/brz/remove-bazaar

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push.py
16
16
 
17
17
"""Push implementation that simply prints message saying push is not supported."""
18
18
 
 
19
from dulwich.objects import ZERO_SHA
 
20
from dulwich.walk import Walker
 
21
 
19
22
from bzrlib import (
20
23
    errors,
21
24
    ui,
31
34
    NoPushSupport,
32
35
    )
33
36
from bzrlib.plugins.git.object_store import (
34
 
    BazaarObjectStore,
 
37
    get_object_store,
35
38
    )
36
39
from bzrlib.plugins.git.repository import (
37
40
    GitRepository,
41
44
from bzrlib.plugins.git.remote import (
42
45
    RemoteGitRepository,
43
46
    )
 
47
from bzrlib.plugins.git.unpeel_map import (
 
48
    UnpeelMap,
 
49
    )
44
50
 
45
51
 
46
52
class MissingObjectsIterator(object):
57
63
        self._pending = []
58
64
        self.pb = pb
59
65
 
60
 
    def import_revisions(self, revids, roundtrip):
 
66
    def import_revisions(self, revids, lossy):
61
67
        """Import a set of revisions into this git repository.
62
68
 
63
69
        :param revids: Revision ids of revisions to import
64
 
        :param roundtrip: Whether to roundtrip bzr metadata
 
70
        :param lossy: Whether to not roundtrip bzr metadata
65
71
        """
66
72
        for i, revid in enumerate(revids):
67
73
            if self.pb:
68
74
                self.pb.update("pushing revisions", i, len(revids))
69
 
            git_commit = self.import_revision(revid, roundtrip)
 
75
            git_commit = self.import_revision(revid, lossy)
70
76
            yield (revid, git_commit)
71
77
 
72
 
    def import_revision(self, revid, roundtrip):
 
78
    def import_revision(self, revid, lossy):
73
79
        """Import a revision into this Git repository.
74
80
 
75
81
        :param revid: Revision id of the revision
78
84
        tree = self._object_store.tree_cache.revision_tree(revid)
79
85
        rev = self.source.get_revision(revid)
80
86
        commit = None
81
 
        for path, obj, ie in self._object_store._revision_to_objects(rev, tree,
82
 
            roundtrip):
 
87
        for path, obj, ie in self._object_store._revision_to_objects(rev, tree, lossy):
83
88
            if obj.type_name == "commit":
84
89
                commit = obj
85
90
            self._pending.append((obj, path))
 
91
        if commit is None:
 
92
            raise AssertionError("no commit object generated for revision %s" %
 
93
                revid)
86
94
        return commit.id
87
95
 
88
96
    def __len__(self):
100
108
    def __init__(self, source, target):
101
109
        super(InterToGitRepository, self).__init__(source, target)
102
110
        self.mapping = self.target.get_mapping()
103
 
        self.source_store = BazaarObjectStore(self.source, self.mapping)
 
111
        self.source_store = get_object_store(self.source, self.mapping)
104
112
 
105
113
    @staticmethod
106
114
    def _get_repo_format_to_test():
110
118
        """See InterRepository.copy_content."""
111
119
        self.fetch(revision_id, pb, find_ghosts=False)
112
120
 
113
 
    def dfetch_refs(self, update_refs):
114
 
        """Fetch non-roundtripped revisions into the target repository.
115
 
 
116
 
        :param update_refs: Generate refs to fetch. Receives dictionary
117
 
            with old names to old git shas. Should return a dictionary
118
 
            of new names to Bazaar revision ids.
119
 
        :return: revision id map, old refs dictionary and new refs dictionary
120
 
        """
121
 
        raise NotImplementedError(self.dfetch_refs)
122
 
 
123
 
    def fetch_refs(self, update_refs):
124
 
        """Fetch possibly roundtripped revisions into the target repository.
 
121
    def fetch_refs(self, update_refs, lossy):
 
122
        """Fetch possibly roundtripped revisions into the target repository
 
123
        and update refs.
125
124
 
126
125
        :param update_refs: Generate refs to fetch. Receives dictionary
127
126
            with old refs (git shas), returns dictionary of new names to
128
127
            git shas.
 
