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 cStringIO import (
21
from dulwich.objects import (
26
from dulwich.object_store import (
38
from bzrlib.errors import (
43
from bzrlib.inventory import (
49
from bzrlib.lru_cache import (
52
from bzrlib.repository import (
55
from bzrlib.revision import (
58
from bzrlib.tsort import (
61
from bzrlib.versionedfile import (
62
FulltextContentFactory,
65
from bzrlib.plugins.git.mapping import (
67
inventory_to_tree_and_blobs,
73
from bzrlib.plugins.git.object_store import (
76
from bzrlib.plugins.git.remote import (
79
from bzrlib.plugins.git.repository import (
86
def import_git_blob(texts, mapping, path, hexsha, base_inv, parent_id,
87
revision_id, parent_invs, shagitmap, lookup_object, executable, symlink):
88
"""Import a git blob object into a bzr repository.
90
:param texts: VersionedFiles to add to
91
:param path: Path in the tree
92
:param blob: A git blob
93
:return: Inventory delta for this file
95
file_id = mapping.generate_file_id(path)
100
# We just have to hope this is indeed utf-8:
101
ie = cls(file_id, urlutils.basename(path).decode("utf-8"), parent_id)
102
ie.executable = executable
104
# See if this has changed at all
106
base_ie = base_inv[file_id]
111
base_sha = base_ie.text_id
114
base_sha = shagitmap.lookup_blob(file_id, base_ie.revision)
118
if (base_sha == hexsha and base_ie.executable == ie.executable
119
and base_ie.kind == ie.kind):
120
# If nothing has changed since the base revision, we're done
122
if base_sha == hexsha and base_ie.kind == ie.kind:
123
ie.text_size = base_ie.text_size
124
ie.text_sha1 = base_ie.text_sha1
125
ie.symlink_target = base_ie.symlink_target
126
if ie.executable == base_ie.executable:
127
ie.revision = base_ie.revision
129
blob = lookup_object(hexsha)
131
blob = lookup_object(hexsha)
132
if ie.kind == "symlink":
134
ie.symlink_target = blob.data
138
ie.text_size = len(blob.data)
139
ie.text_sha1 = osutils.sha_string(blob.data)
140
# Check what revision we should store
142
for pinv in parent_invs:
143
if pinv.revision_id == base_inv.revision_id:
152
if pie.text_sha1 == ie.text_sha1 and pie.executable == ie.executable and pie.symlink_target == ie.symlink_target:
153
# found a revision in one of the parents to use
154
ie.revision = pie.revision
156
parent_keys.append((file_id, pie.revision))
157
if ie.revision is None:
158
# Need to store a new revision
159
ie.revision = revision_id
160
assert file_id is not None
161
assert ie.revision is not None
162
texts.insert_record_stream([FulltextContentFactory((file_id, ie.revision), tuple(parent_keys), ie.text_sha1, blob.data)])
163
shamap = [(hexsha, "blob", (ie.file_id, ie.revision))]
166
if file_id in base_inv:
167
old_path = base_inv.id2path(file_id)
170
invdelta = [(old_path, path, file_id, ie)]
171
invdelta.extend(remove_disappeared_children(base_inv, base_ie, []))
172
return (invdelta, shamap)
175
def import_git_submodule(texts, mapping, path, hexsha, base_inv, parent_id,
176
revision_id, parent_invs, shagitmap, lookup_object):
177
raise NotImplementedError(import_git_submodule)
180
def remove_disappeared_children(base_inv, base_ie, existing_children):
181
if base_ie is None or base_ie.kind != 'directory':
184
deletable = [v for k,v in base_ie.children.iteritems() if k not in existing_children]
187
ret.append((base_inv.id2path(ie.file_id), None, ie.file_id, None))
188
if ie.kind == "directory":
189
deletable.extend(ie.children.values())
193
def import_git_tree(texts, mapping, path, hexsha, base_inv, parent_id,
194
revision_id, parent_invs, shagitmap, lookup_object):
195
"""Import a git tree object into a bzr repository.
