module Propellor.Property.Cron where
import Propellor
import qualified Propellor.Property.File as File
import qualified Propellor.Property.Apt as Apt
import Utility.SafeCommand
import Utility.FileMode
import Data.Char
type CronTimes = String
job :: Desc -> CronTimes -> UserName -> FilePath -> String -> Property
job desc times user cddir command = combineProperties ("cronned " ++ desc)
[ cronjobfile `File.hasContent`
[ "# Generated by propellor"
, ""
, "SHELL=/bin/sh"
, "PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin"
, ""
, times ++ "\t" ++ user ++ "\tchronic " ++ shellEscape scriptfile
]
, scriptfile `File.hasContent`
[ "#!/bin/sh"
, "# Generated by propellor"
, "set -e"
, "flock -n " ++ shellEscape cronjobfile
++ " sh -c " ++ shellEscape cmdline
]
, scriptfile `File.mode` combineModes (readModes ++ executeModes)
]
`requires` Apt.serviceInstalledRunning "cron"
`requires` Apt.installed ["util-linux", "moreutils"]
where
cmdline = "cd " ++ cddir ++ " && ( " ++ command ++ " )"
cronjobfile = "/etc/cron.d/" ++ name
scriptfile = "/usr/local/bin/" ++ name ++ "_cronjob"
name = map sanitize desc
sanitize c
| isAlphaNum c = c
| otherwise = '_'
niceJob :: Desc -> CronTimes -> UserName -> FilePath -> String -> Property
niceJob desc times user cddir command = job desc times user cddir
("nice ionice -c 3 sh -c " ++ shellEscape command)
runPropellor :: CronTimes -> Property
runPropellor times = niceJob "propellor" times "root" localdir "make"