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)
173
def import_git_submodule(texts, mapping, path, hexsha, base_inv, base_ie,
174
parent_id, revision_id, parent_invs, shagitmap, lookup_object):
175
file_id = mapping.generate_file_id(path)
176
ie = TreeReference(file_id, urlutils.basename(path.decode("utf-8")),
186
178
ie.revision = revision_id
187
if base_hexsha is None:
183
if base_ie.kind == ie.kind and base_ie.reference_revision == ie.reference_revision:
184
ie.revision = base_ie.revision
191
185
ie.reference_revision = mapping.revision_id_foreign_to_bzr(hexsha)
192
texts.insert_record_stream([
193
ChunkedContentFactory((file_id, ie.revision), (), None, [])])
186
texts.insert_record_stream([FulltextContentFactory((file_id, ie.revision), (), None, "")])
194
187
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
188
return invdelta, {}, {}
191
def remove_disappeared_children(path, base_children, existing_children):
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))
193
deletable = [(osutils.pathjoin(path, k), v) for k,v in base_children.iteritems() if k not in existing_children]
195
(path, ie) = deletable.pop()
196
ret.append((path, None, ie.file_id, None))
197
if ie.kind == "directory":
198
for name, child_ie in ie.children.iteritems():
199
deletable.append((osutils.pathjoin(path, name), child_ie))
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):
203
def import_git_tree(texts, mapping, path, hexsha, base_inv, base_ie, parent_id,
204
revision_id, parent_invs, shagitmap, lookup_object, allow_submodules=False):
229
205
"""Import a git tree object into a bzr repository.
231
207
:param texts: VersionedFiles object to add to
232
:param path: Path in the tree (str)
233
:param name: Name of the tree (str)
208
:param path: Path in the tree
234
209
:param tree: A git tree object
235
210
:param base_inv: Base inventory against which to return inventory delta
236
211
: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
244
file_id = lookup_file_id(path)
214
file_id = mapping.generate_file_id(path)
245
215
# We just have to hope this is indeed utf-8:
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:
216
ie = InventoryDirectory(file_id, urlutils.basename(path.decode("utf-8")),
219
# Newly appeared here
256
220
ie.revision = revision_id
257
invdelta.append((old_path, new_path, ie.file_id, ie))
258
texts.insert_record_stream([
259
ChunkedContentFactory((ie.file_id, ie.revision), (), None, [])])
221
texts.insert_record_stream([FulltextContentFactory((file_id, ie.revision), (), None, "")])
222
invdelta.append((None, path, file_id, ie))
224
# See if this has changed at all
226
base_sha = shagitmap.lookup_tree(file_id, base_inv.revision_id)
230
if base_sha == hexsha:
231
# If nothing has changed since the base revision, we're done
233
if base_ie.kind != "directory":
234
ie.revision = revision_id
235
texts.insert_record_stream([FulltextContentFactory((ie.file_id, ie.revision), (), None, "")])
236
invdelta.append((base_inv.id2path(ie.file_id), path, ie.file_id, ie))
237
if base_ie is not None and base_ie.kind == "directory":
238
base_children = base_ie.children
260
241
# Remember for next time
261
242
existing_children = set()
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
245
tree = lookup_object(hexsha)
246
for mode, name, child_hexsha in tree.entries():
247
basename = name.decode("utf-8")
248
existing_children.add(basename)
249
child_path = osutils.pathjoin(path, name)
250
if stat.S_ISDIR(mode):
251
subinvdelta, grandchildmodes, subshamap = import_git_tree(
252
texts, mapping, child_path, child_hexsha, base_inv,
253
base_children.get(basename), file_id, revision_id,
254
parent_invs, shagitmap, lookup_object,
255
allow_submodules=allow_submodules)
256
invdelta.extend(subinvdelta)
257
child_modes.update(grandchildmodes)
258
shamap.extend(subshamap)
259
elif S_ISGITLINK(mode): # submodule
282
260
if not allow_submodules:
283
261
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)
262
subinvdelta, grandchildmodes, subshamap = import_git_submodule(
263
texts, mapping, child_path, child_hexsha, base_inv, base_children.get(basename),
264
file_id, revision_id, parent_invs, shagitmap, lookup_object)
265
invdelta.extend(subinvdelta)
266
child_modes.update(grandchildmodes)
267
shamap.extend(subshamap)
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,
269
subinvdelta, subshamap = import_git_blob(texts, mapping,
270
child_path, child_hexsha, base_inv, base_children.get(basename), file_id,
271
revision_id, parent_invs, shagitmap, lookup_object,
272
mode_is_executable(mode), stat.S_ISLNK(mode))
273
invdelta.extend(subinvdelta)
274
shamap.extend(subshamap)
275
if mode not in (stat.S_IFDIR, DEFAULT_FILE_MODE,
297
276
stat.S_IFLNK, DEFAULT_FILE_MODE|0111):
298
child_modes[child_path] = child_mode
277
child_modes[child_path] = mode
299
278
# Remove any children that have disappeared
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):
279
if base_ie is not None and base_ie.kind == "directory":
280
invdelta.extend(remove_disappeared_children(base_inv.id2path(file_id),
281
base_children, existing_children))
282
shamap.append((hexsha, "tree", (file_id, revision_id)))
283
return invdelta, child_modes, shamap
286
def approx_inv_size(inv):
287
# Very rough estimate, 1k per inventory entry
288
return len(inv) * 1024
291
def import_git_objects(repo, mapping, object_iter, target_git_object_retriever,
404
293
"""Import a set of git objects into a bzr repository.
