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exchange: move disabling of rev-branch-cache bundle part out of narrow
authorGregory Szorc <gregory.szorc@gmail.com>
Sat, 28 Jul 2018 10:41:23 -0700
changeset 38789 9b64b73d702b
parent 38788 a9ff2b0c11dd
child 38790 3e7387337a3c
exchange: move disabling of rev-branch-cache bundle part out of narrow I'm attempting to refactor changegroup code in order to better support alternate storage backends. The narrow extension is performing a lot of monkeypatching to this code and it is making it difficult to reason about how everything works. I'm reasonably certain I would be unable to abstract storage without requiring extensive rework of narrow. I believe it is less effort to move narrow code into core so it can be accounted for when changegroup code is refactored. So I'll be doing that. The first part of this is integrating the disabling of the cache:rev-branch-cache bundle2 part into core. This doesn't seem like it is related to changegroup, but narrow's modifications to changegroup are invasive and also require taking its code for bundle generation and exchange into core in order for the changegroup code to work. Differential Revision: https://phab.mercurial-scm.org/D4007
hgext/narrow/narrowbundle2.py file | annotate | diff | comparison | revisions
mercurial/exchange.py file | annotate | diff | comparison | revisions 
--- a/hgext/narrow/narrowbundle2.py	Tue Jul 24 10:47:42 2018 -0700
+++ b/hgext/narrow/narrowbundle2.py	Sat Jul 28 10:41:23 2018 -0700
@@ -487,19 +487,6 @@
             origcgfn(*args, **kwargs)
     exchange.getbundle2partsmapping['changegroup'] = wrappedcgfn
 
-    # disable rev branch cache exchange when serving a narrow bundle
-    # (currently incompatible with that part)
-    origrbcfn = exchange.getbundle2partsmapping['cache:rev-branch-cache']
-    def wrappedcgfn(*args, **kwargs):
-        repo = args[1]
-        if repo.ui.has_section(_NARROWACL_SECTION):
-            return
-        elif kwargs.get(r'narrow', False):
-            return
-        else:
-            origrbcfn(*args, **kwargs)
-    exchange.getbundle2partsmapping['cache:rev-branch-cache'] = wrappedcgfn
-
     # Extend changegroup receiver so client can fixup after widen requests.
     origcghandler = bundle2.parthandlermapping['changegroup']
     def wrappedcghandler(op, inpart):
--- a/mercurial/exchange.py	Tue Jul 24 10:47:42 2018 -0700
+++ b/mercurial/exchange.py	Sat Jul 28 10:41:23 2018 -0700
@@ -44,6 +44,8 @@
 urlerr = util.urlerr
 urlreq = util.urlreq
 
+_NARROWACL_SECTION = 'narrowhgacl'
+
 # Maps bundle version human names to changegroup versions.
 _bundlespeccgversions = {'v1': '01',
                          'v2': '02',
@@ -2069,8 +2071,13 @@
     # Don't send unless:
     # - changeset are being exchanged,
     # - the client supports it.
-    if not (kwargs.get(r'cg', True)) or 'rev-branch-cache' not in b2caps:
+    # - narrow bundle isn't in play (not currently compatible).
+    if (not kwargs.get(r'cg', True)
+        or 'rev-branch-cache' not in b2caps
+        or kwargs.get(r'narrow', False)
+        or repo.ui.has_section(_NARROWACL_SECTION)):
         return
+
     outgoing = _computeoutgoing(repo, heads, common)
     bundle2.addpartrevbranchcache(repo, bundler, outgoing)
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