128
        :param lossy: Whether to roundtrip
129
129
        :return: old refs, new refs
130
130
        """
131
131
        raise NotImplementedError(self.fetch_refs)
132
132
 
 
133
    def search_missing_revision_ids(self,
 
134
            find_ghosts=True, revision_ids=None, if_present_ids=None,
 
135
            limit=None):
 
136
        git_shas = []
 
137
        todo = []
 
138
        if revision_ids:
 
139
            todo.extend(revision_ids)
 
140
        if if_present_ids:
 
141
            todo.extend(revision_ids)
 
142
        self.source_store.lock_read()
 
143
        try:
 
144
            for revid in revision_ids:
 
145
                if revid == NULL_REVISION:
 
146
                    continue
 
147
                git_sha = self.source_store._lookup_revision_sha1(revid)
 
148
                git_shas.append(git_sha)
 
149
            walker = Walker(self.source_store,
 
150
                include=git_shas, exclude=[sha for sha in self.target.bzrdir.get_refs_container().as_dict().values() if sha != ZERO_SHA])
 
151
            missing_revids = set()
 
152
            for entry in walker:
 
153
                for (kind, type_data) in self.source_store.lookup_git_sha(entry.commit.id):
 
154
                    if kind == "commit":
 
155
                        missing_revids.add(type_data[0])
 
156
        finally:
 
157
            self.source_store.unlock()
 
158
        return self.source.revision_ids_to_search_result(missing_revids)
 
159
 
133
160
 
134
161
class InterToLocalGitRepository(InterToGitRepository):
135
162
    """InterBranch implementation between a Bazaar and a Git repository."""
136
163
 
137
164
    def __init__(self, source, target):
138
165
        super(InterToLocalGitRepository, self).__init__(source, target)
139
 
        self.target_store = self.target._git.object_store
140
 
        self.target_refs = self.target._git.refs
 
166
        self.target_store = self.target.bzrdir._git.object_store
 
167
        self.target_refs = self.target.bzrdir._git.refs
 
168
 
 
169
    def _commit_needs_fetching(self, sha_id):
 
170
        try:
 
171
            return (sha_id not in self.target_store)
 
172
        except errors.NoSuchRevision:
 
173
            # Ghost, can't push
 
174
            return False
141
175
 
142
176
    def _revision_needs_fetching(self, sha_id, revid):
143
177
        if revid == NULL_REVISION:
147
181
                sha_id = self.source_store._lookup_revision_sha1(revid)
148
182
            except KeyError:
149
183
                return False
150
 
        try:
151
 
            return (sha_id not in self.target_store)
152
 
        except errors.NoSuchRevision:
153
 
            # Ghost, can't push
154
 
            return False
 
184
        return self._commit_needs_fetching(sha_id)
155
185
 
156
186
    def missing_revisions(self, stop_revisions):
157
187
        """Find the revisions that are missing from the target repository.
164
194
        """
165
195
        revid_sha_map = {}
166
196
        stop_revids = []
167
 
        stop_sha1s = []
168
197
        for (sha1, revid) in stop_revisions:
169
198
            if sha1 is not None and revid is not None:
170
199
                revid_sha_map[revid] = sha1
 
200
                stop_revids.append(revid)
171
201
            elif sha1 is not None:
172
 
                stop_sha1s.append(sha1)
 
202
                if self._commit_needs_fetching(sha1):
 
203
                    for (kind, (revid, tree_sha, verifiers)) in self.source_store.lookup_git_sha(sha1):
 
204
                        revid_sha_map[revid] = sha1
 
205
                        stop_revids.append(revid)
173
206
            else:
174
207
                assert revid is not None
175
208
                stop_revids.append(revid)
176
 
        missing = []
 
209
        missing = set()
177
210
        graph = self.source.get_graph()
178
211
        pb = ui.ui_factory.nested_progress_bar()
179
212
        try:
180
 
            for revid, _ in graph.iter_ancestry(stop_revids):
181
 
                assert type(revid) is str
 
213
            while stop_revids:
 
214
                new_stop_revids = []
 
215
                for revid in stop_revids:
 
216
                    sha1 = revid_sha_map.get(revid)
 
217
                    if (not revid in missing and
 
218
                        self._revision_needs_fetching(sha1, revid)):
 
219
                        missing.add(revid)
 
220
                        new_stop_revids.append(revid)
 
221
                stop_revids = set()
 
222
                parent_map = graph.get_parent_map(new_stop_revids)
 
223
                for parent_revids in parent_map.itervalues():
 
224
                    stop_revids.update(parent_revids)
182
225
                pb.update("determining revisions to fetch", len(missing))
183
 
                sha1 = revid_sha_map.get(revid)
184
 
                if self._revision_needs_fetching(sha1, revid):
185
 
                    missing.append(revid)
186
226
        finally:
187
227
            pb.finished()
188
 
        for sha1 in stop_sha1s:
189
 
            try:
190
 
                (kind, (revid, tree_sha, verifiers)) = self.source_store.lookup_git_sha(sha1)
191
 
            except KeyError:
192
 
                continue
193
 
            else:
194
 
                missing.append(revid)
195
 
                revid_sha_map[revid] = sha1
196
228
        return graph.iter_topo_order(missing)
197
229
 
