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 (
22
from dulwich.object_store import (
35
from bzrlib.errors import (
38
from bzrlib.inventory import (
44
from bzrlib.lru_cache import (
47
from bzrlib.repository import (
50
from bzrlib.revision import (
53
from bzrlib.tsort import (
56
from bzrlib.versionedfile import (
57
FulltextContentFactory,
60
from bzrlib.plugins.git.mapping import (
62
inventory_to_tree_and_blobs,
67
from bzrlib.plugins.git.object_store import (
70
from bzrlib.plugins.git.remote import (
73
from bzrlib.plugins.git.repository import (
80
def import_git_blob(texts, mapping, path, hexsha, base_inv, base_ie, parent_id,
81
revision_id, parent_invs, shagitmap, lookup_object, executable, symlink):
82
"""Import a git blob object into a bzr repository.
84
:param texts: VersionedFiles to add to
85
:param path: Path in the tree
86
:param blob: A git blob
87
:return: Inventory delta for this file
89
file_id = mapping.generate_file_id(path)
94
# We just have to hope this is indeed utf-8:
95
ie = cls(file_id, urlutils.basename(path).decode("utf-8"), parent_id)
96
ie.executable = executable
97
# See if this has changed at all
102
base_sha = shagitmap.lookup_blob(file_id, base_ie.revision)
106
if (base_sha == hexsha and base_ie.executable == ie.executable
107
and base_ie.kind == ie.kind):
108
# If nothing has changed since the base revision, we're done
110
if base_sha == hexsha and base_ie.kind == ie.kind:
111
ie.text_size = base_ie.text_size
112
ie.text_sha1 = base_ie.text_sha1
113
ie.symlink_target = base_ie.symlink_target
114
if ie.executable == base_ie.executable:
115
ie.revision = base_ie.revision
117
blob = lookup_object(hexsha)
119
blob = lookup_object(hexsha)
120
if ie.kind == "symlink":
122
ie.symlink_target = blob.data
126
ie.text_size = len(blob.data)
127
ie.text_sha1 = osutils.sha_string(blob.data)
128
# Check what revision we should store
130
for pinv in parent_invs:
131
if pinv.revision_id == base_inv.revision_id:
140
if pie.text_sha1 == ie.text_sha1 and pie.executable == ie.executable and pie.symlink_target == ie.symlink_target:
141
# found a revision in one of the parents to use
142
ie.revision = pie.revision
144
parent_keys.append((file_id, pie.revision))
145
if ie.revision is None:
146
# Need to store a new revision
147
ie.revision = revision_id
148
assert file_id is not None
149
assert ie.revision is not None
150
texts.insert_record_stream([FulltextContentFactory((file_id, ie.revision), tuple(parent_keys), ie.text_sha1, blob.data)])
151
shamap = [(hexsha, "blob", (ie.file_id, ie.revision))]
155
if base_ie is not None:
156
old_path = base_inv.id2path(file_id)
157
if base_ie.kind == "directory":
158
invdelta.extend(remove_disappeared_children(old_path, base_ie.children, []))
161
invdelta.append((old_path, path, file_id, ie))
162
return (invdelta, shamap)
165
def import_git_submodule(texts, mapping, path, hexsha, base_inv, base_ie, parent_id,
166
revision_id, parent_invs, shagitmap, lookup_object):
167
raise NotImplementedError(import_git_submodule)
170
def remove_disappeared_children(path, base_children, existing_children):
172
deletable = [(osutils.pathjoin(path, k), v) for k,v in base_children.iteritems() if k not in existing_children]
174
(path, ie) = deletable.pop()
175
ret.append((path, None, ie.file_id, None))
176
if ie.kind == "directory":
177
for name, child_ie in ie.children.iteritems():
178
deletable.append((osutils.pathjoin(path, name), child_ie))
182
def import_git_tree(texts, mapping, path, hexsha, base_inv, base_ie, parent_id,
183
revision_id, parent_invs, shagitmap, lookup_object):
184
"""Import a git tree object into a bzr repository.
