NAME
   Tatsumaki - Non-blocking web framework based on Plack and AnyEvent

SYNOPSIS
     ### app.psgi
     use Tatsumaki::Error;
     use Tatsumaki::Application;
     use Tatsumaki::HTTPClient;
     use Tatsumaki::Server;

     package MainHandler;
     use parent qw(Tatsumaki::Handler);

     sub get {
         my $self = shift;
         $self->write("Hello World");
     }

     package FeedHandler;
     use parent qw(Tatsumaki::Handler);
     __PACKAGE__->asynchronous(1);

     use JSON;

     sub get {
         my($self, $query) = @_;
         my $client = Tatsumaki::HTTPClient->new;
         $client->get("http://friendfeed-api.com/v2/feed/$query", $self->async_cb(sub { $self->on_response(@_) }));
     }

     sub on_response {
         my($self, $res) = @_;
         if ($res->is_error) {
             Tatsumaki::Error::HTTP->throw(500);
         }
         my $json = JSON::decode_json($res->content);
         $self->write("Fetched " . scalar(@{$json->{entries}}) . " entries from API");
         $self->finish;
     }

     package StreamWriter;
     use parent qw(Tatsumaki::Handler);
     __PACKAGE__->asynchronous(1);

     use AnyEvent;

     sub get {
         my $self = shift;
         $self->response->content_type('text/plain');

         my $try = 0;
         my $t; $t = AE::timer 0, 0.1, sub {
             $self->stream_write("Current UNIX time is " . time . "\n");
             if ($try++ >= 10) {
                 undef $t;
                 $self->finish;
             }
         };
     }

     package main;

     my $app = Tatsumaki::Application->new([
         '/stream' => 'StreamWriter',
         '/feed/(\w+)' => 'FeedHandler',
         '/' => 'MainHandler',
     ]);
     return $app->psgi_app;

   And now run it with:

     plackup -s Twiggy app.psgi

WARNINGS
   This is considered as alpha quality software. Most of the stuff are
   undocumented since it's considered unstable and will likely to change.
   You should sometimes look at the source code or example apps in *eg*
   directory to see how this thing works.

   Feel free to hack on it and ask me if you have questions or suggestions
   at IRC: #plack on irc.perl.org.

DESCRIPTION
   Tatsumaki is a toy port of Tornado for Perl using Plack (with
   non-blocking extensions) and AnyEvent.

   It allows you to write a web application that does a immediate response
   with template rendering, IO-bound delayed response (like fetching third
   party API or XML feeds), server push streaming and long-poll Comet in a
   clean unified API.

PSGI COMPATIBILITY
   When "asynchronous" is declared in your application, you need a PSGI
   server backend that supports "psgi.streaming" response style. If your
   application does server push with "stream_write", you need a server that
   supports "psgi.nonblocking" (and "psgi.streaming") as well.

   Currently Tatsumaki asynchronous application is supposed to run on
   Twiggy, Feersum, Corona and POE::Component::Server::PSGI.

   If "asynchronous" is not used, your application is supposed to run in
   any PSGI standard environments, including blocking multiprocess
   environments like Starman or Starlet.

TATSUMAKI?
   Tatsumaki is a Japanese for Tornado. Also, it might sound familiar from
   "Tatsumaki Senpuukyaku" of Ryu from Street Fighter II if you loved the
   Capcom videogame back in the day :)

AUTHOR
   Tatsuhiko Miyagawa <[email protected]>

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

SEE ALSO
   AnyEvent Plack PSGI