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|
{- git-annex remotes
-
- Copyright 2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Remote (
Remote,
uuid,
name,
storeKey,
retrieveKeyFile,
removeKey,
hasKey,
hasKeyCheap,
remoteTypes,
genList,
byName,
prettyPrintUUIDs,
remotesWithUUID,
remotesWithoutUUID,
keyPossibilities,
keyPossibilitiesTrusted,
nameToUUID,
showTriedRemotes,
showLocations,
forceTrust
) where
import Control.Monad (filterM, liftM2)
import Data.List
import qualified Data.Map as M
import Data.String.Utils
import Types
import Types.Remote
import UUID
import qualified Annex
import Config
import Trust
import LocationLog
import Messages
import RemoteLog
import qualified Remote.Git
import qualified Remote.S3
import qualified Remote.Bup
import qualified Remote.Directory
import qualified Remote.Rsync
import qualified Remote.Web
import qualified Remote.Hook
remoteTypes :: [RemoteType Annex]
remoteTypes =
[ Remote.Git.remote
, Remote.S3.remote
, Remote.Bup.remote
, Remote.Directory.remote
, Remote.Rsync.remote
, Remote.Web.remote
, Remote.Hook.remote
]
{- Builds a list of all available Remotes.
- Since doing so can be expensive, the list is cached. -}
genList :: Annex [Remote Annex]
genList = do
rs <- Annex.getState Annex.remotes
if null rs
then do
m <- readRemoteLog
l <- mapM (process m) remoteTypes
let rs' = concat l
Annex.changeState $ \s -> s { Annex.remotes = rs' }
return rs'
else return rs
where
process m t =
enumerate t >>=
filterM remoteNotIgnored >>=
mapM (gen m t)
gen m t r = do
u <- getUUID r
generate t r u (M.lookup u m)
{- Looks up a remote by name. (Or by UUID.) -}
byName :: String -> Annex (Remote Annex)
byName n = do
res <- byName' n
case res of
Left e -> error e
Right r -> return r
byName' :: String -> Annex (Either String (Remote Annex))
byName' "" = return $ Left "no remote specified"
byName' n = do
allremotes <- genList
let match = filter matching allremotes
if (null match)
then return $ Left $ "there is no git remote named \"" ++ n ++ "\""
else return $ Right $ head match
where
matching r = n == name r || n == uuid r
{- Looks up a remote by name (or by UUID, or even by description),
- and returns its UUID. -}
nameToUUID :: String -> Annex UUID
nameToUUID "." = getUUID =<< Annex.gitRepo -- special case for current repo
nameToUUID n = do
res <- byName' n
case res of
Left e -> return . (maybe (error e) id) =<< byDescription
Right r -> return $ uuid r
where
byDescription = return . M.lookup n . invertMap =<< uuidMap
invertMap = M.fromList . map swap . M.toList
swap (a, b) = (b, a)
{- Pretty-prints a list of UUIDs of remotes. -}
prettyPrintUUIDs :: [UUID] -> Annex String
prettyPrintUUIDs uuids = do
here <- getUUID =<< Annex.gitRepo
-- Show descriptions from the uuid log, falling back to remote names,
-- as some remotes may not be in the uuid log.
m <- liftM2 M.union uuidMap $
return . M.fromList . map (\r -> (uuid r, name r)) =<< genList
return $ unwords $ map (\u -> "\t" ++ prettify m u here ++ "\n") uuids
where
prettify m u here = base ++ ishere
where
base = if not $ null $ findlog m u
then u ++ " -- " ++ findlog m u
else u
ishere = if here == u then " <-- here" else ""
findlog m u = M.findWithDefault "" u m
{- Filters a list of remotes to ones that have the listed uuids. -}
remotesWithUUID :: [Remote Annex] -> [UUID] -> [Remote Annex]
remotesWithUUID rs us = filter (\r -> uuid r `elem` us) rs
{- Filters a list of remotes to ones that do not have the listed uuids. -}
remotesWithoutUUID :: [Remote Annex] -> [UUID] -> [Remote Annex]
remotesWithoutUUID rs us = filter (\r -> uuid r `notElem` us) rs
{- Cost ordered lists of remotes that the LocationLog indicate may have a key.
-}
keyPossibilities :: Key -> Annex [Remote Annex]
keyPossibilities key = return . fst =<< keyPossibilities' False key
{- Cost ordered lists of remotes that the LocationLog indicate may have a key.
-
- Also returns a list of UUIDs that are trusted to have the key
- (some may not have configured remotes).
-}
keyPossibilitiesTrusted :: Key -> Annex ([Remote Annex], [UUID])
keyPossibilitiesTrusted = keyPossibilities' True
keyPossibilities' :: Bool -> Key -> Annex ([Remote Annex], [UUID])
keyPossibilities' withtrusted key = do
g <- Annex.gitRepo
u <- getUUID g
trusted <- if withtrusted then trustGet Trusted else return []
-- get uuids of all remotes that are recorded to have the key
uuids <- keyLocations key
let validuuids = filter (/= u) uuids
-- note that validuuids is assumed to not have dups
let validtrusteduuids = intersect validuuids trusted
-- remotes that match uuids that have the key
allremotes <- genList
let validremotes = remotesWithUUID allremotes validuuids
return (sort validremotes, validtrusteduuids)
{- Displays known locations of a key. -}
showLocations :: Key -> [UUID] -> Annex ()
showLocations key exclude = do
g <- Annex.gitRepo
u <- getUUID g
uuids <- keyLocations key
untrusteduuids <- trustGet UnTrusted
let uuidswanted = filteruuids uuids (u:exclude++untrusteduuids)
let uuidsskipped = filteruuids uuids (u:exclude++uuidswanted)
ppuuidswanted <- Remote.prettyPrintUUIDs uuidswanted
ppuuidsskipped <- Remote.prettyPrintUUIDs uuidsskipped
showLongNote $ message ppuuidswanted ppuuidsskipped
where
filteruuids l x = filter (`notElem` x) l
message [] [] = "No other repository is known to contain the file."
message rs [] = "Try making some of these repositories available:\n" ++ rs
message [] us = "Also these untrusted repositories may contain the file:\n" ++ us
message rs us = message rs [] ++ message [] us
showTriedRemotes :: [Remote Annex] -> Annex ()
showTriedRemotes [] = return ()
showTriedRemotes remotes =
showLongNote $ "Unable to access these remotes: " ++
(join ", " $ map name remotes)
forceTrust :: TrustLevel -> String -> Annex ()
forceTrust level remotename = do
r <- nameToUUID remotename
Annex.changeState $ \s ->
s { Annex.forcetrust = (r, level):Annex.forcetrust s }
|
