/brz/remove-bazaar

To get this branch, use:
bzr branch http://gegoxaren.bato24.eu/bzr/brz/remove-bazaar

« back to all changes in this revision

Viewing changes to branch.py

Use CommonInventory to lazily evaluate trees.

Show diffs side-by-side

added added

removed removed

Lines of Context:
branch.py
1
1
# Copyright (C) 2007 Canonical Ltd
 
2
# Copyright (C) 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
16
17
 
17
18
"""An adapter between a Git Branch and a Bazaar Branch"""
18
19
 
 
20
from dulwich.objects import (
 
21
    Commit,
 
22
    Tag,
 
23
    )
 
24
 
19
25
from bzrlib import (
20
26
    branch,
21
27
    config,
 
28
    foreign,
 
29
    repository,
22
30
    revision,
23
31
    tag,
24
 
    )
25
 
from bzrlib.decorators import needs_read_lock
26
 
 
27
 
from bzrlib.plugins.git.foreign import ForeignBranch
28
 
from bzrlib.plugins.git.mapping import default_mapping
29
 
 
30
 
class GitTagDict(tag.BasicTags):
 
32
    transport,
 
33
    )
 
34
from bzrlib.decorators import (
 
35
    needs_read_lock,
 
36
    )
 
37
from bzrlib.trace import (
 
38
    mutter,
 
39
    )
 
40
 
 
41
from bzrlib.plugins.git.errors import (
 
42
    NoSuchRef,
 
43
    )
 
44
 
 
45
 
 
46
class GitPullResult(branch.PullResult):
 
47
 
 
48
    def _lookup_revno(self, revid):
 
49
        assert isinstance(revid, str), "was %r" % revid
 
50
        # Try in source branch first, it'll be faster
 
51
        return self.target_branch.revision_id_to_revno(revid)
 
52
 
 
53
    @property
 
54
    def old_revno(self):
 
55
        return self._lookup_revno(self.old_revid)
 
56
 
 
57
    @property
 
58
    def new_revno(self):
 
59
        return self._lookup_revno(self.new_revid)
 
60
 
 
61
 
 
62
class LocalGitTagDict(tag.BasicTags):
 
63
    """Dictionary with tags in a local repository."""
31
64
 
32
65
    def __init__(self, branch):
33
66
        self.branch = branch
35
68
 
36
69
    def get_tag_dict(self):
37
70
        ret = {}
38
 
        for tag in self.repository._git.tags:
39
 
            ret[tag.name] = self.branch.mapping.revision_id_foreign_to_bzr(tag.ref)
 
71
        for k,v in self.repository._git.tags.iteritems():
 
72
            obj = self.repository._git.get_object(v)
 
73
            while isinstance(obj, Tag):
 
74
                v = obj.object[1]
 
75
                obj = self.repository._git.get_object(v)
 
76
            if not isinstance(obj, Commit):
 
77
                mutter("Tag %s points at object %r that is not a commit, "
 
78
                       "ignoring", k, obj)
 
79
                continue
 
80
            ret[k] = self.branch.mapping.revision_id_foreign_to_bzr(v)
40
81
        return ret
41
82
 
42
83
    def set_tag(self, name, revid):
43
 
        raise NotImplementedError(self.set_tag)
 
84
        self.repository._git.tags[name] = revid
44
85
 
45
86
 
46
87
class GitBranchConfig(config.BranchConfig):
51
92
        # do not provide a BranchDataConfig
52
93
        self.option_sources = self.option_sources[0], self.option_sources[2]
53
94
 
54
 
    def set_user_option(self, name, value, local=False):
 
95
    def set_user_option(self, name, value, store=config.STORE_BRANCH,
 
96
            warn_masked=False):
55
97
        """Force local to True"""
56
 
        config.BranchConfig.set_user_option(self, name, value, local=True)
 
98
        config.BranchConfig.set_user_option(self, name, value,
 
99
            store=config.STORE_LOCATION, warn_masked=warn_masked)
57
100
 
58
101
 
59
102
class GitBranchFormat(branch.BranchFormat):
64
107
    def supports_tags(self):
65
108
        return True
66
109
 
67
 
 
68
 
class GitBranch(ForeignBranch):
 
110
    def make_tags(self, branch):
 
111
        if getattr(branch.repository, "get_refs", None) is not None:
 
112
            from bzrlib.plugins.git.remote import RemoteGitTagDict
 
113
            return RemoteGitTagDict(branch)
 
114
        else:
 
115
            return LocalGitTagDict(branch)
 
