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annotate src/org/dancres/blitz/tools/RequestReap.java @ 35:6f68e94c1fb8 default tip

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Add CondensedStats monitoring utility, equivalent to vmstat
author Dominic Cleal <dominic-cleal@cdo2.com>
date Thu, 05 Aug 2010 11:07:25 +0100
parents 3dc0c5604566
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0
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1 package org.dancres.blitz.tools;
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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 java.rmi.RemoteException;
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6 import java.rmi.RMISecurityManager;
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7
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8 import net.jini.discovery.*;
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9
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10 import net.jini.lookup.*;
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11 import net.jini.lookup.entry.Name;
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12
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13 import net.jini.core.lookup.ServiceItem;
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14 import net.jini.core.lookup.ServiceTemplate;
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15
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16 import net.jini.core.entry.Entry;
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17
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18 import net.jini.admin.Administrable;
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19
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20 import net.jini.space.JavaSpace;
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21
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22 import net.jini.core.transaction.TransactionException;
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23
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24 import org.dancres.blitz.remote.BlitzAdmin;
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25
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26 import org.dancres.jini.util.DiscoveryUtil;
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27 import org.dancres.jini.util.ServiceLocator;
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28
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29 /**
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30 <p>RequestReap accepts a spacename as an argument and attempts to
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31 trigger a manual reap of any lease expired contents.</p>
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32
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33 <p>Typical usage:
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34
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35 <pre>
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36 java -Xmx256m -Djava.security.policy=config/policy.all
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37 -classpath /home/dan/jini/jini2_0/lib/jsk-platform.jar:/home/dan/src/jini/space/build:/home/dan/jini/jini2_0/lib/jini-ext.jar:/home/dan/jini/jini2_0/lib/sun-util.jar
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38 org.dancres.blitz.tools.RequestReap dancres
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39 </pre>
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40
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41 @see org.dancres.blitz.remote.BlitzAdmin
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42 */
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43 public class RequestReap {
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44 private static final long MAX_DISCOVER_TIME = 15 * 1000;
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45
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46 public static void main(String args[]) {
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47 if (System.getSecurityManager() == null)
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48 System.setSecurityManager(new RMISecurityManager());
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49
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50 try {
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51 try {
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52 Object myProxy = null;
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53
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54 if (args.length == 1)
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55 myProxy = ServiceLocator.getService(JavaSpace.class,
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56 args[0],
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57 MAX_DISCOVER_TIME);
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58 else if (args.length == 2) {
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59 myProxy = ServiceLocator.getService(args[0],
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60 JavaSpace.class,
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61 args[1]);
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62 } else {
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63 System.err.println("Wrong number of arguments - should be <spacename> or <LUS host> <spacename>");
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64 System.exit(-1);
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65 }
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66
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67 if (myProxy != null) {
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68 System.err.println("Found space: " + myProxy);
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69
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70 DiscoveryUtil.dumpInterfaces(myProxy.getClass());
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71
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72 if (DiscoveryUtil.hasInterface(myProxy,
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73 Administrable.class)) {
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74 Administrable myAdmin = (Administrable) myProxy;
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75
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76 Object myAdminProxy = myAdmin.getAdmin();
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77
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78 DiscoveryUtil.dumpInterfaces(myAdminProxy.getClass());
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79
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80 if (DiscoveryUtil.hasInterface(myAdminProxy,
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81 BlitzAdmin.class)) {
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82 BlitzAdmin myBlitzAdmin =
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83 (BlitzAdmin) myAdminProxy;
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84
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85 System.err.println("Invoking reap");
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86 myBlitzAdmin.reap();
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87 } else {
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88 System.err.println("No BlitzAdmin interface found - can't be Blitz");
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89 }
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90 } else {
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91 System.err.println("No admin interface present - can't be Blitz");
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92 }
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93 }
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94 } catch (InterruptedException anIE) {
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95 System.err.println("!!! Whoops service not found :( !!!");
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96 }
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97 } catch (ClassNotFoundException aCNFE) {
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98 System.err.println("ClassNotFound exception");
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99 aCNFE.printStackTrace(System.err);
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100 } catch (RemoteException anRE) {
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101 System.err.println("Remote exception");
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102 anRE.printStackTrace(System.err);
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103 } catch (IOException anIOE) {
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104 System.err.println("Failed to configure discovery");
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105 anIOE.printStackTrace(System.err);
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106 }
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107 }
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108 }