Package io.opentelemetry.javaagent.tooling

Class HelperInjector

java.lang.Object

io.opentelemetry.javaagent.tooling.HelperInjector

All Implemented Interfaces:

net.bytebuddy.agent.builder.AgentBuilder.Transformer

public class HelperInjector
extends Object
implements net.bytebuddy.agent.builder.AgentBuilder.Transformer

Injects instrumentation helper classes into the user's classloader.

Nested Class Summary

Nested classes/interfaces inherited from interface net.bytebuddy.agent.builder.AgentBuilder.Transformer

net.bytebuddy.agent.builder.AgentBuilder.Transformer.ForAdvice, net.bytebuddy.agent.builder.AgentBuilder.Transformer.ForBuildPlugin

Constructor Summary

Constructors

Constructor	Description
HelperInjector(String requestingName, List<String> helperClassNames, List<String> helperResourceNames)	Construct HelperInjector.
HelperInjector(String requestingName, Map<String,byte[]> helperMap)

Method Summary

Modifier and Type	Method	Description
static HelperInjector	forDynamicTypes(String requestingName, Collection<net.bytebuddy.dynamic.DynamicType.Unloaded<?>> helpers)
static boolean	isInjectedClass(Class<?> c)
net.bytebuddy.dynamic.DynamicType.Builder<?>	transform(net.bytebuddy.dynamic.DynamicType.Builder<?> builder, net.bytebuddy.description.type.TypeDescription typeDescription, ClassLoader classLoader, net.bytebuddy.utility.JavaModule module)

Methods inherited from class java.lang.Object

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

Constructor Detail

HelperInjector

public HelperInjector(String requestingName,
                      List<String> helperClassNames,
                      List<String> helperResourceNames)

Construct HelperInjector.

Parameters:

helperClassNames - binary names of the helper classes to inject. These class names must be resolvable by the classloader returned by io.opentelemetry.javaagent.tooling.Utils#getAgentClassLoader(). Classes are injected in the order provided. This is important if there is interdependency between helper classes that requires them to be injected in a specific order.

HelperInjector

public HelperInjector(String requestingName,
                      Map<String,byte[]> helperMap)

Method Detail

forDynamicTypes

public static HelperInjector forDynamicTypes(String requestingName,
                                             Collection<net.bytebuddy.dynamic.DynamicType.Unloaded<?>> helpers)

transform

public net.bytebuddy.dynamic.DynamicType.Builder<?> transform(net.bytebuddy.dynamic.DynamicType.Builder<?> builder,
                                                              net.bytebuddy.description.type.TypeDescription typeDescription,
                                                              ClassLoader classLoader,
                                                              net.bytebuddy.utility.JavaModule module)

Specified by:

transform in interface net.bytebuddy.agent.builder.AgentBuilder.Transformer

isInjectedClass

public static boolean isInjectedClass(Class<?> c)