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  • Committer: Jelmer Vernooij
  • Date: 2009-09-10 13:13:15 UTC
  • mto: (0.200.602 trunk)
  • mto: This revision was merged to the branch mainline in revision 6960.
  • Revision ID: jelmer@samba.org-20090910131315-6890xg58pl2jseml
Allow serving remote URLs.

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repository.py
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"""An adapter between a Git Repository and a Bazaar Branch"""
19
19
 
 
20
import bzrlib
20
21
from bzrlib import (
21
22
    errors,
 
23
    graph,
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24
    inventory,
 
25
    osutils,
23
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    repository,
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    revision,
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    revisiontree,
31
34
from bzrlib.plugins.git.commit import (
32
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    GitCommitBuilder,
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36
    )
 
37
from bzrlib.plugins.git.inventory import (
 
38
    GitInventory,
 
39
    )
34
40
from bzrlib.plugins.git.mapping import (
35
41
    default_mapping,
36
42
    foreign_git,
37
43
    mapping_registry,
38
44
    )
39
 
from bzrlib.plugins.git.tree import (
40
 
    GitRevisionTree,
41
 
    )
42
45
from bzrlib.plugins.git.versionedfiles import (
43
46
    GitRevisions,
44
47
    GitTexts,
45
48
    )
46
49
 
47
50
 
48
 
from dulwich.objects import (
49
 
    Commit,
50
 
    )
51
 
 
52
 
 
53
51
class GitRepository(ForeignRepository):
54
52
    """An adapter to git repositories for bzr."""
55
53
 
58
56
    vcs = foreign_git
59
57
 
60
58
    def __init__(self, gitdir, lockfiles):
61
 
        ForeignRepository.__init__(self, GitRepositoryFormat(), gitdir,
 
59
        ForeignRepository.__init__(self, GitRepositoryFormat(), gitdir, 
62
60
            lockfiles)
63
61
        from bzrlib.plugins.git import fetch, push
64
 
        for optimiser in [fetch.InterRemoteGitNonGitRepository,
 
62
        for optimiser in [fetch.InterRemoteGitNonGitRepository, 
65
63
                          fetch.InterLocalGitNonGitRepository,
66
64
                          fetch.InterGitGitRepository,
67
65
                          push.InterToLocalGitRepository,
69
67
            repository.InterRepository.register_optimiser(optimiser)
70
68
 
71
69
    def is_shared(self):
72
 
        return False
 
70
        return True
73
71
 
74
72
    def supports_rich_root(self):
75
73
        return True
76
74
 
77
 
    def _warn_if_deprecated(self, branch=None):
 
75
    def _warn_if_deprecated(self):
78
76
        # This class isn't deprecated
79
77
        pass
80
78
 
91
89
        interrepo = repository.InterRepository.get(source, self)
92
90
        return interrepo.dfetch(stop_revision)
93
91
 
 
92
    def dfetch_refs(self, source, stop_revision):
 
93
        interrepo = repository.InterRepository.get(source, self)
 
94
        return interrepo.dfetch_refs(stop_revision)
 
95
 
94
96
 
95
97
class LocalGitRepository(GitRepository):
96
98
    """Git repository on the file system."""
97
99
 
98
100
    def __init__(self, gitdir, lockfiles):
 
101
        # FIXME: This also caches negatives. Need to be more careful 
 
102
        # about this once we start writing to git
 
103
        self._parents_provider = graph.CachingParentsProvider(self)
99
104
        GitRepository.__init__(self, gitdir, lockfiles)
100
105
        self.base = gitdir.root_transport.base
101
106
        self._git = gitdir._git
 
107
        self.texts = None
102
108
        self.signatures = None
103
 
        self.revisions = GitRevisions(self, self._git.object_store)
 
109
        self.revisions = GitRevisions(self._git.object_store)
104
110
        self.inventories = None
105
111
        self.texts = GitTexts(self)
106
112
 
