git-annex/Command/Assistant.hs
Joey Hess 60da0d6ad2 full autostart support
git annex assistant --autostart will start separate daemons in each
listed autostart repo

running the webapp outside any git-annex repo will open it on the
first listed autostart repo
2012-08-02 00:42:33 -04:00

72 lines
2 KiB
Haskell

{- git-annex assistant
-
- Copyright 2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Assistant where
import Common.Annex
import Command
import qualified Option
import qualified Command.Watch
import Init
import Locations.UserConfig
import System.Environment
import System.Posix.Directory
def :: [Command]
def = [noRepo checkAutoStart $ dontCheck repoExists $
withOptions [Command.Watch.foregroundOption, Command.Watch.stopOption, autoStartOption] $
command "assistant" paramNothing seek "automatically handle changes"]
autoStartOption :: Option
autoStartOption = Option.flag [] "autostart" "start in known repositories"
seek :: [CommandSeek]
seek = [withFlag Command.Watch.stopOption $ \stopdaemon ->
withFlag Command.Watch.foregroundOption $ \foreground ->
withFlag autoStartOption $ \autostart ->
withNothing $ start foreground stopdaemon autostart]
start :: Bool -> Bool -> Bool -> CommandStart
start foreground stopdaemon autostart
| autostart = do
liftIO $ autoStart
stop
| otherwise = do
ensureInitialized
Command.Watch.start True foreground stopdaemon
{- Run outside a git repository. Check to see if any parameter is
- --autostart and enter autostart mode. -}
checkAutoStart :: IO ()
checkAutoStart = ifM (any (== "--autostart") <$> getArgs)
( autoStart
, error "Not in a git repository."
)
autoStart :: IO ()
autoStart = do
autostartfile <- autoStartFile
let nothing = error $ "Nothing listed in " ++ autostartfile
ifM (doesFileExist autostartfile)
( do
dirs <- lines <$> readFile autostartfile
programfile <- programFile
program <- catchDefaultIO (readFile programfile) "git-annex"
when (null dirs) nothing
forM_ dirs $ \d -> do
putStrLn $ "git-annex autostart in " ++ d
ifM (catchBoolIO $ go program d)
( putStrLn "ok"
, putStrLn "failed"
)
, nothing
)
where
go program dir = do
changeWorkingDirectory dir
boolSystem program [Param "assistant"]