The cron package

[Tags:library, mit]

Cron data structure and Attoparsec parser. The idea is to embed it in larger systems which want to roll their own scheduled tasks in a format that people are used to. System.Cron is where all the interesting datatypes live. You will also find scheduleMatches, which you can use to compare a time against a CronSchedule to see if an action needs to be performed. System.Cron.Parser is where you will find the parsers cronSchedule, crontabEntry and cronTab. To parse individual schedules up to full crontab files.


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Properties

Versions 0.1.0, 0.1.1, 0.1.2, 0.2.0, 0.2.1, 0.2.2, 0.2.3, 0.2.4, 0.2.5, 0.2.6, 0.3.0, 0.3.1, 0.3.2, 0.4.0, 0.4.1, 0.4.1.1, 0.4.1.2
Change log changelog
Dependencies attoparsec (>=0.10), base (==4.*), mtl (>=2.0.1), mtl-compat (>=0.2.1), old-locale (>=1.0), semigroups, text (>=0.11 && <2), time (>=1.4) [details]
License MIT
Copyright Copyright: (c) 2012-2014 Michael Xavier
Author Michael Xavier <michael@michaelxavier.net>
Maintainer Michael Xavier <michael@michaelxavier.net>
Stability experimental
Category Text, Parsing, System
Home page http://github.com/michaelxavier/cron
Bug tracker http://github.com/michaelxavier/cron/issues
Source repository head: git clone https://github.com/michaelxavier/cron
Uploaded Tue Jun 21 23:20:00 UTC 2016 by MichaelXavier
Distributions LTSHaskell:0.4.1.2, NixOS:0.4.1.2, Stackage:0.4.1.2, Tumbleweed:0.4.1.2
Downloads 2637 total (53 in the last 30 days)
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Status Docs uploaded by user
Build status unknown [no reports yet]

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Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info

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For package maintainers and hackage trustees

Readme for cron

Readme for cron-0.4.1.2

cron

Build Status

Cron data structure and Attoparsec parser for Haskell. The idea is to embed it in larger systems which want to roll their own scheduled tasks in a format that people are used to.

System.Cron is where all the interesting datatypes live. You will also find scheduleMatches, which you can use to compare a time against a CronSchedule to see if an action needs to be performed. System.Cron.Parser is where you will find the parsers cronSchedule, crontabEntry and cronTab. To parse individual schedules up to full crontab files.

To do anything, you'll need to install cabal-dev with cabal.

To build, run:

make

To run tests, run:

make test

If you have inotify-tools, run this to run tests continuously.

make autotest

To generate docs:

make docs

Scheduler

Cron offers a scheduling monad which can be found in System.Cron.Schedule. This monad transform allows you to declare a set of jobs (of the type IO ()) that will be executed at intervals defined by cron strings.

main :: IO ()
main = do
    ...
    tids <- execSchedule $ do
        addJob job1 "* * * * *"
        addJob job2 "0 * * * *"
    print tids
    ...

job1 :: IO ()
job1 = putStrLn "Job 1"

job2 :: IO ()
job2 = putStrLn "Job 2"

Contributors