Class SimpleLog
- java.lang.Object
-
- org.apache.commons.discovery.log.SimpleLog
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- All Implemented Interfaces:
org.apache.commons.logging.Log
public class SimpleLog extends java.lang.Object implements org.apache.commons.logging.Log
Simple implementation of Log that sends all enabled log messages, for all defined loggers, to System.err.
Hacked from commons-logging SimpleLog for use in discovery. This is intended to be enough of a Log implementation to bootstrap Discovery.
One property:
org.apache.commons.discovery.log.level
. valid values: all, trace, debug, info, warn, error, fatal, off.- Version:
- $Id: SimpleLog.java 480374 2006-11-29 03:33:25Z niallp $
- Author:
- Richard A. Sitze, Scott Sanders, Rod Waldhoff, Robert Burrell Donkin
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Field Summary
Fields Modifier and Type Field Description protected static java.text.DateFormat
dateFormatter
Used to format timesstatic int
LOG_LEVEL_ALL
Enable all logging levelsstatic int
LOG_LEVEL_DEBUG
"Debug" level logging.static int
LOG_LEVEL_ERROR
"Error" level logging.static int
LOG_LEVEL_FATAL
"Fatal" level logging.static int
LOG_LEVEL_INFO
"Info" level logging.static int
LOG_LEVEL_OFF
Enable no logging levelsstatic int
LOG_LEVEL_TRACE
"Trace" level logging.static int
LOG_LEVEL_WARN
"Warn" level logging.protected static int
logLevel
The current log levelprotected java.lang.String
logName
The name of this simple log instanceprotected static java.lang.String
PROP_LEVEL
protected static boolean
showDateTime
Include the current time in the log messageprotected static boolean
showLogName
Include the instance name in the log message?protected static boolean
showShortName
Include the short name ( last component ) of the logger in the log message.
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Constructor Summary
Constructors Constructor Description SimpleLog(java.lang.String name)
Construct a simple log with given name.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description void
debug(java.lang.Object message)
Log a message with debug log level.void
debug(java.lang.Object message, java.lang.Throwable t)
Log an error with debug log level.void
error(java.lang.Object message)
Log a message with error log level.void
error(java.lang.Object message, java.lang.Throwable t)
Log an error with error log level.void
fatal(java.lang.Object message)
Log a message with fatal log level.void
fatal(java.lang.Object message, java.lang.Throwable t)
Log an error with fatal log level.static int
getLevel()
Get logging level.void
info(java.lang.Object message)
Log a message with info log level.void
info(java.lang.Object message, java.lang.Throwable t)
Log an error with info log level.boolean
isDebugEnabled()
Are debug messages currently enabled?boolean
isErrorEnabled()
Are error messages currently enabled?boolean
isFatalEnabled()
Are fatal messages currently enabled?boolean
isInfoEnabled()
Are info messages currently enabled?protected static boolean
isLevelEnabled(int level)
Is the given log level currently enabled?boolean
isTraceEnabled()
Are trace messages currently enabled?boolean
isWarnEnabled()
Are warn messages currently enabled?protected void
log(int type, java.lang.Object message, java.lang.Throwable t)
Do the actual logging.static void
setLevel(int currentLogLevel)
Set logging level.void
trace(java.lang.Object message)
Log a message with debug log level.void
trace(java.lang.Object message, java.lang.Throwable t)
Log an error with debug log level.void
warn(java.lang.Object message)
Log a message with warn log level.void
warn(java.lang.Object message, java.lang.Throwable t)
Log an error with warn log level.
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Field Detail
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LOG_LEVEL_TRACE
public static final int LOG_LEVEL_TRACE
"Trace" level logging.- See Also:
- Constant Field Values
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LOG_LEVEL_DEBUG
public static final int LOG_LEVEL_DEBUG
"Debug" level logging.- See Also:
- Constant Field Values
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LOG_LEVEL_INFO
public static final int LOG_LEVEL_INFO
"Info" level logging.- See Also:
- Constant Field Values
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LOG_LEVEL_WARN
public static final int LOG_LEVEL_WARN
"Warn" level logging.- See Also:
- Constant Field Values
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LOG_LEVEL_ERROR
public static final int LOG_LEVEL_ERROR
"Error" level logging.- See Also:
- Constant Field Values
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LOG_LEVEL_FATAL
public static final int LOG_LEVEL_FATAL
"Fatal" level logging.- See Also:
- Constant Field Values
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LOG_LEVEL_ALL
public static final int LOG_LEVEL_ALL
Enable all logging levels- See Also:
- Constant Field Values
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LOG_LEVEL_OFF
public static final int LOG_LEVEL_OFF
Enable no logging levels- See Also:
- Constant Field Values
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PROP_LEVEL
protected static final java.lang.String PROP_LEVEL
- See Also:
- Constant Field Values
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showLogName
protected static boolean showLogName
Include the instance name in the log message?
