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

Field Summary

static int	DEBUG_ID Prefix for debug messages.
static int	ERROR_ID Prefix for error messages.
static int	INFO_ID Prefix for info messages.
(package private) static int	lines
static int	mLogLevel Current log level
private static int	sAsyncLimit max number of lines to log in asynchronous mode
(package private) static java.io.StringWriter	sAsyncLog asynchronous log used at start
private static boolean	sCaptureStderr whether the logger captures stderr
private static boolean	sCaptureStdout whether the logger captures stdout
(package private) static java.text.SimpleDateFormat	sFormat date format for timestamps
(package private) static java.io.PrintWriter	sLog log output printwriter
(package private) static java.io.PrintStream	sOldStderr stderr old value
(package private) static java.io.PrintStream	sOldStdout stdout old value
static int	TRACE_ID Prefix for trace messages.
static int	WARN_ID Prefix for warning messages.

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
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 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	setLogLevel(int inLogLevel) 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

Prefix for trace messages.

See Also:

Constant Field Values

DEBUG_ID

public static final int DEBUG_ID

Prefix for debug messages.

See Also:

Constant Field Values

INFO_ID

public static final int INFO_ID

Prefix for info messages.

See Also:

Constant Field Values

WARN_ID

public static final int WARN_ID

Prefix for warning messages.

See Also:

Constant Field Values

ERROR_ID

public static final int ERROR_ID

Prefix for error messages.

See Also:

Constant Field Values

mLogLevel

public static int mLogLevel

Current log level

sCaptureStdout

private static boolean sCaptureStdout

whether the logger captures stdout

sCaptureStderr

private static boolean sCaptureStderr

whether the logger captures stderr

sAsyncLimit

private static int sAsyncLimit

max number of lines to log in asynchronous mode

sFormat

static java.text.SimpleDateFormat sFormat

date format for timestamps

sAsyncLog

static java.io.StringWriter sAsyncLog

asynchronous log used at start

sLog

static java.io.PrintWriter sLog

log output printwriter

sOldStdout

static java.io.PrintStream sOldStdout

stdout old value

sOldStderr

static java.io.PrintStream sOldStderr

stderr old value

lines

static int lines

Constructor Detail

Logger

public Logger()

Method Detail

setLogLevel

public static void setLogLevel(int inLogLevel)

Sets the log level

Parameters:

inLogLevel - log level

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

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

dumpStack

public static void dumpStack()

dumps the current stack