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+{- Copyright 2016 Joey Hess <id@joeyh.name>
+ -
+ - Licensed under the GNU AGPL version 3 or higher.
+ -}
+
+module Storage where
+
+import Types
+
+data Storage = Storage
+	{ storeShard :: StorableObjectIdent -> Shard -> IO StoreResult
+	, retrieveShard :: ShardNum -> StorableObjectIdent -> IO RetrieveResult
+	}
+
+data StoreResult = StoreSuccess | StoreFailure String
+
+data RetrieveResult = RetrieveSuccess Shard | RetrieveFailure String