heptapod.py 20.8 KB
Newer Older
1
import contextlib
2
import json
3
4
from io import BytesIO
import logging
5
import os
6
7
8
from pathlib import Path
import requests
import selenium.webdriver
9
import shutil
10
11
12
13
14
15
16
17
18
import subprocess
import sys
import tarfile
import time
from urllib.parse import urlparse

from tests.utils.user import User
from tests.utils import docker
from tests.utils import session
19
from .constants import DATA_DIR
20
21
22

logger = logging.getLogger(__name__)

23
INITIAL_TIMEOUT = 600  # seconds
24
25
26
27
28
29
30
31
32

BRANCH_PROTECTIONS = dict(none=0,
                          dev_can_push=1,
                          full=2,
                          dev_can_merge=3,
                          )


class Heptapod:
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
    """Base class and minimum common control of Heptapod server.

    This is used directly in case `--heptapod-remote` is selected.
    """

    fs_access = False
    """True if manipulation of files is possible.

    Implies :attr:`repositories_root` not to be None.
    """

    shell_access = False
    """True if running arbitrary commands as in a shell is possible."""

    repositories_root = None
    """Path to the repositories, from the Heptapod server point of view.

    This is potentially not meaningful on the system that runs the test,
    see :class:`DockerHeptapod` for an example.
    """
53

54
55
56
57
    reverse_call_host = None
    """Network address for the system running these tests, seen from Heptapod.
    """

58
59
60
    webdriver_remote_url = None
    """URL for a Selenium RemoteWebDriver."""

61
62
63
64
    wait_after_first_response = 0
    """Time to wait after we've had a first non error HTTP response.
    """

65
66
    def __init__(self, url, ssh_user, ssh_port,
                 reverse_call_host=None,
67
                 wait_after_first_response=0,
68
                 webdriver_remote_url=None):
69
70
71
        self.parsed_url = urlparse(url)
        self.url = url
        self.ssh_port = ssh_port
72
        self.ssh_user = ssh_user
73
        self.users = {}
74
75
        if reverse_call_host is not None:
            self.reverse_call_host = reverse_call_host
76
        self.dead = None
77
        self.webdriver_remote_url = webdriver_remote_url
78
        self.wait_after_first_response = wait_after_first_response
79
        self.settings = {}
80

81
82
83
84
    @property
    def heptapod(self):
        return self

85
86
    @property
    def ssh_url(self):
87
        return 'ssh://{user}@{host}:{port}'.format(
88
            host=self.host,
89
            user=self.ssh_user,
90
91
92
            port=self.ssh_port,
        )

93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
    @property
    def host(self):
        return self.parsed_url.netloc.rsplit(':', 1)[0]

    @property
    def api_url(self):
        return '/'.join((self.url, 'api', 'v4'))

    @property
    def root_token_headers(self):
        return {'Private-Token': self.users['root']['token']}

    @property
    def basic_user_token_headers(self):
        return {'Private-Token': self.users['test_basic']['token']}

109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
    def get_user(self, name):
        """Return a :class:`User` instance, or `None`."""
        info = self.users.get(name)
        if info is None:
            return None
        user_id = info.get('id')
        password = info.get('password')

        if user_id is None:
            logger.info(
                "Searching for known user %r because its id is unknown.",
                name)
            user = User.search(self, name)
            user.password = password
            user.store_in_heptapod()
            return user

        return User(heptapod=self, id=user_id, name=name, password=password)

128
129
130
131
132
133
134
135
136
137
138
    def new_webdriver(self):
        options = selenium.webdriver.ChromeOptions()
        options.add_argument('--headless')
        if self.webdriver_remote_url:
            return selenium.webdriver.Remote(
                command_executor=self.webdriver_remote_url,
                options=options
            )
        else:
            return selenium.webdriver.Chrome(options=options)

139
    def get_user_webdriver(self, user_name):
140
141
142
143
144
145
146
147
        info = self.users[user_name]
        driver = info.get('webdriver')
        if driver is not None:
            return driver

        logger.info("Initializing a signed-in webdriver for user %r",
                    user_name)

