Mercurial > hg > blitz_stable
view src/com/go/trove/log/Syslog.java @ 8:fa7203ea1622
Remove some dead code (Dave Brosius)
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 23 May 2009 11:27:41 +0100 |
parents | 3dc0c5604566 |
children |
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/* ==================================================================== * Trove - Copyright (c) 1997-2000 Walt Disney Internet Group * ==================================================================== * The Tea Software License, Version 1.1 * * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: * "This product includes software developed by the * Walt Disney Internet Group (http://opensource.go.com/)." * Alternately, this acknowledgment may appear in the software itself, * if and wherever such third-party acknowledgments normally appear. * * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must * not be used to endorse or promote products derived from this * software without prior written permission. For written * permission, please contact opensource@dig.com. * * 5. Products derived from this software may not be called "Tea", * "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet", * "Kettle", "Trove" or "BeanDoc" appear in their name, without prior * written permission of the Walt Disney Internet Group. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * For more information about Tea, please see http://opensource.go.com/. */ package com.go.trove.log; import java.io.*; /****************************************************************************** * Contains references to a static Log instance that can be used for general * system-wide logging. By default, log messages are written to System.out * or System.err. When "installed", all output provided to System.out * and System.err is redirected into the system log. * * @author Brian S O'Neill * @version * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 9/07/00 <!-- $--> * @see Log */ public class Syslog { private static final Log cLog; private static final LogListener cSystemLogEventPrinter; private static LogEventParsingOutputStream cSystemOut; private static LogEventParsingOutputStream cSystemErr; private static PrintStream cOriginalOut; private static PrintStream cOriginalErr; private static boolean cInstalled; static { cLog = new Log(null, null); cLog.setDescription("System Log"); cSystemLogEventPrinter = new LogListener() { public void logMessage(LogEvent e) { PrintStream ps = getPrintStream(e); String message = e.getMessage(); if (message == null) { ps.println(); } else { ps.println(message); } } public void logException(LogEvent e) { Throwable t = e.getException(); if (t == null) { logMessage(e); } else { t.printStackTrace(getPrintStream(e)); } } private PrintStream getPrintStream(LogEvent e) { synchronized (log()) { switch (e.getType()) { case LogEvent.DEBUG_TYPE: case LogEvent.INFO_TYPE: return (cInstalled) ? cOriginalOut : System.out; } return (cInstalled) ? cOriginalErr : System.err; } } }; log().addLogListener(cSystemLogEventPrinter); } /** * Returns the system Log instance that, by default, only has one * LogListener. It prints debug and info LogEvent messages to System.out * and other LogEvent messages to System.err. * * @see #getSystemLogEventPrinter() */ public static Log log() { return cLog; } /** * Returns a simple LogListener that prints debug and info LogEvent * messages to System.out and other LogEvent messages to System.err. * Remove this listener to disable printing to System.out and System.err. */ public static LogListener getSystemLogEventPrinter() { return cSystemLogEventPrinter; } /** * When installed, System.out and System.err are redirected to Syslog.log. * System.out produces info events, and System.err produces error events. */ public static void install() { synchronized (log()) { if (!cInstalled) { cInstalled = true; cOriginalOut = System.out; cOriginalErr = System.err; cSystemOut = new LogEventParsingOutputStream (log(), LogEvent.INFO_TYPE) { public boolean isEnabled() { return log().isInfoEnabled(); } }; cSystemOut.addLogListener(log()); System.setOut(new PrintStream(cSystemOut, true)); cSystemErr = new LogEventParsingOutputStream (log(), LogEvent.ERROR_TYPE) { public boolean isEnabled() { return log().isErrorEnabled(); } }; cSystemErr.addLogListener(log()); System.setErr(new PrintStream(cSystemErr, true)); } } } /** * Uninstalls by restoring System.out and System.err. */ public static void uninstall() { synchronized (log()) { if (cInstalled) { cInstalled = false; System.setOut(cOriginalOut); System.setErr(cOriginalErr); cOriginalOut = null; cOriginalErr = null; cSystemOut = null; cSystemErr = null; } } } /** * Shortcut to {@link Log#debug(String) Syslog.log().debug(String)}. */ public static void debug(String s) { log().debug(s); } /** * Shortcut to {@link Log#debug(Throwable) Syslog.log().debug(Throwable)}. */ public static void debug(Throwable t) { log().debug(t); } /** * Shortcut to {@link Log#info(String) Syslog.log().info(String)}. */ public static void info(String s) { log().info(s); } /** * Shortcut to {@link Log#info(Throwable) Syslog.log().info(Throwable)}. */ public static void info(Throwable t) { log().info(t); } /** * Shortcut to {@link Log#warn(String) Syslog.log().warn(String)}. */ public static void warn(String s) { log().warn(s); } /** * Shortcut to {@link Log#warn(Throwable) Syslog.log().warn(Throwable)}. */ public static void warn(Throwable t) { log().warn(t); } /** * Shortcut to {@link Log#error(String) Syslog.log().error(String)}. */ public static void error(String s) { log().error(s); } /** * Shortcut to {@link Log#error(Throwable) Syslog.log().error(Throwable)}. */ public static void error(Throwable t) { log().error(t); } private Syslog() { } }