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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2011 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
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* Version 2] license." If you don't indicate a single choice of license, a
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*/
package com.sun.enterprise.web.logger;
import com.sun.enterprise.util.logging.IASLevel;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* An implementation of Logger that writes log messages
* using JDK 1.4's logging API.
*
* @author Arvind Srinivasan
* @author Neelam Vaidya
* @version $Revision: 1.4 $
*/
public final class IASLogger extends LoggerBase {
// ----------------------------------------------------- Instance Variables
/**
* The server wide log message handler.
*/
Logger _logger = null;
/**
* Classname of the object invoking the log method.
*/
private String _classname;
/**
* Name of the method invoking the log method.
*/
private String _methodname;
/**
* The descriptive information about this implementation.
*/
private static final String info =
"com.sun.enterprise.web.logger.IASLogger/1.0";
// ----------------------------------------------------------- Constructors
/**
* Deny void construction.
*/
private IASLogger() {
super();
}
/**
* Construct a new instance of this class, that uses the specified
* logger instance.
*
* @param logger The logger to send log messages to
*/
public IASLogger(Logger logger) {
_logger = logger;
}
// ------------------------------------------------------ Protected Methods
/**
* Logs the message to the JDK 1.4 logger that handles all log
* messages for the iPlanet Application Server.
*/
protected void write(String msg, int verbosity) {
if (_logger == null)
return;
Level level = Level.INFO;
if (verbosity == FATAL)
level = (Level)IASLevel.FATAL;
else if (verbosity == ERROR)
level = Level.SEVERE;
else if (verbosity == WARNING)
level = Level.WARNING;
else if (verbosity == INFORMATION)
level = Level.INFO;
else if (verbosity == DEBUG)
level = Level.FINER;
inferCaller();
_logger.logp(level, _classname, _methodname, msg);
}
// ------------------------------------------------------ Private Methods
/**
* Examine the call stack and determine the name of the method and the
* name of the class logging the message.
*/
private void inferCaller() {
// Get the stack trace.
StackTraceElement stack[] = (new Throwable()).getStackTrace();
_classname = "";
_methodname = "";
for (int ix=0; ix < stack.length; ix++) {
StackTraceElement frame = stack[ix];
_classname = frame.getClassName();
if (!_classname.startsWith("com.sun.enterprise.web.logger")) {
// We've found the relevant frame. Get Method Name.
_methodname = frame.getMethodName();
return;
}
}
}
}