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repository.py
1
1
# Copyright (C) 2007 Canonical Ltd
 
2
# Copyright (C) 2008-2009 Jelmer Vernooij <jelmer@samba.org>
2
3
#
3
4
# This program is free software; you can redistribute it and/or modify
4
5
# it under the terms of the GNU General Public License as published by
21
22
 
22
23
import bzrlib
23
24
from bzrlib import (
24
 
    deprecated_graph,
25
25
    errors,
 
26
    graph,
26
27
    inventory,
27
28
    osutils,
28
29
    repository,
29
30
    revision,
30
31
    revisiontree,
 
32
    ui,
31
33
    urlutils,
32
 
    versionedfile,
33
34
    )
34
35
from bzrlib.foreign import (
35
 
        ForeignRevision,
 
36
        ForeignRepository,
36
37
        )
 
38
from bzrlib.trace import mutter
37
39
from bzrlib.transport import get_transport
38
40
 
39
41
from bzrlib.plugins.git.foreign import (
40
 
    ForeignRepository,
41
42
    versionedfiles,
42
43
    )
43
 
from bzrlib.plugins.git.mapping import default_mapping
 
44
from bzrlib.plugins.git.mapping import default_mapping, mapping_registry, inventory_to_tree_and_blobs, revision_to_commit
 
45
from bzrlib.plugins.git.versionedfiles import GitTexts
44
46
 
45
 
from bzrlib.plugins.git import git
 
47
import dulwich as git
46
48
 
47
49
 
48
50
class GitTags(object):
60
62
    _serializer = None
61
63
 
62
64
    def __init__(self, gitdir, lockfiles):
 
65
        ForeignRepository.__init__(self, GitFormat(), gitdir, lockfiles)
 
66
        from bzrlib.plugins.git import fetch
 
67
        repository.InterRepository.register_optimiser(fetch.InterGitRepository)
 
68
        repository.InterRepository.register_optimiser(fetch.InterGitNonGitRepository)
 
69
 
 
70
    def is_shared(self):
 
71
        return True
 
72
 
 
73
    def supports_rich_root(self):
 
74
        return True
 
75
 
 
76
    def _warn_if_deprecated(self):
 
77
        # This class isn't deprecated
 
78
        pass
 
79
 
 
80
    def get_mapping(self):
 
81
        return default_mapping
 
82
 
 
83
    def make_working_trees(self):
 
84
        return True
 
85
 
 
86
 
 
87
class LocalGitRepository(GitRepository):
 
88
 
 
89
    def __init__(self, gitdir, lockfiles):
 
90
        # FIXME: This also caches negatives. Need to be more careful 
 
91
        # about this once we start writing to git
 
92
        self._parents_provider = graph.CachingParentsProvider(self)
 
93
        GitRepository.__init__(self, gitdir, lockfiles)
63
94
        self.base = gitdir.root_transport.base
64
 
        self.bzrdir = gitdir
65
 
        self.control_files = lockfiles
66
95
        self._git = gitdir._git
67
96
        self.texts = None
68
97
        self.signatures = versionedfiles.VirtualSignatureTexts(self)
69
98
        self.revisions = versionedfiles.VirtualRevisionTexts(self)
70
 
        self._format = GitFormat()
71
 
        self._fallback_repositories = []
 
99
        self.inventories = versionedfiles.VirtualInventoryTexts(self)
 
100
        self.texts = GitTexts(self)
72
101
        self.tags = GitTags(self._git.get_tags())
73
102
 
74
 
    def _all_revision_ids(self):
75
 
        if self._git.heads == []:
76
 
            return set()
77
 
        ret = set()
78
 
        skip = 0
79
 
        max_count = 1000
80
 
        cms = None
81
 
        while cms != []:
82
 
            cms = self._git.commits("--all", max_count=max_count, skip=skip)
83
 
            skip += max_count
84
 
            ret.update([self.get_mapping().revision_id_foreign_to_bzr(cm.id) for cm in cms])
 
103
    def all_revision_ids(self):
 
104
        ret = set([revision.NULL_REVISION])
 
105
        if self._git.heads() == []:
 
106
            return ret
 
107
        bzr_heads = [self.get_mapping().revision_id_foreign_to_bzr(h) for h in self._git.heads()]
 
108
        ret = set(bzr_heads)
 
109
        graph = self.get_graph()
 
110
        for rev, parents in graph.iter_ancestry(bzr_heads):
 
