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- Committer: David Allouche
- Date: 2007-12-29 22:02:30 UTC
- mto: (0.312.1 master) (6883.23.1 bundle-git)
- mto: This revision was merged to the branch mainline in revision 6960.
- Revision ID: ddaa@canonical.com-20071229220230-ejqu4l2mb1efqu37
Remove some experimental cruft.
- files added:
- INSTALL
- files removed:
- HACKING
- foreign
- notes
- files renamed:
- branch.py => git_branch.py
- dir.py => git_dir.py
- repository.py => git_repository.py
- mapping.py => ids.py
- tests/test_branch.py => tests/test_git_branch.py
- tests/test_dir.py => tests/test_git_dir.py
- tests/test_repository.py => tests/test_git_repository.py
- tests/test_mapping.py => tests/test_ids.py
- files modified:
- .bzrignore
added
removed
git_repository.py
1
1
# Copyright (C) 2007 Canonical Ltd
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# Copyright (C) 2008-2009 Jelmer Vernooij <jelmer@samba.org>
3
2
#
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3
# This program is free software; you can redistribute it and/or modify
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4
# it under the terms of the GNU General Public License as published by
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16
18
17
"""An adapter between a Git Repository and a Bazaar Branch"""
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18
20
import bzrlib
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19
from bzrlib import (
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deprecated_graph,
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21
errors,
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graph,
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22
inventory,
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23
osutils,
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24
repository,
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25
revision,
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revisiontree,
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ui,
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27
urlutils,
31
28
)
32
from bzrlib.foreign import (
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ForeignRepository,
34
)
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from bzrlib.trace import (
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mutter,
37
)
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from bzrlib.transport import (
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get_transport,
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)
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from bzrlib.plugins.git.foreign import (
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versionedfiles,
44
)
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from bzrlib.plugins.git.mapping import (
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default_mapping,
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inventory_to_tree_and_blobs,
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mapping_registry,
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revision_to_commit,
50
)
51
from bzrlib.plugins.git.versionedfiles import (
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GitTexts,
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)
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55
import dulwich as git
56
import os
57
import time
58
59
60
class GitTags(object):
61
62
def __init__(self, tags):
63
self._tags = tags
64
65
def __iter__(self):
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return iter(self._tags)
67
68
69
class GitRepository(ForeignRepository):
29
30
from bzrlib.plugins.git import (
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ids,
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model,
33
)
34
35
36
class GitRepository(repository.Repository):
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37
"""An adapter to git repositories for bzr."""
71
38
39
# To make bzrlib happy
72
40
_serializer = None
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41
74
42
def __init__(self, gitdir, lockfiles):
75
ForeignRepository.__init__(self, GitRepositoryFormat(), gitdir,
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lockfiles)
77
from bzrlib.plugins.git import fetch, push
78
for optimiser in [fetch.InterRemoteGitNonGitRepository,
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fetch.InterLocalGitNonGitRepository,
80
fetch.InterGitRepository,
81
push.InterToGitRepository]:
82
repository.InterRepository.register_optimiser(optimiser)
43
self.bzrdir = gitdir
44
self.control_files = lockfiles
45
gitdirectory = gitdir.transport.local_abspath('.')
46
self._git = model.GitModel(gitdirectory)
47
self._revision_cache = {}
48
self._blob_cache = {}
49
self._entry_revision_cache = {}
50
51
def _ancestor_revisions(self, revision_ids):
52
if revision_ids is not None:
53
git_revisions = [gitrevid_from_bzr(r) for r in revision_ids]
54
else:
55
git_revisions = None
56
for lines in self._git.ancestor_lines(git_revisions):
57
yield self._parse_rev(lines)
58
# print "fetched ancestors:", git_revisions
83
59
84
60
def is_shared(self):
85
61
return True
86
62
87
63
def supports_rich_root(self):
88
return True
89
90
def _warn_if_deprecated(self):
91
# This class isn't deprecated
92
pass
93
94
def get_mapping(self):
95
return default_mapping
96
97
def make_working_trees(self):
98
return True
99
100
101
class LocalGitRepository(GitRepository):
102
"""Git repository on the file system."""
