org.testifyproject.jvnet.hk2.internal.MethodInterceptorHandler Maven / Gradle / Ivy
The newest version!
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2013-2015 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 org.testifyproject.testifyprojectpliance 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.
*/
package org.testifyproject.jvnet.hk2.internal;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.RandomAccess;
import org.testifyproject.aopalliance.intercept.MethodInterceptor;
import org.testifyproject.aopalliance.intercept.MethodInvocation;
import org.testifyproject.glassfish.hk2.api.AOPProxyCtl;
import org.testifyproject.glassfish.hk2.api.ActiveDescriptor;
import org.testifyproject.glassfish.hk2.api.HK2Invocation;
import org.testifyproject.glassfish.hk2.utilities.reflection.Logger;
import org.testifyproject.glassfish.hk2.utilities.reflection.ReflectionHelper;
import org.testifyproject.util.proxy.MethodHandler;
/**
* This is the handler that runs the aopalliance method interception
*
* @author jwells
*
*/
public class MethodInterceptorHandler implements MethodHandler {
private final static boolean DEBUG_INTERCEPTION = AccessController.doPrivileged(new PrivilegedAction() {
@Override
public Boolean run() {
return Boolean.parseBoolean(
System.getProperty("org.testifyproject.jvnet.hk2.properties.tracing.interceptors", "false"));
}
});
private final ServiceLocatorImpl locator;
private final Map> interceptorLists;
private final ActiveDescriptor underlyingDescriptor;
/* package */ MethodInterceptorHandler(ServiceLocatorImpl locator,
ActiveDescriptor underlyingDescriptor,
Map> interceptorLists) {
this.locator = locator;
this.interceptorLists = interceptorLists;
this.underlyingDescriptor = underlyingDescriptor;
}
/* (non-Javadoc)
* @see org.testifyproject.util.proxy.MethodHandler#invoke(java.lang.Object, java.lang.reflect.Method, java.lang.reflect.Method, java.lang.Object[])
*/
@Override
public Object invoke(Object self, Method thisMethod, Method proceed, Object[] args)
throws Throwable {
if (thisMethod.getName().equals(AOPProxyCtl.UNDERLYING_METHOD_NAME)) {
return underlyingDescriptor;
}
List interceptors = interceptorLists.get(thisMethod);
if (interceptors == null || interceptors.isEmpty()) {
return ReflectionHelper.invoke(self, proceed, args, locator.getNeutralContextClassLoader());
}
if (!(interceptors instanceof RandomAccess)) {
// Make sure we are indexable
interceptors = new ArrayList(interceptors);
}
MethodInterceptor nextInterceptor = interceptors.get(0);
long aggregateInterceptionTime = 0L;
if (DEBUG_INTERCEPTION) {
aggregateInterceptionTime = System.currentTimeMillis();
Logger.getLogger().debug("Invoking interceptor " + nextInterceptor.getClass().getName() +
" index 0 in stack of " + interceptors.size() + " of method " + thisMethod);
}
try {
return nextInterceptor.invoke(new MethodInvocationImpl(args,
thisMethod, self, interceptors, 0, proceed, null));
}
finally {
if (DEBUG_INTERCEPTION) {
aggregateInterceptionTime = System.currentTimeMillis() - aggregateInterceptionTime;
Logger.getLogger().debug("Interceptor " + nextInterceptor.getClass().getName() +
" index 0 took an aggregate of " + aggregateInterceptionTime + " milliseconds");
}
}
}
private class MethodInvocationImpl implements MethodInvocation, HK2Invocation {
private final Object[] arguments; // Live!
private final Method method;
private final Object myself;
private final List interceptors;
private final int index;
private final Method proceed;
private HashMap userData;
private MethodInvocationImpl(Object[] arguments,
Method method,
Object myself,
List interceptors,
int index,
Method proceed,
HashMap userData) {
this.arguments = arguments;
this.method = method;
this.myself = myself;
this.interceptors = interceptors;
this.index = index;
this.proceed = proceed;
this.userData = userData;
}
@Override
public Object[] getArguments() {
return arguments;
}
@Override
public AccessibleObject getStaticPart() {
return method;
}
@Override
public Object getThis() {
return myself;
}
@Override
public Method getMethod() {
return method;
}
@Override
public Object proceed() throws Throwable {
int newIndex = index + 1;
if (newIndex >= interceptors.size()) {
long methodTime = 0L;
if (DEBUG_INTERCEPTION) {
methodTime = System.currentTimeMillis();
}
try {
// Call the actual method
return ReflectionHelper.invoke(myself, proceed, arguments, locator.getNeutralContextClassLoader());
}
finally {
if (DEBUG_INTERCEPTION) {
methodTime = System.currentTimeMillis() - methodTime;
Logger.getLogger().debug("Time to call actual intercepted method " + method + " is " + methodTime + " milliseconds");
}
}
}
// Invoke the next interceptor
MethodInterceptor nextInterceptor = interceptors.get(newIndex);
long aggregateInterceptionTime = 0L;
if (DEBUG_INTERCEPTION) {
aggregateInterceptionTime = System.currentTimeMillis();
Logger.getLogger().debug("Invoking interceptor " + nextInterceptor.getClass().getName() +
" index " + newIndex + " in stack of " + interceptors.size() +
" of method " + method);
}
try {
return nextInterceptor.invoke(new MethodInvocationImpl(arguments,
method, myself, interceptors, newIndex, proceed, userData));
}
finally {
if (DEBUG_INTERCEPTION) {
aggregateInterceptionTime = System.currentTimeMillis() - aggregateInterceptionTime;
Logger.getLogger().debug("Interceptor " + nextInterceptor.getClass().getName() +
" index " + newIndex +
" took an aggregate of " + aggregateInterceptionTime + " milliseconds");
}
}
}
/* (non-Javadoc)
* @see org.testifyproject.glassfish.hk2.api.HK2Invocation#setUserData(java.lang.String, java.lang.Object)
*/
@Override
public void setUserData(String key, Object data) {
if (key == null) throw new IllegalArgumentException();
if (userData == null) userData = new HashMap();
if (data == null) {
userData.remove(key);
}
else {
userData.put(key, data);
}
}
/* (non-Javadoc)
* @see org.testifyproject.glassfish.hk2.api.HK2Invocation#getUserData(java.lang.String)
*/
@Override
public Object getUserData(String key) {
if (key == null) throw new IllegalArgumentException();
if (userData == null) return null;
return userData.get(key);
}
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy