Mercurial > hg > RemoteEditor > REPSessionManager

annotate rep/handler/Forwarder.java @ 450:21cb16b7f3df

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block message in Editor.write()
author one
date Thu, 23 Sep 2010 18:15:37 +0900
parents 1bb59652d89c
children c83af820eb62
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 package rep.handler;
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2
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3 import java.io.IOException;
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4 import java.util.List;
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5
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6 import rep.PacketSet;
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7 import rep.REP;
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8 import rep.REPCommand;
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9 import rep.Session;
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10 import rep.SessionManager;
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11 import rep.channel.REPLogger;
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12 import rep.channel.REPSelectionKey;
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13 import rep.channel.REPSocketChannel;
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14
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15 /**
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16 * @author kono
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17 * Forward Editor Command to the other Session Manager
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18 * Basic send API is supported.
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19 */
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20 public class Forwarder extends REPNode {
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21 int seq = 0;
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22 // REPCommands we sent to the next editor
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23 final int limit=100; // debugging purpose, assert check only
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24 final REPLogger ns = REPLogger.singleton();
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25
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26 public Forwarder(SessionManager manager,
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27 REPSocketChannel<REPCommand> channel) {
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28 super(manager,channel);
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29 }
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30
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31 public Forwarder(int editorNo, SessionManager manager,
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32 REPSocketChannel<REPCommand> channel) {
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33 super(editorNo,manager,channel);
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34 }
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35
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36 public int seq() {
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37 return seq++;
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38 }
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39
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40 @Override
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41 public void send(REPCommand command) {
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42 assert(command!=null);
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43 assert(channel!=null);
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44 REPCommand c = new REPCommand(command);
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45 manager.addWriteQueue(new PacketSet(this, c));
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46 }
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47
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48 public void sendWithSeq(REPCommand command) {
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49 assert(command!=null);
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50 assert(channel!=null);
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51 REPCommand c = new REPCommand(command);
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52 c.setSEQID(seq());
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53 manager.addWriteQueue(new PacketSet(this, c));
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54 }
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55
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56 public REPSocketChannel<REPCommand> getChannel() {
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57 return channel;
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58 }
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59
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60 public void setChannel(REPSocketChannel<REPCommand> channel) {
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61 this.channel = channel;
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62 }
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63
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64 public void setQuit2(REPCommand cmd) {
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65 send(cmd);
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66 }
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67
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68 public void setNext(Forwarder next) {
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69 this.next = next;
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70 }
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71
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72 public REPNode getNextForwarder() {
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73 return next;
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74 }
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75
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76 public boolean manage(REPCommand command) {
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77 assert false;
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78 return true;
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79 }
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80
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81 public String toString(){
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82 return ("Forwarder:" + channel);
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83 }
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84
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85 public String getLocalHostName() {
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86 return channel.getLocalHostName();
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87 }
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88
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89 @Override
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90 public void cancel(REPSocketChannel<REPCommand> socketChannel) {
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91 manager.remove(socketChannel);
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92 }
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93
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94 @Override
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95 public void handle(REPCommand command, REPSelectionKey<REPCommand> key) throws IOException {
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96 assert false;
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97 }
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98
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99
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100 public boolean isMerging() {
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101 return false;
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102 }
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103
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104 /*
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105 * Connect to the session which has a active connection (forwarder or
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106 * editor)
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107 */
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108 public void selectSession(REPCommand sendCommand,Session session) {
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109 // we have a selected session.
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110 if (isDirect()&&getEID()==sendCommand.eid) {
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111 // Found directly connected joined editor. Send join_ack().
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112 // we have one more point to send JOIN_ACK to the editor.
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113 session.addForwarder(this);
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114 joinAck(sendCommand, session.getSID());
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115 return;
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116 } else {
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117 // We have a session, but joined editor is on the other sm.
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118 // SELECT_ACK is sent to the session ring to
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119 // find out the joined editor to send JOIN_ACK.
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120 sendCommand.setCMD(REP.SMCMD_SELECT_ACK);
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121 }
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122 sendCommand.string = session.getName();
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123 send(sendCommand);
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124
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125 }
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126
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127 @Override
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128 public void joinAck(REPCommand sendCommand, int sid) {
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129 manager.sendUpdate(sid);
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130 sendCommand.setCMD(REP.SMCMD_JOIN_ACK);
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131 send(sendCommand);
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132 if (manager.sync) {
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133 REPCommand sync = new REPCommand(sendCommand);
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134 sync.setCMD(REP.SMCMD_SYNC);
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135 sendSync(sync);
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136 }
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137 }
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138
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139 @Override
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140 public void forwardedCommandManage(REPCommand command) {
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141
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142 }
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143
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144 @Override
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145 public void checkWaitingCommandInMerge() {
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146
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147 }
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148
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149 @Override
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150 public List<REPCommand> getSentList() {
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151 return null;
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152 }
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153
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154 @Override
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155 public void write(REPCommand command) {
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156 channel.write(command);
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157 }
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161
bba62c4ac323 sync-option
one@firefly.cr.ie.u-ryukyu.ac.jp
parents: 385
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162
382
4b87f89b3afd REP Session Manager (Java version)
one@firefly.cr.ie.u-ryukyu.ac.jp
parents:
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163 }