198
230
    def _get_target_bzr_refs(self):
202
234
            with Git SHA, Bazaar revid as values.
203
235
        """
204
236
        bzr_refs = {}
205
 
        refs = self.target._git.get_refs()
206
 
        for k, v in refs.iteritems():
 
237
        refs = {}
 
238
        for k in self.target._git.refs.allkeys():
 
239
            v = self.target._git.refs.read_ref(k)
207
240
            try:
208
 
                (kind, type_data) = self.source_store.lookup_git_sha(v)
 
241
                for (kind, type_data) in self.source_store.lookup_git_sha(v):
 
242
                    if kind == "commit" and self.source.has_revision(type_data[0]):
 
243
                        revid = type_data[0]
 
244
                        break
 
245
                else:
 
246
                    revid = None
209
247
            except KeyError:
210
248
                revid = None
211
 
            else:
212
 
                if kind == "commit":
213
 
                    revid = type_data[0]
214
 
                else:
215
 
                    revid = None
216
249
            bzr_refs[k] = (v, revid)
217
250
        return bzr_refs
218
251
 
219
 
    def fetch_refs(self, update_refs):
220
 
        self.source.lock_read()
221
 
        try:
222
 
            old_refs = self._get_target_bzr_refs()
223
 
            new_refs = update_refs(old_refs)
224
 
            self.fetch(mapped_refs=new_refs.values())
225
 
        finally:
226
 
            self.source.unlock()
227
 
        return old_refs, new_refs
228
 
 
229
 
    def dfetch_refs(self, update_refs):
230
 
        self.source.lock_read()
231
 
        try:
232
 
            old_refs = self._get_target_bzr_refs()
233
 
            new_refs = update_refs(old_refs)
234
 
            revidmap, gitidmap = self.dfetch(new_refs.values())
 
252
    def fetch_refs(self, update_refs, lossy):
 
253
        if not lossy and not self.mapping.roundtripping:
 
254
            raise NoPushSupport()
 
255
        self.source_store.lock_read()
 
256
        try:
 
257
            old_refs = self._get_target_bzr_refs()
 
258
            new_refs = update_refs(old_refs)
 
259
            revidmap = self.fetch_objects(
 
260
                [(git_sha, bzr_revid) for (git_sha, bzr_revid) in new_refs.values() if git_sha is None or not git_sha.startswith('ref:')], lossy=lossy)
235
261
            for name, (gitid, revid) in new_refs.iteritems():
236
262
                if gitid is None:
237
263
                    try:
238
 
                        gitid = gitidmap[revid]
 
264
                        gitid = revidmap[revid][0]
239
265
                    except KeyError:
240
266
                        gitid = self.source_store._lookup_revision_sha1(revid)
241
 
                self.target._git.refs[name] = gitid
242
 
                new_refs[name] = (gitid, self.source_store.lookup_git_sha(gitid)[1][0])
 
267
                assert len(gitid) == 40 or gitid.startswith('ref: ')
 
268
                self.target_refs[name] = gitid
243
269
        finally:
244
 
            self.source.unlock()
 
270
            self.source_store.unlock()
245
271
        return revidmap, old_refs, new_refs
246
272
 
247
 
    def _get_missing_objects_iterator(self, pb):
248
 
        return MissingObjectsIterator(self.source_store, self.source, pb)
249
 
 
250
 
    def dfetch(self, stop_revisions):
251
 
        """Import the gist of the ancestry of a particular revision."""
252
 
        gitidmap = {}
253
 
        revidmap = {}
254
 
        self.source.lock_read()
 
273
    def fetch_objects(self, revs, lossy):
 
274
        if not lossy and not self.mapping.roundtripping:
 
275
            raise NoPushSupport()
 
276
        self.source_store.lock_read()
255
277
        try:
256
 
            todo = list(self.missing_revisions(stop_revisions))
 
278
            todo = list(self.missing_revisions(revs))
 
279
            revidmap = {}
257
280
            pb = ui.ui_factory.nested_progress_bar()
258
281
            try:
259
 
                object_generator = self._get_missing_objects_iterator(pb)
260
 
                for old_bzr_revid, git_commit in object_generator.import_revisions(
261
 
                    todo, roundtrip=False):
262
 
                    new_bzr_revid = self.mapping.revision_id_foreign_to_bzr(git_commit)
263
 
                    revidmap[old_bzr_revid] = new_bzr_revid
264
 
                    gitidmap[old_bzr_revid] = git_commit
 
282
                object_generator = MissingObjectsIterator(
 
283
                    self.source_store, self.source, pb)
 
284
                for (old_revid, git_sha) in object_generator.import_revisions(
 
285
                    todo, lossy=lossy):
 
