NAME

Router::Assemble - Fast, dumpable/restorable and weight adjustable routing engine for web applications

SYNOPSIS

use Router::Assemble;

my $router = Router::Assemble->new();
$router->add('/', 'dispatch_root');
$router->add('/entrylist', 'dispatch_entrylist');
$router->add('/:user', 'dispatch_user');
$router->add('/:user/{year}', 'dispatch_year');
$router->add('/:user/{year}/{month:\d+}', 'dispatch_month');
$router->add('/download/*', 'dispatch_download');

my $dest = $router->match($env->{PATH_INFO});

DESCRIPTION

Router::Assemble is yet another routing engine for web applications. This module is inspired by Router::Boom and powered by Regexp::Assemble.

Fast

This module is pretty fast, almost as fast as Router::Boom.

                     Rate Router::Assemble     Router::Boom
Router::Assemble 220553/s               --              -0%
Router::Boom     220554/s               0%               --

Dump and restore

my $router = Router::Assemble->new();
build_routes($router); # add routes for your application

# Get an instance of Router::Assemble::Matcher.
# This object holds the minimum information necessary for routing.
my $matcher = $router->matcher;
$matcher->match($env->{PATH_INFO});

# dump and restore
my $hash = $matcher->to_hash;                     # Dump as a hash object that can be expressed as JSON
my $m    = Router::Assemble::Matcher->new($hash); # Restore. This is very fast
$m->match($env->{PATH_INFO});

Weight adjustable

By default, Router::Assemble routes in order of addition.

my $router = Router::Assemble->new();
$router->add('/{category:\w+}', 'cat');
$router->add('/blog',           'blog_main');

$router->match('/blog') # cat

By using route_cmp, we can adjust routing order.

my $router = Router::Assemble->new(
    route_cmp => sub($$){
        my ($a, $b) = @_;
        # route to static route first
        $a->[0] =~ m/[\+\*]/ <=> $b->[0] =~ m/[\+\*]/;
    },
);
$router->add('/{category:\w+}', 'cat');
$router->add('/blog',           'blog_main');

$router->match('/blog') # blog_main

Compatibility with Router::Boom

Router::Assemble is compatible with Router::Boom about basic API.

MEHTODS

• my $router = Router::Assemble->new(%options)

  Create a new instance. %options may contains these values.

  • route_cmp

    A subroutine for comparing routes. this subroutine will be called at first arguments of "sort". The value to be compared is [$path, $context] pair of registered via "add".

• $router->add($path, $context)

  Add a route. $path accepts a string value. See the PATH DEFINITION section for details on how $path value is specified. $context accepts any value.

• my ($context, $captured) = $router->match($path);

  Attempt to find route that matches the given $path and return two values if a route is found. $context is a value of registered via "add". $captured is a hashref that contains placeholders given from $path.

  Return empty list if no route is found.

PATH DEFINITION

• {name:\w+}

  Accepts "\w+" in this component. And "name" will be used as a key in the $captured.

    $router->add('/user/{name:\w+}', 'profile');
    $router->match('/user/foo');
    # => ('profile', {name => 'foo'})
  

  You can use "(?:pattern)". (But you can not use "(pattern)")

    $router->add('/user/{name:(?:bar|baz)}', 'special_profile');
    $router->add('/user/{name:\w+}', 'profile');
    $router->match('/user/bar');
    # => ('special_profile', {name => 'bar'})
  

• :name and {name}

  Same as {name:[^/]+}.

    $router->add('/user/:name', 'profile');
    $router->match('/user/foo');
    # => ('profile', {name => 'foo'})
  

• *

  Same as {*:.+}.

    $router->add('/archive/*', 'archive');
    $router->match('/archive/path/to/files.zip');
    # => ('archive', {'*' => 'path/to/files.zip'})
  

LICENSE

Copyright (C) Six Apart Ltd. sixapart@cpan.org

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

AUTHOR

Taku AMANO usualoma@cpan.org

SEE ALSO

Router::Boom Pretty fast routing engine for web applications.

Regexp::Assemble Assemble multiple Regular Expressions into a single RE.