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module Propellor.Property.Cmd (
cmdProperty,
cmdProperty',
scriptProperty
) where
import Control.Applicative
import Data.List
import Propellor.Types
import Utility.Monad
import Utility.SafeCommand
import Utility.Env
-- | A property that can be satisfied by running a command.
--
-- The command must exit 0 on success.
cmdProperty :: String -> [String] -> Property
cmdProperty cmd params = cmdProperty' cmd params []
-- | A property that can be satisfied by running a command,
-- with added environment.
cmdProperty' :: String -> [String] -> [(String, String)] -> Property
cmdProperty' cmd params env = Property desc $ do
env' <- addEntries env <$> getEnvironment
ifM (boolSystemEnv cmd (map Param params) (Just env'))
( return MadeChange
, return FailedChange
)
where
desc = unwords $ cmd : params
-- | A property that can be satisfied by running a series of shell commands.
scriptProperty :: [String] -> Property
scriptProperty script = cmdProperty "sh" ["-c", shellcmd]
where
shellcmd = intercalate " ; " ("set -e" : script)
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