Al Newkirk > Scrappy > Scrappy::Logger

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Module Version: 0.94112090   Source  

NAME ^

Scrappy::Logger - Scrappy Scraper Event Logging

VERSION ^

version 0.94112090

SYNOPSIS ^

    #!/usr/bin/perl
    use Scrappy::Logger;

    my  $logger = Scrappy::Logger->new;
    
        -f 'scraper.log' ?
        $logger->load('scraper.log');
        $logger->write('scraper.log');
        
        $logger->stash('foo' => 'bar');
        $logger->stash('abc' => [('a'..'z')]);

DESCRIPTION ^

Scrappy::Logger provides YAML-Based event-log handling for recording events encountered using the Scrappy framework.

ATTRIBUTES

The following is a list of object attributes available with every Scrappy::Logger instance.

auto_save

The auto_save attribute is a boolean that determines whether event data is automatically saved to the log file on update.

    my  $logger = Scrappy::Logger->new;
        
        $logger->load('scraper.log');
        
        # turn auto-saving off
        $logger->auto_save(0);
        $logger->event('...', 'yada yada yada');
        $logger->write; # explicit write

file

The file attribute gets/sets the filename of the current event-log file.

    my  $logger = Scrappy::Logger->new;
        
        $logger->load('scraper.log');
        $logger->write('scraper.log.bak');
        $logger->file('scraper.log');

verbose

The verbose attribute is a boolean that instructs the logger to write very detailed logs.

    my  $logger = Scrappy::Logger->new;
        $logger->verbose(1);

METHODS ^

load

The load method is used to read-in an event-log file, it returns its data in the structure it was saved-in.

    my  $logger = Scrappy::Logger->new;
    my  $data = $logger->load('scraper.log');

timestamp

The timestamp method returns the current date/timestamp in string form. When supplied a properly formatted date/timestamp this method returns a corresponding DateTime object.

    my  $logger = Scrappy::Logger->new;
    my  $date = $logger->timestamp;
    my  $dt = $logger->timestamp($date);

info

The info method is used to capture informational events and returns the event data.

    my  $logger = Scrappy::Logger->new;
    my  %data = (foo => 'bar', baz => 'xyz');
    my  $event = $logger->info('This is an informational message', %data);
    
        $logger->info('This is an informational message');

warn

The warn method is used to capture warning events and returns the event data.

    my  $logger = Scrappy::Logger->new;
    my  %data = (foo => 'bar', baz => 'xyz');
    my  $event = $logger->warn('This is a warning message', %data);
    
        $logger->info('This is an warning message');

error

The error method is used to capture error events and returns the event data.

    my  $logger = Scrappy::Logger->new;
    my  %data = (foo => 'bar', baz => 'xyz');
    my  $event = $logger->error('This is a n error message', %data);
    
        $logger->info('This is an error message');

event

The event method is used to capture custom events and returns the event data.

    my  $logger = Scrappy::Logger->new;
    my  %data = (foo => 'bar', baz => 'xyz');
    my  $event = $logger->event('myapp', 'This is a user-defined message', %data);
    
        $logger->event('myapp', 'This is a user-defined message');

write

The write method is used to write-out an event-log file.

    my  $logger = Scrappy::Logger->new;
    
        $logger->info('This is very cool', 'foo' => 'bar');
        $logger->warn('Somethin aint right here');
        $logger->error('It broke, I cant believe it broke');
    
        $logger->write('scraper.log');

AUTHOR ^

Al Newkirk <awncorp@cpan.org>

COPYRIGHT AND LICENSE ^

This software is copyright (c) 2010 by awncorp.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

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