197
:param texts: VersionedFiles object to add to
198
:param path: Path in the tree
199
:param tree: A git tree object
200
:param base_inv: Base inventory against which to return inventory delta
201
:return: Inventory delta for this subtree
204
file_id = mapping.generate_file_id(path)
205
# We just have to hope this is indeed utf-8:
206
ie = InventoryDirectory(file_id, urlutils.basename(path.decode("utf-8")),
210
base_ie = base_inv[file_id]
212
# Newly appeared here
214
ie.revision = revision_id
215
texts.add_lines((file_id, ie.revision), (), [])
216
invdelta.append((None, path, file_id, ie))
218
base_sha = base_ie.text_id
219
# See if this has changed at all
222
base_sha = shagitmap.lookup_tree(file_id, base_inv.revision_id)
226
if base_sha == hexsha:
227
# If nothing has changed since the base revision, we're done
229
if base_ie.kind != "directory":
230
ie.revision = revision_id
231
texts.add_lines((file_id, ie.revision), (), [])
232
invdelta.append((base_inv.id2path(file_id), path, file_id, ie))
233
# Remember for next time
234
existing_children = set()
237
tree = lookup_object(hexsha)
238
for mode, name, child_hexsha in tree.entries():
239
basename = name.decode("utf-8")
240
existing_children.add(basename)
241
child_path = osutils.pathjoin(path, name)
242
if stat.S_ISDIR(mode):
243
subinvdelta, grandchildmodes, subshamap = import_git_tree(texts,
244
mapping, child_path, child_hexsha, base_inv, file_id,
245
revision_id, parent_invs, shagitmap, lookup_object)
246
invdelta.extend(subinvdelta)
247
child_modes.update(grandchildmodes)
248
shamap.extend(subshamap)
249
elif S_ISGITLINK(mode): # submodule
250
subinvdelta, grandchildmodes, subshamap = import_git_submodule(
251
texts, mapping, child_path, child_hexsha, base_inv,
252
file_id, revision_id, parent_invs, shagitmap, lookup_object)
253
invdelta.extend(subinvdelta)
254
child_modes.update(grandchildmodes)
255
shamap.extend(subshamap)
257
subinvdelta, subshamap = import_git_blob(texts, mapping,
258
child_path, child_hexsha, base_inv, file_id, revision_id,
259
parent_invs, shagitmap, lookup_object,
260
mode_is_executable(mode), stat.S_ISLNK(mode))
261
invdelta.extend(subinvdelta)
262
shamap.extend(subshamap)
263
if mode not in (stat.S_IFDIR, DEFAULT_FILE_MODE,
264
stat.S_IFLNK, DEFAULT_FILE_MODE|0111):
265
child_modes[child_path] = mode
266
# Remove any children that have disappeared
267
invdelta.extend(remove_disappeared_children(base_inv, base_ie, existing_children))
268
shamap.append((hexsha, "tree", (file_id, revision_id)))
269
return invdelta, child_modes, shamap
272
def import_git_objects(repo, mapping, object_iter, target_git_object_retriever,
274
"""Import a set of git objects into a bzr repository.
276
:param repo: Target Bazaar repository
277
:param mapping: Mapping to use
278
:param object_iter: Iterator over Git objects.
