vojxtainviteaction.java

jxta官方例程

/*
 * Created on Feb 25, 2005
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package net.jxta.myjxta.plugins.vojxta;

import net.jxta.document.AdvertisementFactory;
import net.jxta.document.MimeMediaType;
import net.jxta.document.StructuredDocument;
import net.jxta.document.StructuredDocumentFactory;
import net.jxta.document.StructuredTextDocument;
import net.jxta.endpoint.ByteArrayMessageElement;
import net.jxta.endpoint.MessageElement;
import net.jxta.endpoint.TextDocumentMessageElement;
import net.jxta.myjxta.View;
import net.jxta.myjxta.dialog.Dialog;
import net.jxta.myjxta.dialog.DialogManager;
import net.jxta.myjxta.dialog.DialogMessage;
import net.jxta.myjxta.dialog.util.RemoteCommandInvoker;
import net.jxta.myjxta.plugins.vojxta.command.VOJXTACommand;
import net.jxta.myjxta.util.Group;
import net.jxta.myjxta.util.GroupNode;
import net.jxta.myjxta.util.Peer;
import net.jxta.myjxta.util.PeerNode;
import net.jxta.myjxta.util.Resources;
import net.jxta.pipe.PipeService;
import net.jxta.protocol.PipeAdvertisement;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.ResourceBundle;

/**
 * @author Ravi
 * @author jamoore
 *         TODO To change the template for this generated type comment go to
 *         Window - Preferences - Java - Code Style - Code Templates
 */
public class VoJxtaInviteAction extends AbstractAction {

    private static final int INTERVAL = 250;
    private static final int MAX = INTERVAL * 4 * 75;
    private static final Logger LOG = Logger.getLogger(VoJxtaInviteAction.class.getName());

    private View view = null;

    private static final ResourceBundle STRINGS = Resources.getStrings();

    public VoJxtaInviteAction(String name, View view) {
        super(name);

        this.view = view;

        if (LOG.isEnabledFor(Level.INFO)) {
            LOG.info("VOIPAction instantiated");
        }
    }

    public void actionPerformed(ActionEvent ae) {
        PeerNode pn = (PeerNode) this.view.getJxtaNode(PeerNode.class);
        final Peer p = pn != null ? pn.getPeer() : null;
        final Group g = pn != null ? ((GroupNode) (pn.getParent())).getGroup() : null;
        String status = null;

        if (p != null &&
                g != null) {
            status = this.STRINGS.getString("status.command.initiate") +
                    ": " + p.getName();

            if (LOG.isEnabledFor(Level.INFO)) {
                LOG.info(status);
            }

            new Thread(new Runnable() {
                public void run() {
                    process(g, p);
                }
            }, getClass().getName() + ":getConnection").start();
        } else {
            status = this.STRINGS.getString("error.peer.invalid") +
                    " " + p.getName();

            if (LOG.isEnabledFor(Level.ERROR)) {
                LOG.error(status);
            }
        }

        if (status != null) {
            this.view.setStatus(status);
        }
    }

    private void process(Group g, Peer p) {
        LOG.setLevel(Level.INFO);
        String status = "initiating vojxta action";
        this.view.setStatus(status);

        if (LOG.isEnabledFor(Level.INFO)) {
            LOG.info(status);
        }

        //get pipe adv from DialogManager - this is the VOIPPipe
        StructuredDocument d = getPipeAdv(g);
        //attach it as a message element
        TextDocumentMessageElement te = d != null ?
                new TextDocumentMessageElement(VOJXTACommand.PIPE,
                        (StructuredTextDocument) d, null) :
                null;


        if (te != null) {


            if (LOG.isEnabledFor(Level.INFO)) {
                LOG.info(status);
                LOG.info("instantiating VOIPCommand");
            }

            //command fetecher will send out a command on the command pipe
            RemoteCommandInvoker cf = new RemoteCommandInvoker(g, p.getPipeAdvertisement(),
                    new VOJXTACommand(), this.view.getControl());

            Map m = new HashMap();
            // add the our pipe element
            m.put(VOJXTACommand.PIPE, te);

            if (LOG.isEnabledFor(Level.INFO)) {
                LOG.info("dispatch VOIPcommand");
            }

            cf.invoke(MAX, m);
            //get respsonse
            DialogMessage r = cf.getResponse();

            if (LOG.isEnabledFor(Level.INFO)) {
                LOG.info("VOIPInvitationCommand response: " + r);
            }
            //this is why its important to have a consistent PIPE element in TestCommand
            MessageElement pae = r != null ?
                    r.getMessageElement(VOJXTACommand.PIPE) :
                    null;

            if (pae != null) {
                status = "vojxta pipe import" +
                        ": " + p.getName();

                this.view.setStatus(status);

                if (LOG.isEnabledFor(Level.INFO)) {
                    LOG.info(status);
                    LOG.info("adding dialog");
                }

                VoJxtaDialogPanel.setInitiatedLocally(true);

                this.view.getControl().addDialog(
                        DialogManager.getDialog(VoJxtaDialog.class,
                                g, getPipeAdv(pae), this.view.getControl()));
            } else {
                status = "request vojxta pipe" +
                        ": " + p.getName();

                this.view.setStatus(status);

                if (LOG.isEnabledFor(Level.ERROR)) {
                    LOG.error(status);
                }
            }
        } else {
            if (LOG.isEnabledFor(Level.ERROR)) {
                LOG.error("invalid response");
            }
        }


        LOG.setLevel(Level.ERROR);
    }

    private PipeAdvertisement getPipeAdv(MessageElement me) {
        if (LOG.isEnabledFor(Level.INFO)) {
            LOG.info("get pipeAdv");
        }

        StructuredDocument sd = null;

        if (true || me instanceof ByteArrayMessageElement) {
            if (LOG.isEnabledFor(Level.INFO)) {
                LOG.info("me instanceof ByteMessageElement");
            }

            try {
                sd = StructuredDocumentFactory.newStructuredDocument(MimeMediaType.XMLUTF8,
                        me.getStream());
            } catch (IOException ioe) {
                if (LOG.isEnabledFor(Level.ERROR)) {
                    LOG.error("can't document", ioe);
                }
            }
        } else {
            if (LOG.isEnabledFor(Level.INFO)) {
                LOG.info("me not instanceof ByteMessageElement");
            }
        }

        PipeAdvertisement pa = null;

        if (sd != null) {
            try {
                pa = (PipeAdvertisement) AdvertisementFactory.
                        newAdvertisement(MimeMediaType.XMLUTF8,
                                sd.getStream());
            } catch (IOException ioe) {
                if (LOG.isEnabledFor(Level.ERROR)) {
                    LOG.error("can't get pipe advertisement", ioe);
                }
            }
        }

        return pa;
    }

    private StructuredDocument getPipeAdv(Group g) {
        if (LOG.isEnabledFor(Level.INFO)) {
            LOG.info("getPipeAdvl");
        }

        String pn = Dialog.getDialogNamer(VoJxtaDialog.class).
                getDialogName(g.getPeerGroup().getPeerName());
        PipeAdvertisement pa = DialogManager.getInstance(g, pn,
                PipeService.UnicastType).getPipeAdv(g.getPeerGroup());

        return (StructuredDocument) pa.getDocument(MimeMediaType.XMLUTF8);
    }


    public boolean isEnabled() {
        PeerNode jxtaNode = (PeerNode) view.getJxtaNode(PeerNode.class);
        return jxtaNode != null; // we need a check that this isnt our own peer
    }
}