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  • Committer: Jelmer Vernooij
  • Date: 2020-09-02 16:35:18 UTC
  • mto: (7490.40.109 work)
  • mto: This revision was merged to the branch mainline in revision 7526.
  • Revision ID: jelmer@jelmer.uk-20200902163518-sy9f4unbboljphgu
Handle duplicate directories entries for git.

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Lines of Context:
breezy/plugins/github/hoster.py
 
1
# Copyright (C) 2018 Breezy Developers
 
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
 
6
# (at your option) any later version.
 
7
#
 
8
# This program is distributed in the hope that it will be useful,
 
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
10
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
16
 
 
17
"""Support for GitHub."""
 
18
 
 
19
from __future__ import absolute_import
 
20
 
 
21
import json
 
22
import os
 
23
 
 
24
from ...propose import (
 
25
    determine_title,
 
26
    Hoster,
 
27
    HosterLoginRequired,
 
28
    MergeProposal,
 
29
    MergeProposalBuilder,
 
30
    MergeProposalExists,
 
31
    NoSuchProject,
 
32
    PrerequisiteBranchUnsupported,
 
33
    ReopenFailed,
 
34
    UnsupportedHoster,
 
35
    )
 
36
 
 
37
from ... import (
 
38
    bedding,
 
39
    branch as _mod_branch,
 
40
    controldir,
 
41
    errors,
 
42
    hooks,
 
43
    urlutils,
 
44
    version_string as breezy_version,
 
45
    )
 
46
from ...config import AuthenticationConfig, GlobalStack
 
47
from ...errors import (
 
48
    InvalidHttpResponse,
 
49
    PermissionDenied,
 
50
    UnexpectedHttpStatus,
 
51
    )
 
52
from ...git.urls import git_url_to_bzr_url
 
53
from ...i18n import gettext
 
54
from ...sixish import PY3
 
55
from ...trace import note
 
56
from ...transport import get_transport
 
57
from ...transport.http import default_user_agent
 
58
 
 
59
 
 
60
GITHUB_HOST = 'github.com'
 
61
WEB_GITHUB_URL = 'https://github.com'
 
62
API_GITHUB_URL = 'https://api.github.com'
 
63
DEFAULT_PER_PAGE = 50
 
64
 
 
65
 
 
66
def store_github_token(scheme, host, token):
 
67
    with open(os.path.join(bedding.config_dir(), 'github.conf'), 'w') as f:
 
68
        f.write(token)
 
69
 
 
70
 
 
71
def retrieve_github_token(scheme, host):
 
72
    path = os.path.join(bedding.config_dir(), 'github.conf')
 
73
    if not os.path.exists(path):
 
74
        return None
 
75
    with open(path, 'r') as f:
 
76
        return f.read().strip()
 
77
 
 
78
 
 
79
class ValidationFailed(errors.BzrError):
 
80
 
 
81
    _fmt = "GitHub validation failed: %(error)s"
 
82
 
 
83
    def __init__(self, error):
 
84
        errors.BzrError.__init__(self)
 
85
        self.error = error
 
86
 
 
87
 
 
88
class NotGitHubUrl(errors.BzrError):
 
89
 
 
90
    _fmt = "Not a GitHub URL: %(url)s"
 
91
 
 
92
    def __init__(self, url):
 
93
        errors.BzrError.__init__(self)
 
94
        self.url = url
 
95
 
 
96
 
 
97
class GitHubLoginRequired(HosterLoginRequired):
 
98
 
 
99
    _fmt = "Action requires GitHub login."
 
100
 
 
101
 
 
102
def connect_github():
 
103
    """Connect to GitHub.
 
104
    """
 
105
    user_agent = default_user_agent()
 
106
    auth = AuthenticationConfig()
 
107
 
 
108
    credentials = auth.get_credentials('https', GITHUB_HOST)
 
109
    if credentials is not None:
 
110
        return Github(credentials['user'], credentials['password'],
 
111
                      user_agent=user_agent)
 
112
 
 
113
    # TODO(jelmer): token = auth.get_token('https', GITHUB_HOST)
 
114
    if token is not None:
 
115
        return Github(token, user_agent=user_agent)
 
116
    else:
 
117
        note('Accessing GitHub anonymously. To log in, run \'brz gh-login\'.')
 
