velosurf.util
Class Logger

java.lang.Object
  velosurf.util.Logger

public class Logger
extends java.lang.Object

this class is the logger used by velosurf

Author:

Claude Brisson

Field Summary

private static int	asyncLimit max number of lines to log in asynchronous mode
(package private) static java.io.StringWriter	asyncLog asynchronous log used at start
private static boolean	captureStderr whether the logger captures stderr
private static boolean	captureStdout whether the logger captures stdout
static int	DEBUG_ID debug messages loglevel
private static boolean	displayTimestamps whether to display timestamps
static int	ERROR_ID error messages loglevel
static int	FATAL_ID fatal messages loglevel
(package private) static java.text.SimpleDateFormat	format date format for timestamps
static int	INFO_ID info messages loglevel
private static boolean	initialized Did someone give me an otput writer ?
(package private) static int	lines
(package private) static java.io.PrintWriter	log log output printwriter
private static int	logLevel Current log level
(package private) static java.io.PrintStream	oldStderr stderr old value
(package private) static java.io.PrintStream	oldStdout stdout old value
static int	TRACE_ID trace messages loglevel
static int	WARN_ID warn messages loglevel

Constructor Summary

Logger()

Method Summary

static void	debug(java.lang.String s) logs a debug string
static void	dumpStack() dumps the current stack
static void	error(java.lang.String s) logs an error string
static void	fatal(java.lang.String s) logs a fatal error string
protected static void	flushAsyncLog() flush the asynchronous log in the output writer
static int	getLogLevel() Gets the current log level
static java.io.PrintWriter	getWriter() get the output writer
protected static java.lang.String	header() returns "Velosurf "
static void	info(java.lang.String s) logs an info string
static boolean	isInitialized() queries the initialized state
static void	log(int level, java.lang.String s) log a string using a verbose level
protected static void	log(java.lang.String s) logs a string
static void	log(java.lang.String s, java.lang.Throwable e) logs an exception with a string
static void	log(java.lang.Throwable e) log an exception
static void	log2Stderr() log to stderr
static void	log2Stdout() log to stdout
static void	setDisplayTimestamps(boolean timestamps) whether to display timestamps
static void	setLogLevel(int logLevel) Sets the log level
static void	setWriter(java.lang.Object out) set the output writer
static void	startCaptureStderr() redirects stderr towards the output writer
static void	startCaptureStdout() redirects stdout towards output writer
static void	stopCaptureStderr() stops redirecting stderr
static void	stopCaptureStdout() stop redirecting stdout
static void	trace(java.lang.String s) logs a tracing string
static void	warn(java.lang.String s) logs a warning string

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

TRACE_ID

public static final int TRACE_ID

trace messages loglevel

See Also:

Constant Field Values

DEBUG_ID

public static final int DEBUG_ID

debug messages loglevel

See Also:

Constant Field Values

INFO_ID

public static final int INFO_ID

info messages loglevel

See Also:

Constant Field Values

WARN_ID

public static final int WARN_ID

warn messages loglevel

See Also:

Constant Field Values

ERROR_ID

public static final int ERROR_ID

error messages loglevel

See Also:

Constant Field Values

FATAL_ID

public static final int FATAL_ID

fatal messages loglevel

See Also:

Constant Field Values

logLevel

private static int logLevel

Current log level

displayTimestamps

private static boolean displayTimestamps

whether to display timestamps

captureStdout

private static boolean captureStdout

whether the logger captures stdout

captureStderr

private static boolean captureStderr

whether the logger captures stderr

asyncLimit

private static int asyncLimit

max number of lines to log in asynchronous mode

initialized

private static boolean initialized

Did someone give me an otput writer ?

format

static java.text.SimpleDateFormat format

date format for timestamps

asyncLog

static java.io.StringWriter asyncLog

asynchronous log used at start

log

static java.io.PrintWriter log

log output printwriter

oldStdout

static java.io.PrintStream oldStdout

stdout old value

oldStderr

static java.io.PrintStream oldStderr

stderr old value

lines

static int lines

Constructor Detail

Logger

public Logger()

Method Detail

setLogLevel

public static void setLogLevel(int logLevel)

Sets the log level

Parameters:

logLevel - log level

setDisplayTimestamps

public static void setDisplayTimestamps(boolean timestamps)

whether to display timestamps

getLogLevel

public static int getLogLevel()

Gets the current log level

Returns:

the current log level

log

protected static void log(java.lang.String s)

logs a string

Parameters:

s - string

log

public static void log(java.lang.String s,
                       java.lang.Throwable e)

logs an exception with a string

Parameters:

s - string

e - exception

log

public static void log(java.lang.Throwable e)

log an exception

Parameters:

e - exception

log

public static void log(int level,
                       java.lang.String s)

log a string using a verbose level

Parameters:

level - verbose level

s - string to log

trace

public static void trace(java.lang.String s)

logs a tracing string

Parameters:

s - tracing string

debug

public static void debug(java.lang.String s)

logs a debug string

Parameters:

s - debug string

info

public static void info(java.lang.String s)

logs an info string

Parameters:

s - info string

warn

public static void warn(java.lang.String s)

logs a warning string

Parameters:

s - warning string

error

public static void error(java.lang.String s)

logs an error string

Parameters:

s - error string

fatal

public static void fatal(java.lang.String s)

logs a fatal error string

Parameters:

s - fatal error string

getWriter

public static java.io.PrintWriter getWriter()

get the output writer

Returns:

writer

setWriter

public static void setWriter(java.lang.Object out)

set the output writer

Parameters:

out - PrintWriter or Writer or OutputStream

startCaptureStdout

public static void startCaptureStdout()

redirects stdout towards output writer

stopCaptureStdout

public static void stopCaptureStdout()

stop redirecting stdout

startCaptureStderr

public static void startCaptureStderr()

redirects stderr towards the output writer

stopCaptureStderr

public static void stopCaptureStderr()

stops redirecting stderr

log2Stdout

public static void log2Stdout()

log to stdout

log2Stderr

public static void log2Stderr()

log to stderr

header

protected static java.lang.String header()

returns "Velosurf "

Returns:

return the header

flushAsyncLog

protected static void flushAsyncLog()

flush the asynchronous log in the output writer

isInitialized

public static boolean isInitialized()

queries the initialized state

dumpStack

public static void dumpStack()

dumps the current stack