63 lines
1.7 KiB
Haskell
63 lines
1.7 KiB
Haskell
{-# LANGUAGE BangPatterns #-}
|
|
|
|
{- git-annex location log
|
|
-
|
|
- git-annex keeps track of which repositories have the contents of annexed
|
|
- files.
|
|
-
|
|
- Repositories record their UUID and the date when they --get or --drop
|
|
- a value.
|
|
-
|
|
- Copyright 2010-2011 Joey Hess <joey@kitenet.net>
|
|
-
|
|
- Licensed under the GNU GPL version 3 or higher.
|
|
-}
|
|
|
|
module Logs.Location (
|
|
LogStatus(..),
|
|
logStatus,
|
|
logChange,
|
|
loggedLocations,
|
|
loggedKeys,
|
|
loggedKeysFor,
|
|
) where
|
|
|
|
import Common.Annex
|
|
import qualified Annex.Branch
|
|
import Logs
|
|
import Logs.Presence
|
|
import Annex.UUID
|
|
|
|
{- Log a change in the presence of a key's value in current repository. -}
|
|
logStatus :: Key -> LogStatus -> Annex ()
|
|
logStatus key s = do
|
|
u <- getUUID
|
|
logChange key u s
|
|
|
|
{- Log a change in the presence of a key's value in a repository. -}
|
|
logChange :: Key -> UUID -> LogStatus -> Annex ()
|
|
logChange key (UUID u) s = addLog (locationLogFile key) =<< logNow s u
|
|
logChange _ NoUUID _ = noop
|
|
|
|
{- Returns a list of repository UUIDs that, according to the log, have
|
|
- the value of a key.
|
|
-}
|
|
loggedLocations :: Key -> Annex [UUID]
|
|
loggedLocations key = map toUUID <$> (currentLog . locationLogFile) key
|
|
|
|
{- Finds all keys that have location log information.
|
|
- (There may be duplicate keys in the list.) -}
|
|
loggedKeys :: Annex [Key]
|
|
loggedKeys = mapMaybe locationLogFileKey <$> Annex.Branch.files
|
|
|
|
{- Finds all keys that have location log information indicating
|
|
- they are present for the specified repository. -}
|
|
loggedKeysFor :: UUID -> Annex [Key]
|
|
loggedKeysFor u = filterM isthere =<< loggedKeys
|
|
where
|
|
{- This should run strictly to avoid the filterM
|
|
- building many thunks containing keyLocations data. -}
|
|
isthere k = do
|
|
us <- loggedLocations k
|
|
let !there = u `elem` us
|
|
return there
|