89
95
:param blob: A git blob
90
96
:return: Inventory delta for this file
92
file_id = mapping.generate_file_id(path)
98
if mapping.is_control_file(path):
100
if base_hexsha == hexsha and base_mode == mode:
101
# If nothing has changed since the base revision, we're done
103
file_id = lookup_file_id(path)
104
if stat.S_ISLNK(mode):
94
105
cls = InventoryLink
96
107
cls = InventoryFile
97
# We just have to hope this is indeed utf-8:
98
ie = cls(file_id, urlutils.basename(path).decode("utf-8"), parent_id)
99
ie.executable = executable
101
# See if this has changed at all
103
base_ie = base_inv[file_id]
108
base_sha = base_ie.text_id
111
base_sha = shagitmap.lookup_blob(file_id, base_ie.revision)
115
if (base_sha == hexsha and base_ie.executable == ie.executable
116
and base_ie.kind == ie.kind):
117
# If nothing has changed since the base revision, we're done
119
if base_sha == hexsha and base_ie.kind == ie.kind:
108
ie = cls(file_id, name.decode("utf-8"), parent_id)
109
ie.executable = mode_is_executable(mode)
110
if base_hexsha == hexsha and mode_kind(base_mode) == mode_kind(mode):
111
base_ie = base_inv[base_inv.path2id(path)]
120
112
ie.text_size = base_ie.text_size
121
113
ie.text_sha1 = base_ie.text_sha1
122
114
ie.symlink_target = base_ie.symlink_target
123
ie.revision = base_ie.revision
115
if ie.executable == base_ie.executable:
116
ie.revision = base_ie.revision
118
blob = lookup_object(hexsha)
125
120
blob = lookup_object(hexsha)
126
121
if ie.kind == "symlink":
127
123
ie.symlink_target = blob.data
128
124
ie.text_size = None
129
125
ie.text_sha1 = None
131
ie.text_size = len(blob.data)
132
ie.text_sha1 = osutils.sha_string(blob.data)
127
ie.text_size = sum(imap(len, blob.chunked))
128
ie.text_sha1 = osutils.sha_strings(blob.chunked)
133
129
# Check what revision we should store
135
131
for pinv in parent_invs:
136
if pinv.revision_id == base_inv.revision_id:
145
if pie.text_sha1 == ie.text_sha1:
136
if (pie.text_sha1 == ie.text_sha1 and
137
pie.executable == ie.executable and
138
pie.symlink_target == ie.symlink_target):
146
139
# found a revision in one of the parents to use
147
140
ie.revision = pie.revision
149
parent_keys.append((file_id, pie.revision))
142
parent_key = (file_id, pie.revision)
143
if not parent_key in parent_keys:
144
parent_keys.append(parent_key)
150
145
if ie.revision is None:
151
146
# Need to store a new revision
152
147
ie.revision = revision_id
153
assert file_id is not None
154
148
assert ie.revision is not None
155
texts.insert_record_stream([FulltextContentFactory((file_id, ie.revision), tuple(parent_keys), ie.text_sha1, blob.data)])
156
shamap = [(hexsha, "blob", (ie.file_id, ie.revision))]
159
if file_id in base_inv:
160
old_path = base_inv.id2path(file_id)
149
if ie.kind == 'symlink':
152
chunks = blob.chunked
153
texts.insert_record_stream([
154
ChunkedContentFactory((file_id, ie.revision),
155
tuple(parent_keys), ie.text_sha1, chunks)])
157
if base_hexsha is not None:
158
old_path = path # Renames are not supported yet
159
if stat.S_ISDIR(base_mode):
160
invdelta.extend(remove_disappeared_children(base_inv, old_path,
161
lookup_object(base_hexsha), [], lookup_object))
163
return ([(old_path, path, file_id, ie)], shamap)
166
def import_git_tree(texts, mapping, path, hexsha, base_inv, parent_id,
167
revision_id, parent_invs, shagitmap, lookup_object):
164
invdelta.append((old_path, path, file_id, ie))
165
if base_hexsha != hexsha:
166
store_updater.add_object(blob, ie, path)
170
class SubmodulesRequireSubtrees(BzrError):
171
_fmt = """The repository you are fetching from contains submodules. To continue, upgrade your Bazaar repository to a format that supports nested trees, such as 'development-subtree'."""
