6c565ec905
This has not been tested at all. It compiles! The only known missing things are support for encryption, and for get/set of special remote configuration, and of key state. (The latter needs separate work to add a new per-key log file to store that state.) Only thing I don't much like is that initremote needs to be passed both type=external and externaltype=foo. It would be better to have just type=foo Most of this is quite straightforward code, that largely wrote itself given the types. The only tricky parts were: * Need to lock the remote when using it to eg make a request, because in theory git-annex could have multiple threads that each try to use a remote at the same time. I don't think that git-annex ever does that currently, but better safe than sorry. * Rather than starting up every external special remote program when git-annex starts, they are started only on demand, when first used. This will avoid slowdown, especially when running fast git-annex query commands. Once started, they keep running until git-annex stops, currently, which may not be ideal, but it's hard to know a better time to stop them. * Bit of a chicken and egg problem with caching the cost of the remote, because setting annex-cost in the git config needs the remote to already be set up. Managed to finesse that. This commit was sponsored by Lukas Anzinger.
89 lines
3 KiB
Haskell
89 lines
3 KiB
Haskell
{- Git configuration
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-
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- Copyright 2011-2012 Joey Hess <joey@kitenet.net>
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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 Config where
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import Common.Annex
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import qualified Git
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import qualified Git.Config
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import qualified Git.Command
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import qualified Annex
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import Config.Cost
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type UnqualifiedConfigKey = String
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data ConfigKey = ConfigKey String
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instance Show ConfigKey where
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show (ConfigKey s) = s
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{- Looks up a setting in git config. -}
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getConfig :: ConfigKey -> String -> Annex String
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getConfig (ConfigKey key) def = fromRepo $ Git.Config.get key def
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getConfigMaybe :: ConfigKey -> Annex (Maybe String)
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getConfigMaybe (ConfigKey key) = fromRepo $ Git.Config.getMaybe key
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{- Changes a git config setting in both internal state and .git/config -}
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setConfig :: ConfigKey -> String -> Annex ()
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setConfig (ConfigKey key) value = do
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inRepo $ Git.Command.run [Param "config", Param key, Param value]
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Annex.changeGitRepo =<< inRepo Git.Config.reRead
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{- Unsets a git config setting. (Leaves it in state currently.) -}
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unsetConfig :: ConfigKey -> Annex ()
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unsetConfig ck@(ConfigKey key) = ifM (isJust <$> getConfigMaybe ck)
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( inRepo $ Git.Command.run
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[Param "config", Param "--unset", Param key]
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, noop -- avoid unsetting something not set; that would fail
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)
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{- A per-remote config setting in git config. -}
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remoteConfig :: Git.Repo -> UnqualifiedConfigKey -> ConfigKey
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remoteConfig r key = ConfigKey $
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"remote." ++ fromMaybe "" (Git.remoteName r) ++ ".annex-" ++ key
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{- A global annex setting in git config. -}
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annexConfig :: UnqualifiedConfigKey -> ConfigKey
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annexConfig key = ConfigKey $ "annex." ++ key
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{- Calculates cost for a remote. Either the specific default, or as configured
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- by remote.<name>.annex-cost, or if remote.<name>.annex-cost-command
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- is set and prints a number, that is used. -}
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remoteCost :: RemoteGitConfig -> Cost -> Annex Cost
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remoteCost c def = fromMaybe def <$> remoteCost' c
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remoteCost' :: RemoteGitConfig -> Annex (Maybe Cost)
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remoteCost' c = case remoteAnnexCostCommand c of
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Just cmd | not (null cmd) -> liftIO $
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readish <$> readProcess "sh" ["-c", cmd]
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_ -> return $ remoteAnnexCost c
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setRemoteCost :: Git.Repo -> Cost -> Annex ()
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setRemoteCost r c = setConfig (remoteConfig r "cost") (show c)
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getNumCopies :: Maybe Int -> Annex Int
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getNumCopies (Just v) = return v
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getNumCopies Nothing = annexNumCopies <$> Annex.getGitConfig
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isDirect :: Annex Bool
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isDirect = annexDirect <$> Annex.getGitConfig
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crippledFileSystem :: Annex Bool
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crippledFileSystem = annexCrippledFileSystem <$> Annex.getGitConfig
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setCrippledFileSystem :: Bool -> Annex ()
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setCrippledFileSystem b = do
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setConfig (annexConfig "crippledfilesystem") (Git.Config.boolConfig b)
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Annex.changeGitConfig $ \c -> c { annexCrippledFileSystem = b }
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{- Gets the http headers to use. -}
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getHttpHeaders :: Annex [String]
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getHttpHeaders = do
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v <- annexHttpHeadersCommand <$> Annex.getGitConfig
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case v of
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Just cmd -> lines <$> liftIO (readProcess "sh" ["-c", cmd])
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Nothing -> annexHttpHeaders <$> Annex.getGitConfig
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