scan for unlocked files on init/upgrade of v6 repo

Annex/Init.hs

@@ -1,6 +1,6 @@
 {- git-annex repository initialization
  -
- - Copyright 2011 Joey Hess <id@joeyh.name>
+ - Copyright 2011-2016 Joey Hess <id@joeyh.name>
  -
  - Licensed under the GNU GPL version 3 or higher.
  -}
@@ -36,6 +36,7 @@ import Annex.Environment
 import Annex.Hook
 import Annex.InodeSentinal
 import Upgrade
+import qualified Database.Keys
 #ifndef mingw32_HOST_OS
 import Utility.UserInfo
 import Utility.FileMode
@@ -87,8 +88,9 @@ initialize' mversion = do
 	setDifferences
 	unlessM (isJust <$> getVersion) $
 		setVersion (fromMaybe defaultVersion mversion)
-	whenM versionSupportsUnlockedPointers
+	whenM versionSupportsUnlockedPointers $ do
 		configureSmudgeFilter
+		Database.Keys.scanAssociatedFiles
 	ifM (crippledFileSystem <&&> not <$> isBare)
 		( do
 			enableDirectMode

Database/Keys.hs

@@ -1,14 +1,14 @@
 {- Sqlite database of information about Keys
  -
- - Copyright 2015 Joey Hess <id@joeyh.name>
+ - Copyright 2015-2016 Joey Hess <id@joeyh.name>
- -:
+ -
  - Licensed under the GNU GPL version 3 or higher.
  -}
 
 {-# LANGUAGE QuasiQuotes, TypeFamilies, TemplateHaskell #-}
 {-# LANGUAGE OverloadedStrings, GADTs, FlexibleContexts #-}
 {-# LANGUAGE MultiParamTypeClasses, GeneralizedNewtypeDeriving #-}
-{-# LANGUAGE RankNTypes #-}
+{-# LANGUAGE RankNTypes, ScopedTypeVariables #-}
 
 module Database.Keys (
 	DbHandle,
@@ -16,6 +16,7 @@ module Database.Keys (
 	getAssociatedFiles,
 	getAssociatedKey,
 	removeAssociatedFile,
+	scanAssociatedFiles,
 	storeInodeCaches,
 	addInodeCaches,
 	getInodeCaches,
@@ -35,6 +36,12 @@ import Annex.Perms
 import Annex.LockFile
 import Utility.InodeCache
 import Annex.InodeSentinal
+import qualified Git.Types
+import qualified Git.LsTree
+import Git.Ref
+import Git.FilePath
+import Annex.CatFile
+import Messages
 
 import Database.Persist.TH
 import Database.Esqueleto hiding (Key)
@@ -203,6 +210,27 @@ removeAssociatedFile' :: SKey -> FilePath -> Writer
 removeAssociatedFile' sk f = queueDb $ 
 	delete $ from $ \r -> do
 		where_ (r ^. AssociatedKey ==. val sk &&. r ^. AssociatedFile ==. val f)
+	
+{- Find all unlocked associated files. This is expensive, and so normally
+ - the associated files are updated incrementally when changes are noticed. -}
+scanAssociatedFiles :: Annex ()
+scanAssociatedFiles = runWriter $ \h -> do
+	showSideAction "scanning for unlocked files"
+	dropallassociated h
+	l <- inRepo $ Git.LsTree.lsTree headRef
+	forM_ l $ \i -> 
+		when (isregfile i) $
+			maybe noop (add h i)
+				=<< catKey (Git.Types.Ref $ Git.LsTree.sha i)
+  where
+	dropallassociated = queueDb $
+		delete $ from $ \(_r :: SqlExpr (Entity Associated)) ->
+			return ()
+	isregfile i = Git.Types.toBlobType (Git.LsTree.mode i) == Just Git.Types.FileBlob
+	add h i k = flip queueDb h $ 
+		void $ insertUnique $ Associated
+			(toSKey k)
+			(getTopFilePath $ Git.LsTree.file i)
 
 {- Stats the files, and stores their InodeCaches. -}
 storeInodeCaches :: Key -> [FilePath] -> Annex ()

Test.hs

@@ -124,8 +124,8 @@ tests = testGroup "Tests" $ properties :
 	map (\(d, te) -> withTestMode te (unitTests d)) testmodes
   where
 	testmodes =
-		-- ("v6 unlocked", (testMode "6") { unlockedFiles = True })
+		[ ("v6 unlocked", (testMode "6") { unlockedFiles = True })
-		[ ("v6 locked", testMode "6")
+		, ("v6 locked", testMode "6")
 		, ("v5", testMode "5")
 #ifndef mingw32_HOST_OS
 		-- Windows will only use direct mode, so don't test twice.

Upgrade/V5.hs

@@ -49,6 +49,7 @@ upgrade automatic = do
 		showLongNote "Changes have been staged for all annexed files in this repository; you should run `git commit` to commit these changes."
 		showLongNote "Any other clones of this repository that use direct mode need to be upgraded now, too."
 	configureSmudgeFilter
+	Database.Keys.scanAssociatedFiles
 	-- Inode sentinal file was only used in direct mode and when
 	-- locking down files as they were added. In v6, it's used more
 	-- extensively, so make sure it exists, since old repos that didn't

doc/todo/smudge.mdwn

@@ -4,14 +4,6 @@ git-annex should use smudge/clean filters.
 
 * Test suite has a currently disabled pass that tests v6 unlocked files.
   That pass has many failures.
-* Associated files database is not populated when a repository is cloned,
-  because the smudge filters are not set up when git checks out the work
-  tree. So, git annex get etc won't work immediately after cloning.
-  Need to make init run through the whole work index and populate the
-  associated files database.
-  (Or could update it incrementally, so git-annex get foo updates the
-  database for foo's key. But, then if bar has the same content as foo, bar
-  wouldn't be populated by get foo.)
 * Reconcile staged changes into the associated files database, whenever
   the database is queried. This is needed to handle eg:
   	git add largefile