| Line | Hits | Source |
|---|---|---|
| 1 | package base.jdbs.network.util; | |
| 2 | ||
| 3 | import net.jxta.discovery.DiscoveryService; | |
| 4 | import net.jxta.exception.PeerGroupException; | |
| 5 | import net.jxta.peergroup.PeerGroup; | |
| 6 | import net.jxta.peergroup.PeerGroupID; | |
| 7 | import net.jxta.protocol.ModuleImplAdvertisement; | |
| 8 | import net.jxta.protocol.PeerGroupAdvertisement; | |
| 9 | import net.jxta.rendezvous.RendezvousListener; | |
| 10 | ||
| 11 | import org.apache.log4j.Logger; | |
| 12 | ||
| 13 | 0 | public class JxtaGroupUtil { |
| 14 | ||
| 15 | 0 | private static final transient Logger logger = Logger.getLogger(JxtaGroupUtil.class.getName()); |
| 16 | ||
| 17 | /** | |
| 18 | * This method is used to join a PeerGroup authenticating our peer | |
| 19 | * on the bases of provided key store and identity passwords. It | |
| 20 | * assumes that our passwords are equals (keyStorePassword == identityPassword). | |
| 21 | * @param peerGroup The PeerGroup where we want to join. | |
| 22 | * @param keyStorePassword Our key store password. | |
| 23 | * @param identityPassword Our identity password. | |
| 24 | */ | |
| 25 | public static void joinGroup(PeerGroup peerGroup, String keyStorePassword, String identityPassword) { | |
| 26 | 0 | logger.info("Joining peer group: "+peerGroup.getPeerGroupName()+"..."); |
| 27 | 0 | if(!JxtaAuthenticationUtil.authenticate(peerGroup,keyStorePassword,identityPassword,true)){ |
| 28 | 0 | logger.error("Can't join "+peerGroup.getPeerGroupName()+"."); |
| 29 | 0 | System.exit(-1); |
| 30 | 0 | }else { |
| 31 | 0 | logger.info("Successfully joined "+peerGroup.getPeerGroupName()+"..."); |
| 32 | } | |
| 33 | 0 | } |
| 34 | ||
| 35 | /** | |
| 36 | * This method is used to create a new PeerGroup from its parent group. | |
| 37 | * @param parentGroup The parent PeerGroup from wich the new PeerGroup must be created. | |
| 38 | * @param groupName A name for the new PeerGroup to create. | |
| 39 | * @param groupDescription A description for the new PeerGroup to create. | |
| 40 | * @param autoRdv States if an auto rendezvous must be setted for the group to be created. | |
| 41 | * @param rendezVousPeriod The auto rendezvous period for the new group's rendezvous service. | |
| 42 | * @param rendezvousListener A rendezvous listener for the new peer group. | |
| 43 | * @param publish States if the created new group must be published locally and remotelly, | |
| 44 | * note that should be grant a rendezvous connection before trying to publish the new Group remotelly. | |
| 45 | * @return A new PeerGroup. | |
| 46 | */ | |
| 47 | public static PeerGroup createGroup(PeerGroup parentGroup, String groupName, String groupDescription, boolean autoRdv, int rendezVousPeriod, RendezvousListener rendezvousListener, boolean publish) { | |
| 48 | 0 | PeerGroup resultPeerGroup = null; |
| 49 | 0 | PeerGroupAdvertisement peerGroupAdvertisement = null; |
| 50 | 0 | logger.info("Creating a new group advertisement called: "+groupName); |
| 51 | try { | |
| 52 | // create a new all purpose peergroup. | |
| 53 | 0 | ModuleImplAdvertisement implAdv = parentGroup.getAllPurposePeerGroupImplAdvertisement(); |
| 54 | ||
| 55 | 0 | resultPeerGroup = parentGroup.newGroup(null,// Assign new group ID |
| 56 | 0 | implAdv, // The implem. adv |
| 57 | 0 | groupName, // The name |
| 58 | 0 | groupDescription); // Helpful descr. |
| 59 | ||
| 60 | // print the name of the group and the peer group ID | |
| 61 | 0 | peerGroupAdvertisement = resultPeerGroup.getPeerGroupAdvertisement(); |
| 62 | 0 | PeerGroupID GID = peerGroupAdvertisement.getPeerGroupID(); |
| 63 | 0 | logger.info(" Group = " +peerGroupAdvertisement.getName() + "\n Group ID = " + GID.toString()); |
| 64 | 0 | } catch (Exception ex) { |
| 65 | 0 | logger.fatal("Group "+groupName+" creation failed."); |
| 66 | 0 | ex.printStackTrace(); |
| 67 | 0 | System.exit(-1); |
| 68 | 0 | } |
| 69 | ||
| 70 | ||
| 71 | 0 | if(autoRdv){ |
| 72 | 0 | logger.info("Enabling auto rendevous for :"+groupName+"."); |
| 73 | 0 | resultPeerGroup.getRendezVousService().setAutoStart(autoRdv, rendezVousPeriod); |
| 74 | 0 | resultPeerGroup.getRendezVousService().addListener(rendezvousListener); |
| 75 | } | |
| 76 | ||
| 77 | 0 | if(publish){ |
| 78 | 0 | logger.info("Remote publishing "+groupName+"."); |
| 79 | try { | |
| 80 | // publish this advertisement (send out to other peers and rendezvous peer) | |
