00dbe35fbc
Anything that needs to examine the file content will fail to match, or fall back to other available information. But the intent is that the matcher be checked for matchNeedsFileContent and only be used if it does not, so the exact behavior doesn't much matter as it should never happen. The real point of this is to not need to provide a dummy content file when matching. This commit was sponsored by Martin D on Patreon.
531 lines
18 KiB
Haskell
531 lines
18 KiB
Haskell
{- git-annex command seeking
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-
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- These functions find appropriate files or other things based on
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- the values a user passes to a command, and prepare actions operating
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- on them.
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-
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- Copyright 2010-2020 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 TupleSections #-}
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module CmdLine.Seek where
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import Annex.Common
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import Types.Command
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import Types.FileMatcher
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import qualified Annex
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import qualified Git
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import qualified Git.LsFiles as LsFiles
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import qualified Git.LsTree as LsTree
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import qualified Git.Types as Git
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import qualified Git.Ref
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import Git.FilePath
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import qualified Limit
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import CmdLine.GitAnnex.Options
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import Logs
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import Logs.Unused
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import Types.Transfer
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import Logs.Transfer
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import Remote.List
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import qualified Remote
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import Annex.CatFile
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import Git.CatFile
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import Annex.CurrentBranch
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import Annex.Content
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import Annex.Link
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import Annex.InodeSentinal
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import Annex.Concurrent
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import Annex.CheckIgnore
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import qualified Annex.Branch
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import qualified Annex.BranchState
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import qualified Database.Keys
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import qualified Utility.RawFilePath as R
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import Utility.Tuple
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import CmdLine.Action
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import Control.Concurrent.Async
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import System.Posix.Types
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data AnnexedFileSeeker = AnnexedFileSeeker
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{ startAction :: SeekInput -> RawFilePath -> Key -> CommandStart
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, checkContentPresent :: Maybe Bool
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, usesLocationLog :: Bool
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}
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withFilesInGitAnnex :: WarnUnmatchWhen -> AnnexedFileSeeker -> WorkTreeItems -> CommandSeek
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withFilesInGitAnnex ww a l = seekFilteredKeys a $
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seekHelper fst3 ww LsFiles.inRepoDetails l
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withFilesInGitAnnexNonRecursive :: WarnUnmatchWhen -> String -> AnnexedFileSeeker -> WorkTreeItems -> CommandSeek
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withFilesInGitAnnexNonRecursive ww needforce a (WorkTreeItems l) = ifM (Annex.getState Annex.force)
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( withFilesInGitAnnex ww a (WorkTreeItems l)
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, if null l
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then giveup needforce
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else seekFilteredKeys a (getfiles [] l)
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)
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where
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getfiles c [] = return (reverse c, pure True)
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getfiles c (p:ps) = do
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os <- seekOptions ww
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(fs, cleanup) <- inRepo $ LsFiles.inRepoDetails os [toRawFilePath p]
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r <- case fs of
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[f] -> do
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void $ liftIO $ cleanup
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fst <$> getfiles ((SeekInput [p], f):c) ps
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[] -> do
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void $ liftIO $ cleanup
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fst <$> getfiles c ps
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_ -> do
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void $ liftIO $ cleanup
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giveup needforce
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return (r, pure True)
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withFilesInGitAnnexNonRecursive _ _ _ NoWorkTreeItems = noop
