| /******************************************************************************* |
| * Copyright (c) 2004, 2007 Boeing. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Boeing - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.osee.logger.slf4j.internal; |
| |
| import org.eclipse.osee.logger.Log; |
| import org.osgi.framework.Bundle; |
| import org.osgi.service.component.ComponentContext; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.slf4j.Marker; |
| import org.slf4j.MarkerFactory; |
| |
| /** |
| * @author Roberto E. Escobar |
| */ |
| public class Sfl4jLogImpl implements Log { |
| |
| private static final int LOG_ERROR = 1; |
| private static final int LOG_WARNING = 2; |
| private static final int LOG_INFO = 3; |
| private static final int LOG_DEBUG = 4; |
| private static final int LOG_TRACE = 5; |
| |
| private Logger logger; |
| private Marker marker; |
| |
| public void start(ComponentContext context) { |
| if (logger == null) { |
| Bundle usingBundle = context.getUsingBundle(); |
| String symbolicName = null; |
| if (usingBundle != null) { |
| symbolicName = usingBundle.getSymbolicName(); |
| } else { |
| symbolicName = "Osee Log"; |
| } |
| logger = LoggerFactory.getLogger(symbolicName); |
| marker = MarkerFactory.getMarker(symbolicName); |
| debug("Logger setup for [%s]", logger.getName()); |
| } |
| } |
| |
| public void stop() { |
| logger = null; |
| marker = null; |
| } |
| |
| private Logger getLogger() { |
| return logger; |
| } |
| |
| @Override |
| public boolean isTraceEnabled() { |
| return isEnabled(LOG_TRACE); |
| } |
| |
| @Override |
| public void trace(String format, Object... args) { |
| trace(null, format, args); |
| } |
| |
| @Override |
| public void trace(Throwable th, String format, Object... args) { |
| logHelper(LOG_TRACE, th, format, args); |
| } |
| |
| @Override |
| public boolean isDebugEnabled() { |
| return isEnabled(LOG_DEBUG); |
| } |
| |
| @Override |
| public void debug(String format, Object... args) { |
| debug(null, format, args); |
| } |
| |
| @Override |
| public void debug(Throwable th, String format, Object... args) { |
| logHelper(LOG_DEBUG, th, format, args); |
| } |
| |
| @Override |
| public boolean isInfoEnabled() { |
| return isEnabled(LOG_INFO); |
| } |
| |
| @Override |
| public void info(String format, Object... args) { |
| info(null, format, args); |
| } |
| |
| @Override |
| public void info(Throwable th, String format, Object... args) { |
| logHelper(LOG_INFO, th, format, args); |
| } |
| |
| @Override |
| public boolean isWarnEnabled() { |
| return isEnabled(LOG_WARNING); |
| } |
| |
| @Override |
| public void warn(String format, Object... args) { |
| warn(null, format, args); |
| } |
| |
| @Override |
| public void warn(Throwable th, String format, Object... args) { |
| logHelper(LOG_WARNING, th, format, args); |
| } |
| |
| @Override |
| public boolean isErrorEnabled() { |
| return isEnabled(LOG_ERROR); |
| } |
| |
| @Override |
| public void error(String format, Object... args) { |
| error(null, format, args); |
| } |
| |
| @Override |
| public void error(Throwable th, String format, Object... args) { |
| logHelper(LOG_ERROR, th, format, args); |
| } |
| |
| private boolean isEnabled(int level) { |
| boolean result = false; |
| final Logger logger = getLogger(); |
| if (logger != null) { |
| switch (level) { |
| case LOG_DEBUG: |
| result = logger.isDebugEnabled(); |
| break; |
| case LOG_ERROR: |
| result = logger.isErrorEnabled(); |
| break; |
| case LOG_WARNING: |
| result = logger.isWarnEnabled(); |
| break; |
| case LOG_INFO: |
| result = logger.isInfoEnabled(); |
| break; |
| default: |
| result = logger.isTraceEnabled(); |
| break; |
| } |
| } |
| return result; |
| } |
| |
| private void logHelper(int level, Throwable th, String format, Object... args) { |
| logHelper(null, level, th, format, args); |
| } |
| |
| private void logHelper(Object context, int level, Throwable th, String format, Object... args) { |
| final Logger logger = getLogger(); |
| if (isEnabled(level)) { |
| String message = safeFormat(format, args); |
| if (message != null) { |
| switch (level) { |
| case LOG_DEBUG: |
| logger.debug(marker, message, th); |
| break; |
| case LOG_ERROR: |
| logger.error(marker, message, th); |
| break; |
| case LOG_WARNING: |
| logger.warn(marker, message, th); |
| break; |
| case LOG_INFO: |
| logger.info(marker, message, th); |
| break; |
| default: |
| logger.trace(marker, message, th); |
| break; |
| } |
| } |
| } |
| } |
| |
| private static String safeFormat(String message, Object... args) { |
| String toReturn; |
| try { |
| toReturn = String.format(message, args); |
| } catch (RuntimeException ex) { |
| StringBuilder builder = new StringBuilder(); |
| builder.append("Log message could not be formatted:"); |
| builder.append(message); |
| builder.append(" with the following arguments ["); |
| builder.append(org.eclipse.osee.framework.jdk.core.util.Collections.toString(",", args)); |
| builder.append("]. Cause ["); |
| builder.append(ex.toString()); |
| builder.append("]"); |
| toReturn = builder.toString(); |
| } |
| return toReturn; |
| } |
| |
| } |