118
        return Github(user_agent=user_agent)
 
119
 
 
120
 
 
121
class GitHubMergeProposal(MergeProposal):
 
122
 
 
123
    def __init__(self, gh, pr):
 
124
        self._gh = gh
 
125
        self._pr = pr
 
126
 
 
127
    def __repr__(self):
 
128
        return "<%s at %r>" % (type(self).__name__, self.url)
 
129
 
 
130
    name = 'GitHub'
 
131
 
 
132
    @property
 
133
    def url(self):
 
134
        return self._pr['html_url']
 
135
 
 
136
    def _branch_from_part(self, part):
 
137
        if part['repo'] is None:
 
138
            return None
 
139
        return github_url_to_bzr_url(part['repo']['html_url'], part['ref'])
 
140
 
 
141
    def get_source_branch_url(self):
 
142
        return self._branch_from_part(self._pr['head'])
 
143
 
 
144
    def get_source_revision(self):
 
145
        """Return the latest revision for the source branch."""
 
146
        from breezy.git.mapping import default_mapping
 
147
        return default_mapping.revision_id_foreign_to_bzr(
 
148
            self._pr['head']['sha'].encode('ascii'))
 
149
 
 
150
    def get_target_branch_url(self):
 
151
        return self._branch_from_part(self._pr['base'])
 
152
 
 
153
    def get_source_project(self):
 
154
        return self._pr['head']['repo']['full_name']
 
155
 
 
156
    def get_target_project(self):
 
157
        return self._pr['base']['repo']['full_name']
 
158
 
 
159
    def get_description(self):
 
160
        return self._pr['body']
 
161
 
 
162
    def get_commit_message(self):
 
163
        return None
 
164
 
 
165
    def set_commit_message(self, message):
 
166
        raise errors.UnsupportedOperation(self.set_commit_message, self)
 
167
 
 
168
    def _patch(self, data):
 
169
        response = self._gh._api_request(
 
170
            'PATCH', self._pr['url'], body=json.dumps(data).encode('utf-8'))
 
171
        if response.status == 422:
 
172
            raise ValidationFailed(json.loads(response.text))
 
173
        if response.status != 200:
 
174
            raise UnexpectedHttpStatus(self._pr['url'], response.status)
 
175
        self._pr = json.loads(response.text)
 
176
 
 
177
    def set_description(self, description):
 
178
        self._patch({
 
179
            'body': description,
 
180
            'title': determine_title(description),
 
181
            })
 
182
 
 
183
    def is_merged(self):
 
184
        return bool(self._pr.get('merged_at'))
 
185
 
 
186
    def is_closed(self):
 
187
        return self._pr['state'] == 'closed' and not bool(self._pr.get('merged_at'))
 
188
 
 
189
    def reopen(self):
 
190
        try:
 
191
            self._patch({'state': 'open'})
 
192
        except ValidationFailed as e:
 
193
            raise ReopenFailed(e.error['errors'][0]['message'])
 
194
 
 
195
    def close(self):
 
196
        self._patch({'state': 'closed'})
 
197
 
 
198
    def can_be_merged(self):
 
199
        return self._pr['mergeable']
 
200
 
 
201
    def merge(self, commit_message=None):
 
202
        # https://developer.github.com/v3/pulls/#merge-a-pull-request-merge-button
 
203
        data = {}
 
204
        if commit_message:
 
205
            data['commit_message'] = commit_messae
 
206
        response = self._gh._api_request(
 
207
            'PUT', self._pr['url'] + "/merge", body=json.dumps(data).encode('utf-8'))
 
208
        if response.status == 422:
 
209
            raise ValidationFailed(json.loads(response.text))
 
210
        if response.status != 200:
 
211
            raise UnexpectedHttpStatus(self._pr['url'], response.status)
 
212
 
 
213
    def get_merged_by(self):
 
214
        merged_by = self._pr.get('merged_by')
 
215
        if merged_by is None:
 
216
            return None
 
217
        return merged_by['login']
 
218
 
 
219
    def get_merged_at(self):
 
220
        merged_at = self._pr.get('merged_at')
 
221
        if merged_at is None:
 
222
            return None
 
223
        import iso8601
 
224
        return iso8601.parse_date(merged_at)
 
225
 
 
226
    def post_comment(self, body):
 
227
        data = {'body': body}
 
228
        response = self._gh._api_request(
 
229
            'POST', self._pr['comments_url'], body=json.dumps(data).encode('utf-8'))
 
230
        if response.status == 422:
 
231
            raise ValidationFailed(json.loads(response.text))
 
232
        if response.status != 201:
 
233
            raise UnexpectedHttpStatus(
 
234
                self._pr['comments_url'], response.status)
 
235
        json.loads(response.text)
 