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104
def __init__(self, gitdir, lockfiles):
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# FIXME: This also caches negatives. Need to be more careful
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# about this once we start writing to git
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self._parents_provider = graph.CachingParentsProvider(self)
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GitRepository.__init__(self, gitdir, lockfiles)
109
self.base = gitdir.root_transport.base
110
self._git = gitdir._git
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self.texts = None
112
self.signatures = versionedfiles.VirtualSignatureTexts(self)
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self.revisions = versionedfiles.VirtualRevisionTexts(self)
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self.inventories = versionedfiles.VirtualInventoryTexts(self)
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self.texts = GitTexts(self)
116
self.tags = GitTags(self._git.get_tags())
117
118
def all_revision_ids(self):
119
ret = set([revision.NULL_REVISION])
120
heads = self._git.heads()
121
if heads == {}:
122
return ret
123
bzr_heads = [self.get_mapping().revision_id_foreign_to_bzr(h) for h in heads.itervalues()]
124
ret = set(bzr_heads)
125
graph = self.get_graph()
126
for rev, parents in graph.iter_ancestry(bzr_heads):
127
ret.add(rev)
128
return ret
129
130
#def get_revision_delta(self, revision_id):
131
# parent_revid = self.get_revision(revision_id).parent_ids[0]
132
# diff = self._git.diff(ids.convert_revision_id_bzr_to_git(parent_revid),
133
# ids.convert_revision_id_bzr_to_git(revision_id))
134
135
def _make_parents_provider(self):
136
"""See Repository._make_parents_provider()."""
137
return self._parents_provider
138
139
def get_parent_map(self, revids):
140
parent_map = {}
141
mutter("get_parent_map(%r)", revids)
142
for revision_id in revids:
143
assert isinstance(revision_id, str)
144
if revision_id == revision.NULL_REVISION:
145
parent_map[revision_id] = ()
146
continue
147
hexsha, mapping = self.lookup_git_revid(revision_id)
148
commit = self._git.commit(hexsha)
149
if commit is None:
150
continue
151
else:
152
parent_map[revision_id] = [mapping.revision_id_foreign_to_bzr(p) for p in commit.parents]
153
return parent_map
154
155
def get_ancestry(self, revision_id, topo_sorted=True):
156
"""See Repository.get_ancestry().
157
"""
158
if revision_id is None:
159
return [None, revision.NULL_REVISION] + self._all_revision_ids()
160
assert isinstance(revision_id, str)
161
ancestry = []
162
graph = self.get_graph()
163
for rev, parents in graph.iter_ancestry([revision_id]):
164
ancestry.append(rev)
165
ancestry.reverse()
166
return [None] + ancestry
167
168
def import_revision_gist(self, source, revid, parent_lookup):
169
"""Import the gist of a revision into this Git repository.
170
171
"""
172
objects = []
173
rev = source.get_revision(revid)
174
for sha, object, path in inventory_to_tree_and_blobs(source, None, revid):
175
if path == "":
176
tree_sha = sha
177
objects.append((object, path))
178
commit = revision_to_commit(rev, tree_sha, parent_lookup)
179
objects.append((commit, None))
180
self._git.object_store.add_objects(objects)
181
return commit.sha().hexdigest()
182
183
def dfetch(self, source, stop_revision):
184
"""Import the gist of the ancestry of a particular revision."""
