) {
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297
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231 case REPCMD_INSERT :
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232 text.insert(cmd.lineno, cmd.string);
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233 forwardCommand(cmd);
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234 break;
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235 case REPCMD_DELETE :
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236 String del="";
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237 if(cmd.lineno>text.size()) {
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238 del = text.delete(cmd.lineno);
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239 }
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240 cmd.setString(del);
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315
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241 forwardCommand(cmd);
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242 break;
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313
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243 case REPCMD_NOP :
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395
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244 case REPCMD_INSERT_ACK :
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245 case REPCMD_DELETE_ACK :
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315
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246 forwardCommand(cmd);
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387
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247 break;
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248 case REPCMD_CLOSE :
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286
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249 case REPCMD_CLOSE_2 :
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298
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250 assert(false);
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251 break;
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252
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286
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253 case SMCMD_JOIN_ACK :
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254 sid = cmd.sid;
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255 eid = cmd.eid;
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328
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256 name += "(eid="+eid+",sid="+sid+")";
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300
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257 inputLock = false;
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258 break;
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259 case SMCMD_PUT_ACK :
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260 sid = cmd.sid;
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261 eid = cmd.eid;
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262 name += "(eid="+eid+",sid="+sid+")";
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263 inputLock = false;
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264 break;
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265 case SMCMD_QUIT :
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266 if (cmd.eid!=eid)
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267 forwardCommand(cmd);
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268 else
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269 sendCommand(new REPCommand(REP.SMCMD_QUIT_2,
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270 sid, eid, seq, 0, ""));
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271 // stop input processing after this command
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272 cmds.clear();
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273 break;
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286
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274 case SMCMD_START_MERGE :
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275 // lock user input during merge (optional)
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276 inputLock = hasInputLock;
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277 cmd.cmd = REP.SMCMD_START_MERGE_ACK;
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278 sendCommand(cmd);
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279 break;
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286
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280 case SMCMD_END_MERGE :
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281 inputLock = false;
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286
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282 break;
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283 case SMCMD_QUIT_2 :
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284 if (cmd.eid!=eid) {
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315
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285 forwardCommand(cmd);
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286 } else {
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287 cmd.cmd = REP.SMCMD_QUIT_2_ACK;
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288 sendCommand(cmd);
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289 }
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290 running = false;
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291 break;
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298
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292 case SMCMD_SYNC:
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293 // start contents sync with newly joined editor
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315
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294 cmd.cmd = REP.SMCMD_SYNC_ACK;
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295 forwardCommand(cmd);
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386
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296 //if (cmd.eid==eid) {
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297 if (master && syncEnable ) {
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298 syncCounter = 1;
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386
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299 timeout = 1;
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300 }
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298
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301 break;
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302 default:
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303 assert(false);
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304 break;
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285
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305 }
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284
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306 }
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313
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307
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334
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308
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309 public int getPort() {
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310 return port;
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311 }
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342
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312
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313 public synchronized void setCommand(LinkedList<REPCommand> cmds) {
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314 this.cmds = cmds;
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315 timeout=1;
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316 if(selector!=null) selector.wakeup();
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317 }
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193
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318 }
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