org.ow2.easybeans.security.propagation.context.SecurityCurrent Maven / Gradle / Ivy
/**
* EasyBeans
* Copyright (C) 2006 Bull S.A.S.
* Contact: [email protected]
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
* --------------------------------------------------------------------------
* $Id: SecurityCurrent.java 5369 2010-02-24 14:58:19Z benoitf $
* --------------------------------------------------------------------------
*/
package org.ow2.easybeans.security.propagation.context;
import org.ow2.easybeans.security.api.EZBSecurityContext;
import org.ow2.easybeans.security.api.EZBSecurityCurrent;
/**
* Manages the current security context associated to the current thread.
* @author Florent Benoit
*/
public class SecurityCurrent implements EZBSecurityCurrent {
/**
* Inherited Local thread used to keep the security context.
*/
private static InheritableThreadLocal threadLocal;
/**
* Static Security Context that is applied on all threads (used for heavy
* client).
*/
private static EZBSecurityContext globalContext = null;
/**
* Default security context.
*/
private static final EZBSecurityContext DEFAULT_CTX = new SecurityContext();
/**
* Init the thread
*/
static {
threadLocal = new InheritableThreadLocal();
threadLocal.set(new SecurityContext());
}
/**
* Unique instance of this current object.
*/
private static EZBSecurityCurrent unique = null;
/**
* Return the unique instance of this object.
* @return SecurityCurrent return the current
*/
public static EZBSecurityCurrent getCurrent() {
if (unique == null) {
// Build a default implementation
unique = new SecurityCurrent();
}
return unique;
}
/**
* Associates the given security context to the current thread.
* @param securityContext Security context to associate to the current
* thread.
*/
public void setSecurityContext(final EZBSecurityContext securityContext) {
threadLocal.set(securityContext);
}
/**
* Associates the given security context to all threads (JVM).
* @param securityContext Security context to associate to the JVM
*/
public static void setGlobalSecurityContext(final EZBSecurityContext securityContext) {
globalContext = securityContext;
}
/**
* Gets the current context.
* @return SecurityContext return the Security context associated to the
* current thread or the JVM
*/
public EZBSecurityContext getSecurityContext() {
if (globalContext != null) {
return globalContext;
}
if (threadLocal.get() != null) {
return threadLocal.get();
}
// else, never null context.
return DEFAULT_CTX;
}
/**
* Sets the security current instance to use.
* @param current the given instance.
*/
public static void setSecurityCurrent(final EZBSecurityCurrent current) {
if (unique != null) {
throw new IllegalStateException("Unable to set the unique instance. It is already set");
}
unique = current;
}
}