Package io.opentelemetry.javaagent.tooling

Class ExtensionClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

io.opentelemetry.javaagent.tooling.ExtensionClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class ExtensionClassLoader
extends URLClassLoader

This class creates a class loader which encapsulates arbitrary extensions for Otel Java instrumentation agent. Such extensions may include SDK components (exporters or propagators) and additional instrumentations. They have to be isolated and shaded to reduce interference with the user application and to make it compatible with shaded SDK used by the agent. Thus each extension jar gets a separate class loader and all of them are aggregated with the help of MultipleParentClassLoader.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	EXTENSIONS_CONFIG

Method Summary

Modifier and Type	Method	Description
static ClassLoader	getInstance(ClassLoader parent, File javaagentFile, boolean isSecurityManagerSupportEnabled, EarlyInitAgentConfig earlyConfig)
protected PermissionCollection	getPermissions(CodeSource codesource)

Methods inherited from class java.net.URLClassLoader

addURL, close, definePackage, findClass, findResource, findResources, getResourceAsStream, getURLs, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader

defineClass, defineClass

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findSystemClass, getClassLoadingLock, getDefinedPackage, getDefinedPackages, getName, getPackage, getPackages, getParent, getPlatformClassLoader, getResource, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, loadClass, loadClass, registerAsParallelCapable, resolveClass, resources, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Field Details

EXTENSIONS_CONFIG

public static final String EXTENSIONS_CONFIG

See Also:

• Constant Field Values

Method Details

getInstance

public static ClassLoader getInstance(ClassLoader parent,
 File javaagentFile,
 boolean isSecurityManagerSupportEnabled,
 EarlyInitAgentConfig earlyConfig)

getPermissions

protected PermissionCollection getPermissions(CodeSource codesource)

Overrides:

getPermissions in class URLClassLoader