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remote.py
1
 
# Copyright (C) 2007-2010 Jelmer Vernooij <jelmer@samba.org>
 
1
# Copyright (C) 2007-2008 Canonical Ltd
2
2
#
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
14
14
# along with this program; if not, write to the Free Software
15
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16
16
 
17
 
from bzrlib import (
18
 
    config,
19
 
    debug,
20
 
    tag,
21
 
    trace,
22
 
    ui,
23
 
    urlutils,
24
 
    )
25
 
from bzrlib.errors import (
26
 
    BzrError,
27
 
    InvalidRevisionId,
28
 
    NoSuchFile,
29
 
    NoSuchRevision,
30
 
    NotLocalUrl,
31
 
    )
32
 
from bzrlib.transport import (
33
 
    Transport,
34
 
    )
 
17
import bzrlib
 
18
from bzrlib import urlutils
 
19
from bzrlib.bzrdir import BzrDir, BzrDirFormat
 
20
from bzrlib.errors import NoSuchFile, NotLocalUrl
 
21
from bzrlib.lockable_files import TransportLock
 
22
from bzrlib.repository import Repository
 
23
from bzrlib.trace import info
 
24
from bzrlib.transport import Transport
35
25
 
36
 
from bzrlib.plugins.git import (
37
 
    lazy_check_versions,
38
 
    )
 
26
from bzrlib.plugins.git import lazy_check_versions
39
27
lazy_check_versions()
40
28
 
41
 
from bzrlib.plugins.git.branch import (
42
 
    GitBranch,
43
 
    )
44
 
from bzrlib.plugins.git.errors import (
45
 
    GitSmartRemoteNotSupported,
46
 
    NoSuchRef,
47
 
    )
48
 
from bzrlib.plugins.git.dir import (
49
 
    GitDir,
50
 
    )
51
 
from bzrlib.plugins.git.mapping import (
52
 
    mapping_registry,
53
 
    )
54
 
from bzrlib.plugins.git.repository import (
55
 
    GitRepository,
56
 
    )
57
 
from bzrlib.plugins.git.refs import (
58
 
    extract_tags,
59
 
    branch_name_to_ref,
60
 
    )
 
29
from bzrlib.plugins.git.branch import GitBranch
 
30
from bzrlib.plugins.git.errors import NoSuchRef
 
31
from bzrlib.plugins.git.dir import GitDir
 
32
from bzrlib.plugins.git.foreign import ForeignBranch
 
33
from bzrlib.plugins.git.repository import GitFormat, GitRepository
61
34
 
62
 
import dulwich as git
63
 
from dulwich.errors import (
64
 
    GitProtocolError,
65
 
    )
66
 
from dulwich.pack import (
67
 
    Pack,
68
 
    ThinPackData,
69
 
    )
70
35
import os
71
36
import tempfile
72
37
import urllib
73
38
import urlparse
74
 
urlparse.uses_netloc.extend(['git', 'git+ssh'])
75
 
 
76
 
from dulwich.pack import load_pack_index
77
 
 
78
 
 
79
 
# Don't run any tests on GitSmartTransport as it is not intended to be
 
39
 
 
40
import dulwich as git
 
41
from dulwich.pack import PackData, Pack, PackIndex
 
42
 
 
43
# Don't run any tests on GitSmartTransport as it is not intended to be 
80
44
# a full implementation of Transport
81
45
def get_test_permutations():
82
46
    return []
83
47
 
84
48
 
85
 
def split_git_url(url):
86
 
    """Split a Git URL.
87
 
 
88
 
    :param url: Git URL
89
 
    :return: Tuple with host, port, username, path.
90
 
    """
91
 
    (scheme, netloc, loc, _, _) = urlparse.urlsplit(url)
92
 
    path = urllib.unquote(loc)
93
 
    if path.startswith("/~"):
94
 
        path = path[1:]
95
 
    (username, hostport) = urllib.splituser(netloc)
96
 
    (host, port) = urllib.splitnport(hostport, None)
97
 
    return (host, port, username, path)
98
 
 
99
 
 
100
49
class GitSmartTransport(Transport):
101
50
 
102
51
    def __init__(self, url, _client=None):
103
52
        Transport.__init__(self, url)
104
 
