bdec7fed9c
Adds a dependency on filepath-bytestring, an as yet unreleased fork of filepath that operates on RawFilePath. Git.Repo also changed to use RawFilePath for the path to the repo. This does eliminate some RawFilePath -> FilePath -> RawFilePath conversions. And filepath-bytestring's </> is probably faster. But I don't expect a major performance improvement from this. This is mostly groundwork for making Annex.Location use RawFilePath, which will allow for a conversion-free pipleline.
62 lines
1.7 KiB
Haskell
62 lines
1.7 KiB
Haskell
{- git-annex "WORM" backend -- Write Once, Read Many
|
|
-
|
|
- Copyright 2010 Joey Hess <id@joeyh.name>
|
|
-
|
|
- Licensed under the GNU AGPL version 3 or higher.
|
|
-}
|
|
|
|
module Backend.WORM (backends) where
|
|
|
|
import Annex.Common
|
|
import Types.Key
|
|
import Types.Backend
|
|
import Types.KeySource
|
|
import Backend.Utilities
|
|
import Git.FilePath
|
|
import Utility.Metered
|
|
|
|
import qualified Data.ByteString.Char8 as S8
|
|
|
|
backends :: [Backend]
|
|
backends = [backend]
|
|
|
|
backend :: Backend
|
|
backend = Backend
|
|
{ backendVariety = WORMKey
|
|
, getKey = keyValue
|
|
, verifyKeyContent = Nothing
|
|
, canUpgradeKey = Just needsUpgrade
|
|
, fastMigrate = Just removeSpaces
|
|
, isStableKey = const True
|
|
}
|
|
|
|
{- The key includes the file size, modification time, and the
|
|
- original filename relative to the top of the git repository.
|
|
-}
|
|
keyValue :: KeySource -> MeterUpdate -> Annex (Maybe Key)
|
|
keyValue source _ = do
|
|
let f = contentLocation source
|
|
stat <- liftIO $ getFileStatus f
|
|
sz <- liftIO $ getFileSize' f stat
|
|
relf <- fromRawFilePath . getTopFilePath
|
|
<$> inRepo (toTopFilePath $ toRawFilePath $ keyFilename source)
|
|
return $ Just $ mkKey $ \k -> k
|
|
{ keyName = genKeyName relf
|
|
, keyVariety = WORMKey
|
|
, keySize = Just sz
|
|
, keyMtime = Just $ modificationTime stat
|
|
}
|
|
|
|
{- Old WORM keys could contain spaces, and can be upgraded to remove them. -}
|
|
needsUpgrade :: Key -> Bool
|
|
needsUpgrade key = ' ' `S8.elem` fromKey keyName key
|
|
|
|
removeSpaces :: Key -> Backend -> AssociatedFile -> Annex (Maybe Key)
|
|
removeSpaces oldkey newbackend _
|
|
| migratable = return $ Just $ alterKey oldkey $ \d -> d
|
|
{ keyName = encodeBS $ reSanitizeKeyName $ decodeBS $ keyName d }
|
|
| otherwise = return Nothing
|
|
where
|
|
migratable = oldvariety == newvariety
|
|
oldvariety = fromKey keyVariety oldkey
|
|
newvariety = backendVariety newbackend
|