git-annex/Command/Config.hs
Joey Hess 8e5ea28c26
finish CommandStart transition
The hoped for optimisation of CommandStart with -J did not materialize.
In fact, not runnign CommandStart in parallel is slower than -J3.
So, CommandStart are still run in parallel.

(The actual bad performance I've been seeing with -J in my big repo
has to do with building the remoteList.)

But, this is still progress toward making -J faster, because it gets rid
of the onlyActionOn roadblock in the way of making CommandCleanup jobs
run separate from CommandPerform jobs.

Added OnlyActionOn constructor for ActionItem which fixes the
onlyActionOn breakage in the last commit.

Made CustomOutput include an ActionItem, so even things using it can
specify OnlyActionOn.

In Command.Move and Command.Sync, there were CommandStarts that used
includeCommandAction, so output messages, which is no longer allowed.
Fixed by using startingCustomOutput, but that's still not quite right,
since it prevents message display for the includeCommandAction run
inside it too.
2019-06-12 13:24:01 -04:00

66 lines
1.6 KiB
Haskell

{- git-annex command
-
- Copyright 2017 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Command.Config where
import Command
import Logs.Config
import Config
cmd :: Command
cmd = noMessages $ command "config" SectionSetup
"configuration stored in git-annex branch"
paramNothing (seek <$$> optParser)
data Action
= SetConfig ConfigName ConfigValue
| GetConfig ConfigName
| UnsetConfig ConfigName
type Name = String
type Value = String
optParser :: CmdParamsDesc -> Parser Action
optParser _ = setconfig <|> getconfig <|> unsetconfig
where
setconfig = SetConfig
<$> strOption
( long "set"
<> help "set configuration"
<> metavar paramName
)
<*> strArgument
( metavar paramValue
)
getconfig = GetConfig <$> strOption
( long "get"
<> help "get configuration"
<> metavar paramName
)
unsetconfig = UnsetConfig <$> strOption
( long "unset"
<> help "unset configuration"
<> metavar paramName
)
seek :: Action -> CommandSeek
seek (SetConfig name val) = commandAction $
startingUsualMessages name (ActionItemOther (Just val)) $ do
setGlobalConfig name val
setConfig (ConfigKey name) val
next $ return True
seek (UnsetConfig name) = commandAction $
startingUsualMessages name (ActionItemOther (Just "unset")) $do
unsetGlobalConfig name
unsetConfig (ConfigKey name)
next $ return True
seek (GetConfig name) = commandAction $
startingCustomOutput (ActionItemOther Nothing) $ do
getGlobalConfig name >>= \case
Nothing -> return ()
Just v -> liftIO $ putStrLn v
next $ return True