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# Copyright 2017 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 copy
import re
import time
from zuul.model import EventFilter, RefFilter
from zuul.model import Change, TriggerEvent
from zuul.driver.util import time_to_seconds
EMPTY_GIT_REF = '0' * 40 # git sha of all zeros, used during creates/deletes
class GerritChange(Change):
def __init__(self, project):
super(GerritChange, self).__init__(project)
self.approvals = []
class GerritTriggerEvent(TriggerEvent):
"""Incoming event from an external system."""
def __init__(self):
super(GerritTriggerEvent, self).__init__()
self.approvals = []
def __repr__(self):
ret = '<GerritTriggerEvent %s %s' % (self.type,
self.canonical_project_name)
if self.branch:
ret += " %s" % self.branch
if self.change_number:
ret += " %s,%s" % (self.change_number, self.patch_number)
if self.approvals:
ret += ' ' + ', '.join(
['%s:%s' % (a['type'], a['value']) for a in self.approvals])
ret += '>'
return ret
def isPatchsetCreated(self):
return 'patchset-created' == self.type
def isChangeAbandoned(self):
return 'change-abandoned' == self.type
class GerritApprovalFilter(object):
def __init__(self, required_approvals=[], reject_approvals=[]):
self._required_approvals = copy.deepcopy(required_approvals)
self.required_approvals = self._tidy_approvals(
self._required_approvals)
self._reject_approvals = copy.deepcopy(reject_approvals)
self.reject_approvals = self._tidy_approvals(self._reject_approvals)
def _tidy_approvals(self, approvals):
for a in approvals:
for k, v in a.items():
if k == 'username':
a['username'] = re.compile(v)
elif k == 'email':
a['email'] = re.compile(v)
elif k == 'newer-than':
a[k] = time_to_seconds(v)
elif k == 'older-than':
a[k] = time_to_seconds(v)
return approvals
def _match_approval_required_approval(self, rapproval, approval):
# Check if the required approval and approval match
if 'description' not in approval:
return False
now = time.time()
by = approval.get('by', {})
for k, v in rapproval.items():
if k == 'username':
if (not v.search(by.get('username', ''))):
return False
elif k == 'email':
if (not v.search(by.get('email', ''))):
return False
elif k == 'newer-than':
t = now - v
if (approval['grantedOn'] < t):
return False
elif k == 'older-than':
t = now - v
if (approval['grantedOn'] >= t):
return False
else:
if not isinstance(v, list):
v = [v]
if (approval['description'] != k or
int(approval['value']) not in v):
return False
return True
def matchesApprovals(self, change):
if self.required_approvals or self.reject_approvals:
if not hasattr(change, 'number'):
# Not a change, no reviews
return False
if self.required_approvals and not change.approvals:
# A change with no approvals can not match
return False
# TODO(jhesketh): If we wanted to optimise this slightly we could
# analyse both the REQUIRE and REJECT filters by looping over the
# approvals on the change and keeping track of what we have checked
# rather than needing to loop on the change approvals twice
return (self.matchesRequiredApprovals(change) and
self.matchesNoRejectApprovals(change))
def matchesRequiredApprovals(self, change):
# Check if any approvals match the requirements
for rapproval in self.required_approvals:
matches_rapproval = False
for approval in change.approvals:
if self._match_approval_required_approval(rapproval, approval):
# We have a matching approval so this requirement is
# fulfilled
matches_rapproval = True
break
if not matches_rapproval:
return False
return True
def matchesNoRejectApprovals(self, change):
# Check to make sure no approvals match a reject criteria
for rapproval in self.reject_approvals:
for approval in change.approvals:
if self._match_approval_required_approval(rapproval, approval):
# A reject approval has been matched, so we reject
# immediately
return False
# To get here no rejects can have been matched so we should be good to
# queue
return True
class GerritEventFilter(EventFilter, GerritApprovalFilter):
def __init__(self, trigger, types=[], branches=[], refs=[],
event_approvals={}, comments=[], emails=[], usernames=[],
required_approvals=[], reject_approvals=[],
ignore_deletes=True):
EventFilter.__init__(self, trigger)
GerritApprovalFilter.__init__(self,
required_approvals=required_approvals,
reject_approvals=reject_approvals)
self._types = types
self._branches = branches
self._refs = refs
self._comments = comments
self._emails = emails
self._usernames = usernames
self.types = [re.compile(x) for x in types]
self.branches = [re.compile(x) for x in branches]
self.refs = [re.compile(x) for x in refs]
self.comments = [re.compile(x) for x in comments]
self.emails = [re.compile(x) for x in emails]
