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# Copyright (C) 2009 Jelmer Vernooij <jelmer@samba.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Push implementation that simply prints message saying push is not supported."""
from bzrlib import (
ui,
)
from bzrlib.repository import (
InterRepository,
)
from bzrlib.revision import (
NULL_REVISION,
)
from bzrlib.plugins.git.converter import (
BazaarObjectStore,
)
from bzrlib.plugins.git.errors import (
NoPushSupport,
)
from bzrlib.plugins.git.mapping import (
inventory_to_tree_and_blobs,
revision_to_commit,
)
from bzrlib.plugins.git.repository import (
GitRepository,
GitRepositoryFormat,
)
class MissingObjectsIterator(object):
"""Iterate over git objects that are missing from a target repository.
"""
def __init__(self, source, mapping, pb=None):
"""Create a new missing objects iterator.
"""
self.source = source
self._object_store = BazaarObjectStore(self.source, mapping)
self._revids = set()
self._sent_shas = set()
self._pending = []
self.pb = pb
def import_revisions(self, revids):
self._revids.update(revids)
for i, revid in enumerate(revids):
if self.pb:
self.pb.update("pushing revisions", i, len(revids))
git_commit = self.import_revision(revid)
yield (revid, git_commit)
def need_sha(self, sha):
if sha in self._sent_shas:
return False
(type, (fileid, revid)) = self._object_store._idmap.lookup_git_sha(sha)
assert type in ("blob", "tree")
if revid in self._revids:
# Not sent yet, and part of the set of revisions to send
return True
# Not changed in the revisions to send, so either not necessary
# or already present remotely (as git doesn't do ghosts)
return False
def queue(self, sha, obj, path, ie=None, inv=None):
if obj is None:
obj = (ie, inv)
self._pending.append((obj, path))
self._sent_shas.add(sha)
def import_revision(self, revid):
"""Import the gist of a revision into this Git repository.
"""
inv = self.source.get_inventory(revid)
todo = [inv.root]
tree_sha = None
while todo:
ie = todo.pop()
(sha, object) = self._object_store._get_ie_object_or_sha1(ie, inv)
if ie.parent_id is None:
tree_sha = sha
if not self.need_sha(sha):
continue
self.queue(sha, object, inv.id2path(ie.file_id), ie, inv)
if ie.kind == "directory":
todo.extend(ie.children.values())
assert tree_sha is not None
commit = self._object_store._get_commit(revid, tree_sha)
self.queue(commit.id, commit, None)
return commit.id
def __len__(self):
return len(self._pending)
def __iter__(self):
for i, (object, path) in enumerate(self._pending):
if self.pb:
self.pb.update("writing pack objects", i, len(self))
if isinstance(object, tuple):
object = self._object_store._get_ie_object(*object)
yield (object, path)
class InterToGitRepository(InterRepository):
"""InterRepository that copies into a Git repository."""
_matching_repo_format = GitRepositoryFormat()
@staticmethod
def _get_repo_format_to_test():
return None
def copy_content(self, revision_id=None, pb=None):
"""See InterRepository.copy_content."""
self.fetch(revision_id, pb, find_ghosts=False)
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
fetch_spec=None):
raise NoPushSupport()
def missing_revisions(self, stop_revision):
if stop_revision is None:
raise NotImplementedError
missing = []
pb = ui.ui_factory.nested_progress_bar()
try:
graph = self.source.get_graph()
for revid, _ in graph.iter_ancestry([stop_revision]):
pb.update("determining revisions to fetch", len(missing))
if not self.target.has_revision(revid):
missing.append(revid)
return graph.iter_topo_order(missing)
finally:
pb.finished()
def dfetch(self, stop_revision=None):
"""Import the gist of the ancestry of a particular revision."""
revidmap = {}
mapping = self.target.get_mapping()
self.source.lock_read()
try:
todo = [revid for revid in self.missing_revisions(stop_revision) if revid != NULL_REVISION]
pb = ui.ui_factory.nested_progress_bar()
try:
object_generator = MissingObjectsIterator(self.source, mapping, pb)
for old_bzr_revid, git_commit in object_generator.import_revisions(
todo):
new_bzr_revid = mapping.revision_id_foreign_to_bzr(git_commit)
revidmap[old_bzr_revid] = new_bzr_revid
self.target._git.object_store.add_objects(object_generator)
finally:
pb.finished()
finally:
self.source.unlock()
return revidmap
@staticmethod
def is_compatible(source, target):
"""Be compatible with GitRepository."""
return (not isinstance(source, GitRepository) and
isinstance(target, GitRepository))
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