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withFilesNotInGit :: CheckGitIgnore -> WarnUnmatchWhen -> ((SeekInput, RawFilePath) -> CommandSeek) -> WorkTreeItems -> CommandSeek
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withFilesNotInGit (CheckGitIgnore ci) ww a l = do
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force <- Annex.getState Annex.force
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let include_ignored = force || not ci
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seekFiltered (const (pure True)) a $
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seekHelper id ww (const $ LsFiles.notInRepo [] include_ignored) l
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withPathContents :: ((FilePath, FilePath) -> CommandSeek) -> CmdParams -> CommandSeek
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withPathContents a params = do
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matcher <- Limit.getMatcher
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forM_ params $ \p -> do
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fs <- liftIO $ get p
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forM fs $ \f ->
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whenM (checkmatch matcher f) $
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a f
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where
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get p = ifM (isDirectory <$> getFileStatus p)
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( map (\f -> (f, makeRelative (parentDir p) f))
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<$> dirContentsRecursiveSkipping (".git" `isSuffixOf`) True p
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, return [(p, takeFileName p)]
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)
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checkmatch matcher (f, relf) = matcher $ MatchingFile $ FileInfo
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{ contentFile = Just (toRawFilePath f)
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, matchFile = toRawFilePath relf
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}
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withWords :: ([String] -> CommandSeek) -> CmdParams -> CommandSeek
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withWords a params = a params
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withStrings :: (String -> CommandSeek) -> CmdParams -> CommandSeek
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withStrings a params = sequence_ $ map a params
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withPairs :: ((SeekInput, (String, String)) -> CommandSeek) -> CmdParams -> CommandSeek
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withPairs a params = sequence_ $
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map (\p@(x,y) -> a (SeekInput [x,y], p)) (pairs [] params)
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where
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pairs c [] = reverse c
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pairs c (x:y:xs) = pairs ((x,y):c) xs
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pairs _ _ = giveup "expected pairs"
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withFilesToBeCommitted :: ((SeekInput, RawFilePath) -> CommandSeek) -> WorkTreeItems -> CommandSeek
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withFilesToBeCommitted a l = seekFiltered (const (pure True)) a $
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seekHelper id WarnUnmatchWorkTreeItems (const LsFiles.stagedNotDeleted) l
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{- unlocked pointer files that are staged, and whose content has not been
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- modified-}
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withUnmodifiedUnlockedPointers :: WarnUnmatchWhen -> ((SeekInput, RawFilePath) -> CommandSeek) -> WorkTreeItems -> CommandSeek
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withUnmodifiedUnlockedPointers ww a l =
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seekFiltered (isUnmodifiedUnlocked . snd) a $
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seekHelper id ww (const LsFiles.typeChangedStaged) l
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isUnmodifiedUnlocked :: RawFilePath -> Annex Bool
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isUnmodifiedUnlocked f = catKeyFile f >>= \case
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Nothing -> return False
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Just k -> sameInodeCache f =<< Database.Keys.getInodeCaches k
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{- Finds files that may be modified. -}
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withFilesMaybeModified :: WarnUnmatchWhen -> ((SeekInput, RawFilePath) -> CommandSeek) -> WorkTreeItems -> CommandSeek
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withFilesMaybeModified ww a params = seekFiltered (const (pure True)) a $
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seekHelper id ww LsFiles.modified params
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withKeys :: ((SeekInput, Key) -> CommandSeek) -> CmdParams -> CommandSeek
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withKeys a ls = sequence_ $ map (\l -> a (SeekInput [l], parse l)) ls
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where
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parse p = fromMaybe (giveup "bad key") $ deserializeKey p
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withNothing :: CommandSeek -> CmdParams -> CommandSeek
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withNothing a [] = a
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withNothing _ _ = giveup "This command takes no parameters."
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{- Handles the --all, --branch, --unused, --failed, --key, and
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- --incomplete options, which specify particular keys to run an
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- action on.
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-
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- In a bare repo, --all is the default.
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-
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- Otherwise falls back to a regular CommandSeek action on
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- whatever params were passed.
