/brz/remove-bazaar

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pass update_refs to dfetch_refs.

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push.py
 
1
# Copyright (C) 2009-2010 Jelmer Vernooij <jelmer@samba.org>
 
2
#
 
3
# This program is free software; you can redistribute it and/or modify
 
4
# it under the terms of the GNU General Public License as published by
 
5
# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
7
#
 
8
# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
11
# GNU General Public License for more details.
 
12
#
 
13
# You should have received a copy of the GNU General Public License
 
14
# along with this program; if not, write to the Free Software
 
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
16
 
 
17
"""Push implementation that simply prints message saying push is not supported."""
 
18
 
 
19
from bzrlib import (
 
20
    errors,
 
21
    ui,
 
22
    )
 
23
from bzrlib.graph import (
 
24
    PendingAncestryResult,
 
25
    )
 
26
from bzrlib.repository import (
 
27
    InterRepository,
 
28
    )
 
29
from bzrlib.revision import (
 
30
    NULL_REVISION,
 
31
    )
 
32
 
 
33
from bzrlib.plugins.git.errors import (
 
34
    NoPushSupport,
 
35
    )
 
36
from bzrlib.plugins.git.object_store import (
 
37
    BazaarObjectStore,
 
38
    )
 
39
from bzrlib.plugins.git.repository import (
 
40
    GitRepository,
 
41
    LocalGitRepository,
 
42
    GitRepositoryFormat,
 
43
    )
 
44
from bzrlib.plugins.git.remote import (
 
45
    RemoteGitRepository,
 
46
    )
 
47
 
 
48
 
 
49
class MissingObjectsIterator(object):
 
50
    """Iterate over git objects that are missing from a target repository.
 
51
 
 
52
    """
 
53
 
 
54
    def __init__(self, store, source, pb=None):
 
55
        """Create a new missing objects iterator.
 
56
 
 
57
        """
 
58
        self.source = source
 
59
        self._object_store = store
 
60
        self._pending = []
 
61
        self.pb = pb
 
62
 
 
63
    def import_revisions(self, revids, roundtrip):
 
64
        for i, revid in enumerate(revids):
 
65
            if self.pb:
 
66
                self.pb.update("pushing revisions", i, len(revids))
 
67
            git_commit = self.import_revision(revid, roundtrip)
 
68
            yield (revid, git_commit)
 
69
 
 
70
    def import_revision(self, revid, roundtrip):
 
71
        """Import the gist of a revision into this Git repository.
 
72
 
 
73
        """
 
74
        tree = self._object_store.tree_cache.revision_tree(revid)
 
75
        rev = self.source.get_revision(revid)
 
76
        commit = None
 
77
        for path, obj, ie in self._object_store._revision_to_objects(rev, tree,
 
78
            roundtrip):
 
79
            if obj.type_name == "commit":
 
80
                commit = obj
 
81
            self._pending.append((obj, path))
 
82
        return commit.id
 
83
 
 
84
    def __len__(self):
 
85
        return len(self._pending)
 
86
 
 
87
    def __iter__(self):
 
88
        return iter(self._pending)
 
89
 
 
90
 
 
91
class InterToGitRepository(InterRepository):
 
92
    """InterRepository that copies into a Git repository."""
 
93
 
 
94
    _matching_repo_format = GitRepositoryFormat()
 
95
 
 
96
    def __init__(self, source, target):
 
97
        super(InterToGitRepository, self).__init__(source, target)
 
98
        self.mapping = self.target.get_mapping()
 
99
        self.source_store = BazaarObjectStore(self.source, self.mapping)
 
100
 
 
101
    @staticmethod
 
102
    def _get_repo_format_to_test():
 
103
        return None
 
104
 
 
105
    def copy_content(self, revision_id=None, pb=None):
 
106
        """See InterRepository.copy_content."""
 
107
        self.fetch(revision_id, pb, find_ghosts=False)
 
108
 
 
109
 
 
110
class InterToLocalGitRepository(InterToGitRepository):
 
111
 
 
112
    def __init__(self, source, target):
 
113
        super(InterToLocalGitRepository, self).__init__(source, target)
 
114
        self.target_store = self.target._git.object_store
 
115
        self.target_refs = self.target._git.refs
 
116
 
 
117
    def missing_revisions(self, stop_revisions, check_revid):
 
118
        missing = []
 
119
        graph = self.source.get_graph()
 
120
        pb = ui.ui_factory.nested_progress_bar()
 
121
        try:
 
122
            for revid, _ in graph.iter_ancestry(stop_revisions):
 
123
                pb.update("determining revisions to fetch", len(missing))
 
124
                if not check_revid(revid):
 
125
                    missing.append(revid)
 
126
        finally:
 
127
            pb.finished()
 
128
        return graph.iter_topo_order(missing)
 
129
 
 
130
    def fetch_refs(self, update_refs):
 
131
        old_refs = self.target._git.get_refs()
 
132
        new_refs = update_refs(old_refs)
 
133
        fetch_spec = PendingAncestryResult(new_refs.values(), self.source)
 
134
        self.fetch(fetch_spec=fetch_spec)
 
