| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache license, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the license for the specific language governing permissions and |
| * limitations under the license. |
| */ |
| package org.apache.logging.log4j.core.jmx; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.concurrent.Executor; |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| import javax.management.MBeanNotificationInfo; |
| import javax.management.Notification; |
| import javax.management.NotificationBroadcasterSupport; |
| import javax.management.ObjectName; |
| |
| import org.apache.logging.log4j.Level; |
| import org.apache.logging.log4j.status.StatusData; |
| import org.apache.logging.log4j.status.StatusListener; |
| import org.apache.logging.log4j.status.StatusLogger; |
| |
| /** |
| * Implementation of the {@code StatusLoggerAdminMBean} interface. |
| */ |
| public class StatusLoggerAdmin extends NotificationBroadcasterSupport implements StatusListener, StatusLoggerAdminMBean { |
| |
| private final AtomicLong sequenceNo = new AtomicLong(); |
| private final ObjectName objectName; |
| private final String contextName; |
| private Level level = Level.WARN; |
| |
| /** |
| * Constructs a new {@code StatusLoggerAdmin} with the {@code Executor} to |
| * be used for sending {@code Notification}s asynchronously to listeners. |
| * |
| * @param contextName name of the LoggerContext under which to register this |
| * StatusLoggerAdmin. Note that the StatusLogger may be |
| * registered multiple times, once for each LoggerContext. In web |
| * containers, each web application has its own LoggerContext and |
| * by associating the StatusLogger with the LoggerContext, all |
| * associated MBeans can be unloaded when the web application is |
| * undeployed. |
| * @param executor used to send notifications asynchronously |
| */ |
| public StatusLoggerAdmin(final String contextName, final Executor executor) { |
| super(executor, createNotificationInfo()); |
| this.contextName = contextName; |
| try { |
| final String mbeanName = String.format(PATTERN, Server.escape(contextName)); |
| objectName = new ObjectName(mbeanName); |
| } catch (final Exception e) { |
| throw new IllegalStateException(e); |
| } |
| removeListeners(contextName); |
| StatusLogger.getLogger().registerListener(this); |
| } |
| |
| /** |
| * Add listener to StatusLogger for this context, or replace it if it already exists. |
| * |
| * @param ctxName |
| */ |
| private void removeListeners(final String ctxName) { |
| final StatusLogger logger = StatusLogger.getLogger(); |
| final Iterable<StatusListener> listeners = logger.getListeners(); |
| // Remove any StatusLoggerAdmin listeners already registered for this context |
| for (final StatusListener statusListener : listeners) { |
| if (statusListener instanceof StatusLoggerAdmin) { |
| final StatusLoggerAdmin adminListener = (StatusLoggerAdmin) statusListener; |
| if (ctxName != null && ctxName.equals(adminListener.contextName)) { |
| logger.removeListener(adminListener); |
| } |
| } |
| } |
| } |
| |
| private static MBeanNotificationInfo createNotificationInfo() { |
| final String[] notifTypes = new String[] { |
| NOTIF_TYPE_DATA, |
| NOTIF_TYPE_MESSAGE }; |
| final String name = Notification.class.getName(); |
| final String description = "StatusLogger has logged an event"; |
| return new MBeanNotificationInfo(notifTypes, name, description); |
| } |
| |
| @Override |
| public String[] getStatusDataHistory() { |
| final List<StatusData> data = getStatusData(); |
| final String[] result = new String[data.size()]; |
| for (int i = 0; i < result.length; i++) { |
| result[i] = data.get(i).getFormattedStatus(); |
| } |
| return result; |
| } |
| |
| @Override |
| public List<StatusData> getStatusData() { |
| return StatusLogger.getLogger().getStatusData(); |
| } |
| |
| @Override |
| public String getLevel() { |
| return this.level.name(); |
| } |
| |
| @Override |
| public Level getStatusLevel() { |
| return this.level; |
| } |
| |
| @Override |
| public void setLevel(final String level) { |
| this.level = Level.toLevel(level, Level.ERROR); |
| } |
| |
| @Override |
| public String getContextName() { |
| return contextName; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.apache.logging.log4j.status.StatusListener#log(org.apache.logging |
| * .log4j.status.StatusData) |
| */ |
| @Override |
| public void log(final StatusData data) { |
| final Notification notifMsg = new Notification(NOTIF_TYPE_MESSAGE, getObjectName(), nextSeqNo(), nowMillis(), |
| data.getFormattedStatus()); |
| sendNotification(notifMsg); |
| |
| final Notification notifData = new Notification(NOTIF_TYPE_DATA, getObjectName(), nextSeqNo(), nowMillis()); |
| notifData.setUserData(data); |
| sendNotification(notifData); |
| } |
| |
| /** |
| * Returns the {@code ObjectName} of this mbean. |
| * |
| * @return the {@code ObjectName} |
| * @see StatusLoggerAdminMBean#PATTERN |
| */ |
| @Override |
| public ObjectName getObjectName() { |
| return objectName; |
| } |
| |
| private long nextSeqNo() { |
| return sequenceNo.getAndIncrement(); |
| } |
| |
| private long nowMillis() { |
| return System.currentTimeMillis(); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| // nothing to close here |
| } |
| } |