diff options
Diffstat (limited to 'pki/base/common/src/com/netscape/cmscore/logging/LogQueue.java')
-rw-r--r-- | pki/base/common/src/com/netscape/cmscore/logging/LogQueue.java | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/pki/base/common/src/com/netscape/cmscore/logging/LogQueue.java b/pki/base/common/src/com/netscape/cmscore/logging/LogQueue.java new file mode 100644 index 000000000..f15be3f39 --- /dev/null +++ b/pki/base/common/src/com/netscape/cmscore/logging/LogQueue.java @@ -0,0 +1,127 @@ +// --- BEGIN COPYRIGHT BLOCK --- +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; version 2 of the License. +// +// This program 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 General Public License for more details. +// +// You should have received a copy of the GNU General Public License along +// with this program; if not, write to the Free Software Foundation, Inc., +// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +// +// (C) 2007 Red Hat, Inc. +// All rights reserved. +// --- END COPYRIGHT BLOCK --- +package com.netscape.cmscore.logging; + + +import java.io.*; +import java.util.*; +import java.text.MessageFormat; +import com.netscape.certsrv.base.*; +import com.netscape.certsrv.logging.*; +import com.netscape.certsrv.apps.CMS; + + +/** + * A class represents a log queue. + * <P> + * + * @author mzhao + * @version $Revision: 14561 $, $Date: 2007-05-01 10:28:56 -0700 (Tue, 01 May 2007) $ + */ +public class LogQueue implements ILogQueue { + + private static LogQueue mLogQueue = new LogQueue(); + protected Vector mListeners = null; + + /** + * Constructs a log queue. + */ + public LogQueue() { + } + + public static ILogQueue getLogQueue() { + return mLogQueue; + } + + /** + * Initializes the log queue. + * <P> + * + */ + public void init() { + mListeners = new Vector(); + + } + + /** + * Stops this log queue: shuts down all registered listeners + * <P> + */ + public void shutdown() { + if (mListeners == null) + return; + for (int i = 0; i < mListeners.size(); i++) { + ((ILogEventListener) mListeners.elementAt(i)).shutdown(); + } + mListeners = null; + } + + /** + * Adds an event listener. + * + * @param listener the log event listener + */ + public void addLogEventListener(ILogEventListener listener) { + //Make sure we don't have duplicated listener + if (!mListeners.contains(listener)) + mListeners.addElement(listener); + } + + /** + * Removes an event listener. + * + * @param listener the log event listener + */ + public void removeLogEventListener(ILogEventListener listener) { + mListeners.removeElement(listener); + } + + /** + * Logs an event, and notifies logger to reuse the event. + * + * @param event the log event + */ + public void log(ILogEvent event) { + if (mListeners == null) + return; + for (int i = 0; i < mListeners.size(); i++) { + try { + ((ILogEventListener) mListeners.elementAt(i)).log(event); + } catch (ELogException e) { + // Raidzilla Bug #57592: Don't display potentially + // incorrect log message. + // ConsoleError.send(new SystemEvent(CMS.getUserMessage("CMS_LOG_EVENT_FAILED", + // event.getEventType(), e.toString()))); + + // Don't do this again. + removeLogEventListener((ILogEventListener) + mListeners.elementAt(i)); + } + } + } + + /** + * Flushes the log buffers (if any) + */ + public void flush() { + for (int i = 0; i < mListeners.size(); i++) { + ((ILogEventListener) mListeners.elementAt(i)).flush(); + } + } +} + |