107
 
    def _iter_revision_ids(self):
108
 
        for sha in self._git.object_store:
109
 
            o = self._git.object_store[sha]
110
 
            if not isinstance(o, Commit):
111
 
                continue
112
 
            rev = self.get_mapping().import_commit(o,
113
 
                self.lookup_foreign_revision_id)
114
 
            yield o.id, rev.revision_id
115
 
 
116
113
    def all_revision_ids(self):
117
 
        ret = set([])
118
 
        for git_sha, revid in self._iter_revision_ids():
119
 
            ret.add(revid)
 
114
        ret = set([revision.NULL_REVISION])
 
115
        heads = self._git.refs.as_dict('refs/heads')
 
116
        if heads == {}:
 
117
            return ret
 
118
        bzr_heads = [self.get_mapping().revision_id_foreign_to_bzr(h) for h in heads.itervalues()]
 
119
        ret = set(bzr_heads)
 
120
        graph = self.get_graph()
 
121
        for rev, parents in graph.iter_ancestry(bzr_heads):
 
122
            ret.add(rev)
120
123
        return ret
121
124
 
 
125
    def _make_parents_provider(self):
 
126
        """See Repository._make_parents_provider()."""
 
127
        return self._parents_provider
 
128
 
122
129
    def get_parent_map(self, revids):
123
130
        parent_map = {}
124
131
        for revision_id in revids:
126
133
            if revision_id == revision.NULL_REVISION:
127
134
                parent_map[revision_id] = ()
128
135
                continue
129
 
            hexsha, mapping = self.lookup_bzr_revision_id(revision_id)
130
 
            try:
131
 
                commit = self._git[hexsha]
132
 
            except KeyError:
 
136
            hexsha, mapping = self.lookup_git_revid(revision_id)
 
137
            commit  = self._git.commit(hexsha)
 
138
            if commit is None:
133
139
                continue
134
 
            parent_map[revision_id] = [self.lookup_foreign_revision_id(p, mapping) for p in commit.parents]
 
140
            else:
 
141
                parent_map[revision_id] = [mapping.revision_id_foreign_to_bzr(p) for p in commit.parents]
135
142
        return parent_map
136
143
 
137
144
    def get_ancestry(self, revision_id, topo_sorted=True):
150
157
    def get_signature_text(self, revision_id):
151
158
        raise errors.NoSuchRevision(self, revision_id)
152
159
 
153
 
    def pack(self, hint=None, clean_obsolete_packs=False):
154
 
        self._git.object_store.pack_loose_objects()
155
 
 
156
 
    def lookup_foreign_revision_id(self, foreign_revid, mapping=None):
 
160
    def lookup_revision_id(self, revid):
157
161
        """Lookup a revision id.
158
 
 
 
162
        
 
163
        :param revid: Bazaar revision id.
 
164
        :return: Tuple with git revisionid and mapping.
159
165
        """
160
 
        if mapping is None:
161
 
            mapping = self.get_mapping()
162
 
        from dulwich.protocol import (
163
 
            ZERO_SHA,
164
 
            )
165
 
        if foreign_revid == ZERO_SHA:
166
 
            return revision.NULL_REVISION
167
 
        commit = self._git[foreign_revid]
168
 
        rev = mapping.import_commit(commit, lambda x: None)
169
 
        return rev.revision_id
 
166
        # Yes, this doesn't really work, but good enough as a stub
 
167
        return osutils.sha(revid).hexdigest(), self.get_mapping()
170
168
 
171
169
    def has_signature_for_revision_id(self, revision_id):
172
170
        return False
173
171
 
174
 
    def lookup_bzr_revision_id(self, bzr_revid, mapping=None):
 
172
    def lookup_git_revid(self, bzr_revid):
175
173
        try:
176
174
            return mapping_registry.revision_id_bzr_to_foreign(bzr_revid)
177
175
        except errors.InvalidRevisionId:
178
 
            if mapping is None:
179
 
                mapping = self.get_mapping()
180
 
            try:
181
 
                return self._git.refs[mapping.revid_as_refname(bzr_revid)], mapping
182
 
            except KeyError:
183
 
                # Update refs from Git commit objects
184
 
                # FIXME: Hitting this a lot will be very inefficient...
185
 
                for git_sha, revid in self._iter_revision_ids():
186
 
                    self._git.refs[mapping.revid_as_refname(revid)] = git_sha
187
 
                    if revid == bzr_revid:
188
 
                        return git_sha, mapping
189
 
                raise errors.NoSuchRevision(self, bzr_revid)
 
