Created
October 26, 2018 14:28
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Modification or builtbot's BitbucketPullrequestPoller to support auth and fix encoding issues.
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# This file is part of Buildbot. Buildbot is free software: you can | |
# redistribute it and/or modify it under the terms of the GNU General Public | |
# License as published by the Free Software Foundation, version 2. | |
# | |
# This program is distributed in the hope that it will be useful, but WITHOUT | |
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more | |
# details. | |
# | |
# You should have received a copy of the GNU General Public License along with | |
# this program; if not, write to the Free Software Foundation, Inc., 51 | |
# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
# | |
# Copyright Buildbot Team Members | |
from __future__ import absolute_import | |
from __future__ import print_function | |
import base64 | |
import json | |
import time | |
import urllib | |
import treq | |
from datetime import datetime | |
from twisted.internet import defer | |
from twisted.internet import reactor | |
from twisted.python import log | |
from twisted.web import client | |
from buildbot.changes import base | |
from buildbot.util import bytes2unicode | |
from buildbot.util import datetime2epoch | |
from buildbot.util import deferredLocked | |
from buildbot.util import epoch2datetime | |
class BitbucketPullrequestPoller(base.PollingChangeSource): | |
compare_attrs = ("owner", "slug", "branch", | |
"pollInterval", "useTimestamps", | |
"category", "project", "pollAtLaunch") | |
db_class_name = 'BitbucketPullrequestPoller' | |
def __init__(self, owner, slug, | |
branch=None, | |
pollInterval=10 * 60, | |
useTimestamps=True, | |
category=None, | |
project='', | |
pullrequest_filter=True, | |
encoding='utf-8', | |
pollAtLaunch=False, | |
clientId=None, | |
clientSecret=None, | |
): | |
self.owner = owner | |
self.slug = slug | |
self.branch = branch | |
base.PollingChangeSource.__init__( | |
self, name='/'.join([owner, slug]), pollInterval=pollInterval, pollAtLaunch=pollAtLaunch) | |
self.encoding = encoding | |
if hasattr(pullrequest_filter, '__call__'): | |
self.pullrequest_filter = pullrequest_filter | |
else: | |
self.pullrequest_filter = (lambda _: pullrequest_filter) | |
self.lastChange = time.time() | |
self.lastPoll = time.time() | |
self.useTimestamps = useTimestamps | |
self.category = category if callable( | |
category) else bytes2unicode(category) | |
self.project = bytes2unicode(project) | |
self.initLock = defer.DeferredLock() | |
self.accessToken = None | |
self.refreshToken = None | |
self.refreshWhen = None | |
self.clientId = clientId | |
self.clientSecret = clientSecret | |
def describe(self): | |
return "BitbucketPullrequestPoller watching the "\ | |
"Bitbucket repository %s/%s, branch: %s" % ( | |
self.owner, self.slug, self.branch) | |
@deferredLocked('initLock') | |
def poll(self): | |
if self.accessToken is None: | |
d = self._getAuthToken() | |
d.addCallback(lambda _: self._getChanges()) | |
else: | |
d = self._getChanges() | |
d.addCallback(self._processChanges) | |
d.addErrback(self._processChangesFailure) | |
return d | |
def _receiveAuthToken(self, body): | |
result = json.loads(body, encoding=self.encoding) | |
self.accessToken = result["access_token"] | |
self.refreshToken = result["refresh_token"] | |
reactor.callLater(result["expires_in"] - 300, self._getAuthToken) | |
def _getAuthToken(self): | |
basicAuth = base64.encodebytes( | |
':'.join([self.clientId, self.clientSecret]).encode(self.encoding), | |
).strip() | |
authstr = "Basic: {}".format(basicAuth) | |
if self.refreshToken: | |
postdata = "&".join([ | |
"grant_type=refresh_token", | |
"refresh_token=" + self.refreshToken, | |
]) | |
else: | |
postdata = "grant_type=client_credentials" | |
url = b"https://bitbucket.org/site/oauth2/access_token" | |
headers = { | |
b'Content-Type': [b'application/x-www-form-urlencoded'], | |
} | |
print(url) | |
print(headers) | |
print(postdata) | |
d = treq.post( | |
url, | |
postdata.encode(self.encoding), | |
headers=headers, | |
auth=(self.clientId, self.clientSecret), | |
) | |
d.addCallback(self._receivePage) | |
d.addCallback(self._receiveAuthToken) | |
return d | |
def _receivePage(self, result): | |
if result.code != 200: | |
return defer.failure(result) | |
