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Move config to a separate file, support BranchConfig.username().

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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,
22
29
    repository,
23
30
    revision,
24
31
    tag,
25
 
    )
26
 
from bzrlib.decorators import needs_read_lock
27
 
from bzrlib.trace import mutter
28
 
 
29
 
from bzrlib.plugins.git.foreign import ForeignBranch
30
 
from bzrlib.plugins.git.errors import LightWeightCheckoutsNotSupported
31
 
 
32
 
from dulwich.objects import (
33
 
        Commit,
34
 
        Tag,
35
 
        )
36
 
 
37
 
class GitTagDict(tag.BasicTags):
 
32
    transport,
 
33
    )
 
34
from bzrlib.decorators import (
 
35
    needs_read_lock,
 
36
    )
 
37
from bzrlib.trace import (
 
38
    is_quiet,
 
39
    mutter,
 
40
    )
 
41
 
 
42
from bzrlib.plugins.git.config import (
 
43
    GitBranchConfig,
 
44
    )
 
45
from bzrlib.plugins.git.errors import (
 
46
    NoSuchRef,
 
47
    )
 
48
 
 
49
 
 
50
class GitPullResult(branch.PullResult):
 
51
 
 
52
    def _lookup_revno(self, revid):
 
53
        assert isinstance(revid, str), "was %r" % revid
 
54
        # Try in source branch first, it'll be faster
 
55
        return self.target_branch.revision_id_to_revno(revid)
 
56
 
 
57
    @property
 
58
    def old_revno(self):
 
59
        return self._lookup_revno(self.old_revid)
 
60
 
 
61
    @property
 
62
    def new_revno(self):
 
63
        return self._lookup_revno(self.new_revid)
 
64
 
 
65
 
 
66
class LocalGitTagDict(tag.BasicTags):
 
67
    """Dictionary with tags in a local repository."""
38
68
 
39
69
    def __init__(self, branch):
40
70
        self.branch = branch
48
78
                v = obj.object[1]
49
79
                obj = self.repository._git.get_object(v)
50
80
            if not isinstance(obj, Commit):
51
 
                mutter("Tag %s points at object %r that is not a commit, ignoring", k, obj)
 
81
                mutter("Tag %s points at object %r that is not a commit, "
 
82
                       "ignoring", k, obj)
52
83
                continue
53
84
            ret[k] = self.branch.mapping.revision_id_foreign_to_bzr(v)
54
85
        return ret
57
88
        self.repository._git.tags[name] = revid
58
89
 
59
90
 
60
 
class GitBranchConfig(config.BranchConfig):
61
 
    """BranchConfig that uses locations.conf in place of branch.conf"""
62
 
 
63
 
    def __init__(self, branch):
64
 
        config.BranchConfig.__init__(self, branch)
65
 
        # do not provide a BranchDataConfig
66
 
        self.option_sources = self.option_sources[0], self.option_sources[2]
67
 
 
68
 
    def set_user_option(self, name, value, store=config.STORE_BRANCH, warn_masked=False):
69
 
        """Force local to True"""
70
 
        config.BranchConfig.set_user_option(self, name, value, store=config.STORE_LOCATION, warn_masked=warn_masked)
71
 
 
72
 
 
73
91
class GitBranchFormat(branch.BranchFormat):
74
92
 
75
93
    def get_format_description(self):
78
96
    def supports_tags(self):
79
97
        return True
80
98
 
81
 
 
82
 
class GitBranch(ForeignBranch):
 
99
    def make_tags(self, branch):
 
100
        if getattr(branch.repository, "get_refs", None) is not None:
 
101
            from bzrlib.plugins.git.remote import RemoteGitTagDict
 
102
            return RemoteGitTagDict(branch)
 
103
        else:
 
104
            return LocalGitTagDict(branch)
 
105
 
 
106
 
 
107
class GitBranch(foreign.ForeignBranch):
83
108
    """An adapter to git repositories for bzr Branch objects."""
84
109
 
85
110
    def __init__(self, bzrdir, repository, name, head, lockfiles):
86
111
        self.repository = repository
87
 
        super(GitBranch, self).__init__(repository.get_mapping())
 
112
        self._format = GitBranchFormat()
88
113
        self.control_files = lockfiles
89
114
        self.bzrdir = bzrdir
 
115
        super(GitBranch, self).__init__(repository.get_mapping())
90
116
        self.name = name
91
117
        self.head = head
92
118
        self.base = bzrdir.transport.base
93
 
        self._format = GitBranchFormat()
 
119
 
 
120
    def _get_nick(self, local=False, possible_master_transports=None):
 
121
        """Find the nick name for this branch.
 
