bookmarks: allow existing remote bookmarks to become heads when pushing

mercurial/discovery.py

@@ -1,256 +1,265
 # discovery.py - protocol changeset discovery functions
 #
 # Copyright 2010 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from node import nullid, short
 from i18n import _
 import util, setdiscovery, treediscovery, phases
 
 def findcommonincoming(repo, remote, heads=None, force=False):
     """Return a tuple (common, anyincoming, heads) used to identify the common
     subset of nodes between repo and remote.
 
     "common" is a list of (at least) the heads of the common subset.
     "anyincoming" is testable as a boolean indicating if any nodes are missing
       locally. If remote does not support getbundle, this actually is a list of
       roots of the nodes that would be incoming, to be supplied to
       changegroupsubset. No code except for pull should be relying on this fact
       any longer.
     "heads" is either the supplied heads, or else the remote's heads.
 
     If you pass heads and they are all known locally, the reponse lists justs
     these heads in "common" and in "heads".
 
     Please use findcommonoutgoing to compute the set of outgoing nodes to give
     extensions a good hook into outgoing.
     """
 
     if not remote.capable('getbundle'):
         return treediscovery.findcommonincoming(repo, remote, heads, force)
 
     if heads:
         allknown = True
         nm = repo.changelog.nodemap
         for h in heads:
             if nm.get(h) is None:
                 allknown = False
                 break
         if allknown:
             return (heads, False, heads)
 
     res = setdiscovery.findcommonheads(repo.ui, repo, remote,
                                        abortwhenunrelated=not force)
     common, anyinc, srvheads = res
     return (list(common), anyinc, heads or list(srvheads))
 
 class outgoing(object):
     '''Represents the set of nodes present in a local repo but not in a
     (possibly) remote one.
 
     Members:
 
       missing is a list of all nodes present in local but not in remote.
       common is a list of all nodes shared between the two repos.
       excluded is the list of missing changeset that shouldn't be sent remotely.
       missingheads is the list of heads of missing.
       commonheads is the list of heads of common.
 
     The sets are computed on demand from the heads, unless provided upfront
     by discovery.'''
 
     def __init__(self, revlog, commonheads, missingheads):
         self.commonheads = commonheads
         self.missingheads = missingheads
         self._revlog = revlog
         self._common = None
         self._missing = None
         self.excluded = []
 
     def _computecommonmissing(self):
         sets = self._revlog.findcommonmissing(self.commonheads,
                                               self.missingheads)
         self._common, self._missing = sets
 
     @util.propertycache
     def common(self):
         if self._common is None:
             self._computecommonmissing()
         return self._common
 
     @util.propertycache
     def missing(self):
         if self._missing is None:
             self._computecommonmissing()
         return self._missing
 
 def findcommonoutgoing(repo, other, onlyheads=None, force=False,
                        commoninc=None, portable=False):
     '''Return an outgoing instance to identify the nodes present in repo but
     not in other.
 
     If onlyheads is given, only nodes ancestral to nodes in onlyheads
     (inclusive) are included. If you already know the local repo's heads,
     passing them in onlyheads is faster than letting them be recomputed here.
 
     If commoninc is given, it must the the result of a prior call to
     findcommonincoming(repo, other, force) to avoid recomputing it here.
 
     If portable is given, compute more conservative common and missingheads,
     to make bundles created from the instance more portable.'''
     # declare an empty outgoing object to be filled later
     og = outgoing(repo.changelog, None, None)
 
     # get common set if not provided
     if commoninc is None:
         commoninc = findcommonincoming(repo, other, force=force)
     og.commonheads, _any, _hds = commoninc
 
