Package hudson

Class ExtensionFinder.GuiceFinder

java.lang.Object

hudson.ExtensionFinder

hudson.ExtensionFinder.GuiceFinder

All Implemented Interfaces:

ExtensionPoint

Enclosing class:

ExtensionFinder

@Extension
public static class ExtensionFinder.GuiceFinder
extends ExtensionFinder

Discovers components via sezpoz but instantiates them by using Guice.

Nested Class Summary

Nested classes/interfaces inherited from class hudson.ExtensionFinder

ExtensionFinder.DefaultGuiceExtensionAnnotation, ExtensionFinder.GuiceExtensionAnnotation<T extends Annotation>, ExtensionFinder.GuiceFinder, ExtensionFinder.Sezpoz

Nested classes/interfaces inherited from interface hudson.ExtensionPoint

ExtensionPoint.LegacyInstancesAreScopedToHudson

Field Summary

Fields

Modifier and Type	Field	Description
static final com.google.inject.Scope	FAULT_TOLERANT_SCOPE	Scope that allows a failure to create a component, and change the value to null.

Constructor Summary

Constructors

Constructor	Description
GuiceFinder()

Method Summary

Modifier and Type	Method	Description
<U> Collection<ExtensionComponent<U>>	find(Class<U> type, Hudson jenkins)	Discover extensions of the given type.
com.google.inject.Injector	getContainer()
ExtensionComponentSet	refresh()	The basic idea is: List up delta as a series of modules
void	scout(Class extensionType, Hudson hudson)	TODO: need to learn more about concurrent access to Injector and how it interacts with classloading.

Methods inherited from class hudson.ExtensionFinder

_find, findExtensions, isRefreshable

Methods inherited from class java.lang.Object

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

Field Details

FAULT_TOLERANT_SCOPE

public static final com.google.inject.Scope FAULT_TOLERANT_SCOPE

Scope that allows a failure to create a component, and change the value to null.

This is necessary as a failure to load one plugin shouldn't fail the startup of the entire Jenkins. Instead, we should just drop the failing plugins.

Constructor Details

GuiceFinder

public GuiceFinder()

Method Details

getContainer

public com.google.inject.Injector getContainer()

refresh

public ExtensionComponentSet refresh()
                              throws ExtensionRefreshException

The basic idea is:

• List up delta as a series of modules

Specified by:

refresh in class ExtensionFinder

Returns:

never null

Throws:

ExtensionRefreshException

See Also:

• ExtensionFinder.isRefreshable()

find

public <U> Collection<ExtensionComponent<U>> find(Class<U> type,
 Hudson jenkins)

Description copied from class: ExtensionFinder

Discover extensions of the given type.

This method is called only once per the given type after all the plugins are loaded, so implementations need not worry about caching.

This method should return all the known components at the time of the call, including those that are discovered later via ExtensionFinder.refresh(), even though those components are separately returned in ExtensionComponentSet.

Specified by:

find in class ExtensionFinder

Type Parameters:

U - The type of the extension points. This is not bound to ExtensionPoint because of Descriptor, which by itself doesn't implement ExtensionPoint for a historical reason.

Parameters:

jenkins - Jenkins whose behalf this extension finder is performing lookup.

Returns:

Can be empty but never null.

scout

public void scout(Class extensionType,
 Hudson hudson)

TODO: need to learn more about concurrent access to Injector and how it interacts with classloading.

Overrides:

scout in class ExtensionFinder