14
14
# along with this program; if not, write to the Free Software
15
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
103
# See if this has changed at all
105
base_ie = base_inv[file_id]
111
base_sha = shagitmap.lookup_blob(file_id, base_ie.revision)
115
if (base_sha == hexsha and base_ie.executable == ie.executable
116
and base_ie.kind == ie.kind):
117
# If nothing has changed since the base revision, we're done
119
if base_sha == hexsha and base_ie.kind == ie.kind:
120
ie.text_size = base_ie.text_size
121
ie.text_sha1 = base_ie.text_sha1
122
ie.symlink_target = base_ie.symlink_target
123
if ie.executable == base_ie.executable:
124
ie.revision = base_ie.revision
126
blob = lookup_object(hexsha)
128
blob = lookup_object(hexsha)
129
if ie.kind == "symlink":
131
ie.symlink_target = blob.data
135
ie.text_size = len(blob.data)
136
ie.text_sha1 = osutils.sha_string(blob.data)
137
# Check what revision we should store
139
for pinv in parent_invs:
140
if pinv.revision_id == base_inv.revision_id:
149
if pie.text_sha1 == ie.text_sha1 and pie.executable == ie.executable and pie.symlink_target == ie.symlink_target:
150
# found a revision in one of the parents to use
151
ie.revision = pie.revision
153
parent_keys.append((file_id, pie.revision))
154
if ie.revision is None:
155
# Need to store a new revision
156
ie.revision = revision_id
157
assert file_id is not None
158
assert ie.revision is not None
159
texts.insert_record_stream([FulltextContentFactory((file_id, ie.revision), tuple(parent_keys), ie.text_sha1, blob.data)])
160
shamap = [(hexsha, "blob", (ie.file_id, ie.revision))]
163
if file_id in base_inv:
164
old_path = base_inv.id2path(file_id)
167
invdelta = [(old_path, path, file_id, ie)]
168
invdelta.extend(remove_disappeared_children(base_inv, base_ie, []))
169
return (invdelta, shamap)
172
def import_git_submodule(texts, mapping, path, hexsha, base_inv, parent_id,
173
revision_id, parent_invs, shagitmap, lookup_object):
174
raise NotImplementedError(import_git_submodule)
177
def remove_disappeared_children(base_inv, base_ie, existing_children):
178
if base_ie is None or base_ie.kind != 'directory':
181
deletable = [v for k,v in base_ie.children.iteritems() if k not in existing_children]
184
ret.append((base_inv.id2path(ie.file_id), None, ie.file_id, None))
185
if ie.kind == "directory":
186
deletable.extend(ie.children.values())
190
def import_git_tree(texts, mapping, path, hexsha, base_inv, parent_id,
191
revision_id, parent_invs, shagitmap, lookup_object):
192
"""Import a git tree object into a bzr repository.
194
:param texts: VersionedFiles object to add to
195
:param path: Path in the tree
196
:param tree: A git tree object
197
:param base_inv: Base inventory against which to return inventory delta
198
:return: Inventory delta for this subtree
201
file_id = mapping.generate_file_id(path)
202
# We just have to hope this is indeed utf-8:
203
ie = InventoryDirectory(file_id, urlutils.basename(path.decode("utf-8")),
206
base_ie = base_inv[file_id]
208
# Newly appeared here
210
ie.revision = revision_id
211
texts.add_lines((file_id, ie.revision), (), [])
212
invdelta.append((None, path, file_id, ie))
214
# See if this has changed at all
216
