133 lines
4.6 KiB
Java
133 lines
4.6 KiB
Java
/*
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* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package loggerfinder;
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import java.lang.*;
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import java.util.*;
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import java.util.concurrent.CopyOnWriteArrayList;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.logging.Handler;
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import java.util.logging.LogRecord;
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import java.util.logging.Logger;
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public class SimpleLoggerFinder extends System.LoggerFinder {
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public static final CopyOnWriteArrayList<Object> LOGS = new CopyOnWriteArrayList<>();
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static {
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try {
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long sleep = new Random().nextLong(1000L) + 1L;
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// simulate a slow load service
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Thread.sleep(sleep);
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System.getLogger("dummy")
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.log(System.Logger.Level.INFO,
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"Logger finder service load sleep value: " + sleep);
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} catch (InterruptedException e) {
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throw new RuntimeException(e);
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}
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}
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private final Map<String, SimpleLogger> loggers = new ConcurrentHashMap<>();
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public SimpleLoggerFinder() {
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System.getLogger("dummy")
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.log(System.Logger.Level.INFO,
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"Logger finder service created");
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}
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@Override
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public System.Logger getLogger(String name, Module module) {
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return loggers.computeIfAbsent(name, SimpleLogger::new);
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}
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private static class SimpleLogger implements System.Logger {
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private final java.util.logging.Logger logger;
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private static final class SimpleHandler extends Handler {
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@Override
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public void publish(LogRecord record) {
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LOGS.add(record);
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}
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@Override public void flush() { }
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@Override public void close() { }
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}
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public SimpleLogger(String name) {
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logger = Logger.getLogger(name);
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logger.addHandler(new SimpleHandler());
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}
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@Override
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public String getName() {
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return logger.getName();
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}
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java.util.logging.Level level(Level level) {
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return switch (level) {
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case ALL -> java.util.logging.Level.ALL;
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case DEBUG -> java.util.logging.Level.FINE;
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case TRACE -> java.util.logging.Level.FINER;
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case INFO -> java.util.logging.Level.INFO;
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case WARNING -> java.util.logging.Level.WARNING;
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case ERROR -> java.util.logging.Level.SEVERE;
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case OFF -> java.util.logging.Level.OFF;
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};
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}
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@Override
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public boolean isLoggable(Level level) {
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return logger.isLoggable(level(level));
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}
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@Override
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public void log(Level level, ResourceBundle bundle, String msg, Throwable thrown) {
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var julLevel = level(level);
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if (!logger.isLoggable(julLevel)) return;
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if (bundle != null) {
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logger.logrb(julLevel, bundle, msg, thrown);
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} else {
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logger.log(julLevel, msg, thrown);
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}
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}
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@Override
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public void log(Level level, ResourceBundle bundle, String format, Object... params) {
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var julLevel = level(level);
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if (!logger.isLoggable(julLevel)) return;
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if (params == null) {
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if (bundle == null) {
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logger.log(julLevel, format);
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} else {
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logger.logrb(julLevel, bundle, format);
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}
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} else {
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if (bundle == null) {
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logger.log(julLevel, format, params);
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} else {
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logger.logrb(julLevel, bundle, format, params);
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}
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}
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}
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}
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}
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