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authorrfeng <rfeng@13f79535-47bb-0310-9956-ffa450edef68>2009-09-18 16:43:41 +0000
committerrfeng <rfeng@13f79535-47bb-0310-9956-ffa450edef68>2009-09-18 16:43:41 +0000
commit28185a36579c352f340b79c385d1b91870186f43 (patch)
tree31ccac3404953d5f8664045e7a09a7719942b147 /java/sca/modules/core/src
parent911c30b9d3140d9f531c7eeff909b428265ebe69 (diff)
Remove the need of subclassing Proxy and JXM so that Tuscany can run on Google App Engine
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@816712 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'java/sca/modules/core/src')
-rw-r--r--java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CachedProxy.java70
-rw-r--r--java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/DefaultProxyFactoryExtensionPoint.java26
-rw-r--r--java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKProxyFactory.java60
3 files changed, 75 insertions, 81 deletions
diff --git a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CachedProxy.java b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CachedProxy.java
deleted file mode 100644
index e2467d2e5c..0000000000
--- a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/CachedProxy.java
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * 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.apache.tuscany.sca.core.invocation;
-
-import java.lang.reflect.Constructor;
-import java.lang.reflect.InvocationHandler;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Proxy;
-import java.util.WeakHashMap;
-
-public class CachedProxy extends Proxy {
- private static final long serialVersionUID = 783519311852563060L;
-
- protected CachedProxy(InvocationHandler handler) {
- super(handler);
- }
-
- // This is a cache containing the proxy class constructor for each business interface.
- // This improves performance compared to calling Proxy.newProxyInstance()
- // every time that a proxy is needed.
- private final static WeakHashMap<Class<?>, Constructor<?>> cache = new WeakHashMap<Class<?>, Constructor<?>>();
-
- public static Object newProxyInstance(ClassLoader classloader, Class<?> aclass[], InvocationHandler invocationhandler)
- throws IllegalArgumentException {
- try {
- if (invocationhandler == null)
- throw new NullPointerException();
- // Lookup cached constructor. aclass[0] is the reference's business interface.
- Constructor<?> proxyCTOR;
- synchronized (cache) {
- proxyCTOR = cache.get(aclass[0]);
- }
- if (proxyCTOR == null) {
- Class<?> proxyClass = getProxyClass(classloader, aclass);
- proxyCTOR = proxyClass.getConstructor(constructorParams);
- synchronized (cache) {
- cache.put(aclass[0], proxyCTOR);
- }
- }
- return proxyCTOR.newInstance(new Object[] {invocationhandler});
- } catch (NoSuchMethodException e) {
- throw new InternalError(e.toString());
- } catch (IllegalAccessException e) {
- throw new InternalError(e.toString());
- } catch (InstantiationException e) {
- throw new InternalError(e.toString());
- } catch (InvocationTargetException e) {
- throw new InternalError(e.toString());
- }
- }
-
- private static final Class<?> constructorParams[] = {InvocationHandler.class};
-
-}
diff --git a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/DefaultProxyFactoryExtensionPoint.java b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/DefaultProxyFactoryExtensionPoint.java
index bb212d5869..af6f039775 100644
--- a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/DefaultProxyFactoryExtensionPoint.java
+++ b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/DefaultProxyFactoryExtensionPoint.java
@@ -21,6 +21,7 @@ package org.apache.tuscany.sca.core.invocation;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.core.FactoryExtensionPoint;
+import org.apache.tuscany.sca.core.LifeCycleListener;
import org.apache.tuscany.sca.core.UtilityExtensionPoint;
import org.apache.tuscany.sca.core.invocation.impl.JDKProxyFactory;
import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
@@ -31,7 +32,7 @@ import org.apache.tuscany.sca.invocation.MessageFactory;
*
* @version $Rev$ $Date$
*/
-public class DefaultProxyFactoryExtensionPoint implements ProxyFactoryExtensionPoint {
+public class DefaultProxyFactoryExtensionPoint implements ProxyFactoryExtensionPoint, LifeCycleListener {
private InterfaceContractMapper interfaceContractMapper;
private MessageFactory messageFactory;
@@ -41,10 +42,10 @@ public class DefaultProxyFactoryExtensionPoint implements ProxyFactoryExtensionP
public DefaultProxyFactoryExtensionPoint(ExtensionPointRegistry extensionPoints) {
UtilityExtensionPoint utilities = extensionPoints.getExtensionPoint(UtilityExtensionPoint.class);
this.interfaceContractMapper = utilities.getUtility(InterfaceContractMapper.class);
-
+
FactoryExtensionPoint modelFactories = extensionPoints.getExtensionPoint(FactoryExtensionPoint.class);
this.messageFactory = modelFactories.getFactory(MessageFactory.class);
-
+
interfaceFactory = new JDKProxyFactory(messageFactory, interfaceContractMapper);
}
@@ -72,4 +73,23 @@ public class DefaultProxyFactoryExtensionPoint implements ProxyFactoryExtensionP
