94fcd0cf59
This commit includes a paydown on technical debt incurred two years ago, when I didn't know that it was bad to make custom Read and Show instances for types. As the routes need Read and Show for Transfer, which includes a Key, and deriving my own Read instance of key was not practical, I had to finally clean that up. So the compact Key read and show functions are now file2key and key2file, and Read and Show are now derived instances. Changed all code that used the old instances, compiler checked. (There were a few places, particularly in Command.Unused, and the test suite where the Show instance continue to be used for legitimate comparisons; ie show key_x == show key_y (though really in a bloom filter))
60 lines
1.5 KiB
Haskell
60 lines
1.5 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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setUrl,
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setUrlPresent,
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getUrls
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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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{- Records a change in an url for a key. -}
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setUrl :: Key -> URLString -> LogStatus -> Annex ()
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setUrl key url status = do
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us <- getUrls key
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unless (status == InfoPresent && url `elem` us) $ do
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addLog (urlLog key) =<< logNow status url
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-- update location log to indicate that the web has the key, or not
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us' <- getUrls key
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logChange key webUUID (if null us' then InfoMissing else InfoPresent)
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setUrlPresent :: Key -> URLString -> Annex ()
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setUrlPresent key url = setUrl key url InfoPresent
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