236
 
 
237
 
 
238
def parse_github_url(url):
 
239
    (scheme, user, password, host, port, path) = urlutils.parse_url(
 
240
        url)
 
241
    if host != GITHUB_HOST:
 
242
        raise NotGitHubUrl(url)
 
243
    (owner, repo_name) = path.strip('/').split('/')
 
244
    if repo_name.endswith('.git'):
 
245
        repo_name = repo_name[:-4]
 
246
    return owner, repo_name
 
247
 
 
248
 
 
249
def parse_github_branch_url(branch):
 
250
    url = urlutils.strip_segment_parameters(branch.user_url)
 
251
    owner, repo_name = parse_github_url(url)
 
252
    return owner, repo_name, branch.name
 
253
 
 
254
 
 
255
def github_url_to_bzr_url(url, branch_name):
 
256
    if not PY3:
 
257
        branch_name = branch_name.encode('utf-8')
 
258
    return git_url_to_bzr_url(url, branch_name)
 
259
 
 
260
 
 
261
def strip_optional(url):
 
262
    return url.split('{')[0]
 
263
 
 
264
 
 
265
class GitHub(Hoster):
 
266
 
 
267
    name = 'github'
 
268
 
 
269
    supports_merge_proposal_labels = True
 
270
    supports_merge_proposal_commit_message = False
 
271
    supports_allow_collaboration = True
 
272
    merge_proposal_description_format = 'markdown'
 
273
 
 
274
    def __repr__(self):
 
275
        return "GitHub()"
 
276
 
 
277
    def _api_request(self, method, path, body=None):
 
278
        headers = {
 
279
            'Content-Type': 'application/json',
 
280
            'Accept': 'application/vnd.github.v3+json'}
 
281
        if self._token:
 
282
            headers['Authorization'] = 'token %s' % self._token
 
283
        try:
 
284
            response = self.transport.request(
 
285
                method, urlutils.join(self.transport.base, path),
 
286
                headers=headers, body=body, retries=3)
 
287
        except UnexpectedHttpStatus as e:
 
288
            if e.code == 401:
 
289
                raise GitHubLoginRequired(self)
 
290
            else:
 
291
                raise
 
292
        if response.status == 401:
 
293
            raise GitHubLoginRequired(self)
 
294
        return response
 
295
 
 
296
    def _get_repo(self, owner, repo):
 
297
        path = 'repos/%s/%s' % (owner, repo)
 
298
        response = self._api_request('GET', path)
 
299
        if response.status == 404:
 
300
            raise NoSuchProject(path)
 
301
        if response.status == 200:
 
302
            return json.loads(response.text)
 
303
        raise UnexpectedHttpStatus(path, response.status)
 
304
 
 
305
    def _get_repo_pulls(self, path, head=None, state=None):
 
306
        path = path + '?'
 
307
        params = {}
 
308
        if head is not None:
 
309
            params['head'] = head
 
310
        if state is not None:
 
311
            params['state'] = state
 
312
        path += ';'.join(['%s=%s' % (k, urlutils.quote(v))
 
313
                         for k, v in params.items()])
 
314
        response = self._api_request('GET', path)
 
315
        if response.status == 404:
 
316
            raise NoSuchProject(path)
 
317
        if response.status == 200:
 
318
            return json.loads(response.text)
 
319
        raise UnexpectedHttpStatus(path, response.status)
 
320
 
 
321
    def _create_pull(self, path, title, head, base, body=None, labels=None,
 
322
                     assignee=None, draft=False, maintainer_can_modify=False):
 
323
        data = {
 
324
            'title': title,
 
325
            'head': head,
 
326
            'base': base,
 
327
            'draft': draft,
 
328
            'maintainer_can_modify': maintainer_can_modify,
 
329
        }
 
330
        if labels is not None:
 
331
            data['labels'] = labels
 
332
        if assignee is not None:
 
333
            data['assignee'] = assignee
 
334
        if body:
 
335
            data['body'] = body
 
336
 
 
337
        response = self._api_request(
 
338
            'POST', path, body=json.dumps(data).encode('utf-8'))
 
339
        if response.status == 403:
 
340
            raise PermissionDenied(path, response.text)
 
341
        if response.status != 201:
 
342
            raise UnexpectedHttpStatus(path, response.status)
 
343
        return json.loads(response.text)
 
344
 
 
345
    def _get_user_by_email(self, email):
 
346
        path = 'search/users?q=%s+in:email' % email
 
347
        response = self._api_request('GET', path)
 