175
def import_git_submodule(texts, mapping, path, name, (base_hexsha, hexsha),
176
base_inv, parent_id, revision_id, parent_invs, lookup_object,
177
(base_mode, mode), store_updater, lookup_file_id):
178
if base_hexsha == hexsha and base_mode == mode:
180
file_id = lookup_file_id(path)
181
ie = TreeReference(file_id, name.decode("utf-8"), parent_id)
182
ie.revision = revision_id
183
if base_hexsha is None:
187
ie.reference_revision = mapping.revision_id_foreign_to_bzr(hexsha)
188
texts.insert_record_stream([
189
ChunkedContentFactory((file_id, ie.revision), (), None, [])])
190
invdelta = [(oldpath, path, file_id, ie)]
194
def remove_disappeared_children(base_inv, path, base_tree, existing_children,
196
"""Generate an inventory delta for removed children.
198
:param base_inv: Base inventory against which to generate the
200
:param path: Path to process
201
:param base_tree: Git Tree base object
202
:param existing_children: Children that still exist
203
:param lookup_object: Lookup a git object by its SHA1
204
:return: Inventory delta, as list
207
for name, mode, hexsha in base_tree.iteritems():
208
if name in existing_children:
210
c_path = posixpath.join(path, name.decode("utf-8"))
211
file_id = base_inv.path2id(c_path)
212
assert file_id is not None
213
ret.append((c_path, None, file_id, None))
214
if stat.S_ISDIR(mode):
215
ret.extend(remove_disappeared_children(
216
base_inv, c_path, lookup_object(hexsha), [], lookup_object))
220
def import_git_tree(texts, mapping, path, name, (base_hexsha, hexsha),
221
base_inv, parent_id, revision_id, parent_invs,
222
lookup_object, (base_mode, mode), store_updater,
223
lookup_file_id, allow_submodules=False):
168
224
"""Import a git tree object into a bzr repository.
170
226
:param texts: VersionedFiles object to add to
173
229
:param base_inv: Base inventory against which to return inventory delta
174
230
:return: Inventory delta for this subtree
232
if base_hexsha == hexsha and base_mode == mode:
233
# If nothing has changed since the base revision, we're done
177
file_id = mapping.generate_file_id(path)
236
file_id = lookup_file_id(path)
178
237
# We just have to hope this is indeed utf-8:
179
ie = InventoryDirectory(file_id, urlutils.basename(path.decode("utf-8")),
183
base_ie = base_inv[file_id]
185
# Newly appeared here
238
ie = InventoryDirectory(file_id, name.decode("utf-8"), parent_id)
239
tree = lookup_object(hexsha)
240
if base_hexsha is None:
242
old_path = None # Newly appeared here
244
base_tree = lookup_object(base_hexsha)
245
old_path = path # Renames aren't supported yet
246
if base_tree is None or type(base_tree) is not Tree:
187
247
ie.revision = revision_id
188
texts.add_lines((file_id, ie.revision), (), [])
189
invdelta.append((None, path, file_id, ie))
191
base_sha = base_ie.text_id
192
# See if this has changed at all
195
base_sha = shagitmap.lookup_tree(file_id, base_inv.revision_id)
199
if base_sha == hexsha:
200
# If nothing has changed since the base revision, we're done
248
invdelta.append((old_path, path, ie.file_id, ie))
249
texts.insert_record_stream([
250
ChunkedContentFactory((ie.file_id, ie.revision), (), None, [])])
202
251
# Remember for next time
203
252
existing_children = set()
206
tree = lookup_object(hexsha)
207
for mode, name, child_hexsha in tree.entries():
208
basename = name.decode("utf-8")
