/*******************************************************************************
*Copyright (c) 2009 Eucalyptus Systems, Inc.
*
* This program 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, only version 3 of the License.
*
*
* This file 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/>.
*
* Please contact Eucalyptus Systems, Inc., 130 Castilian
* Dr., Goleta, CA 93101 USA or visit <http://www.eucalyptus.com/licenses/>
* if you need additional information or have any questions.
*
* This file may incorporate work covered under the following copyright and
* permission notice:
*
* Software License Agreement (BSD License)
*
* Copyright (c) 2008, Regents of the University of California
* All rights reserved.
*
* Redistribution and use of this software in source and binary forms, with
* or without modification, are permitted provided that the following
* conditions are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS 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 THE COPYRIGHT OWNER
* OR 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
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. USERS OF
* THIS SOFTWARE ACKNOWLEDGE THE POSSIBLE PRESENCE OF OTHER OPEN SOURCE
* LICENSED MATERIAL, COPYRIGHTED MATERIAL OR PATENTED MATERIAL IN THIS
* SOFTWARE, AND IF ANY SUCH MATERIAL IS DISCOVERED THE PARTY DISCOVERING
* IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA, SANTA
* BARBARA WHO WILL THEN ASCERTAIN THE MOST APPROPRIATE REMEDY, WHICH IN
* THE REGENTS’ DISCRETION MAY INCLUDE, WITHOUT LIMITATION, REPLACEMENT
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*******************************************************************************/
package edu.ucsb.eucalyptus.cloud.ws;
/*
*
* Author: Sunil Soman sunils@cs.ucsb.edu
*/
import com.eucalyptus.auth.util.Hashes;
import com.eucalyptus.util.WalrusProperties;
import edu.ucsb.eucalyptus.util.StreamConsumer;
import org.apache.log4j.Logger;
import java.io.*;
public class TorrentCreator {
private static Logger LOG = Logger.getLogger( TorrentCreator.class );
private String torrentFilePath;
private String filePath;
private String trackerUrl;
private String objectKey;
private String objectName;
private final String NAME_TAG = "name";
public TorrentCreator(String filePath, String objectKey, String objectName, String torrentFilePath, String trackerUrl) {
this.filePath = filePath;
this.torrentFilePath = torrentFilePath;
this.trackerUrl = trackerUrl;
this.objectKey = objectKey;
this.objectName = objectName;
}
private void makeTorrent() {
new File(WalrusProperties.TRACKER_DIR).mkdirs();
try {
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec(new String[]{WalrusProperties.TORRENT_CREATOR_BINARY, filePath, trackerUrl, "--target", torrentFilePath});
StreamConsumer error = new StreamConsumer(proc.getErrorStream());
StreamConsumer output = new StreamConsumer(proc.getInputStream());
error.start();
output.start();
int pid = proc.waitFor();
output.join();
String errValue = error.getReturnValue();
String outValue = output.getReturnValue();
if(errValue.length() > 0)
LOG.warn(errValue);
if(outValue.length() > 0)
LOG.warn(outValue);
} catch (Throwable t) {
LOG.error(t);
}
}
private void changeName() throws Exception {
File inFile = new File(torrentFilePath);
File outFile = new File(torrentFilePath + Hashes.getRandom(6));
BufferedInputStream inStream = new BufferedInputStream(new FileInputStream(inFile));
BufferedOutputStream outStream = new BufferedOutputStream(new FileOutputStream(outFile));
int bytesRead;
int totalBytesRead = 0;
byte[] bytes = new byte[102400];
String inString = "";
while((bytesRead = inStream.read(bytes)) > 0) {
inString += new String(bytes, 0, bytesRead);
totalBytesRead += bytesRead;
}
inStream.close();
int len = inString.length();
int idx = inString.indexOf(NAME_TAG);
int lastidx = inString.indexOf(objectName) + objectName.length();
outStream.write(bytes, 0, idx + NAME_TAG.length());
outStream.write(new String(objectKey.length() + ":" + objectKey).getBytes());
outStream.write(bytes, lastidx, totalBytesRead - lastidx);
outStream.close();
outFile.renameTo(inFile);
}
public void create() throws Exception {
makeTorrent();
changeName();
}
}