self.usernames = [re.compile(x) for x in usernames]
self.event_approvals = event_approvals
self.ignore_deletes = ignore_deletes
def __repr__(self):
ret = '<GerritEventFilter'
if self._types:
ret += ' types: %s' % ', '.join(self._types)
if self._branches:
ret += ' branches: %s' % ', '.join(self._branches)
if self._refs:
ret += ' refs: %s' % ', '.join(self._refs)
if self.ignore_deletes:
ret += ' ignore_deletes: %s' % self.ignore_deletes
if self.event_approvals:
ret += ' event_approvals: %s' % ', '.join(
['%s:%s' % a for a in self.event_approvals.items()])
if self.required_approvals:
ret += ' required_approvals: %s' % ', '.join(
['%s' % a for a in self._required_approvals])
if self.reject_approvals:
ret += ' reject_approvals: %s' % ', '.join(
['%s' % a for a in self._reject_approvals])
if self._comments:
ret += ' comments: %s' % ', '.join(self._comments)
if self._emails:
ret += ' emails: %s' % ', '.join(self._emails)
if self._usernames:
ret += ' usernames: %s' % ', '.join(self._usernames)
ret += '>'
return ret
def matches(self, event, change):
# event types are ORed
matches_type = False
for etype in self.types:
if etype.match(event.type):
matches_type = True
if self.types and not matches_type:
return False
# branches are ORed
matches_branch = False
for branch in self.branches:
if branch.match(event.branch):
matches_branch = True
if self.branches and not matches_branch:
return False
# refs are ORed
matches_ref = False
if event.ref is not None:
for ref in self.refs:
if ref.match(event.ref):
matches_ref = True
if self.refs and not matches_ref:
return False
if self.ignore_deletes and event.newrev == EMPTY_GIT_REF:
# If the updated ref has an empty git sha (all 0s),
# then the ref is being deleted
return False
# comments are ORed
matches_comment_re = False
for comment_re in self.comments:
if (event.comment is not None and
comment_re.search(event.comment)):
matches_comment_re = True
if self.comments and not matches_comment_re:
return False
# We better have an account provided by Gerrit to do
# email filtering.
if event.account is not None:
account_email = event.account.get('email')
# emails are ORed
matches_email_re = False
for email_re in self.emails:
if (account_email is not None and
email_re.search(account_email)):
matches_email_re = True
if self.emails and not matches_email_re:
return False
# usernames are ORed
account_username = event.account.get('username')
matches_username_re = False
for username_re in self.usernames:
if (account_username is not None and
username_re.search(account_username)):
matches_username_re = True
if self.usernames and not matches_username_re:
return False
# approvals are ANDed
for category, value in self.event_approvals.items():
matches_approval = False
for eapp in event.approvals:
if (eapp['description'] == category and
int(eapp['value']) == int(value)):
matches_approval = True
if not matches_approval:
return False
# required approvals are ANDed (reject approvals are ORed)
if not self.matchesApprovals(change):
return False
return True
class GerritRefFilter(RefFilter, GerritApprovalFilter):
def __init__(self, connection_name, open=None, current_patchset=None,
statuses=[], required_approvals=[],
reject_approvals=[]):
RefFilter.__init__(self, connection_name)
GerritApprovalFilter.__init__(self,
required_approvals=required_approvals,
reject_approvals=reject_approvals)
self.open = open
self.current_patchset = current_patchset
self.statuses = statuses
def __repr__(self):
ret = '<GerritRefFilter'
ret += ' connection_name: %s' % self.connection_name
if self.open is not None:
ret += ' open: %s' % self.open
if self.current_patchset is not None:
ret += ' current-patchset: %s' % self.current_patchset
if self.statuses:
ret += ' statuses: %s' % ', '.join(self.statuses)
if self.required_approvals:
ret += (' required-approvals: %s' %
str(self.required_approvals))
if self.reject_approvals:
ret += (' reject-approvals: %s' %
str(self.reject_approvals))
ret += '>'
return ret
def matches(self, change):
if self.open is not None:
# if a "change" has no number, it's not a change, but a push
# and cannot possibly pass this test.
if hasattr(change, 'number'):
if self.open != change.open:
return False
else:
return False
if self.current_patchset is not None:
# if a "change" has no number, it's not a change, but a push
# and cannot possibly pass this test.
if hasattr(change, 'number'):
if self.current_patchset != change.is_current_patchset:
return False
else:
return False
if self.statuses:
if change.status not in self.statuses:
return False
# required approvals are ANDed (reject approvals are ORed)
if not self.matchesApprovals(change):
return False
return True
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