122
 
 
123
        :return: Branch nick
 
124
        """
 
125
        return self.name
 
126
 
 
127
    def _set_nick(self, nick):
 
128
        raise NotImplementedError
 
129
 
 
130
    nick = property(_get_nick, _set_nick)
94
131
 
95
132
    def dpull(self, source, stop_revision=None):
96
133
        if stop_revision is None:
97
134
            stop_revision = source.last_revision()
98
135
        # FIXME: Check for diverged branches
99
136
        revidmap = self.repository.dfetch(source.repository, stop_revision)
100
 
        self.head, self.mapping = self.mapping.revision_id_bzr_to_foreign(revidmap[stop_revision])
 
137
        if revidmap != {}:
 
138
            self.generate_revision_history(revidmap[stop_revision])
101
139
        return revidmap
102
140
 
 
141
    def generate_revision_history(self, revid, old_revid=None):
 
142
        # FIXME: Check that old_revid is in the ancestry of revid
 
143
        newhead, self.mapping = self.mapping.revision_id_bzr_to_foreign(revid)
 
144
        self._set_head(newhead)
 
145
 
 
146
    def _set_head(self, head):
 
147
        self.head = head
 
148
        self.repository._git.set_ref(self.name, self.head)
 
149
 
103
150
    def lock_write(self):
104
151
        self.control_files.lock_write()
105
152
 
109
156
 
110
157
    def get_parent(self):
111
158
        """See Branch.get_parent()."""
 
159
        # FIXME: Set "origin" url from .git/config ?
112
160
        return None
113
161
 
114
162
    def set_parent(self, url):
 
163
        # FIXME: Set "origin" url in .git/config ?
115
164
        pass
116
165
 
117
166
    def lock_read(self):
125
174
 
126
175
 
127
176
class LocalGitBranch(GitBranch):
 
177
    """A local Git branch."""
128
178
 
129
179
    @needs_read_lock
130
180
    def last_revision(self):
133
183
            return revision.NULL_REVISION
134
184
        return self.mapping.revision_id_foreign_to_bzr(self.head)
135
185
 
136
 
    def create_checkout(self, to_location, revision_id=None, 
137
 
                        lightweight=False, accelerator_tree=None, hardlink=False):
 
186
    def _get_checkout_format(self):
 
187
        """Return the most suitable metadir for a checkout of this branch.
 
188
        Weaves are used if this branch's repository uses weaves.
 
189
        """
 
190
        format = self.repository.bzrdir.checkout_metadir()
 
191
        format.set_branch_format(self._format)
 
192
        return format
 
193
 
 
194
    def create_checkout(self, to_location, revision_id=None, lightweight=False,
 
195
        accelerator_tree=None, hardlink=False):
138
196
        if lightweight:
139
 
            raise LightWeightCheckoutsNotSupported()
140
 
        return self._create_heavyweight_checkout(to_location, revision_id, hardlink)
 
197
            t = transport.get_transport(to_location)
 
198
            t.ensure_base()
 
199
            format = self._get_checkout_format()
 
200
            checkout = format.initialize_on_transport(t)
 
201
            from_branch = branch.BranchReferenceFormat().initialize(checkout, 
 
202
                self)
 
203
            tree = checkout.create_workingtree(revision_id,
 
204
                from_branch=from_branch, hardlink=hardlink)
 
205
            return tree
 
206
        else:
 
207
            return self._create_heavyweight_checkout(to_location, revision_id,
 
208
            hardlink)
141
209
 
142
210
    def _create_heavyweight_checkout(self, to_location, revision_id=None, 
143
211
                                     hardlink=False):
157
225
        checkout_branch.pull(self, stop_revision=revision_id)
158
226
        return checkout.create_workingtree(revision_id, hardlink=hardlink)
159
227
 
160
 
    def _make_tags(self):
161
 
        return GitTagDict(self)
162
 
 
163
228
    def _gen_revision_history(self):
164
229
        if self.head is None:
165
230
            return []
166
 
        ret = list(self.repository.iter_reverse_revision_history(self.last_revision()))
 
231
        ret = list(self.repository.iter_reverse_revision_history(
 
232
            self.last_revision()))
167
233
        ret.reverse()
168
234
        return ret
169
235
 
183
249
    def supports_tags(self):
184
250
        return True
185
251
 
186
 
    def sprout(self, to_bzrdir, revision_id=None):
187
 
        """See Branch.sprout()."""
188
 
        result = to_bzrdir.create_branch()
189
 
        self.copy_content_into(result, revision_id=revision_id)
190
 
        result.set_parent(self.bzrdir.root_transport.base)
191
 
        return result
 
252
 
 
253
class GitBranchPullResult(branch.PullResult):
 
254
 
 
255
    def report(self, to_file):
 
256
        if not is_quiet():
 
257
            if self.old_revid == self.new_revid:
 
258
                to_file.write('No revisions to pull.\n')
 
259
            else:
 
260
                to_file.write('Now on revision %d (git sha: %s).\n' % 
 
261
                        (self.new_revno, self.new_git_head))
 
262
        self._show_tag_conficts(to_file)
192
263
 
193
264
 
194
265
class InterGitGenericBranch(branch.InterBranch):
 
266
    """InterBranch implementation that pulls from Git into bzr."""
195
267
 
196
268
    @classmethod
197
269
    def is_compatible(self, source, target):
198
 
        return isinstance(source, GitBranch)
 
270
        return (isinstance(source, GitBranch) and 
 
271
                not isinstance(target, GitBranch))
199
272
 
200
273
    def update_revisions(self, stop_revision=None, overwrite=False,
201
274
        graph=None):
202
275
        """See InterBranch.update_revisions()."""
203
 
