311 lines
10 KiB
Haskell
311 lines
10 KiB
Haskell
{- git-annex command
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-
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- Copyright 2012-2019 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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{-# LANGUAGE ApplicativeDo #-}
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module Command.Import where
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import Command
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import qualified Git
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import qualified Annex
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import qualified Command.Add
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import qualified Command.Reinject
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import qualified Types.Remote as Remote
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import qualified Git.Ref
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import Utility.CopyFile
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import Backend
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import Types.KeySource
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import Annex.CheckIgnore
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import Annex.NumCopies
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import Annex.FileMatcher
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import Annex.Ingest
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import Annex.InodeSentinal
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import Annex.Import
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import Annex.RemoteTrackingBranch
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import Utility.InodeCache
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import Logs.Location
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import Git.FilePath
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import Git.Types
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import Git.Branch
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import Types.Import
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cmd :: Command
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cmd = notBareRepo $
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withGlobalOptions [jobsOption, jsonOptions, fileMatchingOptions] $
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command "import" SectionCommon
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"import files from elsewhere into the repository"
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(paramPaths ++ "|BRANCH[:SUBDIR]")
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(seek <$$> optParser)
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data ImportOptions
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= LocalImportOptions
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{ importFiles :: CmdParams
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, duplicateMode :: DuplicateMode
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}
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| RemoteImportOptions
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{ importFromRemote :: DeferredParse Remote
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, importToBranch :: Branch
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, importToSubDir :: Maybe FilePath
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}
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optParser :: CmdParamsDesc -> Parser ImportOptions
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optParser desc = do
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ps <- cmdParams desc
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mfromremote <- optional $ parseRemoteOption <$> parseFromOption
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dupmode <- fromMaybe Default <$> optional duplicateModeParser
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return $ case mfromremote of
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Nothing -> LocalImportOptions ps dupmode
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Just r -> case ps of
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[bs] ->
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let (branch, subdir) = separate (== ':') bs
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in RemoteImportOptions r
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(Ref branch)
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(if null subdir then Nothing else Just subdir)
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_ -> giveup "expected BRANCH[:SUBDIR]"
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data DuplicateMode = Default | Duplicate | DeDuplicate | CleanDuplicates | SkipDuplicates | ReinjectDuplicates
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deriving (Eq)
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duplicateModeParser :: Parser DuplicateMode
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duplicateModeParser =
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flag' Duplicate
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( long "duplicate"
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<> help "do not delete source files"
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)
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<|> flag' DeDuplicate
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( long "deduplicate"
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<> help "delete source files whose content was imported before"
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)
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<|> flag' CleanDuplicates
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( long "clean-duplicates"
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<> help "delete duplicate source files (import nothing)"
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)
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<|> flag' SkipDuplicates
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( long "skip-duplicates"
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<> help "import only new files (do not delete source files)"
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)
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<|> flag' ReinjectDuplicates
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( long "reinject-duplicates"
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<> help "import new files, and reinject the content of files that were imported before"
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)
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seek :: ImportOptions -> CommandSeek
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seek o@(LocalImportOptions {}) = allowConcurrentOutput $ do
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repopath <- liftIO . absPath =<< fromRepo Git.repoPath
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inrepops <- liftIO $ filter (dirContains repopath) <$> mapM absPath (importFiles o)
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unless (null inrepops) $ do
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giveup $ "cannot import files from inside the working tree (use git annex add instead): " ++ unwords inrepops
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largematcher <- largeFilesMatcher
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(commandAction . startLocal largematcher (duplicateMode o))
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`withPathContents` importFiles o
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seek o@(RemoteImportOptions {}) = allowConcurrentOutput $ do
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r <- getParsed (importFromRemote o)
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unlessM (Remote.isImportSupported r) $
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giveup "That remote does not support imports."
