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 bzrlib import osutils, ui, urlutils
18
from bzrlib.errors import InvalidRevisionId
19
from bzrlib.inventory import Inventory
20
from bzrlib.repository import InterRepository
21
from bzrlib.trace import info
17
from cStringIO import StringIO
19
from dulwich.client import (
20
SimpleFetchGraphWalker,
22
from dulwich.objects import (
32
from bzrlib.errors import (
36
from bzrlib.inventory import (
39
from bzrlib.repository import (
22
42
from bzrlib.tsort import topo_sort
24
from bzrlib.plugins.git import git
44
from bzrlib.plugins.git.converter import (
25
47
from bzrlib.plugins.git.repository import (
30
from bzrlib.plugins.git.remote import RemoteGitRepository
32
from dulwich.objects import Commit
34
from cStringIO import StringIO
52
from bzrlib.plugins.git.remote import (
37
57
class BzrFetchGraphWalker(object):
58
"""GraphWalker implementation that uses a Bazaar repository."""
39
60
def __init__(self, repository, mapping):
40
61
self.repository = repository
63
87
self.heads.update([p for p in ps if not p in self.done])
66
return self.mapping.revision_id_bzr_to_foreign(ret)
90
return self.mapping.revision_id_bzr_to_foreign(ret)[0]
67
91
except InvalidRevisionId:
72
def import_git_blob(repo, mapping, path, blob, inv, parent_invs, executable):
96
def import_git_blob(texts, mapping, path, blob, inv, parent_invs, shagitmap,
73
98
"""Import a git blob object into a bzr repository.
75
:param repo: bzr repository
100
:param texts: VersionedFiles to add to
76
101
:param path: Path in the tree
77
102
:param blob: A git blob
79
104
file_id = mapping.generate_file_id(path)
80
105
text_revision = inv.revision_id
81
repo.texts.add_lines((file_id, text_revision),
106
assert file_id is not None
107
assert text_revision is not None
108
texts.add_lines((file_id, text_revision),
82
109
[(file_id, p[file_id].revision) for p in parent_invs if file_id in p],
83
110
osutils.split_lines(blob.data))
84
111
ie = inv.add_path(path, "file", file_id)
86
113
ie.text_size = len(blob.data)
87
114
ie.text_sha1 = osutils.sha_string(blob.data)
88
115
ie.executable = executable
91
def import_git_tree(repo, mapping, path, tree, inv, parent_invs, lookup_object):
116
shagitmap.add_entry(blob.sha().hexdigest(), "blob",
117
(ie.file_id, ie.revision))
120
def import_git_tree(texts, mapping, path, tree, inv, parent_invs, shagitmap,
92
122
"""Import a git tree object into a bzr repository.
94
:param repo: A Bzr repository object
124
:param texts: VersionedFiles object to add to
95
125
:param path: Path in the tree
96
126
:param tree: A git tree object
97
127
:param inv: Inventory object
99
129
file_id = mapping.generate_file_id(path)
100
130
text_revision = inv.revision_id
101
repo.texts.add_lines((file_id, text_revision),
131
texts.add_lines((file_id, text_revision),
102
132
[(file_id, p[file_id].revision) for p in parent_invs if file_id in p],
104
134
ie = inv.add_path(path, "directory", file_id)
105
135
ie.revision = text_revision
136
shagitmap.add_entry(tree.id, "tree", (file_id, text_revision))
106
137
for mode, name, hexsha in tree.entries():
107
138
entry_kind = (mode & 0700000) / 0100000
108
139
basename = name.decode("utf-8")
110
141
child_path = name
112
143
child_path = urlutils.join(path, name)
144
obj = lookup_object(hexsha)
113
145
if entry_kind == 0:
114
tree = lookup_object(hexsha)
115
import_git_tree(repo, mapping, child_path, tree, inv, parent_invs, lookup_object)
146
import_git_tree(texts, mapping, child_path, obj, inv, parent_invs,
147
shagitmap, lookup_object)
116
148
elif entry_kind == 1:
117
blob = lookup_object(hexsha)
118
149
fs_mode = mode & 0777
119
import_git_blob(repo, mapping, child_path, blob, inv, parent_invs, bool(fs_mode & 0111))
150
import_git_blob(texts, mapping, child_path, obj, inv, parent_invs,
151
shagitmap, bool(fs_mode & 0111))
121
153
raise AssertionError("Unknown blob kind, perms=%r." % (mode,))
124
def import_git_objects(repo, mapping, object_iter, pb=None):
156
def import_git_objects(repo, mapping, object_iter, target_git_object_retriever,
125
158
"""Import a set of git objects into a bzr repository.
127
160
:param repo: Bazaar repository
129
162
:param object_iter: Iterator over Git objects.
