65 lines
1.7 KiB
Haskell
65 lines
1.7 KiB
Haskell
{- git-annex assistant dropping of unwanted content
|
|
-
|
|
- Copyright 2012 Joey Hess <joey@kitenet.net>
|
|
-
|
|
- Licensed under the GNU GPL version 3 or higher.
|
|
-}
|
|
|
|
module Assistant.Drop where
|
|
|
|
import Assistant.Common
|
|
import Assistant.DaemonStatus
|
|
import Logs.Location
|
|
import Logs.Trust
|
|
import Types.Remote (AssociatedFile)
|
|
import qualified Remote
|
|
import qualified Command.Drop
|
|
import Command
|
|
import Annex.Wanted
|
|
import Config
|
|
|
|
{- Drop from local and/or remote when allowed by the preferred content and
|
|
- numcopies settings. -}
|
|
handleDrops :: Bool -> Key -> AssociatedFile -> Assistant ()
|
|
handleDrops _ _ Nothing = noop
|
|
handleDrops fromhere key f = do
|
|
syncrs <- syncRemotes <$> getDaemonStatus
|
|
liftAnnex $ do
|
|
locs <- loggedLocations key
|
|
handleDrops' locs syncrs fromhere key f
|
|
|
|
handleDrops' :: [UUID] -> [Remote] -> Bool -> Key -> AssociatedFile -> Annex ()
|
|
handleDrops' _ _ _ _ Nothing = noop
|
|
handleDrops' locs rs fromhere key (Just f)
|
|
| fromhere = do
|
|
n <- getcopies
|
|
if checkcopies n
|
|
then go rs =<< dropl n
|
|
else go rs n
|
|
| otherwise = go rs =<< getcopies
|
|
where
|
|
getcopies = do
|
|
have <- length . snd <$> trustPartition UnTrusted locs
|
|
numcopies <- getNumCopies =<< numCopies f
|
|
return (have, numcopies)
|
|
checkcopies (have, numcopies) = have > numcopies
|
|
decrcopies (have, numcopies) = (have - 1, numcopies)
|
|
|
|
go [] _ = noop
|
|
go (r:rest) n
|
|
| checkcopies n = dropr r n >>= go rest
|
|
| otherwise = noop
|
|
|
|
checkdrop n@(_, numcopies) u a = ifM (wantDrop u (Just f))
|
|
( ifM (doCommand $ a (Just numcopies))
|
|
( return $ decrcopies n
|
|
, return n
|
|
)
|
|
, return n
|
|
)
|
|
|
|
dropl n = checkdrop n Nothing $ \numcopies ->
|
|
Command.Drop.startLocal f numcopies key
|
|
|
|
dropr r n = checkdrop n (Just $ Remote.uuid r) $ \numcopies ->
|
|
Command.Drop.startRemote f numcopies key r
|