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subdir <- maybe
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(pure Nothing)
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(Just <$$> inRepo . toTopFilePath)
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(importToSubDir o)
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seekRemote r (importToBranch o) subdir
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startLocal :: GetFileMatcher -> DuplicateMode -> (FilePath, FilePath) -> CommandStart
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startLocal largematcher mode (srcfile, destfile) =
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ifM (liftIO $ isRegularFile <$> getSymbolicLinkStatus srcfile)
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( do
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showStart "import" destfile
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next pickaction
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, stop
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)
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where
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deletedup k = do
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showNote $ "duplicate of " ++ serializeKey k
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verifyExisting k destfile
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( do
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liftIO $ removeFile srcfile
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next $ return True
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, do
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warning "Could not verify that the content is still present in the annex; not removing from the import location."
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stop
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)
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reinject k = do
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showNote "reinjecting"
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Command.Reinject.perform srcfile k
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importfile ld k = checkdestdir $ do
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ignored <- not <$> Annex.getState Annex.force <&&> checkIgnored destfile
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if ignored
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then do
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warning $ "not importing " ++ destfile ++ " which is .gitignored (use --force to override)"
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stop
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else do
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existing <- liftIO (catchMaybeIO $ getSymbolicLinkStatus destfile)
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case existing of
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Nothing -> importfilechecked ld k
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Just s
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| isDirectory s -> notoverwriting "(is a directory)"
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| isSymbolicLink s -> ifM (Annex.getState Annex.force)
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( do
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liftIO $ nukeFile destfile
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importfilechecked ld k
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, notoverwriting "(is a symlink)"
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)
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| otherwise -> ifM (Annex.getState Annex.force)
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( do
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liftIO $ nukeFile destfile
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importfilechecked ld k
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, notoverwriting "(use --force to override, or a duplication option such as --deduplicate to clean up)"
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)
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checkdestdir cont = do
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let destdir = parentDir destfile
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existing <- liftIO (catchMaybeIO $ getSymbolicLinkStatus destdir)
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case existing of
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Nothing -> cont
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Just s
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| isDirectory s -> cont
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| otherwise -> do
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warning $ "not importing " ++ destfile ++ " because " ++ destdir ++ " is not a directory"
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stop
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importfilechecked ld k = do
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-- Move or copy the src file to the dest file.
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-- The dest file is what will be ingested.
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liftIO $ createDirectoryIfMissing True (parentDir destfile)
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liftIO $ if mode == Duplicate || mode == SkipDuplicates
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then void $ copyFileExternal CopyAllMetaData srcfile destfile
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else moveFile srcfile destfile
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-- Get the inode cache of the dest file. It should be
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-- weakly the same as the origianlly locked down file's
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-- inode cache. (Since the file may have been copied,
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-- its inodes may not be the same.)
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newcache <- withTSDelta $ liftIO . genInodeCache destfile
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let unchanged = case (newcache, inodeCache (keySource ld)) of
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(_, Nothing) -> True
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(Just newc, Just c) | compareWeak c newc -> True
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_ -> False
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unless unchanged $
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giveup "changed while it was being added"
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-- The LockedDown needs to be adjusted, since the destfile
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-- is what will be ingested.
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let ld' = ld
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{ keySource = KeySource
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{ keyFilename = destfile
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, contentLocation = destfile
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, inodeCache = newcache
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}
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}
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ifM (checkFileMatcher largematcher destfile)
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( ingestAdd' (Just ld') (Just k)
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>>= maybe
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stop
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(\addedk -> next $ Command.Add.cleanup addedk True)
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, next $ Command.Add.addSmall destfile
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)
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notoverwriting why = do
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warning $ "not overwriting existing " ++ destfile ++ " " ++ why
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stop
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lockdown a = do
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lockingfile <- not <$> addUnlocked
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-- Minimal lock down with no hard linking so nothing
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-- has to be done to clean up from it.
