SYNOPSIS
my $logger = Log::Pony->new(
log_level => $ENV{MYAPP_LOG_LEVEL} || 'info',
);
$logger->info("Payed by her");
$logger->warn("A unexpected things happend!");
$logger->critical("Ouch! Disk full!");
$logger->debug("Through here...");
DESCRIPTION
Log::Pony is simple logger class.
THIS IS A DEVELOPMENT RELEASE. API MAY CHANGE WITHOUT NOTICE.
Log::Pony provides
Flexible logging level
Flexible output
MOTIVATION
I need a simple, flexible, OO-ish, customizable, and thin logger class,
but I can't find any module on CPAN.
METHODS
my $logger = Log::Pony->new(%args)
Create new Log::Pony instance.
Mandatory parameter for this method is log_level. You can on specify
the log level by constructor.
Optionaly, you can pass color parameter. It enables colorize for
default "$logger->process" method. You can access this parameters
value by "$logger->color()".
And other parameters passed to "$logger->init(%args)" method.
my $level = $logger->log_level() : Str
Get a current log level in string.
$logger->color() : Bool
Returns color parameter passed at constructor.
$logger->log($level, $format, @args);
This method format log message by sprintf by $format and @args.
And output log by "$logger->process($level, $message)".
$logger->debug(@msg)
Shorthand for "$logger->log('DEBUG', @msg)".
$logger->info(@msg)
Shorthand for "$logger->log('INFO', @msg)".
$logger->warn(@msg)
Shorthand for "$logger->log('WARN', @msg)".
$logger->critical(@msg)
Shorthand for "$logger->log('CRITICAL', @msg)".
EXTEND THIS CLASS
You can extend this class by inheritance.
Hook "$logger->init(%args)"
You can hook "$logger->init(%args)".
This method is a hook point to extend your logger class. Default
implementation of this method does no operation.
Here is an example code:
pckage My::Logger;
use parent qw/Log::Pony/;
sub init {
my ($self, %args) = @_;
my $rotate_logs = File::RotateLogs->new(
%args
);
$self->{rotate_logs} = $rotate_logs;
}
sub process {
my ($self, $level, $message) = @_;
$self->{rotate_logs}->print($message);
}
Log::Pony pass arguments without 'log_level' to "$logger->init". You
can setup your logger class at this hook point.
"$logger->process($level, $message)"
The method to output log message to any device. You can output,
e-mailing, send to syslog, or string to DB at this point.
Default implementation is here:
sub process {
my ($self, $level, $message) = @_;
my $time = $self->time();
my $trace = $self->trace_info();
print STDERR "$time [$level] $message $trace\n";
}
You can call following methods to get information:
$self->time()
Get a current time in localtime in following format;
2004-04-01T12:00:00
$self->trace_info()
Get a trace information in following format:
at my/script.pl line 15
You can add this trace information folloing log message, then
you can debug more easily.
$self->colorize($level: Str, $message: Str) : Str
Colorize your message for readability.
$level is string indicates level name. $message is string to
colorize.
*Return value*: Colorized $message.
CUSTOMIZING LOGGING LEVELS
You can customize logging level by following methods.
You need to inherit from Log::Pony to customize logging level.
MyLogger->set_levels(@levels);
MyLogger->set_levels(qw/debug info warn crit emergency/);
You can set levels by this method.
You need pass the levels as first is whatever thing, last is
important.
This methods non existent method automatically. In this case, you
can call "$logger->emergency($msg)" method after this definition.