131
164
# TODO: a more (memory-)efficient implementation of this
133
for i, o in enumerate(object_iter):
135
pb.update("fetching objects", i)
140
168
# Find and convert commit objects
141
for o in objects.itervalues():
169
for o in object_iter.iterobjects():
142
170
if isinstance(o, Commit):
143
171
rev = mapping.import_commit(o)
144
root_trees[rev.revision_id] = objects[o.tree]
172
root_trees[rev.revision_id] = object_iter[o.tree]
145
173
revisions[rev.revision_id] = rev
146
174
graph.append((rev.revision_id, rev.parent_ids))
175
target_git_object_retriever._idmap.add_entry(o.sha().hexdigest(),
176
"commit", (rev.revision_id, o._tree))
147
177
# Order the revisions
148
178
# Create the inventory objects
149
179
for i, revid in enumerate(topo_sort(graph)):
157
187
inv = Inventory()
158
188
inv.revision_id = rev.revision_id
159
189
def lookup_object(sha):
162
return reconstruct_git_object(repo, mapping, sha)
190
if sha in object_iter:
191
return object_iter[sha]
192
return target_git_object_retriever[sha]
163
193
parent_invs = [repo.get_inventory(r) for r in rev.parent_ids]
164
import_git_tree(repo, mapping, "", root_tree, inv, parent_invs, lookup_object)
194
import_git_tree(repo.texts, mapping, "", root_tree, inv, parent_invs,
195
target_git_object_retriever._idmap, lookup_object)
165
196
repo.add_revision(rev.revision_id, rev, inv)
168
def reconstruct_git_commit(repo, rev):
169
raise NotImplementedError(self.reconstruct_git_commit)
172
def reconstruct_git_object(repo, mapping, sha):
174
revid = mapping.revision_id_foreign_to_bzr(sha)
176
rev = repo.get_revision(revid)
177
except NoSuchRevision:
180
return reconstruct_git_commit(rev)
184
raise KeyError("No such object %s" % sha)
187
class InterGitRepository(InterRepository):
197
target_git_object_retriever._idmap.commit()
200
class InterGitNonGitRepository(InterRepository):
189
202
_matching_repo_format = GitFormat()
196
209
"""See InterRepository.copy_content."""
197
210
self.fetch(revision_id, pb, find_ghosts=False)
199
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
202
mapping = self.source.get_mapping()
212
def fetch_objects(self, determine_wants, mapping, pb=None):
203
213
def progress(text):
204
pb.note("git: %s", text)
205
def determine_wants(heads):
206
if revision_id is None:
209
ret = [mapping.revision_id_bzr_to_foreign(revision_id)]
210
return [rev for rev in ret if not self.target.has_revision(mapping.revision_id_foreign_to_bzr(rev))]
214
pb.update("git: %s" % text.rstrip("\r\n"), 0, 0)
211
215
graph_walker = BzrFetchGraphWalker(self.target, mapping)
214
218
create_pb = pb = ui.ui_factory.nested_progress_bar()
219
target_git_object_retriever = GitObjectConverter(self.target, mapping)
216
222
self.target.lock_write()
218
224
self.target.start_write_group()
220
import_git_objects(self.target, mapping,
221
iter(self.source.fetch_objects(determine_wants, graph_walker,
226
objects_iter = self.source.fetch_objects(determine_wants,
228
target_git_object_retriever.__getitem__,
230
import_git_objects(self.target, mapping, objects_iter,
231
target_git_object_retriever, pb)
224
233
self.target.commit_write_group()
229
238
create_pb.finished()
240
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
241
mapping=None, fetch_spec=None):
242
self.fetch_refs(revision_id=revision_id, pb=pb, find_ghosts=find_ghosts,
243
mapping=mapping, fetch_spec=fetch_spec)
245
def fetch_refs(self, revision_id=None, pb=None, find_ghosts=False,
246
mapping=None, fetch_spec=None):
248
mapping = self.source.get_mapping()
249
if revision_id is not None:
250
interesting_heads = [revision_id]
251
elif fetch_spec is not None:
252
interesting_heads = fetch_spec.heads
254
interesting_heads = None
256
def determine_wants(refs):
258
if interesting_heads is None:
259
ret = [sha for (ref, sha) in refs.iteritems() if not ref.endswith("^{}")]
261
ret = [mapping.revision_id_bzr_to_foreign(revid)[0] for revid in interesting_heads]
262
return [rev for rev in ret if not self.target.has_revision(mapping.revision_id_foreign_to_bzr(rev))]
263
self.fetch_objects(determine_wants, mapping, pb)
232
267
def is_compatible(source, target):
233
268
"""Be compatible with GitRepository."""
234
269
# FIXME: Also check target uses VersionedFile
235
270
return (isinstance(source, GitRepository) and
236
target.supports_rich_root())
271
target.supports_rich_root() and
272
not isinstance(target, GitRepository))
275
class InterGitRepository(InterRepository):
277
_matching_repo_format = GitFormat()
280
def _get_repo_format_to_test():
283
def copy_content(self, revision_id=None, pb=None):
284
"""See InterRepository.copy_content."""
285
self.fetch(revision_id, pb, find_ghosts=False)
287
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
288
mapping=None, fetch_spec=None):
290
mapping = self.source.get_mapping()
292
trace.info("git: %s", text)
294
if revision_id is not None:
295
args = [mapping.revision_id_bzr_to_foreign(revision_id)[0]]
296
elif fetch_spec is not None:
297
args = [mapping.revision_id_bzr_to_foreign(revid)[0] for revid in fetch_spec.heads]
298
if fetch_spec is None and revision_id is None:
299
determine_wants = r.object_store.determine_wants_all
301
determine_wants = lambda x: [y for y in args if not y in r.object_store]
303
graphwalker = SimpleFetchGraphWalker(r.heads().values(), r.get_parents)
304
f, commit = r.object_store.add_pack()
306
self.source._git.fetch_pack(path, determine_wants, graphwalker, f.write, progress)
314
def is_compatible(source, target):
315
"""Be compatible with GitRepository."""
316
return (isinstance(source, GitRepository) and
317
isinstance(target, GitRepository))