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595 lines
24 KiB
595 lines
24 KiB
from abc import abstractmethod
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from enum import Enum, unique
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import apt_pkg
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import os
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import time
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from urllib.parse import quote
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from hints import Hint, split_into_one_hint_per_package
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from britney_util import ensuredir
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@unique
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class PolicyVerdict(Enum):
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""""""
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"""
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The migration item passed the policy.
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"""
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PASS = 1
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"""
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The policy was completely overruled by a hint.
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"""
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PASS_HINTED = 2
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"""
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The migration item did not pass the policy, but the failure is believed
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to be temporary
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"""
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REJECTED_TEMPORARILY = 3
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"""
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The migration item did not pass the policy and the failure is believed
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to be uncorrectable (i.e. a hint or a new version is needed)
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"""
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REJECTED_PERMANENTLY = 4
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@property
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def is_rejected(self):
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return True if self.name.startswith('REJECTED') else False
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class BasePolicy(object):
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def __init__(self, policy_id, options, applicable_suites):
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"""The BasePolicy constructor
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:param policy_id An string identifying the policy. It will
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determine the key used for the excuses.yaml etc.
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:param options The options member of Britney with all the
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config options.
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:param applicable_suites A set of suite names where this
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policy applies.
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"""
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self.policy_id = policy_id
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self.options = options
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self.applicable_suites = applicable_suites
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self.hints = None
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# FIXME: use a proper logging framework
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def log(self, msg, type="I"):
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"""Print info messages according to verbosity level
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An easy-and-simple log method which prints messages to the standard
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output. The type parameter controls the urgency of the message, and
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can be equal to `I' for `Information', `W' for `Warning' and `E' for
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`Error'. Warnings and errors are always printed, and information is
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printed only if verbose logging is enabled.
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"""
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if self.options.verbose or type in ("E", "W"):
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print("%s: [%s] - %s" % (type, time.asctime(), msg))
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def register_hints(self, hint_parser):
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"""Register new hints that this policy accepts
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:param hint_parser: An instance of HintParser (see HintParser.register_hint_type)
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"""
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pass
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def initialise(self, britney):
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"""Called once to make the policy initialise any data structures
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This is useful for e.g. parsing files or other "heavy do-once" work.
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:param britney This is the instance of the "Britney" class.
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"""
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pass
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def save_state(self, britney):
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"""Called once at the end of the run to make the policy save any persistent data
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Note this will *not* be called for "dry-runs" as such runs should not change
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the state.
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:param britney This is the instance of the "Britney" class.
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"""
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pass
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def apply_policy(self, general_policy_info, suite, source_name, source_data_tdist, source_data_srcdist, excuse):
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if self.policy_id not in general_policy_info:
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general_policy_info[self.policy_id] = pinfo = {}
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else:
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pinfo = general_policy_info[self.policy_id]
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return self.apply_policy_impl(pinfo, suite, source_name, source_data_tdist, source_data_srcdist, excuse)
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@abstractmethod
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def apply_policy_impl(self, policy_info, suite, source_name, source_data_tdist, source_data_srcdist, excuse):
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"""Apply a policy on a given source migration
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Britney will call this method on a given source package, when
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Britney is considering to migrate it from the given source
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suite to the target suite. The policy will then evaluate the
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the migration and then return a verdict.
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:param policy_info A dictionary of all policy results. The
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policy can add a value stored in a key related to its name.
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(e.g. policy_info['age'] = {...}). This will go directly into
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the "excuses.yaml" output.
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:param suite The name of the suite from where the source is
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migrating from.
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:param source_data_tdist Information about the source package
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in the target distribution (e.g. "testing"). This is the
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data structure in Britney.sources['testing'][source_name]
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:param source_data_srcdist Information about the source
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package in the source distribution (e.g. "unstable" or "tpu").
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This is the data structure in
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Britney.sources[suite][source_name]
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:return A Policy Verdict (e.g. PolicyVerdict.PASS)
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"""
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pass
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class SimplePolicyHint(Hint):
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def __init__(self, user, hint_type, policy_parameter, packages):
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super().__init__(user, hint_type, packages)
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self._policy_parameter = policy_parameter
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def __eq__(self, other):
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if self.type != other.type or self._policy_parameter != other._policy_parameter:
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return False
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return super.__eq__(other)
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def str(self):
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return '%s %s %s' % (self._type, str(self._policy_parameter), ' '.join(x.name for x in self._packages))
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class AgeDayHint(SimplePolicyHint):
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@property
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def days(self):
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return self._policy_parameter
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class IgnoreRCBugHint(SimplePolicyHint):
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@property
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def ignored_rcbugs(self):
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return self._policy_parameter
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def simple_policy_hint_parser_function(class_name, converter):
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def f(hints, who, hint_name, policy_parameter, *args):
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for package in args:
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hints.add_hint(class_name(who, hint_name, converter(policy_parameter), package))
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return f
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class AgePolicy(BasePolicy):
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"""Configurable Aging policy for source migrations
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The AgePolicy will let packages stay in the source suite for a pre-defined
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amount of days before letting migrate (based on their urgency, if any).
