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.
private static MailNotifier	notifier
private static int	notifLevel
private static boolean	notify
(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	enableNotifications(boolean enable)
static void	error(java.lang.String s) logs an error string.
static void	fatal(java.lang.String s) logs a fatal error string.
private static void	flushAsyncLog() flush the asynchronous log in the output writer.
static int	getLogLevel() Gets the current log level.
static int	getNotificationLevel()
static boolean	getNotifierEnabled()
static java.io.PrintWriter	getWriter() get the output writer.
private 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.
private 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	log2File(java.lang.String file) log to file.
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	setNotificationLevel(int level)
static void	setNotificationParams(java.lang.String host, java.lang.String sender, java.lang.String recipient)
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

notifier

private static MailNotifier notifier

notifLevel

private static int notifLevel

notify

private static boolean notify

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.

Parameters:

timestamps -

getLogLevel

public static int getLogLevel()

Gets the current log level.

Returns:

the current log level

log

private 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.

log2File

public static void log2File(java.lang.String file)
                     throws java.io.FileNotFoundException,
                            java.io.IOException

log to file.

Throws:

java.io.FileNotFoundException

java.io.IOException

header

private static java.lang.String header()

returns "Velosurf ".

Returns:

return the header

flushAsyncLog

private 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.

setNotificationParams

public static void setNotificationParams(java.lang.String host,
                                         java.lang.String sender,
                                         java.lang.String recipient)

setNotificationLevel

public static void setNotificationLevel(int level)

getNotificationLevel

public static int getNotificationLevel()

enableNotifications

public static void enableNotifications(boolean enable)

getNotifierEnabled

public static boolean getNotifierEnabled()