/**
* Copyright (c) 2011, Sebastian Sdorra
* 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. Neither the name of JDF; nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 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 REGENTS 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 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.
*
* https://bitbucket.org/sdorra/jdf
*
*/
package sonia.jdf.cmd.unix;
//~--- non-JDK imports --------------------------------------------------------
import sonia.jdf.ApplicationDescriptor;
import sonia.jdf.ResultCode;
import sonia.jdf.cmd.Command;
import sonia.jdf.cmd.CommandDescription;
//~--- JDK imports ------------------------------------------------------------
import com.sun.akuma.CLibrary;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
* @author Sebastian Sdorra
*/
public class UnixStodCommand implements Command
{
/** Field description */
public static final String COMMAND_NAME = "stop";
/** Field description */
public static final int SIGNAL_KILL = 15;
/** Field description */
private static final Logger logger =
Logger.getLogger(UnixStodCommand.class.getName());
//~--- methods --------------------------------------------------------------
/**
* Method description
*
*
* @param application
* @param args
*
* @return
*/
@Override
public int execute(ApplicationDescriptor application, String[] args)
{
int result = ResultCode.OK;
File pidFile = UnixCommandUtil.getPidFile(application);
if (pidFile.exists())
{
int pid = getPidFromFile(pidFile);
if (pid > 0)
{
CLibrary.LIBC.kill(pid, SIGNAL_KILL);
pidFile.delete();
}
else
{
System.err.println("could not read pid at ".concat(pidFile.getPath()));
result = ResultCode.PID_NOTREADABLE;
}
}
else
{
System.err.println("could not find pid at ".concat(pidFile.getPath()));
result = ResultCode.PID_NOTFOUND;
}
return result;
}
//~--- get methods ----------------------------------------------------------
/**
* Method description
*
*
* @param application
*
* @return
*/
@Override
public CommandDescription getDescription(ApplicationDescriptor application)
{
return new CommandDescription(
COMMAND_NAME,
"stops runnig instance of ".concat(application.getName()));
}
/**
* Method description
*
*
* @param pidFile
*
* @return
*/
private int getPidFromFile(File pidFile)
{
int pid = -1;
FileInputStream fis = null;
try
{
fis = new FileInputStream(pidFile);
byte[] content = new byte[fis.available()];
fis.read(content);
pid = Integer.parseInt(new String(content).trim());
}
catch (Exception ex)
{
logger.log(Level.SEVERE, null, ex);
}
finally
{
if (fis != null)
{
try
{
fis.close();
}
catch (IOException ex)
{
logger.log(Level.SEVERE, null, ex);
}
}
}
return pid;
}
}