e880d0d22c
Only fsck and reinject and the test suite used the Backend, and they can look it up as needed from the Key. This simplifies the code and also speeds it up. There is a small behavior change here. Before, all commands would warn when acting on an annexed file with an unknown backend. Now, only fsck and reinject show that warning.
92 lines
2.8 KiB
Haskell
92 lines
2.8 KiB
Haskell
{- git-annex command
|
|
-
|
|
- Copyright 2010, 2013 Joey Hess <joey@kitenet.net>
|
|
-
|
|
- Licensed under the GNU GPL version 3 or higher.
|
|
-}
|
|
|
|
module Command.Get where
|
|
|
|
import Common.Annex
|
|
import Command
|
|
import qualified Remote
|
|
import Annex.Content
|
|
import Annex.Transfer
|
|
import Config.NumCopies
|
|
import Annex.Wanted
|
|
import qualified Command.Move
|
|
|
|
def :: [Command]
|
|
def = [withOptions getOptions $ command "get" paramPaths seek
|
|
SectionCommon "make content of annexed files available"]
|
|
|
|
getOptions :: [Option]
|
|
getOptions = fromOption : keyOptions
|
|
|
|
seek :: CommandSeek
|
|
seek ps = do
|
|
from <- getOptionField fromOption Remote.byNameWithUUID
|
|
withKeyOptions
|
|
(startKeys from)
|
|
(withFilesInGit $ whenAnnexed $ start from)
|
|
ps
|
|
|
|
start :: Maybe Remote -> FilePath -> Key -> CommandStart
|
|
start from file key = start' expensivecheck from key (Just file)
|
|
where
|
|
expensivecheck = checkAuto (numCopiesCheck file key (<) <||> wantGet False (Just key) (Just file))
|
|
|
|
startKeys :: Maybe Remote -> Key -> CommandStart
|
|
startKeys from key = start' (return True) from key Nothing
|
|
|
|
start' :: Annex Bool -> Maybe Remote -> Key -> AssociatedFile -> CommandStart
|
|
start' expensivecheck from key afile = stopUnless (not <$> inAnnex key) $
|
|
stopUnless expensivecheck $
|
|
case from of
|
|
Nothing -> go $ perform key afile
|
|
Just src ->
|
|
stopUnless (Command.Move.fromOk src key) $
|
|
go $ Command.Move.fromPerform src False key afile
|
|
where
|
|
go a = do
|
|
showStart' "get" key afile
|
|
next a
|
|
|
|
perform :: Key -> AssociatedFile -> CommandPerform
|
|
perform key afile = stopUnless (getViaTmp key $ getKeyFile key afile) $
|
|
next $ return True -- no cleanup needed
|
|
|
|
{- Try to find a copy of the file in one of the remotes,
|
|
- and copy it to here. -}
|
|
getKeyFile :: Key -> AssociatedFile -> FilePath -> Annex Bool
|
|
getKeyFile key afile dest = getKeyFile' key afile dest
|
|
=<< Remote.keyPossibilities key
|
|
|
|
getKeyFile' :: Key -> AssociatedFile -> FilePath -> [Remote] -> Annex Bool
|
|
getKeyFile' key afile dest = dispatch
|
|
where
|
|
dispatch [] = do
|
|
showNote "not available"
|
|
showlocs
|
|
return False
|
|
dispatch remotes = notifyTransfer Download afile $ trycopy remotes remotes
|
|
trycopy full [] _ = do
|
|
Remote.showTriedRemotes full
|
|
showlocs
|
|
return False
|
|
trycopy full (r:rs) witness =
|
|
ifM (probablyPresent r)
|
|
( docopy r witness <||> trycopy full rs witness
|
|
, trycopy full rs witness
|
|
)
|
|
showlocs = Remote.showLocations key []
|
|
"No other repository is known to contain the file."
|
|
-- This check is to avoid an ugly message if a remote is a
|
|
-- drive that is not mounted.
|
|
probablyPresent r
|
|
| Remote.hasKeyCheap r =
|
|
either (const False) id <$> Remote.hasKey r key
|
|
| otherwise = return True
|
|
docopy r = download (Remote.uuid r) key afile noRetry $ \p -> do
|
|
showAction $ "from " ++ Remote.name r
|
|
Remote.retrieveKeyFile r key afile dest p
|