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-}
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withKeyOptions
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:: Maybe KeyOptions
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-> Bool
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-> AnnexedFileSeeker
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-> ((SeekInput, Key, ActionItem) -> CommandSeek)
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-> (WorkTreeItems -> CommandSeek)
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-> WorkTreeItems
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-> CommandSeek
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withKeyOptions ko auto seeker keyaction = withKeyOptions' ko auto mkkeyaction
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where
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mkkeyaction = do
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matcher <- Limit.getMatcher
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return $ \v@(_si, k, ai) -> checkseeker k $
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let i = case ai of
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ActionItemBranchFilePath (BranchFilePath _ topf) _ ->
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MatchingKey k (AssociatedFile $ Just $ getTopFilePath topf)
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_ -> MatchingKey k (AssociatedFile Nothing)
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in whenM (matcher i) $
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keyaction v
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checkseeker k a = case checkContentPresent seeker of
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Nothing -> a
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Just v -> do
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present <- inAnnex k
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when (present == v) a
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withKeyOptions'
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:: Maybe KeyOptions
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-> Bool
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-> Annex ((SeekInput, Key, ActionItem) -> Annex ())
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-> (WorkTreeItems -> CommandSeek)
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-> WorkTreeItems
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-> CommandSeek
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withKeyOptions' ko auto mkkeyaction fallbackaction worktreeitems = do
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bare <- fromRepo Git.repoIsLocalBare
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when (auto && bare) $
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giveup "Cannot use --auto in a bare repository"
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case (noworktreeitems, ko) of
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(True, Nothing)
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| bare -> noauto runallkeys
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| otherwise -> fallbackaction worktreeitems
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(False, Nothing) -> fallbackaction worktreeitems
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(True, Just WantAllKeys) -> noauto runallkeys
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(True, Just WantUnusedKeys) -> noauto $ runkeyaction unusedKeys'
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(True, Just WantFailedTransfers) -> noauto runfailedtransfers
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(True, Just (WantSpecificKey k)) -> noauto $ runkeyaction (return [k])
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(True, Just WantIncompleteKeys) -> noauto $ runkeyaction incompletekeys
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(True, Just (WantBranchKeys bs)) -> noauto $ runbranchkeys bs
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(False, Just _) -> giveup "Can only specify one of file names, --all, --branch, --unused, --failed, --key, or --incomplete"
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where
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noauto a
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| auto = giveup "Cannot use --auto with --all or --branch or --unused or --key or --incomplete"
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| otherwise = a
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noworktreeitems = case worktreeitems of
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WorkTreeItems [] -> True
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WorkTreeItems _ -> False
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NoWorkTreeItems -> False
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incompletekeys = staleKeysPrune gitAnnexTmpObjectDir True
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-- List all location log files on the git-annex branch,
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-- and use those to get keys. Pass through cat-file
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-- to get the contents of the location logs, and pre-cache
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-- those. This significantly speeds up typical operations
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-- that need to look at the location log for each key.
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runallkeys = do
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keyaction <- mkkeyaction
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config <- Annex.getGitConfig
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g <- Annex.gitRepo
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void Annex.Branch.update
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(l, cleanup) <- inRepo $ LsTree.lsTree
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LsTree.LsTreeRecursive
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Annex.Branch.fullname
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let getk f = fmap (,f) (locationLogFileKey config f)
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let go reader = liftIO reader >>= \case
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Nothing -> return ()
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Just ((k, f), content) -> do
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maybe noop (Annex.BranchState.setCache f) content
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keyaction (SeekInput [], k, mkActionItem k)
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go reader
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catObjectStreamLsTree l (getk . getTopFilePath . LsTree.file) g go
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liftIO $ void cleanup
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runkeyaction getks = do
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keyaction <- mkkeyaction
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ks <- getks
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forM_ ks $ \k -> keyaction (SeekInput [], k, mkActionItem k)
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runbranchkeys bs = do
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keyaction <- mkkeyaction
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forM_ bs $ \b -> do
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(l, cleanup) <- inRepo $ LsTree.lsTree LsTree.LsTreeRecursive b
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forM_ l $ \i -> catKey (LsTree.sha i) >>= \case
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Nothing -> noop
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Just k ->
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let bfp = mkActionItem (BranchFilePath b (LsTree.file i), k)
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in keyaction (SeekInput [], k, bfp)
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unlessM (liftIO cleanup) $
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error ("git ls-tree " ++ Git.fromRef b ++ " failed")
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runfailedtransfers = do
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keyaction <- mkkeyaction
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rs <- remoteList
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ts <- concat <$> mapM (getFailedTransfers . Remote.uuid) rs
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forM_ ts $ \(t, i) ->
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keyaction (SeekInput [], transferKey t, mkActionItem (t, i))
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seekFiltered :: ((SeekInput, RawFilePath) -> Annex Bool) -> ((SeekInput, RawFilePath) -> CommandSeek) -> Annex ([(SeekInput, RawFilePath)], IO Bool) -> Annex ()
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seekFiltered prefilter a listfs = do
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matcher <- Limit.getMatcher
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(fs, cleanup) <- listfs
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sequence_ (map (process matcher) fs)
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liftIO $ void cleanup
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where
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process matcher v@(_si, f) =
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whenM (prefilter v) $
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whenM (matcher $ MatchingFile $ FileInfo (Just f) f) $
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a v
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data MatcherInfo = MatcherInfo
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{ matcherAction :: MatchInfo -> Annex Bool
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, matcherNeedsFileName :: Bool
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, matcherNeedsKey :: Bool
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, matcherNeedsLocationLog :: Bool
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}
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checkMatcherWhen :: MatcherInfo -> Bool -> MatchInfo -> Annex () -> Annex ()
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checkMatcherWhen mi c i a
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| c = whenM (matcherAction mi i) a
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| otherwise = a
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-- This is significantly faster than using lookupKey after seekFiltered,
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-- because of the way data is streamed through git cat-file.
