org.apache.flink.util

类 FlinkUserCodeClassLoaders.SafetyNetWrapperClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.apache.flink.util.MutableURLClassLoader

org.apache.flink.util.FlinkUserCodeClassLoaders.SafetyNetWrapperClassLoader

所有已实现的接口:

Closeable, AutoCloseable

封闭类:

FlinkUserCodeClassLoaders

@Internal
public static class FlinkUserCodeClassLoaders.SafetyNetWrapperClassLoader
extends MutableURLClassLoader

Ensures that holding a reference on the context class loader outliving the scope of user code does not prevent the user classloader to be garbage collected (FLINK-16245).

This classloader delegates to the actual user classloader. Upon close(), the delegate is nulled and can be garbage collected. Additional class resolution will be resolved solely through the bootstrap classloader and most likely result in ClassNotFound exceptions.

字段概要

字段

限定符和类型	字段和说明
protected FlinkUserCodeClassLoader	inner

构造器概要

构造器

限定符	构造器和说明
protected	SafetyNetWrapperClassLoader(FlinkUserCodeClassLoader inner, ClassLoader parent)

方法概要

限定符和类型	方法和说明
void	addURL(URL url)
void	close()
MutableURLClassLoader	copy() Copy the classloader for each job and these jobs can add their jar files to the classloader independently.
URL	getResource(String name)
Enumeration<URL>	getResources(String name)
URL[]	getURLs()
Class<?>	loadClass(String name)
protected Class<?>	loadClass(String name, boolean resolve)

从类继承的方法 java.net.URLClassLoader

definePackage, findClass, findResource, findResources, getPermissions, getResourceAsStream, 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, 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

字段详细资料

inner

protected volatile FlinkUserCodeClassLoader inner

构造器详细资料

SafetyNetWrapperClassLoader

protected SafetyNetWrapperClassLoader(FlinkUserCodeClassLoader inner,
                                      ClassLoader parent)

方法详细资料

close

public void close()

指定者:

close 在接口中 Closeable

指定者:

close 在接口中 AutoCloseable

覆盖:

close 在类中 URLClassLoader

loadClass

public Class<?> loadClass(String name)
                   throws ClassNotFoundException

覆盖:

loadClass 在类中 ClassLoader

抛出:

ClassNotFoundException

loadClass

protected Class<?> loadClass(String name,
                             boolean resolve)
                      throws ClassNotFoundException

覆盖:

loadClass 在类中 ClassLoader

抛出:

ClassNotFoundException

addURL

public void addURL(URL url)

覆盖:

addURL 在类中 MutableURLClassLoader

copy

public MutableURLClassLoader copy()

从类复制的说明: MutableURLClassLoader

Copy the classloader for each job and these jobs can add their jar files to the classloader independently.

指定者:

copy 在类中 MutableURLClassLoader

返回:

the copied classloader

getResource

public URL getResource(String name)

覆盖:

getResource 在类中 ClassLoader

getResources

public Enumeration<URL> getResources(String name)
                              throws IOException

覆盖:

getResources 在类中 ClassLoader

抛出:

IOException

getURLs

public URL[] getURLs()

覆盖:

getURLs 在类中 URLClassLoader