90
98
:param blob: A git blob
91
99
:return: Inventory delta for this file
93
file_id = mapping.generate_file_id(path)
101
if mapping.is_control_file(path):
103
if base_hexsha == hexsha and base_mode == mode:
104
# If nothing has changed since the base revision, we're done
106
file_id = lookup_file_id(path)
107
if stat.S_ISLNK(mode):
95
108
cls = InventoryLink
97
110
cls = InventoryFile
98
# We just have to hope this is indeed utf-8:
99
ie = cls(file_id, urlutils.basename(path).decode("utf-8"), parent_id)
100
ie.executable = executable
102
# See if this has changed at all
104
base_ie = base_inv[file_id]
109
base_sha = base_ie.text_id
112
base_sha = shagitmap.lookup_blob(file_id, base_ie.revision)
116
if (base_sha == hexsha and base_ie.executable == ie.executable
117
and base_ie.kind == ie.kind):
118
# If nothing has changed since the base revision, we're done
120
if base_sha == hexsha and base_ie.kind == ie.kind:
111
ie = cls(file_id, name.decode("utf-8"), parent_id)
112
if ie.kind == "file":
113
ie.executable = mode_is_executable(mode)
114
if base_hexsha == hexsha and mode_kind(base_mode) == mode_kind(mode):
115
base_ie = base_inv[base_inv.path2id(path)]
121
116
ie.text_size = base_ie.text_size
122
117
ie.text_sha1 = base_ie.text_sha1
123
ie.symlink_target = base_ie.symlink_target
124
ie.revision = base_ie.revision
118
if ie.kind == "symlink":
119
ie.symlink_target = base_ie.symlink_target
120
if ie.executable == base_ie.executable:
121
ie.revision = base_ie.revision
123
blob = lookup_object(hexsha)
126
125
blob = lookup_object(hexsha)
127
126
if ie.kind == "symlink":
128
128
ie.symlink_target = blob.data
132
ie.text_size = len(blob.data)
133
ie.text_sha1 = osutils.sha_string(blob.data)
130
ie.text_size = sum(imap(len, blob.chunked))
131
ie.text_sha1 = osutils.sha_strings(blob.chunked)
134
132
# Check what revision we should store
136
134
for pinv in parent_invs:
137
if pinv.revision_id == base_inv.revision_id:
146
if pie.text_sha1 == ie.text_sha1:
139
if (pie.text_sha1 == ie.text_sha1 and
140
pie.executable == ie.executable and
141
pie.symlink_target == ie.symlink_target):
147
142
# found a revision in one of the parents to use
148
143
ie.revision = pie.revision
150
parent_keys.append((file_id, pie.revision))
145
parent_key = (file_id, pie.revision)
146
if not parent_key in parent_keys:
147
parent_keys.append(parent_key)
151
148
if ie.revision is None:
152
149
# Need to store a new revision
153
150
ie.revision = revision_id
154
assert file_id is not None
155
151
assert ie.revision is not None
156
texts.insert_record_stream([FulltextContentFactory((file_id, ie.revision), tuple(parent_keys), ie.text_sha1, blob.data)])
157
shamap = [(hexsha, "blob", (ie.file_id, ie.revision))]
160
if file_id in base_inv:
161
old_path = base_inv.id2path(file_id)
152
if ie.kind == 'symlink':
155
chunks = blob.chunked
156
texts.insert_record_stream([
157
ChunkedContentFactory((file_id, ie.revision),
158
tuple(parent_keys), ie.text_sha1, chunks)])
160
if base_hexsha is not None:
161
old_path = path.decode("utf-8") # Renames are not supported yet
162
if stat.S_ISDIR(base_mode):
163
invdelta.extend(remove_disappeared_children(base_inv, old_path,
164
lookup_object(base_hexsha), [], lookup_object))
164
return ([(old_path, path, file_id, ie)], shamap)
167
def import_git_tree(texts, mapping, path, hexsha, base_inv, parent_id,
168
revision_id, parent_invs, shagitmap, lookup_object):
167
new_path = path.decode("utf-8")
168
invdelta.append((old_path, new_path, file_id, ie))
169
if base_hexsha != hexsha:
170
store_updater.add_object(blob, ie, path)
174
class SubmodulesRequireSubtrees(BzrError):
175
_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'."""
