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App-TrimHistories-0.006
River stage one • 1 direct dependent • 1 total dependent
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/ App::TrimHistories

NAME

App::TrimHistories - Keep only a certain number of sets of file histories, delete the rest

VERSION

This document describes version 0.006 of App::TrimHistories (from Perl distribution App-TrimHistories), released on 2019-11-29.

SYNOPSIS

See the included script trim-histories.

FUNCTIONS

trim_histories

Usage:

 trim_histories(%args) -> [status, msg, payload, meta]

Keep only a certain number of sets of file histories, delete the rest.

This script can be used to delete old backup or log files. The files must be named with timestamps, e.g. mydb-2017-06-14.sql.gz. By default, it keeps only 7 daily, 4 weekly, and 6 monthly histories. The rest will be deleted.

This function is not exported.

This function supports dry-run operation.

Arguments ('*' denotes required arguments):

  • discard_old_histories => bool

  • discard_young_histories => bool

  • files* => array[filename]

    Each file name must be unique and contain date, e.g. `backup-2017-06-14.tar.gz`.

  • sets => array[str] (default: ["daily",7,"weekly",4,"monthly",6])

    History sets to keep.

    Expressed as a list of (period, num-to-keep) pairs. Period can be number of seconds or either hourly, daily, weekly, monthly, yearly. The default is:

     ['daily', 7, 'weekly', 4, 'monthly', 6]

    which means to keep 7 daily, 4 weekly, and 6 monthly histories. It is equivalent to:

     [86400, 7, 7*86400, 4, 30*86400, 6]

Special arguments:

  • -dry_run => bool

    Pass -dry_run=>1 to enable simulation mode.

Returns an enveloped result (an array).

First element (status) is an integer containing HTTP status code (200 means OK, 4xx caller error, 5xx function error). Second element (msg) is a string containing error message, or 'OK' if status is 200. Third element (payload) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information.

Return value: (any)

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/App-TrimHistories.

SOURCE

Source repository is at https://github.com/perlancar/perl-App-TrimHistories.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=App-TrimHistories

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.

AUTHOR

perlancar <perlancar@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2019, 2017 by perlancar@cpan.org.

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