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-- | Functions defining zfs Properties.
--
-- Copyright 2016 Evan Cofsky <evan@theunixman.com>
-- License: BSD 2-clause
module Propellor.Property.ZFS.Properties (
zfsExists, zfsSetProperties
) where
import Propellor.Base
import Data.List (intercalate)
import qualified Propellor.Property.ZFS.Process as ZP
-- | Will ensure that a ZFS volume exists with the specified mount point.
-- This requires the pool to exist as well, but we don't create pools yet.
zfsExists :: ZFS -> Property NoInfo
zfsExists z =
let
(p, a) = ZP.zfsCommand "create" [Nothing] z
create = cmdProperty p a
in
check (not <$> ZP.zfsExists z) (create) `describe` (unwords ["Creating", zfsName z])
-- | Sets the given properties. Returns True if all were successfully changed, False if not.
zfsSetProperties :: ZFS -> ZFSProperties -> Property NoInfo
zfsSetProperties z setProperties =
let
spcmd :: String -> String -> (String, [String])
spcmd p v = ZP.zfsCommand "set" [Just (intercalate "=" [p, v]), Nothing] z
setprop :: (String, String) -> Property NoInfo
setprop (p, v) = check (ZP.zfsExists z) $ cmdProperty (fst (spcmd p v)) (snd (spcmd p v))
setall = combineProperties (unwords ["Setting properties on", zfsName z]) $
map setprop $ toPropertyList setProperties
in
setall `requires` zfsExists z
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