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Viewing changes to breezy/git/push.py

  • Committer: Jelmer Vernooij
  • Date: 2020-04-05 19:11:34 UTC
  • mto: (7490.7.16 work)
  • mto: This revision was merged to the branch mainline in revision 7501.
  • Revision ID: jelmer@jelmer.uk-20200405191134-0aebh8ikiwygxma5
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breezy/git/push.py
 
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# Copyright (C) 2009-2018 Jelmer Vernooij <jelmer@jelmer.uk>
 
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#
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
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"""Basic push implementation."""
 
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from __future__ import absolute_import
 
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from ..push import (
 
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    PushResult,
 
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    )
 
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from .errors import (
 
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    GitSmartRemoteNotSupported,
 
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    )
 
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class GitPushResult(PushResult):
 
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    def _lookup_revno(self, revid):
 
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        from .branch import _quick_lookup_revno
 
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        try:
 
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            return _quick_lookup_revno(self.source_branch, self.target_branch,
 
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                                       revid)
 
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        except GitSmartRemoteNotSupported:
 
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            return None
 
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    @property
 
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    def old_revno(self):
 
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        return self._lookup_revno(self.old_revid)
 
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    @property
 
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    def new_revno(self):
 
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        return self._lookup_revno(self.new_revid)
 
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class MissingObjectsIterator(object):
 
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    """Iterate over git objects that are missing from a target repository.
 
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    """
 
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    def __init__(self, store, source, pb=None):
 
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        """Create a new missing objects iterator.
 
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        """
 
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        self.source = source
 
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        self._object_store = store
 
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        self._pending = []
 
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        self.pb = pb
 
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    def import_revisions(self, revids, lossy):
 
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        """Import a set of revisions into this git repository.
 
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        :param revids: Revision ids of revisions to import
 
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        :param lossy: Whether to not roundtrip bzr metadata
 
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        """
 
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        for i, revid in enumerate(revids):
 
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            if self.pb:
 
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                self.pb.update("pushing revisions", i, len(revids))
 
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            git_commit = self.import_revision(revid, lossy)
 
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            yield (revid, git_commit)
 
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    def import_revision(self, revid, lossy):
 
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        """Import a revision into this Git repository.
 
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        :param revid: Revision id of the revision
 
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        :param roundtrip: Whether to roundtrip bzr metadata
 
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        """
 
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        tree = self._object_store.tree_cache.revision_tree(revid)
 
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        rev = self.source.get_revision(revid)
 
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        commit = None
 
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        for path, obj in self._object_store._revision_to_objects(
 
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                rev, tree, lossy):
 
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            if obj.type_name == b"commit":
 
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                commit = obj
 
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            self._pending.append((obj, path))
 
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        if commit is None:
 
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            raise AssertionError("no commit object generated for revision %s" %
 
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                                 revid)
 
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        return commit.id
 
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    def __len__(self):
 
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        return len(self._pending)
 
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    def __iter__(self):
 
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        return iter(self._pending)
 
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class ObjectStoreParentsProvider(object):
 
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    def __init__(self, store):
 
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        self._store = store
 
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    def get_parent_map(self, shas):
 
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        ret = {}
 
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        for sha in shas:
 
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            if sha is None:
 
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                parents = []
 
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            else:
 
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                try:
 
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                    parents = self._store[sha].parents
 
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                except KeyError:
 
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                    parents = None
 
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            ret[sha] = parents
 
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        return ret
 
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def remote_divergence(old_sha, new_sha, store):
 
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    if old_sha is None:
 
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        return False
 
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    if not isinstance(old_sha, bytes):
 
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        raise TypeError(old_sha)
 
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    if not isinstance(new_sha, bytes):
 
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        raise TypeError(new_sha)
 
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    from breezy.graph import Graph
 
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    graph = Graph(ObjectStoreParentsProvider(store))
 
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    return not graph.is_ancestor(old_sha, new_sha)