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A bundle project producing JAX-RS RI bundles. The primary artifact is an "all-in-one" OSGi-fied JAX-RS RI bundle (jaxrs-ri.jar). Attached to that are two compressed JAX-RS RI archives. The first archive (jaxrs-ri.zip) consists of binary RI bits and contains the API jar (under "api" directory), RI libraries (under "lib" directory) as well as all external RI dependencies (under "ext" directory). The secondary archive (jaxrs-ri-src.zip) contains buildable JAX-RS RI source bundle and contains the API jar (under "api" directory), RI sources (under "src" directory) as well as all external RI dependencies (under "ext" directory). The second archive also contains "build.xml" ANT script that builds the RI sources. To build the JAX-RS RI simply unzip the archive, cd to the created jaxrs-ri directory and invoke "ant" from the command line.

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/*
 * Copyright (c) 2017, 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.inject.hk2;

import java.lang.reflect.Field;
import java.lang.reflect.Type;
import java.util.HashSet;
import java.util.List;
import java.util.Objects;
import java.util.Set;
import java.util.function.Function;

import javax.ws.rs.core.Context;

import javax.inject.Inject;
import javax.inject.Singleton;

import org.glassfish.jersey.internal.inject.ContextInjectionResolver;
import org.glassfish.jersey.internal.inject.ForeignRequestScopeBridge;
import org.glassfish.jersey.internal.util.ReflectionHelper;
import org.glassfish.jersey.internal.util.collection.Cache;
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.process.internal.RequestScoped;

import org.glassfish.hk2.api.ActiveDescriptor;
import org.glassfish.hk2.api.Factory;
import org.glassfish.hk2.api.Injectee;
import org.glassfish.hk2.api.InjectionResolver;
import org.glassfish.hk2.api.ServiceHandle;
import org.glassfish.hk2.api.ServiceLocator;
import org.glassfish.hk2.api.TypeLiteral;
import org.glassfish.hk2.utilities.AbstractActiveDescriptor;
import org.glassfish.hk2.utilities.BuilderHelper;
import org.glassfish.hk2.utilities.InjecteeImpl;
import org.glassfish.hk2.utilities.binding.AbstractBinder;

/**
 * Injection resolver for {@link Context @Context} injection annotation.
 *
 * @author Marek Potociar
 * @author Jakub Podlesak
 */
@Singleton
public class ContextInjectionResolverImpl implements InjectionResolver, ContextInjectionResolver {

    /**
     * Context injection resolver binder.
     */
    public static final class Binder extends AbstractBinder {

        @Override
        protected void configure() {
            bind(ContextInjectionResolverImpl.class)
                    .to(new TypeLiteral>() {})
                    .to(new TypeLiteral>() {})
                    .to(ContextInjectionResolver.class)
                    .in(Singleton.class);
        }
    }

    @Inject
    private ServiceLocator serviceLocator;

    private final Cache> descriptorCache
            = new Cache<>(cacheKey -> serviceLocator.getInjecteeDescriptor(cacheKey.injectee));

    @Override
    public Object resolve(Injectee injectee, ServiceHandle root) {
        Type requiredType = injectee.getRequiredType();
        boolean isHk2Factory = ReflectionHelper.isSubClassOf(requiredType, Factory.class);
        Injectee newInjectee;

        if (isHk2Factory) {
            newInjectee = getFactoryInjectee(injectee, ReflectionHelper.getTypeArgument(requiredType, 0));
        } else {
            newInjectee = foreignRequestScopedInjecteeCache.apply(new CacheKey(injectee));
        }

        ActiveDescriptor ad = descriptorCache.apply(new CacheKey(newInjectee));

        if (ad != null) {
            final ServiceHandle handle = serviceLocator.getServiceHandle(ad, newInjectee);

            if (isHk2Factory) {
                return asFactory(handle);
            } else {
                return handle.getService();
            }
        }
        return null;
    }

    /**
     * Jersey Injection Resolver method that just populate HK2 injectee object and delegates the processing to HK2 Injection
     * Resolver.
     *
     * @param injectee The injection point this value is being injected into
     * @return result of the injection processing.
     */
    @Override
    public Object resolve(org.glassfish.jersey.internal.inject.Injectee injectee) {
        InjecteeImpl hk2injectee = toInjecteeImpl(injectee);

