05d4438383
This doesn't work right when used with -J yet, and there is some really ugly hand-crafting of part of the json output.
116 lines
3.5 KiB
Haskell
116 lines
3.5 KiB
Haskell
{- git-annex command
|
|
-
|
|
- Copyright 2010, 2013 Joey Hess <id@joeyh.name>
|
|
-
|
|
- Licensed under the GNU GPL version 3 or higher.
|
|
-}
|
|
|
|
module Command.Get where
|
|
|
|
import Command
|
|
import qualified Remote
|
|
import Annex.Content
|
|
import Annex.Transfer
|
|
import Annex.NumCopies
|
|
import Annex.Wanted
|
|
import qualified Command.Move
|
|
|
|
cmd :: Command
|
|
cmd = withGlobalOptions (jobsOption : jsonOption : jsonProgressOption : annexedMatchingOptions) $
|
|
command "get" SectionCommon
|
|
"make content of annexed files available"
|
|
paramPaths (seek <$$> optParser)
|
|
|
|
data GetOptions = GetOptions
|
|
{ getFiles :: CmdParams
|
|
, getFrom :: Maybe (DeferredParse Remote)
|
|
, autoMode :: Bool
|
|
, keyOptions :: Maybe KeyOptions
|
|
, batchOption :: BatchMode
|
|
}
|
|
|
|
optParser :: CmdParamsDesc -> Parser GetOptions
|
|
optParser desc = GetOptions
|
|
<$> cmdParams desc
|
|
<*> optional parseFromOption
|
|
<*> parseAutoOption
|
|
<*> optional (parseIncompleteOption <|> parseKeyOptions <|> parseFailedTransfersOption)
|
|
<*> parseBatchOption
|
|
|
|
seek :: GetOptions -> CommandSeek
|
|
seek o = allowConcurrentOutput $ do
|
|
from <- maybe (pure Nothing) (Just <$$> getParsed) (getFrom o)
|
|
let go = whenAnnexed $ start o from
|
|
case batchOption o of
|
|
Batch -> batchInput Right (batchCommandAction . go)
|
|
NoBatch -> withKeyOptions (keyOptions o) (autoMode o)
|
|
(startKeys from)
|
|
(withFilesInGit go)
|
|
(getFiles o)
|
|
|
|
start :: GetOptions -> Maybe Remote -> FilePath -> Key -> CommandStart
|
|
start o from file key = start' expensivecheck from key afile (mkActionItem afile)
|
|
where
|
|
afile = Just file
|
|
expensivecheck
|
|
| autoMode o = numCopiesCheck file key (<) <||> wantGet False (Just key) (Just file)
|
|
| otherwise = return True
|
|
|
|
startKeys :: Maybe Remote -> Key -> ActionItem -> CommandStart
|
|
startKeys from key ai = checkFailedTransferDirection ai Download $
|
|
start' (return True) from key Nothing ai
|
|
|
|
start' :: Annex Bool -> Maybe Remote -> Key -> AssociatedFile -> ActionItem -> CommandStart
|
|
start' expensivecheck from key afile ai = 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 ai
|
|
next a
|
|
|
|
perform :: Key -> AssociatedFile -> CommandPerform
|
|
perform key afile = stopUnless (getKey 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. -}
|
|
getKey :: Key -> AssociatedFile -> Annex Bool
|
|
getKey key afile = getKey' key afile =<< Remote.keyPossibilities key
|
|
|
|
getKey' :: Key -> AssociatedFile -> [Remote] -> Annex Bool
|
|
getKey' key afile = dispatch
|
|
where
|
|
dispatch [] = do
|
|
showNote "not available"
|
|
showlocs
|
|
return False
|
|
dispatch remotes = notifyTransfer Download afile $ \witness -> do
|
|
ok <- pickRemote remotes $ \r -> ifM (probablyPresent r)
|
|
( docopy r witness
|
|
, return False
|
|
)
|
|
if ok
|
|
then return ok
|
|
else do
|
|
Remote.showTriedRemotes remotes
|
|
showlocs
|
|
return False
|
|
showlocs = Remote.showLocations False 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 witness = getViaTmp (RemoteVerify r) key $ \dest ->
|
|
download (Remote.uuid r) key afile noRetry
|
|
(\p -> do
|
|
showAction $ "from " ++ Remote.name r
|
|
Remote.retrieveKeyFile r key afile dest p
|
|
) witness
|