From f929d0229c05ebf0fe2c26d443fe6f843f270983 Mon Sep 17 00:00:00 2001
From: Joey Hess <joey@kitenet.net>
Date: Thu, 6 Oct 2011 15:55:50 -0400
Subject: Add timestamps to trust.log.

---
 Trust.hs                                           | 38 +++++++++-------------
 debian/changelog                                   |  1 +
 ...g_trust.log_and_remote.log_merge_wackiness.mdwn |  1 +
 3 files changed, 18 insertions(+), 22 deletions(-)

diff --git a/Trust.hs b/Trust.hs
index 1920bc617..2971256a4 100644
--- a/Trust.hs
+++ b/Trust.hs
@@ -7,29 +7,29 @@
 
 module Trust (
 	TrustLevel(..),
-	trustLog,
 	trustGet,
 	trustSet,
 	trustPartition
 ) where
 
 import qualified Data.Map as M
+import Data.Time.Clock.POSIX
 
 import Common.Annex
 import Types.TrustLevel
 import qualified Annex.Branch
-import UUID
 import qualified Annex
 
+import UUID
+import UUIDLog
+
 {- Filename of trust.log. -}
 trustLog :: FilePath
 trustLog = "trust.log"
 
 {- Returns a list of UUIDs at the specified trust level. -}
 trustGet :: TrustLevel -> Annex [UUID]
-trustGet level = do
-	m <- trustMap
-	return $ M.keys $ M.filter (== level) m
+trustGet level = M.keys . M.filter (== level) <$> trustMap
 
 {- Read the trustLog into a map, overriding with any
  - values from forcetrust. The map is cached for speed. -}
@@ -39,35 +39,29 @@ trustMap = do
 	case cached of
 		Just m -> return m
 		Nothing -> do
-			overrides <- Annex.getState Annex.forcetrust
-			l <- Annex.Branch.get trustLog
-			let m = M.fromList $ trustMapParse l ++ overrides
+			overrides <- M.fromList <$> Annex.getState Annex.forcetrust
+			m <- (M.union overrides . simpleMap . parseLog parseTrust) <$>
+				Annex.Branch.get trustLog
 			Annex.changeState $ \s -> s { Annex.trustmap = Just m }
 			return m
 
-{- Trust map parser. -}
-trustMapParse :: String -> [(UUID, TrustLevel)]
-trustMapParse s = map pair $ filter (not . null) $ lines s
+parseTrust :: String -> Maybe TrustLevel
+parseTrust s
+	| length w > 0 = readMaybe $ head w
+	-- back-compat; the trust.log used to only list trusted repos
+	| otherwise = Just Trusted
 	where
-		pair l
-			| length w > 1 = (w !! 0, read (w !! 1) :: TrustLevel)
-			-- for back-compat; the trust log used to only
-			-- list trusted uuids
-			| otherwise = (w !! 0, Trusted)
-			where
-				w = words l
+		w = words s
 
 {- Changes the trust level for a uuid in the trustLog. -}
 trustSet :: UUID -> TrustLevel -> Annex ()
 trustSet uuid level = do
 	when (null uuid) $
 		error "unknown UUID; cannot modify trust level"
+	ts <- liftIO $ getPOSIXTime
 	Annex.Branch.change trustLog $
-		serialize . M.insert uuid level . M.fromList . trustMapParse
+		showLog show . changeLog ts uuid level . parseLog parseTrust
 	Annex.changeState $ \s -> s { Annex.trustmap = Nothing }
-        where
-                serialize m = unlines $ map showpair $ M.toList m
-		showpair (u, t) = u ++ " " ++ show t
 
 {- Partitions a list of UUIDs to those matching a TrustLevel and not. -}
 trustPartition :: TrustLevel -> [UUID] -> Annex ([UUID], [UUID])
diff --git a/debian/changelog b/debian/changelog
index 5eb7870ef..e5f74bec5 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -12,6 +12,7 @@ git-annex (3.20110929) UNRELEASED; urgency=low
     has been merged.
   * Note that older versions of git-annex will display the timestamp as part
     of the repository description, which is ugly but otherwise harmless.
+  * Add timestamps to trust.log.
 
  -- Joey Hess <joeyh@debian.org>  Thu, 29 Sep 2011 18:58:53 -0400
 
diff --git a/doc/bugs/uuid.log_trust.log_and_remote.log_merge_wackiness.mdwn b/doc/bugs/uuid.log_trust.log_and_remote.log_merge_wackiness.mdwn
index 5a703b2cb..f300d8708 100644
--- a/doc/bugs/uuid.log_trust.log_and_remote.log_merge_wackiness.mdwn
+++ b/doc/bugs/uuid.log_trust.log_and_remote.log_merge_wackiness.mdwn
@@ -24,6 +24,7 @@ would keep working, ignoring the timestamp.
   > update: converted! --[[Joey]] 
 - trust.log: "uuid trustlevel timestamp" would work; old git-annex
   ignores trailing words
+  > update: converted! --[[Joey]] 
 - remote.log: "uuid key=value ... timestamp" is on the edge but does work
   (old git-annex will include the timestamp in the key/value map it builds,
   but that should not break anything really)
-- 
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