        // Delegate the call to HK2 Resolver, Service Handle is not need in the delegated processing.
        return resolve(hk2injectee, null);
    }

    private static InjecteeImpl toInjecteeImpl(org.glassfish.jersey.internal.inject.Injectee injectee) {
        InjecteeImpl hk2injectee = new InjecteeImpl() {
            @Override
            public Class getInjecteeClass() {
                return injectee.getInjecteeClass();
            }
        };
        hk2injectee.setRequiredType(injectee.getRequiredType());
        hk2injectee.setRequiredQualifiers(injectee.getRequiredQualifiers());
        hk2injectee.setParent(injectee.getParent());
        if (injectee.getInjecteeDescriptor() != null) {
            hk2injectee.setInjecteeDescriptor((ActiveDescriptor) injectee.getInjecteeDescriptor().get());
        }
        return hk2injectee;
    }

    private Factory asFactory(final ServiceHandle handle) {
        return new Factory() {
            @Override
            public Object provide() {
                return handle.getService();
            }

            @Override
            public void dispose(final Object instance) {
            }
        };
    }

    private Injectee getFactoryInjectee(final Injectee injectee, final Type requiredType) {
        return new RequiredTypeOverridingInjectee(injectee, requiredType);
    }

    private static class RequiredTypeOverridingInjectee extends InjecteeImpl {
        private RequiredTypeOverridingInjectee(final Injectee injectee, final Type requiredType) {
            super(injectee);
            setRequiredType(requiredType);
        }
    }

    private static class DescriptorOverridingInjectee extends InjecteeImpl {
        private DescriptorOverridingInjectee(final Injectee injectee, final ActiveDescriptor descriptor) {
            super(injectee);
            setInjecteeDescriptor(descriptor);
        }
    }

    @Override
    public boolean isConstructorParameterIndicator() {
        return true;
    }

    @Override
    public boolean isMethodParameterIndicator() {
        return false;
    }

    @Override
    public Class getAnnotation() {
        return Context.class;
    }

    private final Cache foreignRequestScopedInjecteeCache = new Cache<>(new Function() {
        @Override
        public Injectee apply(CacheKey cacheKey) {
            Injectee injectee = cacheKey.getInjectee();
            if (injectee.getParent() != null) {
                if (Field.class.isAssignableFrom(injectee.getParent().getClass())) {
                    Field f = (Field) injectee.getParent();
                    if (foreignRequestScopedComponents.get().contains(f.getDeclaringClass())) {
                        final Class clazz = f.getType();
                        if (serviceLocator.getServiceHandle(clazz).getActiveDescriptor().getScopeAnnotation()
                                                                                            == RequestScoped.class) {
                            final AbstractActiveDescriptor descriptor =
                                    BuilderHelper.activeLink(clazz)
                                            .to(clazz)
                                            .in(RequestScoped.class)
                                            .build();
                            return new DescriptorOverridingInjectee(injectee, descriptor);
                        }
                    }
                }
            }
            return injectee;
        }
    });

    private LazyValue>> foreignRequestScopedComponents = Values.lazy(
            (Value>>) this::getForeignRequestScopedComponents);

    private Set> getForeignRequestScopedComponents() {
        final List scopeBridges = serviceLocator.getAllServices(ForeignRequestScopeBridge.class);
        final Set> result = new HashSet<>();
        for (ForeignRequestScopeBridge bridge : scopeBridges) {
            final Set> requestScopedComponents = bridge.getRequestScopedComponents();
            if (requestScopedComponents != null) {
                result.addAll(requestScopedComponents);
            }
        }
        return result;
    }

    /**
     * Key dedicated for internal cache mechanism because two different {@link Injectee} Hk2 implementations comes from
     * Jersey side and HK2 side injection resolver.
     */
    private static class CacheKey {

        private final Injectee injectee;

        private final int hash;

        private CacheKey(Injectee injectee) {
            this.injectee = injectee;

            this.hash = Objects.hash(injectee.getInjecteeClass(),
                    injectee.getInjecteeDescriptor(),
                    injectee.getParent(),
                    injectee.getRequiredQualifiers(),
                    injectee.getRequiredType(),
                    injectee.getPosition());
        }

        private Injectee getInjectee() {
            return injectee;
        }

        @Override
        public boolean equals(Object o) {
            if (this == o) {
                return true;
            }
            if (!(o instanceof CacheKey)) {
                return false;
            }
            CacheKey cacheKey = (CacheKey) o;
            return this.hash == cacheKey.hash;
        }

        @Override
        public int hashCode() {
            return hash;
        }
    }
}
    

    

    

            

    

            



    
    






    
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