111
            ret.add(rev)
85
112
        return ret
86
113
 
87
 
    def is_shared(self):
88
 
        return True
89
 
 
90
 
    def supports_rich_root(self):
91
 
        return False
92
 
 
93
114
    #def get_revision_delta(self, revision_id):
94
115
    #    parent_revid = self.get_revision(revision_id).parent_ids[0]
95
116
    #    diff = self._git.diff(ids.convert_revision_id_bzr_to_git(parent_revid),
96
117
    #                   ids.convert_revision_id_bzr_to_git(revision_id))
97
118
 
98
 
    def get_ancestry(self, revision_id):
99
 
        revision_id = revision.ensure_null(revision_id)
100
 
        ret = []
101
 
        if revision_id != revision.NULL_REVISION:
102
 
            skip = 0
103
 
            max_count = 1000
104
 
            cms = None
105
 
            while cms != []:
106
 
                cms = self._git.commits(self.lookup_git_revid(revision_id, self.get_mapping()), max_count=max_count, skip=skip)
107
 
                skip += max_count
108
 
                ret += [self.get_mapping().revision_id_foreign_to_bzr(cm.id) for cm in cms]
109
 
        return [None] + ret
 
119
    def _make_parents_provider(self):
 
120
        """See Repository._make_parents_provider()."""
 
121
        return self._parents_provider
 
122
 
 
123
    def get_parent_map(self, revids):
 
124
        parent_map = {}
 
125
        mutter("get_parent_map(%r)", revids)
 
126
        for revision_id in revids:
 
127
            assert isinstance(revision_id, str)
 
128
            if revision_id == revision.NULL_REVISION:
 
129
                parent_map[revision_id] = ()
 
130
                continue
 
131
            hexsha, mapping = self.lookup_git_revid(revision_id)
 
132
            commit  = self._git.commit(hexsha)
 
133
            if commit is None:
 
134
                continue
 
135
            else:
 
136
                parent_map[revision_id] = [mapping.revision_id_foreign_to_bzr(p) for p in commit.parents]
 
137
        return parent_map
 
138
 
 
139
    def get_ancestry(self, revision_id, topo_sorted=True):
 
140
        """See Repository.get_ancestry().
 
141
        """
 
142
        if revision_id is None:
 
143
            return [None, revision.NULL_REVISION] + self._all_revision_ids()
 
144
        assert isinstance(revision_id, str)
 
145
        ancestry = []
 
146
        graph = self.get_graph()
 
147
        for rev, parents in graph.iter_ancestry([revision_id]):
 
148
            ancestry.append(rev)
 
149
        ancestry.reverse()
 
150
        return [None] + ancestry
 
151
 
 
152
    def import_revision_gist(self, source, revid, parent_lookup):
 
153
        """Impor the gist of another revision into this Git repository.
 
154
 
 
155
        """
 
156
        objects = []
 
157
        rev = source.get_revision(revid)
 
158
        for sha, object, path in inventory_to_tree_and_blobs(source, None, revid):
 
159
            if path == "":
 
160
                tree_sha = sha
 
161
            objects.append((object, path))
 
162
        commit = revision_to_commit(rev, tree_sha, parent_lookup)
 
163
        objects.append((commit, None))
 
164
        self._git.object_store.add_objects(objects)
 
165
        return commit.sha().hexdigest()
 
166
 
 
167
    def dfetch(self, source, stop_revision):
 
168
        if stop_revision is None:
 
169
            raise NotImplementedError
 
170
        revidmap = {}
 
171
        gitidmap = {}
 
172
        todo = []
 
173
        source.lock_write()
 
174
        try:
 
175
            graph = source.get_graph()
 
176
            ancestry = [x for x in source.get_ancestry(stop_revision) if x is not None]
 
177
            for revid in graph.iter_topo_order(ancestry):
 
178
                if not self.has_revision(revid):
 
179
                    todo.append(revid)
 
180
            pb = ui.ui_factory.nested_progress_bar()
 
181
            try:
 
182
                for i, revid in enumerate(todo):
 
183
                    pb.update("pushing revisions", i, len(todo))
 
184
                    git_commit = self.import_revision_gist(source, revid, gitidmap.__getitem__)
 
185
                    gitidmap[revid] = git_commit
 
186
                    git_revid = self.get_mapping().revision_id_foreign_to_bzr(git_commit)
 
