mirror of
https://github.com/yacy/yacy_search_server.git
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469 lines
20 KiB
Java
469 lines
20 KiB
Java
// Log.java
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// -------------------------------------
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// (C) by Michael Peter Christen; mc@yacy.net
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package net.yacy.kelondro.logging;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.PrintStream;
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import java.lang.reflect.InvocationTargetException;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.concurrent.ArrayBlockingQueue;
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import java.util.concurrent.BlockingQueue;
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import java.util.logging.FileHandler;
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import java.util.logging.Level;
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import java.util.logging.LogManager;
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import java.util.logging.Logger;
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public final class Log {
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// log-level categories
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public static final int LOGLEVEL_ZERO = Level.OFF.intValue(); // no output at all
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public static final int LOGLEVEL_SEVERE = Level.SEVERE.intValue(); // system-level error, internal cause, critical and not fixeable (i.e. inconsistency)
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public static final int LOGLEVEL_WARNING = Level.WARNING.intValue(); // uncritical service failure, may require user activity (i.e. input required, wrong authorization)
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public static final int LOGLEVEL_CONFIG = Level.CONFIG.intValue(); // regular system status information (i.e. start-up messages)
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public static final int LOGLEVEL_INFO = Level.INFO.intValue(); // regular action information (i.e. any httpd request URL)
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public static final int LOGLEVEL_FINE = Level.FINE.intValue(); // in-function status debug output
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public static final int LOGLEVEL_FINER = Level.FINER.intValue(); // in-function status debug output
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public static final int LOGLEVEL_FINEST = Level.FINEST.intValue(); // in-function status debug output
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// these categories are also present as character tokens
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public static final char LOGTOKEN_ZERO = 'Z';
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public static final char LOGTOKEN_SEVERE = 'E';
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public static final char LOGTOKEN_WARNING = 'W';
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public static final char LOGTOKEN_CONFIG = 'S';
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public static final char LOGTOKEN_INFO = 'I';
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public static final char LOGTOKEN_FINE = 'D';
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public static final char LOGTOKEN_FINER = 'D';
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public static final char LOGTOKEN_FINEST = 'D';
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private final Logger theLogger;
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public Log(final String appName) {
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this.theLogger = Logger.getLogger(appName);
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//this.theLogger.setLevel(Level.FINEST); // set a default level
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}
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public final void setLevel(final Level newLevel) {
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this.theLogger.setLevel(newLevel);
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}
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public final void logSevere(final String message) {
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enQueueLog(this.theLogger, Level.SEVERE, message);
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}
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public final void logSevere(final String message, final Throwable thrown) {
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if (thrown == null) return;
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enQueueLog(this.theLogger, Level.SEVERE, message, thrown);
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}
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public final boolean isSevere() {
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return this.theLogger.isLoggable(Level.SEVERE);
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}
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public final void logWarning(final String message) {
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enQueueLog(this.theLogger, Level.WARNING, message);
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}
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public final void logWarning(final String message, final Throwable thrown) {
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if (thrown == null) return;
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enQueueLog(this.theLogger, Level.WARNING, message, thrown);
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}
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public final boolean isWarning() {
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return this.theLogger.isLoggable(Level.WARNING);
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}
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public final void logConfig(final String message) {
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enQueueLog(this.theLogger, Level.CONFIG, message);
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}
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public final void logConfig(final String message, final Throwable thrown) {
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if (thrown == null) return;
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enQueueLog(this.theLogger, Level.CONFIG, message, thrown);
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}
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public final boolean isConfig() {
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return this.theLogger.isLoggable(Level.CONFIG);
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}
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public final void logInfo(final String message) {
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enQueueLog(this.theLogger, Level.INFO, message);
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}
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public final void logInfo(final String message, final Throwable thrown) {
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if (thrown == null) return;
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enQueueLog(this.theLogger, Level.INFO, message, thrown);
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}
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public boolean isInfo() {
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return this.theLogger.isLoggable(Level.INFO);
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}
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public final void logFine(final String message) {
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enQueueLog(this.theLogger, Level.FINE, message);
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}
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public final void logFine(final String message, final Throwable thrown) {
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if (thrown == null) return;
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enQueueLog(this.theLogger, Level.FINE, message, thrown);
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}
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public final boolean isFine() {
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return this.theLogger.isLoggable(Level.FINE);
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}
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public final void logFiner(final String message) {
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enQueueLog(this.theLogger, Level.FINER, message);