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--
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-- It can also precache location logs using the same efficient streaming.
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seekFilteredKeys :: AnnexedFileSeeker -> Annex ([(SeekInput, (RawFilePath, Git.Sha, FileMode))], IO Bool) -> Annex ()
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seekFilteredKeys seeker listfs = do
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g <- Annex.gitRepo
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mi <- MatcherInfo
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<$> Limit.getMatcher
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<*> Limit.introspect matchNeedsFileName
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<*> Limit.introspect matchNeedsKey
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<*> Limit.introspect matchNeedsLocationLog
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config <- Annex.getGitConfig
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(l, cleanup) <- listfs
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catObjectMetaDataStream g $ \mdfeeder mdcloser mdreader ->
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catObjectStream g $ \ofeeder ocloser oreader -> do
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processertid <- liftIO . async =<< forkState
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(process mi ofeeder mdfeeder mdcloser False l)
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mdprocessertid <- liftIO . async =<< forkState
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(mdprocess mi mdreader ofeeder ocloser)
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if usesLocationLog seeker || matcherNeedsLocationLog mi
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then catObjectStream g $ \lfeeder lcloser lreader -> do
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precachertid <- liftIO . async =<< forkState
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(precacher mi config oreader lfeeder lcloser)
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precachefinisher mi lreader
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join (liftIO (wait precachertid))
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else finisher mi oreader
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join (liftIO (wait mdprocessertid))
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join (liftIO (wait processertid))
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liftIO $ void cleanup
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where
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finisher mi oreader = liftIO oreader >>= \case
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Just ((si, f), content) -> do
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keyaction f mi content $
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commandAction . startAction seeker si f
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finisher mi oreader
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Nothing -> return ()
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precachefinisher mi lreader = liftIO lreader >>= \case
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Just ((logf, (si, f), k), logcontent) -> do
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maybe noop (Annex.BranchState.setCache logf) logcontent
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checkMatcherWhen mi
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(matcherNeedsLocationLog mi && not (matcherNeedsFileName mi))
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(MatchingKey k (AssociatedFile (Just f)))
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(commandAction $ startAction seeker si f k)
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precachefinisher mi lreader
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Nothing -> return ()
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precacher mi config oreader lfeeder lcloser = liftIO oreader >>= \case
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Just ((si, f), content) -> do
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keyaction f mi content $ \k ->
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let logf = locationLogFile config k
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ref = Git.Ref.branchFileRef Annex.Branch.fullname logf
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in liftIO $ lfeeder ((logf, (si, f), k), ref)
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precacher mi config oreader lfeeder lcloser
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Nothing -> liftIO $ void lcloser
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feedmatches mi ofeeder si f sha = checkMatcherWhen mi
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-- When the matcher needs a key or location log
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-- (and does not need a worktree filename), it will be
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-- checked later, to avoid a slow lookup here.
