Mercurial > hg > blitz_stable

annotate src/org/dancres/blitz/tools/HotBackup.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>Triggers a backup to the specified directory which must be available to
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31 the machine on which the Blitz instance is running.</p>
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32
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33 <p>Arguments are directory and spacename or directory, LUS host and
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34 spacename</p>
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35
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36 @see org.dancres.blitz.remote.BlitzAdmin
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37 */
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38 public class HotBackup {
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39 private static final long MAX_DISCOVER_TIME = 15 * 1000;
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40
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41 public static void main(String args[]) {
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42 if (System.getSecurityManager() == null)
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43 System.setSecurityManager(new RMISecurityManager());
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44
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45 try {
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46 try {
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47 Object myProxy = null;
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48
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49 if (args.length == 2)
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50 myProxy = ServiceLocator.getService(JavaSpace.class,
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51 args[1],
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52 MAX_DISCOVER_TIME);
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53 else if (args.length == 3) {
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54 myProxy = ServiceLocator.getService(args[1],
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55 JavaSpace.class,
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56 args[2]);
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57 } else {
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58 System.err.println("Wrong number of arguments - should be <dir> <spacename> or <dir> <LUS host> <spacename>");
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59 System.exit(-1);
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60 }
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61
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62 String myDir = args[0];
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63
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64 if (myProxy != null) {
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65 System.err.println("Found space: " + myProxy);
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66
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67 DiscoveryUtil.dumpInterfaces(myProxy.getClass());
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68
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69 if (DiscoveryUtil.hasInterface(myProxy,
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70 Administrable.class)) {
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71 Administrable myAdmin = (Administrable) myProxy;
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72
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73 Object myAdminProxy = myAdmin.getAdmin();
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74
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75 DiscoveryUtil.dumpInterfaces(myAdminProxy.getClass());
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76
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77 if (DiscoveryUtil.hasInterface(myAdminProxy,
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78 BlitzAdmin.class)) {
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79 BlitzAdmin myBlitzAdmin =
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80 (BlitzAdmin) myAdminProxy;
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81
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82 try {
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83 System.err.println("Invoking backup to: " +
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84 myDir);
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85 myBlitzAdmin.backup(myDir);
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86 } catch (Exception aE) {
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87 System.err.println("Failed to backup");
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88 aE.printStackTrace(System.err);
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89 System.exit(-1);
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90 }
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91 } else {
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92 System.err.println("No BlitzAdmin interface found - can't be Blitz");
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93 }
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94 } else {
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95 System.err.println("No admin interface present - can't be Blitz");
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96 }
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97 }
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98 } catch (InterruptedException anIE) {
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99 System.err.println("!!! Whoops service not found :( !!!");
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100 }
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101 } catch (ClassNotFoundException aCNFE) {
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102 System.err.println("ClassNotFound exception");
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103 aCNFE.printStackTrace(System.err);
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104 } catch (RemoteException anRE) {
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105 System.err.println("Remote exception");
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106 anRE.printStackTrace(System.err);
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107 } catch (IOException anIOE) {
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108 System.err.println("Failed to configure discovery");
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109 anIOE.printStackTrace(System.err);
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110 }
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111 }
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112 }