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}
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public final void logFiner(final String message, final Throwable thrown) {
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if (thrown == null) return;
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enQueueLog(this.theLogger, Level.FINER, message, thrown);
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}
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public final boolean isFiner() {
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return this.theLogger.isLoggable(Level.FINER);
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}
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public final void logFinest(final String message) {
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enQueueLog(this.theLogger, Level.FINEST, message);
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}
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public final void logFinest(final String message, final Throwable thrown) {
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if (thrown == null) return;
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enQueueLog(this.theLogger, Level.FINEST, message, thrown);
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}
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public final boolean isFinest() {
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return this.theLogger.isLoggable(Level.FINEST);
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}
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public final boolean isLoggable(final Level level) {
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return this.theLogger.isLoggable(level);
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}
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// static log messages
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public final static void logSevere(final String appName, final String message) {
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enQueueLog(appName, Level.SEVERE, message);
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}
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public final static void logSevere(final String appName, final String message, final Throwable thrown) {
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if (thrown == null) return;
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enQueueLog(appName, Level.SEVERE, message, thrown);
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}
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public final static void logWarning(final String appName, final String message) {
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enQueueLog(appName, Level.WARNING, message);
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}
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public final static void logException(final Throwable thrown) {
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if (thrown == null) return;
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enQueueLog("StackTrace", Level.WARNING, thrown.getMessage(), thrown);
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}
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public final static void logWarning(final String appName, final String message, final Throwable thrown) {
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if (thrown == null) return;
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enQueueLog(appName, Level.WARNING, message, thrown);
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}
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public final static void logConfig(final String appName, final String message) {
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enQueueLog(appName, Level.CONFIG, message);
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}
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public final static void logConfig(final String appName, final String message, final Throwable thrown) {
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if (thrown == null) return;
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enQueueLog(appName, Level.CONFIG, message, thrown);
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}
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public final static void logInfo(final String appName, final String message) {
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enQueueLog(appName, Level.INFO, message);
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}
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public final static void logInfo(final String appName, final String message, final Throwable thrown) {
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if (thrown == null) return;
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enQueueLog(appName, Level.INFO, message, thrown);
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}
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public final static void logFine(final String appName, final String message) {
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enQueueLog(appName, Level.FINE, message);
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}
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public final static void logFine(final String appName, final String message, final Throwable thrown) {
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if (thrown == null) return;
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enQueueLog(appName, Level.FINE, message, thrown);
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}
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public final static boolean isFine(final String appName) {
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return Logger.getLogger(appName).isLoggable(Level.FINE);
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}
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public final static void logFiner(final String appName, final String message) {
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enQueueLog(appName, Level.FINER, message);
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}
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public final static void logFiner(final String appName, final String message, final Throwable thrown) {
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if (thrown == null) return;
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enQueueLog(appName, Level.FINER, message, thrown);
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}
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public final static void logFinest(final String appName, final String message) {
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enQueueLog(appName, Level.FINEST, message);
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}
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public final static void logFinest(final String appName, final String message, final Throwable thrown) {
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if (thrown == null) return;
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enQueueLog(appName, Level.FINEST, message, thrown);
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}
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public final static boolean isFinest(final String appName) {
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return Logger.getLogger(appName).isLoggable(Level.FINEST);
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}
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private final static void enQueueLog(final Logger logger, final Level level, final String message, final Throwable thrown) {
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if (!logger.isLoggable(level)) return;
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if (logRunnerThread == null || !logRunnerThread.isAlive()) {
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if (thrown == null) logger.log(level, message); else logger.log(level, message, thrown);
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} else {
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try {
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if (thrown == null) logQueue.put(new logEntry(logger, level, message)); else logQueue.put(new logEntry(logger, level, message, thrown));
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} catch (final InterruptedException e) {
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if (thrown == null) logger.log(level, message); else logger.log(level, message, thrown);
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}
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}
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}
