1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
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
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
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
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
|
# Copyright 2019 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import logging
import threading
import json
import queue
import cherrypy
import voluptuous as v
import time
import uuid
import requests
from urllib.parse import quote_plus
from datetime import datetime
from zuul.connection import BaseConnection
from zuul.web.handler import BaseWebController
from zuul.lib.gearworker import ZuulGearWorker
from zuul.lib.logutil import get_annotated_logger
from zuul.driver.gitlab.gitlabmodel import GitlabTriggerEvent, MergeRequest
class GitlabGearmanWorker(object):
"""A thread that answers gearman requests"""
log = logging.getLogger("zuul.GitlabGearmanWorker")
def __init__(self, connection):
self.config = connection.sched.config
self.connection = connection
handler = "gitlab:%s:payload" % self.connection.connection_name
self.jobs = {
handler: self.handle_payload,
}
self.gearworker = ZuulGearWorker(
'Zuul Gitlab Worker',
'zuul.GitlabGearmanWorker',
'gitlab',
self.config,
self.jobs)
def handle_payload(self, job):
args = json.loads(job.arguments)
payload = args["payload"]
self.log.info(
"Gitlab Webhook Received event kind: %(object_kind)s" % payload)
try:
self.__dispatch_event(payload)
output = {'return_code': 200}
except Exception:
output = {'return_code': 503}
self.log.exception("Exception handling Gitlab event:")
job.sendWorkComplete(json.dumps(output))
def __dispatch_event(self, payload):
self.log.info(payload)
event = payload['object_kind']
try:
self.log.info("Dispatching event %s" % event)
self.connection.addEvent(payload, event)
except Exception as err:
message = 'Exception dispatching event: %s' % str(err)
self.log.exception(message)
raise Exception(message)
def start(self):
self.gearworker.start()
def stop(self):
self.gearworker.stop()
class GitlabEventConnector(threading.Thread):
"""Move events from Gitlab into the scheduler"""
log = logging.getLogger("zuul.GitlabEventConnector")
def __init__(self, connection):
super(GitlabEventConnector, self).__init__()
self.daemon = True
self.connection = connection
self._stopped = False
self.event_handler_mapping = {
'merge_request': self._event_merge_request,
'note': self._event_note,
}
def stop(self):
self._stopped = True
self.connection.addEvent(None)
def _event_base(self, body):
event = GitlabTriggerEvent()
attrs = body['object_attributes']
event.updated_at = int(datetime.strptime(
attrs['updated_at'], '%Y-%m-%d %H:%M:%S %Z').strftime('%s'))
event.created_at = int(datetime.strptime(
attrs['created_at'], '%Y-%m-%d %H:%M:%S %Z').strftime('%s'))
event.project_name = body['project']['path_with_namespace']
event.ref = "refs/merge-requests/%s/head" % event.change_number
return event
# https://docs.gitlab.com/ee/user/project/integrations/webhooks.html#merge-request-events
def _event_merge_request(self, body):
event = self._event_base(body)
attrs = body['object_attributes']
event.title = attrs['title']
event.change_number = attrs['iid']
event.branch = attrs['target_branch']
event.patch_number = attrs['last_commit']['id']
event.change_url = self.connection.getPullUrl(event.project_name,
event.change_number)
if event.created_at == event.updated_at:
event.action = 'opened'
else:
event.action = 'changed'
event.type = 'gl_merge_request'
return event
# https://docs.gitlab.com/ee/user/project/integrations/webhooks.html#comment-on-merge-request
def _event_note(self, body):
event = self._event_base(body)
event.comment = body['object_attributes']['note']
mr = body['merge_request']
event.title = mr['title']
event.change_number = mr['iid']
event.branch = mr['target_branch']
event.patch_number = mr['last_commit']['id']
event.change_url = self.connection.getPullUrl(event.project_name,
event.change_number)
event.action = 'comment'
event.type = 'gl_merge_request'
return event
def _handleEvent(self):
ts, json_body, event_type = self.connection.getEvent()
if self._stopped:
return
self.log.info("Received event: %s" % str(event_type))
if event_type not in self.event_handler_mapping:
message = "Unhandled Gitlab event: %s" % event_type
self.log.info(message)
return
if event_type in self.event_handler_mapping:
self.log.debug("Handling event: %s" % event_type)
try:
event = self.event_handler_mapping[event_type](json_body)
except Exception:
self.log.exception(
'Exception when handling event: %s' % event_type)
event = None
if event:
event.zuul_event_id = str(uuid.uuid4())
event.timestamp = ts
if event.change_number:
project = self.connection.source.getProject(event.project_name)
