/*
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat Middleware LLC, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.arquillian.extension.byteman.impl.container;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.management.ManagementFactory;
import org.jboss.arquillian.core.api.annotation.Observes;
import org.jboss.arquillian.extension.byteman.impl.common.BytemanConfiguration;
import org.jboss.arquillian.extension.byteman.impl.common.GenerateScriptUtil;
import org.jboss.arquillian.test.spi.event.suite.BeforeSuite;
import com.sun.tools.attach.VirtualMachine;
/**
* AgentInstaller
*
* @author <a href="mailto:aslak@redhat.com">Aslak Knutsen</a>
* @version $Revision: $
*/
public class AgentInstaller {
public void install(@Observes(precedence = 1) BeforeSuite event)
{
try
{
BytemanConfiguration config = BytemanConfiguration.from(
Thread.currentThread().getContextClassLoader().getResourceAsStream(BytemanConfiguration.BYTEMAN_CONFIG)
);
if(!config.autoInstallAgent())
{
return;
}
try
{
// Not only load it, but also attempt to check firstTime variable, since in embedded containers this might be the same jvm
Class<?> mainClass = Thread.currentThread().getContextClassLoader().loadClass("org.jboss.byteman.agent.Main");
if(!(Boolean)mainClass.getDeclaredField("firstTime").get(null))
{
return;
}
}
catch (ClassNotFoundException e)
{
// Agent not loaded yet, move on
}
String pid = ManagementFactory.getRuntimeMXBean().getName().split("@")[0];
File bytemanHome = File.createTempFile("byteman", "agent");
bytemanHome.delete();
bytemanHome.mkdir();
File bytemanLib = new File(bytemanHome, "lib");
bytemanLib.mkdirs();
InputStream bytemanInputJar = Thread.currentThread().getContextClassLoader().getResourceAsStream(BytemanConfiguration.BYTEMAN_JAR);
File bytemanJar = new File(bytemanLib, BytemanConfiguration.BYTEMAN_JAR);
GenerateScriptUtil.copy(bytemanInputJar, new FileOutputStream(bytemanJar));
VirtualMachine vm = VirtualMachine.attach(pid);
String agentProperties = config.agentProperties();
vm.loadAgent(bytemanJar.getAbsolutePath(), "listener:true,port:" + config.containerAgentPort() + (agentProperties != null ? ",prop:" + agentProperties:""));
vm.detach();
}
catch (IOException e)
{
throw new RuntimeException("Could not write byteman.jar to disk", e);
}
catch (Exception e)
{
throw new RuntimeException("Could not install byteman agent", e);
}
}
}