        # TODO: stop_revision, overwrite
204
 
        interrepo = repository.InterRepository.get(self.source.repository, self.target.repository)
 
276
        interrepo = repository.InterRepository.get(self.source.repository, 
 
277
            self.target.repository)
 
278
        self._head = None
205
279
        self._last_revid = None
206
280
        def determine_wants(heads):
207
281
            if not self.source.name in heads:
208
 
                raise BzrError("No such remote branch '%s', found: %r" % (
209
 
                    self.source.name, heads.keys()))
210
 
            head = heads[self.source.name]
211
 
            self._last_revid = self.source.mapping.revision_id_foreign_to_bzr(head)
 
282
                raise NoSuchRef(self.source.name, heads.keys())
 
283
            if stop_revision is not None:
 
284
                self._last_revid = stop_revision
 
285
                self._head, mapping = self.source.repository.lookup_git_revid(
 
286
                    stop_revision)
 
287
            else:
 
288
                self._head = heads[self.source.name]
 
289
                self._last_revid = \
 
290
                    self.source.mapping.revision_id_foreign_to_bzr(self._head)
212
291
            if self.target.repository.has_revision(self._last_revid):
213
292
                return []
214
 
            return [head]
 
293
            return [self._head]
215
294
        interrepo.fetch_objects(determine_wants, self.source.mapping)
216
 
        self.target.generate_revision_history(self._last_revid)
 
295
        if overwrite:
 
296
            prev_last_revid = None
 
297
        else:
 
298
            prev_last_revid = self.target.last_revision()
 
299
        self.target.generate_revision_history(self._last_revid, prev_last_revid)
 
300
 
 
301
    def pull(self, overwrite=False, stop_revision=None,
 
302
             possible_transports=None, _hook_master=None, run_hooks=True,
 
303
             _override_hook_target=None):
 
304
        """See Branch.pull.
 
305
 
 
306
        :param _hook_master: Private parameter - set the branch to
 
307
            be supplied as the master to pull hooks.
 
308
        :param run_hooks: Private parameter - if false, this branch
 
309
            is being called because it's the master of the primary branch,
 
310
            so it should not run its hooks.
 
311
        :param _override_hook_target: Private parameter - set the branch to be
 
312
            supplied as the target_branch to pull hooks.
 
313
        """
 
314
        result = GitBranchPullResult()
 
315
        result.source_branch = self.source
 
316
        if _override_hook_target is None:
 
317
            result.target_branch = self.target
 
318
        else:
 
319
            result.target_branch = _override_hook_target
 
320
        self.source.lock_read()
 
321
        try:
 
322
            # We assume that during 'pull' the target repository is closer than
 
323
            # the source one.
 
324
            graph = self.target.repository.get_graph(self.source.repository)
 
325
            result.old_revno, result.old_revid = \
 
326
                self.target.last_revision_info()
 
327
            self.update_revisions(stop_revision, overwrite=overwrite, 
 
328
                graph=graph)
 
329
            result.new_git_head = self._head
 
330
            result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
 
331
                overwrite)
 
332
            result.new_revno, result.new_revid = self.target.last_revision_info()
 
333
            if _hook_master:
 
334
                result.master_branch = _hook_master
 
335
                result.local_branch = result.target_branch
 
336
            else:
 
337
                result.master_branch = result.target_branch
 
338
                result.local_branch = None
 
339
            if run_hooks:
 
340
                for hook in branch.Branch.hooks['post_pull']:
 
341
                    hook(result)
 
342
        finally:
 
343
            self.source.unlock()
 
344
        return result
 
345
 
 
346
 
217
347
 
218
348
 
219
349
branch.InterBranch.register_optimiser(InterGitGenericBranch)
 
350
 
 
351
 
 
352
class InterGitRemoteLocalBranch(branch.InterBranch):
 
353
    """InterBranch implementation that pulls between Git branches."""
 
354
 
 
355
    @classmethod
 
356
    def is_compatible(self, source, target):
 
357
        from bzrlib.plugins.git.remote import RemoteGitBranch
 
358
        return (isinstance(source, RemoteGitBranch) and 
 
359
                isinstance(target, LocalGitBranch))
 
360
 
 
361
    def pull(self, stop_revision=None, overwrite=False, 
 
362
        possible_transports=None):
 
363
        result = GitPullResult()
 
364
        result.source_branch = self.source
 
365
        result.target_branch = self.target
 
366
        interrepo = repository.InterRepository.get(self.source.repository, 
 
367
            self.target.repository)
 
368
        result.old_revid = self.target.last_revision()
 
369
        if stop_revision is None:
 
370
            stop_revision = self.source.last_revision()
 
371
        interrepo.fetch(revision_id=stop_revision)
 
372
        self.target.generate_revision_history(stop_revision, result.old_revid)
 
373
        result.new_revid = self.target.last_revision()
 
374
        return result
 
375
 
 
376
 
 
377
branch.InterBranch.register_optimiser(InterGitRemoteLocalBranch)