base_sha = shagitmap.lookup_tree(file_id, base_inv.revision_id)
220
if base_sha == hexsha:
221
# If nothing has changed since the base revision, we're done
223
if base_ie.kind != "directory":
224
ie.revision = revision_id
225
texts.add_lines((ie.file_id, ie.revision), (), [])
226
invdelta.append((base_inv.id2path(ie.file_id), path, ie.file_id, ie))
227
# Remember for next time
228
existing_children = set()
231
tree = lookup_object(hexsha)
232
for mode, name, child_hexsha in tree.entries():
233
basename = name.decode("utf-8")
234
existing_children.add(basename)
235
child_path = osutils.pathjoin(path, name)
236
if stat.S_ISDIR(mode):
237
subinvdelta, grandchildmodes, subshamap = import_git_tree(
238
texts, mapping, child_path, child_hexsha, base_inv,
239
file_id, revision_id, parent_invs, shagitmap, lookup_object)
240
invdelta.extend(subinvdelta)
241
child_modes.update(grandchildmodes)
242
shamap.extend(subshamap)
243
elif S_ISGITLINK(mode): # submodule
244
subinvdelta, grandchildmodes, subshamap = import_git_submodule(
245
texts, mapping, child_path, child_hexsha, base_inv,
246
file_id, revision_id, parent_invs, shagitmap, lookup_object)
247
invdelta.extend(subinvdelta)
248
child_modes.update(grandchildmodes)
249
shamap.extend(subshamap)
251
subinvdelta, subshamap = import_git_blob(texts, mapping,
252
child_path, child_hexsha, base_inv, file_id, revision_id,
253
parent_invs, shagitmap, lookup_object,
254
mode_is_executable(mode), stat.S_ISLNK(mode))
255
invdelta.extend(subinvdelta)
256
shamap.extend(subshamap)
257
if mode not in (stat.S_IFDIR, DEFAULT_FILE_MODE,
258
stat.S_IFLNK, DEFAULT_FILE_MODE|0111):
259
child_modes[child_path] = mode
260
# Remove any children that have disappeared
261
invdelta.extend(remove_disappeared_children(base_inv, base_ie, existing_children))
262
shamap.append((hexsha, "tree", (file_id, revision_id)))
263
return invdelta, child_modes, shamap
266
def import_git_objects(repo, mapping, object_iter, target_git_object_retriever,
268
"""Import a set of git objects into a bzr repository.
270
:param repo: Target Bazaar repository
271
:param mapping: Mapping to use
272
:param object_iter: Iterator over Git objects.
274
def lookup_object(sha):
276
return object_iter[sha]
278
return target_git_object_retriever[sha]
279
# TODO: a more (memory-)efficient implementation of this
285
parent_invs_cache = LRUCache(50)
286
# Find and convert commit objects
289
pb.update("finding revisions to fetch", len(graph), None)
291
assert isinstance(head, str)
293
o = lookup_object(head)
296
if isinstance(o, Commit):
297
rev = mapping.import_commit(o)
298
if repo.has_revision(rev.revision_id):
300
squash_revision(repo, rev)
301
root_trees[rev.revision_id] = o.tree
302
revisions[rev.revision_id] = rev
303
graph.append((rev.revision_id, rev.parent_ids))
304
target_git_object_retriever._idmap.add_entry(o.id, "commit",
305
(rev.revision_id, o.tree))
306
heads.extend([p for p in o.parents if p not in checked])
307
elif isinstance(o, Tag):
308
heads.append(o.object[1])
310
trace.warning("Unable to import head object %r" % o)
312
# Order the revisions
313
# Create the inventory objects
314
for i, revid in enumerate(topo_sort(graph)):
316
pb.update("fetching revisions", i, len(graph))
317
rev = revisions[revid]
