NAME

Wombat::Logger::LoggerBase - logger base class

SYNOPSIS

package My::Logger;

use base qw(Wombat::Logger::LoggerBase);

DESCRIPTION

Convenience base class for logger implementations. The only method that must be implemented is write(), plus any accessor methods required for configuration, and start() and stop() if resources must be initialized and cleaned up.

CONSTRUCTOR

new()

Construct and return a Wombat::Logger::LoggerBase instance, initializing fields appropriately. If subclasses override the constructor, they must be sure to call

$self->SUPER::new();

ACCESSOR METHODS

getContainer()

Return the Container with which this Logger is associated.

setContainer($container)

Set the Container with which this Logger is associated.

Parameters:

$container

the Container with which this Logger is associated

getLevel()

Return the verbosity level of this Logger.

setLevel($level)

Set the verbosity level of this Logger. Messages logged with a higher verbosity than this will be silently ignored.

Allowable values in increasing order are:

'FATAL'

'ERROR'

'WARNING'

'INFO'

'DEBUG'

The default level is 'ERROR'.

Parameters:

$level

the verbosity level, as a string

Throws:

Servlet::Util::IllegalArgumentException

if the specified log level is not one of the allowed values

PUBLIC METHODS

log($message, $exception, $level)

Send a message and/or an exception to the log destination. If a level is specified, the Logger must be set to a verbosity level greater than or equal to the specified level. If a level is not specified, the message and/or exception will be logged unconditionally.

Parameters:

$message

an optional string message to log

$exception

an optional exception to log in stack trace form

$level

an optional log level

write($string)

Write the specified string to the log destination. The default implementation does nothing. Subclasses must override this method.

Parameters:

$string

the string to write to the log destination

LIFECYCLE METHODS

start()

Prepare for the beginning of active use of this Logger. This method must be called before any of the public methods of the component are utilized. Subclasses should initialize logging resources with this method.

Throws:

Wombat::LifecycleException

if the Logger cannot be started

stop()

Gracefully terminate the active use of this Logger. This method must be the last called on a given instance of this component. Subclasses should release logging resources with this method.

Throws:

Wombat::LifecycleException

if the Logger cannot be stopped

SEE ALSO

Servlet::Util::Exception, Wombat::Exception

AUTHOR

Brian Moseley, bcm@maz.org