50
def __init__(self, source, mapping, pb=None):
54
def __init__(self, store, source, pb=None):
51
55
"""Create a new missing objects iterator.
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58
self.source = source
55
self._object_store = BazaarObjectStore(self.source, mapping)
57
self._sent_shas = set()
59
self._object_store = store
61
def import_revisions(self, revids):
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self._revids.update(revids)
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def import_revisions(self, revids, roundtrip):
64
"""Import a set of revisions into this git repository.
66
:param revids: Revision ids of revisions to import
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:param roundtrip: Whether to roundtrip bzr metadata
63
69
for i, revid in enumerate(revids):
65
71
self.pb.update("pushing revisions", i, len(revids))
66
git_commit = self.import_revision(revid)
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git_commit = self.import_revision(revid, roundtrip)
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yield (revid, git_commit)
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def need_sha(self, sha):
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if sha in self._sent_shas:
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(type, (fileid, revid)) = self._object_store._idmap.lookup_git_sha(sha)
73
assert type in ("blob", "tree")
74
if revid in self._revids:
75
# Not sent yet, and part of the set of revisions to send
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# Not changed in the revisions to send, so either not necessary
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# or already present remotely (as git doesn't do ghosts)
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def queue(self, sha, obj, path, ie=None, inv=None):
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self._pending.append((obj, path))
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self._sent_shas.add(sha)
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def import_revision(self, revid):
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"""Import the gist of a revision into this Git repository.
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def import_revision(self, revid, roundtrip):
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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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inv = self.source.get_inventory(revid)
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(sha, object) = self._object_store._get_ie_object_or_sha1(ie, inv)
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if ie.parent_id is None:
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if not self.need_sha(sha):
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self.queue(sha, object, inv.id2path(ie.file_id), ie, inv)
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if ie.kind == "directory":
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todo.extend(ie.children.values())
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assert tree_sha is not None
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commit = self._object_store._get_commit(revid, tree_sha)
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self.queue(commit.id, commit, None)
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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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for path, obj, ie in self._object_store._revision_to_objects(rev, tree,
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if obj.type_name == "commit":
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self._pending.append((obj, path))
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91
def __len__(self):
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92
return len(self._pending)
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94
def __iter__(self):
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for i, (object, path) in enumerate(self._pending):
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self.pb.update("writing pack objects", i, len(self))
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if isinstance(object, tuple):
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object = self._object_store._get_ie_object(*object)
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return iter(self._pending)
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98
class InterToGitRepository(InterRepository):
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113
"""See InterRepository.copy_content."""
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self.fetch(revision_id, pb, find_ghosts=False)
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def fetch(self, revision_id=None, pb=None, find_ghosts=False,
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raise NoPushSupport()
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def dfetch_refs(self, update_refs):
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"""Fetch non-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 names to old git shas. Should return a dictionary
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of new names to Bazaar revision ids.
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:return: revision id map, old refs dictionary and new refs dictionary
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raise NotImplementedError(self.dfetch_refs)
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def fetch_refs(self, update_refs):
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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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:return: old refs, new refs
134
raise NotImplementedError(self.fetch_refs)
143
137
class InterToLocalGitRepository(InterToGitRepository):
145
def missing_revisions(self, stop_revision):
146
if stop_revision is None:
147
raise NotImplementedError
138
"""InterBranch implementation between a Bazaar and a Git repository."""
140
def __init__(self, source, target):
141
super(InterToLocalGitRepository, self).__init__(source, target)
142
self.target_store = self.target._git.object_store
143
self.target_refs = self.target._git.refs
145
def _revision_needs_fetching(self, revid):
146
if revid == NULL_REVISION:
149
sha_id = self.source_store._lookup_revision_sha1(revid)
151
raise errors.NoSuchRevision(self.source, revid)
153
return (sha_id not in self.target_store)
154
except errors.NoSuchRevision:
158
def missing_revisions(self, stop_revisions):
159
"""Find the revisions that are missing from the target repository.
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:param stop_revisions: Revisions to check for
162
:return: sequence of missing revisions, in topological order
163
:raise: NoSuchRevision if the stop_revisions are not present in
167
graph = self.source.get_graph()
149
168
pb = ui.ui_factory.nested_progress_bar()
151
graph = self.source.get_graph()
152
for revid, _ in graph.iter_ancestry([stop_revision]):
170
for revid, _ in graph.iter_ancestry(stop_revisions):
171
assert type(revid) is str
153
172
pb.update("determining revisions to fetch", len(missing))
154
if not self.target.has_revision(revid):
173
if self._revision_needs_fetching(revid):
155
174
missing.append(revid)
156
return graph.iter_topo_order(missing)
160
def dfetch_refs(self, refs):
163
for name, revid in refs.iteritems():
164
newrevidmap, newgitidmap = self.dfetch(revid)
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revidmap.update(newrevidmap)
166
if revid in newgitidmap:
167
gitid = newgitidmap[revid]
169
gitid, _ = self.mapping.revision_id_bzr_to_foreign(revid)
170
self.target._git.refs[name] = gitid
171
new_refs[name] = gitid
172
return revidmap, new_refs
174
def dfetch(self, stop_revision=None):
177
return graph.iter_topo_order(missing)
179
def _get_target_bzr_refs(self):
180
"""Return a dictionary with references.
