py-direg

Simple utility for regulating directories (eg. deleting old files when a certain size is reached)

Usage

Usage:
    direg.py (-h|--help)
    direg.py [--config=<config>] [-v...] [--log=<log>]

Regulates directories based on configuration file

Options:
    --config=<config>  Path to config [default: ~/.direg.py].
    -v                 verbosity level -v, -vv, -vvv

Example Configuration

directories = [

        {
            'path' : '~/podcasts/program',
            'test': 'max_count',
            'max_count':100
        },

        {
            'path' : '~/podcasts/science/*',
            'test': 'max_size',
            'max_size': '100GB'
        }

    ]

Configuration Options

Configuration should define a list of dictionaries called directories. Each dictionary is a directory specification. The specification must consist of the following keys:

path: the path to the directory. "~" is expanded to user directory. If wildcards are are used, globbing will expand to each path, and the remainder of the specification is used for each path.
test: the test to use. Should be callable. Will be called with the DiregDirectory object as the single parameter. Can also be a string referring to one of the predefined tests. The test should return True if action needs to be taken (if the solution should be called).
solution: the solution to use. Should be callable. Will be called with the DiregDirectory object as the single parameter. Can also be a string referring to one of the predefined solutions.
Additional Parameters: If additional parameters are reqquired by the solution or test, they should also be included (eg. max_size, max_count). The entirety of the specification is available ad the spec property of the DiregDirectory object that is created from the specificaiton.

Predefined Strategies

There are a few predefined test and solution strategies which can be used by passing a string as the test or solution key in the directory specification. Be sure to also include the required additional parameters as well.

Predefined Tests

max_size

The max_size test can be used by passing max_size as the test value and including a max_size key that specifies the maximum size that directory is allowed to be. The max_Size parameter is parsed by humanfriendly, so string like "100GB" should work fine. This test returns true if the directory is larger than the given size (eg. the solution is triggeres).

max_count

The max_count test can be used by passing max_count as the test value and including a max_count key that specifies the maximum number of files allowed in the directory.

is_after

The is_after test checks if today is after the date provided by the directory spec key expiry. Date should be formatted as 'YYYY-MM-DD HH:MM:SS'. Can also be a callable.

is_day_of_week

The is_day_of_week test checks if the current day of week is specified in the directory spec dow entry. Days are specified as integers 0-6 where 0 is Monday, and 6 is Sunday. This can be a single integer, a list, or tuple, or a string of numbers to specify multiple days.

always

The always test always returns true, so it always triggers the solution.

never

The never test always returns false, so it never triggers the solution.

Predefined Solutions

remove_old

The remove_old solution is the default solution, and is used if nothing else is specified. It can also be explicitly declared by passing remove_old as the solution value. It simply removes the oldest file in the directory until the directory test no longer returns true. Be sure that it is used in conjunction with an appropriate test.

remove_older_than

The remove_older_than solution removes files older than the specified time delta in the direcry spec cutoff key. The cuttoff may be a number of seconds old, or a datetime.timedelta.

send_email

not implemented yet.

procobain/py-direg