org.jboss.byteman.agent.install

Class Install

java.lang.Object

org.jboss.byteman.agent.install.Install

public class Install
extends Object

A program which uses the sun.com.tools.attach.VirtualMachine class to install the Byteman agent into a running JVM. This provides an alternative to using the -javaagent option to install the agent.

Method Summary

Methods

Modifier and Type	Method and Description
static VMInfo[]	availableVMs()
static String	getSystemProperty(String id, String property) attach to the virtual machine identified by id and return the value of the named property.
static void	install(String pid, boolean addToBoot, boolean setPolicy, String host, int port, String[] properties)
static void	install(String pid, boolean addToBoot, String host, int port, String[] properties) compatability mode
void	locateAgentFromClasspath()
void	locateAgentFromHomeDir(String bmHome)
static void	main(String[] args) main routine for use from command line Install [-h host] [-p port] [-b] [-s] [-Dorg.jboss.Byteman.xxx]* pid see method usage(int) for details of the command syntax

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

main

public static void main(String[] args)

main routine for use from command line

Install [-h host] [-p port] [-b] [-s] [-Dorg.jboss.Byteman.xxx]* pid

see method usage(int) for details of the command syntax

Parameters:

args - the command options

install

public static void install(String pid,
           boolean addToBoot,
           String host,
           int port,
           String[] properties)
                    throws IllegalArgumentException,
                           FileNotFoundException,
                           IOException,
                           com.sun.tools.attach.AttachNotSupportedException,
                           com.sun.tools.attach.AgentLoadException,
                           com.sun.tools.attach.AgentInitializationException

compatability mode

Throws:

IllegalArgumentException

FileNotFoundException

IOException

com.sun.tools.attach.AttachNotSupportedException

com.sun.tools.attach.AgentLoadException

com.sun.tools.attach.AgentInitializationException

install

public static void install(String pid,
           boolean addToBoot,
           boolean setPolicy,
           String host,
           int port,
           String[] properties)
                    throws IllegalArgumentException,
                           FileNotFoundException,
                           IOException,
                           com.sun.tools.attach.AttachNotSupportedException,
                           com.sun.tools.attach.AgentLoadException,
                           com.sun.tools.attach.AgentInitializationException

Parameters:

pid - the process id of the JVM into which the agent should be installed or 0 for this JVM

addToBoot - true if the agent jar should be installed into the bootstrap classpath

setPolicy - true if the agent jar should set an access-all-areas securityPolicy

host - the hostname to be used by the agent listener or null for localhost

port - the port to be used by the agent listener or 0 for the default port

properties - an array of System properties to be installed by the agent with optional values e.g. values such as "org.jboss.byteman.verbose" or "org.jboss.byteman.dump.generated.classes.directory=./dump"

Throws:

IllegalArgumentException - if any of the arguments is invalid

FileNotFoundException - if the agent jar cannot be found using the environment variable BYTEMAN_HOME or the System property org.jboss.byteman.home and cannot be located in the current classpath

IOException - if the byteman jar cannot be opened or uploaded to the requested JVM

com.sun.tools.attach.AttachNotSupportedException - if the requested JVM cannot be attached to

com.sun.tools.attach.AgentLoadException - if an error occurs during upload of the agent into the JVM

com.sun.tools.attach.AgentInitializationException - if the agent fails to initialize after loading. this almost always indicates that the agent is already loaded into the JVM

availableVMs

public static VMInfo[] availableVMs()

getSystemProperty

public static String getSystemProperty(String id,
                       String property)

attach to the virtual machine identified by id and return the value of the named property. id must be the id of a virtual machine returned by method availableVMs.

Parameters:

id - the id of the machine to attach to

property - the proeprty to be retrieved

Returns:

the value of the property or null if it is not set

locateAgentFromHomeDir

public void locateAgentFromHomeDir(String bmHome)
                            throws IOException

Throws:

IOException

locateAgentFromClasspath

public void locateAgentFromClasspath()
                              throws IOException

Throws:

IOException