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(not ((matcherNeedsKey mi || matcherNeedsLocationLog mi)
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&& not (matcherNeedsFileName mi)))
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(MatchingFile $ FileInfo (Just f) f)
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(liftIO $ ofeeder ((si, f), sha))
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keyaction f mi content a =
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case parseLinkTargetOrPointerLazy =<< content of
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Just k -> checkMatcherWhen mi
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(matcherNeedsKey mi && not (matcherNeedsFileName mi || matcherNeedsLocationLog mi))
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(MatchingKey k (AssociatedFile (Just f)))
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(checkpresence k (a k))
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Nothing -> noop
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checkpresence k cont = case checkContentPresent seeker of
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Just v -> do
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present <- inAnnex k
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when (present == v) cont
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Nothing -> cont
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process mi ofeeder mdfeeder mdcloser seenpointer ((si, (f, sha, mode)):rest) =
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case Git.toTreeItemType mode of
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Just Git.TreeSymlink -> do
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whenM (exists f) $
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-- Once a pointer file has been seen,
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-- symlinks have to be sent via the
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-- metadata processor too. That is
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-- slightly slower, but preserves the
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-- requested file order.
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if seenpointer
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then liftIO $ mdfeeder ((si, f), sha)
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else feedmatches mi ofeeder si f sha
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process mi ofeeder mdfeeder mdcloser seenpointer rest
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Just Git.TreeSubmodule ->
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process mi ofeeder mdfeeder mdcloser seenpointer rest
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-- Might be a pointer file, might be other
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-- file in git, possibly large. Avoid catting
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-- large files by first looking up the size.
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Just _ -> do
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whenM (exists f) $
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liftIO $ mdfeeder ((si, f), sha)
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process mi ofeeder mdfeeder mdcloser True rest
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Nothing ->
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process mi ofeeder mdfeeder mdcloser seenpointer rest
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process _ _ _ mdcloser _ [] = liftIO $ void mdcloser
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-- Check if files exist, because a deleted file will still be
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-- listed by ls-tree, but should not be processed.
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exists p = isJust <$> liftIO (catchMaybeIO $ R.getSymbolicLinkStatus p)
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mdprocess mi mdreader ofeeder ocloser = liftIO mdreader >>= \case
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Just ((si, f), Just (sha, size, _type))
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| size < maxPointerSz -> do
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feedmatches mi ofeeder si f sha
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mdprocess mi mdreader ofeeder ocloser
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Just _ -> mdprocess mi mdreader ofeeder ocloser
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Nothing -> liftIO $ void ocloser
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|
|
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seekHelper :: (a -> RawFilePath) -> WarnUnmatchWhen -> ([LsFiles.Options] -> [RawFilePath] -> Git.Repo -> IO ([a], IO Bool)) -> WorkTreeItems -> Annex ([(SeekInput, a)], IO Bool)
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seekHelper c ww a (WorkTreeItems l) = do
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os <- seekOptions ww
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inRepo $ \g -> combinelists <$> forM (segmentXargsOrdered l)
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(runSegmentPaths' mk c (\fs -> a os fs g) . map toRawFilePath)
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where
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mk (Just i) f = (SeekInput [fromRawFilePath i], f)
|
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-- This is not accurate, but it only happens when there are a
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-- great many input WorkTreeItems.
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mk Nothing f = (SeekInput [fromRawFilePath (c f)], f)
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|
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combinelists v =
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let r = concat $ concat $ map fst v
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cleanup = and <$> sequence (map snd v)
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|
in (r, cleanup)
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seekHelper _ _ _ NoWorkTreeItems = return ([], pure True)
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|
|
data WarnUnmatchWhen = WarnUnmatchLsFiles | WarnUnmatchWorkTreeItems
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|
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seekOptions :: WarnUnmatchWhen -> Annex [LsFiles.Options]
|
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seekOptions WarnUnmatchLsFiles =
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ifM (annexSkipUnknown <$> Annex.getGitConfig)
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( return []
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, return [LsFiles.ErrorUnmatch]
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)
|
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seekOptions WarnUnmatchWorkTreeItems = return []
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|
|
-- Items in the work tree, which may be files or directories.
|
|
data WorkTreeItems
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= WorkTreeItems [FilePath]
|
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-- ^ An empty list often means all files.
