diff hgext/largefiles/lfutil.py @ 47280:1766130fe9ba

dirstate-v2: Change the on-disk format when the requirement is enabled

For now, the format is the same except with an additional marker at the start.

This marker is redundant: for existing repositories it is `.hg/requires` that
determines which format to use. For new repositories, it is the new
`format.exp-dirstate-v2` config. There is no upgrade or downgrade so far.

Most of the changes are about plumbing a boolean through layers of APIs to
indicate which format should be used.

Differential Revision: https://phab.mercurial-scm.org/D10719

--- a/hgext/largefiles/lfutil.py	Wed May 19 13:15:00 2021 +0200
+++ b/hgext/largefiles/lfutil.py	Wed May 19 13:15:00 2021 +0200
@@ -25,6 +25,7 @@
     httpconnection,
     match as matchmod,
     pycompat,
+    requirements,
     scmutil,
     sparse,
     util,
@@ -197,6 +198,7 @@
     vfs = repo.vfs
     lfstoredir = longname
     opener = vfsmod.vfs(vfs.join(lfstoredir))
+    use_dirstate_v2 = requirements.DIRSTATE_V2_REQUIREMENT in repo.requirements
     lfdirstate = largefilesdirstate(
         opener,
         ui,
@@ -204,6 +206,7 @@
         repo.dirstate._validate,
         lambda: sparse.matcher(repo),
         repo.nodeconstants,
+        use_dirstate_v2,
     )
 
     # If the largefiles dirstate does not exist, populate and create