f95f340c73
Switch listContents to being a proper CommandStart, so if it throws an exception, it will be treated like any other command action that fails. downloadImport apparently does not ever throw an exception, and itself uses commandAction, so it can't be a CommandStart.
317 lines
10 KiB
Haskell
317 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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import Control.Concurrent.STM
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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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let commitimport = commitRemote remote branch tb parentcommit importtreeconfig importcommitconfig
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importabletvar <- liftIO $ newTVarIO Nothing
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void $ includeCommandAction (listContents remote importabletvar)
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liftIO (atomically (readTVar importabletvar)) >>= \case
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Nothing -> return ()
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Just importable -> downloadImport remote importtreeconfig importable >>= \case
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Nothing -> warning $ concat
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[ "Failed to import some files from "
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, Remote.name remote
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, ". Re-run command to resume import."
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]
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Just imported -> void $
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includeCommandAction $ commitimport imported
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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 :: Remote -> TVar (Maybe (ImportableContents (ContentIdentifier, Remote.ByteSize))) -> CommandStart
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listContents remote tvar = do
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showStart' "list" (Just (Remote.name remote))
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next $ Remote.listImportableContents (Remote.importActions remote) >>= \case
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Nothing -> giveup $ "Unable to list contents of " ++ Remote.name remote
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Just importable -> next $ do
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liftIO $ atomically $ writeTVar tvar (Just importable)
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return True
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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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