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| NoWorkTreeItems
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-- ^ Used when no work tree items should be operated on.
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|
deriving (Show)
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|
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-- When in an adjusted branch that hides some files, it may not exist
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-- in the current work tree, but in the original branch. This allows
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-- seeking for such files.
|
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newtype AllowHidden = AllowHidden Bool
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|
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-- git ls-files without --error-unmatch seeks work tree items matching
|
|
-- some criteria, and silently skips over anything that does not exist.
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|
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-- Also, when two directories are symlinked, referring to a file
|
|
-- inside the symlinked directory will be silently skipped by
|
|
-- git ls-files without --error-unmatch.
|
|
--
|
|
-- Sometimes a command needs to use git-lsfiles that way, perhaps repeatedly.
|
|
-- But users expect an error message when one of the files they provided
|
|
-- as a command-line parameter doesn't exist, so this checks that each
|
|
-- exists when run with WarnUnmatchWorkTreeItems.
|
|
--
|
|
-- Note that, unlike --error-unmatch, using this does not warn
|
|
-- about command-line parameters that exist, but are not checked into git.
|
|
workTreeItems :: WarnUnmatchWhen -> CmdParams -> Annex WorkTreeItems
|
|
workTreeItems = workTreeItems' (AllowHidden False)
|
|
|
|
workTreeItems' :: AllowHidden -> WarnUnmatchWhen -> CmdParams -> Annex WorkTreeItems
|
|
workTreeItems' (AllowHidden allowhidden) ww ps = case ww of
|
|
WarnUnmatchWorkTreeItems -> runcheck
|
|
WarnUnmatchLsFiles ->
|
|
ifM (annexSkipUnknown <$> Annex.getGitConfig)
|
|
( runcheck
|
|
, return $ WorkTreeItems ps
|
|
)
|
|
where
|
|
runcheck = do
|
|
currbranch <- getCurrentBranch
|
|
stopattop <- prepviasymlink
|
|
ps' <- flip filterM ps $ \p -> do
|
|
relf <- liftIO $ relPathCwdToFile p
|
|
ifM (not <$> (exists p <||> hidden currbranch relf))
|
|
( prob (p ++ " not found")
|
|
, ifM (viasymlink stopattop (upFrom relf))
|
|
( prob (p ++ " is beyond a symbolic link")
|
|
, return True
|
|
)
|
|
)
|
|
if null ps' && not (null ps)
|
|
then return NoWorkTreeItems
|
|
else return (WorkTreeItems ps')
|
|
|
|
exists p = isJust <$> liftIO (catchMaybeIO $ getSymbolicLinkStatus p)
|
|
|
|
prepviasymlink = do
|
|
repotopst <- inRepo $
|
|
maybe
|
|
(pure Nothing)
|
|
(catchMaybeIO . R.getSymbolicLinkStatus)
|
|
. Git.repoWorkTree
|
|
return $ \st -> case repotopst of
|
|
Nothing -> False
|
|
Just tst -> fileID st == fileID tst
|
|
&& deviceID st == deviceID tst
|
|
|
|
viasymlink _ Nothing = return False
|
|
viasymlink stopattop (Just p) = do
|
|
st <- liftIO $ getSymbolicLinkStatus p
|
|
if stopattop st
|
|
then return False
|
|
else if isSymbolicLink st
|
|
then return True
|
|
else viasymlink stopattop (upFrom p)
|
|
|
|
hidden currbranch f
|
|
| allowhidden = isJust
|
|
<$> catObjectMetaDataHidden (toRawFilePath f) currbranch
|
|
| otherwise = return False
|
|
|
|
prob msg = do
|
|
toplevelWarning False msg
|
|
Annex.incError
|
|
return False
|
|
|
|
notSymlink :: RawFilePath -> IO Bool
|
|
notSymlink f = liftIO $ not . isSymbolicLink <$> R.getSymbolicLinkStatus f
|