keep logs of failed transfers, and requeue them when doing a non-full scan

of a remote

Command/SendKey.hs

@@ -12,6 +12,7 @@ import Command
 import Annex.Content
 import Utility.RsyncFile
 import Logs.Transfer
+import qualified Fields
 
 def :: [Command]
 def = [oneShot $ command "sendkey" paramKey seek
@@ -24,9 +25,17 @@ start :: Key -> CommandStart
 start key = ifM (inAnnex key)
 	( fieldTransfer Upload key $ do
 		file <- inRepo $ gitAnnexLocation key
-		liftIO $ ifM (rsyncServerSend file)
-			( exitSuccess , exitFailure )
+		liftIO $ rsyncServerSend file
 	, do
 		warning "requested key is not present"
 		liftIO exitFailure
 	)
+
+fieldTransfer :: Direction -> Key -> Annex Bool -> CommandStart
+fieldTransfer direction key a = do
+	afile <- Fields.getField Fields.associatedFile
+	ok <- maybe a (\u -> runTransfer (Transfer direction (toUUID u) key) afile a)
+		=<< Fields.getField Fields.remoteUUID
+	if ok
+		then liftIO exitSuccess
+		else liftIO exitFailure