io.jsonwebtoken.impl.lang

Class Services

java.lang.Object

io.jsonwebtoken.impl.lang.Services

public final class Services
extends Object

Helper class for loading services from the classpath, using a ServiceLoader. Decouples loading logic for better separation of concerns and testability.

Method Summary

Methods

Modifier and Type	Method and Description
static <T> T	get(Class<T> spi) Returns the first available implementation for the given SPI class, checking an internal thread-safe cache first, and, if not found, using a ServiceLoader to find implementations.
static void	reload() Clears internal cache of service singletons.

Methods inherited from class java.lang.Object

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

Method Detail

get

public static <T> T get(Class<T> spi)

Returns the first available implementation for the given SPI class, checking an internal thread-safe cache first, and, if not found, using a ServiceLoader to find implementations. When multiple implementations are available it will return the first one that it encounters. There is no guarantee with regard to ordering.

Type Parameters:

T - The type of the SPI

Parameters:

spi - The class of the Service Provider Interface

Returns:

The first available instance of the service.

Throws:

UnavailableImplementationException - When no implementation of the SPI class can be found.

Since:

0.12.4

reload

public static void reload()

Clears internal cache of service singletons. This is useful when testing, or for applications that dynamically change classloaders.