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..24336d308
--- /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 $Revision$, $Date$
+ */
+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();
+        }
+    }
+}
+