com.ca.codesv.agent

Class AgentTransformer

java.lang.Object

com.ca.codesv.agent.AgentTransformer

All Implemented Interfaces:

java.lang.instrument.ClassFileTransformer

public class AgentTransformer
extends java.lang.Object
implements java.lang.instrument.ClassFileTransformer

Our transformer used to transform classes based on {HijackTransformer.transform(byte[]) (String, byte[])}} implementation.

Constructor Summary

Constructors

Constructor and Description
AgentTransformer(java.lang.String className, java.lang.String methodName, HijackBehavior hijackBehavior) Default constructor which creates an instance for storing HijackTransformer instances and adding defined new one.

Method Summary

Modifier and Type	Method and Description
void	addHijackBehavior(java.lang.String className, java.lang.String methodName, HijackBehavior hijackBehavior) Adding a new hijacking for instrumentation.
java.lang.Class<?>[]	getAllTransformedClasses() Returns all classes transformed by any of protocolTransformers.
void	removeHijackBehavior(java.lang.String className, java.lang.String methodName, HijackBehavior hijackBehavior) Remove hijacking from instrumentation.
byte[]	transform(java.lang.ClassLoader loader, java.lang.String className, java.lang.Class<?> classBeingRedefined, java.security.ProtectionDomain protectionDomain, byte[] classfileBuffer) Instrumentation.

Methods inherited from class java.lang.Object

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

Constructor Detail

AgentTransformer

public AgentTransformer(java.lang.String className,
                        java.lang.String methodName,
                        HijackBehavior hijackBehavior)

Default constructor which creates an instance for storing HijackTransformer instances and adding defined new one.

Parameters:

className - which should be instrumented.

methodName - which should be instrumented.

hijackBehavior - specific implementation which will be called during instrumentation.

Method Detail

addHijackBehavior

public void addHijackBehavior(java.lang.String className,
                              java.lang.String methodName,
                              HijackBehavior hijackBehavior)

Adding a new hijacking for instrumentation.

Parameters:

className - which should be instrumented.

methodName - which should be instrumented.

hijackBehavior - specific implementation which will be called during instrumentation.

removeHijackBehavior

public void removeHijackBehavior(java.lang.String className,
                                 java.lang.String methodName,
                                 HijackBehavior hijackBehavior)

Remove hijacking from instrumentation.

Parameters:

className - of registered hijack.

methodName - of registered hijack.

hijackBehavior - of registered hijack.

transform

public byte[] transform(java.lang.ClassLoader loader,
                        java.lang.String className,
                        java.lang.Class<?> classBeingRedefined,
                        java.security.ProtectionDomain protectionDomain,
                        byte[] classfileBuffer)
                 throws java.lang.instrument.IllegalClassFormatException

Instrumentation.

Specified by:

transform in interface java.lang.instrument.ClassFileTransformer

Throws:

java.lang.instrument.IllegalClassFormatException

See Also:

method.

getAllTransformedClasses

public java.lang.Class<?>[] getAllTransformedClasses()
                                              throws AgentException

Returns all classes transformed by any of protocolTransformers.

Returns:

Array of classes

Throws:

AgentException