NAME

POE::Component::WWW::Google::Time - non-blocking wrapper around WWW::Google::Time

SYNOPSIS

            

              
              
use strict;
use warnings;
use POE qw/Component::WWW::Google::Time/;
my $poco = POE::Component::WWW::Google::Time->spawn;
POE::Session->create( package_states => [ main => [qw(_start results)] ], );
$poe_kernel->run;
sub _start {
    $poco->get_time({ event => 'results', where => 'Toronto' });
}
sub results {
    my $data = $_[ARG0];
    if ( $data->{error} ) {
        print "Error: $data->{error}\n";
    }
    else {
        printf "It is %s, %s (%s) in %s\n",
            @{ $data->{result} }{ qw/day_of_week  time  time_zone  where/ };
    }
    $poco->shutdown;
}
            
          

Using event based interface is also possible of course.

DESCRIPTION

The module is a non-blocking wrapper around WWW::Google::Time which provides interface to fetch time data for various locations from Google.

CONSTRUCTOR

spawn

            

              
              
my $poco = POE::Component::WWW::Google::Time->spawn;
POE::Component::WWW::Google::Time->spawn(
    alias => 'google_time',
    ua      => LWP::UserAgent->new( ua => "Mozilla" ),
    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::Google::Time object. It takes a few arguments, all of which are optional. The possible arguments are as follows:

alias

            

              
              
->spawn( alias => 'google_time' );
            
          

Optional. Specifies a POE Kernel alias for the component.

ua

            

              
              
->spawn( ua => LWP::UserAgent->new( agent => "Mozilla" );
            
          

Optional. Same as the ua argument in WWW::Google::Time constructor. Note that Google blocks LWP::UserAgent's default "User-Agent" header.

options

            

              
              
->spawn(
    options => {
        trace => 1,
        default => 1,
    },
);
            
          

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

debug

            

              
              
->spawn(
    debug => 1
);
            
          

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

METHODS

get_time

            

              
              
$poco->get_time( {
        event       => 'event_for_output',
        where       => 'Toronto',
        _blah       => 'pooh!',
        session     => 'other',
    }
);
            
          

Takes a hashref as an argument, does not return a sensible return value. See get_time event's description for more information.

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.

ACCEPTED EVENTS

get_time

            

              
              
$poe_kernel->post( google_time => get_time => {
        event       => 'event_for_output',
        where       => 'Toronto',
        _blah       => 'pooh!',
        session     => 'other',
    }
);
            
          

Instructs the component to fetch time data from Google. Takes a hashref as an argument, the possible keys/value of that hashref are as follows:

event

            

              
              
{ event => 'results_event', }
            
          

Mandatory. Specifies the name of the event to emit when results are ready. See OUTPUT section for more information.

where

            

              
              
{ where => 'Toronto' }
            
          

Mandatory. Specifies the place for which to fetch the time data.

session

            

              
              
{ session => 'other' }
{ session => $other_session_reference }
{ session => $other_session_ID }
            
          

Optional. Takes either an alias, reference or an ID of an alternative session to send output to.

user defined

            

              
              
{
    _user    => 'random',
    _another => 'more',
}
            
          

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

shutdown

            

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

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

OUTPUT

            

              
              
$VAR1 = {
    'where' => 'Toronto',
    'result' => {
        'time' => '11:06pm',
        'day_of_week' => 'Saturday',
        'time_zone' => 'EDT',
        'where' => 'Toronto, Ontario'
    },
    '_blah' => 'foos',
};
$VAR1 = {
    'error' => 'Could not find time data for that location',
    'where' => 'Nonexistant',
    '_blah' => 'foos',
};
            
          

The event handler set up to handle the event which you've specified in the event argument to get_time() method/event will recieve input in the $_[ARG0] in a form of a hashref. The possible keys/value of that hashref are as follows:

where

            

              
              
{ where => 'Toronto' }
            
          

The where key will contain the same value as what you passed in where argument to the get_time() event/method.

error

            

              
              
{ 'error' => 'Could not find time data for that location' }
            
          

The error key will be present if a network error occured or Google doesn't know about the location you passed as where argument to the get_time() method/event.

result

            

              
              
'result' => {
    'time' => '11:06pm',
    'day_of_week' => 'Saturday',
    'time_zone' => 'EDT',
    'where' => 'Toronto, Ontario'
},
            
          

The result key (upon success, that is when error key is not present) will contain the same hashref as returned by the WWW::Google::Time's get_time() method. See documentation for WWW::Google::Time for more information.

user defined

            

              
              
{ '_blah' => 'foos' }
            
          

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

SEE ALSO

POE, WWW::Google::Time

AUTHOR

Zoffix Znet, <zoffix at cpan.org> (http://zoffix.com/, http://haslayout.net/, http://zofdesign.com/)

BUGS

Please report any bugs or feature requests to bug-poe-component-www-google-time at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=POE-Component-WWW-Google-Time. 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::Google::Time
            
          

You can also look for information at:

• RT: CPAN's request tracker

  http://rt.cpan.org/NoAuth/Bugs.html?Dist=POE-Component-WWW-Google-Time

• AnnoCPAN: Annotated CPAN documentation

  http://annocpan.org/dist/POE-Component-WWW-Google-Time

• CPAN Ratings

  http://cpanratings.perl.org/d/POE-Component-WWW-Google-Time

• Search CPAN

  http://search.cpan.org/dist/POE-Component-WWW-Google-Time

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.

cpanm POE::Component::WWW::Google::Time

perl -MCPAN -e shell
install POE::Component::WWW::Google::Time