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showShortName
protected static boolean showShortName
Include the short name ( last component ) of the logger in the log message. Default to true - otherwise we'll be lost in a flood of messages without knowing who sends them.
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showDateTime
protected static boolean showDateTime
Include the current time in the log message
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dateFormatter
protected static java.text.DateFormat dateFormatter
Used to format times
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logLevel
protected static int logLevel
The current log level
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logName
protected java.lang.String logName
The name of this simple log instance
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Method Detail
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setLevel
public static void setLevel(int currentLogLevel)
Set logging level.
- Parameters:
currentLogLevel
- new logging level
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getLevel
public static int getLevel()
Get logging level.
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isLevelEnabled
protected static boolean isLevelEnabled(int level)
Is the given log level currently enabled?- Parameters:
level
- is this level enabled?
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log
protected void log(int type, java.lang.Object message, java.lang.Throwable t)
Do the actual logging. This method assembles the message and then prints to
System.err
.
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debug
public final void debug(java.lang.Object message)
Log a message with debug log level.
- Specified by:
debug
in interfaceorg.apache.commons.logging.Log
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debug
public final void debug(java.lang.Object message, java.lang.Throwable t)
Log an error with debug log level.
- Specified by:
debug
in interfaceorg.apache.commons.logging.Log
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trace
public final void trace(java.lang.Object message)
Log a message with debug log level.
- Specified by:
trace
in interfaceorg.apache.commons.logging.Log
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trace
public final void trace(java.lang.Object message, java.lang.Throwable t)
Log an error with debug log level.
- Specified by:
trace
in interfaceorg.apache.commons.logging.Log
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info
public final void info(java.lang.Object message)
Log a message with info log level.
- Specified by:
info
in interfaceorg.apache.commons.logging.Log
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info
public final void info(java.lang.Object message, java.lang.Throwable t)
Log an error with info log level.
- Specified by:
info
in interfaceorg.apache.commons.logging.Log
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warn
public final void warn(java.lang.Object message)
Log a message with warn log level.
- Specified by:
warn
in interfaceorg.apache.commons.logging.Log
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warn
public final void warn(java.lang.Object message, java.lang.Throwable t)
Log an error with warn log level.
- Specified by:
warn
in interfaceorg.apache.commons.logging.Log
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error
public final void error(java.lang.Object message)
Log a message with error log level.
- Specified by:
error
in interfaceorg.apache.commons.logging.Log
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error
public final void error(java.lang.Object message, java.lang.Throwable t)
Log an error with error log level.
- Specified by:
error
in interfaceorg.apache.commons.logging.Log
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fatal
public final void fatal(java.lang.Object message)
Log a message with fatal log level.
- Specified by:
fatal
in interfaceorg.apache.commons.logging.Log
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fatal
public final void fatal(java.lang.Object message, java.lang.Throwable t)
Log an error with fatal log level.
- Specified by:
fatal
in interfaceorg.apache.commons.logging.Log
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isDebugEnabled
public final boolean isDebugEnabled()
Are debug messages currently enabled?
This allows expensive operations such as
String
concatenation to be avoided when the message will be ignored by the logger.- Specified by:
isDebugEnabled
in interfaceorg.apache.commons.logging.Log
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isErrorEnabled
public final boolean isErrorEnabled()
Are error messages currently enabled?
This allows expensive operations such as
String
concatenation to be avoided when the message will be ignored by the logger.- Specified by:
isErrorEnabled
in interfaceorg.apache.commons.logging.Log
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isFatalEnabled
public final boolean isFatalEnabled()
Are fatal messages currently enabled?
This allows expensive operations such as
String
concatenation to be avoided when the message will be ignored by the logger.- Specified by:
isFatalEnabled
in interfaceorg.apache.commons.logging.Log
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isInfoEnabled
public final boolean isInfoEnabled()
Are info messages currently enabled?
This allows expensive operations such as
String
concatenation to be avoided when the message will be ignored by the logger.- Specified by:
isInfoEnabled
in interfaceorg.apache.commons.logging.Log
-
isTraceEnabled
public final boolean isTraceEnabled()
Are trace messages currently enabled?
This allows expensive operations such as
String
concatenation to be avoided when the message will be ignored by the logger.- Specified by:
isTraceEnabled
in interfaceorg.apache.commons.logging.Log
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isWarnEnabled
public final boolean isWarnEnabled()
Are warn messages currently enabled?
This allows expensive operations such as
String
concatenation to be avoided when the message will be ignored by the logger.- Specified by:
isWarnEnabled
in interfaceorg.apache.commons.logging.Log
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