Launcher-Cascade

This module provides a framework to launch processes, test whether they succeeded or not and report on that. Each process is modeled as an object and can depend on other processes to start, i.e., a process will not be started until all the processes it depends upon have successfully been started.

Process launchers must be implemented as Launcher::Cascade::Base objects (or subclassses thereof). Their launch() method will actually launch the process, and their test() method will check whether it succeeded or not. Each launcher can be made to depend on one or more other launchers: it will then refuse to launch() until the others have been test()ed successfully.

All the launchers should be given to a Launcher::Cascade::Container, which will run them in turn and test their status when applicable, until either all of the Launchers have succeeded or one of them has failed.

The distribution provides Launcher::Cascade::FileReader to ease the launching of external (and possibly remote, by means of ssh) commands and the reading of files. FileReaders should be used in launch() or test() methods of launchers.

INSTALLATION

To install this module, run the following commands:

perl Makefile.PL
make
make test
make install

Alternatively, to install with Module::Build, you can use the following commands:

perl Build.PL
./Build
./Build test
./Build install

SUPPORT AND DOCUMENTATION

After installing, you can find documentation for this module with the perldoc command.

perldoc Launcher::Cascade
perldoc Launcher::Cascade::Base

You can also look for information at:

Search CPAN

http://search.cpan.org/dist/Launcher-Cascade

CPAN Request Tracker:

http://rt.cpan.org/NoAuth/Bugs.html?Dist=Launcher-Cascade

AnnoCPAN, annotated CPAN documentation:

http://annocpan.org/dist/Launcher-Cascade

CPAN Ratings:

http://cpanratings.perl.org/d/Launcher-Cascade

COPYRIGHT AND LICENCE

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