/*
* NOTE: This copyright does *not* cover user programs that use HQ
* program services by normal system calls through the application
* program interfaces provided as part of the Hyperic Plug-in Development
* Kit or the Hyperic Client Development Kit - this is merely considered
* normal use of the program, and does *not* fall under the heading of
* "derived work".
*
* Copyright (C) [2004, 2005, 2006], Hyperic, Inc.
* This file is part of HQ.
*
* HQ is free software; you can redistribute it and/or modify
* it under the terms version 2 of the GNU General Public License as
* published by the Free Software Foundation. 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000 The Apache Software Foundation. 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. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Ant", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
* ITS 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.hyperic.util.exec;
import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;
/**
* Copies standard output and error of subprocesses to standard output and
* error of the parent process.
*
*
* @author thomas.haas@softwired-inc.com
*/
public class PumpStreamHandler implements ExecuteStreamHandler {
private Thread inputThread;
private Thread errorThread;
private OutputStream out, err;
boolean running=false;
public PumpStreamHandler(OutputStream out, OutputStream err) {
this.out = out;
this.err = err;
}
public PumpStreamHandler(OutputStream outAndErr) {
this(outAndErr, outAndErr);
}
public PumpStreamHandler() {
this(System.out, System.err);
}
public void setProcessOutputStream(InputStream is) {
createProcessOutputPump(is, out);
}
public void setProcessErrorStream(InputStream is) {
createProcessErrorPump(is, err);
}
/**
* Standard input is not processed. So we are closing the stream as required for the Windows powershell scenario.
*/
public void setProcessInputStream(OutputStream os) {
try {
os.close();
} catch (IOException e) {
// not a problem in this case.
}
}
public void start() {
inputThread.start();
errorThread.start();
running=true;
}
public void stop() {
if( ! running ) return;
try {
//if( log.isDebugEnabled() ) log.debug("Joining it");
// inputThread.interrupt();
inputThread.join(1000);
//if( log.isDebugEnabled() ) log.debug("Joined" );
} catch(InterruptedException e) {}
try {
//if( log.isDebugEnabled() ) log.debug("Joining it");
// errorThread.interrupt();
errorThread.join(1000);
//if( log.isDebugEnabled() ) log.debug("Joined" );
} catch(InterruptedException e) {}
try {
err.flush();
} catch (IOException e) {}
try {
out.flush();
} catch (IOException e) {}
running=false;
}
protected OutputStream getErr() {
return err;
}
protected OutputStream getOut() {
return out;
}
protected void createProcessOutputPump(InputStream is, OutputStream os) {
inputThread = createPump(is, os);
}
protected void createProcessErrorPump(InputStream is, OutputStream os) {
errorThread = createPump(is, os);
}
/**
* Creates a stream pumper to copy the given input stream to the given output stream.
*/
protected Thread createPump(InputStream is, OutputStream os) {
final Thread result = new Thread(new StreamPumper(is, os));
result.setDaemon(true);
return result;
}
private static org.apache.commons.logging.Log log=
org.apache.commons.logging.LogFactory.getLog( PumpStreamHandler.class );
}