/brz/remove-bazaar

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  • Committer: Jelmer Vernooij
  • Date: 2009-04-02 16:10:24 UTC
  • mto: (0.200.326 trunk)
  • mto: This revision was merged to the branch mainline in revision 6960.
  • Revision ID: jelmer@samba.org-20090402161024-ngoay3s4mpsq5pts
Add -Dverify flag (not fully implemented yet).

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branch.py
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# Copyright (C) 2007 Canonical Ltd
 
2
# Copyright (C) 2009 Jelmer Vernooij <jelmer@samba.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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"""An adapter between a Git Branch and a Bazaar Branch"""
18
19
 
 
20
from dulwich.objects import (
 
21
    Commit,
 
22
    Tag,
 
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    )
 
24
 
19
25
from bzrlib import (
20
26
    branch,
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    config,
 
28
    repository,
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    revision,
23
 
    )
24
 
from bzrlib.decorators import needs_read_lock
25
 
 
26
 
from bzrlib.plugins.git import ids
 
30
    tag,
 
31
    transport,
 
32
    )
 
33
from bzrlib.decorators import (
 
34
    needs_read_lock,
 
35
    )
 
36
from bzrlib.trace import (
 
37
    mutter,
 
38
    )
 
39
 
 
40
from bzrlib.plugins.git.errors import (
 
41
    NoSuchRef,
 
42
    )
 
43
from bzrlib.plugins.git.foreign import (
 
44
    ForeignBranch,
 
45
    )
 
46
 
 
47
 
 
48
class LocalGitTagDict(tag.BasicTags):
 
49
    """Dictionary with tags in a local repository."""
 
50
 
 
51
    def __init__(self, branch):
 
52
        self.branch = branch
 
53
        self.repository = branch.repository
 
54
 
 
55
    def get_tag_dict(self):
 
56
        ret = {}
 
57
        for k,v in self.repository._git.tags.iteritems():
 
58
            obj = self.repository._git.get_object(v)
 
59
            while isinstance(obj, Tag):
 
60
                v = obj.object[1]
 
61
                obj = self.repository._git.get_object(v)
 
62
            if not isinstance(obj, Commit):
 
63
                mutter("Tag %s points at object %r that is not a commit, "
 
64
                       "ignoring", k, obj)
 
65
                continue
 
66
            ret[k] = self.branch.mapping.revision_id_foreign_to_bzr(v)
 
67
        return ret
 
68
 
 
69
    def set_tag(self, name, revid):
 
70
        self.repository._git.tags[name] = revid
27
71
 
28
72
 
29
73
class GitBranchConfig(config.BranchConfig):
34
78
        # do not provide a BranchDataConfig
35
79
        self.option_sources = self.option_sources[0], self.option_sources[2]
36
80
 
37
 
    def set_user_option(self, name, value, local=False):
 
81
    def set_user_option(self, name, value, store=config.STORE_BRANCH,
 
82
            warn_masked=False):
38
83
        """Force local to True"""
39
 
        config.BranchConfig.set_user_option(self, name, value, local=True)
 
84
        config.BranchConfig.set_user_option(self, name, value,
 
85
            store=config.STORE_LOCATION, warn_masked=warn_masked)
40
86
 
41
87
 
42
88
class GitBranchFormat(branch.BranchFormat):
44
90
    def get_format_description(self):
45
91
        return 'Git Branch'
46
92
 
47
 
 
48
 
class GitBranch(branch.Branch):
 
93
    def supports_tags(self):
 
94
        return True
 
95
 
 
96
    def make_tags(self, branch):
 
97
        if getattr(branch.repository, "get_refs", None) is not None:
 
98
            from bzrlib.plugins.git.remote import RemoteGitTagDict
 
99
            return RemoteGitTagDict(branch)
 
100
        else:
 
101
            return LocalGitTagDict(branch)
 
102
 
 
103
 
 
104
class GitBranch(ForeignBranch):
49
105
    """An adapter to git repositories for bzr Branch objects."""
50
106
 
51
 
    def __init__(self, bzrdir, repository, head, base, lockfiles):
52
 
        super(GitBranch, self).__init__()
 