209
existing_children.add(basename)
210
child_path = osutils.pathjoin(path, name)
211
if stat.S_ISDIR(mode):
212
subinvdelta, grandchildmodes, subshamap = import_git_tree(texts,
213
mapping, child_path, child_hexsha, base_inv, file_id,
214
revision_id, parent_invs, shagitmap, lookup_object)
215
invdelta.extend(subinvdelta)
216
child_modes.update(grandchildmodes)
217
shamap.extend(subshamap)
219
fs_mode = stat.S_IMODE(mode)
220
subinvdelta, subshamap = import_git_blob(texts, mapping,
221
child_path, child_hexsha, base_inv, file_id, revision_id,
222
parent_invs, shagitmap, lookup_object,
223
bool(fs_mode & 0111), stat.S_ISLNK(mode))
224
invdelta.extend(subinvdelta)
225
shamap.extend(subshamap)
226
if mode not in (stat.S_IFDIR, DEFAULT_FILE_MODE,
254
for child_mode, name, child_hexsha in tree.entries():
255
existing_children.add(name)
256
child_path = posixpath.join(path, name)
257
if type(base_tree) is Tree:
259
child_base_mode, child_base_hexsha = base_tree[name]
261
child_base_hexsha = None
264
child_base_hexsha = None
266
if stat.S_ISDIR(child_mode):
267
subinvdelta, grandchildmodes = import_git_tree(texts, mapping,
268
child_path, name, (child_base_hexsha, child_hexsha), base_inv,
269
file_id, revision_id, parent_invs, lookup_object,
270
(child_base_mode, child_mode), store_updater, lookup_file_id,
271
allow_submodules=allow_submodules)
272
elif S_ISGITLINK(child_mode): # submodule
273
if not allow_submodules:
274
raise SubmodulesRequireSubtrees()
275
subinvdelta, grandchildmodes = import_git_submodule(texts, mapping,
276
child_path, name, (child_base_hexsha, child_hexsha), base_inv,
277
file_id, revision_id, parent_invs, lookup_object,
278
(child_base_mode, child_mode), store_updater, lookup_file_id)
280
subinvdelta = import_git_blob(texts, mapping, child_path, name,
281
(child_base_hexsha, child_hexsha), base_inv, file_id,
282
revision_id, parent_invs, lookup_object,
283
(child_base_mode, child_mode), store_updater, lookup_file_id)
285
child_modes.update(grandchildmodes)
286
invdelta.extend(subinvdelta)
287
if child_mode not in (stat.S_IFDIR, DEFAULT_FILE_MODE,
227
288
stat.S_IFLNK, DEFAULT_FILE_MODE|0111):
228
child_modes[child_path] = mode
289
child_modes[child_path] = child_mode
229
290
# Remove any children that have disappeared
230
if base_ie is not None and base_ie.kind == 'directory':
231
deletable = [v for k,v in base_ie.children.iteritems() if k not in existing_children]
234
invdelta.append((base_inv.id2path(ie.file_id), None, ie.file_id, None))
235
if ie.kind == "directory":
236
deletable.extend(ie.children.values())
237
shamap.append((hexsha, "tree", (file_id, revision_id)))
238
return invdelta, child_modes, shamap
241
def import_git_objects(repo, mapping, object_iter, target_git_object_retriever,
291
if base_tree is not None and type(base_tree) is Tree:
292
invdelta.extend(remove_disappeared_children(base_inv, old_path,
293
base_tree, existing_children, lookup_object))
294
store_updater.add_object(tree, ie, path)
295
return invdelta, child_modes
298
def verify_commit_reconstruction(target_git_object_retriever, lookup_object,
299
o, rev, ret_tree, parent_trees, mapping, unusual_modes):
300
new_unusual_modes = mapping.export_unusual_file_modes(rev)
301
if new_unusual_modes != unusual_modes:
302
raise AssertionError("unusual modes don't match: %r != %r" % (
