1
# Copyright (C) 2008 Jelmer Vernooij <jelmer@samba.org>
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
from dulwich.objects import (
23
from dulwich.object_store import (
36
from bzrlib.errors import (
40
from bzrlib.inventory import (
47
from bzrlib.repository import (
50
from bzrlib.revision import (
53
from bzrlib.tsort import (
56
from bzrlib.versionedfile import (
57
ChunkedContentFactory,
60
from bzrlib.plugins.git.mapping import (
62
inventory_to_tree_and_blobs,
68
from bzrlib.plugins.git.object_store import (
72
from bzrlib.plugins.git.remote import (
75
from bzrlib.plugins.git.repository import (
82
def import_git_blob(texts, mapping, path, name, (base_hexsha, hexsha),
83
base_inv, base_inv_shamap, parent_id, revision_id,
84
parent_invs, lookup_object, (base_mode, mode)):
85
"""Import a git blob object into a bzr repository.
87
:param texts: VersionedFiles to add to
88
:param path: Path in the tree
89
:param blob: A git blob
90
:return: Inventory delta for this file
92
if base_hexsha == hexsha and base_mode == mode:
93
# If nothing has changed since the base revision, we're done
95
file_id = mapping.generate_file_id(path)
96
if stat.S_ISLNK(mode):
100
ie = cls(file_id, name.decode("utf-8"), parent_id)
101
ie.executable = mode_is_executable(mode)
102
if base_hexsha == hexsha and mode_kind(base_mode) == mode_kind(mode):
103
base_ie = base_inv[base_inv.path2id(path)]
104
ie.text_size = base_ie.text_size
105
ie.text_sha1 = base_ie.text_sha1
106
ie.symlink_target = base_ie.symlink_target
107
if ie.executable == base_ie.executable:
108
ie.revision = base_ie.revision
110
blob = lookup_object(hexsha)
112
blob = lookup_object(hexsha)
113
if ie.kind == "symlink":
115
ie.symlink_target = blob.data
119
ie.text_size = len(blob.data)
120
ie.text_sha1 = osutils.sha_string(blob.data)
121
# Check what revision we should store
123
for pinv in parent_invs[1:]:
124
if pinv.revision_id == base_inv.revision_id:
133
if pie.text_sha1 == ie.text_sha1 and pie.executable == ie.executable and pie.symlink_target == ie.symlink_target:
134
# found a revision in one of the parents to use
135
ie.revision = pie.revision
137
parent_keys.append((file_id, pie.revision))
138
if ie.revision is None:
139
# Need to store a new revision
140
ie.revision = revision_id
141
assert ie.revision is not None
142
if ie.kind == 'symlink':
146
chunks = blob.chunked
147
except AttributeError: # older version of dulwich
149
texts.insert_record_stream([ChunkedContentFactory((file_id, ie.revision), tuple(parent_keys), ie.text_sha1, chunks)])
150
shamap = { ie.file_id: hexsha }
152
if base_hexsha is not None:
153
old_path = path # Renames are not supported yet
154
if stat.S_ISDIR(base_mode):
155
invdelta.extend(remove_disappeared_children(base_inv, old_path,
156
lookup_object(base_hexsha), [], lookup_object))
159
invdelta.append((old_path, path, file_id, ie))
160
return (invdelta, shamap)
163
class SubmodulesRequireSubtrees(BzrError):
164
_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'."""