185
if stop_revision is None:
186
raise NotImplementedError
187
revidmap = {}
188
gitidmap = {}
189
def parent_lookup(revid):
190
try:
191
return gitidmap[revid]
192
except KeyError:
193
return self.lookup_git_revid(revid)[0]
194
todo = []
195
source.lock_write()
196
try:
197
graph = source.get_graph()
198
ancestry = [x for x in source.get_ancestry(stop_revision) if x is not None]
199
for revid in graph.iter_topo_order(ancestry):
200
if not self.has_revision(revid):
201
todo.append(revid)
202
pb = ui.ui_factory.nested_progress_bar()
203
try:
204
for i, revid in enumerate(todo):
205
pb.update("pushing revisions", i, len(todo))
206
git_commit = self.import_revision_gist(source, revid,
207
parent_lookup)
208
gitidmap[revid] = git_commit
209
git_revid = self.get_mapping().revision_id_foreign_to_bzr(
210
git_commit)
211
revidmap[revid] = git_revid
212
finally:
213
pb.finished()
214
source.fetch(self, revision_id=revidmap[stop_revision])
215
finally:
216
source.unlock()
217
return revidmap
64
return False
65
66
def get_revision_graph(self, revision_id=None):
67
result = {}
68
if revision_id is not None:
69
param = [ids.convert_revision_id_bzr_to_git(revision_id)]
70
else:
71
param = None
72
git_graph = self._git.get_revision_graph(param)
73
# print "fetched revision graph:", param
74
for node, parents in git_graph.iteritems():
75
bzr_node = ids.convert_revision_id_git_to_bzr(node)
76
bzr_parents = [ids.convert_revision_id_git_to_bzr(n)
77
for n in parents]
78
result[bzr_node] = bzr_parents
79
return result
80
81
def get_revision_graph_with_ghosts(self, revision_ids=None):
82
graph = deprecated_graph.Graph()
83
if revision_ids is not None:
84
revision_ids = [ids.convert_revision_id_bzr_to_git(r)
85
for r in revision_ids]
86
git_graph = self._git.get_revision_graph(revision_ids)
87
# print "fetched revision graph (ghosts):", revision_ids
88
for node, parents in git_graph.iteritems():
89
bzr_node = ids.convert_revision_id_git_to_bzr(node)
90
bzr_parents = [ids.convert_revision_id_git_to_bzr(n)
91
for n in parents]
92
93
graph.add_node(bzr_node, bzr_parents)
94
return graph
95
96
def get_ancestry(self, revision_id):
97
param = [ids.convert_revision_id_bzr_to_git(revision_id)]
98
git_ancestry = self._git.get_ancestry(param)
99
# print "fetched ancestry:", param
100
return [None] + [
101
ids.convert_revision_id_git_to_bzr(git_id)
102
for git_id in git_ancestry]
218
103
219
104
def get_signature_text(self, revision_id):
220
105
raise errors.NoSuchRevision(self, revision_id)
221
106
222
def lookup_revision_id(self, revid):
223
"""Lookup a revision id.
224
225
:param revid: Bazaar revision id.
226
:return: Tuple with git revisionid and mapping.
227
"""
228
# Yes, this doesn't really work, but good enough as a stub
229
return osutils.sha(rev_id).hexdigest(), self.get_mapping()
230
231
def has_signature_for_revision_id(self, revision_id):
232
return False
233
234
def lookup_git_revid(self, bzr_revid):
235
try:
236
return mapping_registry.revision_id_bzr_to_foreign(bzr_revid)
237
except errors.InvalidRevisionId:
238
raise errors.NoSuchRevision(self, bzr_revid)
107
def get_inventory_xml(self, revision_id):
108
"""See Repository.get_inventory_xml()."""
109
return bzrlib.xml5.serializer_v5.write_inventory_to_string(
110
self.get_inventory(revision_id))
111
112
def get_inventory_sha1(self, revision_id):
113
"""Get the sha1 for the XML representation of an inventory.
114
115
:param revision_id: Revision id of the inventory for which to return
116
the SHA1.
117
:return: XML string
118
"""
119
120
return osutils.sha_string(self.get_inventory_xml(revision_id))
121
122
def get_revision_xml(self, revision_id):
123
"""Return the XML representation of a revision.
124
125
:param revision_id: Revision for which to return the XML.
126
:return: XML string
127
"""
128
return bzrlib.xml5.serializer_v5.write_revision_to_string(
129
self.get_revision(revision_id))
239
130
240
131
def get_revision(self, revision_id):
241
git_commit_id, mapping = self.lookup_git_revid(revision_id)
242
try:
243
commit = self._git.commit(git_commit_id)
244
except KeyError:
245
raise errors.NoSuchRevision(self, revision_id)
132
if revision_id in self._revision_cache:
133
return self._revision_cache[revision_id]
134
git_commit_id = ids.convert_revision_id_bzr_to_git(revision_id)
135
raw = self._git.rev_list([git_commit_id], max_count=1, header=True)
246
136
# print "fetched revision:", git_commit_id
247
revision = mapping.import_commit(commit)
248
assert revision is not None
137
revision = self._parse_rev(raw)
138
self._revision_cache[revision_id] = revision
249
139
return revision
250
140
251
141
def has_revision(self, revision_id):
252
142
try:
253
143
self.get_revision(revision_id)
254
except errors.NoSuchRevision:
144
except NoSuchRevision:
255
145
return False
256
146
else:
257
147
return True
258
148
259
def get_revisions(self, revids):
260
return [self.get_revision(r) for r in revids]
149
def get_revisions(self, revisions):
150
return [self.get_revision(r) for r in revisions]
151
152
@classmethod
153
def _parse_rev(klass, raw):
154
"""Parse a single git revision.