303
unusual_modes, new_unusual_modes))
304
# Verify that we can reconstruct the commit properly
305
rec_o = target_git_object_retriever._reconstruct_commit(rev, o.tree, True)
307
raise AssertionError("Reconstructed commit differs: %r != %r" % (
311
for path, obj, ie in _tree_to_objects(ret_tree, parent_trees,
312
target_git_object_retriever._cache.idmap, unusual_modes, mapping.BZR_DUMMY_FILE):
313
old_obj_id = tree_lookup_path(lookup_object, o.tree, path)[1]
315
if obj.id != old_obj_id:
316
diff.append((path, lookup_object(old_obj_id), obj))
317
for (path, old_obj, new_obj) in diff:
318
while (old_obj.type_name == "tree" and
319
new_obj.type_name == "tree" and
320
sorted(old_obj) == sorted(new_obj)):
322
if old_obj[name][0] != new_obj[name][0]:
323
raise AssertionError("Modes for %s differ: %o != %o" %
324
(path, old_obj[name][0], new_obj[name][0]))
325
if old_obj[name][1] != new_obj[name][1]:
326
# Found a differing child, delve deeper
327
path = posixpath.join(path, name)
328
old_obj = lookup_object(old_obj[name][1])
329
new_obj = new_objs[path]
331
raise AssertionError("objects differ for %s: %r != %r" % (path,
335
def import_git_commit(repo, mapping, head, lookup_object,
336
target_git_object_retriever, trees_cache):
337
o = lookup_object(head)
338
rev = mapping.import_commit(o,
339
lambda x: target_git_object_retriever.lookup_git_sha(x)[1][0])
340
# We have to do this here, since we have to walk the tree and
341
# we need to make sure to import the blobs / trees with the right
342
# path; this may involve adding them more than once.
343
parent_trees = trees_cache.revision_trees(rev.parent_ids)
344
if parent_trees == []:
345
base_inv = Inventory(root_id=None)
349
base_inv = parent_trees[0].inventory
350
base_tree = lookup_object(o.parents[0]).tree
351
base_mode = stat.S_IFDIR
352
store_updater = target_git_object_retriever._get_updater(rev)
353
store_updater.add_object(o, None, None)
354
lookup_file_id = mapping.get_fileid_map(lookup_object, o.tree).lookup_file_id
355
inv_delta, unusual_modes = import_git_tree(repo.texts,
356
mapping, "", u"", (base_tree, o.tree), base_inv,
357
None, rev.revision_id, [p.inventory for p in parent_trees],
358
lookup_object, (base_mode, stat.S_IFDIR), store_updater,
360
allow_submodules=getattr(repo._format, "supports_tree_reference", False))
361
store_updater.finish()
362
if unusual_modes != {}:
363
for path, mode in unusual_modes.iteritems():
364
warn_unusual_mode(rev.foreign_revid, path, mode)
365
mapping.import_unusual_file_modes(rev, unusual_modes)
367
basis_id = rev.parent_ids[0]
369
basis_id = NULL_REVISION
371
rev.inventory_sha1, inv = repo.add_inventory_by_delta(basis_id,
372
inv_delta, rev.revision_id, rev.parent_ids,
374
ret_tree = RevisionTree(repo, inv, rev.revision_id)
375
trees_cache.add(ret_tree)
376
repo.add_revision(rev.revision_id, rev)
377
if "verify" in debug.debug_flags:
378
verify_commit_reconstruction(target_git_object_retriever,
379
lookup_object, o, rev, ret_tree, parent_trees, mapping,
383
def import_git_objects(repo, mapping, object_iter,
384
target_git_object_retriever, heads, pb=None, limit=None):
243
385
"""Import a set of git objects into a bzr repository.
245
387
:param repo: Target Bazaar repository
246
388
:param mapping: Mapping to use
247
389
:param object_iter: Iterator over Git objects.
