Package org.apache.flink.runtime.concurrent

Class ClassLoadingUtils

java.lang.Object

org.apache.flink.runtime.concurrent.ClassLoadingUtils

public class ClassLoadingUtils
extends Object

Classloading utilities.

Constructor Summary

Constructors

Constructor	Description
ClassLoadingUtils()

Method Summary

Modifier and Type	Method	Description
static <T> CompletableFuture<T>	guardCompletionWithContextClassLoader(CompletableFuture<T> future, ClassLoader contextClassLoader)
static <T,E extends Throwable> T	runWithContextClassLoader(org.apache.flink.util.function.SupplierWithException<T,E> supplier, ClassLoader contextClassLoader)	Runs the given supplier in a TemporaryClassLoaderContext based on the given classloader.
static <T extends Throwable> void	runWithContextClassLoader(org.apache.flink.util.function.ThrowingRunnable<T> runnable, ClassLoader contextClassLoader)	Runs the given runnable in a TemporaryClassLoaderContext to prevent the plugin class loader from leaking into Flink.
static Runnable	withContextClassLoader(Runnable runnable, ClassLoader contextClassLoader)	Wraps the given runnable in a TemporaryClassLoaderContext to prevent the plugin class loader from leaking into Flink.
static Executor	withContextClassLoader(Executor executor, ClassLoader contextClassLoader)	Wraps the given executor such that all submitted are runnables are run in a TemporaryClassLoaderContext based on the given classloader.

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassLoadingUtils

public ClassLoadingUtils()

Method Detail

withContextClassLoader

public static Runnable withContextClassLoader(Runnable runnable,
                                              ClassLoader contextClassLoader)

Wraps the given runnable in a TemporaryClassLoaderContext to prevent the plugin class loader from leaking into Flink.

Parameters:

runnable - runnable to wrap

contextClassLoader - class loader that should be set as the context class loader

Returns:

wrapped runnable

withContextClassLoader

public static Executor withContextClassLoader(Executor executor,
                                              ClassLoader contextClassLoader)

Wraps the given executor such that all submitted are runnables are run in a TemporaryClassLoaderContext based on the given classloader.

Parameters:

executor - executor to wrap

contextClassLoader - class loader that should be set as the context class loader

Returns:

wrapped executor

runWithContextClassLoader

public static <T extends Throwable> void runWithContextClassLoader(org.apache.flink.util.function.ThrowingRunnable<T> runnable,
                                                                   ClassLoader contextClassLoader)
                                                            throws T extends Throwable

Runs the given runnable in a TemporaryClassLoaderContext to prevent the plugin class loader from leaking into Flink.

Parameters:

runnable - runnable to run

contextClassLoader - class loader that should be set as the context class loader

Throws:

T extends Throwable

runWithContextClassLoader

public static <T,E extends Throwable> T runWithContextClassLoader(org.apache.flink.util.function.SupplierWithException<T,E> supplier,
                                                                        ClassLoader contextClassLoader)
                                                                 throws E extends Throwable

Runs the given supplier in a TemporaryClassLoaderContext based on the given classloader.

Parameters:

supplier - supplier to run

contextClassLoader - class loader that should be set as the context class loader

Throws:

E extends Throwable

guardCompletionWithContextClassLoader

public static <T> CompletableFuture<T> guardCompletionWithContextClassLoader(CompletableFuture<T> future,
                                                                             ClassLoader contextClassLoader)