348
        if response.status != 200:
 
349
            raise UnexpectedHttpStatus(path, response.status)
 
350
        ret = json.loads(response.text)
 
351
        if ret['total_count'] == 0:
 
352
            raise KeyError('no user with email %s' % email)
 
353
        elif ret['total_count'] > 1:
 
354
            raise ValueError('more than one result for email %s' % email)
 
355
        return ret['items'][0]
 
356
 
 
357
    def _get_user(self, username=None):
 
358
        if username:
 
359
            path = 'users/%s' % username
 
360
        else:
 
361
            path = 'user'
 
362
        response = self._api_request('GET', path)
 
363
        if response.status != 200:
 
364
            raise UnexpectedHttpStatus(path, response.status)
 
365
        return json.loads(response.text)
 
366
 
 
367
    def _get_organization(self, name):
 
368
        path = 'orgs/%s' % name
 
369
        response = self._api_request('GET', path)
 
370
        if response.status != 200:
 
371
            raise UnexpectedHttpStatus(path, response.status)
 
372
        return json.loads(response.text)
 
373
 
 
374
    def _list_paged(self, path, parameters=None, per_page=None):
 
375
        if parameters is None:
 
376
            parameters = {}
 
377
        else:
 
378
            parameters = dict(parameters.items())
 
379
        if per_page:
 
380
            parameters['per_page'] = str(per_page)
 
381
        page = 1
 
382
        i = 0
 
383
        while path:
 
384
            parameters['page'] = str(page)
 
385
            response = self._api_request(
 
386
                'GET', path + '?' +
 
387
                ';'.join(['%s=%s' % (k, urlutils.quote(v))
 
388
                          for (k, v) in parameters.items()]))
 
389
            if response.status != 200:
 
390
                raise UnexpectedHttpStatus(path, response.status)
 
391
            data = json.loads(response.text)
 
392
            for entry in data['items']:
 
393
                i += 1
 
394
                yield entry
 
395
            if i >= data['total_count']:
 
396
                break
 
397
            page += 1
 
398
 
 
399
    def _search_issues(self, query):
 
400
        path = 'search/issues'
 
401
        return self._list_paged(path, {'q': query}, per_page=DEFAULT_PER_PAGE)
 
402
 
 
403
    def _create_fork(self, path, owner=None):
 
404
        if owner and owner != self.current_user['login']:
 
405
            path += '?organization=%s' % owner
 
406
        response = self._api_request('POST', path)
 
407
        if response.status != 202:
 
408
            raise UnexpectedHttpStatus(path, response.status)
 
409
        return json.loads(response.text)
 
410
 
 
411
    @property
 
412
    def base_url(self):
 
413
        return WEB_GITHUB_URL
 
414
 
 
415
    def __init__(self, transport):
 
416
        self._token = retrieve_github_token('https', GITHUB_HOST)
 
417
        self.transport = transport
 
418
        self._current_user = None
 
419
 
 
420
    @property
 
421
    def current_user(self):
 
422
        if self._current_user is None:
 
423
            self._current_user = self._get_user()
 
424
        return self._current_user
 
425
 
 
426
    def publish_derived(self, local_branch, base_branch, name, project=None,
 
427
                        owner=None, revision_id=None, overwrite=False,
 
428
                        allow_lossy=True, tag_selector=None):
 
429
        base_owner, base_project, base_branch_name = parse_github_branch_url(base_branch)
 
430
        base_repo = self._get_repo(base_owner, base_project)
 
431
        if owner is None:
 
432
            owner = self.current_user['login']
 
433
        if project is None:
 
434
            project = base_repo['name']
 
435
        try:
 
436
            remote_repo = self._get_repo(owner, project)
 
437
        except NoSuchProject:
 
438
            base_repo = self._get_repo(base_owner, base_project)
 
439
            remote_repo = self._create_fork(base_repo['forks_url'], owner)
 
440
            note(gettext('Forking new repository %s from %s') %
 
441
                 (remote_repo['html_url'], base_repo['html_url']))
 
442
        else:
 
443
            note(gettext('Reusing existing repository %s') % remote_repo['html_url'])
 
444
        remote_dir = controldir.ControlDir.open(git_url_to_bzr_url(remote_repo['ssh_url']))
 
445
        try:
 
446
            push_result = remote_dir.push_branch(
 
447
                local_branch, revision_id=revision_id, overwrite=overwrite,
 
448
                name=name, tag_selector=tag_selector)
 
449
        except errors.NoRoundtrippingSupport:
 