        (self._host, self._port, self._username, self._path) = \
105
 
            split_git_url(url)
106
 
        if 'transport' in debug.debug_flags:
107
 
            trace.mutter('host: %r, user: %r, port: %r, path: %r',
108
 
                         self._host, self._username, self._port, self._path)
 
53
        (scheme, _, loc, _, _) = urlparse.urlsplit(url)
 
54
        assert scheme == "git"
 
55
        hostport, self._path = urllib.splithost(loc)
 
56
        (self._host, self._port) = urllib.splitnport(hostport, git.protocol.TCP_GIT_PORT)
109
57
        self._client = _client
110
58
 
111
 
    def external_url(self):
112
 
        return self.base
113
 
 
114
 
    def has(self, relpath):
115
 
        return False
116
 
 
117
 
    def _get_client(self, thin_packs):
118
 
        raise NotImplementedError(self._get_client)
119
 
 
120
 
    def _get_path(self):
121
 
        return self._path
 
59
    def _get_client(self):
 
60
        if self._client is not None:
 
61
            ret = self._client
 
62
            self._client = None
 
63
            return ret
 
64
        return git.client.TCPGitClient(self._host, self._port)
122
65
 
123
66
    def fetch_pack(self, determine_wants, graph_walker, pack_data, progress=None):
124
67
        if progress is None:
125
68
            def progress(text):
126
 
                trace.info("git: %s" % text)
127
 
        client = self._get_client(thin_packs=False)
128
 
        try:
129
 
            return client.fetch_pack(self._get_path(), determine_wants,
130
 
                graph_walker, pack_data, progress)
131
 
        except GitProtocolError, e:
132
 
            raise BzrError(e)
133
 
 
134
 
    def send_pack(self, get_changed_refs, generate_pack_contents):
135
 
        client = self._get_client(thin_packs=False)
136
 
        try:
137
 
            return client.send_pack(self._get_path(), get_changed_refs,
138
 
                generate_pack_contents)
139
 
        except GitProtocolError, e:
140
 
            raise BzrError(e)
 
69
                info("git: %s" % text)
 
70
        self._get_client().fetch_pack(self._path, determine_wants, 
 
71
            graph_walker, pack_data, progress)
141
72
 
142
73
    def get(self, path):
143
74
        raise NoSuchFile(path)
152
83
        else:
153
84
            newurl = urlutils.join(self.base, offset)
154
85
 
155
 
        return self.__class__(newurl, self._client)
156
 
 
157
 
 
158
 
class TCPGitSmartTransport(GitSmartTransport):
159
 
 
160
 
    _scheme = 'git'
161
 
 
162
 
    def _get_client(self, thin_packs):
163
 
        if self._client is not None:
164
 
            ret = self._client
165
 
            self._client = None
166
 
            return ret
167
 
        return git.client.TCPGitClient(self._host, self._port,
168
 
            thin_packs=thin_packs, report_activity=self._report_activity)
169
 
 
170
 
 
171
 
class SSHGitSmartTransport(GitSmartTransport):
172
 
 
173
 
    _scheme = 'git+ssh'
174
 
 
175
 
    def _get_path(self):
176
 
        if self._path.startswith("/~/"):
177
 
            return self._path[3:]
178
 
        return self._path
179
 
 
180
 
    def _get_client(self, thin_packs):
181
 
        if self._client is not None:
182
 
            ret = self._client
183
 
            self._client = None
184
 
            return ret
185
 
        location_config = config.LocationConfig(self.base)
186
 
        client = git.client.SSHGitClient(self._host, self._port, self._username,
187
 
            thin_packs=thin_packs, report_activity=self._report_activity)
188
 
        # Set up alternate pack program paths
189
 
        upload_pack = location_config.get_user_option('git_upload_pack')
190
 
        if upload_pack:
191
 
            client.alternative_paths["upload-pack"] = upload_pack
192
 
        receive_pack = location_config.get_user_option('git_receive_pack')
193
 
        if receive_pack:
194
 
            client.alternative_paths["receive-pack"] = receive_pack
195
 
        return client
 
86
        return GitSmartTransport(newurl, self._client)
196
87
 
197
88
 
198
89
class RemoteGitDir(GitDir):
202
93
        self.root_transport = transport
203
94
        self.transport = transport
204
95
        self._lockfiles = lockfiles
205
 
        self._mode_check_done = None
206
 
 
207
 
    def _branch_name_to_ref(self, name, default=None):
208
 
        return branch_name_to_ref(name, default=default)
209
96
 
210
97
    def open_repository(self):
211
98
        return RemoteGitRepository(self, self._lockfiles)
212
99
 
213
 
    def _open_branch(self, name=None, ignore_fallbacks=False, 
214
 
                    unsupported=False):
 
100
    def open_branch(self, _unsupported=False):
215
101
        repo = self.open_repository()
216
 
        refname = self._branch_name_to_ref(name)
217
 
        return RemoteGitBranch(self, repo, refname, self._lockfiles)
 
102
        # TODO: Support for multiple branches in one bzrdir in bzrlib!
 
