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
18
from bzrlib.errors import InvalidRevisionId
19
from bzrlib.inventory import Inventory
20
from bzrlib.repository import InterRepository
21
from bzrlib.trace import info
23
from bzrlib.plugins.git import git
24
from bzrlib.plugins.git.repository import LocalGitRepository, GitRepository, GitFormat
25
from bzrlib.plugins.git.remote import RemoteGitRepository
27
from dulwich.objects import Commit
17
29
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 (
42
from bzrlib.tsort import topo_sort
44
from bzrlib.plugins.git.converter import (
47
from bzrlib.plugins.git.repository import (
52
from bzrlib.plugins.git.remote import (
57
32
class BzrFetchGraphWalker(object):
58
"""GraphWalker implementation that uses a Bazaar repository."""
60
34
def __init__(self, repository, mapping):
61
35
self.repository = repository
87
58
self.heads.update([p for p in ps if not p in self.done])
90
return self.mapping.revision_id_bzr_to_foreign(ret)[0]
61
return self.mapping.revision_id_bzr_to_foreign(ret)
91
62
except InvalidRevisionId:
96
def import_git_blob(texts, mapping, path, blob, inv, parent_invs, shagitmap,
67
def import_git_blob(repo, mapping, path, blob):
98
68
"""Import a git blob object into a bzr repository.
100
:param texts: VersionedFiles to add to
70
:param repo: bzr repository
101
71
:param path: Path in the tree
102
72
:param blob: A git blob
104
74
file_id = mapping.generate_file_id(path)
105
text_revision = inv.revision_id
106
assert file_id is not None
107
assert text_revision is not None
108
texts.add_lines((file_id, text_revision),
109
[(file_id, p[file_id].revision) for p in parent_invs if file_id in p],
75
repo.texts.add_lines((file_id, blob.id),
110
77
osutils.split_lines(blob.data))
111
ie = inv.add_path(path, "file", file_id)
112
ie.revision = text_revision
113
ie.text_size = len(blob.data)
114
ie.text_sha1 = osutils.sha_string(blob.data)
115
ie.executable = executable
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,
78
inv.add_path(path, "file", file_id)
81
def import_git_tree(repo, mapping, path, tree, inv, lookup_object):
122
82
"""Import a git tree object into a bzr repository.
124
:param texts: VersionedFiles object to add to
84
:param repo: A Bzr repository object
125
85
:param path: Path in the tree
126
86
:param tree: A git tree object
127
87
:param inv: Inventory object
129
89
file_id = mapping.generate_file_id(path)
130
text_revision = inv.revision_id
131
texts.add_lines((file_id, text_revision),
132
[(file_id, p[file_id].revision) for p in parent_invs if file_id in p],
90
repo.texts.add_lines((file_id, tree.id),
134
ie = inv.add_path(path, "directory", file_id)
135
ie.revision = text_revision
136
shagitmap.add_entry(tree.id, "tree", (file_id, text_revision))
93
inv.add_path(path, "directory", file_id)
137
94
for mode, name, hexsha in tree.entries():
138
95
entry_kind = (mode & 0700000) / 0100000
139
96
basename = name.decode("utf-8")
143
100
child_path = urlutils.join(path, name)
144
obj = lookup_object(hexsha)
145
101
if entry_kind == 0:
146
import_git_tree(texts, mapping, child_path, obj, inv, parent_invs,
147
shagitmap, lookup_object)
102
import_git_tree(repo, mapping, child_path, lookup_object, inv)
148
103
elif entry_kind == 1:
149
fs_mode = mode & 0777
150
import_git_blob(texts, mapping, child_path, obj, inv, parent_invs,
151
shagitmap, bool(fs_mode & 0111))
104
import_git_blob(repo, mapping, child_path, lookup_object, inv)
153
106
raise AssertionError("Unknown blob kind, perms=%r." % (mode,))
156
def import_git_objects(repo, mapping, object_iter, target_git_object_retriever,
109
def import_git_objects(repo, mapping, object_iter):
158
110
"""Import a set of git objects into a bzr repository.
