--- old/jdk/src/java.base/share/classes/sun/util/logging/LoggingSupport.java 2015-10-09 21:42:32.000000000 +0200 +++ /dev/null 2015-10-09 21:42:32.000000000 +0200 @@ -1,190 +0,0 @@ -/* - * Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. Oracle designates this - * particular file as subject to the "Classpath" exception as provided - * by Oracle in the LICENSE file that accompanied this code. - * - * This code 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 - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - */ - - -package sun.util.logging; - -import java.lang.reflect.Field; -import java.security.AccessController; -import java.security.PrivilegedAction; -import java.time.ZonedDateTime; - -/** - * Internal API to support JRE implementation to detect if the java.util.logging - * support is available but with no dependency on the java.util.logging - * classes. This LoggingSupport class provides several static methods to - * access the java.util.logging functionality that requires the caller - * to ensure that the logging support is {@linkplain #isAvailable available} - * before invoking it. - * - * @see sun.util.logging.PlatformLogger if you want to log messages even - * if the logging support is not available - */ -public class LoggingSupport { - private LoggingSupport() { } - - private static final LoggingProxy proxy = - AccessController.doPrivileged(new PrivilegedAction() { - public LoggingProxy run() { - try { - // create a LoggingProxyImpl instance when - // java.util.logging classes exist - Class c = Class.forName("java.util.logging.LoggingProxyImpl", true, null); - Field f = c.getDeclaredField("INSTANCE"); - f.setAccessible(true); - return (LoggingProxy) f.get(null); - } catch (ClassNotFoundException cnf) { - return null; - } catch (NoSuchFieldException e) { - throw new AssertionError(e); - } catch (IllegalAccessException e) { - throw new AssertionError(e); - } - }}); - - /** - * Returns true if java.util.logging support is available. - */ - public static boolean isAvailable() { - return proxy != null; - } - - private static void ensureAvailable() { - if (proxy == null) - throw new AssertionError("Should not here"); - } - - public static java.util.List getLoggerNames() { - ensureAvailable(); - return proxy.getLoggerNames(); - } - public static String getLoggerLevel(String loggerName) { - ensureAvailable(); - return proxy.getLoggerLevel(loggerName); - } - - public static void setLoggerLevel(String loggerName, String levelName) { - ensureAvailable(); - proxy.setLoggerLevel(loggerName, levelName); - } - - public static String getParentLoggerName(String loggerName) { - ensureAvailable(); - return proxy.getParentLoggerName(loggerName); - } - - public static Object getLogger(String name) { - ensureAvailable(); - return proxy.getLogger(name); - } - - public static Object getLevel(Object logger) { - ensureAvailable(); - return proxy.getLevel(logger); - } - - public static void setLevel(Object logger, Object newLevel) { - ensureAvailable(); - proxy.setLevel(logger, newLevel); - } - - public static boolean isLoggable(Object logger, Object level) { - ensureAvailable(); - return proxy.isLoggable(logger,level); - } - - public static void log(Object logger, Object level, String msg) { - ensureAvailable(); - proxy.log(logger, level, msg); - } - - public static void log(Object logger, Object level, String msg, Throwable t) { - ensureAvailable(); - proxy.log(logger, level, msg, t); - } - - public static void log(Object logger, Object level, String msg, Object... params) { - ensureAvailable(); - proxy.log(logger, level, msg, params); - } - - public static Object parseLevel(String levelName) { - ensureAvailable(); - return proxy.parseLevel(levelName); - } - - public static String getLevelName(Object level) { - ensureAvailable(); - return proxy.getLevelName(level); - } - - public static int getLevelValue(Object level) { - ensureAvailable(); - return proxy.getLevelValue(level); - } - - // Since JDK 9, logging uses java.time to get more precise time stamps. - // It is possible to configure the simple format to print nano seconds (.%1$tN) - // by specifying: - // java.util.logging.SimpleFormatter.format=%1$tb %1$td, %1$tY %1$tl:%1$tM:%1$tS.%1$tN %1$Tp %2$s%n%4$s: %5$s%6$s%n - // in the logging configuration - private static final String DEFAULT_FORMAT = - "%1$tb %1$td, %1$tY %1$tl:%1$tM:%1$tS %1$Tp %2$s%n%4$s: %5$s%6$s%n"; - - private static final String FORMAT_PROP_KEY = "java.util.logging.SimpleFormatter.format"; - public static String getSimpleFormat() { - return getSimpleFormat(true); - } - - // useProxy if true will cause initialization of - // java.util.logging and read its configuration - static String getSimpleFormat(boolean useProxy) { - String format = - AccessController.doPrivileged( - new PrivilegedAction() { - public String run() { - return System.getProperty(FORMAT_PROP_KEY); - } - }); - - if (useProxy && proxy != null && format == null) { - format = proxy.getProperty(FORMAT_PROP_KEY); - } - - if (format != null) { - try { - // validate the user-defined format string - String.format(format, ZonedDateTime.now(), "", "", "", "", ""); - } catch (IllegalArgumentException e) { - // illegal syntax; fall back to the default format - format = DEFAULT_FORMAT; - } - } else { - format = DEFAULT_FORMAT; - } - return format; - } - -}