148
149
150
151
152
153
154
155
156
157
158
        if user_name == 'root':
            driver = self.new_webdriver()
            # guaranteeing driver to be available for teardown
            # as soon as created
            info['webdriver'] = driver
            session.login_as_root(driver, self, info['password'])
        else:
            # TODO should init webdriver from here and store it before login
            # attempt as well
            driver = session.make_webdriver(self, user_name, info['password'])
            info['webdriver'] = driver
159
        return driver
160

161
162
163
164
165
166
167
168
169
170
171
    def wait_startup(self, first_response_timeout=INITIAL_TIMEOUT,
                     wait_after_first_response=None):
        """Wait for Heptapod to be ready after startup.

        We have to take into account that the server may have just started
        (that's frequent in development and it's annoying for a human to
        wait) or could even be starting from scratch, configuring itself,
        creating the DB schema etc. (typical of CI).
        In that latter case, an amount of extra wait after the first successful
        HTTP response is often needed.
        """
172
        logger.info("Waiting for Heptapod to answer requests")
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
        dead_msg = ("Heptapod server did not "
                    "respond in %s seconds" % first_response_timeout)
        start = time.time()
        while time.time() < start + first_response_timeout:
            try:
                resp = requests.get(self.url, allow_redirects=False)
            except IOError:
                resp = None

            if resp is None:
                logger.debug("Couldn't reach Heptapod")
            elif resp.status_code >= 400:
                logger.debug("Heptapod response code %r", resp.status_code)
            else:
                logger.info("Heptapod is up")
                self.dead = False
                if wait_after_first_response:
                    logger.info("Waiting additional %d seconds "
                                "after first successful HTTP call",
                                wait_after_first_response)
                    time.sleep(wait_after_first_response)
                return

            duration = 1
            logger.debug("Retrying in %.1f seconds", duration)
            time.sleep(duration)

        self.dead = True
        raise AssertionError(dead_msg)

203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
    def instance_cache_file(self):
        return os.path.join(DATA_DIR, 'instance.cache')

    def load_instance_cache(self):
        path = self.instance_cache_file()
        try:
            with open(path) as cachef:
                cached = json.load(cachef)

        except Exception:
            logger.info("Cache file %r not available or not readable. "
                        "Heptapod instance info will be retrieved "
                        "or initialized", path)
        else:
            for name, info in cached['users'].items():
                self.users[name] = dict(name=name,
                                        token=info['token'])

    def update_instance_cache(self):
        users = {name: dict(token=info['token'])
                 for name, info in self.users.items()}
        with open(self.instance_cache_file(), 'w') as cachef:
            json.dump(dict(users=users), cachef)

227
228
229
230
231
232
233
234
235
236
237
    def prepare(self, root_password):
        """Make all preparations for the Heptapod instance to be testable.

        This currently amounts to

        - defining the root password
        - activating and retrieving a root API token
        - creating a persistent `test_basic` user
        - activating and retrieving an API token for `test_basic`
        - keeping a logged in webdriver for each persistent user
        """
238
        assert not self.dead, "Heptapod server marked dead by previous test."
239
240

        if self.dead is None:
241
242
            self.wait_startup(
                wait_after_first_response=self.wait_after_first_response)
243
244
        self.load_instance_cache()

245
        logger.info("Preparing root user.")
246
        start = time.time()
247
248
        root = User.init_root(self, root_password)
        root.ensure_private_token()
249

250
        logger.info("Preparing application settings.")
251
252
253
254
        # necessary if we want to listen to web hooks from these tests
        # in GitLab v12.2.0, this is deprecated for ...from_web_hooks...
        self.set_application_settings(
            allow_local_requests_from_hooks_and_services="true")
255
256

        logger.info("Preparing basic user.")
257
258
259
        session.ensure_user(self, 'test_basic',
                            fullname='Bäsîc Test',
                            password='test_basic')
260
261

