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MooseX::Runnable - Tag a class as a runnable application


version 0.10


Create a class, tag it runnable, and provide a run method:

    package App::HelloWorld;
    use feature 'say';
    use Moose;

    with 'MooseX::Runnable';

    sub run {
       my ($self,$name) = @_;
       say "Hello, $name.";
       return 0; # success

Then you can run this class as an application with the included mx-run script:

    $ mx-run App::HelloWorld jrockway
    Hello, jrockway.

MooseX::Runnable supports MooseX::Getopt, and other similar systems (and is extensible, in case you have written such a system).


MooseX::Runnable is a framework for making classes runnable applications. This role doesn't do anything other than tell the rest of the framework that your class is a runnable application that has a run method which accepts arguments and returns the process' exit code.

This is a convention that the community has been using for a while. This role tells the computer that your class uses this convention, and let's the computer abstract away some of the tedium this entails.



Your class must implement run. It accepts the command-line args (that were not consumed by another parser, if applicable) and returns an integer representing the UNIX exit value. return 0 means success.



This is a script that accepts a MooseX::Runnable class and tries to run it, using MooseX::Runnable::Run.

The syntax is:

  mx-run Class::Name

  mx-run <args for mx-run> -- Class::Name <args for Class::Name>

for example:

  mx-run -Ilib App::HelloWorld --args --go --here


  mx-run -Ilib +Persistent --port 8080 -- App::HelloWorld --args --go --here


If you don't want to invoke your app with mx-run, you can write a custom version using MooseX::Runnable::Run.


MX::Runnable is designed to be extensible; users can run plugins from the command-line, and application developers can add roles to their class to control behavior.

For example, if you consume MooseX::Getopt, the command-line will be parsed with MooseX::Getopt. Any recognized args will be used to instantiate your class, and any extra args will be passed to run.


Many of the plugins shipped are unstable; they may go away, change, break, etc. If there is no documentation for a plugin, it is probably just a prototype.


Bugs may be submitted through the RT bug tracker (or

There is also a mailing list available for users of this distribution, at

There is also an irc channel available for users of this distribution, at #moose on


Jonathan Rockway <>


  • Jonathan Rockway <>

  • Karen Etheridge <>

  • Doug Bell <>

  • Duke Leto <>


This software is copyright (c) 2009 by Jonathan Rockway.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.