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# Copyright (C) 2009-2018 Jelmer Vernooij <jelmer@jelmer.uk>
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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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# 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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# 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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"""InterRepository operations."""
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from __future__ import absolute_import
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from io import BytesIO
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from dulwich.errors import (
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from dulwich.object_store import (
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ObjectStoreGraphWalker,
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from dulwich.protocol import (
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from dulwich.refs import (
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from dulwich.walk import Walker
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from ..errors import (
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FetchLimitUnsupported,
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NoRoundtrippingSupport,
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from ..repository import (
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from ..revision import (
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from ..sixish import (
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DetermineWantsRecorder,
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from .mapping import (
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from .object_store import (
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MissingObjectsIterator,
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from .repository import (
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from .unpeel_map import (
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class InterToGitRepository(InterRepository):
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"""InterRepository that copies into a Git repository."""
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_matching_repo_format = GitRepositoryFormat()
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def __init__(self, source, target):
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super(InterToGitRepository, self).__init__(source, target)
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self.mapping = self.target.get_mapping()
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self.source_store = get_object_store(self.source, self.mapping)
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def _get_repo_format_to_test():
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def copy_content(self, revision_id=None, pb=None):
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"""See InterRepository.copy_content."""
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self.fetch(revision_id, pb, find_ghosts=False)
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def fetch_refs(self, update_refs, lossy, overwrite=False):
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"""Fetch possibly roundtripped revisions into the target repository
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:param update_refs: Generate refs to fetch. Receives dictionary
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with old refs (git shas), returns dictionary of new names to
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:param lossy: Whether to roundtrip
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:return: old refs, new refs
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raise NotImplementedError(self.fetch_refs)
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def search_missing_revision_ids(self,
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find_ghosts=True, revision_ids=None,
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if_present_ids=None, limit=None):
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if limit is not None:
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raise FetchLimitUnsupported(self)
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todo.extend(revision_ids)
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todo.extend(revision_ids)
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with self.source_store.lock_read():
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for revid in revision_ids:
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if revid == NULL_REVISION:
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git_sha = self.source_store._lookup_revision_sha1(revid)
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raise NoSuchRevision(revid, self.source)
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git_shas.append(git_sha)
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sha for sha in self.target.controldir.get_refs_container().as_dict().values()
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missing_revids = set()
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for (kind, type_data) in self.source_store.lookup_git_sha(
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missing_revids.add(type_data[0])
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return self.source.revision_ids_to_search_result(missing_revids)
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def _warn_slow(self):
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if not config.GlobalConfig().suppress_warning('slow_intervcs_push'):
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'Pushing from a Bazaar to a Git repository. '
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'For better performance, push into a Bazaar repository.')
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class InterToLocalGitRepository(InterToGitRepository):
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"""InterBranch implementation between a Bazaar and a Git repository."""
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def __init__(self, source, target):
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super(InterToLocalGitRepository, self).__init__(source, target)
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self.target_store = self.target.controldir._git.object_store
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self.target_refs = self.target.controldir._git.refs
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def _commit_needs_fetching(self, sha_id):
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return (sha_id not in self.target_store)
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except NoSuchRevision:
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def _revision_needs_fetching(self, sha_id, revid):
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if revid == NULL_REVISION:
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sha_id = self.source_store._lookup_revision_sha1(revid)
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return self._commit_needs_fetching(sha_id)
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def missing_revisions(self, stop_revisions):
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"""Find the revisions that are missing from the target repository.
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:param stop_revisions: Revisions to check for (tuples with
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:return: sequence of missing revisions, in topological order
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:raise: NoSuchRevision if the stop_revisions are not present in
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for (sha1, revid) in stop_revisions:
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if sha1 is not None and revid is not None:
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revid_sha_map[revid] = sha1
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stop_revids.append(revid)
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elif sha1 is not None:
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if self._commit_needs_fetching(sha1):
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for (kind, (revid, tree_sha, verifiers)) in self.source_store.lookup_git_sha(sha1):
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revid_sha_map[revid] = sha1
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stop_revids.append(revid)
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stop_revids.append(revid)
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graph = self.source.get_graph()
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pb = ui.ui_factory.nested_progress_bar()
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for revid in stop_revids:
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sha1 = revid_sha_map.get(revid)
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if (revid not in missing and
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self._revision_needs_fetching(sha1, revid)):
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new_stop_revids.append(revid)
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parent_map = graph.get_parent_map(new_stop_revids)
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for parent_revids in viewvalues(parent_map):
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stop_revids.update(parent_revids)
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pb.update("determining revisions to fetch", len(missing))
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return graph.iter_topo_order(missing)
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def _get_target_bzr_refs(self):
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"""Return a dictionary with references.
