/*
 * Copyright (c) 2011-2019 Contributors to the Eclipse Foundation
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
 * which is available at https://www.apache.org/licenses/LICENSE-2.0.
 *
 * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
 */

package io.vertx.core.logging;

import io.vertx.core.spi.logging.LogDelegate;

import java.util.logging.Level;
import java.util.logging.LogRecord;

A LogDelegate which delegates to java.util.logging
Author:Kenny MacLeod
/** * A {@link io.vertx.core.spi.logging.LogDelegate} which delegates to java.util.logging * * @author <a href="kenny.macleod@kizoom.com">Kenny MacLeod</a> */
public class JULLogDelegate implements LogDelegate { private final java.util.logging.Logger logger; JULLogDelegate(final String name) { logger = java.util.logging.Logger.getLogger(name); } @Override public boolean isWarnEnabled() { return logger.isLoggable(Level.WARNING); } public boolean isInfoEnabled() { return logger.isLoggable(Level.INFO); } public boolean isDebugEnabled() { return logger.isLoggable(Level.FINE); } public boolean isTraceEnabled() { return logger.isLoggable(Level.FINEST); } public void fatal(final Object message) { log(Level.SEVERE, message); } public void fatal(final Object message, final Throwable t) { log(Level.SEVERE, message, t); } public void error(final Object message) { log(Level.SEVERE, message); } @Override public void error(Object message, Object... params) { log(Level.SEVERE, message, null, params); } public void error(final Object message, final Throwable t) { log(Level.SEVERE, message, t); } @Override public void error(Object message, Throwable t, Object... params) { log(Level.SEVERE, message, t, params); } public void warn(final Object message) { log(Level.WARNING, message); } @Override public void warn(Object message, Object... params) { log(Level.WARNING, message, null, params); } public void warn(final Object message, final Throwable t) { log(Level.WARNING, message, t); } @Override public void warn(Object message, Throwable t, Object... params) { log(Level.WARNING, message, t, params); } public void info(final Object message) { log(Level.INFO, message); } @Override public void info(Object message, Object... params) { log(Level.INFO, message, null, params); } public void info(final Object message, final Throwable t) { log(Level.INFO, message, t); } @Override public void info(Object message, Throwable t, Object... params) { log(Level.INFO, message, t, params); } public void debug(final Object message) { log(Level.FINE, message); } @Override public void debug(Object message, Object... params) { log(Level.FINE, message, null, params); } public void debug(final Object message, final Throwable t) { log(Level.FINE, message, t); } @Override public void debug(Object message, Throwable t, Object... params) { log(Level.FINE, message, t, params); } public void trace(final Object message) { log(Level.FINEST, message); } @Override public void trace(Object message, Object... params) { log(Level.FINEST, message, null, params); } public void trace(final Object message, final Throwable t) { log(Level.FINEST, message, t); } @Override public void trace(Object message, Throwable t, Object... params) { log(Level.FINEST, message, t, params); } private void log(Level level, Object message) { log(level, message, null); } private void log(Level level, Object message, Throwable t, Object... params) { if (!logger.isLoggable(level)) { return; } String msg = (message == null) ? "NULL" : message.toString(); LogRecord record = new LogRecord(level, msg); record.setLoggerName(logger.getName()); if (t != null) { record.setThrown(t); } else if (params != null && params.length != 0 && params[params.length - 1] instanceof Throwable) { // The exception may be the last parameters (SLF4J uses this convention). record.setThrown((Throwable) params[params.length - 1]); } // This will disable stack trace lookup inside JUL. If someone wants location info, they can use their own formatter // or use a different logging framework like sl4j, or log4j record.setSourceClassName(null); record.setParameters(params); logger.log(record); } private void log(Level level, Object message, Throwable t) { log(level, message, t, (Object[]) null); } @Override public Object unwrap() { return logger; } }