Mercurial > hg > blitz_condensed
annotate src/org/dancres/blitz/remote/transport/ServerSessionHandler.java @ 28:4b2f23b6feca
Add a schema compatibility check to indexer that parallels storage.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 12 Jun 2010 10:11:15 +0100 |
parents | 3dc0c5604566 |
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0
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1 package org.dancres.blitz.remote.transport; |
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2 |
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3 import java.rmi.RemoteException; |
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4 |
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5 import org.dancres.blitz.SpaceImpl; |
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6 import org.dancres.blitz.remote.transport.task.ReadTask; |
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7 import org.dancres.blitz.remote.transport.task.TakeTask; |
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8 import org.dancres.blitz.remote.transport.task.WriteTask; |
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9 import edu.emory.mathcs.backport.java.util.concurrent.Executor; |
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10 import edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor; |
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11 import edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue; |
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12 import edu.emory.mathcs.backport.java.util.concurrent.TimeUnit; |
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13 import org.apache.mina.common.IdleStatus; |
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14 import org.apache.mina.common.IoHandlerAdapter; |
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15 import org.apache.mina.common.IoSession; |
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16 import org.apache.mina.util.SessionLog; |
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17 |
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18 /** |
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19 */ |
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20 public class ServerSessionHandler extends IoHandlerAdapter { |
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21 private static final boolean STRAIGHT_THROUGH = true; |
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22 |
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23 private Executor _executor = |
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24 new ThreadPoolExecutor(1, 16, 60, TimeUnit.SECONDS, |
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25 new LinkedBlockingQueue()); |
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26 |
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27 private SpaceImpl _space; |
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28 |
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29 ServerSessionHandler(SpaceImpl aSpace) { |
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30 _space = aSpace; |
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31 } |
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32 |
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33 public void sessionOpened(IoSession session) { |
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34 // set idle time to 60 seconds |
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35 session.setIdleTime(IdleStatus.BOTH_IDLE, 60); |
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36 } |
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37 |
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38 public void messageReceived(IoSession session, Object message) { |
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39 Message myMessage = (Message) message; |
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40 |
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41 int myConversationId = myMessage.getConversationId(); |
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42 |
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43 // System.err.println("Received request with: " + myConversationId); |
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44 |
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45 try { |
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46 Object myRequest = MarshallUtil.unmarshall(myMessage); |
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47 |
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48 // System.err.println("Request type: " + myRequest.getClass()); |
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49 |
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50 if (STRAIGHT_THROUGH) { |
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51 if (myRequest instanceof Write) { |
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52 new WriteTask(myConversationId, _space, |
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53 (Write) myRequest, session).run(); |
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54 } else if (myRequest instanceof Take) { |
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55 new TakeTask(myConversationId, _space, |
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56 (Take) myRequest, session).run(); |
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57 } else if (myRequest instanceof Read) { |
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58 new ReadTask(myConversationId, _space, |
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59 (Read) myRequest, session).run(); |
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60 } else if (myRequest instanceof Ping) { |
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61 // System.err.println("ping"); |
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62 } |
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63 } else { |
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64 if (myRequest instanceof Write) { |
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65 _executor.execute( |
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66 new WriteTask(myConversationId, _space, |
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67 (Write) myRequest, session)); |
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68 } else if (myRequest instanceof Take) { |
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69 _executor.execute( |
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70 new TakeTask(myConversationId, _space, |
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71 (Take) myRequest, session)); |
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72 } else if (myRequest instanceof Read) { |
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73 _executor.execute( |
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74 new ReadTask(myConversationId, _space, |
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75 (Read) myRequest, session)); |
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76 } else if (myRequest instanceof Ping) { |
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77 // System.err.println("ping"); |
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78 } |
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79 } |
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80 |
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81 } catch (RemoteException anRE) { |
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82 try { |
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83 Message myResponse = |
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84 MarshallUtil.marshall( |
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85 new RemoteException("Server problem", anRE), |
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86 myConversationId); |
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87 session.write(myResponse); |
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88 } catch (RemoteException anREE) { |
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89 System.err.println("Couldn't post error response to client"); |
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90 anREE.printStackTrace(System.err); |
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91 } |
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92 } |
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93 } |
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94 |
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95 public void sessionIdle(IoSession session, IdleStatus status) { |
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96 SessionLog.info(session, "Disconnecting the idle."); |
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97 // disconnect an idle client |
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98 session.close(); |
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99 } |
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100 |
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101 public void exceptionCaught(IoSession session, Throwable cause) { |
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102 // close the connection on exceptional situation |
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103 session.close(); |
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104 } |
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105 } |