io.esastack.cabin.container.service.loader

类 JavaAgentClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

io.esastack.cabin.container.service.loader.AbstractClassLoader

io.esastack.cabin.container.service.loader.JavaAgentClassLoader

所有已实现的接口:

Closeable, AutoCloseable

public class JavaAgentClassLoader
extends AbstractClassLoader

By default, java agent jar URLs will be included in the SystemClassLoader classpath, if the APP is launched by CabinClassPathLauncher, the BizModuleClassLoader can load agent classes in local biz urls; But, if the APP is launched in a fat jar, the BizModuleClassLoader can not load agent classes in local biz urls; And, for LibModuleClassLoader, it could not be loaded by local lib urls. To make all the agent classes loaded by one unique ClassLoader, we filtered the 'Java Agent URLs' from biz URLs, And create a new type of ClassLoader to load them.

字段概要

从类继承的字段 io.esastack.cabin.container.service.loader.AbstractClassLoader

classLoaderService, moduleName, sharedClassService, sharedResourceService

构造器概要

构造器

构造器和说明
JavaAgentClassLoader(URL agentUrl)

方法概要

限定符和类型	方法和说明
URL	getAgentUrl()
protected URL	getResource0(String name) Pay attention to the priority of finding resource: jdk, exported, biz
protected Enumeration<URL>	getResources0(String name) Pay attention to the priority of finding resource: jdk, exported, biz
protected Class<?>	loadClass0(String name, boolean resolve) Why we need to load class from Biz and Libs?

从类继承的方法 io.esastack.cabin.container.service.loader.AbstractClassLoader

debugClassLoadMessage, getBizResource, getBizResources, getExportResource, getExportResources, getJavaAgentResource, getJavaAgentResources, getJdkResource, getJdkResources, getLocalResource, getLocalResources, getModuleName, getResource, getResources, loadAgentClass, loadBizClass, loadCabinClass, loadClass, loadClassFromClasspath, loadFromRecords, loadImportClassFromBiz, loadJdkClass, loadLocalClass, loadSharedClass, shouldImportClassFromBiz

从类继承的方法 java.net.URLClassLoader

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

从类继承的方法 java.security.SecureClassLoader

defineClass, defineClass

从类继承的方法 java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findLibrary, findLoadedClass, findSystemClass, getClassLoadingLock, getPackage, getPackages, getParent, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, registerAsParallelCapable, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

从类继承的方法 java.lang.Object

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

构造器详细资料

JavaAgentClassLoader

public JavaAgentClassLoader(URL agentUrl)

方法详细资料

getAgentUrl

public URL getAgentUrl()

loadClass0

protected Class<?> loadClass0(String name,
                              boolean resolve)
                       throws CabinLoaderException

Why we need to load class from Biz and Libs? Because the agent implementation may dependency some provided jars which is provided by users; In normal setup way, these jars will loaded by AppClassloader, same as agent jars.

指定者:

loadClass0 在类中 AbstractClassLoader

抛出:

CabinLoaderException

getResources0

protected Enumeration<URL> getResources0(String name)
                                  throws IOException

从类复制的说明: AbstractClassLoader

Pay attention to the priority of finding resource: jdk, exported, biz

指定者:

getResources0 在类中 AbstractClassLoader

抛出:

IOException

getResource0

protected URL getResource0(String name)

从类复制的说明: AbstractClassLoader

Pay attention to the priority of finding resource: jdk, exported, biz

指定者:

getResource0 在类中 AbstractClassLoader