org.smallmind.scribe.pen.LoggerManager Maven / Gradle / Ivy
/*
* Copyright (c) 2007 through 2024 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project 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 or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* .
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
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*/
package org.smallmind.scribe.pen;
import java.util.HashMap;
import java.util.HashSet;
import java.util.concurrent.CopyOnWriteArraySet;
public class LoggerManager {
private static final HashMap LOGGER_MAP = new HashMap();
private static final HashMap TEMPLATE_MAP = new HashMap();
private static final HashSet TEMPLATE_SET = new HashSet();
private static final CopyOnWriteArraySet LOGGING_PACKAGE_PREFIX_QUEUE = new CopyOnWriteArraySet();
static {
LOGGING_PACKAGE_PREFIX_QUEUE.add("org.smallmind.scribe.");
}
public static void addLoggingPackagePrefix (String packageName) {
LOGGING_PACKAGE_PREFIX_QUEUE.add(packageName);
}
public static boolean isLoggingClass (String className) {
for (String packagePrefix : LOGGING_PACKAGE_PREFIX_QUEUE) {
if (className.startsWith(packagePrefix)) {
return true;
}
}
return false;
}
public static void addTemplate (Template template) {
synchronized (LoggerManager.class) {
if (!TEMPLATE_SET.contains(template)) {
TEMPLATE_SET.add(template);
reAssociateAllLoggers();
}
}
}
public static void removeTemplate (Template template) {
synchronized (LoggerManager.class) {
if (TEMPLATE_SET.remove(template)) {
reAssociateAllLoggers();
}
}
}
public static Template getTemplate (Logger logger) {
synchronized (LoggerManager.class) {
return TEMPLATE_MAP.get(logger);
}
}
public static Logger getLogger (Class loggableClass) {
return getLogger(loggableClass.getCanonicalName());
}
public static Logger getLogger (String name) {
Logger logger;
if ((logger = LOGGER_MAP.get(name)) == null) {
synchronized (LoggerManager.class) {
if ((logger = LOGGER_MAP.get(name)) == null) {
logger = new Logger(name);
LOGGER_MAP.put(name, logger);
associateTemplate(logger);
}
}
}
return logger;
}
protected static void commitTemplateChanges (Template.Change change, Template template) {
synchronized (LoggerManager.class) {
for (Logger logger : TEMPLATE_MAP.keySet()) {
if (TEMPLATE_MAP.get(logger).equals(template)) {
template.applyChange(change, logger);
}
}
}
}
private static void reAssociateAllLoggers () {
for (Logger logger : LOGGER_MAP.values()) {
associateTemplate(logger);
}
}
private static void associateTemplate (Logger logger) {
Template matchingTemplate = null;
int matchingPriority = Template.NO_MATCH;
int templatePriority;
for (Template template : TEMPLATE_SET) {
templatePriority = template.matchLogger(logger.getName());
if (templatePriority > matchingPriority) {
matchingTemplate = template;
matchingPriority = templatePriority;
}
}
if (matchingTemplate == null) {
TEMPLATE_MAP.remove(logger);
} else if (!matchingTemplate.equals(getTemplate(logger))) {
matchingTemplate.apply(logger);
TEMPLATE_MAP.put(logger, matchingTemplate);
}
}
}