168
def import_git_submodule(texts, mapping, path, name, (base_hexsha, hexsha),
169
base_inv, parent_id, revision_id, parent_invs, lookup_object,
171
if base_hexsha == hexsha and base_mode == mode:
173
file_id = mapping.generate_file_id(path)
174
ie = TreeReference(file_id, name.decode("utf-8"), parent_id)
175
ie.revision = revision_id
176
if base_hexsha is None:
180
ie.reference_revision = mapping.revision_id_foreign_to_bzr(hexsha)
181
texts.insert_record_stream([ChunkedContentFactory((file_id, ie.revision), (), None, [])])
182
invdelta = [(oldpath, path, file_id, ie)]
183
return invdelta, {}, {}
186
def remove_disappeared_children(base_inv, path, base_tree, existing_children,
189
for name, mode, hexsha in base_tree.iteritems():
190
if name in existing_children:
192
c_path = posixpath.join(path, name.decode("utf-8"))
193
ret.append((c_path, None, base_inv.path2id(c_path), None))
194
if stat.S_ISDIR(mode):
195
ret.extend(remove_disappeared_children(
196
base_inv, c_path, lookup_object(hexsha), [], lookup_object))
200
def import_git_tree(texts, mapping, path, name, (base_hexsha, hexsha),
201
base_inv, base_inv_shamap, parent_id, revision_id, parent_invs,
202
lookup_object, (base_mode, mode), allow_submodules=False):
203
"""Import a git tree object into a bzr repository.
205
:param texts: VersionedFiles object to add to
206
:param path: Path in the tree
207
:param tree: A git tree object
208
:param base_inv: Base inventory against which to return inventory delta
209
:return: Inventory delta for this subtree
211
if base_hexsha == hexsha and base_mode == mode:
212
# If nothing has changed since the base revision, we're done
215
file_id = mapping.generate_file_id(path)
216
# We just have to hope this is indeed utf-8:
217
ie = InventoryDirectory(file_id, name.decode("utf-8"), parent_id)
218
tree = lookup_object(hexsha)
219
if base_hexsha is None:
221
old_path = None # Newly appeared here
223
base_tree = lookup_object(base_hexsha)
224
old_path = path # Renames aren't supported yet
225
if base_tree is None or type(base_tree) is not Tree:
226
ie.revision = revision_id
227
invdelta.append((old_path, path, ie.file_id, ie))
228
texts.insert_record_stream([ChunkedContentFactory((ie.file_id, ie.revision), (), None, [])])
229
# Remember for next time
230
existing_children = set()
233
for child_mode, name, child_hexsha in tree.entries():
234
existing_children.add(name)
235
child_path = posixpath.join(path, name)
236
if type(base_tree) is Tree:
238
child_base_mode, child_base_hexsha = base_tree[name]
240
child_base_hexsha = None
243
child_base_hexsha = None
245
if stat.S_ISDIR(child_mode):
246
subinvdelta, grandchildmodes, subshamap = import_git_tree(
247
texts, mapping, child_path, name,
248
(child_base_hexsha, child_hexsha),
249
base_inv, base_inv_shamap,
250
file_id, revision_id, parent_invs, lookup_object,
251
(child_base_mode, child_mode),
252
allow_submodules=allow_submodules)
253
elif S_ISGITLINK(child_mode): # submodule
254
if not allow_submodules:
255
raise SubmodulesRequireSubtrees()
256
subinvdelta, grandchildmodes, subshamap = import_git_submodule(
257
texts, mapping, child_path, name,
258
(child_base_hexsha, child_hexsha),
259
base_inv, file_id, revision_id, parent_invs, lookup_object,
260
(child_base_mode, child_mode))
262
subinvdelta, subshamap = import_git_blob(texts, mapping,
263
child_path, name, (child_base_hexsha, child_hexsha),
264
base_inv, base_inv_shamap,
266
revision_id, parent_invs, lookup_object,
267
(child_base_mode, child_mode))
269
child_modes.update(grandchildmodes)
270
invdelta.extend(subinvdelta)
271
shamap.update(subshamap)
272
if child_mode not in (stat.S_IFDIR, DEFAULT_FILE_MODE,
273
stat.S_IFLNK, DEFAULT_FILE_MODE|0111):
274
child_modes[child_path] = child_mode
275
# Remove any children that have disappeared
276
if base_tree is not None and type(base_tree) is Tree:
277
invdelta.extend(remove_disappeared_children(base_inv, old_path,
278
base_tree, existing_children, lookup_object))
279
shamap[file_id] = hexsha
280
return invdelta, child_modes, shamap
283
def import_git_commit(repo, mapping, head, lookup_object,
284
target_git_object_retriever, parent_invs_cache):
285
o = lookup_object(head)
286
rev = mapping.import_commit(o)