135
        return old_refs, new_refs
 
136
 
 
137
    def dfetch_refs(self, update_refs):
 
138
        old_refs = self.target._git.get_refs()
 
139
        new_refs = update_refs(old_refs)
 
140
        revidmap, gitidmap = self.dfetch(new_refs.values())
 
141
        for name, revid in new_refs.iteritems():
 
142
            try:
 
143
                gitid = gitidmap[revid]
 
144
            except KeyError:
 
145
                gitid = self.source_store._lookup_revision_sha1(revid)
 
146
            self.target._git.refs[name] = gitid
 
147
            new_refs[name] = revid
 
148
        return revidmap, old_refs, new_refs
 
149
 
 
150
    def _find_missing_revs(self, stop_revisions):
 
151
        def check_revid(revid):
 
152
            if revid == NULL_REVISION:
 
153
                return True
 
154
            sha_id = self.source_store._lookup_revision_sha1(revid)
 
155
            try:
 
156
                return (sha_id in self.target_store)
 
157
            except errors.NoSuchRevision:
 
158
                # Ghost, can't push
 
159
                return True
 
160
        return list(self.missing_revisions(stop_revisions, check_revid))
 
161
 
 
162
    def dfetch(self, stop_revisions):
 
163
        """Import the gist of the ancestry of a particular revision."""
 
164
        gitidmap = {}
 
165
        revidmap = {}
 
166
        self.source.lock_read()
 
167
        try:
 
168
            todo = self._find_missing_revs(stop_revisions)
 
169
            pb = ui.ui_factory.nested_progress_bar()
 
170
            try:
 
171
                object_generator = MissingObjectsIterator(self.source_store,
 
172
                    self.source, pb)
 
173
                for old_bzr_revid, git_commit in object_generator.import_revisions(
 
174
                    todo, roundtrip=False):
 
175
                    new_bzr_revid = self.mapping.revision_id_foreign_to_bzr(git_commit)
 
176
                    revidmap[old_bzr_revid] = new_bzr_revid
 
177
                    gitidmap[old_bzr_revid] = git_commit
 
178
                self.target_store.add_objects(object_generator)
 
179
            finally:
 
180
                pb.finished()
 
181
        finally:
 
182
            self.source.unlock()
 
183
        return revidmap, gitidmap
 
184
 
 
185
    def fetch(self, revision_id=None, pb=None, find_ghosts=False,
 
186
            fetch_spec=None):
 
187
        if revision_id is not None:
 
188
            stop_revisions = [revision_id]
 
189
        elif fetch_spec is not None:
 
190
            stop_revisions = fetch_spec.heads
 
191
        else:
 
192
            stop_revisions = self.source.all_revision_ids()
 
193
        self.source.lock_read()
 
194
        try:
 
195
            todo = self._find_missing_revs(stop_revisions)
 
196
            pb = ui.ui_factory.nested_progress_bar()
 
197
            try:
 
198
                object_generator = MissingObjectsIterator(self.source_store,
 
199
                    self.source, pb)
 
200
                for (revid, git_sha) in object_generator.import_revisions(
 
201
                    todo, roundtrip=True):
 
202
                    try:
 
203
                        self.mapping.revision_id_bzr_to_foreign(revid)
 
204
                    except errors.InvalidRevisionId:
 
205
                        self.target_refs[self.mapping.revid_as_refname(revid)] = git_sha
 
206
                self.target_store.add_objects(object_generator)
 
207
            finally:
 
208
                pb.finished()
 
209
        finally:
 
210
            self.source.unlock()
 
211
 
 
212
    @staticmethod
 
213
    def is_compatible(source, target):
 
214
        """Be compatible with GitRepository."""
 
215
        return (not isinstance(source, GitRepository) and
 
216
                isinstance(target, LocalGitRepository))
 
217
 
 
218
 
 
219
class InterToRemoteGitRepository(InterToGitRepository):
 
220
 
 
221
    def dfetch_refs(self, update_refs):
 
222
        """Import the gist of the ancestry of a particular revision."""
 
223
        revidmap = {}
 
224
        def determine_wants(old_refs):
 
225
            ret = {}
 
226
            self.old_refs = old_refs
 
227
            self.new_refs = update_refs(self.old_refs)
 
228
            for name, revid in self.new_refs.iteritems():
 
229
                ret[name] = self.source_store._lookup_revision_sha1(revid)
 
230
            return ret
 
231
        self.source.lock_read()
 
232
        try:
 
233
            new_refs = self.target.send_pack(determine_wants,
 
234
                    self.source_store.generate_lossy_pack_contents)
 
235
        finally:
 
236
            self.source.unlock()
 
237
        return revidmap, self.old_refs, self.new_refs
 
238
 
 
239
    def fetch(self, revision_id=None, pb=None, find_ghosts=False,
 
240
            fetch_spec=None):
 
241
        raise NoPushSupport()
 
242
 
 
243
    @staticmethod
 
244
    def is_compatible(source, target):
 
245
        """Be compatible with GitRepository."""
 
246
        return (not isinstance(source, GitRepository) and
 
247
                isinstance(target, RemoteGitRepository))