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The AgePolicy's decision is influenced by the following:
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State files:
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* ${STATE_DIR}/age-policy-urgencies: File containing urgencies for source
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packages. Note that urgencies are "sticky" and the most "urgent" urgency
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will be used (i.e. the one with lowest age-requirements).
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- This file needs to be updated externally, if the policy should take
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urgencies into consideration. If empty (or not updated), the policy
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will simply use the default urgency (see the "Config" section below)
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- In Debian, these values are taken from the .changes file, but that is
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not a requirement for Britney.
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* ${STATE_DIR}/age-policy-dates: File containing the age of all source
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packages.
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- The policy will automatically update this file.
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Config:
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* DEFAULT_URGENCY: Name of the urgency used for packages without an urgency
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(or for unknown urgencies). Will also be used to set the "minimum"
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aging requirements for packages not in the target suite.
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* MINDAYS_<URGENCY>: The age-requirements in days for packages with the
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given urgency.
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- Commonly used urgencies are: low, medium, high, emergency, critical
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Hints:
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* urgent <source>/<version>: Disregard the age requirements for a given
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source/version.
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* age-days X <source>/<version>: Set the age requirements for a given
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source/version to X days. Note that X can exceed the highest
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age-requirement normally given.
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"""
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def __init__(self, options, mindays):
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super().__init__('age', options, {'unstable'})
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self._min_days = mindays
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if options.default_urgency not in mindays:
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raise ValueError("Missing age-requirement for default urgency (MINDAYS_%s)" % options.default_urgency)
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self._min_days_default = mindays[options.default_urgency]
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# britney's "day" begins at 3pm
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self._date_now = int(((time.time() / (60*60)) - 15) / 24)
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self._dates = {}
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self._urgencies = {}
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def register_hints(self, hint_parser):
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hint_parser.register_hint_type('age-days', simple_policy_hint_parser_function(AgeDayHint, int), min_args=2)
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hint_parser.register_hint_type('urgent', split_into_one_hint_per_package)
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def initialise(self, britney):
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super().initialise(britney)
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self._read_dates_file()
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self._read_urgencies_file(britney)
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def save_state(self, britney):
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super().save_state(britney)
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self._write_dates_file()
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def apply_policy_impl(self, age_info, suite, source_name, source_data_tdist, source_data_srcdist, excuse):
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# retrieve the urgency for the upload, ignoring it if this is a NEW package (not present in testing)
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urgency = self._urgencies.get(source_name, self.options.default_urgency)
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if urgency not in self._min_days:
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age_info['unknown-urgency'] = urgency
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urgency = self.options.default_urgency
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if not source_data_tdist:
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if self._min_days[urgency] < self._min_days_default:
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age_info['urgency-reduced'] = {
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'from': urgency,
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'to': self.options.default_urgency,
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}
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urgency = self.options.default_urgency
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if source_name not in self._dates:
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self._dates[source_name] = (source_data_srcdist.version, self._date_now)
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elif self._dates[source_name][0] != source_data_srcdist.version:
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self._dates[source_name] = (source_data_srcdist.version, self._date_now)
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days_old = self._date_now - self._dates[source_name][1]
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min_days = self._min_days[urgency]
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age_info['age-requirement'] = min_days
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age_info['current-age'] = days_old
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for age_days_hint in self.hints.search('age-days', package=source_name,
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version=source_data_srcdist.version):
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new_req = age_days_hint.days
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age_info['age-requirement-reduced'] = {
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'new-requirement': new_req,
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'changed-by': age_days_hint.user
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}
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min_days = new_req
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res = PolicyVerdict.PASS
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if days_old < min_days:
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urgent_hints = self.hints.search('urgent', package=source_name,
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version=source_data_srcdist.version)
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if urgent_hints:
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age_info['age-requirement-reduced'] = {
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'new-requirement': 0,
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'changed-by': urgent_hints[0].user
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}
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res = PolicyVerdict.PASS_HINTED
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else:
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res = PolicyVerdict.REJECTED_TEMPORARILY
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# update excuse
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age_hint = age_info.get('age-requirement-reduced', None)
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age_min_req = age_info['age-requirement']
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if age_hint:
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new_req = age_hint['new-requirement']
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who = age_hint['changed-by']