160
112
:param repo: Bazaar repository
162
114
:param object_iter: Iterator over Git objects.
164
116
# TODO: a more (memory-)efficient implementation of this
118
for o in object_iter:
168
121
# Find and convert commit objects
169
for o in object_iter.iterobjects():
122
for o in objects.iterkeys():
170
123
if isinstance(o, Commit):
171
124
rev = mapping.import_commit(o)
172
root_trees[rev.revision_id] = object_iter[o.tree]
173
revisions[rev.revision_id] = rev
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))
177
# Order the revisions
125
root_trees[rev] = objects[o.tree_sha]
178
126
# Create the inventory objects
179
for i, revid in enumerate(topo_sort(graph)):
181
pb.update("fetching revisions", i, len(graph))
182
root_tree = root_trees[revid]
183
rev = revisions[revid]
127
for rev, root_tree in root_trees.iteritems():
184
128
# We have to do this here, since we have to walk the tree and
185
129
# we need to make sure to import the blobs / trees with the riht
186
130
# path; this may involve adding them more than once.
187
131
inv = Inventory()
188
inv.revision_id = rev.revision_id
189
132
def lookup_object(sha):
190
if sha in object_iter:
191
return object_iter[sha]
192
return target_git_object_retriever[sha]
193
parent_invs = [repo.get_inventory(r) for r in rev.parent_ids]
194
import_git_tree(repo.texts, mapping, "", root_tree, inv, parent_invs,
195
target_git_object_retriever._idmap, lookup_object)
135
return reconstruct_git_object(repo, mapping, sha)
136
import_git_tree(repo, mapping, "", tree, inv, lookup_object)
196
137
repo.add_revision(rev.revision_id, rev, inv)
197
target_git_object_retriever._idmap.commit()
200
class InterGitNonGitRepository(InterRepository):
140
def reconstruct_git_commit(repo, rev):
141
raise NotImplementedError(self.reconstruct_git_commit)
144
def reconstruct_git_object(repo, mapping, sha):
146
revid = mapping.revision_id_foreign_to_bzr(sha)
148
rev = repo.get_revision(revid)
149
except NoSuchRevision:
152
return reconstruct_git_commit(rev)
156
raise KeyError("No such object %s" % sha)
159
class InterGitRepository(InterRepository):
202
161
_matching_repo_format = GitFormat()
209
168
"""See InterRepository.copy_content."""
210
169
self.fetch(revision_id, pb, find_ghosts=False)
212
def fetch_objects(self, determine_wants, mapping, pb=None):
171
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
174
mapping = self.source.get_mapping()
213
175
def progress(text):
214
pb.update("git: %s" % text.rstrip("\r\n"), 0, 0)
177
pb.note("git: %s" % text)
179
info("git: %s" % text)
180
def determine_wants(heads):
181
if revision_id is None:
184
ret = [mapping.revision_id_bzr_to_foreign(revision_id)]
185
return [rev for rev in ret if not self.target.has_revision(mapping.revision_id_foreign_to_bzr(rev))]
215
186
graph_walker = BzrFetchGraphWalker(self.target, mapping)
218
create_pb = pb = ui.ui_factory.nested_progress_bar()
219
target_git_object_retriever = GitObjectConverter(self.target, mapping)
187
self.target.lock_write()
222
self.target.lock_write()
224
self.target.start_write_group()
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)
233
self.target.commit_write_group()
189
import_git_objects(self.target, mapping,
190
self.source.fetch_objects(determine_wants, graph_walker,
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)
267
196
def is_compatible(source, target):
268
197
"""Be compatible with GitRepository."""
269
198
# FIXME: Also check target uses VersionedFile
270
return (isinstance(source, GitRepository) and
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))
199
return (isinstance(source, LocalGitRepository) and
200
target.supports_rich_root())