git-annex/Remote/Web.hs
Joey Hess f8836306fa
remove "checking remotename" message
This fixes fsck of a remote that uses chunking displaying
(checking remotename) (checking remotename)" for every chunk.

Also, some remotes displayed the message, and others did not, with no
consistency. It was originally displayed only when accessing remotes
that were expensive or might involve a password prompt, I think, but
nothing in the API said when to do it so it became an inconsistent mess.

Originally I thought fsck should always display it. But it only displays
in fsck --from remote, so the user knows the remote is being accessed,
so there is no reason to tell them it's accessing it over and over.

It was also possible for git-annex move to sometimes display it twice,
due to checking if content is present twice. But, the user of move
specifies --from/--to, so it does not need to display when it's
accessing the remote, as the user expects it to access the remote.

git-annex get might display it, but only if the remote also supports
hasKeyCheap, which is really only local git remotes, which didn't
display it always; and in any case nothing displayed it before hasKeyCheap,
which is checked first, so I don't think this needs to display it ever.

mirror is like move. And that's all the main places it would have been
displayed.

This commit was sponsored by Jochen Bartl on Patreon.
2021-04-27 13:05:27 -04:00

130 lines
3.6 KiB
Haskell

{- Web remote.
-
- Copyright 2011 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Remote.Web (remote, getWebUrls) where
import Annex.Common
import Types.Remote
import Remote.Helper.ExportImport
import qualified Git
import qualified Git.Construct
import Annex.Content
import Config.Cost
import Config
import Logs.Web
import Annex.UUID
import Utility.Metered
import qualified Annex.Url as Url
import Annex.YoutubeDl
import Annex.SpecialRemote.Config
remote :: RemoteType
remote = RemoteType
{ typename = "web"
, enumerate = list
, generate = gen
, configParser = mkRemoteConfigParser []
, setup = error "not supported"
, exportSupported = exportUnsupported
, importSupported = importUnsupported
, thirdPartyPopulated = False
}
-- There is only one web remote, and it always exists.
-- (If the web should cease to exist, remove this module and redistribute
-- a new release to the survivors by carrier pigeon.)
list :: Bool -> Annex [Git.Repo]
list _autoinit = do
r <- liftIO $ Git.Construct.remoteNamed "web" (pure Git.Construct.fromUnknown)
return [r]
gen :: Git.Repo -> UUID -> RemoteConfig -> RemoteGitConfig -> RemoteStateHandle -> Annex (Maybe Remote)
gen r _ rc gc rs = do
c <- parsedRemoteConfig remote rc
cst <- remoteCost gc expensiveRemoteCost
return $ Just Remote
{ uuid = webUUID
, cost = cst
, name = Git.repoDescribe r
, storeKey = uploadKey
, retrieveKeyFile = downloadKey
, retrieveKeyFileCheap = Nothing
-- HttpManagerRestricted is used here, so this is
-- secure.
, retrievalSecurityPolicy = RetrievalAllKeysSecure
, removeKey = dropKey
, lockContent = Nothing
, checkPresent = checkKey
, checkPresentCheap = False
, exportActions = exportUnsupported
, importActions = importUnsupported
, whereisKey = Nothing
, remoteFsck = Nothing
, repairRepo = Nothing
, config = c
, gitconfig = gc
, localpath = Nothing
, getRepo = return r
, readonly = True
, appendonly = False
, untrustworthy = False
, availability = GloballyAvailable
, remotetype = remote
, mkUnavailable = return Nothing
, getInfo = return []
, claimUrl = Nothing -- implicitly claims all urls
, checkUrl = Nothing
, remoteStateHandle = rs
}
downloadKey :: Key -> AssociatedFile -> FilePath -> MeterUpdate -> Annex Verification
downloadKey key _af dest p = do
get =<< getWebUrls key
return UnVerified
where
get [] = giveup "no known url"
get urls = do
r <- untilTrue urls $ \u -> do
let (u', downloader) = getDownloader u
case downloader of
YoutubeDownloader -> youtubeDlTo key u' dest p
_ -> Url.withUrlOptions $ downloadUrl key p [u'] dest
unless r $
giveup "download failed"
uploadKey :: Key -> AssociatedFile -> MeterUpdate -> Annex ()
uploadKey _ _ _ = giveup "upload to web not supported"
dropKey :: Key -> Annex ()
dropKey k = mapM_ (setUrlMissing k) =<< getWebUrls k
checkKey :: Key -> Annex Bool
checkKey key = do
us <- getWebUrls key
if null us
then return False
else either giveup return =<< checkKey' key us
checkKey' :: Key -> [URLString] -> Annex (Either String Bool)
checkKey' key us = firsthit us (Right False) $ \u -> do
let (u', downloader) = getDownloader u
case downloader of
YoutubeDownloader -> youtubeDlCheck u'
_ -> catchMsgIO $
Url.withUrlOptions $ Url.checkBoth u' (fromKey keySize key)
where
firsthit [] miss _ = return miss
firsthit (u:rest) _ a = do
r <- a u
case r of
Right True -> return r
_ -> firsthit rest r a
getWebUrls :: Key -> Annex [URLString]
getWebUrls key = filter supported <$> getUrls key
where
supported u = snd (getDownloader u)
`elem` [WebDownloader, YoutubeDownloader]