git-annex/Logs/Web.hs
2011-10-15 16:25:51 -04:00

49 lines
1.2 KiB
Haskell

{- Web url logs.
-
- Copyright 2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Logs.Web (
URLString,
webUUID,
setUrl,
getUrls
) where
import Common.Annex
import Logs.Presence
import Logs.Location
import Logs.UUID
type URLString = String
-- Dummy uuid for the whole web. Do not alter.
webUUID :: UUID
webUUID = "00000000-0000-0000-0000-000000000001"
{- The urls for a key are stored in remote/web/hash/key.log
- in the git-annex branch. -}
urlLog :: Key -> FilePath
urlLog key = "remote/web" </> hashDirLower key </> keyFile key ++ ".log"
oldurlLog :: Key -> FilePath
{- A bug used to store the urls elsewhere. -}
oldurlLog key = "remote/web" </> hashDirLower key </> show key ++ ".log"
getUrls :: Key -> Annex [URLString]
getUrls key = do
us <- currentLog (urlLog key)
if null us
then currentLog (oldurlLog key)
else return us
{- Records a change in an url for a key. -}
setUrl :: Key -> URLString -> LogStatus -> Annex ()
setUrl key url status = do
g <- gitRepo
addLog (urlLog key) =<< logNow status url
-- update location log to indicate that the web has the key, or not
us <- getUrls key
logChange g key webUUID (if null us then InfoMissing else InfoPresent)