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if new_req:
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excuse.addhtml("Overriding age needed from %d days to %d by %s" % (
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age_min_req, new_req, who))
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else:
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excuse.addhtml("Too young, but urgency pushed by %s" % who)
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excuse.setdaysold(age_info['current-age'], age_min_req)
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return res
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def _read_dates_file(self):
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"""Parse the dates file"""
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dates = self._dates
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fallback_filename = os.path.join(self.options.testing, 'Dates')
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using_new_name = False
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try:
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filename = os.path.join(self.options.state_dir, 'age-policy-dates')
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if not os.path.exists(filename) and os.path.exists(fallback_filename):
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filename = fallback_filename
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else:
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using_new_name = True
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except AttributeError:
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if os.path.exists(fallback_filename):
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filename = fallback_filename
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else:
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raise RuntimeError("Please set STATE_DIR in the britney configuration")
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try:
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with open(filename, encoding='utf-8') as fd:
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for line in fd:
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# <source> <version> <date>
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l = line.split()
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if len(l) != 3:
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continue
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try:
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dates[l[0]] = (l[1], int(l[2]))
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except ValueError:
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pass
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except FileNotFoundError:
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if not using_new_name:
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# If we using the legacy name, then just give up
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raise
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self.log("%s does not appear to exist. Creating it" % filename)
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with open(filename, mode='wx', encoding='utf-8'):
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pass
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def _read_urgencies_file(self, britney):
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urgencies = self._urgencies
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min_days_default = self._min_days_default
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fallback_filename = os.path.join(self.options.testing, 'Urgency')
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try:
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filename = os.path.join(self.options.state_dir, 'age-policy-urgencies')
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if not os.path.exists(filename) and os.path.exists(fallback_filename):
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filename = fallback_filename
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except AttributeError:
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filename = fallback_filename
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if not os.path.exists(filename):
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self.log("%s missing; using default for all packages" % filename)
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return
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with open(filename, errors='surrogateescape', encoding='ascii') as fd:
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for line in fd:
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# <source> <version> <urgency>
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l = line.split()
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if len(l) != 3:
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continue
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# read the minimum days associated with the urgencies
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urgency_old = urgencies.get(l[0], None)
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mindays_old = self._min_days.get(urgency_old, 1000)
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mindays_new = self._min_days.get(l[2], min_days_default)
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# if the new urgency is lower (so the min days are higher), do nothing
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if mindays_old <= mindays_new:
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continue
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# if the package exists in testing and it is more recent, do nothing
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tsrcv = britney.sources['testing'].get(l[0], None)
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if tsrcv and apt_pkg.version_compare(tsrcv.version, l[1]) >= 0:
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continue
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# if the package doesn't exist in unstable or it is older, do nothing
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usrcv = britney.sources['unstable'].get(l[0], None)
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if not usrcv or apt_pkg.version_compare(usrcv.version, l[1]) < 0:
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continue
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# update the urgency for the package
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urgencies[l[0]] = l[2]
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def _write_dates_file(self):
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dates = self._dates
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try:
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directory = self.options.state_dir
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basename = 'age-policy-dates'
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old_file = os.path.join(self.options.testing, 'Dates')
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except AttributeError:
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directory = self.options.testing
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basename = 'Dates'
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old_file = None
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filename = os.path.join(directory, basename)
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ensuredir(directory)
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filename_tmp = os.path.join(directory, '%s_new' % basename)
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with open(filename_tmp, 'w', encoding='utf-8') as fd:
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for pkg in sorted(dates):
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version, date = dates[pkg]
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fd.write("%s %s %d\n" % (pkg, version, date))
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os.rename(filename_tmp, filename)
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if old_file is not None and os.path.exists(old_file):
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self.log("Removing old age-policy-dates file %s" % old_file)
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os.unlink(old_file)
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class RCBugPolicy(BasePolicy):
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"""RC bug regression policy for source migrations
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The RCBugPolicy will read provided list of RC bugs and block any
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source upload that would introduce a *new* RC bug in the target
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suite.