390
:return: Tuple with pack hints and last imported revision id
249
392
def lookup_object(sha):
251
394
return object_iter[sha]
253
396
return target_git_object_retriever[sha]
254
# TODO: a more (memory-)efficient implementation of this
260
parent_invs_cache = LRUCache(50)
399
heads = list(set(heads))
400
trees_cache = LRUTreeCache(repo)
261
401
# Find and convert commit objects
263
403
if pb is not None:
271
411
if isinstance(o, Commit):
272
rev = mapping.import_commit(o)
412
rev = mapping.import_commit(o, lambda x: None)
273
413
if repo.has_revision(rev.revision_id):
275
root_trees[rev.revision_id] = o.tree
276
revisions[rev.revision_id] = rev
277
graph.append((rev.revision_id, rev.parent_ids))
278
target_git_object_retriever._idmap.add_entry(o.id, "commit",
279
(rev.revision_id, o.tree))
415
graph.append((o.id, o.parents))
280
416
heads.extend([p for p in o.parents if p not in checked])
281
417
elif isinstance(o, Tag):
282
heads.append(o.object[1])
418
if o.object[1] not in checked:
419
heads.append(o.object[1])
284
421
trace.warning("Unable to import head object %r" % o)
286
424
# Order the revisions
287
425
# Create the inventory objects
288
for i, revid in enumerate(topo_sort(graph)):
290
pb.update("fetching revisions", i, len(graph))
291
rev = revisions[revid]
292
# We have to do this here, since we have to walk the tree and
293
# we need to make sure to import the blobs / trees with the right
294
# path; this may involve adding them more than once.
296
for parent_id in rev.parent_ids:
427
revision_ids = topo_sort(graph)
429
if limit is not None:
430
revision_ids = revision_ids[:limit]
432
for offset in range(0, len(revision_ids), batch_size):
433
target_git_object_retriever.start_write_group()
435
repo.start_write_group()
298
parent_invs.append(parent_invs_cache[parent_id])
300
parent_inv = repo.get_inventory(parent_id)
301
parent_invs.append(parent_inv)
302
parent_invs_cache[parent_id] = parent_inv
303
if parent_invs == []:
304
base_inv = Inventory(root_id=None)
437
for i, head in enumerate(
438
revision_ids[offset:offset+batch_size]):
440
pb.update("fetching revisions", offset+i,
442
import_git_commit(repo, mapping, head, lookup_object,
443
target_git_object_retriever, trees_cache)
446
repo.abort_write_group()
449
hint = repo.commit_write_group()
451
pack_hints.extend(hint)
453
target_git_object_retriever.abort_write_group()
306
base_inv = parent_invs[0]
307
inv_delta, unusual_modes, shamap = import_git_tree(repo.texts,
308
mapping, "", root_trees[revid], base_inv, None, revid,
309
parent_invs, target_git_object_retriever._idmap, lookup_object)
310
target_git_object_retriever._idmap.add_entries(shamap)
311
if unusual_modes != {}:
312
for path, mode in unusual_modes.iteritems():
313
warn_unusual_mode(rev.foreign_revid, path, mode)
315
basis_id = rev.parent_ids[0]
317
basis_id = NULL_REVISION
318
rev.inventory_sha1, inv = repo.add_inventory_by_delta(basis_id,
319
inv_delta, rev.revision_id, rev.parent_ids)
320
parent_invs_cache[rev.revision_id] = inv
321
repo.add_revision(rev.revision_id, rev)
322
if "verify" in debug.debug_flags:
323
objs = inventory_to_tree_and_blobs(inv, repo.texts, mapping)
324
for sha1, newobj, path in objs:
325
assert path is not None
326
oldobj = tree_lookup_path(lookup_object, root_trees[revid], path)
327
assert oldobj == newobj, "%r != %r in %s" % (oldobj, newobj, path)
329
target_git_object_retriever._idmap.commit()
456
target_git_object_retriever.commit_write_group()
457
return pack_hints, last_imported
332
460
class InterGitRepository(InterRepository):
367
490
if interesting_heads is None:
368
491
ret = [sha for (ref, sha) in refs.iteritems() if not ref.endswith("^{}")]
370