else: | |
return result.content() | |
def getPage(self, url, **kwargs): | |
if isinstance(url, str): | |
url = url.encode('utf-8') | |
headers = kwargs.pop("Headers", {}) | |
if self.accessToken is not None: | |
authstr = "Bearer {}".format(self.accessToken) | |
headers[b"Authorization"] = authstr.encode(self.encoding) | |
return client.getPage(url, headers=headers, **kwargs) | |
def _getChanges(self): | |
self.lastPoll = time.time() | |
log.msg("BitbucketPullrequestPoller: polling " | |
"Bitbucket repository %s/%s, branch: %s" % (self.owner, self.slug, self.branch)) | |
url = "https://bitbucket.org/api/2.0/repositories/%s/%s/pullrequests" % ( | |
self.owner, self.slug) | |
url = url.encode('utf-8') | |
return self.getPage(url, timeout=self.pollInterval) | |
@defer.inlineCallbacks | |
def _processChanges(self, page): | |
result = json.loads(page, encoding=self.encoding) | |
for pr in result['values']: | |
branch = pr['source']['branch']['name'] | |
nr = int(pr['id']) | |
# Note that this is a short hash. The full length hash can be accessed via the | |
# commit api resource but we want to avoid requesting multiple pages as long as | |
# we are not sure that the pull request is new or updated. | |
revision = pr['source']['commit']['hash'] | |
# check branch | |
if not self.branch or branch in self.branch: | |
current = yield self._getCurrentRev(nr) | |
# compare _short_ hashes to check if the PR has been updated | |
if not current or current[0:12] != revision[0:12]: | |
# parse pull request api page (required for the filter) | |
page = yield self.getPage(str(pr['links']['self']['href'])) | |
pr_json = json.loads(page, encoding=self.encoding) | |
# filter pull requests by user function | |
if not self.pullrequest_filter(pr_json): | |
log.msg('pull request does not match filter') | |
continue | |
# access additional information | |
author = pr['author']['display_name'] | |
prlink = pr['links']['html']['href'] | |
# Get time updated time. Note that the timezone offset is | |
# ignored. | |
if self.useTimestamps: | |
updated = datetime.strptime( | |
pr['updated_on'].split('.')[0], | |
'%Y-%m-%dT%H:%M:%S') | |
else: | |
updated = epoch2datetime(reactor.seconds()) | |
title = pr['title'] | |
# parse commit api page | |
page = yield self.getPage(str(pr['source']['commit']['links']['self']['href'])) | |
commit_json = json.loads(page, encoding=self.encoding) | |
# use the full-length hash from now on | |
revision = commit_json['hash'] | |
revlink = commit_json['links']['html']['href'] | |
# parse repo api page | |
page = yield self.getPage(str(pr['source']['repository']['links']['self']['href'])) | |
repo_json = json.loads(page, encoding=self.encoding) | |
repo = repo_json['links']['html']['href'] | |
# update database | |
yield self._setCurrentRev(nr, revision) | |
# emit the change | |
yield self.master.data.updates.addChange( | |
author=bytes2unicode(author), | |
revision=bytes2unicode(revision), | |
revlink=bytes2unicode(revlink), | |
comments=u'pull-request #%d: %s\n%s' % ( | |
nr, title, prlink), | |
when_timestamp=datetime2epoch(updated), | |
branch=bytes2unicode(branch), | |
category=self.category, | |
project=self.project, | |
repository=bytes2unicode(repo), | |
src=u'bitbucket', | |
) | |
def _processChangesFailure(self, f): | |
log.msg('BitbucketPullrequestPoller: json api poll failed') | |
log.err(f) | |
# eat the failure to continue along the deferred chain - we still want | |
# to catch up | |
return None | |
def _getCurrentRev(self, pr_id): | |
# Return a deferred datetime object for the given pull request number | |
# or None. | |
d = self._getStateObjectId() | |
@d.addCallback | |
def oid_callback(oid): | |
current = self.master.db.state.getState( | |
oid, 'pull_request%d' % pr_id, None) | |
@current.addCallback | |
def result_callback(result): | |
return result | |
return current | |
return d | |
def _setCurrentRev(self, pr_id, rev): | |
# Set the datetime entry for a specified pull request. | |
d = self._getStateObjectId() | |
@d.addCallback | |
def oid_callback(oid): | |
return self.master.db.state.setState(oid, 'pull_request%d' % pr_id, rev) | |
return d | |
def _getStateObjectId(self): | |
# Return a deferred for object id in state db. | |
return self.master.db.state.getObjectId( | |
'%s/%s#%s' % (self.owner, self.slug, self.branch), self.db_class_name) |
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