287
# We have to do this here, since we have to walk the tree and
288
# we need to make sure to import the blobs / trees with the right
289
# path; this may involve adding them more than once.
290
parent_invs = parent_invs_cache.get_inventories(rev.parent_ids)
291
if parent_invs == []:
292
base_inv = Inventory(root_id=None)
293
base_inv_shamap = None # Should never be accessed
297
base_inv = parent_invs[0]
298
base_inv_shamap = target_git_object_retriever._idmap.get_inventory_sha_map(base_inv.revision_id)
299
base_tree = lookup_object(o.parents[0]).tree
300
base_mode = stat.S_IFDIR
301
inv_delta, unusual_modes, shamap = import_git_tree(repo.texts,
302
mapping, "", u"", (base_tree, o.tree), base_inv, base_inv_shamap,
303
None, rev.revision_id, parent_invs, lookup_object,
304
(base_mode, stat.S_IFDIR),
305
allow_submodules=getattr(repo._format, "supports_tree_reference", False))
307
for (oldpath, newpath, fileid, new_ie) in inv_delta:
309
entries.append((fileid, None, None, None))
311
if new_ie.kind in ("file", "symlink"):
312
entries.append((fileid, "blob", shamap[fileid], new_ie.revision))
313
elif new_ie.kind == "directory":
314
entries.append((fileid, "tree", shamap[fileid], rev.revision_id))
317
target_git_object_retriever._idmap.add_entries(rev.revision_id,
318
rev.parent_ids, head, o.tree, entries)
319
if unusual_modes != {}:
320
for path, mode in unusual_modes.iteritems():
321
warn_unusual_mode(rev.foreign_revid, path, mode)
322
mapping.import_unusual_file_modes(rev, unusual_modes)
324
basis_id = rev.parent_ids[0]
326
basis_id = NULL_REVISION
328
rev.inventory_sha1, inv = repo.add_inventory_by_delta(basis_id,
329
inv_delta, rev.revision_id, rev.parent_ids,
331
parent_invs_cache.add(rev.revision_id, inv)
332
repo.add_revision(rev.revision_id, rev)
333
if "verify" in debug.debug_flags:
334
new_unusual_modes = mapping.export_unusual_file_modes(rev)
335
if new_unusual_modes != unusual_modes:
336
raise AssertionError("unusual modes don't match: %r != %r" % (unusual_modes, new_unusual_modes))
337
objs = inventory_to_tree_and_blobs(inv, repo.texts, mapping, unusual_modes)
338
for newsha1, newobj, path in objs:
339
assert path is not None
343
(oldmode, oldsha1) = tree_lookup_path(lookup_object, o.tree, path)
344
if oldsha1 != newsha1:
345
raise AssertionError("%r != %r in %s" % (oldsha1, newsha1, path))
348
def import_git_objects(repo, mapping, object_iter,
349
target_git_object_retriever, heads, pb=None, limit=None):
350
"""Import a set of git objects into a bzr repository.
352
:param repo: Target Bazaar repository
353
:param mapping: Mapping to use
354
:param object_iter: Iterator over Git objects.
