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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
// Portions Copyright [2021] [Payara Foundation and/or its affiliates]
package org.glassfish.admin.rest.adapter;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.ServiceConfigurationError;
import org.glassfish.jersey.internal.ServiceFinder;
import org.glassfish.jersey.internal.ServiceFinder.ServiceIteratorProvider;
import org.glassfish.jersey.internal.spi.AutoDiscoverable;
/** Goal of this finder is to be fast and efficient.
* It is hardcoded implementation.
*
* @author martinmares
*/
public class AdminJerseyServiceIteratorProvider extends ServiceIteratorProvider {
private static final Map services = new HashMap();
static {
// services.put(ContainerProvider.class.getName(), new String[] {
// "org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpContainerProvider"
// });
services.put(AutoDiscoverable.class.getName(), new String[] {
// "org.glassfish.jersey.server.validation.internal.ValidationAutoDiscoverable",
// "org.glassfish.jersey.jsonp.internal.JsonProcessingAutoDiscoverable",
"org.glassfish.jersey.server.filter.internal.ServerFiltersAutoDiscoverable",
// "org.glassfish.jersey.server.wadl.internal.WadlAutoDiscoverable"
});
// services.put(ServerComponentProvider.class.getName(), new String[] {
// "org.glassfish.jersey.gf.cdi.CdiComponentProvider",
// "org.glassfish.jersey.gf.ejb.EjbComponentProvider"
// });
}
private static final ThreadLocal applyDefinedValues = new ThreadLocal() {
@Override
protected Boolean initialValue() {
return Boolean.FALSE;
}
};
private static final ServiceIteratorProvider defaultProvider = new ServiceFinder.DefaultServiceIteratorProvider();
public AdminJerseyServiceIteratorProvider() {
applyDefinedValues.set(Boolean.TRUE);
}
public void disable() {
applyDefinedValues.remove();
}
private String[] getServiceNames(Class service, String serviceName) {
if (serviceName == null) {
return services.get(service.getName());
} else {
return services.get(serviceName);
}
}
@Override
public Iterator> createClassIterator(Class service, String serviceName, ClassLoader loader, boolean ignoreOnClassNotFound) {
final String[] values = getServiceNames(service, serviceName);
if (!applyDefinedValues.get() || values == null) {
return defaultProvider.createClassIterator(service, serviceName, loader, ignoreOnClassNotFound);
} else {
return new ClassIterator>(services.get(serviceName), loader, ignoreOnClassNotFound);
}
}
@Override
public Iterator createIterator(final Class service, final String serviceName, final ClassLoader loader, final boolean ignoreOnClassNotFound) {
final String[] values = getServiceNames(service, serviceName);
if (!applyDefinedValues.get() || values == null) {
return defaultProvider.createIterator(service, serviceName, loader, ignoreOnClassNotFound);
} else {
return new Iterator() {
Iterator> delegate = createClassIterator(service, serviceName, loader, ignoreOnClassNotFound);
@Override
public boolean hasNext() {
return delegate.hasNext();
}
@Override
public T next() {
try {
return delegate.next().newInstance();
} catch (Exception ex) {
throw new ServiceConfigurationError(ex.getLocalizedMessage(), ex);
}
}
@Override
public void remove() {
delegate.remove();
}
};
}
}
public static class ClassIterator implements Iterator {
private final String[] names;
private final ClassLoader classLoader;
private final boolean ignoreOnClassNotFound;
private int index = -1;
private String clazzName;
private T clazz;
private ClassIterator(String[] names, ClassLoader classLoader, boolean ignoreOnClassNotFound) {
this.names = names;
this.classLoader = classLoader;
this.ignoreOnClassNotFound = ignoreOnClassNotFound;
}
@Override
public boolean hasNext() {
if (clazzName != null) {
return true;
}
if (names == null) {
return false;
}
//Find next index
while (clazzName == null) {
if ((++index) >= names.length) {
return false;
}
clazzName = names[index];
if (ignoreOnClassNotFound) {
try {
clazz = (T) Class.forName(clazzName, true, classLoader);
} catch (ClassNotFoundException ex) {
//Search for next one
clazzName = null;
}
}
}
return true;
}
@Override
public T next() {
if (hasNext()) {
try {
if (clazz != null) {
return clazz;
} else {
return (T) Class.forName(clazzName, true, classLoader);
}
} catch (Exception ex) {
throw new ServiceConfigurationError(ex.getLocalizedMessage(), ex);
} finally {
clazz = null;
clazzName = null;
}
} else {
throw new NoSuchElementException();
}
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
}
}