179
def import_git_submodule(texts, mapping, path, name, (base_hexsha, hexsha),
180
base_inv, parent_id, revision_id, parent_invs, lookup_object,
181
(base_mode, mode), store_updater, lookup_file_id):
182
if base_hexsha == hexsha and base_mode == mode:
184
file_id = lookup_file_id(path)
185
ie = TreeReference(file_id, name.decode("utf-8"), parent_id)
186
ie.revision = revision_id
187
if base_hexsha is None:
191
ie.reference_revision = mapping.revision_id_foreign_to_bzr(hexsha)
192
texts.insert_record_stream([
193
ChunkedContentFactory((file_id, ie.revision), (), None, [])])
194
invdelta = [(oldpath, path, file_id, ie)]
198
def remove_disappeared_children(base_inv, path, base_tree, existing_children,
200
"""Generate an inventory delta for removed children.
202
:param base_inv: Base inventory against which to generate the
204
:param path: Path to process (unicode)
205
:param base_tree: Git Tree base object
206
:param existing_children: Children that still exist
207
:param lookup_object: Lookup a git object by its SHA1
208
:return: Inventory delta, as list
210
assert type(path) is unicode
212
for name, mode, hexsha in base_tree.iteritems():
213
if name in existing_children:
215
c_path = posixpath.join(path, name.decode("utf-8"))
216
file_id = base_inv.path2id(c_path)
217
assert file_id is not None
218
ret.append((c_path, None, file_id, None))
219
if stat.S_ISDIR(mode):
220
ret.extend(remove_disappeared_children(
221
base_inv, c_path, lookup_object(hexsha), [], lookup_object))
225
def import_git_tree(texts, mapping, path, name, (base_hexsha, hexsha),
226
base_inv, parent_id, revision_id, parent_invs,
227
lookup_object, (base_mode, mode), store_updater,
228
lookup_file_id, allow_submodules=False):
169
229
"""Import a git tree object into a bzr repository.
171
231
:param texts: VersionedFiles object to add to
172
:param path: Path in the tree
232
:param path: Path in the tree (str)
233
:param name: Name of the tree (str)
173
234
:param tree: A git tree object
174
235
:param base_inv: Base inventory against which to return inventory delta
175
236
:return: Inventory delta for this subtree
238
assert type(path) is str
239
assert type(name) is str
240
if base_hexsha == hexsha and base_mode == mode:
241
# If nothing has changed since the base revision, we're done
178
file_id = mapping.generate_file_id(path)
244
file_id = lookup_file_id(path)
179
245
# We just have to hope this is indeed utf-8:
180
ie = InventoryDirectory(file_id, urlutils.basename(path.decode("utf-8")),
184
base_ie = base_inv[file_id]
186
# Newly appeared here
246
ie = InventoryDirectory(file_id, name.decode("utf-8"), parent_id)
247
tree = lookup_object(hexsha)
248
if base_hexsha is None:
250
old_path = None # Newly appeared here
252
base_tree = lookup_object(base_hexsha)
253
old_path = path.decode("utf-8") # Renames aren't supported yet
254
new_path = path.decode("utf-8")
255
if base_tree is None or type(base_tree) is not Tree:
188
256
ie.revision = revision_id
189
texts.add_lines((file_id, ie.revision), (), [])
190
invdelta.append((None, path, file_id, ie))
192
base_sha = base_ie.text_id
193
# See if this has changed at all
196
base_sha = shagitmap.lookup_tree(file_id, base_inv.revision_id)
200
if base_sha == hexsha:
201
# If nothing has changed since the base revision, we're done
257
invdelta.append((old_path, new_path, ie.file_id, ie))
258
texts.insert_record_stream([
259
ChunkedContentFactory((ie.file_id, ie.revision), (), None, [])])
203
260
# Remember for next time
204
261
existing_children = set()
207
tree = lookup_object(hexsha)
208
for mode, name, child_hexsha in tree.entries():
209
basename = name.decode("utf-8")
210
existing_children.add(basename)
211
child_path = osutils.pathjoin(path, name)
212
if stat.S_ISDIR(mode):
213
subinvdelta, grandchildmodes, subshamap = import_git_tree(texts,
214
mapping, child_path, child_hexsha, base_inv, file_id,
