[PATCH 09 of 14] localrepo: add shallow awareness

[Nicolas Dumazet]

On Fri, 16 Jul 2010 12:45:17 +0530
Vishakh H <vsh426 at gmail.com> wrote:

> # HG changeset patch
> # User Vishakh H <vsh426 at gmail.com>
> # Date 1279263210 -19800
> # Node ID 6235071ccd5e7973389a890abb64a88c6d8ccb27
> # Parent  0218b69c65e2014af11f287cac005ffd206d45c5
> localrepo: add shallow awareness
> 
> when a shallow repo is created we store the shallowroot in shallow file
> under .hg. when the repo is instantiated it reads the file find shallowroot.

"to find shallowroot" I guess?

> the shallow root is passed to the changelog so it can keep track of all
> nodes available in repo and create revlogs with shallow flag.
> 
> diff --git a/mercurial/localrepo.py b/mercurial/localrepo.py
> --- a/mercurial/localrepo.py
> +++ b/mercurial/localrepo.py
> @@ -23,7 +23,7 @@
>      capabilities = set(('lookup', 'changegroupsubset', 'branchmap', 'pushkey'))
>      supported = set('revlogv1 store fncache shared'.split())
>  
> -    def __init__(self, baseui, path=None, create=0):
> +    def __init__(self, baseui, path=None, create=False, shallow=None):

So what kind of data will be passed in "shallow"?
Is it fundamentally different from what you call elsewhere "shallowroot"?
If not, you might want to use the name everywhere.

-Nicolas.

>          repo.repository.__init__(self)
>          self.root = os.path.realpath(util.expandpath(path))
>          self.path = os.path.join(self.root, ".hg")
> @@ -32,6 +32,7 @@
>          self.wopener = util.opener(self.root)
>          self.baseui = baseui
>          self.ui = baseui.copy()
> +        self._shallowroot = shallow
>  
>          try:
>              self.ui.readconfig(self.join("hgrc"), self.root)
> @@ -59,6 +60,10 @@
>                  for r in requirements:
>                      reqfile.write("%s\n" % r)
>                  reqfile.close()
> +                if shallow is not None:
> +                    shallowfile = self.opener("shallow", "w")
> +                    shallowfile.write(shallow)
> +                    shallowfile.close()
>              else:
>                  raise error.RepoError(_("repository %s not found") % path)
>          elif create:
> @@ -68,6 +73,7 @@
>              requirements = set()
>              try:
>                  requirements = set(self.opener("requires").read().splitlines())
> +                self._shallowroot = self.opener("shallow").read()
>              except IOError, inst:
>                  if inst.errno != errno.ENOENT:
>                      raise
> @@ -109,7 +115,7 @@
>  
>      @propertycache
>      def changelog(self):
> -        c = changelog.changelog(self.sopener)
> +        c = changelog.changelog(self.sopener, self._shallowroot)
>          if 'HG_PENDING' in os.environ:
>              p = os.environ['HG_PENDING']
>              if p.startswith(self.root):
> @@ -1203,6 +1209,7 @@
>                      raise util.Abort(_("Partial pull cannot be done because "
>                                         "other repository doesn't support "
>                                         "changegroupsubset."))
> +                shallowroot = shallowroot or self._shallowroot
>                  cg = remote.changegroupsubset(fetch, heads, 'pull',
>                                                shallowroot=shallowroot)
>              return self.addchangegroup(cg, 'pull', remote.url(), lock=lock)
> @@ -1869,8 +1876,8 @@
>              util.rename(src, dest)
>      return a
>  
> -def instance(ui, path, create):
> -    return localrepository(ui, util.drop_scheme('file', path), create)
> +def instance(ui, path, create, shallow):
> +    return localrepository(ui, util.drop_scheme('file', path), create, shallow)
>  
>  def islocal(path):
>      return True
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-- 
Nicolas Dumazet — NicDumZ