NAME
    CPAN::Metrics - Create and maintain a Perl::Metrics database for all of
    CPAN

SYNOPSIS
      # Prepare a CPAN::Metrics run
      my $metrics = CPAN::Metrics->new(
          remote  => 'ftp://cpan.pair.com/pub/CPAN/',
          local   => '/home/adam/.minicpan',
          extract => '/home/adam/explosion',
          metrics => '/var/cache/perl/cpan_metrics.sqlite',
          );
  
      # Launch the run
      $metrics->run;

DESCRIPTION
    "CPAN::Metrics" is a combination of CPAN::Mini and Perl::Metrics.

    In short, it lets you pull out all of CPAN (for various definitions of
    "all") and run Perl::Metrics on it to generate massive amounts of
    metrics data on the 16,000,000 lines of code in CPAN.

  Resource Usage
    While it might make it relatively easy to write the code to "process all
    of CPAN", make no mistake that it's going to take you LOT of computing
    resources to do it. And especially so the first time.

    To do a single run should require 1-10 gigabytes of disk space, up to
    several hundred megabytes of memory, and hours (or days) of CPU time.

    The result will be a SQLite database containing somewhere between
    several hundred thousand and several million rows of metrics data.

    What you do with the metrics after that is up to you.

METHODS
new
    The "new" constructor creates a new CPAN metrics processor.

    Although it is created as an object, due to Perl::Metrics you can only
    create a single object within a single process. (I think)

    It takes a variety of different parameters.

    minicpan args

    Returns a new "CPAN::Metrics" object, or dies on error.

  run
    The "run" method launches the CPAN metrics processor. It will syncronize
    its minicpan mirror from the remote server, expanding any new archives,
    and removing old ones. Once updated, the directory will be reindexed at
    update it in the metricsdatabase, and any required processing done to
    add the resulting metrics needed.

    And then (a "very" long time later) it will stop. :)

    Oh, and return true. Any errors will cause an exception (i.e. die)

TO DO
    - Improve Perl::Metrics to add needed things

    - Improve CPAN::Metrics::Extract to add needed things

    - Improve CPAN::Metrics to add needed things

    - Get all three of the above to use accessors

    - Possibly consider intentionally disabling caching so that we don't end
    up with a multi-multi-gigabyte parse cache.

SUPPORT
    Bugs should be reported via the CPAN bug tracker at

    <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=CPAN-Metrics>

    For other issues, contact the author.

AUTHOR
    Adam Kennedy <cpan@ali.as>, <http://ali.as/>

COPYRIGHT
    Copyright 2005 Adam Kennedy. All rights reserved.

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

    The full text of the license can be found in the LICENSE file included
    with this module.