ed684f651e
As yet unused. Backend.External could perhaps implement it too, although that would involve sending chunks of data to it via a pipe or something, so likely to be slow.
41 lines
922 B
Haskell
41 lines
922 B
Haskell
{- git-annex "URL" backend -- keys whose content is available from urls.
|
|
-
|
|
- Copyright 2011 Joey Hess <id@joeyh.name>
|
|
-
|
|
- Licensed under the GNU AGPL version 3 or higher.
|
|
-}
|
|
|
|
module Backend.URL (
|
|
backends,
|
|
fromUrl
|
|
) where
|
|
|
|
import Annex.Common
|
|
import Types.Key
|
|
import Types.Backend
|
|
import Backend.Utilities
|
|
|
|
backends :: [Backend]
|
|
backends = [backend]
|
|
|
|
backend :: Backend
|
|
backend = Backend
|
|
{ backendVariety = URLKey
|
|
, genKey = Nothing
|
|
, verifyKeyContent = Nothing
|
|
, verifyKeyContentIncrementally = Nothing
|
|
, canUpgradeKey = Nothing
|
|
, fastMigrate = Nothing
|
|
-- The content of an url can change at any time, so URL keys are
|
|
-- not stable.
|
|
, isStableKey = const False
|
|
, isCryptographicallySecure = const False
|
|
}
|
|
|
|
{- Every unique url has a corresponding key. -}
|
|
fromUrl :: String -> Maybe Integer -> Key
|
|
fromUrl url size = mkKey $ \k -> k
|
|
{ keyName = genKeyName url
|
|
, keyVariety = URLKey
|
|
, keySize = size
|
|
}
|