215
revision_id, parent_invs, shagitmap, lookup_object)
216
invdelta.extend(subinvdelta)
217
child_modes.update(grandchildmodes)
218
shamap.extend(subshamap)
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
mode_is_executable(mode), stat.S_ISLNK(mode))
224
invdelta.extend(subinvdelta)
225
shamap.extend(subshamap)
226
if mode not in (stat.S_IFDIR, DEFAULT_FILE_MODE,
263
for child_mode, name, child_hexsha in tree.entries():
264
existing_children.add(name)
265
child_path = posixpath.join(path, name)
266
if type(base_tree) is Tree:
268
child_base_mode, child_base_hexsha = base_tree[name]
270
child_base_hexsha = None
273
child_base_hexsha = None
275
if stat.S_ISDIR(child_mode):
276
subinvdelta, grandchildmodes = import_git_tree(texts, mapping,
277
child_path, name, (child_base_hexsha, child_hexsha), base_inv,
278
file_id, revision_id, parent_invs, lookup_object,
279
(child_base_mode, child_mode), store_updater, lookup_file_id,
280
allow_submodules=allow_submodules)
281
elif S_ISGITLINK(child_mode): # submodule
282
if not allow_submodules:
283
raise SubmodulesRequireSubtrees()
284
subinvdelta, grandchildmodes = import_git_submodule(texts, mapping,
285
child_path, name, (child_base_hexsha, child_hexsha), base_inv,
286
file_id, revision_id, parent_invs, lookup_object,
287
(child_base_mode, child_mode), store_updater, lookup_file_id)
289
subinvdelta = import_git_blob(texts, mapping, child_path, name,
290
(child_base_hexsha, child_hexsha), base_inv, file_id,
291
revision_id, parent_invs, lookup_object,
292
(child_base_mode, child_mode), store_updater, lookup_file_id)
294
child_modes.update(grandchildmodes)
295
invdelta.extend(subinvdelta)
296
if child_mode not in (stat.S_IFDIR, DEFAULT_FILE_MODE,
227
297
stat.S_IFLNK, DEFAULT_FILE_MODE|0111):
228
child_modes[child_path] = mode
298
child_modes[child_path] = child_mode
229
299
# 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,
300
if base_tree is not None and type(base_tree) is Tree:
301
invdelta.extend(remove_disappeared_children(base_inv, old_path,
302
base_tree, existing_children, lookup_object))
303
store_updater.add_object(tree, ie, path)
304
return invdelta, child_modes
307
def verify_commit_reconstruction(target_git_object_retriever, lookup_object,
308
o, rev, ret_tree, parent_trees, mapping, unusual_modes):
309
new_unusual_modes = mapping.export_unusual_file_modes(rev)
310
if new_unusual_modes != unusual_modes:
311
raise AssertionError("unusual modes don't match: %r != %r" % (
312
unusual_modes, new_unusual_modes))
313
# Verify that we can reconstruct the commit properly
314
rec_o = target_git_object_retriever._reconstruct_commit(rev, o.tree, True)
316
raise AssertionError("Reconstructed commit differs: %r != %r" % (
320
for path, obj, ie in _tree_to_objects(ret_tree, parent_trees,
321
target_git_object_retriever._cache.idmap, unusual_modes, mapping.BZR_DUMMY_FILE):
322
old_obj_id = tree_lookup_path(lookup_object, o.tree, path)[1]
324
if obj.id != old_obj_id:
325
diff.append((path, lookup_object(old_obj_id), obj))
326
for (path, old_obj, new_obj) in diff:
327
while (old_obj.type_name == "tree" and
328
new_obj.type_name == "tree" and
329
sorted(old_obj) == sorted(new_obj)):
331
if old_obj[name][0] != new_obj[name][0]:
332
raise AssertionError("Modes for %s differ: %o != %o" %
333
(path, old_obj[name][0], new_obj[name][0]))
334
if old_obj[name][1] != new_obj[name][1]:
335
# Found a differing child, delve deeper
336
path = posixpath.join(path, name)
337
old_obj = lookup_object(old_obj[name][1])
338
new_obj = new_objs[path]
340
raise AssertionError("objects differ for %s: %r != %r" % (path,
344
def import_git_commit(repo, mapping, head, lookup_object,
345
target_git_object_retriever, trees_cache):
346
o = lookup_object(head)
347
rev, roundtrip_revid, verifiers = mapping.import_commit(o,
348
lambda x: target_git_object_retriever.lookup_git_sha(x)[1][0])
