89b2542d3c
Added annex.skipunknown git config, that can be set to false to change the behavior of commands like `git annex get foo*`, to not skip over files/dirs that are not checked into git and are explicitly listed in the command line. Significant complexity was needed to handle git-annex add, which uses some git ls-files calls, but needs to not use --error-unmatch because of course the files are not known to git. annex.skipunknown is planned to change to default to false in a git-annex release in early 2022. There's a todo for that.
118 lines
3.8 KiB
Haskell
118 lines
3.8 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 AGPL version 3 or higher.
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-}
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module Command.Get where
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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 = withGlobalOptions [jobsOption, jsonOptions, jsonProgressOption, annexedMatchingOptions] $
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command "get" SectionCommon
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"make content of annexed files available"
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paramPaths (seek <$$> optParser)
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data GetOptions = GetOptions
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{ getFiles :: CmdParams
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, getFrom :: Maybe (DeferredParse Remote)
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, autoMode :: Bool
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, keyOptions :: Maybe KeyOptions
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, batchOption :: BatchMode
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}
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optParser :: CmdParamsDesc -> Parser GetOptions
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optParser desc = GetOptions
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<$> cmdParams desc
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<*> optional (parseRemoteOption <$> parseFromOption)
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<*> parseAutoOption
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<*> optional (parseIncompleteOption <|> parseKeyOptions <|> parseFailedTransfersOption)
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<*> parseBatchOption
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seek :: GetOptions -> CommandSeek
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seek o = startConcurrency downloadStages $ do
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from <- maybe (pure Nothing) (Just <$$> getParsed) (getFrom o)
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let go = whenAnnexed $ start o from
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case batchOption o of
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Batch fmt -> batchFilesMatching fmt (go . toRawFilePath)
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NoBatch -> withKeyOptions (keyOptions o) (autoMode o)
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(commandAction . startKeys from)
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(withFilesInGit ww (commandAction . go))
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=<< workTreeItems ww (getFiles o)
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where
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ww = WarnUnmatchLsFiles
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start :: GetOptions -> Maybe Remote -> RawFilePath -> Key -> CommandStart
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start o from file key = start' expensivecheck from key afile ai
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where
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afile = AssociatedFile (Just file)
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ai = mkActionItem (key, afile)
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expensivecheck
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| autoMode o = numCopiesCheck (fromRawFilePath file) key (<)
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<||> wantGet False (Just key) afile
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| otherwise = return True
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startKeys :: Maybe Remote -> (Key, ActionItem) -> CommandStart
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startKeys from (key, ai) = checkFailedTransferDirection ai Download $
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start' (return True) from key (AssociatedFile Nothing) ai
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start' :: Annex Bool -> Maybe Remote -> Key -> AssociatedFile -> ActionItem -> CommandStart
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start' expensivecheck from key afile ai =
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stopUnless (not <$> inAnnex key) $ 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 Command.Move.RemoveNever key afile
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where
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go = starting "get" (OnlyActionOn key ai)
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perform :: Key -> AssociatedFile -> CommandPerform
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perform key afile = stopUnless (getKey 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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getKey :: Key -> AssociatedFile -> Annex Bool
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getKey key afile = getKey' key afile =<< Remote.keyPossibilities key
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getKey' :: Key -> AssociatedFile -> [Remote] -> Annex Bool
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getKey' key afile = 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 $ \witness -> do
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ok <- pickRemote remotes $ \r -> ifM (probablyPresent r)
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( docopy r witness
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, return False
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)
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if ok
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then return ok
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else do
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Remote.showTriedRemotes remotes
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showlocs
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return False
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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 witness = getViaTmp (Remote.retrievalSecurityPolicy r) (RemoteVerify r) key $ \dest ->
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download (Remote.uuid r) key afile stdRetry
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(\p -> do
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showAction $ "from " ++ Remote.name r
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Remote.verifiedAction (Remote.retrieveKeyFile r key afile dest p)
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) witness
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