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let cfg = LockDownConfig
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{ lockingFile = lockingfile
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, hardlinkFileTmp = False
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}
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v <- lockDown cfg srcfile
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case v of
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Just ld -> do
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backend <- chooseBackend destfile
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v' <- genKey (keySource ld) backend
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case v' of
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Just (k, _) -> a (ld, k)
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Nothing -> giveup "failed to generate a key"
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Nothing -> stop
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checkdup k dupa notdupa = ifM (isKnownKey k)
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( dupa
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, notdupa
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)
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pickaction = lockdown $ \(ld, k) -> case mode of
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DeDuplicate -> checkdup k (deletedup k) (importfile ld k)
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CleanDuplicates -> checkdup k
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(deletedup k)
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(skipbecause "not duplicate")
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SkipDuplicates -> checkdup k
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(skipbecause "duplicate")
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(importfile ld k)
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ReinjectDuplicates -> checkdup k
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(reinject k)
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(importfile ld k)
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_ -> importfile ld k
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skipbecause s = showNote (s ++ "; skipping") >> next (return True)
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verifyExisting :: Key -> FilePath -> (CommandPerform, CommandPerform) -> CommandPerform
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verifyExisting key destfile (yes, no) = do
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-- Look up the numcopies setting for the file that it would be
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-- imported to, if it were imported.
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need <- getFileNumCopies destfile
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(tocheck, preverified) <- verifiableCopies key []
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verifyEnoughCopiesToDrop [] key Nothing need [] preverified tocheck
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(const yes) no
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seekRemote :: Remote -> Branch -> Maybe TopFilePath -> CommandSeek
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seekRemote remote branch msubdir = do
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importtreeconfig <- case msubdir of
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Nothing -> return ImportTree
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Just subdir ->
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let mk tree = pure $ ImportSubTree subdir tree
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in fromtrackingbranch Git.Ref.tree >>= \case
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Just tree -> mk tree
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Nothing -> inRepo (Git.Ref.tree branch) >>= \case
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Just tree -> mk tree
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Nothing -> giveup $ "Unable to find base tree for branch " ++ fromRef branch
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parentcommit <- fromtrackingbranch Git.Ref.sha
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let importcommitconfig = ImportCommitConfig parentcommit ManualCommit importmessage
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importable <- download importtreeconfig =<< listcontents
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void $ includeCommandAction $
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commitRemote remote branch tb parentcommit importtreeconfig importcommitconfig importable
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where
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importmessage = "import from " ++ Remote.name remote
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tb = mkRemoteTrackingBranch remote branch
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fromtrackingbranch a = inRepo $ a (fromRemoteTrackingBranch tb)
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listcontents = do
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showStart' "list" (Just (Remote.name remote))
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Remote.listImportableContents (Remote.importActions remote) >>= \case
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Nothing -> do
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showEndFail
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giveup $ "Unable to list contents of " ++ Remote.name remote
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Just importable -> do
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showEndOk
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return importable
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download importtreeconfig importablecontents =
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downloadImport remote importtreeconfig importablecontents >>= \case
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Nothing -> giveup $ "Failed to import some files from " ++ Remote.name remote ++ ". Re-run command to resume import."
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Just importable -> return importable
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commitRemote :: Remote -> Branch -> RemoteTrackingBranch -> Maybe Sha -> ImportTreeConfig -> ImportCommitConfig -> ImportableContents Key -> CommandStart
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commitRemote remote branch tb parentcommit importtreeconfig importcommitconfig importable = do
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showStart' "update" (Just $ fromRef $ fromRemoteTrackingBranch tb)
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next $ do
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importcommit <- buildImportCommit remote importtreeconfig importcommitconfig importable
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next $ updateremotetrackingbranch importcommit
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where
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-- Update the tracking branch. Done even when there
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-- is nothing new to import, to make sure it exists.
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updateremotetrackingbranch importcommit =
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case importcommit <|> parentcommit of
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Just c -> do
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setRemoteTrackingBranch tb c
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return True
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Nothing -> do
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warning $ "Nothing to import and " ++ fromRef branch ++ " does not exist."
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return False
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