349
# We have to do this here, since we have to walk the tree and
350
# we need to make sure to import the blobs / trees with the right
351
# path; this may involve adding them more than once.
352
parent_trees = trees_cache.revision_trees(rev.parent_ids)
353
if parent_trees == []:
354
base_inv = Inventory(root_id=None)
358
base_inv = parent_trees[0].inventory
359
base_tree = lookup_object(o.parents[0]).tree
360
base_mode = stat.S_IFDIR
361
store_updater = target_git_object_retriever._get_updater(rev)
362
fileid_map = mapping.get_fileid_map(lookup_object, o.tree)
363
inv_delta, unusual_modes = import_git_tree(repo.texts,
364
mapping, "", "", (base_tree, o.tree), base_inv,
365
None, rev.revision_id, [p.inventory for p in parent_trees],
366
lookup_object, (base_mode, stat.S_IFDIR), store_updater,
367
fileid_map.lookup_file_id,
368
allow_submodules=getattr(repo._format, "supports_tree_reference", False))
369
if unusual_modes != {}:
370
for path, mode in unusual_modes.iteritems():
371
warn_unusual_mode(rev.foreign_revid, path, mode)
372
mapping.import_unusual_file_modes(rev, unusual_modes)
374
basis_id = rev.parent_ids[0]
376
basis_id = NULL_REVISION
378
rev.inventory_sha1, inv = repo.add_inventory_by_delta(basis_id,
379
inv_delta, rev.revision_id, rev.parent_ids, base_inv)
380
# FIXME: Check verifiers
381
testament = StrictTestament3(rev, inv)
382
calculated_verifiers = { "testament3-sha1": testament.as_sha1() }
383
if roundtrip_revid is not None:
384
original_revid = rev.revision_id
385
rev.revision_id = roundtrip_revid
386
if calculated_verifiers != verifiers:
387
trace.mutter("Testament SHA1 %r for %r did not match %r.",
388
calculated_verifiers["testament3-sha1"],
389
rev.revision_id, verifiers["testament3-sha1"])
390
rev.revision_id = original_revid
391
store_updater.add_object(o, calculated_verifiers, None)
392
store_updater.finish()
393
ret_tree = RevisionTree(repo, inv, rev.revision_id)
394
trees_cache.add(ret_tree)
395
repo.add_revision(rev.revision_id, rev)
396
if "verify" in debug.debug_flags:
397
verify_commit_reconstruction(target_git_object_retriever,
398
lookup_object, o, rev, ret_tree, parent_trees, mapping,
402
def import_git_objects(repo, mapping, object_iter,
403
target_git_object_retriever, heads, pb=None, limit=None):
243
404
"""Import a set of git objects into a bzr repository.
245
406
:param repo: Target Bazaar repository
246
407
:param mapping: Mapping to use
247
408
:param object_iter: Iterator over Git objects.