}
+ public void start() {
+ if (interfaceFactory instanceof LifeCycleListener) {
+ ((LifeCycleListener)interfaceFactory).start();
+ }
+ if (classFactory instanceof LifeCycleListener) {
+ ((LifeCycleListener)classFactory).start();
+ }
+ }
+
+ public void stop() {
+ if (interfaceFactory instanceof LifeCycleListener) {
+ ((LifeCycleListener)interfaceFactory).stop();
+ }
+ if (classFactory instanceof LifeCycleListener) {
+ ((LifeCycleListener)classFactory).stop();
+ }
+
+ }
+
}
diff --git a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKProxyFactory.java b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKProxyFactory.java
index ed994ce372..e0d0a40985 100644
--- a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKProxyFactory.java
+++ b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/JDKProxyFactory.java
@@ -18,15 +18,17 @@
*/
package org.apache.tuscany.sca.core.invocation.impl;
+import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Proxy;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.List;
-import org.apache.tuscany.sca.core.context.impl.CallableReferenceImpl;
+import org.apache.tuscany.sca.common.java.collection.LRUCache;
+import org.apache.tuscany.sca.core.LifeCycleListener;
import org.apache.tuscany.sca.core.context.impl.CallbackServiceReferenceImpl;
import org.apache.tuscany.sca.core.context.impl.ServiceReferenceImpl;
-import org.apache.tuscany.sca.core.invocation.CachedProxy;
import org.apache.tuscany.sca.core.invocation.ProxyCreationException;
import org.apache.tuscany.sca.core.invocation.ProxyFactory;
import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
@@ -34,12 +36,13 @@ import org.apache.tuscany.sca.invocation.MessageFactory;
import org.apache.tuscany.sca.runtime.RuntimeWire;
import org.oasisopen.sca.ServiceReference;
+
/**
* the default implementation of a wire service that uses JDK dynamic proxies
*
* @version $Rev$ $Date$
*/
-public class JDKProxyFactory implements ProxyFactory {
+public class JDKProxyFactory implements ProxyFactory, LifeCycleListener {
protected InterfaceContractMapper contractMapper;
private MessageFactory messageFactory;
@@ -67,7 +70,7 @@ public class JDKProxyFactory implements ProxyFactory {
return interfaze.getClassLoader();
}
});
- Object proxy = CachedProxy.newProxyInstance(cl, new Class[] {interfaze}, handler);
+ Object proxy = newProxyInstance(cl, new Class[] {interfaze}, handler);
((ServiceReferenceImpl)callableReference).setProxy(proxy);
return interfaze.cast(proxy);
}
@@ -82,13 +85,13 @@ public class JDKProxyFactory implements ProxyFactory {
Class<T> interfaze = callbackReference.getBusinessInterface();
InvocationHandler handler = new JDKCallbackInvocationHandler(messageFactory, callbackReference);
ClassLoader cl = interfaze.getClassLoader();
- Object proxy = CachedProxy.newProxyInstance(cl, new Class[] {interfaze}, handler);
- callbackReference.setProxy(proxy);
+ Object proxy = newProxyInstance(cl, new Class[] {interfaze}, handler);
+ callbackReference.setProxy(proxy);
return interfaze.cast(proxy);
}
public <B, R extends ServiceReference<B>> R cast(B target) throws IllegalArgumentException {
- InvocationHandler handler = CachedProxy.getInvocationHandler(target);
+ InvocationHandler handler = Proxy.getInvocationHandler(target);
if (handler instanceof JDKInvocationHandler) {
return (R)((JDKInvocationHandler)handler).getCallableReference();
} else {
@@ -100,6 +103,47 @@ public class JDKProxyFactory implements ProxyFactory {
* @see org.apache.tuscany.sca.core.invocation.ProxyFactory#isProxyClass(java.lang.Class)
*/
public boolean isProxyClass(Class<?> clazz) {
- return CachedProxy.isProxyClass(clazz);
+ return Proxy.isProxyClass(clazz);
}
+
+ // This is a cache containing the proxy class constructor for each business interface.
+ // This improves performance compared to calling Proxy.newProxyInstance()
+ // every time that a proxy is needed.
+ private final LRUCache<Class<?>, Constructor<?>> cache = new LRUCache<Class<?>, Constructor<?>>(512);
+
+ public Object newProxyInstance(ClassLoader classloader,
+ Class<?> interfaces[],
+ InvocationHandler invocationhandler) throws IllegalArgumentException {
+ if (interfaces.length > 1) {
+ // We only cache the proxy constructors with one single interface which the case in SCA where
+ // one reference can have one interface
+ return Proxy.newProxyInstance(classloader, interfaces, invocationhandler);
+ }
+ try {
+ if (invocationhandler == null)
+ throw new NullPointerException("InvocationHandler is null");
+ // Lookup cached constructor. aclass[0] is the reference's business interface.
+ Constructor<?> proxyCTOR;
+ synchronized (cache) {
+ proxyCTOR = cache.get(interfaces[0]);
+ }
+ if (proxyCTOR == null) {
+ Class<?> proxyClass = Proxy.getProxyClass(classloader, interfaces);
+ proxyCTOR = proxyClass.getConstructor(InvocationHandler.class);
+ synchronized (cache) {
+ cache.put(interfaces[0], proxyCTOR);
+ }
+ }
+ return proxyCTOR.newInstance(invocationhandler);
+ } catch (Throwable e) {
+ throw new IllegalArgumentException(e);
+ }
+ }
+
+ public void start() {
+ }
+
+ public void stop() {
+ cache.clear();
+ }
}