/*
* JBoss, Home of Professional Open Source.
* Copyright 2000 - 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.cache.util;
import org.jboss.cache.Cache;
import org.jboss.cache.CacheSPI;
import org.jboss.cache.DataContainer;
import org.jboss.cache.DataContainerImpl;
import org.jboss.cache.interceptors.base.CommandInterceptor;
import org.jboss.cache.invocation.CacheInvocationDelegate;
import java.text.NumberFormat;
/**
* Helper that prints the contents of a {@link org.jboss.cache.Cache} to a string.
*
* @author <a href="mailto:manik AT jboss DOT org">Manik Surtani</a>
* @since 2.0.0
*/
public class CachePrinter
{
/**
* Prints the contents of the cache (nodes + data) to a string
*
* @param c cache to print
* @return a String representation of the cache
*/
public static String printCacheDetails(Cache c)
{
// internal cast
DataContainer ci = ((CacheInvocationDelegate) c).getDataContainer();
return ci.printDetails();
}
/**
* Prints the status of locks in the cache (nodes + locks) to a string
*
* @param c cache to print
* @return a String representation of the cache
*/
public static String printCacheLockingInfo(Cache c)
{
// internal cast
DataContainerImpl cd = (DataContainerImpl) ((CacheInvocationDelegate) c).getDataContainer();
return cd.printLockInfo();
}
public static String printCacheInterceptors(CacheSPI<?, ?> cache)
{
StringBuilder b = new StringBuilder();
int index = 0;
b.append("\n");
for (CommandInterceptor i : cache.getInterceptorChain())
{
b.append("# ");
b.append(index);
b.append(" : ");
b.append(i);
b.append("\n");
index++;
}
return b.toString();
}
public static String printInterceptorChain(CommandInterceptor i)
{
StringBuilder sb = new StringBuilder();
if (i != null)
{
if (i.getNext() != null)
{
sb.append(printInterceptorChain(i.getNext())).append("\n");
}
sb.append("\t>> ");
sb.append(i.getClass().getName());
}
return sb.toString();
}
/**
* Formats a given String for display as an HTML snippet.
*
* @param s string to format
* @return formatted string
*/
public static String formatHtml(String s)
{
s = s.replaceAll("\r\n", "<br/>");
s = s.replaceAll("\r", "<br/>");
s = s.replaceAll("\n", "<br/>");
s = s.replaceAll("\t", " ");
s = s.replaceAll(" ", " ");
return s;
}
/**
* Prints a time for display
* @param millis time in millis
* @return the time, represented as millis, seconds, minutes or hours as appropriate, with suffix
*/
public static String prettyPrint(long millis)
{
if (millis < 1000) return millis + " milliseconds";
NumberFormat nf = NumberFormat.getNumberInstance();
nf.setMaximumFractionDigits(2);
double toPrint = ((double) millis) / 1000;
if (toPrint < 300)
{
return nf.format(toPrint) + " seconds";
}
toPrint = toPrint / 60;
if (toPrint < 120)
{
return nf.format(toPrint) + " minutes";
}
toPrint = toPrint / 60;
return nf.format(toPrint) + " hours";
}
}