187
                    revidmap[revid] = git_revid
 
188
            finally:
 
189
                pb.finished()
 
190
            source.fetch(self, revision_id=revidmap[stop_revision])
 
191
        finally:
 
192
            source.unlock()
 
193
        return revidmap
110
194
 
111
195
    def get_signature_text(self, revision_id):
112
196
        raise errors.NoSuchRevision(self, revision_id)
123
207
    def has_signature_for_revision_id(self, revision_id):
124
208
        return False
125
209
 
126
 
    def get_mapping(self):
127
 
        return default_mapping
128
 
 
129
 
    def get_parent_map(self, revision_ids):
130
 
        ret = {}
131
 
        for revid in revision_ids:
132
 
            if revid == revision.NULL_REVISION:
133
 
                ret[revid] = ()
134
 
            else:
135
 
                git_commit_id = self.lookup_git_revid(revid, self.get_mapping())
136
 
                commit = self._git.commit(git_commit_id)
137
 
                ret[revid] = tuple([self.get_mapping().revision_id_foreign_to_bzr(p.id) for p in commit.parents])
138
 
        return ret
139
 
 
140
 
    def lookup_git_revid(self, bzr_revid, mapping):
 
210
    def lookup_git_revid(self, bzr_revid):
141
211
        try:
142
 
            return mapping.revision_id_bzr_to_foreign(bzr_revid)
 
212
            return mapping_registry.revision_id_bzr_to_foreign(bzr_revid)
143
213
        except errors.InvalidRevisionId:
144
 
            raise errors.NoSuchRevision(bzr_revid, self)
 
214
            raise errors.NoSuchRevision(self, bzr_revid)
145
215
 
146
216
    def get_revision(self, revision_id):
147
 
        git_commit_id = self.lookup_git_revid(revision_id, self.get_mapping())
148
 
        commit = self._git.commit(git_commit_id)
 
217
        git_commit_id, mapping = self.lookup_git_revid(revision_id)
 
218
        try:
 
219
            commit = self._git.commit(git_commit_id)
 
220
        except KeyError:
 
221
            raise errors.NoSuchRevision(self, revision_id)
149
222
        # print "fetched revision:", git_commit_id
150
 
        revision = self._parse_rev(commit, self.get_mapping())
 
223
        revision = mapping.import_commit(commit)
 
224
        assert revision is not None
151
225
        return revision
152
226
 
153
227
    def has_revision(self, revision_id):
154
228
        try:
155
229
            self.get_revision(revision_id)
156
 
        except NoSuchRevision:
 
230
        except errors.NoSuchRevision:
157
231
            return False
158
232
        else:
159
233
            return True
160
234
 
161
 
    def get_revisions(self, revisions):
162
 
        return [self.get_revision(r) for r in revisions]
163
 
 
164
 
    @classmethod
165
 
    def _parse_rev(klass, commit, mapping):
166
 
        """Convert a git commit to a bzr revision.
167
 
 
168
 
        :return: a `bzrlib.revision.Revision` object.
169
 
        """
170
 
        if commit is None:
171
 
            raise AssertionError("Commit object can't be None")
172
 
        rev = ForeignRevision(commit.id, mapping, mapping.revision_id_foreign_to_bzr(commit.id))
173
 
        rev.parent_ids = tuple([mapping.revision_id_foreign_to_bzr(p.id) for p in commit.parents])
174
 
        rev.message = commit.message.decode("utf-8", "replace")
175
 
        rev.committer = str(commit.committer).decode("utf-8", "replace")
176
 
        rev.properties['author'] = str(commit.author).decode("utf-8", "replace")
177
 
        rev.timestamp = time.mktime(commit.committed_date)
178
 
        rev.timezone = 0
179
 
        return rev
 
235
    def get_revisions(self, revids):
 
236
        return [self.get_revision(r) for r in revids]
180
237
 
181
238
    def revision_trees(self, revids):
182
239
        for revid in revids:
199
256
    def set_make_working_trees(self, trees):
200
257
        pass
201
258
 
202
 
 
203
 
def escape_file_id(file_id):
204
 
    return file_id.replace('_', '__').replace(' ', '_s')
205
 
 
206
 
 
207
 
def unescape_file_id(file_id):
208
 
    return file_id.replace("_s", " ").replace("__", "_")
 
259
    def fetch_objects(self, determine_wants, graph_walker, resolve_ext_ref, progress=None):
 
