34 lines
912 B
Haskell
34 lines
912 B
Haskell
{- git-annex key/value backend data type
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-
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- Most things should not need this, using Types instead
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-
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- Copyright 2010,2012 Joey Hess <joey@kitenet.net>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Types.Backend where
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import Types.Key
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{- The source used to generate a key. The location of the content
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- may be different from the filename associated with the key. -}
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data KeySource = KeySource
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{ keyFilename :: FilePath
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, contentLocation :: FilePath
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}
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data BackendA a = Backend {
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-- name of this backend
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name :: String,
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-- gets the key to use for a given content
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getKey :: KeySource -> a (Maybe Key),
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-- called during fsck to check a key, if the backend has its own checks
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fsckKey :: Maybe (Key -> FilePath -> a Bool)
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}
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instance Show (BackendA a) where
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show backend = "Backend { name =\"" ++ name backend ++ "\" }"
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instance Eq (BackendA a) where
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a == b = name a == name b
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