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private final static void enQueueLog(final Logger logger, final Level level, final String message) {
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if (!logger.isLoggable(level)) return;
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if (logRunnerThread == null || !logRunnerThread.isAlive()) {
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logger.log(level, message);
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} else {
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try {
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logQueue.put(new logEntry(logger, level, message));
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} catch (final InterruptedException e) {
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logger.log(level, message);
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}
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}
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}
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private final static void enQueueLog(final String loggername, final Level level, final String message, final Throwable thrown) {
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if (logRunnerThread == null || !logRunnerThread.isAlive()) {
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if (thrown == null) Logger.getLogger(loggername).log(level, message); else Logger.getLogger(loggername).log(level, message, thrown);
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} else {
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try {
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if (thrown == null) logQueue.put(new logEntry(loggername, level, message)); else logQueue.put(new logEntry(loggername, level, message, thrown));
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} catch (final InterruptedException e) {
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if (thrown == null) Logger.getLogger(loggername).log(level, message); else Logger.getLogger(loggername).log(level, message, thrown);
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}
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}
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}
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private final static void enQueueLog(final String loggername, final Level level, final String message) {
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if (logRunnerThread == null || !logRunnerThread.isAlive()) {
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Logger.getLogger(loggername).log(level, message);
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} else {
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try {
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logQueue.put(new logEntry(loggername, level, message));
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} catch (final InterruptedException e) {
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Logger.getLogger(loggername).log(level, message);
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}
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}
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}
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protected final static class logEntry {
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public final Level level;
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public final String message;
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public Logger logger;
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public String loggername;
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public Throwable thrown;
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private logEntry(final Level level, final String message) {
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this.level = level;
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this.message = message == null || message.length() <= 512 ? message : message.substring(0, 512);
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}
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public logEntry(final Logger logger, final Level level, final String message, final Throwable thrown) {
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this(level, message);
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this.logger = logger;
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this.loggername = null;
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this.thrown = thrown;
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}
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public logEntry(final Logger logger, final Level level, final String message) {
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this(level, message);
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this.logger = logger;
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this.loggername = null;
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this.thrown = null;
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}
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public logEntry(final String loggername, final Level level, final String message, final Throwable thrown) {
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this(level, message);
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this.logger = null;
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this.loggername = loggername;
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this.thrown = thrown;
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}
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public logEntry(final String loggername, final Level level, final String message) {
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this(level, message);
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this.logger = null;
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this.loggername = loggername;
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this.thrown = null;
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}
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public logEntry() {
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this.logger = null;
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this.loggername = null;
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this.level = null;
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this.message = null;
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this.thrown = null;
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}
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}
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protected final static logEntry poison = new logEntry();
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protected final static BlockingQueue<logEntry> logQueue = new ArrayBlockingQueue<logEntry>(300);
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private final static logRunner logRunnerThread = new logRunner();
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static {
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logRunnerThread.start();
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}
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protected final static class logRunner extends Thread {
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public logRunner() {
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super("Log Runner");
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}
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@Override
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public void run() {
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logEntry entry;
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Map<String, Logger> loggerCache = new HashMap<String, Logger>();
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//Map<String, AtomicInteger> loggerCounter = new HashMap<String, AtomicInteger>();
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try {
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while ((entry = logQueue.take()) != poison) {
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if (entry.logger == null) {
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assert entry.loggername != null;
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//AtomicInteger i = loggerCounter.get(entry.loggername);
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//if (i == null) {i = new AtomicInteger(0); loggerCounter.put(entry.loggername, i);}
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//i.incrementAndGet();
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Logger l = loggerCache.get(entry.loggername);
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if (l == null) {l = Logger.getLogger(entry.loggername); loggerCache.put(entry.loggername, l);}
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if (entry.thrown == null) {