450
            if not allow_lossy:
 
451
                raise
 
452
            push_result = remote_dir.push_branch(
 
453
                local_branch, revision_id=revision_id,
 
454
                overwrite=overwrite, name=name, lossy=True,
 
455
                tag_selector=tag_selector)
 
456
        return push_result.target_branch, github_url_to_bzr_url(
 
457
            remote_repo['html_url'], name)
 
458
 
 
459
    def get_push_url(self, branch):
 
460
        owner, project, branch_name = parse_github_branch_url(branch)
 
461
        repo = self._get_repo(owner, project)
 
462
        return github_url_to_bzr_url(repo['ssh_url'], branch_name)
 
463
 
 
464
    def get_derived_branch(self, base_branch, name, project=None, owner=None):
 
465
        base_owner, base_project, base_branch_name = parse_github_branch_url(base_branch)
 
466
        base_repo = self._get_repo(base_owner, base_project)
 
467
        if owner is None:
 
468
            owner = self.current_user['login']
 
469
        if project is None:
 
470
            project = base_repo['name']
 
471
        try:
 
472
            remote_repo = self._get_repo(owner, project)
 
473
            full_url = github_url_to_bzr_url(remote_repo['ssh_url'], name)
 
474
            return _mod_branch.Branch.open(full_url)
 
475
        except NoSuchProject:
 
476
            raise errors.NotBranchError('%s/%s/%s' % (WEB_GITHUB_URL, owner, project))
 
477
 
 
478
    def get_proposer(self, source_branch, target_branch):
 
479
        return GitHubMergeProposalBuilder(self, source_branch, target_branch)
 
480
 
 
481
    def iter_proposals(self, source_branch, target_branch, status='open'):
 
482
        (source_owner, source_repo_name, source_branch_name) = (
 
483
            parse_github_branch_url(source_branch))
 
484
        (target_owner, target_repo_name, target_branch_name) = (
 
485
            parse_github_branch_url(target_branch))
 
486
        target_repo = self._get_repo(target_owner, target_repo_name)
 
487
        state = {
 
488
            'open': 'open',
 
489
            'merged': 'closed',
 
490
            'closed': 'closed',
 
491
            'all': 'all'}
 
492
        pulls = self._get_repo_pulls(
 
493
            strip_optional(target_repo['pulls_url']),
 
494
            head=target_branch_name,
 
495
            state=state[status])
 
496
        for pull in pulls:
 
497
            if (status == 'closed' and pull['merged'] or
 
498
                    status == 'merged' and not pull['merged']):
 
499
                continue
 
500
            if pull['head']['ref'] != source_branch_name:
 
501
                continue
 
502
            if pull['head']['repo'] is None:
 
503
                # Repo has gone the way of the dodo
 
504
                continue
 
505
            if (pull['head']['repo']['owner']['login'] != source_owner or
 
506
                    pull['head']['repo']['name'] != source_repo_name):
 
507
                continue
 
508
            yield GitHubMergeProposal(self, pull)
 
509
 
 
510
    def hosts(self, branch):
 
511
        try:
 
512
            parse_github_branch_url(branch)
 
513
        except NotGitHubUrl:
 
514
            return False
 
515
        else:
 
516
            return True
 
517
 
 
518
    @classmethod
 
519
    def probe_from_url(cls, url, possible_transports=None):
 
520
        try:
 
521
            parse_github_url(url)
 
522
        except NotGitHubUrl:
 
523
            raise UnsupportedHoster(url)
 
524
        transport = get_transport(
 
525
            API_GITHUB_URL, possible_transports=possible_transports)
 
526
        return cls(transport)
 
527
 
 
528
    @classmethod
 
529
    def iter_instances(cls):
 
530
        yield cls(get_transport(API_GITHUB_URL))
 
531
 
 
532
    def iter_my_proposals(self, status='open'):
 
533
        query = ['is:pr']
 
534
        if status == 'open':
 
535
            query.append('is:open')
 
536
        elif status == 'closed':
 
537
            query.append('is:unmerged')
 
538
            # Also use "is:closed" otherwise unmerged open pull requests are
 
539
            # also included.
 
