61ccf95004
Only the assistant uses these, and only the assistant cleans them up, so make only git annex transferkeys write them, There is one behavior change from this. If glacier is being used, and a manual git annex get --from glacier fails because the file isn't available yet, the assistant will no longer later see that failed transfer file and retry the get. Hope no-one depended on that old behavior.
95 lines
2.9 KiB
Haskell
95 lines
2.9 KiB
Haskell
{- git-annex command
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-
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- Copyright 2010, 2013 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Command.Get where
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import Common.Annex
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import Command
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import qualified Remote
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import Annex.Content
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import Annex.Transfer
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import Annex.NumCopies
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import Annex.Wanted
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import qualified Command.Move
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cmd :: [Command]
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cmd = [withOptions getOptions $ command "get" paramPaths seek
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SectionCommon "make content of annexed files available"]
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getOptions :: [Option]
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getOptions = fromOption : autoOption : jobsOption : annexedMatchingOptions ++ keyOptions
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seek :: CommandSeek
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seek ps = do
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from <- getOptionField fromOption Remote.byNameWithUUID
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auto <- getOptionFlag autoOption
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withKeyOptions auto
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(startKeys from)
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(withFilesInGit $ whenAnnexed $ start auto from)
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ps
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start :: Bool -> Maybe Remote -> FilePath -> Key -> CommandStart
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start auto from file key = start' expensivecheck from key (Just file)
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where
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expensivecheck
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| auto = numCopiesCheck file key (<) <||> wantGet False (Just key) (Just file)
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| otherwise = return True
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startKeys :: Maybe Remote -> Key -> CommandStart
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startKeys from key = start' (return True) from key Nothing
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start' :: Annex Bool -> Maybe Remote -> Key -> AssociatedFile -> CommandStart
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start' expensivecheck from key afile = stopUnless (not <$> inAnnex key) $
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stopUnless expensivecheck $
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case from of
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Nothing -> go $ perform key afile
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Just src ->
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stopUnless (Command.Move.fromOk src key) $
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go $ Command.Move.fromPerform src False key afile
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where
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go a = do
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showStart' "get" key afile
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next a
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perform :: Key -> AssociatedFile -> CommandPerform
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perform key afile = stopUnless (getViaTmp key $ getKeyFile key afile) $
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next $ return True -- no cleanup needed
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{- Try to find a copy of the file in one of the remotes,
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- and copy it to here. -}
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getKeyFile :: Key -> AssociatedFile -> FilePath -> Annex Bool
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getKeyFile key afile dest = getKeyFile' key afile dest
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=<< Remote.keyPossibilities key
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getKeyFile' :: Key -> AssociatedFile -> FilePath -> [Remote] -> Annex Bool
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getKeyFile' key afile dest = dispatch
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where
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dispatch [] = do
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showNote "not available"
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showlocs
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return False
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dispatch remotes = notifyTransfer Download afile $ trycopy remotes remotes
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trycopy full [] _ = do
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Remote.showTriedRemotes full
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showlocs
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return False
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trycopy full (r:rs) witness =
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ifM (probablyPresent r)
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( docopy r witness <||> trycopy full rs witness
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, trycopy full rs witness
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)
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showlocs = Remote.showLocations False key []
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"No other repository is known to contain the file."
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-- This check is to avoid an ugly message if a remote is a
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-- drive that is not mounted.
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probablyPresent r
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| Remote.hasKeyCheap r =
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either (const False) id <$> Remote.hasKey r key
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| otherwise = return True
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docopy r = download (Remote.uuid r) key afile noRetry noObserver $ \p -> do
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showAction $ "from " ++ Remote.name r
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Remote.retrieveKeyFile r key afile dest p
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