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l.log(entry.level, entry.message);
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} else {
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l.log(entry.level, entry.message, entry.thrown);
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}
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} else {
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assert entry.loggername == null;
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if (entry.thrown == null) {
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entry.logger.log(entry.level, entry.message);
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} else {
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entry.logger.log(entry.level, entry.message, entry.thrown);
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}
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}
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}
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} catch (final InterruptedException e) {
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Log.logException(e);
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}
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//Logger.getLogger("Log").log(Level.INFO, "closing logRunner with cached loggers: " + loggerCounter.entrySet().toString());
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}
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}
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public final static void configureLogging(final File dataPath, final File appPath, final File loggingConfigFile) throws SecurityException, FileNotFoundException, IOException {
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FileInputStream fileIn = null;
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try {
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System.out.println("STARTUP: Trying to load logging configuration from file " + loggingConfigFile.toString());
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fileIn = new FileInputStream(loggingConfigFile);
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// loading the logger configuration from file
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final LogManager logManager = LogManager.getLogManager();
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logManager.readConfiguration(fileIn);
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// creating the logging directory
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String logPattern = logManager.getProperty("java.util.logging.FileHandler.pattern");
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int stripPos = logPattern.lastIndexOf(File.separatorChar);
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if (!new File(logPattern).isAbsolute()) logPattern = new File(dataPath, logPattern).getAbsolutePath();
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if (stripPos < 0) stripPos = logPattern.lastIndexOf(File.separatorChar);
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File log = new File(logPattern.substring(0, stripPos));
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if (!log.isAbsolute()) log = new File(dataPath, log.getPath());
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if (!log.canRead()) log.mkdir();
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// generating the root logger
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final Logger logger = Logger.getLogger("");
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logger.setUseParentHandlers(false);
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//for (Handler h: logger.getHandlers()) logger.removeHandler(h);
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if (!dataPath.getAbsolutePath().equals(appPath.getAbsolutePath())) {
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final FileHandler handler = new FileHandler(logPattern, 1024*1024, 20, true);
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logger.addHandler(handler);
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}
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// redirect uncaught exceptions to logging
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final Log exceptionLog = new Log("UNCAUGHT-EXCEPTION");
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Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler(){
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@Override
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public void uncaughtException(final Thread t, final Throwable e) {
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if (e == null) return;
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final String msg = String.format("Thread %s: %s",t.getName(), e.getMessage());
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final ByteArrayOutputStream baos = new ByteArrayOutputStream();
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final PrintStream ps = new PrintStream(baos);
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e.printStackTrace(ps);
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ps.close();
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exceptionLog.logSevere(msg + "\n" + baos.toString(), e);
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Log.logException(e);
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Log.logException(e.getCause());
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if (e instanceof InvocationTargetException) Log.logException(((InvocationTargetException) e).getTargetException());
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}
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});
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} finally {
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if (fileIn != null) try {fileIn.close();}catch(final Exception e){}
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}
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}
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public final static void shutdown() {
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if (logRunnerThread == null || !logRunnerThread.isAlive()) return;
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try {
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logQueue.put(poison);
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logRunnerThread.join(1000);
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} catch (final InterruptedException e) {
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}
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}
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public final static String format(final String s, int n, final int fillChar) {
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final int l = s.length();
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if (l >= n) return s;
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final StringBuilder sb = new StringBuilder(l + n);
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for (final int i = l + n; i > n; n--) sb.insert(0, fillChar);
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return sb.toString();
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}
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public final static boolean allZero(final byte[] a) {
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return allZero(a, 0, a.length);
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}
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public final static boolean allZero(final byte[] a, final int astart, final int alength) {
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for (int i = 0; i < alength; i++) if (a[astart + i] != 0) return false;
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return true;
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}
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public static String stackTrace() {
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Throwable t = new Throwable();
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StackTraceElement[] e = t.getStackTrace();
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StringBuilder sb = new StringBuilder(80);
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for (int i = 2; i < e.length - 1; i++) {
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sb.append(e[i].toString()).append(" -> ");
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}
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sb.append(e[e.length - 1].toString());
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return sb.toString();
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}
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}
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