409
:return: Tuple with pack hints and last imported revision id
249
411
def lookup_object(sha):
251
413
return object_iter[sha]
253
415
return target_git_object_retriever[sha]
254
# TODO: a more (memory-)efficient implementation of this
260
parent_invs_cache = LRUCache(50)
418
heads = list(set(heads))
419
trees_cache = LRUTreeCache(repo)
261
420
# Find and convert commit objects
263
422
if pb is not None:
271
430
if isinstance(o, Commit):
272
rev = mapping.import_commit(o)
273
if repo.has_revision(rev.revision_id):
431
rev, roundtrip_revid, verifiers = mapping.import_commit(o,
433
if (repo.has_revision(rev.revision_id) or
434
(roundtrip_revid and repo.has_revision(roundtrip_revid))):
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))
436
graph.append((o.id, o.parents))
280
437
heads.extend([p for p in o.parents if p not in checked])
281
438
elif isinstance(o, Tag):
282
heads.append(o.object[1])
439
if o.object[1] not in checked:
440
heads.append(o.object[1])
284
442
trace.warning("Unable to import head object %r" % o)
286
445
# Order the revisions
287
446
# 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:
448
revision_ids = topo_sort(graph)
450
if limit is not None:
451
revision_ids = revision_ids[:limit]
453
for offset in range(0, len(revision_ids), batch_size):
454
target_git_object_retriever.start_write_group()
456
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)
458
for i, head in enumerate(
459
revision_ids[offset:offset+batch_size]):
461
pb.update("fetching revisions", offset+i,
463
import_git_commit(repo, mapping, head, lookup_object,
464
target_git_object_retriever, trees_cache)
467
repo.abort_write_group()
470
hint = repo.commit_write_group()
472
pack_hints.extend(hint)
474
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()
477
target_git_object_retriever.commit_write_group()
478
return pack_hints, last_imported
332
481
class InterGitRepository(InterRepository):
361
516
interesting_heads = fetch_spec.heads
363
518
interesting_heads = None
365
519
def determine_wants(refs):
367
520
if interesting_heads is None:
368
521
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)
523
ret = [self.source.lookup_bzr_revision_id(revid)[0] for revid in interesting_heads if revid not in (None, NULL_REVISION)]
524
return [rev for rev in ret if not self.target.has_revision(self.source.lookup_foreign_revision_id(rev))]
525
(pack_hint, _, remote_refs) = self.fetch_objects(determine_wants, mapping, pb)
526
if pack_hint is not None and self.target._format.pack_compresses:
527
self.target.pack(hint=pack_hint)
531
_GIT_PROGRESS_RE = re.compile(r"(.*?): +(\d+)% \((\d+)/(\d+)\)")
532
def report_git_progress(pb, text):
533
text = text.rstrip("\r\n")
534
g = _GIT_PROGRESS_RE.match(text)
536
(text, pct, current, total) = g.groups()
537
pb.update(text, int(current), int(total))
539
pb.update(text, 0, 0)
542
class DetermineWantsRecorder(object):
544
def __init__(self, actual):
547
self.remote_refs = {}
549
def __call__(self, refs):
550
self.remote_refs = refs
551
self.wants = self.actual(refs)
376
555
class InterRemoteGitNonGitRepository(InterGitNonGitRepository):
377
"""InterRepository that copies revisions from a remote Git into a non-Git
556
"""InterRepository that copies revisions from a remote Git into a non-Git
380
def fetch_objects(self, determine_wants, mapping, pb=None):
559
def get_target_heads(self):
560
# FIXME: This should be more efficient
561
all_revs = self.target.all_revision_ids()
562
parent_map = self.target.get_parent_map(all_revs)
564
map(all_parents.update, parent_map.itervalues())
565
return set(all_revs) - all_parents
567
def fetch_objects(self, determine_wants, mapping, pb=None, limit=None):
568
"""See `InterGitNonGitRepository`."""
381
569
def progress(text):
382
pb.update("git: %s" % text.rstrip("\r\n"), 0, 0)
570
report_git_progress(pb, text)
383
571
store = BazaarObjectStore(self.target, mapping)
384
572
self.target.lock_write()
386
heads = self.target.get_graph().heads(self.target.all_revision_ids())
574
heads = self.get_target_heads()
387
575
graph_walker = store.get_graph_walker(
388
576
[store._lookup_revision_sha1(head) for head in heads])
577
wants_recorder = DetermineWantsRecorder(determine_wants)
391
def record_determine_wants(heads):
392
wants = determine_wants(heads)
393
recorded_wants.extend(wants)
398
581
create_pb = pb = ui.ui_factory.nested_progress_bar()
400
self.target.start_write_group()
402
objects_iter = self.source.fetch_objects(
403
record_determine_wants, graph_walker,
404
store.get_raw, progress)
405
import_git_objects(self.target, mapping, objects_iter,
406
store, recorded_wants, pb)
408
self.target.commit_write_group()
583
objects_iter = self.source.fetch_objects(
584
wants_recorder, graph_walker, store.get_raw,
586
(pack_hint, last_rev) = import_git_objects(self.target, mapping,
587
objects_iter, store, wants_recorder.wants, pb, limit)
588
return (pack_hint, last_rev, wants_recorder.remote_refs)
411
591
create_pb.finished()