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-rw-r--r--Propellor/Types/Attr.hs36
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+module Propellor.Types.Attr where
+
+import qualified Data.Set as S
+
+-- | The attributes of a host. For example, its hostname.
+data Attr = Attr
+ { _hostname :: HostName
+ , _cnames :: S.Set Domain
+
+ , _dockerImage :: Maybe String
+ , _dockerRunParams :: [HostName -> String]
+ }
+
+instance Eq Attr where
+ x == y = and
+ [ _hostname x == _hostname y
+ , _cnames x == _cnames y
+
+ , _dockerImage x == _dockerImage y
+ , let simpl v = map (\a -> a "") (_dockerRunParams v)
+ in simpl x == simpl y
+ ]
+
+instance Show Attr where
+ show a = unlines
+ [ "hostname " ++ _hostname a
+ , "cnames " ++ show (_cnames a)
+ , "docker image " ++ show (_dockerImage a)
+ , "docker run params " ++ show (map (\mk -> mk "") (_dockerRunParams a))
+ ]
+
+newAttr :: HostName -> Attr
+newAttr hn = Attr hn S.empty Nothing []
+
+type HostName = String
+type Domain = String