155
156
* The first line is the git commit id.
157
* Following lines conform to the 'name value' structure, until the
158
first blank line.
159
* All lines after the first blank line and until the NULL line have 4
160
leading spaces and constitute the commit message.
161
162
:param raw: sequence of newline-terminated strings, its last item is a
163
single NULL character.
164
:return: a `bzrlib.revision.Revision` object.
165
"""
166
parents = []
167
message_lines = []
168
in_message = False
169
committer_was_set = False
170
revision_id = ids.convert_revision_id_git_to_bzr(raw[0][:-1])
171
rev = revision.Revision(revision_id)
172
rev.inventory_sha1 = ""
173
assert raw[-1] == '\x00', (
174
"Last item of raw was not a single NULL character.")
175
for line in raw[1:-1]:
176
if in_message:
177
assert line[:4] == ' ', (
178
"Unexpected line format in commit message: %r" % line)
179
message_lines.append(line[4:])
180
continue
181
if line == '\n':
182
in_message = True
183
continue
184
name, value = line[:-1].split(' ', 1)
185
if name == 'parent':
186
rev.parent_ids.append(
187
ids.convert_revision_id_git_to_bzr(value))
188
continue
189
if name == 'author':
190
author, timestamp, timezone = value.rsplit(' ', 2)
191
rev.properties['author'] = author
192
rev.properties['git-author-timestamp'] = timestamp
193
rev.properties['git-author-timezone'] = timezone
194
if not committer_was_set:
195
rev.committer = author
196
rev.timestamp = float(timestamp)
197
rev.timezone = klass._parse_tz(timezone)
198
continue
199
if name == 'committer':
200
committer_was_set = True
201
committer, timestamp, timezone = value.rsplit(' ', 2)
202
rev.committer = committer
203
rev.timestamp = float(timestamp)
204
rev.timezone = klass._parse_tz(timezone)
205
continue
206
if name == 'tree':
207
rev.properties['git-tree-id'] = value
208
continue
209
210
rev.message = ''.join(message_lines)
211
return rev
212
213
@classmethod
214
def _parse_tz(klass, tz):
215
"""Parse a timezone specification in the [+|-]HHMM format.
216
217
:return: the timezone offset in seconds.
218
"""
219
assert len(tz) == 5
220
sign = {'+': +1, '-': -1}[tz[0]]
221
hours = int(tz[1:3])
222
minutes = int(tz[3:])
223
return sign * 60 * (60 * hours + minutes)
261
224
262
225
def revision_trees(self, revids):
263
226
for revid in revids:
264
227
yield self.revision_tree(revid)
265
228
266
229
def revision_tree(self, revision_id):
267
revision_id = revision.ensure_null(revision_id)
268
if revision_id == revision.NULL_REVISION:
269
inv = inventory.Inventory(root_id=None)
270
inv.revision_id = revision_id
271
return revisiontree.RevisionTree(self, inv, revision_id)
272
230
return GitRevisionTree(self, revision_id)
273
231
232
def _get_blob(self, git_id):
233
try:
234
return self._blob_cache[git_id]
235
except KeyError:
236
blob = self._git.cat_file('blob', git_id)
237
# print "fetched blob:", git_id
238
self._blob_cache[git_id] = blob
239
return blob
240
274
241
def get_inventory(self, revision_id):
275
assert revision_id != None
276
return self.revision_tree(revision_id).inventory
277
278
def set_make_working_trees(self, trees):
279
pass
280
281
def fetch_objects(self, determine_wants, graph_walker, resolve_ext_ref,
282
progress=None):
283
return self._git.fetch_objects(determine_wants, graph_walker, progress)
284
242
if revision_id is None:
243
revision_id = revision.NULL_REVISION
244
if revision_id == revision.NULL_REVISION:
245
return inventory.Inventory(
246
revision_id=revision_id, root_id=None)
