/*
|
* The contents of this file are subject to the terms of the Common Development and
|
* Distribution License (the License). You may not use this file except in compliance with the
|
* License.
|
*
|
* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
|
* specific language governing permission and limitations under the License.
|
*
|
* When distributing Covered Software, include this CDDL Header Notice in each file and include
|
* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
|
* Header, with the fields enclosed by brackets [] replaced by your own identifying
|
* information: "Portions Copyright [year] [name of copyright owner]".
|
*
|
* Copyright 2007-2009 Sun Microsystems, Inc.
|
* Portions Copyright 2013-2016 ForgeRock AS.
|
*/
|
package org.opends.server.loggers;
|
|
import static org.opends.messages.ConfigMessages.*;
|
import static org.opends.server.util.ServerConstants.*;
|
|
import java.util.ArrayList;
|
import java.util.Collection;
|
import java.util.List;
|
import java.util.Map;
|
import java.util.concurrent.ConcurrentHashMap;
|
|
import org.opends.server.core.ServerContext;
|
import org.forgerock.opendj.config.ClassPropertyDefinition;
|
import org.forgerock.opendj.server.config.meta.DebugLogPublisherCfgDefn;
|
import org.forgerock.opendj.server.config.server.DebugLogPublisherCfg;
|
|
/**
|
* A logger for debug and trace logging. DebugLogger provides a debugging
|
* management access point. It is used to configure the Tracers, as well as
|
* to register a per-class tracer.
|
*
|
* Various stub debug methods are provided to log different types of debug
|
* messages. However, these methods do not contain any actual implementation.
|
* Tracer aspects are later weaved to catch alls to these stub methods and
|
* do the work of logging the message.
|
*
|
* DebugLogger is self-initializing.
|
*/
|
public class DebugLogger extends AbstractLogger
|
<DebugLogPublisher<DebugLogPublisherCfg>, DebugLogPublisherCfg>
|
{
|
|
/** The set of all DebugTracer instances. */
|
private static Map<String, DebugTracer> classTracers = new ConcurrentHashMap<>();
|
|
/**
|
* Trace methods will use this static boolean to determine if debug is enabled
|
* so to not incur the cost of calling debugPublishers.isEmpty().
|
*/
|
private static boolean enabled;
|
|
private static final LoggerStorage
|
<DebugLogPublisher<DebugLogPublisherCfg>, DebugLogPublisherCfg>
|
loggerStorage = new LoggerStorage<>();
|
|
/** The singleton instance of this class. */
|
static final DebugLogger instance = new DebugLogger();
|
|
/** The constructor for this class. */
|
private DebugLogger()
|
{
|
super((Class) DebugLogPublisher.class,
|
ERR_CONFIG_LOGGER_INVALID_DEBUG_LOGGER_CLASS);
|
}
|
|
@Override
|
protected ClassPropertyDefinition getJavaClassPropertyDefinition()
|
{
|
return DebugLogPublisherCfgDefn.getInstance()
|
.getJavaClassPropertyDefinition();
|
}
|
|
@Override
|
protected Collection<DebugLogPublisher<DebugLogPublisherCfg>> getLogPublishers()
|
{
|
return loggerStorage.getLogPublishers();
|
}
|
|
/** Update all debug tracers with the settings in the registered publishers. */
|
static void updateTracerSettings()
|
{
|
DebugLogPublisher<DebugLogPublisherCfg>[] publishers =
|
loggerStorage.getLogPublishers().toArray(new DebugLogPublisher[0]);
|
|
for(DebugTracer tracer : classTracers.values())
|
{
|
tracer.updateSettings(publishers);
|
}
|
}
|
|
/**
|
* Indicates if debug logging is enabled.
|
*
|
* @return True if debug logging is enabled. False otherwise.
|
*/
|
public static boolean debugEnabled()
|
{
|
return enabled;
|
}
|
|
/**
|
* Retrieve the singleton instance of this class.
|
*
|
* @return The singleton instance of this logger.
|
*/
|
public static DebugLogger getInstance()
|
{
|
return instance;
|
}
|
|
/**
|
* Returns the registered Debug Tracer for a traced class.
|
*
|
* @param className The name of the class tracer to retrieve.
|
* @return The tracer for the provided class or null if there are
|
* no tracers registered.
|
*/
|
public static DebugTracer getTracer(final String className)
|
{
|
DebugTracer tracer = classTracers.get(className);
|
if (tracer == null)
|
{
|
tracer =
|
new DebugTracer(className, loggerStorage.getLogPublishers().toArray(
|
new DebugLogPublisher[0]));
|
classTracers.put(tracer.getTracedClassName(), tracer);
|
}
|
return tracer;
|
}
|
|
/**
|
* Adds a text debug log publisher that will print all messages to the
|
* provided writer, based on debug target(s) defined through system
|
* properties.
|
* <p>
|
* It is expected that one or more system properties beginning with
|
* {@code PROPERTY_DEBUG_TARGET} are set to define the properties of the debug
|
* targets used by the publisher, otherwise no publisher is added.
|
*
|
* @param writer
|
* The text writer where the message will be written to.
|
* @return the publisher. It may be {@code null} if no publisher is added.
|
*/
|
@SuppressWarnings({ "unchecked", "rawtypes" })
|
public final TextDebugLogPublisher addPublisherIfRequired(TextWriter writer)
|
{
|
final List<String> debugTargets = getDebugTargetsFromSystemProperties();
|
TextDebugLogPublisher publisher = null;
|
if (!debugTargets.isEmpty())
|
{
|
publisher = TextDebugLogPublisher.getStartupTextDebugPublisher(debugTargets, writer);
|
if (publisher != null) {
|
addLogPublisher((DebugLogPublisher) publisher);
|
}
|
}
|
return publisher;
|
}
|
|
private List<String> getDebugTargetsFromSystemProperties()
|
{
|
final List<String> targets = new ArrayList<>();
|
for (Map.Entry<Object, Object> entry : System.getProperties().entrySet())
|
{
|
if (((String) entry.getKey()).startsWith(PROPERTY_DEBUG_TARGET))
|
{
|
targets.add((String)entry.getValue());
|
}
|
}
|
return targets;
|
}
|
|
@Override
|
public final synchronized void addLogPublisher(final DebugLogPublisher<DebugLogPublisherCfg> publisher)
|
{
|
loggerStorage.addLogPublisher(publisher);
|
updateTracerSettings();
|
enabled = true;
|
adjustJulLevel();
|
}
|
|
@Override
|
public final synchronized boolean removeLogPublisher(final DebugLogPublisher<DebugLogPublisherCfg> publisher)
|
{
|
boolean removed = loggerStorage.removeLogPublisher(publisher);
|
updateTracerSettings();
|
enabled = !loggerStorage.getLogPublishers().isEmpty();
|
adjustJulLevel();
|
return removed;
|
}
|
|
@Override
|
public final synchronized void removeAllLogPublishers()
|
{
|
loggerStorage.removeAllLogPublishers();
|
updateTracerSettings();
|
enabled = false;
|
adjustJulLevel();
|
}
|
|
private void adjustJulLevel()
|
{
|
final ServerContext serverContext = getServerContext();
|
if (serverContext != null)
|
{
|
serverContext.getLoggerConfigManager().adjustJulLevel();
|
}
|
}
|
|
/**
|
* Returns whether there is at least one debug log publisher enabled.
|
* @return whether there is at least one debug log publisher enabled.
|
*/
|
public boolean isEnabled()
|
{
|
return enabled;
|
}
|
}
|