| 81 | 0 | parentGroup.getDiscoveryService().publish(resultPeerGroup.getPeerGroupAdvertisement()); |
| 82 | 0 | parentGroup.getDiscoveryService().publish(resultPeerGroup.getPeerAdvertisement()); |
| 83 | ||
| 84 | 0 | parentGroup.getDiscoveryService().remotePublish(resultPeerGroup.getPeerGroupAdvertisement(), DiscoveryService.GROUP); |
| 85 | 0 | parentGroup.getDiscoveryService().remotePublish(resultPeerGroup.getPeerAdvertisement(), DiscoveryService.PEER); |
| 86 | ||
| 87 | 0 | logger.info("Group published successfully."); |
| 88 | 0 | } catch (Exception ex) { |
| 89 | 0 | logger.fatal("Can't remotelly publish the group "+groupName+" ."); |
| 90 | 0 | ex.printStackTrace(); |
| 91 | 0 | System.exit(-1); |
| 92 | 0 | } |
| 93 | } | |
| 94 | 0 | return resultPeerGroup; |
| 95 | } | |
| 96 | ||
| 97 | /** | |
| 98 | * This method is used to create a PeerGroup whose name is peerGroupName from the local peer's cache.. | |
| 99 | * @param parentGroup The parent PeerGroup from wich the local cache PeerGroup must be instantiated. | |
| 100 | * @param peerGroupName The Peer Group's name to be instantiated from the local peer's cache. | |
| 101 | * @param autoRdv States if an auto rendezvous must be setted for the group to be created. | |
| 102 | * @param rendezVousPeriod The auto rendezvous period for the new group's rendezvous service. | |
| 103 | * @param rendezvousListener A rendezvous listener for the new peer group. | |
| 104 | * @param publish States if the created new group must be published locally and remotelly, | |
| 105 | * note that should be grant a rendezvous connection before trying to publish the new Group remotelly. | |
| 106 | * @return A new PeerGroup whose name is peerGroupName from the local cache, null if the local cache doesn't contains such PeerGroup. | |
| 107 | */ | |
| 108 | public static PeerGroup createGroupFromLocalCache(PeerGroup parentGroup, String peerGroupName, boolean autoRdv, int rendezVousPeriod, RendezvousListener rendezvousListener, boolean publish){ | |
| 109 | 0 | logger.info("Searching "+peerGroupName + " in the local cache..."); |
| 110 | 0 | PeerGroup resultPeerGroup = null; |
| 111 | 0 | PeerGroupAdvertisement[] localCachePGAdv = JxtaUtil.groupsInLocalCache(parentGroup.getDiscoveryService()); |
| 112 | 0 | for(int i=0;i<localCachePGAdv.length;i++){ |
| 113 | 0 | if(localCachePGAdv[i].getName().equals(peerGroupName)){ |
| 114 | try { | |
| 115 | 0 | logger.info("The specified "+peerGroupName + " has been found in the local cache. Instantiating it..."); |
| 116 | //The peer group is in our cache, lets try to instantiate it from the found advertisement. | |
| 117 | 0 | resultPeerGroup = parentGroup.newGroup(localCachePGAdv[i]); |
| 118 | 0 | break; |
| 119 | 0 | } catch (PeerGroupException ex) { |
| 120 | 0 | logger.error("can't create "+peerGroupName+" from local cache."); |
| 121 | 0 | ex.printStackTrace(); |
| 122 | } | |
| 123 | } | |
| 124 | } | |
| 125 | ||
| 126 | 0 | if(autoRdv && resultPeerGroup!=null){ |
| 127 | 0 | logger.info("Enabling auto rendevous for :"+peerGroupName+"."); |
| 128 | 0 | resultPeerGroup.getRendezVousService().setAutoStart(autoRdv, rendezVousPeriod); |
| 129 | 0 | resultPeerGroup.getRendezVousService().addListener(rendezvousListener); |
| 130 | } | |
| 131 | ||
| 132 | 0 | if(publish && resultPeerGroup!=null){ |
| 133 | 0 | logger.info("Remote publishing "+peerGroupName+"."); |
| 134 | try { | |
| 135 | // publish this advertisement (send out to other peers and rendezvous peer) | |
| 136 | 0 | parentGroup.getDiscoveryService().publish(resultPeerGroup.getPeerGroupAdvertisement()); |
| 137 | 0 | parentGroup.getDiscoveryService().publish(resultPeerGroup.getPeerAdvertisement()); |
| 138 | ||
| 139 | 0 | parentGroup.getDiscoveryService().remotePublish(resultPeerGroup.getPeerGroupAdvertisement(), DiscoveryService.GROUP); |
| 140 | 0 | parentGroup.getDiscoveryService().remotePublish(resultPeerGroup.getPeerAdvertisement(), DiscoveryService.PEER); |
| 141 | ||
| 142 | 0 | logger.info("Group published successfully."); |
| 143 | 0 | } catch (Exception ex) { |
| 144 | 0 | logger.fatal("Can't remotelly publish the group "+peerGroupName+" ."); |
| 145 | 0 | ex.printStackTrace(); |
| 146 | 0 | System.exit(-1); |
| 147 | 0 | } |
| 148 | } | |
| 149 | 0 | return resultPeerGroup; |
| 150 | } | |
| 151 | } |
|
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