     # compute outgoing
     if not repo._phasecache.phaseroots[phases.secret]:
         og.missingheads = onlyheads or repo.heads()
     elif onlyheads is None:
         # use visible heads as it should be cached
         og.missingheads = phases.visibleheads(repo)
         og.excluded = [ctx.node() for ctx in repo.set('secret()')]
     else:
         # compute common, missing and exclude secret stuff
         sets = repo.changelog.findcommonmissing(og.commonheads, onlyheads)
         og._common, allmissing = sets
         og._missing = missing = []
         og.excluded = excluded = []
         for node in allmissing:
             if repo[node].phase() >= phases.secret:
                 excluded.append(node)
             else:
                 missing.append(node)
         if excluded:
             # update missing heads
             missingheads = phases.newheads(repo, onlyheads, excluded)
         else:
             missingheads = onlyheads
         og.missingheads = missingheads
 
     if portable:
         # recompute common and missingheads as if -r<rev> had been given for
         # each head of missing, and --base <rev> for each head of the proper
         # ancestors of missing
         og._computecommonmissing()
         cl = repo.changelog
         missingrevs = set(cl.rev(n) for n in og._missing)
         og._common = set(cl.ancestors(*missingrevs)) - missingrevs
         commonheads = set(og.commonheads)
         og.missingheads = [h for h in og.missingheads if h not in commonheads]
 
     return og
 
 def checkheads(repo, remote, outgoing, remoteheads, newbranch=False, inc=False):
     """Check that a push won't add any outgoing head
 
     raise Abort error and display ui message as needed.
     """
     if remoteheads == [nullid]:
         # remote is empty, nothing to check.
         return
 
     cl = repo.changelog
     if remote.capable('branchmap'):
         # Check for each named branch if we're creating new remote heads.
         # To be a remote head after push, node must be either:
         # - unknown locally
         # - a local outgoing head descended from update
         # - a remote head that's known locally and not
         #   ancestral to an outgoing head
 
         # 1. Create set of branches involved in the push.
         branches = set(repo[n].branch() for n in outgoing.missing)
 
         # 2. Check for new branches on the remote.
         if remote.local():
             remotemap = phases.visiblebranchmap(remote)
         else:
             remotemap = remote.branchmap()
         newbranches = branches - set(remotemap)
         if newbranches and not newbranch: # new branch requires --new-branch
             branchnames = ', '.join(sorted(newbranches))
             raise util.Abort(_("push creates new remote branches: %s!")
                                % branchnames,
                              hint=_("use 'hg push --new-branch' to create"
                                     " new remote branches"))
         branches.difference_update(newbranches)
 
         # 3. Construct the initial oldmap and newmap dicts.
         # They contain information about the remote heads before and
         # after the push, respectively.
         # Heads not found locally are not included in either dict,
         # since they won't be affected by the push.
         # unsynced contains all branches with incoming changesets.
         oldmap = {}
         newmap = {}
         unsynced = set()
         for branch in branches:
             remotebrheads = remotemap[branch]
             prunedbrheads = [h for h in remotebrheads if h in cl.nodemap]
             oldmap[branch] = prunedbrheads
             newmap[branch] = list(prunedbrheads)
             if len(remotebrheads) > len(prunedbrheads):
                 unsynced.add(branch)
 
         # 4. Update newmap with outgoing changes.
         # This will possibly add new heads and remove existing ones.
         ctxgen = (repo[n] for n in outgoing.missing)
         repo._updatebranchcache(newmap, ctxgen)
 
     else:
         # 1-4b. old servers: Check for new topological heads.
         # Construct {old,new}map with branch = None (topological branch).
         # (code based on _updatebranchcache)
         oldheads = set(h for h in remoteheads if h in cl.nodemap)
         newheads = oldheads.union(outgoing.missing)
         if len(newheads) > 1:
             for latest in reversed(outgoing.missing):
                 if latest not in newheads:
                     continue
                 minhrev = min(cl.rev(h) for h in newheads)
                 reachable = cl.reachable(latest, cl.node(minhrev))
                 reachable.remove(latest)
                 newheads.difference_update(reachable)
         branches = set([None])
         newmap = {None: newheads}
         oldmap = {None: oldheads}
         unsynced = inc and branches or set()
 