286
                    if lossy:
 
287
                        new_revid = self.mapping.revision_id_foreign_to_bzr(git_sha)
 
288
                    else:
 
289
                        new_revid = old_revid
 
290
                        try:
 
291
                            self.mapping.revision_id_bzr_to_foreign(old_revid)
 
292
                        except errors.InvalidRevisionId:
 
293
                            refname = self.mapping.revid_as_refname(old_revid)
 
294
                            self.target_refs[refname] = git_sha
 
295
                    revidmap[old_revid] = (git_sha, new_revid)
265
296
                self.target_store.add_objects(object_generator)
 
297
                return revidmap
266
298
            finally:
267
299
                pb.finished()
268
300
        finally:
269
 
            self.source.unlock()
270
 
        return revidmap, gitidmap
 
301
            self.source_store.unlock()
271
302
 
272
303
    def fetch(self, revision_id=None, pb=None, find_ghosts=False,
273
304
            fetch_spec=None, mapped_refs=None):
 
305
        if not self.mapping.roundtripping:
 
306
            raise NoPushSupport()
274
307
        if mapped_refs is not None:
275
308
            stop_revisions = mapped_refs
276
309
        elif revision_id is not None:
277
310
            stop_revisions = [(None, revision_id)]
278
311
        elif fetch_spec is not None:
279
 
            stop_revisions = [(None, revid) for revid in fetch_spec.heads]
 
312
            recipe = fetch_spec.get_recipe()
 
313
            if recipe[0] in ("search", "proxy-search"):
 
314
                stop_revisions = [(None, revid) for revid in recipe[1]]
 
315
            else:
 
316
                raise AssertionError("Unsupported search result type %s" % recipe[0])
280
317
        else:
281
318
            stop_revisions = [(None, revid) for revid in self.source.all_revision_ids()]
282
 
        self.source.lock_read()
283
 
        try:
284
 
            todo = list(self.missing_revisions(stop_revisions))
285
 
            pb = ui.ui_factory.nested_progress_bar()
286
 
            try:
287
 
                object_generator = self._get_missing_objects_iterator(pb)
288
 
                for (revid, git_sha) in object_generator.import_revisions(
289
 
                    todo, roundtrip=True):
290
 
                    try:
291
 
                        self.mapping.revision_id_bzr_to_foreign(revid)
292
 
                    except errors.InvalidRevisionId:
293
 
                        self.target_refs[self.mapping.revid_as_refname(revid)] = git_sha
294
 
                self.target_store.add_objects(object_generator)
295
 
            finally:
296
 
                pb.finished()
297
 
        finally:
298
 
            self.source.unlock()
 
319
        self.fetch_objects(stop_revisions, lossy=False)
299
320
 
300
321
    @staticmethod
301
322
    def is_compatible(source, target):
306
327
 
307
328
class InterToRemoteGitRepository(InterToGitRepository):
308
329
 
309
 
    def dfetch_refs(self, update_refs):
 
330
    def fetch_refs(self, update_refs, lossy):
310
331
        """Import the gist of the ancestry of a particular revision."""
 
332
        if not lossy and not self.mapping.roundtripping:
 
333
            raise NoPushSupport()
 
334
        unpeel_map = UnpeelMap.from_repository(self.source)
311
335
        revidmap = {}
312
336
        def determine_wants(old_refs):
313
337
            ret = {}
314
 
            self.old_refs = old_refs
 
338
            self.old_refs = dict([(k, (v, None)) for (k, v) in old_refs.iteritems()])
315
339
            self.new_refs = update_refs(self.old_refs)
316
340
            for name, (gitid, revid) in self.new_refs.iteritems():
317
341
                if gitid is None:
318
 
                    ret[name] = self.source_store._lookup_revision_sha1(revid)
 
342
                    git_sha = self.source_store._lookup_revision_sha1(revid)
 
343
                    ret[name] = unpeel_map.re_unpeel_tag(git_sha, old_refs.get(name))
319
344
                else:
320
345
                    ret[name] = gitid
321
346
            return ret
322
 
        self.source.lock_read()
 
347
        self.source_store.lock_read()
323
348
        try:
324
349
            new_refs = self.target.send_pack(determine_wants,
325
350
                    self.source_store.generate_lossy_pack_contents)
326
351
        finally:
327
 
            self.source.unlock()
 
352
            self.source_store.unlock()
 
353
        # FIXME: revidmap?
328
354
        return revidmap, self.old_refs, self.new_refs
329
355
 
330
 
    def fetch_refs(self, update_refs):
331
 
        raise NoPushSupport()
332
 
 
333
356
    @staticmethod
334
357
    def is_compatible(source, target):
335
358
        """Be compatible with GitRepository."""