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The RCBugPolicy's decision is influenced by the following:
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State files:
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* ${STATE_DIR}/rc-bugs-unstable: File containing RC bugs for packages in
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the source suite.
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- This file needs to be updated externally.
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* ${STATE_DIR}/rc-bugs-testing: File containing RC bugs for packages in
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the target suite.
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- This file needs to be updated externally.
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"""
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def __init__(self, options):
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super().__init__('rc-bugs', options, {'unstable'})
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self._bugs = {}
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def register_hints(self, hint_parser):
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f = simple_policy_hint_parser_function(IgnoreRCBugHint, lambda x: frozenset(x.split(',')))
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hint_parser.register_hint_type('ignore-rc-bugs',
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f,
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min_args=2)
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def initialise(self, britney):
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super().initialise(britney)
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fallback_unstable = os.path.join(self.options.unstable, 'BugsV')
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fallback_testing = os.path.join(self.options.testing, 'BugsV')
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try:
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filename_unstable = os.path.join(self.options.state_dir, 'rc-bugs-unstable')
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filename_testing = os.path.join(self.options.state_dir, 'rc-bugs-testing')
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if not os.path.exists(filename_unstable) and not os.path.exists(filename_testing) and \
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os.path.exists(fallback_unstable) and os.path.exists(fallback_testing):
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filename_unstable = fallback_unstable
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filename_testing = fallback_testing
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except AttributeError:
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filename_unstable = fallback_unstable
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filename_testing = fallback_testing
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self._bugs['unstable'] = self._read_bugs(filename_unstable)
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self._bugs['testing'] = self._read_bugs(filename_testing)
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def apply_policy_impl(self, rcbugs_info, suite, source_name, source_data_tdist, source_data_srcdist, excuse):
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bugs_t = set()
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bugs_u = set()
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for src_key in (source_name, 'src:%s' % source_name):
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if source_data_tdist and src_key in self._bugs['testing']:
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bugs_t.update(self._bugs['testing'][src_key])
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if src_key in self._bugs['unstable']:
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bugs_u.update(self._bugs['unstable'][src_key])
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for pkg, _, _ in source_data_srcdist.binaries:
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if pkg in self._bugs['unstable']:
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bugs_u |= self._bugs['unstable'][pkg]
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if source_data_tdist:
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for pkg, _, _ in source_data_tdist.binaries:
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if pkg in self._bugs['testing']:
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bugs_t |= self._bugs['testing'][pkg]
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# If a package is not in testing, it has no RC bugs per
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# definition. Unfortunately, it seems that the live-data is
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# not always accurate (e.g. live-2011-12-13 suggests that
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# obdgpslogger had the same bug in testing and unstable,
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# but obdgpslogger was not in testing at that time).
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# - For the curious, obdgpslogger was removed on that day