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:return: Dictionary with reference names as keys and tuples
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with Git SHA, Bazaar revid as values.
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for k in self.target._git.refs.allkeys():
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v = self.target._git.refs.read_ref(k)
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if not v.startswith(SYMREF):
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for (kind, type_data) in self.source_store.lookup_git_sha(
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if kind == "commit" and self.source.has_revision(
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bzr_refs[k] = (v, revid)
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def fetch_refs(self, update_refs, lossy, overwrite=False):
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with self.source_store.lock_read():
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old_refs = self._get_target_bzr_refs()
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new_refs = update_refs(old_refs)
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revidmap = self.fetch_objects(
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[(git_sha, bzr_revid)
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for (git_sha, bzr_revid) in new_refs.values()
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if git_sha is None or not git_sha.startswith(SYMREF)],
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for name, (gitid, revid) in viewitems(new_refs):
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gitid = revidmap[revid][0]
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gitid = self.source_store._lookup_revision_sha1(revid)
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if gitid.startswith(SYMREF):
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self.target_refs.set_symbolic_ref(
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name, gitid[len(SYMREF):])
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old_git_id = old_refs[name][0]
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self.target_refs.add_if_new(name, gitid)
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self.target_refs.set_if_equals(name, old_git_id, gitid)
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result_refs[name] = (gitid, revid if not lossy else self.mapping.revision_id_foreign_to_bzr(gitid))
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return revidmap, old_refs, result_refs
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def fetch_objects(self, revs, lossy, limit=None):
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if not lossy and not self.mapping.roundtripping:
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for git_sha, bzr_revid in revs:
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if (bzr_revid is not None and
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needs_roundtripping(self.source, bzr_revid)):
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raise NoPushSupport(self.source, self.target, self.mapping,
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with self.source_store.lock_read():
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todo = list(self.missing_revisions(revs))[:limit]
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pb = ui.ui_factory.nested_progress_bar()
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object_generator = MissingObjectsIterator(
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self.source_store, self.source, pb)
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for (old_revid, git_sha) in object_generator.import_revisions(
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new_revid = self.mapping.revision_id_foreign_to_bzr(
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new_revid = old_revid
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self.mapping.revision_id_bzr_to_foreign(old_revid)
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except InvalidRevisionId:
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refname = self.mapping.revid_as_refname(old_revid)
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self.target_refs[refname] = git_sha
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revidmap[old_revid] = (git_sha, new_revid)
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self.target_store.add_objects(object_generator)
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def fetch(self, revision_id=None, pb=None, find_ghosts=False,
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fetch_spec=None, mapped_refs=None):
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if mapped_refs is not None:
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stop_revisions = mapped_refs
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elif revision_id is not None:
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stop_revisions = [(None, revision_id)]
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elif fetch_spec is not None:
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recipe = fetch_spec.get_recipe()
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if recipe[0] in ("search", "proxy-search"):
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stop_revisions = [(None, revid) for revid in recipe[1]]
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raise AssertionError(
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"Unsupported search result type %s" % recipe[0])
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stop_revisions = [(None, revid)
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for revid in self.source.all_revision_ids()]
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self.fetch_objects(stop_revisions, lossy=False)
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except NoPushSupport:
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raise NoRoundtrippingSupport(self.source, self.target)
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def is_compatible(source, target):
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"""Be compatible with GitRepository."""
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return (not isinstance(source, GitRepository) and
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isinstance(target, LocalGitRepository))
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class InterToRemoteGitRepository(InterToGitRepository):
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def fetch_refs(self, update_refs, lossy, overwrite=False):
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"""Import the gist of the ancestry of a particular revision."""
