net.jxta.impl.shell.bin.rdvstatus.rdvstatus Maven / Gradle / Ivy
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The JXTA Shell is a sample application that demonstrates key concepts
of JXTA JXSE. The JXTA Shell enables users to interact with the JXTA
platform through a command-line interpreter. Much like the UNIX® shell,
the JXTA Shell is useful for accessing and managing core platform objects
(peers, groups, pipes), debugging communications problems, checking the
status of peers and/or peer groups, and communicating with other JXTA
services and applications. As in UNIX®, the JXTA shell allows users to
"pipe" shell commands together connecting commands "on-the-fly." Pipes
in Project JXTA are useful for collecting information at one peer and
perhaps processing the command at another.
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/*
* Copyright (c) 2001 Sun Microsystems, Inc. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Sun Microsystems, Inc. for Project JXTA."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact Project JXTA at http://www.jxta.org.
*
* 5. Products derived from this software may not be called "JXTA",
* nor may "JXTA" appear in their name, without prior written
* permission of Sun.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL SUN MICROSYSTEMS OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of Project JXTA. For more
* information on Project JXTA, please see
* names = new HashMap();
/**
* {@inheritDoc}
*/
public int startApp(String[] args) {
boolean verbose = false;
GetOpt options = new GetOpt(args, 0, "v");
while (true) {
int option;
try {
option = options.getNextOption();
} catch (IllegalArgumentException badopt) {
consoleMessage("Illegal argument :" + badopt);
return syntaxError();
}
if (-1 == option) {
break;
}
switch (option) {
case'v':
verbose = true;
break;
default:
consoleMessage("Unrecognized option");
return syntaxError();
}
}
if (null != options.getNextParameter()) {
consoleMessage("Unexpected parameter.");
return syntaxError();
}
RendezVousService rdv = getGroup().getRendezVousService();
if (null == rdv) {
consoleMessage("No Rendezvous Service in group ");
return ShellApp.appMiscError;
}
discovery = getGroup().getDiscoveryService();
println(" ");
println("Rendezvous Status: ");
println("__________________");
println(" ");
println("Current configuration : " + rdv.getRendezVousStatus());
RendezVousServiceInterface stdRdv;
net.jxta.impl.rendezvous.StdRendezVousService stdRdvProvider = null;
if (rdv instanceof net.jxta.impl.rendezvous.RendezVousServiceInterface) {
stdRdv = (RendezVousServiceInterface) rdv;
PeerView rpv = null;
if (null != stdRdv) {
net.jxta.impl.rendezvous.RendezVousServiceProvider provider = stdRdv.getRendezvousProvider();
if (provider instanceof net.jxta.impl.rendezvous.StdRendezVousService) {
stdRdvProvider = (net.jxta.impl.rendezvous.StdRendezVousService) provider;
}
rpv = stdRdv.getPeerView();
}
if (null != rpv) {
PeerViewElement self = rpv.getSelf();
if (verbose) {
print("\t" + self.getRdvAdvertisement().getPeerID());
}
println("\t" + self);
List pves = new ArrayList(rpv.getView());
Collections.reverse(pves);
println(" ");
println("Peer View : ");
if (!pves.isEmpty()) {
for (PeerViewElement eachPVE : pves) {
if (verbose) {
print("\t" + eachPVE.getRdvAdvertisement().getPeerID());
}
print("\t" + eachPVE);
if (rdv.isRendezVous()) {
if (eachPVE == rpv.getUpPeer()) {
println("\t(UP)");
} else if (eachPVE == rpv.getDownPeer()) {
println("\t(DOWN)");
} else {
println("");
}
} else {
println("");
}
}
} else {
println("\t[None]");
}
}
}
println(" ");
if (!rdv.isRendezVous()) {
Enumeration rdvs = rdv.getConnectedRendezVous();
println("Rendezvous Connections :");
if (!rdvs.hasMoreElements()) {
println("\t[None]");
} else {
while (rdvs.hasMoreElements()) {
try {
ID connection = (PeerID) rdvs.nextElement();
if (verbose) {
print("\t" + connection);
}
if (null != stdRdvProvider) {
println("\t" + stdRdvProvider.getPeerConnection(connection));
} else {
String peerName = idToName(connection);
println("\t" + peerName);
}
} catch (Exception e) {
printStackTrace("failed", e);
}
}
}
println(" ");
Enumeration rmRdvs = rdv.getDisconnectedRendezVous();
println("Rendezvous Disconnections :");
if (!rmRdvs.hasMoreElements()) {
println("\t[None]");
} else {
while (rmRdvs.hasMoreElements()) {
try {
ID connection = (PeerID) rmRdvs.nextElement();
print("\t");
if (verbose) {
print("\t" + connection);
}
String peerName = idToName(connection);
println("\t" + peerName);
} catch (Exception e) {
printStackTrace("failed", e);
}
}
}
println(" ");
}
// no need to display clients if the peer is not a rendezvous for
// the group
if (rdv.isRendezVous()) {
Enumeration clients = rdv.getConnectedPeers();
println("Rendezvous Client Connections :");
if (!clients.hasMoreElements()) {
println("\t[None]");
} else {
while (clients.hasMoreElements()) {
try {
ID connection = (PeerID) clients.nextElement();
if (verbose) {
print("\t" + connection);
}
if (null != stdRdvProvider) {
println("\t" + stdRdvProvider.getPeerConnection(connection));
} else {
String peerName = idToName(connection);
println("\t" + peerName);
}
} catch (Exception e) {
println("failed with " + e);
}
}
}
println(" ");
}
return ShellApp.appNoError;
}
private int syntaxError() {
consoleMessage("usage : rdvstatus [-v] ");
return ShellApp.appParamError;
}
/**
* {@inheritDoc}
*/
@Override
public String getDescription() {
return "Display information about the rendezvous service";
}
/**
* {@inheritDoc}
*/
@Override
public void help() {
println("NAME");
println(" rdvstatus - " + getDescription());
println(" ");
println("SYNOPSIS");
println(" rdvstatus [-v]");
println(" ");
println("OPTIONS");
println(" [-v] print verbose information");
println(" ");
println("DESCRIPTION");
println(" ");
println("'rdvstatus' displays information about the rendezvous");
println("service in the current group. The command shows the current");
println("peerview and any rendezvous or client connections.");
println("");
println("EXAMPLE");
println(" ");
println(" JXTA>rdvstatus");
println(" ");
println(" ");
println("SEE ALSO");
println(" whoami peers");
}
/**
* Description of the Method
*
* @param id Description of Parameter
* @return Description of the Returned Value
*/
private String idToName(ID id) {
String idstring = id.toString();
String name = names.get(id);
if (null != name) {
return name;
}
try {
Enumeration res;
if (id instanceof PeerID) {
res = discovery.getLocalAdvertisements(DiscoveryService.PEER, "PID", idstring);
if (res.hasMoreElements()) {
name = ((PeerAdvertisement) res.nextElement()).getName();
}
} else if (id instanceof PeerGroupID) {
res = discovery.getLocalAdvertisements(DiscoveryService.GROUP, "GID", idstring);
if (res.hasMoreElements()) {
name = ((PeerGroupAdvertisement) res.nextElement()).getName();
}
}
} catch (IOException failed) {
println("failed with " + failed);
}
if (null != name) {
names.put(id, name);
} else {
name = "[unknown]";
}
return name;
}
}