116
 
 
117
 
 
118
class GitBranch(foreign.ForeignBranch):
69
119
    """An adapter to git repositories for bzr Branch objects."""
70
120
 
71
121
    def __init__(self, bzrdir, repository, name, head, lockfiles):
72
122
        self.repository = repository
73
 
        super(GitBranch, self).__init__(default_mapping)
 
123
        self._format = GitBranchFormat()
74
124
        self.control_files = lockfiles
75
125
        self.bzrdir = bzrdir
 
126
        super(GitBranch, self).__init__(repository.get_mapping())
76
127
        self.name = name
77
128
        self.head = head
78
129
        self.base = bzrdir.transport.base
79
 
        self._format = GitBranchFormat()
 
130
 
 
131
    def _get_nick(self, local=False, possible_master_transports=None):
 
132
        """Find the nick name for this branch.
 
133
 
 
134
        :return: Branch nick
 
135
        """
 
136
        return self.name
 
137
 
 
138
    def _set_nick(self, nick):
 
139
        raise NotImplementedError
 
140
 
 
141
    nick = property(_get_nick, _set_nick)
 
142
 
 
143
    def dpull(self, source, stop_revision=None):
 
144
        if stop_revision is None:
 
145
            stop_revision = source.last_revision()
 
146
        # FIXME: Check for diverged branches
 
147
        revidmap = self.repository.dfetch(source.repository, stop_revision)
 
148
        self.generate_revision_history(revidmap[stop_revision])
 
149
        return revidmap
 
150
 
 
151
    def generate_revision_history(self, revid, old_revid=None):
 
152
        # FIXME: Check that old_revid is in the ancestry of revid
 
153
        newhead, self.mapping = self.mapping.revision_id_bzr_to_foreign(revid)
 
154
        self._set_head(newhead)
 
155
 
 
156
    def _set_head(self, head):
 
157
        self.repository._git.set_ref(self.name, self.head)
 
158
        self.head = head
80
159
 
81
160
    def lock_write(self):
82
161
        self.control_files.lock_write()
87
166
 
88
167
    def get_parent(self):
89
168
        """See Branch.get_parent()."""
 
169
        # FIXME: Set "origin" url from .git/config ?
90
170
        return None
91
171
 
 
172
    def set_parent(self, url):
 
173
        # FIXME: Set "origin" url in .git/config ?
 
174
        pass
 
175
 
92
176
    def lock_read(self):
93
177
        self.control_files.lock_read()
94
178
 
100
184
 
101
185
 
102
186
class LocalGitBranch(GitBranch):
 
187
    """A local Git branch."""
103
188
 
104
189
    @needs_read_lock
105
190
    def last_revision(self):
108
193
            return revision.NULL_REVISION
109
194
        return self.mapping.revision_id_foreign_to_bzr(self.head)
110
195
 
111
 
    def _make_tags(self):
112
 
        return GitTagDict(self)
 
196
    def _get_checkout_format(self):
 
197
        """Return the most suitable metadir for a checkout of this branch.
 
198
        Weaves are used if this branch's repository uses weaves.
 
199
        """
 
200
        format = self.repository.bzrdir.checkout_metadir()
 
201
        format.set_branch_format(self._format)
 
202
        return format
 
203
 
 
204
    def create_checkout(self, to_location, revision_id=None, lightweight=False,
 
205
        accelerator_tree=None, hardlink=False):
 
206
        if lightweight:
 
207
            t = transport.get_transport(to_location)
 
208
            t.ensure_base()
 
209
            format = self._get_checkout_format()
 
210
            checkout = format.initialize_on_transport(t)
 
211
            from_branch = branch.BranchReferenceFormat().initialize(checkout, 
 
212
                self)
 
213
            tree = checkout.create_workingtree(revision_id,
 
214
                from_branch=from_branch, hardlink=hardlink)
 
215
            return tree
 
216
        else:
 
217
            return self._create_heavyweight_checkout(to_location, revision_id,
 
218
            hardlink)
 
219
 
 
220
    def _create_heavyweight_checkout(self, to_location, revision_id=None, 
 
221
                                     hardlink=False):
 
222
        """Create a new heavyweight checkout of this branch.
 
223
 
 
224
        :param to_location: URL of location to create the new checkout in.
 
225
        :param revision_id: Revision that should be the tip of the checkout.
 
226
        :param hardlink: Whether to hardlink
 
227
        :return: WorkingTree object of checkout.
 