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# and the BTS probably had not caught up with that fact.
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# (https://tracker.debian.org/news/415935)
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assert not bugs_t or source_data_tdist, "%s had bugs in testing but is not in testing" % source_name
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success_verdict = PolicyVerdict.PASS
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for ignore_hint in self.hints.search('ignore-rc-bugs', package=source_name,
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version=source_data_srcdist.version):
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ignored_bugs = ignore_hint.ignored_rcbugs
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# Only handle one hint for now
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if 'ignored-bugs' in rcbugs_info:
|
|
self.log("Ignoring ignore-rc-bugs hint from %s on %s due to another hint from %s" % (
|
|
ignore_hint.user, source_name, rcbugs_info['ignored-bugs']['issued-by']
|
|
))
|
|
continue
|
|
if not ignored_bugs.isdisjoint(bugs_u):
|
|
bugs_u -= ignored_bugs
|
|
rcbugs_info['ignored-bugs'] = {
|
|
'bugs': sorted(ignored_bugs),
|
|
'issued-by': ignore_hint.user
|
|
}
|
|
success_verdict = PolicyVerdict.PASS_HINTED
|
|
else:
|
|
self.log("Ignoring ignore-rc-bugs hint from %s on %s as none of %s affect the package" % (
|
|
ignore_hint.user, source_name, str(ignored_bugs)
|
|
))
|
|
|
|
rcbugs_info['shared-bugs'] = sorted(bugs_u & bugs_t)
|
|
rcbugs_info['unique-source-bugs'] = sorted(bugs_u - bugs_t)
|
|
rcbugs_info['unique-target-bugs'] = sorted(bugs_t - bugs_u)
|
|
|
|
# update excuse
|
|
new_bugs = rcbugs_info['unique-source-bugs']
|
|
old_bugs = rcbugs_info['unique-target-bugs']
|
|
excuse.setbugs(old_bugs, new_bugs)
|
|
if new_bugs:
|
|
excuse.addhtml("%s <a href=\"https://bugs.debian.org/cgi-bin/pkgreport.cgi?" \
|
|
"src=%s&sev-inc=critical&sev-inc=grave&sev-inc=serious\" " \
|
|
"target=\"_blank\">has new bugs</a>!" % (source_name, quote(source_name)))
|
|
excuse.addhtml("Updating %s introduces new bugs: %s" % (source_name, ", ".join(
|
|
["<a href=\"https://bugs.debian.org/%s\">#%s</a>" % (quote(a), a) for a in new_bugs])))
|
|
|
|
if old_bugs:
|
|
excuse.addhtml("Updating %s fixes old bugs: %s" % (source_name, ", ".join(
|
|
["<a href=\"https://bugs.debian.org/%s\">#%s</a>" % (quote(a), a) for a in old_bugs])))
|
|
if new_bugs and len(old_bugs) > len(new_bugs):
|
|
excuse.addhtml("%s introduces new bugs, so still ignored (even "
|
|
"though it fixes more than it introduces, whine at debian-release)" % source_name)
|
|
|
|
if not bugs_u or bugs_u <= bugs_t:
|
|
return success_verdict
|
|
return PolicyVerdict.REJECTED_PERMANENTLY
|
|
|
|
def _read_bugs(self, filename):
|
|
"""Read the release critical bug summary from the specified file
|
|
|
|
The file contains rows with the format:
|
|
|
|
<package-name> <bug number>[,<bug number>...]
|
|
|
|
The method returns a dictionary where the key is the binary package
|
|
name and the value is the list of open RC bugs for it.
|
|
"""
|
|
bugs = {}
|
|
if not os.path.exists(filename):
|
|
self.log("%s missing; skipping bug-based processing" % filename)
|
|
return bugs
|
|
|
|
self.log("Loading RC bugs data from %s" % filename)
|
|
for line in open(filename, encoding='ascii'):
|
|
l = line.split()
|
|
if len(l) != 2:
|
|
self.log("Malformed line found in line %s" % (line), type='W')
|
|
continue
|
|
pkg = l[0]
|
|
if pkg not in bugs:
|
|
bugs[pkg] = set()
|
|
bugs[pkg].update(l[1].split(","))
|
|
return bugs
|
|
|
|
|
|
class LPBlockBugPolicy(BasePolicy):
|
|
"""block-proposed Launchpad bug policy for source migrations
|
|
|
|
This policy will read an user-supplied "Blocks" file from the unstable
|
|
directory (provided by an external script) with rows of the following
|
|
format:
|
|
|
|
<source-name> <bug> <date>
|
|
|
|
The dates are expressed as the number of seconds from the Unix epoch
|
|
(1970-01-01 00:00:00 UTC).
|
|
"""
|
|
def __init__(self, options):
|
|
super().__init__('block-bugs', options, {'unstable'})
|
|
|
|
def initialise(self, britney):
|
|
super().initialise(britney)
|
|
self.blocks = {} # srcpkg -> [(bug, date), ...]
|
|
|
|
filename = os.path.join(self.options.unstable, "Blocks")
|
|
self.log("Loading user-supplied block data from %s" % filename)
|
|
for line in open(filename):
|
|
l = line.split()
|
|
if len(l) != 3:
|
|
self.log("Blocks, ignoring malformed line %s" % line, type='W')
|
|
continue
|
|
try:
|
|
self.blocks.setdefault(l[0], [])
|
|
self.blocks[l[0]].append((l[1], int(l[2])))
|
|
except ValueError:
|
|
self.log("Blocks, unable to parse \"%s\"" % line, type='E')
|
|
|
|
def apply_policy_impl(self, block_bugs_info, suite, source_name, source_data_tdist, source_data_srcdist, excuse):
|
|
try:
|
|
blocks = self.blocks[source_name]
|
|
except KeyError:
|
|
return PolicyVerdict.PASS
|
|
|
|
for bug, date in blocks:
|
|
block_bugs_info[bug] = date
|
|
excuse.addhtml("Not touching package as requested in <a href=\"https://launchpad.net/bugs/%s\">bug %s</a> on %s" %
|
|
(bug, bug, time.asctime(time.gmtime(date))))
|
|
excuse.addreason('block')
|
|
|
|
return PolicyVerdict.REJECTED_PERMANENTLY
|