60 lines
1.4 KiB
Haskell
60 lines
1.4 KiB
Haskell
{- Web url logs.
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-
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- Copyright 2011 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 Logs.Web (
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URLString,
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webUUID,
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getUrls,
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setUrlPresent,
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setUrlMissing,
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) where
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import Common.Annex
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import Logs.Presence
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import Logs.Location
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import Types.Key
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type URLString = String
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-- Dummy uuid for the whole web. Do not alter.
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webUUID :: UUID
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webUUID = UUID "00000000-0000-0000-0000-000000000001"
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urlLog :: Key -> FilePath
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urlLog key = hashDirLower key </> keyFile key ++ ".log.web"
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{- Used to store the urls elsewhere. -}
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oldurlLogs :: Key -> [FilePath]
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oldurlLogs key =
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[ "remote/web" </> hashDirLower key </> key2file key ++ ".log"
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, "remote/web" </> hashDirLower key </> keyFile key ++ ".log"
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]
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{- Gets all urls that a key might be available from. -}
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getUrls :: Key -> Annex [URLString]
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getUrls key = go $ urlLog key : oldurlLogs key
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where
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go [] = return []
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go (l:ls) = do
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us <- currentLog l
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if null us
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then go ls
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else return us
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setUrlPresent :: Key -> URLString -> Annex ()
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setUrlPresent key url = do
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us <- getUrls key
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unless (url `elem` us) $ do
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addLog (urlLog key) =<< logNow InfoPresent url
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-- update location log to indicate that the web has the key
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logChange key webUUID InfoPresent
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setUrlMissing :: Key -> URLString -> Annex ()
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setUrlMissing key url = do
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addLog (urlLog key) =<< logNow InfoMissing url
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whenM (null <$> getUrls key) $
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logChange key webUUID InfoMissing
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