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package org.glassfish.jersey.server.internal.routing;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.UndeclaredThrowableException;
import java.security.PrivilegedAction;
import java.util.List;
import javax.ws.rs.NotFoundException;
import javax.ws.rs.ProcessingException;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.SecurityContext;
import org.glassfish.jersey.internal.inject.Injections;
import org.glassfish.jersey.server.SubjectSecurityContext;
import org.glassfish.jersey.server.internal.JerseyResourceContext;
import org.glassfish.jersey.server.internal.LocalizationMessages;
import org.glassfish.jersey.server.internal.process.MappableException;
import org.glassfish.jersey.server.internal.process.RequestProcessingContext;
import org.glassfish.jersey.server.model.Resource;
import org.glassfish.jersey.server.model.ResourceMethod;
import org.glassfish.jersey.server.monitoring.RequestEvent;
import org.glassfish.jersey.server.spi.internal.ParamValueFactoryWithSource;
import org.glassfish.jersey.server.spi.internal.ParameterValueHelper;
import org.glassfish.hk2.api.ServiceLocator;
/**
* An methodAcceptorPair to accept sub-resource requests.
* It first retrieves the sub-resource instance by invoking the given model method.
* Then the {@link RuntimeLocatorModelBuilder} is used to generate corresponding methodAcceptorPair.
* Finally the generated methodAcceptorPair is invoked to return the request methodAcceptorPair chain.
*
*
* @author Jakub Podlesak (jakub.podlesak at oracle.com)
* @author Michal Gajdos
* @author Miroslav Fuksa
*/
final class SubResourceLocatorRouter implements Router {
private final ResourceMethod locatorModel;
private final List> valueProviders;
private final RuntimeLocatorModelBuilder runtimeLocatorBuilder;
private final JerseyResourceContext resourceContext;
private final ServiceLocator locator;
/**
* Create a new sub-resource locator router.
*
* @param locator HK2 locator.
* @param locatorModel resource locator method model.
* @param resourceContext resource context to bind sub-resource locator singleton instances.
* @param runtimeLocatorBuilder original runtime model builder.
*/
SubResourceLocatorRouter(final ServiceLocator locator,
final ResourceMethod locatorModel,
final JerseyResourceContext resourceContext,
final RuntimeLocatorModelBuilder runtimeLocatorBuilder) {
this.runtimeLocatorBuilder = runtimeLocatorBuilder;
this.locatorModel = locatorModel;
this.resourceContext = resourceContext;
this.locator = locator;
this.valueProviders = ParameterValueHelper.createValueProviders(locator, locatorModel.getInvocable());
}
@Override
public Continuation apply(final RequestProcessingContext processingContext) {
Object subResourceInstance = getResource(processingContext);
if (subResourceInstance == null) {
throw new NotFoundException();
}
final RoutingContext routingContext = processingContext.routingContext();
final LocatorRouting routing;
if (subResourceInstance instanceof Resource) {
// Caching here is disabled by default. It can be enabled by setting
// ServerProperties.SUBRESOURCE_LOCATOR_CACHE_JERSEY_RESOURCE_ENABLED to true.
routing = runtimeLocatorBuilder.getRouting((Resource) subResourceInstance);
} else {
Class locatorClass = subResourceInstance.getClass();
if (locatorClass.isAssignableFrom(Class.class)) {
// subResourceInstance is class itself
locatorClass = (Class) subResourceInstance;
if (!runtimeLocatorBuilder.isCached(locatorClass)) {
// If we can't create an instance of the class, don't proceed.
subResourceInstance = Injections.getOrCreate(locator, locatorClass);
}
}
routingContext.pushMatchedResource(subResourceInstance);
resourceContext.bindResourceIfSingleton(subResourceInstance);
routing = runtimeLocatorBuilder.getRouting(locatorClass);
}
routingContext.pushLocatorSubResource(routing.locator.getResources().get(0));
processingContext.triggerEvent(RequestEvent.Type.SUBRESOURCE_LOCATED);
return Continuation.of(processingContext, routing.router);
}
private Object getResource(final RequestProcessingContext context) {
final Object resource = context.routingContext().peekMatchedResource();
final Method handlingMethod = locatorModel.getInvocable().getHandlingMethod();
final Object[] parameterValues = ParameterValueHelper.getParameterValues(valueProviders);
context.triggerEvent(RequestEvent.Type.LOCATOR_MATCHED);
final PrivilegedAction invokeMethodAction = new PrivilegedAction() {
@Override
public Object run() {
try {
return handlingMethod.invoke(resource, parameterValues);
} catch (IllegalAccessException | IllegalArgumentException | UndeclaredThrowableException ex) {
throw new ProcessingException(LocalizationMessages.ERROR_RESOURCE_JAVA_METHOD_INVOCATION(), ex);
} catch (final InvocationTargetException ex) {
final Throwable cause = ex.getCause();
if (cause instanceof WebApplicationException) {
throw (WebApplicationException) cause;
}
// handle all exceptions as potentially mappable (incl. ProcessingException)
throw new MappableException(cause);
} catch (final Throwable t) {
throw new ProcessingException(t);
}
}
};
final SecurityContext securityContext = context.request().getSecurityContext();
return (securityContext instanceof SubjectSecurityContext)
? ((SubjectSecurityContext) securityContext).doAsSubject(invokeMethodAction) : invokeMethodAction.run();
}
}