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/* |
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* i-scream central monitoring system |
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* http://www.i-scream.org |
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* Copyright (C) 2000-2002 i-scream |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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*/ |
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|
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//---PACKAGE DECLARATION--- |
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package uk.ac.ukc.iscream.util; |
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package uk.org.iscream.cms.server.componentmanager; |
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//---IMPORTS--- |
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import org.omg.CORBA.ORB; |
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import org.omg.CosNaming.*; |
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import org.omg.PortableServer.*; |
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import uk.ac.ukc.iscream.core.*; |
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import uk.org.iscream.cms.server.core.*; |
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import uk.org.iscream.cms.util.*; |
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|
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/** |
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* This class returns references for global system objects. |
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* |
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* @return a reference to the ReferenceManager |
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*/ |
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public static ReferenceManager getInstance() { |
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public synchronized static ReferenceManager getInstance() { |
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if (_instance == null) { |
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_instance = new ReferenceManager(); |
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} |
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dieWithError("\nCRITICAL:Invalid Name - when resolving reference to " + name + "!\n" + |
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" Please check with your CORBA naming service provider."); |
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} catch (org.omg.CosNaming.NamingContextPackage.NotFound e) { |
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dieWithError("\nCRITICAL:Not Found - when resolving reference to " + name + "!\n" + |
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recoverWithError("\nCRITICAL:Not Found - when resolving reference to " + name + "!\n" + |
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" Please check that this component is running."); |
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} |
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return objRef; |
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dieWithError("\nCRITICAL:Naming Service Cannot Proceed - when binding " + name + "!\n" + |
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" Please check with your CORBA naming service provider."); |
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} catch (org.omg.CosNaming.NamingContextPackage.NotFound e) { |
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dieWithError("\nCRITICAL:Naming Service Not Found - when binding " + name + "!\n" + |
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recoverWithError("\nCRITICAL:Naming Service Not Found - when binding " + name + "!\n" + |
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" Please check with your CORBA naming service provider."); |
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} catch (org.omg.CosNaming.NamingContextPackage.AlreadyBound e) { |
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dieWithError("\nCRITICAL:Already Bound - when binding " + name + "!\n" + |
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* Overrides the {@link java.lang.Object#toString() Object.toString()} |
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* method to provide clean logging (every class should have this). |
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* |
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* This uses the uk.ac.ukc.iscream.util.NameFormat class |
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* This uses the uk.org.iscream.cms.util.NameFormat class |
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* to format the toString() |
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* |
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* @return the name of this class and its CVS revision |
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* If there are any CORBA errors this method is called with the |
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* error message. |
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* |
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* The exception this throws is generic to CORBA communication |
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* problems, this is a Runtime exception and is typically only |
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* explicitly caught in the ComponentManager for the current VM |
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* The ComponentManager can then decide what course of action to |
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* take. |
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* |
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* Also, if it can, it will log the message with the logger. |
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* |
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* @param message the error message to die with |
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*/ |
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private void recoverWithError(String message) throws ComponentCORBAException { |
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if (_logger != null) { |
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_logger.write(toString(), Logger.WARNING, "component CORBA error - " + message); |
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} |
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throw new ComponentCORBAException(message); |
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} |
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|
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|
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/** |
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* If there are any CORBA errors this method is called with the |
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* error message. |
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* |
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* Currently this prints the error, on the local err stream. Will |
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* print to the logger if one is available. |
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* |
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System.exit(1); |
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} |
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|
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//---ACCESSOR/MUTATOR METHODS--- |
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/** |
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} catch (org.omg.CORBA.ORBPackage.InvalidName e) { |
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dieWithError("\nCRITICAL:Unable to resolve reference to the Naming Service!\n" + |
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" Please check with your CORBA naming service provider."); |
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} catch (java.lang.NullPointerException e) { |
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dieWithError("\nCRITICAL:Unable to resolve reference to the Naming Service!\n" + |
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" Please check with your CORBA naming service provider."); |
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} |
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_ns = NamingContextExtHelper.narrow(objRef); |
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} |
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/** |
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* A reference to the single instance of this class |
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*/ |
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< |
private static ReferenceManager _instance; |
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private static ReferenceManager _instance = null; |
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} |