186
:param texts: VersionedFiles object to add to
187
:param path: Path in the tree
188
:param tree: A git tree object
189
:param base_inv: Base inventory against which to return inventory delta
190
:return: Inventory delta for this subtree
193
file_id = mapping.generate_file_id(path)
194
# We just have to hope this is indeed utf-8:
195
ie = InventoryDirectory(file_id, urlutils.basename(path.decode("utf-8")),
198
# Newly appeared here
199
ie.revision = revision_id
200
texts.insert_record_stream([FulltextContentFactory((file_id, ie.revision), (), None, "")])
201
invdelta.append((None, path, file_id, ie))
203
# See if this has changed at all
205
base_sha = shagitmap.lookup_tree(file_id, base_inv.revision_id)
209
if base_sha == hexsha:
210
# If nothing has changed since the base revision, we're done
212
if base_ie.kind != "directory":
213
ie.revision = revision_id
214
texts.insert_record_stream([FulltextContentFactory((ie.file_id, ie.revision), (), None, "")])
215
invdelta.append((base_inv.id2path(ie.file_id), path, ie.file_id, ie))
216
if base_ie is not None and base_ie.kind == "directory":
217
base_children = base_ie.children
220
# Remember for next time
221
existing_children = set()
224
tree = lookup_object(hexsha)
225
for mode, name, child_hexsha in tree.entries():
226
basename = name.decode("utf-8")
227
existing_children.add(basename)
228
child_path = osutils.pathjoin(path, name)
229
if stat.S_ISDIR(mode):
230
subinvdelta, grandchildmodes, subshamap = import_git_tree(
231
texts, mapping, child_path, child_hexsha, base_inv,
232
base_children.get(basename), file_id, revision_id, parent_invs, shagitmap,
234
invdelta.extend(subinvdelta)
235
child_modes.update(grandchildmodes)
236
shamap.extend(subshamap)
237
elif S_ISGITLINK(mode): # submodule
238
subinvdelta, grandchildmodes, subshamap = import_git_submodule(
239
texts, mapping, child_path, child_hexsha, base_inv, base_ie.get(basename),
240
file_id, revision_id, parent_invs, shagitmap, lookup_object)
241
invdelta.extend(subinvdelta)
242
child_modes.update(grandchildmodes)
243
shamap.extend(subshamap)
245
subinvdelta, subshamap = import_git_blob(texts, mapping,
246
child_path, child_hexsha, base_inv, base_children.get(basename), file_id,
247
revision_id, parent_invs, shagitmap, lookup_object,
248
mode_is_executable(mode), stat.S_ISLNK(mode))
249
invdelta.extend(subinvdelta)
250
shamap.extend(subshamap)
251
if mode not in (stat.S_IFDIR, DEFAULT_FILE_MODE,
252
stat.S_IFLNK, DEFAULT_FILE_MODE|0111):
253
child_modes[child_path] = mode
254
# Remove any children that have disappeared
255
if base_ie is not None and base_ie.kind == "directory":
256
invdelta.extend(remove_disappeared_children(base_inv.id2path(file_id),
257
base_children, existing_children))
258
shamap.append((hexsha, "tree", (file_id, revision_id)))
259
return invdelta, child_modes, shamap
262
def import_git_objects(repo, mapping, object_iter, target_git_object_retriever,
264
"""Import a set of git objects into a bzr repository.
266
:param repo: Target Bazaar repository
267
:param mapping: Mapping to use
268
:param object_iter: Iterator over Git objects.
270
def lookup_object(sha):
272
return object_iter[sha]
274
return target_git_object_retriever[sha]
275
# TODO: a more (memory-)efficient implementation of this
281
parent_invs_cache = LRUCache(50)
282
# Find and convert commit objects
285
pb.update("finding revisions to fetch", len(graph), None)
287
assert isinstance(head, str)
289
o = lookup_object(head)
292
if isinstance(o, Commit):
293
rev = mapping.import_commit(o)
294
if repo.has_revision(rev.revision_id):
296
squash_revision(repo, rev)
297
root_trees[rev.revision_id] = o.tree
298
revisions[rev.revision_id] = rev
299
graph.append((rev.revision_id, rev.parent_ids))
300
target_git_object_retriever._idmap.add_entry(o.id, "commit",
301
(rev.revision_id, o.tree))
302
heads.extend([p for p in o.parents if p not in checked])
303
elif isinstance(o, Tag):
304
heads.append(o.object[1])
306
trace.warning("Unable to import head object %r" % o)
308
# Order the revisions
309
# Create the inventory objects
310
for i, revid in enumerate(topo_sort(graph)):
312
pb.update("fetching revisions", i, len(graph))
313
rev = revisions[revid]