355
:return: Tuple with pack hints and last imported revision id
357
def lookup_object(sha):
359
return object_iter[sha]
361
return target_git_object_retriever[sha]
364
heads = list(set(heads))
365
parent_invs_cache = LRUInventoryCache(repo)
366
# Find and convert commit objects
369
pb.update("finding revisions to fetch", len(graph), None)
371
assert isinstance(head, str)
373
o = lookup_object(head)
376
if isinstance(o, Commit):
377
rev = mapping.import_commit(o)
378
if repo.has_revision(rev.revision_id):
380
squash_revision(repo, rev)
381
graph.append((o.id, o.parents))
382
heads.extend([p for p in o.parents if p not in checked])
383
elif isinstance(o, Tag):
384
if o.object[1] not in checked:
385
heads.append(o.object[1])
387
trace.warning("Unable to import head object %r" % o)
390
# Order the revisions
391
# Create the inventory objects
393
revision_ids = topo_sort(graph)
395
if limit is not None:
396
revision_ids = revision_ids[:limit]
398
for offset in range(0, len(revision_ids), batch_size):
399
target_git_object_retriever.start_write_group() # FIXME: try/finally
401
repo.start_write_group()
403
for i, head in enumerate(
404
revision_ids[offset:offset+batch_size]):
406
pb.update("fetching revisions", offset+i,
408
import_git_commit(repo, mapping, head, lookup_object,
409
target_git_object_retriever,
413
repo.abort_write_group()
416
hint = repo.commit_write_group()
418
pack_hints.extend(hint)
420
target_git_object_retriever.abort_write_group()
423
target_git_object_retriever.commit_write_group()
424
return pack_hints, last_imported
427
class InterGitRepository(InterRepository):
429
_matching_repo_format = GitRepositoryFormat()
432
def _get_repo_format_to_test():
435
def copy_content(self, revision_id=None, pb=None):
436
"""See InterRepository.copy_content."""
437
self.fetch(revision_id, pb, find_ghosts=False)
439
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
440
mapping=None, fetch_spec=None):
441
self.fetch_refs(revision_id=revision_id, pb=pb,
442
find_ghosts=find_ghosts, mapping=mapping, fetch_spec=fetch_spec)
445
class InterGitNonGitRepository(InterGitRepository):
446
"""Base InterRepository that copies revisions from a Git into a non-Git
449
def fetch_refs(self, revision_id=None, pb=None, find_ghosts=False,
450
mapping=None, fetch_spec=None):
452
mapping = self.source.get_mapping()
453
if revision_id is not None:
454
interesting_heads = [revision_id]
455
elif fetch_spec is not None:
456
interesting_heads = fetch_spec.heads
458
interesting_heads = None
460
def determine_wants(refs):
462
if interesting_heads is None:
463
ret = [sha for (ref, sha) in refs.iteritems() if not ref.endswith("^{}")]
465
ret = [mapping.revision_id_bzr_to_foreign(revid)[0] for revid in interesting_heads if revid not in (None, NULL_REVISION)]
466
return [rev for rev in ret if not self.target.has_revision(mapping.revision_id_foreign_to_bzr(rev))]
467
(pack_hint, _) = self.fetch_objects(determine_wants, mapping, pb)
468
if pack_hint is not None and self.target._format.pack_compresses:
469
self.target.pack(hint=pack_hint)
470
if interesting_heads is not None:
471
present_interesting_heads = self.target.has_revisions(interesting_heads)
472
missing_interesting_heads = set(interesting_heads) - present_interesting_heads
473
if missing_interesting_heads:
474
raise AssertionError("Missing interesting heads: %r" % missing_interesting_heads)
478
_GIT_PROGRESS_RE = re.compile(r"(.*?): +(\d+)% \((\d+)/(\d+)\)")
479
def report_git_progress(pb, text):
480
text = text.rstrip("\r\n")
481
g = _GIT_PROGRESS_RE.match(text)
483
(text, pct, current, total) = g.groups()
484
pb.update(text, int(current), int(total))
486
pb.update(text, 0, 0)
489
class InterRemoteGitNonGitRepository(InterGitNonGitRepository):
490
"""InterRepository that copies revisions from a remote Git into a non-Git
493
def get_target_heads(self):
494
# FIXME: This should be more efficient
495
all_revs = self.target.all_revision_ids()
496
parent_map = self.target.get_parent_map(all_revs)
498
map(all_parents.update, parent_map.itervalues())
499
return set(all_revs) - all_parents
501
def fetch_objects(self, determine_wants, mapping, pb=None, limit=None):
503
report_git_progress(pb, text)
504
store = BazaarObjectStore(self.target, mapping)
505
self.target.lock_write()
507
heads = self.get_target_heads()
508
graph_walker = store.get_graph_walker(
509
[store._lookup_revision_sha1(head) for head in heads])
512
def record_determine_wants(heads):
513
wants = determine_wants(heads)
514
recorded_wants.extend(wants)
519
create_pb = pb = ui.ui_factory.nested_progress_bar()
521
objects_iter = self.source.fetch_objects(
522
record_determine_wants, graph_walker,
523
store.get_raw, progress)
524
return import_git_objects(self.target, mapping,
525
objects_iter, store, recorded_wants, pb, limit)
533
def is_compatible(source, target):
534
"""Be compatible with GitRepository."""
