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{-# LANGUAGE ConstrainedClassMethods #-}
-- | Types for ZFS Properties.
--
-- Copyright 2016 Evan Cofsky <evan@theunixman.com>
-- License: BSD 2-clause
module Propellor.Types.ZFS where
import Propellor.Types.ConfigurableValue
import Utility.Split
import Data.String
import qualified Data.Set as Set
import Data.List
-- | A single ZFS filesystem.
data ZFS = ZFS ZPool ZDataset deriving (Show, Eq, Ord)
-- | Represents a zpool.
data ZPool = ZPool String deriving (Show, Eq, Ord)
-- | Represents a dataset in a zpool.
--
-- Can be constructed from a / separated string.
data ZDataset = ZDataset [String] deriving (Eq, Ord)
type ZFSProperties = Set.Set ZFSProperty
fromList :: [ZFSProperty] -> ZFSProperties
fromList = Set.fromList
toPropertyList :: ZFSProperties -> [(String, String)]
toPropertyList = Set.foldr (\p l -> l ++ [toPair p]) []
fromPropertyList :: [(String, String)] -> ZFSProperties
fromPropertyList props =
Set.fromList $ map fromPair props
zfsName :: ZFS -> String
zfsName (ZFS (ZPool pool) dataset) = intercalate "/" [pool, show dataset]
instance ConfigurableValue ZDataset where
val (ZDataset paths) = intercalate "/" paths
instance Show ZDataset where
show = val
instance IsString ZDataset where
fromString s = ZDataset $ splitc '/' s
instance IsString ZPool where
fromString p = ZPool p
class Value a where
toValue :: a -> String
fromValue :: (IsString a) => String -> a
fromValue = fromString
data ZFSYesNo = ZFSYesNo Bool deriving (Show, Eq, Ord)
data ZFSOnOff = ZFSOnOff Bool deriving (Show, Eq, Ord)
data ZFSSize = ZFSSize Integer deriving (Show, Eq, Ord)
data ZFSString = ZFSString String deriving (Show, Eq, Ord)
instance Value ZFSYesNo where
toValue (ZFSYesNo True) = "yes"
toValue (ZFSYesNo False) = "no"
instance Value ZFSOnOff where
toValue (ZFSOnOff True) = "on"
toValue (ZFSOnOff False) = "off"
instance Value ZFSSize where
toValue (ZFSSize s) = show s
instance Value ZFSString where
toValue (ZFSString s) = s
instance IsString ZFSString where
fromString = ZFSString
instance IsString ZFSYesNo where
fromString "yes" = ZFSYesNo True
fromString "no" = ZFSYesNo False
fromString _ = error "Not yes or no"
instance IsString ZFSOnOff where
fromString "on" = ZFSOnOff True
fromString "off" = ZFSOnOff False
fromString _ = error "Not on or off"
data ZFSACLInherit = AIDiscard | AINoAllow | AISecure | AIPassthrough deriving (Show, Eq, Ord)
instance IsString ZFSACLInherit where
fromString "discard" = AIDiscard
fromString "noallow" = AINoAllow
fromString "secure" = AISecure
fromString "passthrough" = AIPassthrough
fromString _ = error "Not valid aclpassthrough value"
instance Value ZFSACLInherit where
toValue AIDiscard = "discard"
toValue AINoAllow = "noallow"
toValue AISecure = "secure"
toValue AIPassthrough = "passthrough"
data ZFSACLMode = AMDiscard | AMGroupmask | AMPassthrough deriving (Show, Eq, Ord)
instance IsString ZFSACLMode where
fromString "discard" = AMDiscard
fromString "groupmask" = AMGroupmask
fromString "passthrough" = AMPassthrough
fromString _ = error "Invalid zfsaclmode"
instance Value ZFSACLMode where
toValue AMDiscard = "discard"
toValue AMGroupmask = "groupmask"
toValue AMPassthrough = "passthrough"
data ZFSProperty = Mounted ZFSYesNo
| Mountpoint ZFSString
| ReadOnly ZFSYesNo
| ACLInherit ZFSACLInherit
| ACLMode ZFSACLMode
| StringProperty String ZFSString
deriving (Show, Eq, Ord)
toPair :: ZFSProperty -> (String, String)
toPair (Mounted v) = ("mounted", toValue v)
toPair (Mountpoint v) = ("mountpoint", toValue v)
toPair (ReadOnly v) = ("readonly", toValue v)
toPair (ACLInherit v) = ("aclinherit", toValue v)
toPair (ACLMode v) = ("aclmode", toValue v)
toPair (StringProperty s v) = (s, toValue v)
fromPair :: (String, String) -> ZFSProperty
fromPair ("mounted", v) = Mounted (fromString v)
fromPair ("mountpoint", v) = Mountpoint (fromString v)
fromPair ("readonly", v) = ReadOnly (fromString v)
fromPair ("aclinherit", v) = ACLInherit (fromString v)
fromPair ("aclmode", v) = ACLMode (fromString v)
fromPair (s, v) = StringProperty s (fromString v)
|