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if not lossy and not self.mapping.roundtripping:
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raise NoPushSupport(self.source, self.target, self.mapping)
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unpeel_map = UnpeelMap.from_repository(self.source)
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def git_update_refs(old_refs):
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k: (v, None) for (k, v) in viewitems(old_refs)}
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new_refs = update_refs(self.old_refs)
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for name, (gitid, revid) in viewitems(new_refs):
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git_sha = self.source_store._lookup_revision_sha1(revid)
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gitid = unpeel_map.re_unpeel_tag(
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git_sha, old_refs.get(name))
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if remote_divergence(
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old_refs.get(name), gitid, self.source_store):
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raise DivergedBranches(self.source, self.target)
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with self.source_store.lock_read():
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new_refs = self.target.send_pack(
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git_update_refs, self.source_store.generate_lossy_pack_data)
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return revidmap, self.old_refs, new_refs
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def is_compatible(source, target):
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"""Be compatible with GitRepository."""
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return (not isinstance(source, GitRepository) and
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isinstance(target, RemoteGitRepository))
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class GitSearchResult(object):
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def __init__(self, start, exclude, keys):
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self._exclude = exclude
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def get_recipe(self):
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return ('search', self._start, self._exclude, len(self._keys))
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class InterFromGitRepository(InterRepository):
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_matching_repo_format = GitRepositoryFormat()
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def _target_has_shas(self, shas):
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raise NotImplementedError(self._target_has_shas)
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def get_determine_wants_heads(self, wants, include_tags=False):
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def determine_wants(refs):
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for k, v in viewitems(refs):
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if k.endswith(ANNOTATED_TAG_SUFFIX):
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unpeel_lookup[v] = refs[k[:-len(ANNOTATED_TAG_SUFFIX)]]
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potential = set([unpeel_lookup.get(w, w) for w in wants])
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for k, sha in viewitems(refs):
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if k.endswith(ANNOTATED_TAG_SUFFIX):
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return list(potential - self._target_has_shas(potential))
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return determine_wants
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def determine_wants_all(self, refs):
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raise NotImplementedError(self.determine_wants_all)
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def _get_repo_format_to_test():
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def copy_content(self, revision_id=None):
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"""See InterRepository.copy_content."""
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self.fetch(revision_id, find_ghosts=False)
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def search_missing_revision_ids(self,
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find_ghosts=True, revision_ids=None,
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if_present_ids=None, limit=None):
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if limit is not None:
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raise FetchLimitUnsupported(self)
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if revision_ids is None and if_present_ids is None:
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todo = set(self.source.all_revision_ids())
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if revision_ids is not None:
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for revid in revision_ids:
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if not self.source.has_revision(revid):
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raise NoSuchRevision(revid, self.source)
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todo.update(revision_ids)
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if if_present_ids is not None:
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todo.update(if_present_ids)
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result_set = todo.difference(self.target.all_revision_ids())
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result_parents = set(itertools.chain.from_iterable(viewvalues(
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self.source.get_graph().get_parent_map(result_set))))
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included_keys = result_set.intersection(result_parents)
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start_keys = result_set.difference(included_keys)
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exclude_keys = result_parents.difference(result_set)
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return GitSearchResult(start_keys, exclude_keys, result_set)
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class InterGitNonGitRepository(InterFromGitRepository):
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"""Base InterRepository that copies revisions from a Git into a non-Git
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def _target_has_shas(self, shas):
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revid = self.source.lookup_foreign_revision_id(sha)
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except NotCommitError:
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# Commit is definitely not present
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return set([revids[r] for r in self.target.has_revisions(revids)])
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def determine_wants_all(self, refs):
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for k, v in viewitems(refs):
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# For non-git target repositories, only worry about peeled
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potential.add(self.source.controldir.get_peeled(k) or v)
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return list(potential - self._target_has_shas(potential))
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def _warn_slow(self):
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if not config.GlobalConfig().suppress_warning('slow_intervcs_push'):
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'Fetching from Git to Bazaar repository. '
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'For better performance, fetch into a Git repository.')
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def fetch_objects(self, determine_wants, mapping, limit=None, lossy=False):
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"""Fetch objects from a remote server.
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:param determine_wants: determine_wants callback
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:param mapping: BzrGitMapping to use
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:param limit: Maximum number of commits to import.