314
# We have to do this here, since we have to walk the tree and
315
# we need to make sure to import the blobs / trees with the right
316
# path; this may involve adding them more than once.
318
for parent_id in rev.parent_ids:
320
parent_invs.append(parent_invs_cache[parent_id])
322
parent_inv = repo.get_inventory(parent_id)
323
parent_invs.append(parent_inv)
324
parent_invs_cache[parent_id] = parent_inv
325
if parent_invs == []:
326
base_inv = Inventory(root_id=None)
329
base_inv = parent_invs[0]
330
base_ie = base_inv.root
331
inv_delta, unusual_modes, shamap = import_git_tree(repo.texts,
332
mapping, "", root_trees[revid], base_inv, base_ie, None, revid,
333
parent_invs, target_git_object_retriever._idmap, lookup_object)
334
target_git_object_retriever._idmap.add_entries(shamap)
335
if unusual_modes != {}:
336
for path, mode in unusual_modes.iteritems():
337
warn_unusual_mode(rev.foreign_revid, path, mode)
338
mapping.import_unusual_file_modes(rev, unusual_modes)
340
basis_id = rev.parent_ids[0]
342
basis_id = NULL_REVISION
343
rev.inventory_sha1, inv = repo.add_inventory_by_delta(basis_id,
344
inv_delta, rev.revision_id, rev.parent_ids)
345
parent_invs_cache[rev.revision_id] = inv
346
repo.add_revision(rev.revision_id, rev)
347
if "verify" in debug.debug_flags:
348
new_unusual_modes = mapping.export_unusual_file_modes(rev)
349
if new_unusual_modes != unusual_modes:
350
raise AssertionError("unusual modes don't match: %r != %r" % (unusual_modes, new_unusual_modes))
351
objs = inventory_to_tree_and_blobs(inv, repo.texts, mapping, unusual_modes)
352
for sha1, newobj, path in objs:
353
assert path is not None
354
oldobj = tree_lookup_path(lookup_object, root_trees[revid], path)
356
raise AssertionError("%r != %r in %s" % (oldobj, newobj, path))
358
target_git_object_retriever._idmap.commit()
361
class InterGitRepository(InterRepository):
363
_matching_repo_format = GitRepositoryFormat()
366
def _get_repo_format_to_test():
369
def copy_content(self, revision_id=None, pb=None):
370
"""See InterRepository.copy_content."""
371
self.fetch(revision_id, pb, find_ghosts=False)
373
def fetch(self, revision_id=None, pb=None, find_ghosts=False, mapping=None,
375
self.fetch_refs(revision_id=revision_id, pb=pb, find_ghosts=find_ghosts,
376
mapping=mapping, fetch_spec=fetch_spec)
379
class InterGitNonGitRepository(InterGitRepository):
380
"""Base InterRepository that copies revisions from a Git into a non-Git
383
def fetch_refs(self, revision_id=None, pb=None, find_ghosts=False,
384
mapping=None, fetch_spec=None):
386
mapping = self.source.get_mapping()
387
if revision_id is not None:
388
interesting_heads = [revision_id]
389
elif fetch_spec is not None:
390
interesting_heads = fetch_spec.heads
392
interesting_heads = None
394
def determine_wants(refs):
396
if interesting_heads is None:
397
ret = [sha for (ref, sha) in refs.iteritems() if not ref.endswith("^{}")]
399
ret = [mapping.revision_id_bzr_to_foreign(revid)[0] for revid in interesting_heads if revid not in (None, NULL_REVISION)]
400
return [rev for rev in ret if not self.target.has_revision(mapping.revision_id_foreign_to_bzr(rev))]
401
pack_hint = self.fetch_objects(determine_wants, mapping, pb)
402
if pack_hint is not None and self.target._format.pack_compresses:
403
self.target.pack(hint=pack_hint)
407
_GIT_PROGRESS_RE = re.compile(r"(.*?): +(\d+)% \((\d+)/(\d+)\)")
408
def report_git_progress(pb, text):
409
text = text.rstrip("\r\n")
410
g = _GIT_PROGRESS_RE.match(text)
412
(text, pct, current, total) = g.groups()
413