107
    def __init__(self, bzrdir, repository, name, head, lockfiles):
 
108
        self.repository = repository
 
109
        self._format = GitBranchFormat()
53
110
        self.control_files = lockfiles
54
111
        self.bzrdir = bzrdir
55
 
        self.repository = repository
 
112
        super(GitBranch, self).__init__(repository.get_mapping())
 
113
        self.name = name
56
114
        self.head = head
57
 
        self.base = base
58
 
        self._format = GitBranchFormat()
 
115
        self.base = bzrdir.transport.base
 
116
 
 
117
    def _get_nick(self, local=False, possible_master_transports=None):
 
118
        """Find the nick name for this branch.
 
119
 
 
120
        :return: Branch nick
 
121
        """
 
122
        return self.name
 
123
 
 
124
    nick = property(_get_nick)
 
125
 
 
126
    def dpull(self, source, stop_revision=None):
 
127
        if stop_revision is None:
 
128
            stop_revision = source.last_revision()
 
129
        # FIXME: Check for diverged branches
 
130
        revidmap = self.repository.dfetch(source.repository, stop_revision)
 
131
        self.head, self.mapping = self.mapping.revision_id_bzr_to_foreign(
 
132
            revidmap[stop_revision])
 
133
        self.repository._git.set_ref(self.name, self.head)
 
134
        return revidmap
59
135
 
60
136
    def lock_write(self):
61
137
        self.control_files.lock_write()
62
138
 
 
139
    def get_stacked_on_url(self):
 
140
        # Git doesn't do stacking (yet...)
 
141
        return None
 
142
 
 
143
    def get_parent(self):
 
144
        """See Branch.get_parent()."""
 
145
        # FIXME: Set "origin" url from .git/config ?
 
146
        return None
 
147
 
 
148
    def set_parent(self, url):
 
149
        # FIXME: Set "origin" url in .git/config ?
 
150
        pass
 
151
 
 
152
    def lock_read(self):
 
153
        self.control_files.lock_read()
 
154
 
 
155
    def unlock(self):
 
156
        self.control_files.unlock()
 
157
 
 
158
    def get_physical_lock_status(self):
 
159
        return False
 
160
 
 
161
 
 
162
class LocalGitBranch(GitBranch):
 
163
    """A local Git branch."""
 
164
 
63
165
    @needs_read_lock
64
166
    def last_revision(self):
65
167
        # perhaps should escape this ?
66
168
        if self.head is None:
67
169
            return revision.NULL_REVISION
68
 
        return ids.convert_revision_id_git_to_bzr(self.head)
69
 
 
70
 
    def get_parent(self):
71
 
        """See Branch.get_parent()."""
72
 
        return None
73
 
 
74
 
    def get_stacked_on_url(self):
75
 
        return None
 
170
        return self.mapping.revision_id_foreign_to_bzr(self.head)
 
171
 
 
172
    def _get_checkout_format(self):
 
173
        """Return the most suitable metadir for a checkout of this branch.
 
174
        Weaves are used if this branch's repository uses weaves.
 
175
        """
 
176
        format = self.repository.bzrdir.checkout_metadir()
 
177
        format.set_branch_format(self._format)
 
178
        return format
 
179
 
 
180
    def create_checkout(self, to_location, revision_id=None, lightweight=False,
 
181
        accelerator_tree=None, hardlink=False):
 
182
        if lightweight:
 
183
            t = transport.get_transport(to_location)
 
184
            t.ensure_base()
 
185
            format = self._get_checkout_format()
 
186
            checkout = format.initialize_on_transport(t)
 
187
            from_branch = branch.BranchReferenceFormat().initialize(checkout, 
 
188
                self)
 
189
            tree = checkout.create_workingtree(revision_id,
 
190
                from_branch=from_branch, hardlink=hardlink)
 
191
            return tree
 
192
        else:
 
193
            return self._create_heavyweight_checkout(to_location, revision_id,
 
194
            hardlink)
 
195
 
 
196
    def _create_heavyweight_checkout(self, to_location, revision_id=None, 
 
197
                                     hardlink=False):
 
198
        """Create a new heavyweight checkout of this branch.
 
