48 lines
1.3 KiB
Haskell
48 lines
1.3 KiB
Haskell
{-# LANGUAGE PackageImports #-}
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module Propellor.Attr where
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import Propellor.Types
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import Propellor.Types.Attr
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import "mtl" Control.Monad.Reader
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import qualified Data.Set as S
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import qualified Data.Map as M
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pureAttrProperty :: Desc -> (Attr -> Attr) -> AttrProperty
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pureAttrProperty desc = AttrProperty $ Property ("has " ++ desc)
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(return NoChange)
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hostname :: HostName -> AttrProperty
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hostname name = pureAttrProperty ("hostname " ++ name) $
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\d -> d { _hostname = name }
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getHostName :: Propellor HostName
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getHostName = asks _hostname
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cname :: Domain -> AttrProperty
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cname domain = pureAttrProperty ("cname " ++ domain) (addCName domain)
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cnameFor :: IsProp p => Domain -> (Domain -> p) -> AttrProperty
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cnameFor domain mkp =
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let p = mkp domain
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in AttrProperty p (addCName domain)
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addCName :: HostName -> Attr -> Attr
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addCName domain d = d { _cnames = S.insert domain (_cnames d) }
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hostnameless :: Attr
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hostnameless = newAttr (error "hostname Attr not specified")
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hostAttr :: Host -> Attr
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hostAttr (Host _ mkattrs) = mkattrs hostnameless
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hostProperties :: Host -> [Property]
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hostProperties (Host ps _) = ps
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hostMap :: [Host] -> M.Map HostName Host
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hostMap l = M.fromList $ zip (map (_hostname . hostAttr) l) l
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findHost :: [Host] -> HostName -> Maybe Host
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findHost l hn = M.lookup hn (hostMap l)
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