Twitter

This recipe shows how to add tweets to your repository that occur whenever a new item is deposited.

Installation

Install LWP::Authen::OAuth and LWP::Protocol::https

Set up a new Twitter account for your repository if not already done so.

Sign into your Twitter account on [1] and then click "Register an app". Fill in the form:

• Name: enter your repository URL
• Description: enter anything
• Home page: enter your repository URL
• Organization: enter anything
• Application Type: Client
• Default Access Type: Read & Write

In your repository add to a new configuration file in cfg.d/ (e.g. twitter.pl), substituting the values given below:

• Change oauth_consumer_key and oauth_consumer_secret to the values found on the Twitter application page.
• Change oauth_token and oauth_token_secret to the values found on the "My Access Token" page linked from the Twitter application page.

use LWP::Authen::OAuth;

$c->{twitter}->{authen} = {
        oauth_consumer_key => 'c2nOQSd2asDF9nhqFKCWg',
        oauth_consumer_secret => '9hz7hoNIpk29slqtJ46yOg7HXAqOPrETnueNGrTXu4',
        oauth_token => '15203291-1qVbfWHh9Sa8sjdkmqyP8eB9XyxhouZhPnRrKnwQj',
        oauth_token_secret => 'SZmj2zKsVGrEpPDDaZBrE92ksLwf0oBJ8X4medYoX8',
};

$c->{eprint_status_change} = sub
{
        my( $eprint, $old_status, $new_status ) = @_;

        if( $new_status eq "archive" )
        {
                my $ua = LWP::UserAgent->new;
                my $url = URI->new( 'http://is.gd/api.php' );
                $url->query_form(
                        longurl => $eprint->get_url
                );
                my $shorturl = $ua->get( $url )->content;
                my $title = $eprint->get_value( "title" );
                {
                        use bytes;
                        $title =~ s/^(.{0,100})/$1/;
                }
                my $tweet = "$title - $shorturl";

                my $oua = LWP::Authen::OAuth->new(
                        %{$eprint->{session}->config( "twitter", "authen" )},
                );
                my $r = $oua->post( 'https://api.twitter.com/1.1/statuses/update.json', [
                        status => $tweet,
                ] );
                if( $r->is_error )
                {
                        $eprint->{session}->log( "Tweet failed: ".$r->as_string );
                }
        }

};

• Restart Apache ( /etc/init.d/apache2 force-reload , or similar)
• Log in and deposit an item to test

Examples

• http://twitter.com/eprintsecs - ECS EPrints, Southampton