535
# FIXME: Also check target uses VersionedFile
536
return (isinstance(source, RemoteGitRepository) and
537
target.supports_rich_root() and
538
not isinstance(target, GitRepository))
541
class InterLocalGitNonGitRepository(InterGitNonGitRepository):
542
"""InterRepository that copies revisions from a local Git into a non-Git
545
def fetch_objects(self, determine_wants, mapping, pb=None, limit=None):
548
wants = determine_wants(self.source._git.get_refs())
551
create_pb = pb = ui.ui_factory.nested_progress_bar()
552
target_git_object_retriever = BazaarObjectStore(self.target, mapping)
554
self.target.lock_write()
556
return import_git_objects(self.target, mapping,
557
self.source._git.object_store,
558
target_git_object_retriever, wants, pb, limit)
566
def is_compatible(source, target):
567
"""Be compatible with GitRepository."""
568
# FIXME: Also check target uses VersionedFile
569
return (isinstance(source, LocalGitRepository) and
570
target.supports_rich_root() and
571
not isinstance(target, GitRepository))
574
class InterGitGitRepository(InterGitRepository):
575
"""InterRepository that copies between Git repositories."""
577
def fetch_objects(self, determine_wants, mapping, pb=None):
579
trace.note("git: %s", text)
580
graphwalker = self.target._git.get_graph_walker()
581
if (isinstance(self.source, LocalGitRepository) and
582
isinstance(self.target, LocalGitRepository)):
583
return self.source._git.fetch(self.target._git, determine_wants,
585
elif (isinstance(self.source, LocalGitRepository) and
586
isinstance(self.target, RemoteGitRepository)):
587
raise NotImplementedError
588
elif (isinstance(self.source, RemoteGitRepository) and
589
isinstance(self.target, LocalGitRepository)):
590
f, commit = self.target._git.object_store.add_thin_pack()
592
refs = self.source._git.fetch_pack(determine_wants,
593
graphwalker, f.write, progress)
602
def fetch_refs(self, revision_id=None, pb=None, find_ghosts=False,
603
mapping=None, fetch_spec=None, branches=None):
605
mapping = self.source.get_mapping()
607
if revision_id is not None:
608
args = [mapping.revision_id_bzr_to_foreign(revision_id)[0]]
609
elif fetch_spec is not None:
610
args = [mapping.revision_id_bzr_to_foreign(revid)[0] for revid in fetch_spec.heads]
611
if branches is not None:
612
determine_wants = lambda x: [x[y] for y in branches if not x[y] in r.object_store]
613
elif fetch_spec is None and revision_id is None:
614
determine_wants = r.object_store.determine_wants_all
616
determine_wants = lambda x: [y for y in args if not y in r.object_store]
617
return self.fetch_objects(determine_wants, mapping)[0]
621
def is_compatible(source, target):
622
"""Be compatible with GitRepository."""
623
return (isinstance(source, GitRepository) and
624
isinstance(target, GitRepository))
added
removed
fetch.py