        logger.info("Uploading users SSH keys.")
262
263
264
265
266
267
        self.load_ssh_keys()
        self.upload_ssh_pub_keys()
        subprocess.call((
            'ssh-keygen',
            '-R', '[{host}]:{port}'.format(
                host=self.host, port=self.ssh_port)))
268
        self.update_instance_cache()
269
270
        logger.info("All preparations done in %.2f seconds. "
                    "Proceeding with tests.", time.time() - start)
271
272

    def set_application_settings(self, **settings):
273
        """Change GitLab application settings and update :attr:`settings`."""
274
275
276
277
278
279
        resp = requests.put(
            self.api_url + '/application/settings',
            headers=self.root_token_headers,
            data=settings,
        )
        assert resp.status_code == 200
280
281
282
283
284
285
286
287
288
289
        self.settings = resp.json()

    def sync_application_settings(self):
        """Update :attr:`settings` for current values"""
        resp = requests.get(
            self.api_url + '/application/settings',
            headers=self.root_token_headers,
        )
        assert resp.status_code == 200
        self.settings = resp.json()
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312

    def load_ssh_keys(self):
        """Load client-side information to use SSH keys

        Also makes sure the keys are actually usable (perms)
        """
        ssh_dir = Path(__file__).parent.parent / 'data' / 'ssh'
        for name, info in self.users.items():
            base_fname = 'id_rsa_heptapod_' + name
            priv = ssh_dir / base_fname
            pub = ssh_dir / (base_fname + '.pub')

            # VCSes tend not to preserve non-executable perm bits
            priv.chmod(0o600)
            info['ssh'] = dict(priv=str(priv), pub=pub.read_text())

    def upload_ssh_pub_keys(self):
        """Upload SSH public keys for all users to Heptapod."""
        # it's really time to put the actual user object in our `self.users`
        for name, info in self.users.items():
            user = User.search(self, name)
            user.ensure_ssh_pub_key(info['ssh']['pub'])

313
    def close_webdrivers(self):
314
        for user in self.users.values():
315
            driver = user.pop('webdriver', None)
316
            if driver is not None:
317
                logger.info("Closing webdriver for user %r", user['name'])
318
319
                driver.close()

320
321
322
323
324
    def close(self):
        if self.dead is not False:
            return
        self.close_webdrivers()

325
    def run_shell(self, command, **kw):
326
327
328
329
330
331
332
        raise NotImplementedError('run_shell')

    def force_remove_route(self, route_path, source_type='Project'):
        logger.error("Attempt to force-remove route %r, not implemented "
                     "for %r", route_path, self.__class__)
        raise NotImplementedError('force_remove_route')

333
334
335
336
337
338
339
340
341
342
343
344
    def gitlab_ctl(self, command, services=None):
        """Apply service management command.

        'command' would typically be 'start', 'stop', etc.

        :param services: an iterable of service names (who can themselves
                         be different depending on the concrete subclass).
                         If supplied, the command will apply only to those
                         services.
        """
        raise NotImplementedError('gitlab_ctl')

345
346
347
    def rake(self, *args):
        """Call GitLab Rake"""
        raise NotImplementedError('rake')
348

349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
    def remove_all_backups(self):
        """Remove all existing backups with no impediment for new backups.
        """
        raise NotImplementedError('remove_all_backups')

    def backup_create(self, clean_previous=True):
        """Create a new backup

        :param bool clean_previous: if true, any previously existing backups
            are removed. This is handy so that the restore rake task knows
            which one to restore without any need to tell it.
        """
        if clean_previous:
            self.remove_all_backups()
        self.rake('gitlab:backup:create')

    @contextlib.contextmanager
366
    def backup_restore(self):
367
368
369
370
371
372
373
374
        """Context manager for backups restoration.

