66603d6f75
There should be some speed gains here, especially for chunk and remote state logs, which are queried once per key. Now only old-format uuid-based logs still need to be converted to attoparsec.
65 lines
1.8 KiB
Haskell
65 lines
1.8 KiB
Haskell
{- git-annex repository-global config log
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-
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- Copyright 2017-2019 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 Logs.Config (
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ConfigName,
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ConfigValue,
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setGlobalConfig,
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unsetGlobalConfig,
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getGlobalConfig,
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loadGlobalConfig,
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) where
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import Annex.Common
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import Logs
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import Logs.MapLog
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import qualified Annex.Branch
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import qualified Data.Map as M
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import qualified Data.ByteString.Lazy as L
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import qualified Data.Attoparsec.ByteString.Lazy as A
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import Data.ByteString.Builder
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type ConfigName = String
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type ConfigValue = String
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setGlobalConfig :: ConfigName -> ConfigValue -> Annex ()
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setGlobalConfig name new = do
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curr <- getGlobalConfig name
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when (curr /= Just new) $
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setGlobalConfig' name new
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setGlobalConfig' :: ConfigName -> ConfigValue -> Annex ()
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setGlobalConfig' name new = do
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c <- liftIO currentVectorClock
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Annex.Branch.change configLog $
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buildGlobalConfig . changeMapLog c name new . parseGlobalConfig
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unsetGlobalConfig :: ConfigName -> Annex ()
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unsetGlobalConfig name = do
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curr <- getGlobalConfig name
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when (curr /= Nothing) $
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setGlobalConfig' name "" -- set to empty string to unset
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-- Reads the global config log every time.
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getGlobalConfig :: ConfigName -> Annex (Maybe ConfigValue)
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getGlobalConfig name = M.lookup name <$> loadGlobalConfig
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buildGlobalConfig :: MapLog ConfigName ConfigValue -> Builder
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buildGlobalConfig = buildMapLog fieldbuilder valuebuilder
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where
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fieldbuilder = byteString . encodeBS
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valuebuilder = byteString . encodeBS
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parseGlobalConfig :: L.ByteString -> MapLog ConfigName ConfigValue
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parseGlobalConfig = parseMapLog string string
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where
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string = decodeBS <$> A.takeByteString
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loadGlobalConfig :: Annex (M.Map ConfigName ConfigValue)
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loadGlobalConfig = M.filter (not . null) . simpleMap . parseGlobalConfig
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<$> Annex.Branch.get configLog
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