/*
* JBoss, Home of Professional Open Source.
* Copyright (c) 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.libra;
import com.sun.tools.attach.VirtualMachine;
import com.sun.tools.attach.VirtualMachineDescriptor;
import java.util.Properties;
import java.util.logging.Logger;
/**
* @author <a href="mailto:cdewolf@redhat.com">Carlo de Wolf</a>
*/
class LibraAttacher {
private static final Logger log = Logger.getLogger(LibraAttacher.class.getName());
static void attach() {
for (VirtualMachineDescriptor virtualMachineDescriptor : VirtualMachine.list()) {
try {
VirtualMachine virtualMachine = virtualMachineDescriptor.provider().attachVirtualMachine(virtualMachineDescriptor);
try {
String propertyName = Libra.class.getName() + ".installed";
Properties systemProperties = virtualMachine.getSystemProperties();
Properties agentProperties = virtualMachine.getAgentProperties();
String installed = agentProperties.getProperty(propertyName, systemProperties.getProperty(propertyName));
if(installed == null || Boolean.valueOf(installed) == false) {
String javaClassPath = systemProperties.getProperty("java.class.path");
String location = Libra.class.getProtectionDomain().getCodeSource().getLocation().getFile();
if(javaClassPath.contains(location)) {
virtualMachine.loadAgent(location, propertyName + "=true");
log.info("Libra installed in " + virtualMachineDescriptor);
}
} else {
log.info("Libra already installed in " + virtualMachineDescriptor);
}
}
finally {
virtualMachine.detach();
}
}
catch(Exception e) {
log.warning("Failed to install Libra into " + virtualMachineDescriptor + ": " + e.getMessage());
}
}
}
}