self.connection._getChange(project,
event.change_number,
event.patch_number,
refresh=True,
url=event.change_url,
event=event)
event.project_hostname = self.connection.canonical_hostname
self.connection.logEvent(event)
self.connection.sched.addEvent(event)
def run(self):
while True:
if self._stopped:
return
try:
self._handleEvent()
except Exception:
self.log.exception("Exception moving Gitlab event:")
finally:
self.connection.eventDone()
class GitlabAPIClientException(Exception):
pass
class GitlabAPIClient():
log = logging.getLogger("zuul.GitlabAPIClient")
def __init__(self, baseurl, api_token):
self.session = requests.Session()
self.baseurl = '%s/api/v4/' % baseurl
self.api_token = api_token
self.headers = {'Authorization': 'Bearer %s' % (
self.api_token)}
def _manage_error(self, data, code, url, verb, zuul_event_id=None):
if code < 400:
return
else:
raise GitlabAPIClientException(
"[e: %s] Unable to %s on %s (code: %s) due to: %s" % (
zuul_event_id, verb, url, code, data
))
def get(self, url, zuul_event_id=None):
log = get_annotated_logger(self.log, zuul_event_id)
log.debug("Getting resource %s ..." % url)
ret = self.session.get(url, headers=self.headers)
log.debug("GET returned (code: %s): %s" % (
ret.status_code, ret.text))
return ret.json(), ret.status_code, ret.url, 'GET'
def post(self, url, params=None, zuul_event_id=None):
log = get_annotated_logger(self.log, zuul_event_id)
log.info(
"Posting on resource %s, params (%s) ..." % (url, params))
ret = self.session.post(url, data=params, headers=self.headers)
log.debug("POST returned (code: %s): %s" % (
ret.status_code, ret.text))
return ret.json(), ret.status_code, ret.url, 'POST'
# https://docs.gitlab.com/ee/api/merge_requests.html#get-single-mr
def get_mr(self, project_name, number, zuul_event_id=None):
path = "/projects/%s/merge_requests/%s" % (
quote_plus(project_name), number)
resp = self.get(self.baseurl + path, zuul_event_id=zuul_event_id)
self._manage_error(*resp, zuul_event_id=zuul_event_id)
return resp[0]
# https://docs.gitlab.com/ee/api/branches.html#list-repository-branches
def get_project_branches(self, project_name, zuul_event_id=None):
path = "/projects/%s/repository/branches" % (
quote_plus(project_name))
resp = self.get(self.baseurl + path, zuul_event_id=zuul_event_id)
self._manage_error(*resp, zuul_event_id=zuul_event_id)
return [branch['name'] for branch in resp[0]]
# https://docs.gitlab.com/ee/api/notes.html#create-new-merge-request-note
def comment_mr(self, project_name, number, msg, zuul_event_id=None):
path = "/projects/%s/merge_requests/%s/notes" % (
quote_plus(project_name), number)
params = {'body': msg}
resp = self.post(
self.baseurl + path, params=params,
zuul_event_id=zuul_event_id)
self._manage_error(*resp, zuul_event_id=zuul_event_id)
return resp[0]
class GitlabConnection(BaseConnection):
driver_name = 'gitlab'
log = logging.getLogger("zuul.GitlabConnection")
payload_path = 'payload'
def __init__(self, driver, connection_name, connection_config):
super(GitlabConnection, self).__init__(
driver, connection_name, connection_config)
self.projects = {}
self.project_branch_cache = {}
self._change_cache = {}
self.server = self.connection_config.get('server', 'gitlab.com')
self.baseurl = self.connection_config.get(
'baseurl', 'https://%s' % self.server).rstrip('/')
self.cloneurl = self.connection_config.get(
'cloneurl', self.baseurl).rstrip('/')
self.canonical_hostname = self.connection_config.get(
'canonical_hostname', self.server)
self.webhook_token = self.connection_config.get(
'webhook_token', '')
self.api_token = self.connection_config.get(
'api_token', '')
self.gl_client = GitlabAPIClient(self.baseurl, self.api_token)
self.sched = None
self.event_queue = queue.Queue()
self.source = driver.getSource(self)
def _start_event_connector(self):
self.gitlab_event_connector = GitlabEventConnector(self)
self.gitlab_event_connector.start()
def _stop_event_connector(self):
if self.gitlab_event_connector:
self.gitlab_event_connector.stop()
self.gitlab_event_connector.join()
def onLoad(self):
self.log.info('Starting Gitlab connection: %s' % self.connection_name)
self.gearman_worker = GitlabGearmanWorker(self)
self.log.info('Starting event connector')
self._start_event_connector()
self.log.info('Starting GearmanWorker')
self.gearman_worker.start()
def onStop(self):
if hasattr(self, 'gearman_worker'):
self.gearman_worker.stop()
self._stop_event_connector()
def addEvent(self, data, event=None):
return self.event_queue.put((time.time(), data, event))
def getEvent(self):
return self.event_queue.get()
def eventDone(self):
self.event_queue.task_done()
def getWebController(self, zuul_web):
return GitlabWebController(zuul_web, self)
def getProject(self, name):
return self.projects.get(name)
def addProject(self, project):
