/*
* Copyright (C) 2007-2014 Christian Bockermann <chris@jwall.org>
*
* This file is part of the web-audit library.
*
* web-audit library is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* The web-audit library 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package org.jwall;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.util.Random;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.jwall.web.audit.util.Base64Codec;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class GenerateLargeEvent {
static Logger log = LoggerFactory.getLogger( GenerateLargeEvent.class );
public static void writeRandomData( PrintWriter writer, long size ){
Base64Codec b64 = new Base64Codec();
Random rnd = new Random();
long written = 0;
final byte[] buf = new byte[16 * 1024];
rnd.nextBytes( buf );
char[] newline = new char[]{ '\r', '\n' };
while( written < size ){
Long remain = size - written;
int write = Math.min( buf.length, remain.intValue() );
byte[] encoded = b64.encode( buf );
for( int i = 0; i < write && i < buf.length; i++ ){
writer.write( (int) encoded[i] );
written++;
if( i > 0 && written % 80 == 0 ){
writer.write( newline );
i += 2;
written += 2;
}
}
writer.flush();
}
log.debug( "Wrote {} random bytes in Base64..." );
}
/**
* @param args
*/
public static void main(String[] args) throws Exception {
long start = System.currentTimeMillis();
Pattern p = Pattern.compile( "^--[a-zA-z0-9]*-([A-Z])--$" );
URL url = GenerateLargeEvent.class.getResource( "/audit.log" );
PrintWriter writer = new PrintWriter( new FileWriter( new File( "/Volumes/RamDisk/big-event.audit-log" ) ) );
long size = 16 * 10 * 1024 * 1024L;
char section = 'A';
BufferedReader reader = new BufferedReader( new InputStreamReader( url.openStream() ) );
String line = reader.readLine();
while( line != null ){
Matcher m = p.matcher( line );
if( m.matches() ){
log.info( "Found separator: {}", line );
String grp = m.group( 1 );
log.info( " caught: '{}'", grp );
section = grp.charAt( 0 );
}
if( section == 'B' && line.startsWith( "Content-Length: " ) ){
log.info( "injecting new content-length..." );
writer.println( "Content-Length: " + size );
line = reader.readLine();
continue;
}
if( section == 'C' && line.startsWith( "TEST_DATA" ) ){
log.info( "Writing {} bytes of random data...", size );
writeRandomData( writer, size );
writer.println();
line = reader.readLine();
continue;
}
writer.println( line );
line = reader.readLine();
}
reader.close();
writer.close();
long end = System.currentTimeMillis();
log.info( "Creating event required {} ms", (end-start) );
}
}