260
        return self._git.fetch_objects(determine_wants, graph_walker, progress)
209
261
 
210
262
 
211
263
class GitRevisionTree(revisiontree.RevisionTree):
213
265
    def __init__(self, repository, revision_id):
214
266
        self._repository = repository
215
267
        self.revision_id = revision_id
216
 
        git_id = repository.lookup_git_revid(revision_id, repository.get_mapping())
217
 
        self.tree = repository._git.commit(git_id).tree
 
268
        assert isinstance(revision_id, str)
 
269
        git_id, self.mapping = repository.lookup_git_revid(revision_id)
 
270
        try:
 
271
            commit = repository._git.commit(git_id)
 
272
        except KeyError, r:
 
273
            raise errors.NoSuchRevision(repository, revision_id)
 
274
        self.tree = commit.tree
218
275
        self._inventory = inventory.Inventory(revision_id=revision_id)
219
276
        self._inventory.root.revision = revision_id
220
277
        self._build_inventory(self.tree, self._inventory.root, "")
225
282
    def get_file_text(self, file_id):
226
283
        entry = self._inventory[file_id]
227
284
        if entry.kind == 'directory': return ""
228
 
        return self._repository._git.blob(entry.text_id).data
 
285
        return self._repository._git.get_blob(entry.text_id).data
229
286
 
230
 
    def _build_inventory(self, tree, ie, path):
 
287
    def _build_inventory(self, tree_id, ie, path):
231
288
        assert isinstance(path, str)
232
 
        for name, mode, hexsha in tree.entries():
 
289
        tree = self._repository._git.tree(tree_id)
 
290
        for mode, name, hexsha in tree.entries():
233
291
            basename = name.decode("utf-8")
234
292
            if path == "":
235
293
                child_path = name
236
294
            else:
237
295
                child_path = urlutils.join(path, name)
238
 
            file_id = escape_file_id(child_path.encode('utf-8'))
239
 
            if mode[0] == '0':
 
296
            file_id = self.mapping.generate_file_id(child_path)
 
297
            entry_kind = (mode & 0700000) / 0100000
 
298
            if entry_kind == 0:
240
299
                child_ie = inventory.InventoryDirectory(file_id, basename, ie.file_id)
241
 
            elif mode[0] == '1':
242
 
                if mode[1] == '0':
 
300
            elif entry_kind == 1:
 
301
                file_kind = (mode & 070000) / 010000
 
302
                b = self._repository._git.get_blob(hexsha)
 
303
                if file_kind == 0:
243
304
                    child_ie = inventory.InventoryFile(file_id, basename, ie.file_id)
244
305
                    child_ie.text_sha1 = osutils.sha_string(b.data)
245
 
                elif mode[1] == '2':
 
306
                elif file_kind == 2:
246
307
                    child_ie = inventory.InventoryLink(file_id, basename, ie.file_id)
247
308
                    child_ie.text_sha1 = osutils.sha_string("")
248
309
                else:
249
310
                    raise AssertionError(
250
 
                        "Unknown file kind, perms=%r." % (mode,))
 
311
                        "Unknown file kind, perms=%o." % (mode,))
251
312
                child_ie.text_id = b.id
252
 
                child_ie.text_size = b.size
 
313
                child_ie.text_size = len(b.data)
253
314
            else:
254
315
                raise AssertionError(
255
316
                    "Unknown blob kind, perms=%r." % (mode,))
256
 
            child_ie.executable = bool(int(mode[3:], 8) & 0111)
 
317
            fs_mode = mode & 0777
 
318
            child_ie.executable = bool(fs_mode & 0111)
257
319
            child_ie.revision = self.revision_id
258
320
            self._inventory.add(child_ie)
259
 
            if mode[0] == '0':
260
 
                self._build_inventory(b, child_ie, child_path)
 
321
            if entry_kind == 0:
 
322
                self._build_inventory(hexsha, child_ie, child_path)
261
323
 
262
324
 
263
325
class GitFormat(object):
264
326
 
265
327
    supports_tree_reference = False
 
328
    rich_root_data = True
266
329
 
267
330
    def get_format_description(self):
268
331
        return "Git Repository"
 
332
 
 
333
    def initialize(self, url, shared=False, _internal=False):
 
334
        raise bzr_errors.UninitializableFormat(self)
 
335
 
 
336
    def check_conversion_target(self, target_repo_format):
 
337
        return target_repo_format.rich_root_data