103
        return RemoteGitBranch(self, repo, "HEAD", self._lockfiles)
218
104
 
219
 
    def open_workingtree(self, recommend_upgrade=False):
 
105
    def open_workingtree(self):
220
106
        raise NotLocalUrl(self.transport.base)
221
107
 
222
108
 
223
 
class EmptyObjectStoreIterator(dict):
224
 
 
225
 
    def iterobjects(self):
226
 
        return []
227
 
 
228
 
 
229
109
class TemporaryPackIterator(Pack):
230
110
 
231
 
    def __init__(self, path, resolve_ext_ref):
232
 
        super(TemporaryPackIterator, self).__init__(path)
233
 
        self.resolve_ext_ref = resolve_ext_ref
234
 
 
235
 
    @property
236
 
    def data(self):
237
 
        if self._data is None:
238
 
            self._data = ThinPackData(self.resolve_ext_ref, self._data_path)
239
 
        return self._data
240
 
 
241
 
    @property
242
 
    def index(self):
 
111
    @property
 
112
    def idx(self):
243
113
        if self._idx is None:
244
 
            if not os.path.exists(self._idx_path):
245
 
                pb = ui.ui_factory.nested_progress_bar()
246
 
                try:
247
 
                    def report_progress(cur, total):
248
 
                        pb.update("generating index", cur, total)
249
 
                    self.data.create_index(self._idx_path, 
250
 
                        progress=report_progress)
251
 
                finally:
252
 
                    pb.finished()
253
 
            self._idx = load_pack_index(self._idx_path)
 
114
            self._data.create_index_v2(self._idx_path)
 
115
            self._idx = PackIndex(self._idx_path)
254
116
        return self._idx
255
117
 
256
118
    def __del__(self):
257
 
        if self._idx is not None:
258
 
            self._idx.close()
259
 
            os.remove(self._idx_path)
260
 
        if self._data is not None:
261
 
            self._data.close()
262
 
            os.remove(self._data_path)
 
119
        os.remove(self._data_path)
 
120
        os.remove(self._idx_path)
263
121
 
264
122
 
265
123
class RemoteGitRepository(GitRepository):
266
124
 
267
125
    def __init__(self, gitdir, lockfiles):
268
126
        GitRepository.__init__(self, gitdir, lockfiles)
269
 
        self._refs = None
270
 
 
271
 
    @property
272
 
    def inventories(self):
273
 
        raise GitSmartRemoteNotSupported()
274
 
 
275
 
    @property
276
 
    def revisions(self):
277
 
        raise GitSmartRemoteNotSupported()
278
 
 
279
 
    @property
280
 
    def texts(self):
281
 
        raise GitSmartRemoteNotSupported()
282
 
 
283
 
    def get_refs(self):
284
 
        if self._refs is not None:
285
 
            return self._refs
286
 
        self._refs = self.bzrdir.root_transport.fetch_pack(lambda x: [], None,
287
 
            lambda x: None, lambda x: trace.mutter("git: %s" % x))
288
 
        return self._refs
289
 
 
290
 
    def fetch_pack(self, determine_wants, graph_walker, pack_data,
 
127
 
 
128
    def fetch_pack(self, determine_wants, graph_walker, pack_data, 
291
129
                   progress=None):
292
 
        return self._transport.fetch_pack(determine_wants, graph_walker,
293
 
                                          pack_data, progress)
294
 
 
295
 
    def send_pack(self, get_changed_refs, generate_pack_contents):
296
 
        return self._transport.send_pack(get_changed_refs, generate_pack_contents)
297
 
 
298
 
    def fetch_objects(self, determine_wants, graph_walker, resolve_ext_ref,
299
 
                      progress=None):
 
130
        self._transport.fetch_pack(determine_wants, graph_walker, pack_data, 
 
131
            progress)
 