pb.update(text, int(current), int(total))
415
pb.update(text, 0, 0)
418
class InterRemoteGitNonGitRepository(InterGitNonGitRepository):
419
"""InterRepository that copies revisions from a remote Git into a non-Git
422
def get_target_heads(self):
423
# FIXME: This should be more efficient
424
all_revs = self.target.all_revision_ids()
425
parent_map = self.target.get_parent_map(all_revs)
427
map(all_parents.update, parent_map.itervalues())
428
return set(all_revs) - all_parents
430
def fetch_objects(self, determine_wants, mapping, pb=None):
432
report_git_progress(pb, text)
433
store = BazaarObjectStore(self.target, mapping)
434
self.target.lock_write()
436
heads = self.get_target_heads()
437
graph_walker = store.get_graph_walker(
438
[store._lookup_revision_sha1(head) for head in heads])
441
def record_determine_wants(heads):
442
wants = determine_wants(heads)
443
recorded_wants.extend(wants)
448
create_pb = pb = ui.ui_factory.nested_progress_bar()
450
self.target.start_write_group()
452
objects_iter = self.source.fetch_objects(
453
record_determine_wants, graph_walker,
454
store.get_raw, progress)
455
import_git_objects(self.target, mapping, objects_iter,
456
store, recorded_wants, pb)
458
return self.target.commit_write_group()
466
def is_compatible(source, target):
467
"""Be compatible with GitRepository."""
468
# FIXME: Also check target uses VersionedFile
469
return (isinstance(source, RemoteGitRepository) and
470
target.supports_rich_root() and
471
not isinstance(target, GitRepository))
474
class InterLocalGitNonGitRepository(InterGitNonGitRepository):
475
"""InterRepository that copies revisions from a local Git into a non-Git
478
def fetch_objects(self, determine_wants, mapping, pb=None):
479
wants = determine_wants(self.source._git.get_refs())
482
create_pb = pb = ui.ui_factory.nested_progress_bar()
483
target_git_object_retriever = BazaarObjectStore(self.target, mapping)
485
self.target.lock_write()
487
self.target.start_write_group()
489
import_git_objects(self.target, mapping,
490
self.source._git.object_store,
491
target_git_object_retriever, wants, pb)
493
return self.target.commit_write_group()
501
def is_compatible(source, target):
502
"""Be compatible with GitRepository."""
503
# FIXME: Also check target uses VersionedFile
504
return (isinstance(source, LocalGitRepository) and
505
target.supports_rich_root() and
506
not isinstance(target, GitRepository))
509
class InterGitGitRepository(InterGitRepository):
510
"""InterRepository that copies between Git repositories."""
512
def fetch_refs(self, revision_id=None, pb=None, find_ghosts=False,
513
mapping=None, fetch_spec=None, branches=None):
515
mapping = self.source.get_mapping()
517
trace.info("git: %s", text)
519
if revision_id is not None:
520
args = [mapping.revision_id_bzr_to_foreign(revision_id)[0]]
521
elif fetch_spec is not None:
522
args = [mapping.revision_id_bzr_to_foreign(revid)[0] for revid in fetch_spec.heads]
523
if branches is not None:
524
determine_wants = lambda x: [x[y] for y in branches if not x[y] in r.object_store]
525
elif fetch_spec is None and revision_id is None:
526
determine_wants = r.object_store.determine_wants_all
528
determine_wants = lambda x: [y for y in args if not y in r.object_store]
530
graphwalker = r.get_graph_walker()
531
f, commit = r.object_store.add_thin_pack()
533
refs = self.source.fetch_pack(determine_wants, graphwalker,
542
def is_compatible(source, target):
543
"""Be compatible with GitRepository."""
544
return (isinstance(source, GitRepository) and
545
isinstance(target, GitRepository))