99a8a5297c
* get/copy --auto: Transfer data even if it would exceed numcopies, when preferred content settings want it. * drop --auto: Fix dropping content when there are no preferred content settings.
73 lines
2.1 KiB
Haskell
73 lines
2.1 KiB
Haskell
{- git-annex command
|
|
-
|
|
- Copyright 2010 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 qualified Command.Move
|
|
import Logs.Transfer
|
|
import Annex.Wanted
|
|
|
|
def :: [Command]
|
|
def = [withOptions [Command.Move.fromOption] $ command "get" paramPaths seek
|
|
"make content of annexed files available"]
|
|
|
|
seek :: [CommandSeek]
|
|
seek = [withField Command.Move.fromOption Remote.byName $ \from ->
|
|
withFilesInGit $ whenAnnexed $ start from]
|
|
|
|
start :: Maybe Remote -> FilePath -> (Key, Backend) -> CommandStart
|
|
start from file (key, _) = stopUnless (not <$> inAnnex key) $
|
|
stopUnless (checkAuto (numCopiesCheck file key (<) <||> wantGet False (Just file))) $ do
|
|
case from of
|
|
Nothing -> go $ perform key file
|
|
Just src ->
|
|
-- get --from = copy --from
|
|
stopUnless (Command.Move.fromOk src key) $
|
|
go $ Command.Move.fromPerform src False key file
|
|
where
|
|
go a = do
|
|
showStart "get" file
|
|
next a
|
|
|
|
perform :: Key -> FilePath -> CommandPerform
|
|
perform key file = stopUnless (getViaTmp key $ getKeyFile key file) $
|
|
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 -> FilePath -> FilePath -> Annex Bool
|
|
getKeyFile key file dest = dispatch =<< Remote.keyPossibilities key
|
|
where
|
|
dispatch [] = do
|
|
showNote "not available"
|
|
Remote.showLocations key []
|
|
return False
|
|
dispatch remotes = trycopy remotes remotes
|
|
trycopy full [] = do
|
|
Remote.showTriedRemotes full
|
|
Remote.showLocations key []
|
|
return False
|
|
trycopy full (r:rs) =
|
|
ifM (probablyPresent r)
|
|
( docopy r (trycopy full rs)
|
|
, trycopy full rs
|
|
)
|
|
-- 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 continue = do
|
|
ok <- download (Remote.uuid r) key (Just file) noRetry $ do
|
|
showAction $ "from " ++ Remote.name r
|
|
Remote.retrieveKeyFile r key (Just file) dest
|
|
if ok then return ok else continue
|