406
295
:param repo: Target Bazaar repository
407
296
:param mapping: Mapping to use
408
297
:param object_iter: Iterator over Git objects.
409
:return: Tuple with pack hints and last imported revision id
411
299
def lookup_object(sha):
413
301
return object_iter[sha]
415
303
return target_git_object_retriever[sha]
304
# TODO: a more (memory-)efficient implementation of this
418
heads = list(set(heads))
419
trees_cache = LRUTreeCache(repo)
308
parent_invs_cache = lru_cache.LRUSizeCache(compute_size=approx_inv_size,
309
max_size=MAX_INV_CACHE_SIZE)
420
310
# Find and convert commit objects
422
312
if pb is not None:
427
317
o = lookup_object(head)
319
trace.mutter('missing head %s', head)
430
321
if isinstance(o, Commit):
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))):
322
rev = mapping.import_commit(o)
323
if repo.has_revision(rev.revision_id):
325
squash_revision(repo, rev)
436
326
graph.append((o.id, o.parents))
327
target_git_object_retriever._idmap.add_entry(o.id, "commit",
328
(rev.revision_id, o.tree))
437
329
heads.extend([p for p in o.parents if p not in checked])
438
330
elif isinstance(o, Tag):
439
if o.object[1] not in checked:
440
heads.append(o.object[1])
331
heads.append(o.object[1])
442
333
trace.warning("Unable to import head object %r" % o)
443
334
checked.add(o.id)
445
336
# Order the revisions
446
337
# Create the inventory objects
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()
338
for i, head in enumerate(topo_sort(graph)):
340
pb.update("fetching revisions", i, len(graph))
341
o = lookup_object(head)
342
rev = mapping.import_commit(o)
343
# We have to do this here, since we have to walk the tree and
344
# we need to make sure to import the blobs / trees with the right
345
# path; this may involve adding them more than once.
347
for parent_id in rev.parent_ids:
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()
349
parent_invs.append(parent_invs_cache[parent_id])
351
parent_inv = repo.get_inventory(parent_id)
352
parent_invs.append(parent_inv)
353
parent_invs_cache[parent_id] = parent_inv
354
if parent_invs == []:
355
base_inv = Inventory(root_id=None)
477
target_git_object_retriever.commit_write_group()
478
return pack_hints, last_imported
358
base_inv = parent_invs[0]
359
base_ie = base_inv.root
360
inv_delta, unusual_modes, shamap = import_git_tree(repo.texts,
361
mapping, "", o.tree, base_inv, base_ie, None, rev.revision_id,
362
parent_invs, target_git_object_retriever._idmap, lookup_object,
363
allow_submodules=getattr(repo._format, "supports_tree_reference", False))
364
target_git_object_retriever._idmap.add_entries(shamap)
365
if unusual_modes != {}:
366
for path, mode in unusual_modes.iteritems():
367
warn_unusual_mode(rev.foreign_revid, path, mode)
368
mapping.import_unusual_file_modes(rev, unusual_modes)
370
basis_id = rev.parent_ids[0]
372
basis_id = NULL_REVISION
374
rev.inventory_sha1, inv = repo.add_inventory_by_delta(basis_id,
375
inv_delta, rev.revision_id, rev.parent_ids,
377
parent_invs_cache[rev.revision_id] = inv
378
repo.add_revision(rev.revision_id, rev)
379
if "verify" in debug.debug_flags:
380
new_unusual_modes = mapping.export_unusual_file_modes(rev)
381
if new_unusual_modes != unusual_modes:
382
raise AssertionError("unusual modes don't match: %r != %r" % (unusual_modes, new_unusual_modes))
383
objs = inventory_to_tree_and_blobs(inv, repo.texts, mapping, unusual_modes)
384
for sha1, newobj, path in objs:
385
assert path is not None
386
oldobj = tree_lookup_path(lookup_object, o.tree, path)
388
raise AssertionError("%r != %r in %s" % (oldobj, newobj, path))
390
target_git_object_retriever._idmap.commit()
481
393
class InterGitRepository(InterRepository):