318
# We have to do this here, since we have to walk the tree and
319
# we need to make sure to import the blobs / trees with the right
320
# path; this may involve adding them more than once.
322
for parent_id in rev.parent_ids:
324
parent_invs.append(parent_invs_cache[parent_id])
326
parent_inv = repo.get_inventory(parent_id)
327
parent_invs.append(parent_inv)
328
parent_invs_cache[parent_id] = parent_inv
329
if parent_invs == []:
330
base_inv = Inventory(root_id=None)
332
base_inv = parent_invs[0]
333
inv_delta, unusual_modes, shamap = import_git_tree(repo.texts,
334
mapping, "", root_trees[revid], base_inv, None, revid,
335
parent_invs, target_git_object_retriever._idmap, lookup_object)
336
target_git_object_retriever._idmap.add_entries(shamap)
337
if unusual_modes != {}:
338
for path, mode in unusual_modes.iteritems():
339
warn_unusual_mode(rev.foreign_revid, path, mode)
340
mapping.import_unusual_file_modes(rev, unusual_modes)
342
basis_id = rev.parent_ids[0]
344
basis_id = NULL_REVISION
345
rev.inventory_sha1, inv = repo.add_inventory_by_delta(basis_id,
346
inv_delta, rev.revision_id, rev.parent_ids)
347
parent_invs_cache[rev.revision_id] = inv
348
repo.add_revision(rev.revision_id, rev)
349
if "verify" in debug.debug_flags:
350
new_unusual_modes = mapping.export_unusual_file_modes(rev)
351
if new_unusual_modes != unusual_modes:
352
raise AssertionError("unusual modes don't match: %r != %r" % (unusual_modes, new_unusual_modes))
353
objs = inventory_to_tree_and_blobs(inv, repo.texts, mapping, unusual_modes)
354
for sha1, newobj, path in objs:
355
assert path is not None
356
oldobj = tree_lookup_path(lookup_object, root_trees[revid], path)
358
raise AssertionError("%r != %r in %s" % (oldobj, newobj, path))
360
target_git_object_retriever._idmap.commit()
17
from bzrlib.errors import InvalidRevisionId
18
from bzrlib.repository import InterRepository
19
from bzrlib.trace import info
21
from bzrlib.plugins.git.repository import LocalGitRepository, GitRepository, GitFormat
22
from bzrlib.plugins.git.remote import RemoteGitRepository
24
from cStringIO import StringIO
27
class BzrFetchGraphWalker(object):
29
def __init__(self, repository, mapping):
30
self.repository = repository
31
self.mapping = mapping
33
self.heads = set(repository.all_revision_ids())
37
revid = self.mapping.revision_id_foreign_to_bzr(sha)
40
def remove(self, revid):
43
self.heads.remove(revid)
44
if revid in self.parents:
45
for p in self.parents[revid]:
50
ret = self.heads.pop()
51
ps = self.repository.get_parent_map([ret])[ret]
52
self.parents[ret] = ps
53
self.heads.update([p for p in ps if not p in self.done])
56
return self.mapping.revision_id_bzr_to_foreign(ret)
57
except InvalidRevisionId:
62
def import_git_object(repo, object):
63
raise NotImplementedError(import_git_object)
363
66
class InterGitRepository(InterRepository):
365
_matching_repo_format = GitRepositoryFormat()
68
_matching_repo_format = GitFormat()
368
71
def _get_repo_format_to_test():
372
75
"""See InterRepository.copy_content."""
373
76
self.fetch(revision_id, pb, find_ghosts=False)
375
def fetch(self, revision_id=None, pb=None, find_ghosts=False, mapping=None,
377
self.fetch_refs(revision_id=revision_id, pb=pb, find_ghosts=find_ghosts,
378
mapping=mapping, fetch_spec=fetch_spec)
381
class InterGitNonGitRepository(InterGitRepository):
382
"""Base InterRepository that copies revisions from a Git into a non-Git
385
def fetch_refs(self, revision_id=None, pb=None, find_ghosts=False,
386
mapping=None, fetch_spec=None):
78
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
387
80
if mapping is None:
388
81
mapping = self.source.get_mapping()
389
if revision_id is not None:
390
interesting_heads = [revision_id]
391
elif fetch_spec is not None:
392
interesting_heads = fetch_spec.heads
394
interesting_heads = None
396
def determine_wants(refs):
398
if interesting_heads is None:
399
ret = [sha for (ref, sha) in refs.iteritems() if not ref.endswith("^{}")]
401
ret = [mapping.revision_id_bzr_to_foreign(revid)[0] for revid in interesting_heads if revid not in (None, NULL_REVISION)]
