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remote.py
1
 
# Copyright (C) 2007-2008 Canonical Ltd
 
1
# Copyright (C) 2007-2010 Jelmer Vernooij <jelmer@samba.org>
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
 
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
25
 
 
26
 
from bzrlib.plugins.git.branch import GitBranch
27
 
from bzrlib.plugins.git.errors import NoSuchRef
28
 
from bzrlib.plugins.git.dir import GitDir
29
 
from bzrlib.plugins.git.foreign import ForeignBranch
30
 
from bzrlib.plugins.git.repository import GitFormat, GitRepository
31
 
 
 
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
    )
 
35
 
 
36
from bzrlib.plugins.git import (
 
37
    lazy_check_versions,
 
38
    )
 
39
lazy_check_versions()
 
40
 
 
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
    )
 
61
 
 
62
import dulwich as git
 
63
from dulwich.errors import (
 
64
    GitProtocolError,
 
65
    )
 
66
from dulwich.pack import (
 
67
    Pack,
 
68
    ThinPackData,
 
69
    )
32
70
import os
33
71
import tempfile
34
72
import urllib
35
73
import urlparse
36
 
 
37
 
import dulwich as git
38
 
from dulwich.pack import PackData, Pack
39
 
 
40
 
# Don't run any tests on GitSmartTransport as it is not intended to be 
 
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
41
80
# a full implementation of Transport
42
81
def get_test_permutations():
43
82
    return []
44
83
 
45
84
 
 
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
 
46
100
class GitSmartTransport(Transport):
47
101
 
48
102
    def __init__(self, url, _client=None):
49
103
        Transport.__init__(self, url)
50
 
        (scheme, _, loc, _, _) = urlparse.urlsplit(url)
51
 
        assert scheme == "git"
52
 
        hostport, self._path = urllib.splithost(loc)
53
 
        (self._host, self._port) = urllib.splitnport(hostport, git.protocol.TCP_GIT_PORT)
 
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)
54
109
        self._client = _client
55
110
 
56
 
    def _get_client(self):
57
 
        if self._client is not None:
58
 
            ret = self._client
59
 
            self._client = None
60
 
            return ret
61
 
        return git.client.TCPGitClient(self._host, self._port)
 
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
62
122
 
63
123
    def fetch_pack(self, determine_wants, graph_walker, pack_data, progress=None):
64
124
        if progress is None:
65
125
            def progress(text):
66
 
                info("git: %s" % text)
67
 
        self._get_client().fetch_pack(self._path, determine_wants, 
68
 
            graph_walker, pack_data, progress)
 
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
141
 
70
142
    def get(self, path):
71
143
        raise NoSuchFile(path)
80
152
        else:
81
153
            newurl = urlutils.join(self.base, offset)
82
154
 
83
 
        return GitSmartTransport(newurl, self._client)
 
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
84
196
 
85
197
 
86
198
class RemoteGitDir(GitDir):
90
202
        self.root_transport = transport
91
203
        self.transport = transport
92
204
        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)
93
209
 
94
210
    def open_repository(self):
95
211
        return RemoteGitRepository(self, self._lockfiles)
96
212
 
97
 
    def open_branch(self, _unsupported=False):
 
213
    def _open_branch(self, name=None, ignore_fallbacks=False, 
 
214
                    unsupported=False):
98
215
        repo = self.open_repository()
99
 
        # TODO: Support for multiple branches in one bzrdir in bzrlib!
100
 
        return RemoteGitBranch(self, repo, "HEAD", self._lockfiles)
 
216
        refname = self._branch_name_to_ref(name)
 
217
        return RemoteGitBranch(self, repo, refname, self._lockfiles)
101
218
 
102
 
    def open_workingtree(self):
 
219
    def open_workingtree(self, recommend_upgrade=False):
103
220
        raise NotLocalUrl(self.transport.base)
104
221
 
105
222
 
 
223
class EmptyObjectStoreIterator(dict):
 
224
 
 
225
    def iterobjects(self):
 
226
        return []
 
227
 
 
228
 
 
229
class TemporaryPackIterator(Pack):
 
230
 
 
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):
 
243
        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)
 
254
        return self._idx
 
255
 
 
256
    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)
 
263
 
 
264
 
106
265
class RemoteGitRepository(GitRepository):
107
266
 
108
267
    def __init__(self, gitdir, lockfiles):
109
268
        GitRepository.__init__(self, gitdir, lockfiles)
110
 
 
111
 
    def fetch_pack(self, determine_wants, graph_walker, pack_data, 
 
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,
112
291
                   progress=None):
113
 
        self._transport.fetch_pack(determine_wants, graph_walker, pack_data, 
114
 
            progress)
115
 
 
116
 
    def fetch_objects(self, determine_wants, graph_walker, 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):
117
300
        fd, path = tempfile.mkstemp(suffix=".pack")
118
 
        self.fetch_pack(determine_wants, graph_walker, lambda x: os.write(fd, x), progress)
 
301
        self.fetch_pack(determine_wants, graph_walker,
 
302
            lambda x: os.write(fd, x), progress)
119
303
        os.close(fd)
120
 
        basename = path[:-len(".pack")]
121
 
        p = PackData(path)
122
 
        p.create_index_v2(basename+".idx")
123
 
        pack = Pack(basename)
124
 
        os.remove(path)
125
 
        return (len(p), pack.iterobjects())
 
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)
126
340
 
127
341
 
128
342
class RemoteGitBranch(GitBranch):
129
343
 
130
344
    def __init__(self, bzrdir, repository, name, lockfiles):
131
 
        def determine_wants(heads):
132
 
            if not name in heads:
133
 
                raise NoSuchRef(name)
134
 
            self._ref = heads[name]
135
 
        bzrdir.root_transport.fetch_pack(determine_wants, None, lambda x: None, 
136
 
                             lambda x: mutter("git: %s" % x))
137
 
        super(RemoteGitBranch, self).__init__(bzrdir, repository, name, self._ref, lockfiles)
 
345
        self._sha = None
 
346
        super(RemoteGitBranch, self).__init__(bzrdir, repository, name,
 
347
                lockfiles)
 
348
 
 
349
    def revision_history(self):
 
350
        raise GitSmartRemoteNotSupported()
138
351
 
139
352
    def last_revision(self):
140
 
        return self.mapping.revision_id_foreign_to_bzr(self._ref)
 
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
141
374
 
142
375
    def _synchronize_history(self, destination, revision_id):
143
376
        """See Branch._synchronize_history()."""
144
377
        destination.generate_revision_history(self.last_revision())
145
 
 
 
378
 
 
379
    def get_push_location(self):
 
380
        return None
 
381
 
 
382
    def set_push_location(self, url):
 
383
        pass