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//
// ========================================================================
// Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.util.log;
import java.util.Properties;
/* ------------------------------------------------------------ */
/** Abstract Logger.
* Manages the atomic registration of the logger by name.
*/
public abstract class AbstractLogger implements Logger
{
public static final int LEVEL_DEFAULT = -1;
public static final int LEVEL_ALL = 0;
public static final int LEVEL_DEBUG = 1;
public static final int LEVEL_INFO = 2;
public static final int LEVEL_WARN = 3;
public static final int LEVEL_OFF = 10;
@Override
public final Logger getLogger(String name)
{
if (isBlank(name))
return this;
final String basename = getName();
final String fullname = (isBlank(basename) || Log.getRootLogger()==this)?name:(basename + "." + name);
Logger logger = Log.getLoggers().get(fullname);
if (logger == null)
{
Logger newlog = newLogger(fullname);
logger = Log.getMutableLoggers().putIfAbsent(fullname,newlog);
if (logger == null)
logger=newlog;
}
return logger;
}
protected abstract Logger newLogger(String fullname);
/**
* A more robust form of name blank test. Will return true for null names, and names that have only whitespace
*
* @param name
* the name to test
* @return true for null or blank name, false if any non-whitespace character is found.
*/
private static boolean isBlank(String name)
{
if (name == null)
{
return true;
}
int size = name.length();
char c;
for (int i = 0; i < size; i++)
{
c = name.charAt(i);
if (!Character.isWhitespace(c))
{
return false;
}
}
return true;
}
/**
* Get the Logging Level for the provided log name. Using the FQCN first, then each package segment from longest to
* shortest.
*
* @param props
* the properties to check
* @param name
* the name to get log for
* @return the logging level
*/
public static int lookupLoggingLevel(Properties props, final String name)
{
if ((props == null) || (props.isEmpty()) || name==null )
return LEVEL_DEFAULT;
// Calculate the level this named logger should operate under.
// Checking with FQCN first, then each package segment from longest to shortest.
String nameSegment = name;
while ((nameSegment != null) && (nameSegment.length() > 0))
{
String levelStr = props.getProperty(nameSegment + ".LEVEL");
// System.err.printf("[StdErrLog.CONFIG] Checking for property [%s.LEVEL] = %s%n",nameSegment,levelStr);
int level = getLevelId(nameSegment + ".LEVEL",levelStr);
if (level != (-1))
{
return level;
}
// Trim and try again.
int idx = nameSegment.lastIndexOf('.');
if (idx >= 0)
{
nameSegment = nameSegment.substring(0,idx);
}
else
{
nameSegment = null;
}
}
// Default Logging Level
return LEVEL_DEFAULT;
}
public static String getLoggingProperty(Properties props, String name, String property)
{
// Calculate the level this named logger should operate under.
// Checking with FQCN first, then each package segment from longest to shortest.
String nameSegment = name;
while ((nameSegment != null) && (nameSegment.length() > 0))
{
String s = props.getProperty(nameSegment+"."+property);
if (s!=null)
return s;
// Trim and try again.
int idx = nameSegment.lastIndexOf('.');
nameSegment = (idx >= 0)?nameSegment.substring(0,idx):null;
}
return null;
}
protected static int getLevelId(String levelSegment, String levelName)
{
if (levelName == null)
{
return -1;
}
String levelStr = levelName.trim();
if ("ALL".equalsIgnoreCase(levelStr))
{
return LEVEL_ALL;
}
else if ("DEBUG".equalsIgnoreCase(levelStr))
{
return LEVEL_DEBUG;
}
else if ("INFO".equalsIgnoreCase(levelStr))
{
return LEVEL_INFO;
}
else if ("WARN".equalsIgnoreCase(levelStr))
{
return LEVEL_WARN;
}
else if ("OFF".equalsIgnoreCase(levelStr))
{
return LEVEL_OFF;
}
System.err.println("Unknown StdErrLog level [" + levelSegment + "]=[" + levelStr + "], expecting only [ALL, DEBUG, INFO, WARN, OFF] as values.");
return -1;
}
/**
* Condenses a classname by stripping down the package name to just the first character of each package name
* segment.Configured
*
* <pre>
* Examples:
* "org.eclipse.jetty.test.FooTest" = "oejt.FooTest"
* "org.eclipse.jetty.server.logging.LogTest" = "orjsl.LogTest"
* </pre>
*
* @param classname
* the fully qualified class name
* @return the condensed name
*/
protected static String condensePackageString(String classname)
{
String parts[] = classname.split("\\.");
StringBuilder dense = new StringBuilder();
for (int i = 0; i < (parts.length - 1); i++)
{
dense.append(parts[i].charAt(0));
}
if (dense.length() > 0)
{
dense.append('.');
}
dense.append(parts[parts.length - 1]);
return dense.toString();
}
public void debug(String msg, long arg)
{
if (isDebugEnabled())
{
debug(msg,new Object[] { new Long(arg) });
}
}
}
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