Mercurial > hg > blitz_stable
annotate src/org/dancres/blitz/remote/nio/Server.java @ 0:3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 21 Mar 2009 11:00:06 +0000 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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1 package org.dancres.blitz.remote.nio; |
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2 |
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3 import org.dancres.blitz.SpaceImpl; |
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4 |
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5 import java.net.ServerSocket; |
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6 import java.net.Socket; |
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7 import java.net.InetSocketAddress; |
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8 import java.io.IOException; |
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9 import java.nio.channels.SelectionKey; |
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10 import java.nio.channels.Selector; |
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11 import java.nio.channels.SocketChannel; |
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12 import java.nio.channels.ServerSocketChannel; |
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13 |
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14 /** |
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15 * To make this scale we would have multiple selectors each serviced by a |
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16 * separate event processor thread. That's way easier than trying to handle |
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17 * multiple threads doing selects on the same selector. Each processor |
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18 * thread would handle IO transfer into ControlBlock which would then figure |
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19 * out when to dispatch a request into the thread pool for execution. |
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20 * We'd also need to pass over the SocketChannel or whatever so the worker |
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21 * knows where to post the response to. Probably the best thing is to pass |
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22 * the selection key so that we can set it for write and post the data to write |
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23 * into the control block. When the control block sees no more data to write |
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24 * it clears down that setting on the selection key. |
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25 */ |
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26 public class Server implements Runnable { |
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27 private InetSocketAddress _address; |
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28 private ServerSocketChannel _rootSocket; |
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29 private Thread _acceptor; |
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30 private Selector _selector; |
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31 private EventProcessor _processor; |
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32 |
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33 /** |
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34 * Warning: Do not use more than one selector, not thread safe yet |
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35 */ |
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36 public Server(InetSocketAddress anAddr, |
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37 DispatcherFactory aFactory) throws IOException { |
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38 _address = anAddr; |
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39 _rootSocket = ServerSocketChannel.open(); |
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40 |
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41 _rootSocket.socket().bind(anAddr); |
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42 |
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43 _acceptor = new Thread(this, "Selector"); |
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44 _selector = Selector.open(); |
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45 _processor = new EventProcessor(_selector, aFactory); |
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46 _processor.start(); |
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47 _acceptor.start(); |
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48 } |
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49 |
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50 public FastSpace getEndpoint() { |
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51 return new Invoker(new InetSocketAddress(_address.getAddress(), |
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52 _rootSocket.socket().getLocalPort())); |
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53 } |
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54 |
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55 public void run() { |
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56 while (true) { |
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57 try { |
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58 SocketChannel mySocket = _rootSocket.accept(); |
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59 |
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60 // System.err.println("Connection received: " + mySocket); |
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61 _processor.add(mySocket); |
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62 } catch (IOException anIOE) { |
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63 System.err.println("Error during accept"); |
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64 anIOE.printStackTrace(System.err); |
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65 } |
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66 } |
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67 } |
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68 |
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69 public static void main(String args[]) { |
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70 try { |
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71 |
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72 SpaceImpl mySpace = new SpaceImpl(null); |
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73 |
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74 new Server(new InetSocketAddress(12345), |
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75 new DispatcherFactoryImpl(mySpace)); |
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76 |
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77 } catch (Exception anE) { |
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78 System.err.println("Server error"); |
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79 anE.printStackTrace(System.err); |
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80 } |
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81 } |
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82 } |