     # 5. Check for new heads.
     # If there are more heads after the push than before, a suitable
     # error message, depending on unsynced status, is displayed.
     error = None
+    remotebookmarks = remote.listkeys('bookmarks')
+    localbookmarks = repo._bookmarks
+
     for branch in branches:
         newhs = set(newmap[branch])
         oldhs = set(oldmap[branch])
+        dhs = None
         if len(newhs) > len(oldhs):
-            dhs = list(newhs - oldhs)
+            # strip updates to existing remote heads from the new heads list
+            bookmarkedheads = set([repo[bm].node() for bm in localbookmarks
+                                   if bm in remotebookmarks and
+                                   remote[bm] == repo[bm].ancestor(remote[bm])])
+            dhs = list(newhs - bookmarkedheads - oldhs)
+        if dhs:
             if error is None:
                 if branch not in ('default', None):
                     error = _("push creates new remote head %s "
                               "on branch '%s'!") % (short(dhs[0]), branch)
                 else:
                     error = _("push creates new remote head %s!"
                               ) % short(dhs[0])
                 if branch in unsynced:
                     hint = _("you should pull and merge or "
                              "use push -f to force")
                 else:
                     hint = _("did you forget to merge? "
                              "use push -f to force")
             if branch is not None:
                 repo.ui.note(_("new remote heads on branch '%s'\n") % branch)
             for h in dhs:
                 repo.ui.note(_("new remote head %s\n") % short(h))
     if error:
         raise util.Abort(error, hint=hint)
 
     # 6. Check for unsynced changes on involved branches.
     if unsynced:
         repo.ui.warn(_("note: unsynced remote changes!\n"))

tests/test-bookmarks-pushpull.t

@@ -1,215 +1,254
   $ "$TESTDIR/hghave" serve || exit 80
 
 initialize
 
   $ hg init a
   $ cd a
   $ echo 'test' > test
   $ hg commit -Am'test'
   adding test
 
 set bookmarks
 
   $ hg bookmark X
   $ hg bookmark Y
   $ hg bookmark Z
 
 import bookmark by name
 
   $ hg init ../b
   $ cd ../b
   $ hg book Y
   $ hg book
    * Y                         -1:000000000000
   $ hg pull ../a
   pulling from ../a
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   updating bookmark Y
   adding remote bookmark X
   adding remote bookmark Z
   (run 'hg update' to get a working copy)
   $ hg bookmarks
      X                         0:4e3505fd9583
      Y                         0:4e3505fd9583
      Z                         0:4e3505fd9583
   $ hg debugpushkey ../a namespaces
   bookmarks	
   phases	
   namespaces	
   $ hg debugpushkey ../a bookmarks
   Y	4e3505fd95835d721066b76e75dbb8cc554d7f77
   X	4e3505fd95835d721066b76e75dbb8cc554d7f77
   Z	4e3505fd95835d721066b76e75dbb8cc554d7f77
   $ hg pull -B X ../a
   pulling from ../a
   no changes found
   importing bookmark X
   $ hg bookmark
      X                         0:4e3505fd9583
      Y                         0:4e3505fd9583
      Z                         0:4e3505fd9583
 
 export bookmark by name
 
   $ hg bookmark W
   $ hg bookmark foo
   $ hg bookmark foobar
   $ hg push -B W ../a
   pushing to ../a
   searching for changes
   no changes found
   exporting bookmark W
   [1]
   $ hg -R ../a bookmarks
      W                         -1:000000000000
      X                         0:4e3505fd9583
      Y                         0:4e3505fd9583
    * Z                         0:4e3505fd9583
 
 delete a remote bookmark
 
   $ hg book -d W
   $ hg push -B W ../a
   pushing to ../a
   searching for changes
   no changes found
   deleting remote bookmark W
   [1]
 
 push/pull name that doesn't exist
 
   $ hg push -B badname ../a
   pushing to ../a
   searching for changes
   no changes found
   bookmark badname does not exist on the local or remote repository!
   [2]
   $ hg pull -B anotherbadname ../a
   pulling from ../a
   abort: remote bookmark anotherbadname not found!
   [255]
 
 divergent bookmarks
 
   $ cd ../a
   $ echo c1 > f1
   $ hg ci -Am1
   adding f1
   $ hg book -f X
   $ hg book
    * X                         1:0d2164f0ce0d
      Y                         0:4e3505fd9583
      Z                         1:0d2164f0ce0d
 
   $ cd ../b
   $ hg up
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   updating bookmark foobar
   $ echo c2 > f2
   $ hg ci -Am2
   adding f2
   $ hg book -f X
   $ hg book
    * X                         1:9b140be10808
      Y                         0:4e3505fd9583
      Z                         0:4e3505fd9583
      foo                       -1:000000000000
      foobar                    1:9b140be10808
 
