org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jersey-server Show documentation
Show all versions of jersey-server Show documentation
Jersey core server implementation
/*
* Copyright (c) 2012, 2019 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.jersey.server.model.internal;
import java.lang.reflect.InvocationHandler;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.inject.Singleton;
import org.glassfish.jersey.internal.inject.InjectionManager;
import org.glassfish.jersey.internal.inject.Providers;
import org.glassfish.jersey.internal.util.collection.LazyValue;
import org.glassfish.jersey.internal.util.collection.Value;
import org.glassfish.jersey.internal.util.collection.Values;
import org.glassfish.jersey.server.internal.LocalizationMessages;
import org.glassfish.jersey.server.model.Invocable;
import org.glassfish.jersey.server.spi.internal.ResourceMethodInvocationHandlerProvider;
/**
* An injectable {@link ResourceMethodInvocationHandlerProvider resource method
* invocation handler provider} factory.
*
* When invoked, the factory iterates over the registered custom {@link ResourceMethodInvocationHandlerProvider
* resource method invocation handler providers} invoking their
* {@link ResourceMethodInvocationHandlerProvider#create(org.glassfish.jersey.server.model.Invocable) createPatternFor(...)}
* methods and returns the first non-null {@link InvocationHandler
* invocation handler} instance retrieved from the providers. If no custom providers
* are available, or if none of the providers returns a non-null invocation handler,
* in such case a default invocation handler provided by the factory is returned.
*
* @author Marek Potociar
*/
@Singleton
public final class ResourceMethodInvocationHandlerFactory implements ResourceMethodInvocationHandlerProvider {
private static final InvocationHandler DEFAULT_HANDLER = (target, method, args) -> method.invoke(target, args);
private static final Logger LOGGER = Logger.getLogger(ResourceMethodInvocationHandlerFactory.class.getName());
private final LazyValue> providers;
ResourceMethodInvocationHandlerFactory(InjectionManager injectionManager) {
this.providers = Values.lazy((Value>)
() -> Providers.getProviders(injectionManager, ResourceMethodInvocationHandlerProvider.class));
}
// ResourceMethodInvocationHandlerProvider
@Override
public InvocationHandler create(Invocable resourceMethod) {
for (ResourceMethodInvocationHandlerProvider provider : providers.get()) {
try {
InvocationHandler handler = provider.create(resourceMethod);
if (handler != null) {
return handler;
}
} catch (Exception e) {
LOGGER.log(Level.SEVERE, LocalizationMessages.ERROR_PROCESSING_METHOD(
resourceMethod,
provider.getClass().getName()), e);
}
}
return DEFAULT_HANDLER;
}
}