176
            raise errors.NoSuchRevision(self, bzr_revid)
190
177
 
191
178
    def get_revision(self, revision_id):
192
 
        git_commit_id, mapping = self.lookup_bzr_revision_id(revision_id)
 
179
        git_commit_id, mapping = self.lookup_git_revid(revision_id)
193
180
        try:
194
 
            commit = self._git[git_commit_id]
 
181
            commit = self._git.commit(git_commit_id)
195
182
        except KeyError:
196
183
            raise errors.NoSuchRevision(self, revision_id)
197
184
        # print "fetched revision:", git_commit_id
198
 
        revision = mapping.import_commit(commit,
199
 
            self.lookup_foreign_revision_id)
 
185
        revision = mapping.import_commit(commit)
200
186
        assert revision is not None
201
187
        return revision
202
188
 
203
189
    def has_revision(self, revision_id):
204
190
        try:
205
 
            git_commit_id, mapping = self.lookup_bzr_revision_id(revision_id)
 
191
            self.get_revision(revision_id)
206
192
        except errors.NoSuchRevision:
207
193
            return False
208
 
        return (git_commit_id in self._git)
209
 
 
210
 
    def has_revisions(self, revision_ids):
211
 
        return set(filter(self.has_revision, revision_ids))
 
194
        else:
 
195
            return True
212
196
 
213
197
    def get_revisions(self, revids):
214
198
        return [self.get_revision(r) for r in revids]
236
220
        progress=None):
237
221
        return self._git.fetch_objects(determine_wants, graph_walker, progress)
238
222
 
239
 
    def _get_versioned_file_checker(self, text_key_references=None,
240
 
                        ancestors=None):
241
 
        return GitVersionedFileChecker(self,
242
 
            text_key_references=text_key_references, ancestors=ancestors)
243
 
    
244
 
 
245
 
class GitVersionedFileChecker(repository._VersionedFileChecker):
246
 
 
247
 
    file_ids = []
248
 
 
249
 
    def _check_file_version_parents(self, texts, progress_bar):
250
 
        return {}, []
 
223
 
 
224
class GitRevisionTree(revisiontree.RevisionTree):
 
225
 
 
226
    def __init__(self, repository, revision_id):
 
227
        self._revision_id = revision_id
 
228
        self._repository = repository
 
229
        store = repository._git.object_store
 
230
        assert isinstance(revision_id, str)
 
231
        git_id, self.mapping = repository.lookup_git_revid(revision_id)
 
232
        try:
 
233
            commit = store[git_id]
 
234
        except KeyError, r:
 
235
            raise errors.NoSuchRevision(repository, revision_id)
 
236
        self.tree = commit.tree
 
237
        self._inventory = GitInventory(self.tree, self.mapping, store, 
 
238
                                       revision_id)
 
239
 
 
240
    def get_revision_id(self):
 
241
        return self._revision_id
 
242
 
 
243
    def get_file_text(self, file_id, path=None):
 
244
        if path is not None:
 
245
            entry = self._inventory._get_ie(path)
 
246
        else:
 
247
            entry = self._inventory[file_id]
 
248
        if entry.kind == 'directory': return ""
 
249
        return entry.object.data
251
250
 
252
251
 
253
252
class GitRepositoryFormat(repository.RepositoryFormat):
265
264
    def check_conversion_target(self, target_repo_format):
266
265
        return target_repo_format.rich_root_data
267
266
 
268
 
    def get_foreign_tests_repository_factory(self):
269
 
        from bzrlib.plugins.git.tests.test_repository import (
270
 
            ForeignTestsRepositoryFactory,
271
 
            )
272
 
        return ForeignTestsRepositoryFactory()
273
 
 
274
267
    def network_name(self):
275
268
        return "git"