Zoffix Znet

NAME

POE::Component::WWW::DoingItWrongCom::RandImage - non-blocking way to get URIs to random images from http://www.doingitwrong.com

SYNOPSIS

    use strict;
    use warnings;
    use POE qw(Component::WWW::DoingItWrongCom::RandImage);

    POE::Component::WWW::DoingItWrongCom::RandImage->spawn(
        alias => 'wrong',
    );

    POE::Session->create(
        package_states => [
            main => [ qw( _start  got_pic ) ],
        ],
    );

    $poe_kernel->run;

    sub _start {
        $_[KERNEL]->post( wrong => fetch => { event => 'got_pic' } );
    }

    sub got_pic {
        my ( $kernel, $input ) = @_[ KERNEL, ARG0 ];

        if ( $input->{error} ) {
            print "ERROR: $input->{error}\n";
        }
        else {
            print "You are doing it wrong: $input->{out}\n";
        }

        $kernel->post( wrong => 'shutdown' );
    }

DESCRIPTION

The module is a non-blocking wrapper around WWW::DoingItWrongCom::RandImage which fetches a URI for a random image from http://www.doingitwrong.com

CONSTRUCTOR

spawn

    my $poco = POE::Component::WWW::DoingItWrongCom::RandImage->spawn;

    POE::Component::WWW::DoingItWrongCom::RandImage->spawn(
        alias => 'wrong',
    );

    POE::Component::WWW::DoingItWrongCom::RandImage->spawn(
        alias => 'wrong',
        ua_args => {
            timeout => 30, # that's the default
            agent   => 'WrongAgent',
            # the rest of LWP::UserAgent options can go here.
        },
        options => {
            debug => 1,
            trace => 1,
            # POE::Session arguments for the component
        },
        debug => 1, # output some debug info
    );

The spawn method returns a POE::Component::WWW::DoingItWrongCom::RandImage object and takes several aruments all of which are optional. The possible arguments are as follows:

alias

    POE::Component::WWW::DoingItWrongCom::RandImage->spawn(
        alias => 'calc'
    );

Optional. Specifies a POE Kernel alias for the component.

ua_args

    my $poco = POE::Component::WWW::DoingItWrongCom::RandImage->spawn(
        ua_args => {
            timeout => 30, # that's the default
            agent   => 'WrongAgent',
            # the rest of LWP::UserAgent options can go here.
        },
    );

Optional. The ua_args argument takes a hashref as a value which will be passed to LWP::UserAgent object constructor. See LWP::UseAgent documentation for possible keys/values. By default the default LWP::UserAgent's constructor will be used except for timeout which, unless specified by you, will default to 30 seconds.

options

    my $poco = POE::Component::WWW::DoingItWrongCom::RandImage->spawn(
        options => {
            trace => 1,
            default => 1,
        },
    );

A hashref of POE Session options to pass to the component's session.

debug

    my $poco = POE::Component::WWW::DoingItWrongCom::RandImage->spawn(
        debug => 1
    );

When set to a true value turns on output of debug messages. Defaults to: 0.

METHODS

These are the object-oriented methods of the components.

fetch

    $poco->fetch( { event => 'got_pic' } );

    $poco->fetch( {
            event         => 'got_pic',
            session       => 'other_session',
            _user_defined => 'something_random',
            _random       => 'moar_randomness',
        }
    );

Takes hashref of options. See fetch event below for description.

session_id

    my $poco_id = $poco->session_id;

Takes no arguments. Returns component's session ID.

shutdown

    $poco->shutdown;

Takes no arguments. Shuts down the component.

ACEPTED EVENTS

fetch

    $poe_kernel->post( wrong => fetch => {
            event         => 'got_pic',
            session       => 'other_session',
            _user_defined => 'something_random',
            _random       => 'moar_randomness',
        }
    );

Instructs the component to fetch a URI to a random image from http://www.doingitwrong.com. Takes one argument which is a hashref of options with keys/values as follows:

event

    { event => 'got_pic' }

Mandatory. An event to send the result to.

session

    { session => $some_other_session_ref }

    { session => 'some_alias' }

    { session => $session->ID }

Optional. An alternative session alias, reference or ID that the response should be sent to, defaults to sending session.

user defined

Optional. Any keys starting with _ (underscore) will not affect the component and will be passed back in the result intact.

shutdown

    $poe_kernel->post( wrong => 'shutdown' );

Takes no arguments. Tells the component to shut itself down.

OUTPUT

 $VAR1 = {
    'out' => bless( do{\(my $o = 'http://www.doingitwrong.com/wrong/20070527-113810.jpg')}, 'URI::http' ),
    '_num' => 4
 };

The event handler set up to handle the event, the name of which you've specified in the event parameter of the fetch() event/method will recieve the results of the request from fetch. They will be passed in a form of a hashref in ARG0. The possible keys will be as follows:

out

 {
    'out' => bless( do{\(my $o = 'http://www.doingitwrong.com/wrong/20070527-113810.jpg')}, 'URI::http' ),
 }

If no errors occured, the out key will be present and the value will be a URI object for the URI of the random image from http://www.doingitwrong.com.

error

    { 'error' => '500: Request timed out' }

If some sort of an error occured during the request, the error key will be present and will contain the description of an error.

user defined

    { '_num' => 4 }

Any arguments beginning with _ (underscore) passed into the fetch event/method will be present intact in the result.

SEE ALSO

POE, LWP::UserAgent, URI, WWW::DoingItWrongCom::RandImage

PREREQUISITES

For healthy life this module requires the following modules/versions:

    'Carp'                            => 1.04,
    'POE'                             => 0.9999,
    'POE::Filter::Reference'          => 1.2187,
    'POE::Filter::Line'               => 1.1920,
    'POE::Wheel::Run'                 => 1.2179,
    'WWW::DoingItWrongCom::RandImage' => 0.01,

The module might work with older versions but that wasn't tested.

AUTHOR

Zoffix Znet, <zoffix at cpan.org>

BUGS

Please report any bugs or feature requests to bug-poe-component-www-doingitwrongcom-randimage at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=POE-Component-WWW-DoingItWrongCom-RandImage. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

SUPPORT

You can find documentation for this module with the perldoc command.

    perldoc POE::Component::WWW::DoingItWrongCom::RandImage

You can also look for information at:

COPYRIGHT & LICENSE

Copyright 2008 Zoffix Znet, all rights reserved.

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