ret = [mapping.revision_id_bzr_to_foreign(revid)[0] for revid in interesting_heads if revid not in (None, NULL_REVISION)]
371
return [rev for rev in ret if not self.target.has_revision(mapping.revision_id_foreign_to_bzr(rev))]
372
self.fetch_objects(determine_wants, mapping, pb)
493
ret = [self.source.lookup_bzr_revision_id(revid)[0] for revid in interesting_heads if revid not in (None, NULL_REVISION)]
494
return [rev for rev in ret if not self.target.has_revision(self.source.lookup_foreign_revision_id(rev))]
495
(pack_hint, _) = self.fetch_objects(determine_wants, mapping, pb)
496
if pack_hint is not None and self.target._format.pack_compresses:
497
self.target.pack(hint=pack_hint)
373
498
return self._refs
501
_GIT_PROGRESS_RE = re.compile(r"(.*?): +(\d+)% \((\d+)/(\d+)\)")
502
def report_git_progress(pb, text):
503
text = text.rstrip("\r\n")
504
g = _GIT_PROGRESS_RE.match(text)
506
(text, pct, current, total) = g.groups()
507
pb.update(text, int(current), int(total))
509
pb.update(text, 0, 0)
376
512
class InterRemoteGitNonGitRepository(InterGitNonGitRepository):
377
"""InterRepository that copies revisions from a remote Git into a non-Git
513
"""InterRepository that copies revisions from a remote Git into a non-Git
380
def fetch_objects(self, determine_wants, mapping, pb=None):
516
def get_target_heads(self):
517
# FIXME: This should be more efficient
518
all_revs = self.target.all_revision_ids()
519
parent_map = self.target.get_parent_map(all_revs)
521
map(all_parents.update, parent_map.itervalues())
522
return set(all_revs) - all_parents
524
def fetch_objects(self, determine_wants, mapping, pb=None, limit=None):
381
525
def progress(text):
382
pb.update("git: %s" % text.rstrip("\r\n"), 0, 0)
526
report_git_progress(pb, text)
383
527
store = BazaarObjectStore(self.target, mapping)
384
528
self.target.lock_write()
386
heads = self.target.get_graph().heads(self.target.all_revision_ids())
530
heads = self.get_target_heads()
387
531
graph_walker = store.get_graph_walker(
388
532
[store._lookup_revision_sha1(head) for head in heads])
389
533
recorded_wants = []
451
588
def is_compatible(source, target):
452
589
"""Be compatible with GitRepository."""
453
# FIXME: Also check target uses VersionedFile
454
return (isinstance(source, LocalGitRepository) and
590
return (isinstance(source, LocalGitRepository) and
455
591
target.supports_rich_root() and
456
not isinstance(target, GitRepository))
592
not isinstance(target, GitRepository) and
593
target.texts is not None)
459
596
class InterGitGitRepository(InterGitRepository):
460
597
"""InterRepository that copies between Git repositories."""
462
def fetch_refs(self, revision_id=None, pb=None, find_ghosts=False,
599
def fetch_objects(self, determine_wants, mapping, pb=None):
601
trace.note("git: %s", text)
602
graphwalker = self.target._git.get_graph_walker()
603
if (isinstance(self.source, LocalGitRepository) and
604
isinstance(self.target, LocalGitRepository)):
605
return self.source._git.fetch(self.target._git, determine_wants,
607
elif (isinstance(self.source, LocalGitRepository) and
608
isinstance(self.target, RemoteGitRepository)):
609
raise NotImplementedError
610
elif (isinstance(self.source, RemoteGitRepository) and
611
isinstance(self.target, LocalGitRepository)):
612
f, commit = self.target._git.object_store.add_thin_pack()
614
refs = self.source._git.fetch_pack(determine_wants,
615
graphwalker, f.write, progress)
624
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
463
625
mapping=None, fetch_spec=None, branches=None):
464
626
if mapping is None:
465
627
mapping = self.source.get_mapping()
467
trace.info("git: %s", text)
468
628
r = self.target._git
469
629
if revision_id is not None:
470
630
args = [mapping.revision_id_bzr_to_foreign(revision_id)[0]]