280
def lookup_object(sha):
282
return object_iter[sha]
284
return target_git_object_retriever[sha]
285
# TODO: a more (memory-)efficient implementation of this
291
parent_invs_cache = LRUCache(50)
292
# Find and convert commit objects
295
pb.update("finding revisions to fetch", len(graph), None)
297
assert isinstance(head, str)
299
o = lookup_object(head)
302
if isinstance(o, Commit):
303
rev = mapping.import_commit(o)
304
if repo.has_revision(rev.revision_id):
306
squash_revision(repo, rev)
307
root_trees[rev.revision_id] = o.tree
308
revisions[rev.revision_id] = rev
309
graph.append((rev.revision_id, rev.parent_ids))
310
target_git_object_retriever._idmap.add_entry(o.id, "commit",
311
(rev.revision_id, o.tree))
312
heads.extend([p for p in o.parents if p not in checked])
313
elif isinstance(o, Tag):
314
heads.append(o.object[1])
316
trace.warning("Unable to import head object %r" % o)
318
# Order the revisions
319
# Create the inventory objects
320
for i, revid in enumerate(topo_sort(graph)):
322
pb.update("fetching revisions", i, len(graph))
323
rev = revisions[revid]
324
# We have to do this here, since we have to walk the tree and
325
# we need to make sure to import the blobs / trees with the right
326
# path; this may involve adding them more than once.
328
for parent_id in rev.parent_ids:
330
parent_invs.append(parent_invs_cache[parent_id])
332
parent_inv = repo.get_inventory(parent_id)
333
parent_invs.append(parent_inv)
334
parent_invs_cache[parent_id] = parent_inv
335
if parent_invs == []:
336
base_inv = Inventory(root_id=None)
338
base_inv = parent_invs[0]
339
inv_delta, unusual_modes, shamap = import_git_tree(repo.texts,
340
mapping, "", root_trees[revid], base_inv, None, revid,
341
parent_invs, target_git_object_retriever._idmap, lookup_object)
342
target_git_object_retriever._idmap.add_entries(shamap)
343
if unusual_modes != {}:
344
for path, mode in unusual_modes.iteritems():
345
warn_unusual_mode(rev.foreign_revid, path, mode)
346
mapping.import_unusual_file_modes(rev, unusual_modes)
348
basis_id = rev.parent_ids[0]
350
basis_id = NULL_REVISION
351
rev.inventory_sha1, inv = repo.add_inventory_by_delta(basis_id,
352
inv_delta, rev.revision_id, rev.parent_ids)
353
parent_invs_cache[rev.revision_id] = inv
354
repo.add_revision(rev.revision_id, rev)
355
if "verify" in debug.debug_flags:
356
new_unusual_modes = mapping.export_unusual_file_modes(rev)
357
if new_unusual_modes != unusual_modes:
358
raise AssertionError("unusual modes don't match: %r != %r" % (unusual_modes, new_unusual_modes))
359
objs = inventory_to_tree_and_blobs(inv, repo.texts, mapping, unusual_modes)
360
for sha1, newobj, path in objs:
361
assert path is not None
362
oldobj = tree_lookup_path(lookup_object, root_trees[revid], path)
364
raise AssertionError("%r != %r in %s" % (oldobj, newobj, path))
366
target_git_object_retriever._idmap.commit()
369
class InterGitRepository(InterRepository):
371
_matching_repo_format = GitRepositoryFormat()
374
def _get_repo_format_to_test():
377
def copy_content(self, revision_id=None, pb=None):
378
"""See InterRepository.copy_content."""
