info.java

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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
 * <http://www.jxta.org/>.
 *
 * This license is based on the BSD license adopted by the Apache Foundation.
 *
 * $Id: info.java,v 1.4 2004/06/07 17:14:12 hamada Exp $
 */

package net.jxta.impl.shell.bin.info;

import java.util.Date;
import net.jxta.discovery.*;
import net.jxta.document.Advertisement;
import net.jxta.exception.*;
import net.jxta.impl.shell.*;
import net.jxta.peergroup.*;


/**
 * info command to remove a document from cache
 *
 */
public class info extends ShellApp  {
    private ShellEnv env;
    private static int i=0;
    private DiscoveryService discovery=null;

    public void stopApp() {}

    public int startApp(String[] args) {

        env = getEnv();
        discovery = getGroup().getDiscoveryService();

        if (args == null) {
            shortHelp();
            return ShellApp.appNoError;
        }

        GetOpt getopt = new GetOpt(args, "d:");

        int c;
        while ((c = getopt.getNextOption()) != -1) {
            switch(c) {
            case 'd':
                return info(getopt.getOptionArg());
            default:
                println("Error: peers this should have never happened");
            }
        }
        return ShellApp.appNoError;
    }

    private int info(String name) {

        ShellObject obj = env.get(name);
        if (obj == null) {
            println("flush: env object" + name +" not found");
            return ShellApp.appMiscError;
        }

        Object adv = obj.getObject();
        if( adv instanceof Advertisement) {
            long life = discovery.getAdvLifeTime((Advertisement) adv);
            long exp  = discovery.getAdvExpirationTime((Advertisement) adv);
            println("Expires on            : " + new Date(life + System.currentTimeMillis())
                    + "\nExpires for others in : " + exp + " ms");
        } else {
            shortHelp();
        }
        return ShellApp.appNoError;
    }

    public String getDescription() {
        return "display info about an jxta advertisement";
    }

    public void shortHelp() {
        println("NAME");
        println("     info - display info about an jxta advertisement");
        println(" ");
        println("SYNOPSIS");
        println("    info  [-d document]");
        println(" ");
    }

    public void help() {
        shortHelp();
        println("DESCRIPTION");
        println(" ");
        println("use \"info\" to display info about an advertisement");
        println(" ");
        println("OPTIONS");
        println("-d document");
        println("     env advertisement");
        println(" ");
        println("EXAMPLE");
        println(" ");
        println("    JXTA>info -d peer10");
        println(" ");
        println("    displays Lifetime and expiration about peer10");
        println(" ");
    }
}