   $ hg pull --config paths.foo=../a foo
   pulling from $TESTTMP/a
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files (+1 heads)
   divergent bookmark X stored as X@foo
   updating bookmark Z
   (run 'hg heads' to see heads, 'hg merge' to merge)
   $ hg book
    * X                         1:9b140be10808
      X@foo                     2:0d2164f0ce0d
      Y                         0:4e3505fd9583
      Z                         2:0d2164f0ce0d
      foo                       -1:000000000000
      foobar                    1:9b140be10808
   $ hg push -f ../a
   pushing to ../a
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files (+1 heads)
   $ hg -R ../a book
    * X                         1:0d2164f0ce0d
      Y                         0:4e3505fd9583
      Z                         1:0d2164f0ce0d
 
+update a remote bookmark from a non-head to a head
+
+  $ hg up -q Y
+  $ echo c3 > f2
+  $ hg ci -Am3
+  adding f2
+  created new head
+  $ hg push ../a
+  pushing to ../a
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files (+1 heads)
+  updating bookmark Y
+  $ hg -R ../a book
+   * X                         1:0d2164f0ce0d
+     Y                         3:f6fc62dde3c0
+     Z                         1:0d2164f0ce0d
+
+diverging a remote bookmark fails
+
+  $ hg up -q 4e3505fd9583
+  $ echo c4 > f2
+  $ hg ci -Am4
+  adding f2
+  created new head
+  $ hg book -f Y
+  $ hg push ../a
+  pushing to ../a
+  searching for changes
+  abort: push creates new remote head 4efff6d98829!
+  (did you forget to merge? use push -f to force)
+  [255]
+  $ hg -R ../a book
+   * X                         1:0d2164f0ce0d
+     Y                         3:f6fc62dde3c0
+     Z                         1:0d2164f0ce0d
+
 hgweb
 
   $ cat <<EOF > .hg/hgrc
   > [web]
   > push_ssl = false
   > allow_push = *
   > EOF
 
   $ hg serve -p $HGPORT -d --pid-file=../hg.pid -E errors.log
   $ cat ../hg.pid >> $DAEMON_PIDS
   $ cd ../a
 
   $ hg debugpushkey http://localhost:$HGPORT/ namespaces 
   bookmarks	
   phases	
   namespaces	
   $ hg debugpushkey http://localhost:$HGPORT/ bookmarks
-  Y	4e3505fd95835d721066b76e75dbb8cc554d7f77
+  Y	4efff6d98829d9c824c621afd6e3f01865f5439f
   foobar	9b140be1080824d768c5a4691a564088eede71f9
   Z	0d2164f0ce0d8f1d6f94351eba04b794909be66c
   foo	0000000000000000000000000000000000000000
   X	9b140be1080824d768c5a4691a564088eede71f9
   $ hg out -B http://localhost:$HGPORT/
   comparing with http://localhost:$HGPORT/
   searching for changed bookmarks
   no changed bookmarks found
   [1]
   $ hg push -B Z http://localhost:$HGPORT/
   pushing to http://localhost:$HGPORT/
   searching for changes
   no changes found
   exporting bookmark Z
   [1]
   $ hg book -d Z
   $ hg in -B http://localhost:$HGPORT/
   comparing with http://localhost:$HGPORT/
   searching for changed bookmarks
      Z                         0d2164f0ce0d
      foo                       000000000000
      foobar                    9b140be10808
   $ hg pull -B Z http://localhost:$HGPORT/
   pulling from http://localhost:$HGPORT/
   no changes found
   adding remote bookmark foobar
   adding remote bookmark Z
   adding remote bookmark foo
   divergent bookmark X stored as X@1
   importing bookmark Z
   $ hg clone http://localhost:$HGPORT/ cloned-bookmarks
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
-  added 3 changesets with 3 changes to 3 files (+1 heads)
+  added 5 changesets with 5 changes to 3 files (+3 heads)
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg -R cloned-bookmarks bookmarks
      X                         1:9b140be10808
-     Y                         0:4e3505fd9583
+     Y                         4:4efff6d98829
      Z                         2:0d2164f0ce0d
      foo                       -1:000000000000
      foobar                    1:9b140be10808
 
   $ kill `cat ../hg.pid`