132
 
 
133
    def fetch_objects(self, determine_wants, graph_walker, progress=None):
300
134
        fd, path = tempfile.mkstemp(suffix=".pack")
301
 
        self.fetch_pack(determine_wants, graph_walker,
302
 
            lambda x: os.write(fd, x), progress)
 
135
        self.fetch_pack(determine_wants, graph_walker, lambda x: os.write(fd, x), progress)
303
136
        os.close(fd)
304
 
        if os.path.getsize(path) == 0:
305
 
            return EmptyObjectStoreIterator()
306
 
        return TemporaryPackIterator(path[:-len(".pack")], resolve_ext_ref)
307
 
 
308
 
    def lookup_bzr_revision_id(self, bzr_revid):
309
 
        # This won't work for any round-tripped bzr revisions, but it's a start..
310
 
        try:
311
 
            return mapping_registry.revision_id_bzr_to_foreign(bzr_revid)
312
 
        except InvalidRevisionId:
313
 
            raise NoSuchRevision(self, bzr_revid)
314
 
 
315
 
    def lookup_foreign_revision_id(self, foreign_revid, mapping=None):
316
 
        """Lookup a revision id.
317
 
 
318
 
        """
319
 
        if mapping is None:
320
 
            mapping = self.get_mapping()
321
 
        # Not really an easy way to parse foreign revids here..
322
 
        return mapping.revision_id_foreign_to_bzr(foreign_revid)
323
 
 
324
 
 
325
 
class RemoteGitTagDict(tag.BasicTags):
326
 
 
327
 
    def __init__(self, branch):
328
 
        self.branch = branch
329
 
        self.repository = branch.repository
330
 
 
331
 
    def get_tag_dict(self):
332
 
        tags = {}
333
 
        for k, v in extract_tags(self.repository.get_refs()).iteritems():
334
 
            tags[k] = self.branch.mapping.revision_id_foreign_to_bzr(v)
335
 
        return tags
336
 
 
337
 
    def set_tag(self, name, revid):
338
 
        # FIXME: Not supported yet, should do a push of a new ref
339
 
        raise NotImplementedError(self.set_tag)
 
137
        return TemporaryPackIterator(path[:-len(".pack")])
340
138
 
341
139
 
342
140
class RemoteGitBranch(GitBranch):
343
141
 
344
142
    def __init__(self, bzrdir, repository, name, lockfiles):
345
 
        self._sha = None
346
 
        super(RemoteGitBranch, self).__init__(bzrdir, repository, name,
347
 
                lockfiles)
348
 
 
349
 
    def revision_history(self):
350
 
        raise GitSmartRemoteNotSupported()
 
143
        def determine_wants(heads):
 
144
            if not name in heads:
 
145
                raise NoSuchRef(name)
 
146
            self._ref = heads[name]
 
147
        bzrdir.root_transport.fetch_pack(determine_wants, None, lambda x: None, 
 
148
                             lambda x: mutter("git: %s" % x))
 
149
        super(RemoteGitBranch, self).__init__(bzrdir, repository, name, self._ref, lockfiles)
351
150
 
352
151
    def last_revision(self):
353
 
        return self.lookup_foreign_revision_id(self.head)
354
 
 
355
 
    def _get_config(self):
356
 
        class EmptyConfig(object):
357
 
 
358
 
            def _get_configobj(self):
359
 
                return config.ConfigObj()
360
 
 
361
 
        return EmptyConfig()
362
 
 
363
 
    @property
364
 
    def head(self):
365
 
        if self._sha is not None:
366
 
            return self._sha
367
 
        heads = self.repository.get_refs()
368
 
        name = self.bzrdir._branch_name_to_ref(self.name, "HEAD")
369
 
        if name in heads:
370
 
            self._sha = heads[name]
371
 
        else:
372
 
            raise NoSuchRef(self.name)
373
 
        return self._sha
 
152
        return self.mapping.revision_id_foreign_to_bzr(self._ref)
374
153
 
375
154
    def _synchronize_history(self, destination, revision_id):
376
155
        """See Branch._synchronize_history()."""
377
156
        destination.generate_revision_history(self.last_revision())
378
 
 
379
 
    def get_push_location(self):
380
 
        return None
381
 
 
382
 
    def set_push_location(self, url):
383
 
        pass
 
157