42 lines
1.1 KiB
Haskell
42 lines
1.1 KiB
Haskell
{- git-remote-daemon utilities
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-
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- Copyright 2014 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module RemoteDaemon.Common
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( liftAnnex
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, inLocalRepo
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, checkNewShas
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) where
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import qualified Annex
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import Annex.Common
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import RemoteDaemon.Types
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import qualified Git
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import Annex.CatFile
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import Control.Concurrent
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-- Runs an Annex action. Long-running actions should be avoided,
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-- since only one liftAnnex can be running at a time, across all
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-- transports.
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liftAnnex :: TransportHandle -> Annex a -> IO a
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liftAnnex (TransportHandle _ annexstate) a = do
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st <- takeMVar annexstate
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(r, st') <- Annex.run st a
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putMVar annexstate st'
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return r
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inLocalRepo :: TransportHandle -> (Git.Repo -> IO a) -> IO a
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inLocalRepo (TransportHandle g _) a = a g
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-- Check if any of the shas are actally new in the local git repo,
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-- to avoid unnecessary fetching.
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checkNewShas :: TransportHandle -> [Git.Sha] -> IO Bool
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checkNewShas transporthandle = check
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where
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check [] = return True
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check (r:rs) = maybe (check rs) (const $ return False)
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=<< liftAnnex transporthandle (catObjectDetails r)
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