247
248
# First pass at building the inventory. We need this one to get the
249
# git ids, so we do not have to cache the entire tree text. Ideally,
250
# this should be all we need to do.
251
git_commit = ids.convert_revision_id_bzr_to_git(revision_id)
252
git_inventory = self._git.get_inventory(git_commit)
253
# print "fetched inventory:", git_commit
254
inv = self._parse_inventory(revision_id, git_inventory)
255
256
# Second pass at building the inventory. There we retrieve additional
257
# data that bzrlib requires: text sizes, sha1s, symlink targets and
258
# revisions that introduced inventory entries
259
inv.git_file_data = {}
260
for file_id in sorted(inv.git_ids.iterkeys()):
261
git_id = inv.git_ids[file_id]
262
entry = inv[file_id]
263
self._set_entry_text_info(inv, entry, git_id)
264
for file_id in sorted(inv.git_ids.iterkeys()):
265
git_id = inv.git_ids[file_id]
266
entry = inv[file_id]
267
path = inv.id2path(file_id)
268
self._set_entry_revision(entry, revision_id, path, git_id)
269
return inv
270
271
@classmethod
272
def _parse_inventory(klass, revid, git_inv):
273
# For now, git inventory do not have root ids. It is not clear that we
274
# can reliably support root ids. -- David Allouche 2007-12-28
275
inv = inventory.Inventory(revision_id=revid)
276
inv.git_ids = {}
277
for perms, git_kind, git_id, path in git_inv:
278
text_sha1 = None
279
executable = False
280
if git_kind == 'blob':
281
if perms[1] == '0':
282
kind = 'file'
283
executable = bool(int(perms[-3:], 8) & 0111)
284
elif perms[1] == '2':
285
kind = 'symlink'
286
else:
287
raise AssertionError(
288
"Unknown blob kind, perms=%r." % (perms,))
289
elif git_kind == 'tree':
290
kind = 'directory'
291
else:
292
raise AssertionError(
293
"Unknown git entry kind: %r" % (git_kind,))
294
# XXX: Maybe the file id should be prefixed by file kind, so when
295
# the kind of path changes, the id changes too.
296
# -- David Allouche 2007-12-28.
297
file_id = escape_file_id(path.encode('utf-8'))
298
entry = inv.add_path(path, kind, file_id=file_id)
299
entry.executable = executable
300
inv.git_ids[file_id] = git_id
301
inv.root.revision = revid
302
return inv
303
304
def _set_entry_text_info(self, inv, entry, git_id):
305
if entry.kind == 'directory':
306
return
307
lines = self._get_blob(git_id)
308
entry.text_size = sum(len(line) for line in lines)
309
entry.text_sha1 = osutils.sha_strings(lines)
310
if entry.kind == 'symlink':
311
entry.symlink_target = ''.join(lines)
312
inv.git_file_data[entry.file_id] = lines
313
314
def _get_file_revision(self, revision_id, path):
315
lines = self._git.rev_list(
316
[ids.convert_revision_id_bzr_to_git(revision_id)],
317
max_count=1, topo_order=True, paths=[path])
318
[line] = lines
319
result = ids.convert_revision_id_git_to_bzr(line[:-1])
320
# print "fetched file revision", line[:-1], path
321
return result
322
323
def _set_entry_revision(self, entry, revid, path, git_id):
