NAME
    Catmandu::Plack::unAPI - unAPI webservice based on Catmandu

DESCRIPTION
    Catmandu::Plack::unAPI implements an unAPI web service as PSGI
    application.

SYNOPSIS
    Set up an "app.psgi" for instance to get data via arXiv identifier:

        use Catmandu::Plack::unAPI;
        use Catmandu::Importer::ArXiv;

        Catmandu::Plack::unAPI->new(
            query => sub {
                my ($id) = @_;
                Catmandu::Importer::ArXiv->new( id => $id )->first;
            }
        )->to_app;

    Start the application, e.g. with "plackup app.psgi" and query via unAPI:

        curl localhost:5000/
        curl 'localhost:5000/?id=1204.0492&format=json'

CONFIGURATION
    query
        Code reference with a query method to get an item (as reference) by
        a given identifier (HTTP request parameter "id"). If the method
        returns undef, the application returns HTTP 404. If the methods
        returns a scalar, it is used as error message for HTTP response 400
        (Bad Request).

    formats
        Hash reference with format names mapped to MIME type,
        Catmandu::Exporter configuration and (optional) documentation for
        each format. By default only JSON and YAML are configured as
        following:

            json => {
                type     => 'application/json',
                exporter => [ 'JSON', pretty => 1 ],
                docs     => 'http://json.org/'
            },
            yaml => {
                type     => 'text/yaml',
                exporter => [ 'YAML' ],
                docs     => 'http://en.wikipedia.org/wiki/YAML'
            }

LIMITATIONS
    An exporter is instanciated for each request, so performance may be low
    depending on configuration.

    The error response is always "text/plain", this may be configurable in a
    future release.

    Timeouts are not implemented yet.

AUTHOR
    Jakob Voß <jakob.voss@gbv.de>

COPYRIGHT AND LICENSE
    Copyright 2014- Jakob Voß

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

SEE ALSO
    <http://unapi.info/>
    Catmandu::Plack::REST

