Mercurial > hg > RemoteEditor > REPSessionManager

annotate rep/handler/Forwarder.java @ 399:19705f4b8015

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waitingCommandInMerge
author one
date Mon, 24 Nov 2008 23:11:51 +0900
parents 4b535bef903a
children 2cf5392b2a9f
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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
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5 import rep.PacketSet;
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6 import rep.REP;
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7 import rep.REPCommand;
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8 import rep.Session;
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9 import rep.SessionManager;
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10 import rep.channel.REPLogger;
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11 import rep.channel.REPSelectionKey;
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12 import rep.channel.REPSocketChannel;
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13
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14 /**
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15 * @author kono
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16 * Forward Editor Command to the other Session Manager
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17 * Basic send API is supported.
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18 */
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19 public class Forwarder extends REPNode {
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20 int seq = 0;
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21 // REPCommands we sent to the next editor
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22 final int limit=100; // debugging purpose, assert check only
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23 final REPLogger ns = REPLogger.singleton();
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24
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25 public Forwarder(SessionManager manager,
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26 REPSocketChannel<REPCommand> channel) {
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27 super(manager,channel);
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28 }
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29
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30 public Forwarder(int editorNo, SessionManager manager,
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31 REPSocketChannel<REPCommand> channel) {
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32 super(editorNo,manager,channel);
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33 }
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34
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35 public int seq() {
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36 return seq++;
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37 }
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38
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39 @Override
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40 public void send(REPCommand command) {
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41 assert(command!=null);
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42 assert(channel!=null);
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43 REPCommand c = new REPCommand(command);
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44 manager.addWriteQueue(new PacketSet(channel,null, c));
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45 }
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46
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47 public void sendWithSeq(REPCommand command) {
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48 assert(command!=null);
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49 assert(channel!=null);
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50 REPCommand c = new REPCommand(command);
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51 c.setSEQID(seq());
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52 manager.addWriteQueue(new PacketSet(channel,null, c));
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53 }
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54
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55 public REPSocketChannel<REPCommand> getChannel() {
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56 return channel;
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57 }
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58
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59 public void setChannel(REPSocketChannel<REPCommand> channel) {
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60 this.channel = channel;
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61 }
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62
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63 public void setQuit2(REPCommand cmd) {
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64 send(cmd);
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65 }
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66
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67 public void setNext(Forwarder next) {
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68 this.next = next;
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69 }
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70
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71 public REPNode getNextForwarder() {
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72 return next;
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73 }
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74
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75 public boolean manage(REPCommand command) {
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76 assert false;
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77 return true;
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78 }
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79
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80 public String toString(){
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81 return ("Forwarder:" + channel);
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82 }
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83
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84 public String getLocalHostName() {
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85 return channel.getLocalHostName();
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86 }
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87
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88 @Override
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89 public void cancel(REPSocketChannel<REPCommand> socketChannel) {
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90 manager.remove(socketChannel);
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91 }
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92
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93 @Override
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94 public void handle(REPCommand command, REPSelectionKey<REPCommand> key) throws IOException {
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95 assert false;
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96 }
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97
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98
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99 public boolean isMerging() {
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100 return false;
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101 }
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102
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103 /*
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104 * Connect to the session which has a active connection (forwarder or
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105 * editor)
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106 */
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107 public void selectSession(REPCommand sendCommand,Session session) {
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108 // we have a selected session.
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109 if (isDirect()&&getEID()==sendCommand.eid) {
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110 // Found directly connected joined editor. Send join_ack().
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111 // we have one more point to send JOIN_ACK to the editor.
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112 session.addForwarder(this);
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113 joinAck(sendCommand, session.getSID());
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114 } else {
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115 // We have a session, but joined editor is on the other sm.
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116 // SELECT_ACK is sent to the session ring to
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117 // find out the joined editor to send JOIN_ACK.
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118 sendCommand.setCMD(REP.SMCMD_SELECT_ACK);
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119 }
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120 sendCommand.string = session.getName();
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121 send(sendCommand);
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122
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123 }
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124
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125 @Override
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126 public void joinAck(REPCommand sendCommand, int sid) {
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127 manager.sendUpdate(sid);
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128 sendCommand.setCMD(REP.SMCMD_JOIN_ACK);
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129 if (manager.sync) {
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130 REPCommand sync = new REPCommand(sendCommand);
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131 sync.setCMD(REP.SMCMD_SYNC);
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132 sendSync(sync);
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133 }
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134 }
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135
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136 @Override
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137 public void forwardedCommandManage(REPCommand command) {
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138
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139 }
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140
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141 @Override
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142 public void checkWaitingCommandInMerge() {
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143
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144 }
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149
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150 }