/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* 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 version 2 of the License.
*
* This program 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.enterprise.communications.command.impl.start.server;
import org.rhq.core.util.exec.ProcessExecutorResults;
import org.rhq.core.util.exec.ProcessToStart;
import org.rhq.enterprise.communications.command.impl.start.StartCommand;
import org.rhq.enterprise.communications.command.impl.start.StartCommandResponse;
/**
* Used to execute a process. Uses {@link StartCommand} as the object used to encapsulate the metadata about the process
* to start.
*
* <p><b>Warning: caution should be exercised when using this class - it allows any process to be started with no
* security restrictions.</b></p>
*
* @author John Mazzitelli
*/
public class ProcessExec {
/**
* This executes any operating system process as described in the given start command. When this method returns, it
* can be assumed that the process was launched but not necessarily finished. The caller can ask this method to
* block until process exits by setting {@link StartCommand#getWaitForExit()}. On error, the exception will be
* returned in the returned response.
*
* <p>Subclasses may override this method to accept different types of commands; they just need to ensure that if
* they call this super method, that the command is of type {@link StartCommand}.</p>
*
* @param command the command that contains metadata about the process to start
*
* @return the results of the command execution
*/
public StartCommandResponse execute(StartCommand command) {
org.rhq.core.util.exec.ProcessExecutor exec = new org.rhq.core.util.exec.ProcessExecutor();
StartCommandResponse response;
try {
StartCommand startCommand = new StartCommand(command);
ProcessToStart process = new ProcessToStart();
process.setArguments(command.getArguments());
process.setBackupOutputFile(command.isBackupOutputFile());
process.setCaptureOutput(command.isCaptureOutput());
process.setEnvironment(command.getEnvironment());
process.setInputDirectory(command.getInputDirectory());
process.setInputFile(command.getInputFile());
process.setOutputDirectory(command.getOutputDirectory());
process.setOutputFile(command.getOutputFile());
process.setProgramDirectory(command.getProgramDirectory());
process.setProgramExecutable(command.getProgramExecutable());
process.setProgramTitle(command.getProgramTitle());
process.setWaitForExit(command.getWaitForExit());
process.setWorkingDirectory(command.getWorkingDirectory());
ProcessExecutorResults results = exec.execute(process);
Integer exitCode = results.getExitCode();
Throwable error = results.getError();
if (error == null) {
response = new StartCommandResponse(startCommand, exitCode);
} else {
response = new StartCommandResponse(startCommand, error);
}
} catch (Exception e) {
response = new StartCommandResponse(command, e);
}
return response;
}
}