199
 
 
200
        :param to_location: URL of location to create the new checkout in.
 
201
        :param revision_id: Revision that should be the tip of the checkout.
 
202
        :param hardlink: Whether to hardlink
 
203
        :return: WorkingTree object of checkout.
 
204
        """
 
205
        checkout_branch = BzrDir.create_branch_convenience(
 
206
            to_location, force_new_tree=False, format=get_rich_root_format())
 
207
        checkout = checkout_branch.bzrdir
 
208
        checkout_branch.bind(self)
 
209
        # pull up to the specified revision_id to set the initial 
 
210
        # branch tip correctly, and seed it with history.
 
211
        checkout_branch.pull(self, stop_revision=revision_id)
 
212
        return checkout.create_workingtree(revision_id, hardlink=hardlink)
76
213
 
77
214
    def _gen_revision_history(self):
78
215
        if self.head is None:
79
216
            return []
80
 
        skip = 0
81
 
        cms = None
82
 
        ret = []
83
 
        max_count = 1000
84
 
        nextid = self.head
85
 
        while cms != []:
86
 
            cms = self.repository._git.commits(self.head, max_count=max_count, skip=skip)
87
 
            skip += max_count
88
 
            for cm in cms:
89
 
                if cm.id == nextid:
90
 
                    ret.append(ids.convert_revision_id_git_to_bzr(cm.id))
91
 
                    if cm.parents == []:
92
 
                        nextid = None
93
 
                    else:
94
 
                        nextid = cm.parents[0].id
 
217
        ret = list(self.repository.iter_reverse_revision_history(
 
218
            self.last_revision()))
95
219
        ret.reverse()
96
220
        return ret
97
221
 
98
222
    def get_config(self):
99
223
        return GitBranchConfig(self)
100
224
 
101
 
    def lock_read(self):
102
 
        self.control_files.lock_read()
103
 
 
104
 
    def unlock(self):
105
 
        self.control_files.unlock()
106
 
 
107
 
    def get_physical_lock_status(self):
108
 
        return False
109
 
 
110
225
    def get_push_location(self):
111
226
        """See Branch.get_push_location."""
112
227
        push_loc = self.get_config().get_user_option('push_location')
115
230
    def set_push_location(self, location):
116
231
        """See Branch.set_push_location."""
117
232
        self.get_config().set_user_option('push_location', location,
118
 
                                          local=True)
 
233
                                          store=config.STORE_LOCATION)
119
234
 
120
235
    def supports_tags(self):
121
 
        return False
 
236
        return True
 
237
 
 
238
 
 
239
class InterGitGenericBranch(branch.InterBranch):
 
240
    """InterBranch implementation that pulls from Git into bzr."""
 
241
 
 
242
    @classmethod
 
243
    def is_compatible(self, source, target):
 
244
        return isinstance(source, GitBranch)
 
245
 
 
246
    def update_revisions(self, stop_revision=None, overwrite=False,
 
247
        graph=None):
 
248
        """See InterBranch.update_revisions()."""
 
249
        interrepo = repository.InterRepository.get(self.source.repository, 
 
250
            self.target.repository)
 
251
        self._last_revid = None
 
252
        def determine_wants(heads):
 
253
            if not self.source.name in heads:
 
254
                raise NoSuchRef(self.source.name, heads.keys())
 
255
            if stop_revision is not None:
 
256
                self._last_revid = stop_revision
 
257
                head, mapping = self.source.repository.lookup_git_revid(
 
258
                    stop_revision)
 
259
            else:
 
260
                head = heads[self.source.name]
 
261
                self._last_revid = \
 
262
                    self.source.mapping.revision_id_foreign_to_bzr(head)
 
263
            if self.target.repository.has_revision(self._last_revid):
 
264
                return []
 
265
            return [head]
 
266
        interrepo.fetch_objects(determine_wants, self.source.mapping)
 
267
        if overwrite:
 
268
            prev_last_revid = None
 
269
        else:
 
270
            prev_last_revid = self.target.last_revision()
 
271
        self.target.generate_revision_history(self._last_revid, prev_last_revid)
 
272
 
 
273
 
 
274
branch.InterBranch.register_optimiser(InterGitGenericBranch)