self.projects[project.name] = project
def getProjectBranches(self, project, tenant):
branches = self.project_branch_cache.get(project.name)
if branches is not None:
return branches
branches = self.gl_client.get_project_branches(project.name)
self.project_branch_cache[project.name] = branches
self.log.info("Got branches for %s" % project.name)
return branches
def clearBranchCache(self):
self.project_branch_cache = {}
def getGitwebUrl(self, project, sha=None):
url = '%s/%s' % (self.baseurl, project)
if sha is not None:
url += '/tree/%s' % sha
return url
def getPullUrl(self, project, number):
return '%s/%s/merge_requests/%s' % (self.baseurl, project, number)
def getGitUrl(self, project):
return '%s/%s.git' % (self.cloneurl, project.name)
def getChange(self, event, refresh=False):
project = self.source.getProject(event.project_name)
if event.change_number:
self.log.info("Getting change for %s#%s" % (
project, event.change_number))
change = self._getChange(
project, event.change_number, event.patch_number,
refresh=refresh, event=event)
change.source_event = event
change.is_current_patchset = (change.patchset ==
event.patch_number)
else:
self.log.info("Getting change for %s ref:%s" % (
project, event.ref))
raise NotImplementedError
return change
def _getChange(self, project, number, patchset=None,
refresh=False, url=None, event=None):
log = get_annotated_logger(self.log, event)
key = (project.name, number, patchset)
change = self._change_cache.get(key)
if change and not refresh:
log.debug("Getting change from cache %s" % str(key))
return change
if not change:
change = MergeRequest(project.name)
change.project = project
change.number = number
# patchset is the tips commit of the PR
change.patchset = patchset
change.url = url
change.uris = list(url)
self._change_cache[key] = change
try:
log.debug("Getting change mr#%s from project %s" % (
number, project.name))
self._updateChange(change, event)
except Exception:
if key in self._change_cache:
del self._change_cache[key]
raise
return change
def _updateChange(self, change, event):
log = get_annotated_logger(self.log, event)
log.info("Updating change from Gitlab %s" % change)
change.mr = self.getPull(
change.project.name, change.number, event=event)
change.ref = "refs/merge-requests/%s/head" % change.number
change.branch = change.mr['target_branch']
change.patchset = change.mr['sha']
# Files changes are not part of the Merge Request data
# See api/merge_requests.html#get-single-mr-changes
# this endpoint includes file changes information
change.files = None
change.title = change.mr['title']
change.open = change.mr['state'] == 'opened'
change.is_merged = change.mr['merged_at'] is not None
# Can be "can_be_merged"
change.merge_status = change.mr['merge_status']
change.message = change.mr['description']
change.labels = change.mr['labels']
change.updated_at = int(datetime.strptime(
change.mr['updated_at'], '%Y-%m-%dT%H:%M:%S.%fZ').strftime('%s'))
log.info("Updated change from Gitlab %s" % change)
if self.sched:
self.sched.onChangeUpdated(change, event)
return change
def getPull(self, project_name, number, event=None):
log = get_annotated_logger(self.log, event)
mr = self.gl_client.get_mr(project_name, number, zuul_event_id=event)
log.info('Got MR %s#%s', project_name, number)
return mr
def commentMR(self, project_name, number, message, event=None):
log = get_annotated_logger(self.log, event)
self.gl_client.comment_mr(
project_name, number, message, zuul_event_id=event)
log.info("Commented on MR %s#%s", project_name, number)
class GitlabWebController(BaseWebController):
log = logging.getLogger("zuul.GitlabWebController")
def __init__(self, zuul_web, connection):
self.connection = connection
self.zuul_web = zuul_web
def _validate_token(self, headers):
try:
event_token = headers['x-gitlab-token']
except KeyError:
raise cherrypy.HTTPError(401, 'x-gitlab-token header missing.')
configured_token = self.connection.webhook_token
if not configured_token == event_token:
self.log.debug(
"Missmatch (Incoming token: %s, Configured token: %s)" % (
event_token, configured_token))
raise cherrypy.HTTPError(
401,
'Token does not match the server side configured token')
@cherrypy.expose
@cherrypy.tools.json_out(content_type='application/json; charset=utf-8')
def payload(self):
headers = dict()
for key, value in cherrypy.request.headers.items():
headers[key.lower()] = value
body = cherrypy.request.body.read()
self.log.info("Event header: %s" % headers)
self.log.info("Event body: %s" % body)
self._validate_token(headers)
json_payload = json.loads(body.decode('utf-8'))
job = self.zuul_web.rpc.submitJob(
'gitlab:%s:payload' % self.connection.connection_name,
{'payload': json_payload})
return json.loads(job.data[0])
def getSchema():
return v.Any(str, v.Schema(dict))
|