        This is a context manager as a way to provide resuming of the
        tests session on errors, in a convenient way for the caller.
        That means ensuring as much as possible that the server is running,
        maybe wait again for it, reinitialize passwords and tokens…
        """
        try:
375
            self.gitlab_ctl('stop', services=self.RAILS_SERVICES)
376
            self.rake('gitlab:backup:restore', 'force=yes')
377
            self.gitlab_ctl('start', services=self.RAILS_SERVICES)
378
379
380
381
382
383

            self.wait_startup()
            yield

        except Exception:
            # these are idempotent
384
            self.gitlab_ctl('start', services=self.RAILS_SERVICES)
385
386
387
388
389

            # Worst case scenario, we lost all our data. We need to
            # reprepare the server for subsequent tests
            self.prepare(self.users['root']['password'])
            raise
390

391
392
393
394
395
396
397
398
399
400
401
402
403
404
    def apply_hashed_storage_setting(self, hashed_storage):
        # TODO it would be tempting not to restart if the setting is already
        # at the wished value, but this currently cannot take into account
        # rollbacked values that aren't followed by a restart. This will
        # be more complicated and take more time than we can afford right now
        # to really make work.
        self.set_application_settings(hashed_storage_enabled=hashed_storage)

        # let's be sure that redis is restarted when the Rails services
        # start
        self.gitlab_ctl('stop', self.RAILS_SERVICES)
        self.gitlab_ctl('stop', ['redis'])
        # we restart everything in case a service would depend on Redis
        # and would fail to reconnect automatically
405
406
407

        # closing all webdrivers, because restart of Redis will kill sessions
        self.close_webdrivers()
408
409
410
411
412
413
414
        self.gitlab_ctl('restart')
        self.wait_startup()

        # recheck that the setting is applied
        self.sync_application_settings()
        assert self.settings['hashed_storage_enabled'] is hashed_storage

415
416
417

class DockerHeptapod(Heptapod):

418
419
420
421
    fs_access = True

    shell_access = True

422
423
    repositories_root = '/var/opt/gitlab/git-data/repositories'

424
425
    RAILS_SERVICES = ('unicorn', 'sidekiq')

426
427
428
    def __init__(self, docker_container, **kw):
        super(DockerHeptapod, self).__init__(**kw)
        self.docker_container = docker_container
429
430
        if self.reverse_call_host is None:
            self.reverse_call_host = docker.host_address(docker_container)
431
432
433
434

    def execute(self, command, user='root'):
        return docker.heptapod_exec(self.docker_container, command, user=user)

435
436
    def run_shell(self, command, **kw):
        return docker.heptapod_run_shell(self.docker_container, command, **kw)
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473

    def put_archive(self, dest, path, owner='git'):
        res = docker.heptapod_put_archive(self.docker_container, dest, path)
        self.run_shell(['chown', '-R', 'git:root', dest])
        return res

    def put_archive_bin(self, dest, fobj):
        return docker.heptapod_put_archive_bin(
            self.docker_container, dest, fobj)

    def get_archive(self, path, tarf):
        return docker.heptapod_get_archive(self.docker_container, path, tarf)

    def put_file_lines(self, path, lines, uid=998, gid=998):
        dirpath, filename = path.rsplit('/', 1)
        tar_buf = BytesIO()
        tarf = tarfile.open(mode='w:', fileobj=tar_buf)

        tinfo = tarfile.TarInfo(name='hgrc')
        contents_buf = BytesIO()
        contents_buf.writelines(l.encode() for l in lines)
        tinfo.size = contents_buf.tell()
        tinfo.uid, tinfo.gid = uid, gid
        contents_buf.seek(0)
        tarf.addfile(tinfo, fileobj=contents_buf)

        tar_buf.seek(0)
        self.put_archive_bin(dirpath, tar_buf)

    def get_file_lines(self, path):
        dirname, filename = path.rsplit('/', 1)
        buf = BytesIO()
        self.get_archive(path, buf)
        buf.seek(0)
        tarf = tarfile.open(mode='r:', fileobj=buf)
        return [l.decode() for l in tarf.extractfile(filename).readlines()]

474
475
476
477
478
479
480
481
482
483
484
485
486
    def force_remove_route(self, route_path, source_type='Project'):
        """Delete a route from the database.

