org.eclipse.persistence.sdo.helper.ApplicationAccessWLS Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of eclipselink Show documentation
Show all versions of eclipselink Show documentation
EclipseLink build based upon Git transaction f2b9fc5
/*
* Copyright (c) 2014, 2018 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,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Dmitry Kornilov - Initial implementation
package org.eclipse.persistence.sdo.helper;
import org.eclipse.persistence.internal.security.PrivilegedAccessHelper;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.Map;
import java.util.WeakHashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* INTERNAL:
*
* This class using WLS classed to get unique application ID.
* WLS classes are accessed using reflection. It tries to use ComponentInvocationContext (CIC) first, if no success it
* tries to use ApplicationAccess.
*
* @author Dmitry Kornilov
* @since EclipseLink 2.6.0
*/
public class ApplicationAccessWLS {
private static final Logger LOGGER = Logger.getLogger(ApplicationAccessWLS.class.getName());
private static final String CIC_MANAGER_CLASS_NAME = "weblogic.invocation.ComponentInvocationContextManager";
private static final String CIC_CLASS_NAME = "weblogic.invocation.ComponentInvocationContext";
/** ApplicationID cache **/
private final Map appNames = Collections.synchronizedMap(new WeakHashMap());
/** Instance of ApplicationAccess or null if not initialized **/
private Object applicationAccessInstance;
private Method getApplicationNameMethod;
private Method getApplicationVersionMethod;
/** Instance of CIC (Component Invocation Context) or null if not initialized **/
private Object cicManagerInstance;
private Method getCurrentCicMethod;
private Method getApplicationIdMethod;
/**
* Create and initialize.
*/
public ApplicationAccessWLS() {
// Try initializing using CIC
if (initUsingCic()) {
LOGGER.fine("ApplicationAccessWLS initialized using ComponentInvocationContext.");
return;
}
// Init using CIC failed, try to init using ApplicationAccess
cicManagerInstance = null;
if (initUsingApplicationAccess()) {
LOGGER.fine("ApplicationAccessWLS initialized using ApplicationAccess.");
return;
}
applicationAccessInstance = null;
LOGGER.fine("Failed to initialize ApplicationAccessWLS.");
}
/**
* Gets a unique application name.
*
* @param classLoader the class loader
* @return unique application name.
*/
public String getApplicationName(ClassLoader classLoader) {
if (appNames.containsKey(classLoader)) {
return appNames.get(classLoader);
} else {
synchronized (appNames) {
if (appNames.containsKey(classLoader)) {
return appNames.get(classLoader);
} else {
final String appName = getApplicationNameInternal(classLoader);
appNames.put(classLoader, appName);
return appName;
}
}
}
}
/**
* Internal method to get a unique application name.
* Uses CIC if possible. If not using ApplicationAccess.
*
* @param classLoader the class loader
* @return unique application name.
*/
private String getApplicationNameInternal(ClassLoader classLoader) {
// If CIC initialization was successful use CIC
if (cicManagerInstance != null) {
try {
return getAppNameUsingCic();
} catch (Exception e) {
LOGGER.log(Level.WARNING, "ApplicationAccessWLS.getApplicationName error in getAppNameUsingCic.", e);
return null;
}
}
// If CIC initialization was not successful and ApplicationAccess initialization was successful
// use ApplicationAccess
if (applicationAccessInstance != null) {
try {
return getAppNameUsingApplicationAccess(classLoader);
} catch (Exception e) {
LOGGER.log(Level.WARNING, "ApplicationAccessWLS.getApplicationName error in getAppNameUsingApplicationAccess.", e);
return null;
}
}
// Both CIC and ApplicationAccess are failed to initialize
LOGGER.fine("ApplicationAccessWLS: null applicationName returned.");
return null;
}
/**
* Initializes CIC. Returns true on success.
*/
protected boolean initUsingCic() {
// Check that CIC implementation exists.
if (ApplicationAccessWLS.class.getClassLoader().getResource("META-INF/services/" + CIC_MANAGER_CLASS_NAME) == null) {
return false;
}
try {
// Get component invocation manager
final Class cicManagerClass = PrivilegedAccessHelper.getClassForName(CIC_MANAGER_CLASS_NAME);
final Method getInstance = PrivilegedAccessHelper.getDeclaredMethod(cicManagerClass, "getInstance", new Class[]{});
cicManagerInstance = PrivilegedAccessHelper.invokeMethod(getInstance, cicManagerClass);
// Get component invocation context
getCurrentCicMethod = PrivilegedAccessHelper.getMethod(cicManagerClass, "getCurrentComponentInvocationContext", new Class[]{}, true);
final Class cicClass = PrivilegedAccessHelper.getClassForName(CIC_CLASS_NAME);
getApplicationIdMethod = PrivilegedAccessHelper.getDeclaredMethod(cicClass, "getApplicationId", new Class[]{});
return true;
} catch (ClassNotFoundException|NoSuchMethodException|InvocationTargetException|IllegalAccessException e) {
LOGGER.log(Level.FINE, "Error initializing ApplicationAccessWLS using ComponentInvocationContext.", e);
return false;
}
}
/**
* Initializes ApplicationAccess.
*/
protected boolean initUsingApplicationAccess() {
try {
final Class applicationAccessClass = PrivilegedAccessHelper.getClassForName("weblogic.application.ApplicationAccess");
final Method getApplicationAccessMethod = PrivilegedAccessHelper.getDeclaredMethod(applicationAccessClass, "getApplicationAccess", new Class[]{});
applicationAccessInstance = PrivilegedAccessHelper.invokeMethod(getApplicationAccessMethod, applicationAccessClass);
final Class[] methodParameterTypes = new Class[]{ClassLoader.class};
getApplicationNameMethod = PrivilegedAccessHelper.getMethod(applicationAccessClass, "getApplicationName", methodParameterTypes, true);
getApplicationVersionMethod = PrivilegedAccessHelper.getMethod(applicationAccessClass, "getApplicationVersion", methodParameterTypes, true);
return true;
} catch (ClassNotFoundException|NoSuchMethodException|InvocationTargetException|IllegalAccessException ex) {
LOGGER.log(Level.FINE, "Error initializing ApplicationAccessWLS using ApplicationAccess.", ex);
return false;
}
}
/**
* Gets unique application name using CIC. Calls cicInstance.getApplicationIdMethod().
*/
private String getAppNameUsingCic() throws InvocationTargetException, IllegalAccessException {
final Object cicInstance = PrivilegedAccessHelper.invokeMethod(getCurrentCicMethod, cicManagerInstance);
return (String) PrivilegedAccessHelper.invokeMethod(getApplicationIdMethod, cicInstance);
}
/**
* Gets unique application name using ApplicationAccess. Calls its getApplicationName() and getApplicationVersion methods.
*/
private String getAppNameUsingApplicationAccess(ClassLoader classLoader) throws InvocationTargetException, IllegalAccessException {
final Object[] parameters = new Object[] {classLoader};
final String appName = (String) PrivilegedAccessHelper.invokeMethod(getApplicationNameMethod, applicationAccessInstance, parameters);
if (appName != null) {
final String appVersion = (String) PrivilegedAccessHelper.invokeMethod(getApplicationVersionMethod, applicationAccessInstance, parameters);
if (appVersion != null) {
return appName + "#" + appVersion;
}
}
return appName;
}
}