379
self.fetch(revision_id, pb, find_ghosts=False)
381
def fetch(self, revision_id=None, pb=None, find_ghosts=False, mapping=None,
383
self.fetch_refs(revision_id=revision_id, pb=pb, find_ghosts=find_ghosts,
384
mapping=mapping, fetch_spec=fetch_spec)
387
class InterGitNonGitRepository(InterGitRepository):
388
"""Base InterRepository that copies revisions from a Git into a non-Git
391
def fetch_refs(self, revision_id=None, pb=None, find_ghosts=False,
392
mapping=None, fetch_spec=None):
394
mapping = self.source.get_mapping()
395
if revision_id is not None:
396
interesting_heads = [revision_id]
397
elif fetch_spec is not None:
398
interesting_heads = fetch_spec.heads
400
interesting_heads = None
402
def determine_wants(refs):
404
if interesting_heads is None:
405
ret = [sha for (ref, sha) in refs.iteritems() if not ref.endswith("^{}")]
407
ret = [mapping.revision_id_bzr_to_foreign(revid)[0] for revid in interesting_heads if revid not in (None, NULL_REVISION)]
408
return [rev for rev in ret if not self.target.has_revision(mapping.revision_id_foreign_to_bzr(rev))]
409
self.fetch_objects(determine_wants, mapping, pb)
413
class InterRemoteGitNonGitRepository(InterGitNonGitRepository):
414
"""InterRepository that copies revisions from a remote Git into a non-Git
417
def fetch_objects(self, determine_wants, mapping, pb=None):
419
pb.update("git: %s" % text.rstrip("\r\n"), 0, 0)
420
store = BazaarObjectStore(self.target, mapping)
421
self.target.lock_write()
423
heads = self.target.get_graph().heads(self.target.all_revision_ids())
424
graph_walker = store.get_graph_walker(
425
[store._lookup_revision_sha1(head) for head in heads])
428
def record_determine_wants(heads):
429
wants = determine_wants(heads)
430
recorded_wants.extend(wants)
435
create_pb = pb = ui.ui_factory.nested_progress_bar()
437
self.target.start_write_group()
439
objects_iter = self.source.fetch_objects(
440
record_determine_wants, graph_walker,
441
store.get_raw, progress)
442
import_git_objects(self.target, mapping, objects_iter,
443
store, recorded_wants, pb)
445
self.target.commit_write_group()
453
def is_compatible(source, target):
454
"""Be compatible with GitRepository."""
455
# FIXME: Also check target uses VersionedFile
456
return (isinstance(source, RemoteGitRepository) and
457
target.supports_rich_root() and
458
not isinstance(target, GitRepository))
461
class InterLocalGitNonGitRepository(InterGitNonGitRepository):
462
"""InterRepository that copies revisions from a local Git into a non-Git
465
def fetch_objects(self, determine_wants, mapping, pb=None):
466
wants = determine_wants(self.source._git.get_refs())
469
create_pb = pb = ui.ui_factory.nested_progress_bar()
470
target_git_object_retriever = BazaarObjectStore(self.target, mapping)
472
self.target.lock_write()
474
self.target.start_write_group()
476
import_git_objects(self.target, mapping,
477
self.source._git.object_store,
478
target_git_object_retriever, wants, pb)
480
self.target.commit_write_group()
488
def is_compatible(source, target):
489
"""Be compatible with GitRepository."""
490
# FIXME: Also check target uses VersionedFile
491
return (isinstance(source, LocalGitRepository) and
492
target.supports_rich_root() and
493
not isinstance(target, GitRepository))
496
class InterGitGitRepository(InterGitRepository):
497
"""InterRepository that copies between Git repositories."""
499
def fetch_refs(self, revision_id=None, pb=None, find_ghosts=False,
500
mapping=None, fetch_spec=None, branches=None):
502
mapping = self.source.get_mapping()
504
trace.info("git: %s", text)
506
if revision_id is not None:
507
args = [mapping.revision_id_bzr_to_foreign(revision_id)[0]]
508
elif fetch_spec is not None:
509
args = [mapping.revision_id_bzr_to_foreign(revid)[0] for revid in fetch_spec.heads]
510
if branches is not None:
511
determine_wants = lambda x: [x[y] for y in branches if not x[y] in r.object_store]
512
elif fetch_spec is None and revision_id is None:
513
determine_wants = r.object_store.determine_wants_all
515
determine_wants = lambda x: [y for y in args if not y in r.object_store]
517
graphwalker = r.get_graph_walker()
518
f, commit = r.object_store.add_thin_pack()
520
refs = self.source.fetch_pack(determine_wants, graphwalker,
529
def is_compatible(source, target):
530
"""Be compatible with GitRepository."""
531
return (isinstance(source, GitRepository) and
532
isinstance(target, GitRepository))