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Tynamo Security package for Tapestry 5 based on Shiro Security

There is a newer version: 0.9.0

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.tynamo.security;

import org.apache.tapestry5.model.MutableComponentModel;
import org.apache.tapestry5.services.*;
import org.tynamo.shiro.extension.authz.aop.AopHelper;
import org.tynamo.shiro.extension.authz.aop.DefaultSecurityInterceptor;
import org.tynamo.shiro.extension.authz.aop.SecurityInterceptor;

import java.lang.annotation.Annotation;
import java.util.List;


/**
 * Transform components based on annotation.
 * 
 * Support annotation on method.
 * 

 * The following rules
 * 
 * Annotations on methods are not inherited.
 * The annotations only in target class, unlike services 
 * 
 * 
 *
 * @see org.tynamo.security.services.SecurityModule#buildSecurityFilter(org.slf4j.Logger,
 *      org.apache.tapestry5.services.ComponentEventLinkEncoder,
 *      org.apache.tapestry5.services.ComponentClassResolver,
 *      org.tynamo.security.services.ClassInterceptorsCache)
 */
public class ShiroAnnotationWorker implements ComponentClassTransformWorker
{

	@Override
	public void transform(ClassTransformation transformation,
	                      MutableComponentModel model)
	{

		for (Class annotationClass : AopHelper.getAutorizationAnnotationClasses())
		{

			List methodsToTransform =
					transformation.findMethodsWithAnnotation(annotationClass);

			for (TransformMethodSignature tm : methodsToTransform)
			{
				Annotation annotation = transformation.getMethodAnnotation(tm, annotationClass);
				processTransform(transformation, tm, annotation);
			}
		}
	}

	private void processTransform(ClassTransformation transformation,
	                              TransformMethodSignature tm, Annotation annotation)
	{
		final SecurityInterceptor interceptor = new DefaultSecurityInterceptor(annotation);

		ComponentMethodAdvice advice = new ComponentMethodAdvice()
		{
			public void advise(ComponentMethodInvocation invocation)
			{
				interceptor.intercept();
				invocation.proceed();
			}
		};

		transformation.advise(tm, advice);

	}

}