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:return: Tuple with pack hint, last imported revision id and remote
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raise NotImplementedError(self.fetch_objects)
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def get_determine_wants_revids(self, revids, include_tags=False):
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for revid in set(revids):
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if self.target.has_revision(revid):
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git_sha, mapping = self.source.lookup_bzr_revision_id(revid)
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return self.get_determine_wants_heads(wants, include_tags=include_tags)
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def fetch(self, revision_id=None, find_ghosts=False,
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mapping=None, fetch_spec=None, include_tags=False):
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mapping = self.source.get_mapping()
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if revision_id is not None:
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interesting_heads = [revision_id]
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elif fetch_spec is not None:
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recipe = fetch_spec.get_recipe()
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if recipe[0] in ("search", "proxy-search"):
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interesting_heads = recipe[1]
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raise AssertionError("Unsupported search result type %s" %
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interesting_heads = None
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if interesting_heads is not None:
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determine_wants = self.get_determine_wants_revids(
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interesting_heads, include_tags=include_tags)
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determine_wants = self.determine_wants_all
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(pack_hint, _, remote_refs) = self.fetch_objects(determine_wants,
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if pack_hint is not None and self.target._format.pack_compresses:
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self.target.pack(hint=pack_hint)
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class InterRemoteGitNonGitRepository(InterGitNonGitRepository):
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"""InterRepository that copies revisions from a remote Git into a non-Git
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def get_target_heads(self):
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# FIXME: This should be more efficient
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all_revs = self.target.all_revision_ids()
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parent_map = self.target.get_parent_map(all_revs)
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for values in viewvalues(parent_map):
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all_parents.update(values)
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return set(all_revs) - all_parents
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def fetch_objects(self, determine_wants, mapping, limit=None, lossy=False):
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"""See `InterGitNonGitRepository`."""
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store = get_object_store(self.target, mapping)
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with store.lock_write():
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heads = self.get_target_heads()
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graph_walker = ObjectStoreGraphWalker(
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[store._lookup_revision_sha1(head) for head in heads],
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lambda sha: store[sha].parents)
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wants_recorder = DetermineWantsRecorder(determine_wants)
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pb = ui.ui_factory.nested_progress_bar()
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objects_iter = self.source.fetch_objects(
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wants_recorder, graph_walker, store.get_raw)
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trace.mutter("Importing %d new revisions",
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len(wants_recorder.wants))
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(pack_hint, last_rev) = import_git_objects(
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self.target, mapping, objects_iter, store,
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wants_recorder.wants, pb, limit)
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return (pack_hint, last_rev, wants_recorder.remote_refs)
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def is_compatible(source, target):
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"""Be compatible with GitRepository."""
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if not isinstance(source, RemoteGitRepository):
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if not target.supports_rich_root():
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if isinstance(target, GitRepository):
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if not getattr(target._format, "supports_full_versioned_files", True):
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class InterLocalGitNonGitRepository(InterGitNonGitRepository):
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"""InterRepository that copies revisions from a local Git into a non-Git
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def fetch_objects(self, determine_wants, mapping, limit=None, lossy=False):
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"""See `InterGitNonGitRepository`."""
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remote_refs = self.source.controldir.get_refs_container().as_dict()
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wants = determine_wants(remote_refs)
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pb = ui.ui_factory.nested_progress_bar()
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target_git_object_retriever = get_object_store(self.target, mapping)
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target_git_object_retriever.lock_write()
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(pack_hint, last_rev) = import_git_objects(
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self.target, mapping, self.source._git.object_store,
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target_git_object_retriever, wants, pb, limit)
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return (pack_hint, last_rev, remote_refs)
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target_git_object_retriever.unlock()
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def is_compatible(source, target):
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"""Be compatible with GitRepository."""
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if not isinstance(source, LocalGitRepository):
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if not target.supports_rich_root():
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if isinstance(target, GitRepository):
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if not getattr(target._format, "supports_full_versioned_files", True):
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class InterGitGitRepository(InterFromGitRepository):
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"""InterRepository that copies between Git repositories."""
