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|
{- git-annex chunked remotes
-
- Copyright 2012-2014 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Remote.Helper.Chunked
( ChunkSize
, ChunkConfig(..)
, chunkConfig
, meteredWriteFileChunks
) where
import Common.Annex
import Utility.DataUnits
import Types.Remote
import Logs.Chunk.Pure (ChunkSize)
import Utility.Metered
import qualified Data.ByteString.Lazy as L
import qualified Data.Map as M
data ChunkConfig
= NoChunks
| UnpaddedChunks ChunkSize
| LegacyChunks ChunkSize
chunkConfig :: RemoteConfig -> ChunkConfig
chunkConfig m =
case M.lookup "chunksize" m of
Nothing -> case M.lookup "chunk" m of
Nothing -> NoChunks
Just v -> UnpaddedChunks $ readsz v "chunk"
Just v -> LegacyChunks $ readsz v "chunksize"
where
readsz v f = case readSize dataUnits v of
Just size | size > 0 -> fromInteger size
_ -> error ("bad " ++ f)
{- Writes a series of chunks to a file. The feeder is called to get
- each chunk. -}
meteredWriteFileChunks :: MeterUpdate -> FilePath -> [v] -> (v -> IO L.ByteString) -> IO ()
meteredWriteFileChunks meterupdate dest chunks feeder =
withBinaryFile dest WriteMode $ \h ->
forM_ chunks $
meteredWrite meterupdate h <=< feeder
|