540
            query.append('is:closed')
 
541
        elif status == 'merged':
 
542
            query.append('is:merged')
 
543
        query.append('author:%s' % self.current_user['login'])
 
544
        for issue in self._search_issues(query=' '.join(query)):
 
545
            url = issue['pull_request']['url']
 
546
            response = self._api_request('GET', url)
 
547
            if response.status != 200:
 
548
                raise UnexpectedHttpStatus(url, response.status)
 
549
            yield GitHubMergeProposal(self, json.loads(response.text))
 
550
 
 
551
    def get_proposal_by_url(self, url):
 
552
        raise UnsupportedHoster(url)
 
553
 
 
554
    def iter_my_forks(self):
 
555
        response = self._api_request('GET', '/user/repos')
 
556
        if response.status != 200:
 
557
            raise UnexpectedHttpStatus(self.transport.user_url, response.status)
 
558
        for project in json.loads(response.text):
 
559
            if not project['fork']:
 
560
                continue
 
561
            yield project['full_name']
 
562
 
 
563
    def delete_project(self, path):
 
564
        path = 'repos/' + path
 
565
        response = self._api_request('DELETE', path)
 
566
        if response.status == 404:
 
567
            raise NoSuchProject(path)
 
568
        if response.status == 204:
 
569
            return
 
570
        if response.status == 200:
 
571
            return json.loads(response.text)
 
572
        raise UnexpectedHttpStatus(path, response.status)
 
573
 
 
574
    def get_current_user(self):
 
575
        if self._token is not None:
 
576
            return self.current_user['login']
 
577
        return None
 
578
 
 
579
    def get_user_url(self, username):
 
580
        return urlutils.join(self.base_url, username)
 
581
 
 
582
 
 
583
class GitHubMergeProposalBuilder(MergeProposalBuilder):
 
584
 
 
585
    def __init__(self, gh, source_branch, target_branch):
 
586
        self.gh = gh
 
587
        self.source_branch = source_branch
 
588
        self.target_branch = target_branch
 
589
        (self.target_owner, self.target_repo_name, self.target_branch_name) = (
 
590
            parse_github_branch_url(self.target_branch))
 
591
        (self.source_owner, self.source_repo_name, self.source_branch_name) = (
 
592
            parse_github_branch_url(self.source_branch))
 
593
 
 
594
    def get_infotext(self):
 
595
        """Determine the initial comment for the merge proposal."""
 
596
        info = []
 
597
        info.append("Merge %s into %s:%s\n" % (
 
598
            self.source_branch_name, self.target_owner,
 
599
            self.target_branch_name))
 
600
        info.append("Source: %s\n" % self.source_branch.user_url)
 
601
        info.append("Target: %s\n" % self.target_branch.user_url)
 
602
        return ''.join(info)
 
603
 
 
604
    def get_initial_body(self):
 
605
        """Get a body for the proposal for the user to modify.
 
606
 
 
607
        :return: a str or None.
 
608
        """
 
609
        return None
 
610
 
 
611
    def create_proposal(self, description, reviewers=None, labels=None,
 
612
                        prerequisite_branch=None, commit_message=None,
 
613
                        work_in_progress=False, allow_collaboration=False):
 
614
        """Perform the submission."""
 
615
        if prerequisite_branch is not None:
 
616
            raise PrerequisiteBranchUnsupported(self)
 
617
        # Note that commit_message is ignored, since github doesn't support it.
 
618
        # TODO(jelmer): Probe for right repo name
 
619
        if self.target_repo_name.endswith('.git'):
 
620
            self.target_repo_name = self.target_repo_name[:-4]
 
621
        # TODO(jelmer): Allow setting title explicitly?
 
622
        title = determine_title(description)
 
623
        target_repo = self.gh._get_repo(
 
624
            self.target_owner, self.target_repo_name)
 
625
        assignees = []
 
626
        if reviewers:
 
627
            assignees = []
 
628
            for reviewer in reviewers:
 
629
                if '@' in reviewer:
 
630
                    user = self.gh._get_user_by_email(reviewer)
 
631
                else:
 
632
                    user = self.gh._get_user(reviewer)
 
633
                assignees.append(user['login'])
 
634
        else:
 
635
            assignees = None
 
636
        try:
 
637
            pull_request = self.gh._create_pull(
 
638
                strip_optional(target_repo['pulls_url']),
 
639
                title=title, body=description,
 
640
                head="%s:%s" % (self.source_owner, self.source_branch_name),
 
641
                base=self.target_branch_name,
 
642
                labels=labels, assignee=assignees,
 
643
                draft=work_in_progress,
 
644
                maintainer_can_modify=allow_collaboration,
 
645
                )
 
646
        except ValidationFailed:
 
647
            raise MergeProposalExists(self.source_branch.user_url)
 
648
        return GitHubMergeProposal(self.gh, pull_request)