org.forgerock.openam.scripting.timeouts

Class ObservedContextFactory

java.lang.Object

org.mozilla.javascript.ContextFactory

org.forgerock.openam.scripting.timeouts.ObservedContextFactory

public class ObservedContextFactory
extends org.mozilla.javascript.ContextFactory

This factory is used to provide contexts to the Rhino JavaScript engine which are responsible for stopping the engine's execution of a script if the provided timeout is configured. The length of time for a timeout is read from the StandardScriptEngineManager. As a singleton, it can act to indicate to this factory when the server configuration for the scripted auth module has been altered. By overriding the observeInstructionCount function, and setting the instructionObserverThreshold low, the context is able to detect when it has gone over its timelimit. In this case, it will throw a runtime exception, which will prevent any further execution in this engine.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	ObservedContextFactory.ObservedJavaScriptContext This Context is configured in such a way that we are able to ensure we can determine the length of time that the script has been running.

Nested classes/interfaces inherited from class org.mozilla.javascript.ContextFactory

org.mozilla.javascript.ContextFactory.GlobalSetter, org.mozilla.javascript.ContextFactory.Listener

Constructor Summary

Constructors

Constructor and Description
ObservedContextFactory(StandardScriptEngineManager manager)

Method Summary

Modifier and Type	Method and Description
protected org.mozilla.javascript.Context	makeContext()
protected void	observeInstructionCount(org.mozilla.javascript.Context cx, int instructionCount)

Methods inherited from class org.mozilla.javascript.ContextFactory

addListener, call, checkNotSealed, createClassLoader, doTopCall, enter, enterContext, enterContext, exit, getApplicationClassLoader, getE4xImplementationFactory, getGlobal, getGlobalSetter, hasExplicitGlobal, hasFeature, initApplicationClassLoader, initGlobal, isSealed, onContextCreated, onContextReleased, removeListener, seal

Methods inherited from class java.lang.Object

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

Constructor Detail

ObservedContextFactory

public ObservedContextFactory(StandardScriptEngineManager manager)

Method Detail

makeContext

protected org.mozilla.javascript.Context makeContext()

Overrides:

makeContext in class org.mozilla.javascript.ContextFactory

observeInstructionCount

protected void observeInstructionCount(org.mozilla.javascript.Context cx,
                                       int instructionCount)

Overrides:

observeInstructionCount in class org.mozilla.javascript.ContextFactory

See Also:

makeContext()