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def fetch_refs(self, update_refs, lossy, overwrite=False):
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raise LossyPushToSameVCS(self.source, self.target)
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old_refs = self.target.controldir.get_refs_container()
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def determine_wants(heads):
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old_refs = dict([(k, (v, None))
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for (k, v) in viewitems(heads.as_dict())])
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new_refs = update_refs(old_refs)
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ref_changes.update(new_refs)
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return [sha1 for (sha1, bzr_revid) in viewvalues(new_refs)]
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self.fetch_objects(determine_wants, lossy=lossy)
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for k, (git_sha, bzr_revid) in viewitems(ref_changes):
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self.target._git.refs[k] = git_sha
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new_refs = self.target.controldir.get_refs_container()
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return None, old_refs, new_refs
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def fetch_objects(self, determine_wants, mapping=None, limit=None,
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raise NotImplementedError(self.fetch_objects)
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def _target_has_shas(self, shas):
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[sha for sha in shas if sha in self.target._git.object_store])
670
def fetch(self, revision_id=None, find_ghosts=False,
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mapping=None, fetch_spec=None, branches=None, limit=None,
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mapping = self.source.get_mapping()
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if revision_id is not None:
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elif fetch_spec is not None:
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recipe = fetch_spec.get_recipe()
679
if recipe[0] in ("search", "proxy-search"):
682
raise AssertionError(
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"Unsupported search result type %s" % recipe[0])
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if branches is not None:
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def determine_wants(refs):
688
for name, value in viewitems(refs):
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if value == ZERO_SHA:
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if name in branches or (include_tags and is_tag(name)):
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elif fetch_spec is None and revision_id is None:
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determine_wants = self.determine_wants_all
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determine_wants = self.get_determine_wants_revids(
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args, include_tags=include_tags)
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wants_recorder = DetermineWantsRecorder(determine_wants)
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self.fetch_objects(wants_recorder, mapping, limit=limit)
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return wants_recorder.remote_refs
704
def get_determine_wants_revids(self, revids, include_tags=False):
706
for revid in set(revids):
707
if revid == NULL_REVISION:
709
git_sha, mapping = self.source.lookup_bzr_revision_id(revid)
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return self.get_determine_wants_heads(wants, include_tags=include_tags)
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def determine_wants_all(self, refs):
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v for k, v in refs.items()
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if not v == ZERO_SHA and not k.endswith(ANNOTATED_TAG_SUFFIX)])
717
return list(potential - self._target_has_shas(potential))
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class InterLocalGitLocalGitRepository(InterGitGitRepository):
722
def fetch_objects(self, determine_wants, mapping=None, limit=None,
725
raise LossyPushToSameVCS(self.source, self.target)
726
if limit is not None:
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raise FetchLimitUnsupported(self)
728
from .remote import DefaultProgressReporter
729
pb = ui.ui_factory.nested_progress_bar()
730
progress = DefaultProgressReporter(pb).progress
732
refs = self.source._git.fetch(
733
self.target._git, determine_wants,
737
return (None, None, refs)
740
def is_compatible(source, target):
741
"""Be compatible with GitRepository."""
742
return (isinstance(source, LocalGitRepository) and
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isinstance(target, LocalGitRepository))
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class InterRemoteGitLocalGitRepository(InterGitGitRepository):
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def fetch_objects(self, determine_wants, mapping=None, limit=None,
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raise LossyPushToSameVCS(self.source, self.target)
752
if limit is not None:
753
raise FetchLimitUnsupported(self)
754
graphwalker = self.target._git.get_graph_walker()
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if (CAPABILITY_THIN_PACK in
756
self.source.controldir._client._fetch_capabilities):
757
# TODO(jelmer): Avoid reading entire file into memory and
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# only processing it after the whole file has been fetched.
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self.target._git.object_store.move_in_thin_pack(f)
769
f, commit, abort = self.target._git.object_store.add_pack()
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refs = self.source.controldir.fetch_pack(
772
determine_wants, graphwalker, f.write)
774
return (None, None, refs)
775
except BaseException:
780
def is_compatible(source, target):
781
"""Be compatible with GitRepository."""
782
return (isinstance(source, RemoteGitRepository) and
783
isinstance(target, LocalGitRepository))
added
removed
breezy/git/interrepo.py
