2366e7fb84
* whereis: If a remote fails to report on urls where a key is located, display a warning, rather than giving up and not displaying any information. * When external special remotes fail but neglect to provide an error message, say what request failed, which is better than displaying an empty error message to the user.
120 lines
3.5 KiB
Haskell
120 lines
3.5 KiB
Haskell
{- git-annex command
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-
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- Copyright 2010-2016 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.Whereis where
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import Command
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import Remote
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import Logs.Trust
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import Logs.Web
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import Remote.Web (getWebUrls)
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import Annex.UUID
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import qualified Data.Map as M
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import qualified Data.Vector as V
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cmd :: Command
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cmd = noCommit $ withGlobalOptions [jsonOptions, annexedMatchingOptions] $
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command "whereis" SectionQuery
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"lists repositories that have file content"
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paramPaths (seek <$$> optParser)
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data WhereisOptions = WhereisOptions
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{ whereisFiles :: CmdParams
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, keyOptions :: Maybe KeyOptions
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, batchOption :: BatchMode
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}
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optParser :: CmdParamsDesc -> Parser WhereisOptions
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optParser desc = WhereisOptions
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<$> cmdParams desc
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<*> optional parseKeyOptions
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<*> parseBatchOption
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seek :: WhereisOptions -> CommandSeek
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seek o = do
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m <- remoteMap id
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let go = whenAnnexed $ start m
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case batchOption o of
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Batch fmt -> batchFilesMatching fmt (go . toRawFilePath)
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NoBatch ->
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withKeyOptions (keyOptions o) False
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(commandAction . startKeys m)
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(withFilesInGit (commandAction . go))
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=<< workTreeItems (whereisFiles o)
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start :: M.Map UUID Remote -> RawFilePath -> Key -> CommandStart
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start remotemap file key = startKeys remotemap (key, mkActionItem (key, afile))
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where
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afile = AssociatedFile (Just file)
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startKeys :: M.Map UUID Remote -> (Key, ActionItem) -> CommandStart
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startKeys remotemap (key, ai) = starting "whereis" ai $ perform remotemap key
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perform :: M.Map UUID Remote -> Key -> CommandPerform
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perform remotemap key = do
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locations <- keyLocations key
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urls <- getUUIDUrls key locations remotemap
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(untrustedlocations, safelocations) <- trustPartition UnTrusted locations
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let num = length safelocations
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showNote $ show num ++ " " ++ copiesplural num
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pp <- ppwhereis "whereis" safelocations urls
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unless (null safelocations) $ showLongNote pp
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pp' <- ppwhereis "untrusted" untrustedlocations urls
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unless (null untrustedlocations) $ showLongNote $ untrustedheader ++ pp'
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mapM_ (showRemoteUrls remotemap) urls
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if null safelocations then stop else next $ return True
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where
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copiesplural 1 = "copy"
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copiesplural _ = "copies"
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untrustedheader = "The following untrusted locations may also have copies:\n"
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ppwhereis h ls urls = do
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descm <- uuidDescriptions
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let urlvals = map (\(u, us) -> (u, Just (V.fromList us))) $
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filter (\(u,_) -> u `elem` ls) urls
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prettyPrintUUIDsWith (Just "urls") h descm (const Nothing) urlvals
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getUUIDUrls :: Key -> [UUID] -> M.Map UUID Remote -> Annex [(UUID, [URLString])]
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getUUIDUrls key uuids remotemap = forM uuids $ \uu -> (,)
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<$> pure uu
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<*> maybe (pure []) (getRemoteUrls key) (M.lookup uu remotemap)
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getRemoteUrls :: Key -> Remote -> Annex [URLString]
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getRemoteUrls key remote
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| uuid remote == webUUID = getWebUrls key
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| otherwise = (++)
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<$> askremote
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<*> claimedurls
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where
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askremote = case whereisKey remote of
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Nothing -> pure []
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Just w -> tryNonAsync (w key) >>= \case
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Right l -> pure l
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Left e -> do
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warning $ unwords
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[ "unable to query remote"
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, name remote
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, "for urls:"
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, show e
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]
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return []
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claimedurls = do
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us <- map fst
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. filter (\(_, d) -> d == OtherDownloader)
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. map getDownloader
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<$> getUrls key
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filterM (\u -> (==) <$> pure remote <*> claimingUrl u) us
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showRemoteUrls :: M.Map UUID Remote -> (UUID, [URLString]) -> Annex ()
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showRemoteUrls remotemap (uu, us)
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| null us = noop
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| otherwise = case M.lookup uu remotemap of
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Just r -> showLongNote $
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unlines $ map (\u -> name r ++ ": " ++ u) us
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Nothing -> noop
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