git-annex/Assistant/Threads/WebApp.hs
Joey Hess 3da0064657 assistant unused file handling
Make sanity checker run git annex unused daily, and queue up transfers
of unused files to any remotes that will have them. The transfer retrying
code works for us here, so eg when a backup disk remote is plugged in,
any transfers to it are done. Once the unused files reach a remote,
they'll be removed locally as unwanted.

If the setup does not cause unused files to go to a remote, they'll pile
up, and the sanity checker detects this using some heuristics that are
pretty good -- 1000 unused files, or 10% of disk used by unused files,
or more disk wasted by unused files than is left free. Once it detects
this, it pops up an alert in the webapp, with a button to take action.

TODO: Webapp UI to configure this, and also the ability to launch an
immediate cleanup of all unused files.

This commit was sponsored by Simon Michael.
2014-01-22 22:53:18 -04:00

111 lines
3.4 KiB
Haskell

{- git-annex assistant webapp thread
-
- Copyright 2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE TemplateHaskell, MultiParamTypeClasses #-}
{-# LANGUAGE CPP #-}
{-# OPTIONS_GHC -fno-warn-orphans #-}
module Assistant.Threads.WebApp where
import Assistant.Common
import Assistant.WebApp
import Assistant.WebApp.Types
import Assistant.WebApp.DashBoard
import Assistant.WebApp.SideBar
import Assistant.WebApp.Notifications
import Assistant.WebApp.RepoList
import Assistant.WebApp.Configurators
import Assistant.WebApp.Configurators.Local
import Assistant.WebApp.Configurators.Ssh
import Assistant.WebApp.Configurators.Pairing
import Assistant.WebApp.Configurators.AWS
import Assistant.WebApp.Configurators.IA
import Assistant.WebApp.Configurators.WebDAV
import Assistant.WebApp.Configurators.XMPP
import Assistant.WebApp.Configurators.Preferences
import Assistant.WebApp.Configurators.Unused
import Assistant.WebApp.Configurators.Edit
import Assistant.WebApp.Configurators.Delete
import Assistant.WebApp.Configurators.Fsck
import Assistant.WebApp.Configurators.Upgrade
import Assistant.WebApp.Documentation
import Assistant.WebApp.Control
import Assistant.WebApp.OtherRepos
import Assistant.WebApp.Repair
import Assistant.Types.ThreadedMonad
import Utility.WebApp
import Utility.Tmp
import Utility.FileMode
import Git
import Yesod
import Network.Socket (SockAddr, HostName)
import Data.Text (pack, unpack)
mkYesodDispatch "WebApp" $(parseRoutesFile "Assistant/WebApp/routes")
type Url = String
webAppThread
:: AssistantData
-> UrlRenderer
-> Bool
-> Maybe String
-> Maybe HostName
-> Maybe (IO Url)
-> Maybe (Url -> FilePath -> IO ())
-> NamedThread
webAppThread assistantdata urlrenderer noannex cannotrun listenhost postfirstrun onstartup = thread $ liftIO $ do
#ifdef __ANDROID__
when (isJust listenhost) $
-- See Utility.WebApp
error "Sorry, --listen is not currently supported on Android"
#endif
webapp <- WebApp
<$> pure assistantdata
<*> (pack <$> genRandomToken)
<*> getreldir
<*> pure staticRoutes
<*> pure postfirstrun
<*> pure cannotrun
<*> pure noannex
<*> pure listenhost
setUrlRenderer urlrenderer $ yesodRender webapp (pack "")
app <- toWaiAppPlain webapp
app' <- ifM debugEnabled
( return $ httpDebugLogger app
, return app
)
runWebApp listenhost app' $ \addr -> if noannex
then withTmpFile "webapp.html" $ \tmpfile h -> do
hClose h
go addr webapp tmpfile Nothing
else do
let st = threadState assistantdata
htmlshim <- runThreadState st $ fromRepo gitAnnexHtmlShim
urlfile <- runThreadState st $ fromRepo gitAnnexUrlFile
go addr webapp htmlshim (Just urlfile)
where
-- The webapp thread does not wait for the startupSanityCheckThread
-- to finish, so that the user interface remains responsive while
-- that's going on.
thread = namedThreadUnchecked "WebApp"
getreldir
| noannex = return Nothing
| otherwise = Just <$>
(relHome =<< absPath
=<< runThreadState (threadState assistantdata) (fromRepo repoPath))
go addr webapp htmlshim urlfile = do
let url = myUrl webapp addr
maybe noop (`writeFileProtected` url) urlfile
writeHtmlShim "Starting webapp..." url htmlshim
maybe noop (\a -> a url htmlshim) onstartup
myUrl :: WebApp -> SockAddr -> Url
myUrl webapp addr = unpack $ yesodRender webapp urlbase DashboardR []
where
urlbase = pack $ "http://" ++ show addr