[jboss-cvs] JBossAS SVN: r58014 - in projects/microcontainer/trunk/kernel/src/main/org/jboss/kernel/plugins: . util

[jboss-cvs-commits at lists.jboss.org]

Author: scott.stark at jboss.org
Date: 2006-11-02 12:50:42 -0500 (Thu, 02 Nov 2006)
New Revision: 58014

Added:
   projects/microcontainer/trunk/kernel/src/main/org/jboss/kernel/plugins/util/
   projects/microcontainer/trunk/kernel/src/main/org/jboss/kernel/plugins/util/KernelLocator.java
   projects/microcontainer/trunk/kernel/src/main/org/jboss/kernel/plugins/util/KernelLocatorPermission.java
Log:
A simple singleton that provides access to the Kernel the KernelLocator is associated with.

Added: projects/microcontainer/trunk/kernel/src/main/org/jboss/kernel/plugins/util/KernelLocator.java
===================================================================
--- projects/microcontainer/trunk/kernel/src/main/org/jboss/kernel/plugins/util/KernelLocator.java	2006-11-02 16:39:31 UTC (rev 58013)
+++ projects/microcontainer/trunk/kernel/src/main/org/jboss/kernel/plugins/util/KernelLocator.java	2006-11-02 17:50:42 UTC (rev 58014)
@@ -0,0 +1,61 @@
+/*
+ * JBoss, Home of Professional Open Source
+ * Copyright 2006, Red Hat Middleware LLC, and individual contributors
+ * by the @authors tag. See the copyright.txt in the distribution for a
+ * full listing of individual contributors.
+ *
+ * This 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 (at your option) any later version.
+ *
+ * This software 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 software; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+package org.jboss.kernel.plugins.util;
+
+import org.jboss.kernel.Kernel;
+import org.jboss.kernel.spi.dependency.KernelControllerContext;
+import org.jboss.kernel.spi.dependency.KernelControllerContextAware;
+
+/**
+ * A simple singleton that provides access to the Kernel the KernelLocator
+ * is associated with.
+ * 
+ * @author Scott.Stark at jboss.org
+ * @version $Revision:$
+ */
+public class KernelLocator implements KernelControllerContextAware
+{
+   private static Kernel kernel;
+   private static final KernelLocatorPermission GET_KERNEL = new KernelLocatorPermission("kernel");
+
+   public void setKernelControllerContext(KernelControllerContext context)
+      throws Exception
+   {
+      KernelLocator.kernel = context.getKernel();
+   }
+
+   public void unsetKernelControllerContext(KernelControllerContext context)
+      throws Exception
+   {
+      KernelLocator.kernel = null;
+   }
+
+   public static Kernel getKernel()
+   {
+      SecurityManager sm = System.getSecurityManager();
+      if (sm != null)
+         sm.checkPermission(GET_KERNEL);
+
+      return kernel;
+   }
+
+}

Added: projects/microcontainer/trunk/kernel/src/main/org/jboss/kernel/plugins/util/KernelLocatorPermission.java
===================================================================
--- projects/microcontainer/trunk/kernel/src/main/org/jboss/kernel/plugins/util/KernelLocatorPermission.java	2006-11-02 16:39:31 UTC (rev 58013)
+++ projects/microcontainer/trunk/kernel/src/main/org/jboss/kernel/plugins/util/KernelLocatorPermission.java	2006-11-02 17:50:42 UTC (rev 58014)
@@ -0,0 +1,78 @@
+/*
+ * JBoss, Home of Professional Open Source
+ * Copyright 2006, Red Hat Middleware LLC, and individual contributors
+ * by the @authors tag. See the copyright.txt in the distribution for a
+ * full listing of individual contributors.
+ *
+ * This 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 (at your option) any later version.
+ *
+ * This software 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 software; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+package org.jboss.kernel.plugins.util;
+
+import java.security.BasicPermission;
+
+/** 
+ * This permission represents "trust" in a signer or codebase.
+ * 
+ * It contains a target name but no actions list. The targets are
+ * kernel - access the kernel 
+ * * - all allowed access
+ * 
+ * @author Scott.Stark at jboss.org
+ * @version $Revision: 57306 $
+ */
+public class KernelLocatorPermission extends BasicPermission
+{
+   /** For serialization */
+   private static final long serialVersionUID = 1L;
+
+   /** 
+    * Create a new Permission
+    * 
+    * @param name the target
+    * @throws IllegalArgumentException for invalid name 
+    * @throws NullPointerException for null name
+    */ 
+   public KernelLocatorPermission(String name)
+   {
+      this(name, null);
+   }
+
+   /** 
+    * Create a new Permission
+    * 
+    * @param name the target
+    * @param actions the actions
+    * @throws IllegalArgumentException for an invalid name or target 
+    * @throws NullPointerException for null name
+    */ 
+   public KernelLocatorPermission(String name, String actions)
+   {
+      super(name, actions);
+   }
+
+   /**
+    * @return human readable string.
+    */
+   public String toString()
+   {
+      StringBuilder buffer = new StringBuilder(64);
+      buffer.append(getClass().getName()).append(":");
+      buffer.append(" name=").append(getName());
+      buffer.append(" actions=").append(getActions());
+      return buffer.toString();
+   }
+
+}