402
return [rev for rev in ret if not self.target.has_revision(mapping.revision_id_foreign_to_bzr(rev))]
403
self.fetch_objects(determine_wants, mapping, pb)
407
class InterRemoteGitNonGitRepository(InterGitNonGitRepository):
408
"""InterRepository that copies revisions from a remote Git into a non-Git
411
def fetch_objects(self, determine_wants, mapping, pb=None):
412
82
def progress(text):
413
pb.update("git: %s" % text.rstrip("\r\n"), 0, 0)
414
store = BazaarObjectStore(self.target, mapping)
84
pb.note("git: %s" % text)
86
info("git: %s" % text)
87
def determine_wants(heads):
88
if revision_id is None:
91
ret = [mapping.revision_id_bzr_to_foreign(revision_id)]
92
return [rev for rev in ret if not self.target.has_revision(mapping.revision_id_foreign_to_bzr(revision_id))]
93
graph_walker = BzrFetchGraphWalker(self.target, mapping)
415
94
self.target.lock_write()
417
heads = self.target.get_graph().heads(self.target.all_revision_ids())
418
graph_walker = store.get_graph_walker(
419
[store._lookup_revision_sha1(head) for head in heads])
422
def record_determine_wants(heads):
423
wants = determine_wants(heads)
424
recorded_wants.extend(wants)
429
create_pb = pb = ui.ui_factory.nested_progress_bar()
431
self.target.start_write_group()
433
objects_iter = self.source.fetch_objects(
434
record_determine_wants, graph_walker,
435
store.get_raw, progress)
436
import_git_objects(self.target, mapping, objects_iter,
437
store, recorded_wants, pb)
439
self.target.commit_write_group()
96
for o in self.source.fetch_objects(determine_wants, graph_walker, progress):
444
99
self.target.unlock()
447
102
def is_compatible(source, target):
448
103
"""Be compatible with GitRepository."""
449
104
# FIXME: Also check target uses VersionedFile
450
return (isinstance(source, RemoteGitRepository) and
451
target.supports_rich_root() and
452
not isinstance(target, GitRepository))
455
class InterLocalGitNonGitRepository(InterGitNonGitRepository):
456
"""InterRepository that copies revisions from a local Git into a non-Git
459
def fetch_objects(self, determine_wants, mapping, pb=None):
460
wants = determine_wants(self.source._git.get_refs())
463
create_pb = pb = ui.ui_factory.nested_progress_bar()
464
target_git_object_retriever = BazaarObjectStore(self.target, mapping)
466
self.target.lock_write()
468
self.target.start_write_group()
470
import_git_objects(self.target, mapping,
471
self.source._git.object_store,
472
target_git_object_retriever, wants, pb)
474
self.target.commit_write_group()
482
def is_compatible(source, target):
483
"""Be compatible with GitRepository."""
484
# FIXME: Also check target uses VersionedFile
485
return (isinstance(source, LocalGitRepository) and
486
target.supports_rich_root() and
487
not isinstance(target, GitRepository))
490
class InterGitGitRepository(InterGitRepository):
491
"""InterRepository that copies between Git repositories."""
493
def fetch_refs(self, revision_id=None, pb=None, find_ghosts=False,
494
mapping=None, fetch_spec=None, branches=None):
496
mapping = self.source.get_mapping()
498
trace.info("git: %s", text)
500
if revision_id is not None:
501
args = [mapping.revision_id_bzr_to_foreign(revision_id)[0]]
502
elif fetch_spec is not None:
503
args = [mapping.revision_id_bzr_to_foreign(revid)[0] for revid in fetch_spec.heads]
504
if branches is not None:
505
determine_wants = lambda x: [x[y] for y in branches if not x[y] in r.object_store]
506
elif fetch_spec is None and revision_id is None:
507
determine_wants = r.object_store.determine_wants_all
509
determine_wants = lambda x: [y for y in args if not y in r.object_store]
511
graphwalker = r.get_graph_walker()
512
f, commit = r.object_store.add_thin_pack()
514
refs = self.source.fetch_pack(determine_wants, graphwalker,
523
def is_compatible(source, target):
524
"""Be compatible with GitRepository."""
525
return (isinstance(source, GitRepository) and
526
isinstance(target, GitRepository))
105
return isinstance(source, LocalGitRepository) and target.supports_rich_root()
added
removed
fetch.py