324
# If a revision is in the cache, we assume it contains entries for the
325
# whole inventory. So if all parent revisions are in the cache, but no
326
# parent entry is present, then the entry revision is the current
327
# revision. That amortizes the number of _get_file_revision calls for
328
# large pulls to a "small number".
329
cached = self._entry_revision_cache.get(revid, {}).get(
330
(path, git_id, entry.executable))
331
if cached is not None:
332
entry.revision = cached
333
return
334
revision = self.get_revision(revid)
335
all_parents_in_cache = True
336
for parent_id in revision.parent_ids:
337
if parent_id not in self._entry_revision_cache:
338
all_parents_in_cache = False
339
continue
340
entry_rev = self._entry_revision_cache[parent_id].get(
341
(path, git_id, entry.executable))
342
if entry_rev is not None:
343
break
344
else:
345
if all_parents_in_cache:
346
entry_rev = revid
347
else:
348
entry_rev = self._get_file_revision(revid, path)
349
self._entry_revision_cache.setdefault(
350
revid, {})[(path, git_id, entry.executable)] = entry_rev
351
entry.revision = entry_rev
352
353
354
def escape_file_id(file_id):
355
return file_id.replace('_', '__').replace(' ', '_s')
285
356
286
357
class GitRevisionTree(revisiontree.RevisionTree):
287
358
288
359
def __init__(self, repository, revision_id):
360
if revision_id is None:
361
revision_id = revision.NULL_REVISION
362
self._inventory = repository.get_inventory(revision_id)
289
363
self._repository = repository
290
364
self._revision_id = revision_id
291
assert isinstance(revision_id, str)
292
git_id, self.mapping = repository.lookup_git_revid(revision_id)
293
try:
294
commit = repository._git.commit(git_id)
295
except KeyError, r:
296
raise errors.NoSuchRevision(repository, revision_id)
297
self.tree = commit.tree
298
self._inventory = inventory.Inventory(revision_id=revision_id)
299
self._inventory.root.revision = revision_id
300
self._build_inventory(self.tree, self._inventory.root, "")
301
302
def get_revision_id(self):
303
return self._revision_id
304
305
def get_file_text(self, file_id):
365
366
def get_file_lines(self, file_id):
306
367
entry = self._inventory[file_id]
307
if entry.kind == 'directory': return ""
308
return self._repository._git.get_blob(entry.text_id).data
309
310
def _build_inventory(self, tree_id, ie, path):
311
assert isinstance(path, str)
312
tree = self._repository._git.tree(tree_id)
313
for mode, name, hexsha in tree.entries():
314
basename = name.decode("utf-8")
315
if path == "":
316
child_path = name
317
else:
318
child_path = urlutils.join(path, name)
319
file_id = self.mapping.generate_file_id(child_path)
320
entry_kind = (mode & 0700000) / 0100000
321
if entry_kind == 0:
322
child_ie = inventory.InventoryDirectory(file_id, basename, ie.file_id)
323
elif entry_kind == 1:
324
file_kind = (mode & 070000) / 010000
325
b = self._repository._git.get_blob(hexsha)
326
if file_kind == 0:
327
child_ie = inventory.InventoryFile(file_id, basename, ie.file_id)
328
child_ie.text_sha1 = osutils.sha_string(b.data)
329
elif file_kind == 2:
330
child_ie = inventory.InventoryLink(file_id, basename, ie.file_id)
331
child_ie.symlink_target = b.data
332
child_ie.text_sha1 = osutils.sha_string("")
333
else:
334
raise AssertionError(
335
"Unknown file kind, perms=%o." % (mode,))
336
child_ie.text_id = b.id
337
child_ie.text_size = len(b.data)
338
else:
339
raise AssertionError(
340
"Unknown blob kind, perms=%r." % (mode,))
341
fs_mode = mode & 0777
342
child_ie.executable = bool(fs_mode & 0111)
343
# TODO: This should be set to the revision id in which
344
# child_ie was last changed instead.
345
child_ie.revision = self._revision_id
346
self._inventory.add(child_ie)
347
if entry_kind == 0:
348
self._build_inventory(hexsha, child_ie, child_path)
349
350
351
class GitRepositoryFormat(repository.RepositoryFormat):
352
353
supports_tree_reference = False
354
rich_root_data = True
355
356
def get_format_description(self):
357
return "Git Repository"
358
359
def initialize(self, url, shared=False, _internal=False):
360
raise bzr_errors.UninitializableFormat(self)
361
362
def check_conversion_target(self, target_repo_format):
363
return target_repo_format.rich_root_data
368
if entry.kind == 'directory': return []
369
return self._inventory.git_file_data[file_id]
370
371
obj_id = self._inventory.git_ids[file_id]
372
assert obj_id is not None, (
373
"git_id must not be None: %r" % (self._inventory[file_id],))
374
return self._repository._git.cat_file('blob', obj_id)
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0