182
:return: Dictionary with reference names as keys and tuples
183
with Git SHA, Bazaar revid as values.
186
refs = self.target._git.get_refs()
187
for k, v in refs.iteritems():
189
(kind, (revid, treesha)) = self.source_store.lookup_git_sha(v)
192
bzr_refs[k] = (v, revid)
195
def fetch_refs(self, update_refs):
196
self.source.lock_read()
198
old_refs = self._get_target_bzr_refs()
199
new_refs = update_refs(old_refs)
200
# FIXME: Keep track of already looked up revid<->sha mappings
201
fetch_spec = PendingAncestryResult(
202
[revid for sha, revid in new_refs.values()], self.source)
203
self.fetch(fetch_spec=fetch_spec)
206
return old_refs, new_refs
208
def dfetch_refs(self, update_refs):
209
self.source.lock_read()
211
old_refs = self._get_target_bzr_refs()
212
new_refs = update_refs(old_refs)
213
revidmap, gitidmap = self.dfetch(new_refs.values())
214
for name, (gitid, revid) in new_refs.iteritems():
217
gitid = gitidmap[revid]
219
gitid = self.source_store._lookup_revision_sha1(revid)
220
self.target._git.refs[name] = gitid
221
new_refs[name] = (gitid, self.source_store.lookup_git_sha(gitid)[1][0])
224
return revidmap, old_refs, new_refs
226
def _get_missing_objects_iterator(self, pb):
227
return MissingObjectsIterator(self.source_store, self.source, pb)
229
def dfetch(self, stop_revisions):
175
230
"""Import the gist of the ancestry of a particular revision."""
178
233
self.source.lock_read()
180
todo = [revid for revid in self.missing_revisions(stop_revision) if revid != NULL_REVISION]
235
todo = list(self.missing_revisions([revid for sha, revid in stop_revisions]))
181
236
pb = ui.ui_factory.nested_progress_bar()
183
object_generator = MissingObjectsIterator(self.source, self.mapping, pb)
238
object_generator = self._get_missing_objects_iterator(pb)
184
239
for old_bzr_revid, git_commit in object_generator.import_revisions(
240
todo, roundtrip=False):
186
241
new_bzr_revid = self.mapping.revision_id_foreign_to_bzr(git_commit)
187
242
revidmap[old_bzr_revid] = new_bzr_revid
188
243
gitidmap[old_bzr_revid] = git_commit
189
self.target._git.object_store.add_objects(object_generator)
244
self.target_store.add_objects(object_generator)
193
248
self.source.unlock()
194
249
return revidmap, gitidmap
251
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
253
if revision_id is not None:
254
stop_revisions = [revision_id]
255
elif fetch_spec is not None:
256
stop_revisions = fetch_spec.heads
258
stop_revisions = self.source.all_revision_ids()
259
self.source.lock_read()
261
todo = list(self.missing_revisions(stop_revisions))
262
pb = ui.ui_factory.nested_progress_bar()
264
object_generator = self._get_missing_objects_iterator(pb)
265
for (revid, git_sha) in object_generator.import_revisions(
266
todo, roundtrip=True):
268
self.mapping.revision_id_bzr_to_foreign(revid)
269
except errors.InvalidRevisionId:
270
self.target_refs[self.mapping.revid_as_refname(revid)] = git_sha
271
self.target_store.add_objects(object_generator)
197
278
def is_compatible(source, target):
198
279
"""Be compatible with GitRepository."""
199
return (not isinstance(source, GitRepository) and
280
return (not isinstance(source, GitRepository) and
200
281
isinstance(target, LocalGitRepository))
203
284
class InterToRemoteGitRepository(InterToGitRepository):
205
def dfetch_refs(self, new_refs):
286
def dfetch_refs(self, update_refs):
206
287
"""Import the gist of the ancestry of a particular revision."""
208
def determine_wants(refs):
289
def determine_wants(old_refs):
210
for name, revid in new_refs.iteritems():
211
ret[name] = store._lookup_revision_sha1(revid)
291
self.old_refs = old_refs
292
self.new_refs = update_refs(self.old_refs)
293
for name, (gitid, revid) in self.new_refs.iteritems():
295
ret[name] = self.source_store._lookup_revision_sha1(revid)
213
299
self.source.lock_read()
215
store = BazaarObjectStore(self.source, self.mapping)
216
def generate_blob_contents(have, want):
217
return store.iter_shas(store.find_missing_objects(have, want))
218
301
new_refs = self.target.send_pack(determine_wants,
219
generate_blob_contents)
302
self.source_store.generate_lossy_pack_contents)
221
304
self.source.unlock()
222
return revidmap, new_refs
305
return revidmap, self.old_refs, self.new_refs
307
def fetch_refs(self, update_refs):
308
raise NoPushSupport()
225
311
def is_compatible(source, target):
226
312
"""Be compatible with GitRepository."""
227
return (not isinstance(source, GitRepository) and
313
return (not isinstance(source, GitRepository) and
228
314
isinstance(target, RemoteGitRepository))