        Sometimes GitLab fails to clean Project routes after failed tests.
        """
        logger.warn("Cleaning up leftover route at %r", route_path)
        self.run_shell([
            'gitlab-psql', 'gitlabhq_production',
            '-c', "DELETE FROM routes "
            "WHERE source_type='%s' "
            "  AND path='%s'" % (source_type, route_path)
        ])

487
488
489
490
    def rake(self, *args):
        cmd = ['gitlab-rake']
        cmd.extend(args)
        self.run_shell(cmd, user='git')
491

492
    def remove_all_backups(self):
493
494
495
496
497
        # using find in order not to rely on shell expansion for *.tar
        self.run_shell(('find', '/var/opt/gitlab/backups',
                        '-name', '*.tar',
                        '-delete'))

498
499
500
501
502
503
504
    def gitlab_ctl(self, command, services=None):
        base_cmd = ('gitlab-ctl', command)
        if services is None:
            self.run_shell(base_cmd)
        else:
            for service in services:
                self.run_shell(base_cmd + (service, ))
505

506
507

class SourceHeptapod(Heptapod):
508
509
510
511
512
513
514
515
516
    """An Heptapod server installed from source on the same system.

    Same system means without using any container technology (Docker or
    otherwise) that would insulate the tests from the server.
    """

    fs_access = True

    shell_access = True
517

518
519
    reverse_call_host = 'localhost'

520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
    @property
    def ssh_url(self):
        return 'ssh://{host}:{port}'.format(
            host=self.host,
            port=self.ssh_port,
        )

    def __init__(self, repositories_root, **kw):
        super(SourceHeptapod, self).__init__(**kw)
        self.repositories_root = repositories_root

    def execute(self, command, user='git'):
        if user != 'git':
            raise NotImplementedError(
                "On source Heptapod, only same user as for Rails and HgServe "
                "is allowed")
        process = subprocess.Popen(command,
                                   stdout=subprocess.PIPE,
                                   stderr=subprocess.PIPE)
        out, err = [o.decode() for o in process.communicate()]
        retcode = process.poll()

        if out:
            sys.stdout.write(out)
        if err:
            sys.stderr.write(err)
        return retcode, out

548
549
    def run_shell(self, command, **kw):
        exit_code, output = self.execute(command, **kw)
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
        if exit_code != 0:
            raise RuntimeError(
                ('Heptapod command {command} returned a non-zero '
                 'exit code {exit_code}').format(
                     command=command,
                     exit_code=exit_code,
                 ))

    def put_archive(self, dest, path, owner='git'):
        if owner != 'git':
            raise NotImplementedError(
                "On source Heptapod, only same owner as for Rails and HgServe "
                "is allowed")
        subprocess.check_call(['tar', 'xf', path], cwd=dest)

    def get_file_lines(self, path):
        with open(path, 'r') as fobj:
            return fobj.readlines()

    def put_file_lines(self, path, lines):
        with open(path, 'w') as fobj:
            fobj.writelines(lines)
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607


class GdkHeptapod(SourceHeptapod):
    """An Heptapod server running with the GDK.
    """

    fs_access = True

    shell_access = True

    reverse_call_host = 'localhost'

    RAILS_SERVICES = ('rails-web', 'rails-background-jobs')

    def __init__(self, gdk_root, **kw):
        self.gdk_root = gdk_root
        self.rails_root = os.path.join(gdk_root, 'gitlab')
        super(GdkHeptapod, self).__init__(
            repositories_root=os.path.join(gdk_root, 'repositories'),
            **kw)

    @property
    def backups_dir(self):
        return os.path.join(self.rails_root, 'tmp', 'backups')

    def remove_all_backups(self):
        if os.path.exists(self.backups_dir):
            shutil.rmtree(self.backups_dir)
        # as of GitLab 12.10, parent dir is always present
        os.mkdir(self.backups_dir)

    def rake(self, *args):
        cmd = ['bundle', 'exec', 'rake']
        cmd.extend(args)
        subprocess.check_call(cmd, cwd=self.rails_root)

608
609
610
611
612
613
614
615
616
617
618
    def gitlab_ctl(self, command, services=None):
        base_cmd = ('gdk', command)

        def do_command(*opt_args):
            subprocess.check_call(base_cmd + opt_args, cwd=self.rails_root)

        if services is None:
            do_command()
        else:
            for service in services:
                do_command(service)