228
        """
 
229
        checkout_branch = BzrDir.create_branch_convenience(
 
230
            to_location, force_new_tree=False, format=get_rich_root_format())
 
231
        checkout = checkout_branch.bzrdir
 
232
        checkout_branch.bind(self)
 
233
        # pull up to the specified revision_id to set the initial 
 
234
        # branch tip correctly, and seed it with history.
 
235
        checkout_branch.pull(self, stop_revision=revision_id)
 
236
        return checkout.create_workingtree(revision_id, hardlink=hardlink)
113
237
 
114
238
    def _gen_revision_history(self):
115
239
        if self.head is None:
116
240
            return []
117
 
        ret = list(self.repository.iter_reverse_revision_history(self.last_revision()))
 
241
        ret = list(self.repository.iter_reverse_revision_history(
 
242
            self.last_revision()))
118
243
        ret.reverse()
119
244
        return ret
120
245
 
129
254
    def set_push_location(self, location):
130
255
        """See Branch.set_push_location."""
131
256
        self.get_config().set_user_option('push_location', location,
132
 
                                          local=True)
 
257
                                          store=config.STORE_LOCATION)
133
258
 
134
259
    def supports_tags(self):
135
260
        return True
136
261
 
137
 
    def sprout(self, to_bzrdir, revision_id=None):
138
 
        """See Branch.sprout()."""
139
 
        result = to_bzrdir.create_branch()
140
 
        self.copy_content_into(result, revision_id=revision_id)
141
 
        result.set_parent(self.bzrdir.root_transport.base)
 
262
 
 
263
class InterGitGenericBranch(branch.InterBranch):
 
264
    """InterBranch implementation that pulls from Git into bzr."""
 
265
 
 
266
    @classmethod
 
267
    def is_compatible(self, source, target):
 
268
        return (isinstance(source, GitBranch) and 
 
269
                not isinstance(target, GitBranch))
 
270
 
 
271
    def update_revisions(self, stop_revision=None, overwrite=False,
 
272
        graph=None):
 
273
        """See InterBranch.update_revisions()."""
 
274
        interrepo = repository.InterRepository.get(self.source.repository, 
 
275
            self.target.repository)
 
276
        self._last_revid = None
 
277
        def determine_wants(heads):
 
278
            if not self.source.name in heads:
 
279
                raise NoSuchRef(self.source.name, heads.keys())
 
280
            if stop_revision is not None:
 
281
                self._last_revid = stop_revision
 
282
                head, mapping = self.source.repository.lookup_git_revid(
 
283
                    stop_revision)
 
284
            else:
 
285
                head = heads[self.source.name]
 
286
                self._last_revid = \
 
287
                    self.source.mapping.revision_id_foreign_to_bzr(head)
 
288
            if self.target.repository.has_revision(self._last_revid):
 
289
                return []
 
290
            return [head]
 
291
        interrepo.fetch_objects(determine_wants, self.source.mapping)
 
292
        if overwrite:
 
293
            prev_last_revid = None
 
294
        else:
 
295
            prev_last_revid = self.target.last_revision()
 
296
        self.target.generate_revision_history(self._last_revid, prev_last_revid)
 
297
 
 
298
 
 
299
branch.InterBranch.register_optimiser(InterGitGenericBranch)
 
300
 
 
301
 
 
302
class InterGitRemoteLocalBranch(branch.InterBranch):
 
303
    """InterBranch implementation that pulls between Git branches."""
 
304
 
 
305
    @classmethod
 
306
    def is_compatible(self, source, target):
 
307
        from bzrlib.plugins.git.remote import RemoteGitBranch
 
308
        return (isinstance(source, RemoteGitBranch) and 
 
309
                isinstance(target, LocalGitBranch))
 
310
 
 
311
    def pull(self, stop_revision=None, overwrite=False, 
 
312
        possible_transports=None):
 
313
        result = GitPullResult()
 
314
        result.source_branch = self.source
 
315
        result.target_branch = self.target
 
316
        interrepo = repository.InterRepository.get(self.source.repository, 
 
317
            self.target.repository)
 
318
        result.old_revid = self.target.last_revision()
 
319
        if stop_revision is None:
 
320
            stop_revision = self.source.last_revision()
 
321
        interrepo.fetch(revision_id=stop_revision)
 
322
        self.target.generate_revision_history(stop_revision, result.old_revid)
 
323
        result.new_revid = self.target.last_revision()
142
324
        return result
143
325
 
 
326
 
 
327
branch.InterBranch.register_optimiser(InterGitRemoteLocalBranch)