peerinfobundle.java

javaP2P技术内幕课程111213141516源代码

/*
 * Created by IntelliJ IDEA.
 * User: fsommers
 * Date: Apr 28, 2002
 * Time: 5:43:50 PM
 * To change template for new class use
 * Code Style | Class Templates options (Tools | IDE Options).
 */
package primecruncher;

import net.jxta.protocol.ModuleSpecAdvertisement;
import net.jxta.protocol.PeerAdvertisement;
import net.jxta.protocol.PipeAdvertisement;
import net.jxta.peer.PeerID;
import net.jxta.pipe.PipeID;
import net.jxta.id.ID;


/**
 * Hold information about a discovered peer. Information includes:
 * peer's advertisment
 * peer's ModuleSpecAdvertisement
 * Performance Metics for the peer
 *
 * TODO: Implement persistence mechanism
 */
class PeerInfoBundle {

    private PeerAdvertisement peerAdvertisement = null;
    private ModuleSpecAdvertisement moduleSpecAdvertisement = null;
    private PeerMetrics peerMetrics = null;

    PeerInfoBundle(PeerAdvertisement adv, ModuleSpecAdvertisement mAdv) {

        this.peerAdvertisement = adv;
        this.moduleSpecAdvertisement = mAdv;
        peerMetrics = new PeerMetrics();

    }

    protected PeerAdvertisement getPeerAdvertisement() {
        return peerAdvertisement;
    }

    protected ModuleSpecAdvertisement getModuleSpecAdvertisement() {
        return moduleSpecAdvertisement;
    }

    protected PeerMetrics getPeerMetrics() {
        return peerMetrics;
    }


    /**
     * Two peer info bundles are equal if, and only if, they contain the same
     * pipe advertisement inside the module spec advertisement.
     */
    public boolean equals(Object o) {
        if (o instanceof PeerInfoBundle) {
            PeerInfoBundle b = (PeerInfoBundle)o;
            ID bPipd = b.moduleSpecAdvertisement.getPipeAdvertisement().getPipeID();
            ID ourID = moduleSpecAdvertisement.getPipeAdvertisement().getPipeID();
            return ourID.getUniqueValue().equals(bPipd.getUniqueValue());

        }
        return false;
    }

    /**
     * Return the hashCode() semantics for the pipe ID embedded in the module spec
     * advertisement.
     */
    public int hashCode() {
        return moduleSpecAdvertisement.getPipeAdvertisement().getPipeID().getUniqueValue().hashCode();
    }

    class PeerMetrics {

    }

}