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import datetime
import os
from typing import Dict, List, Optional, Tuple, Union
from uaclient import apt, exceptions, messages, system
from uaclient.api.api import APIEndpoint
from uaclient.api.data_types import AdditionalInfo
from uaclient.api.exceptions import UnattendedUpgradesError
from uaclient.apt import get_apt_config_keys, get_apt_config_values
from uaclient.config import UAConfig
from uaclient.data_types import (
BoolDataValue,
DataObject,
DatetimeDataValue,
Field,
IntDataValue,
StringDataValue,
data_list,
)
UNATTENDED_UPGRADES_CONFIG_KEYS = [
"APT::Periodic::Enable",
"APT::Periodic::Update-Package-Lists",
"APT::Periodic::Unattended-Upgrade",
"Unattended-Upgrade::Allowed-Origins",
]
UNATTENDED_UPGRADES_STAMP_PATH = "/var/lib/apt/periodic/upgrade-stamp"
class UnattendedUpgradesDisabledReason(DataObject):
fields = [
Field("msg", StringDataValue, doc="Human readable reason"),
Field("code", StringDataValue, doc="Reason code"),
]
def __init__(self, msg: str, code: str):
self.msg = msg
self.code = code
class UnattendedUpgradesStatusResult(DataObject, AdditionalInfo):
fields = [
Field(
"systemd_apt_timer_enabled",
BoolDataValue,
doc="Indicate if the ``apt-daily.timer`` jobs are enabled",
),
Field(
"apt_periodic_job_enabled",
BoolDataValue,
doc=(
"Indicate if the ``APT::Periodic::Enabled`` configuration is"
" turned off"
),
),
Field(
"package_lists_refresh_frequency_days",
IntDataValue,
doc=(
"The value of the ``APT::Periodic::Update-Package-Lists``"
" configuration"
),
),
Field(
"unattended_upgrades_frequency_days",
IntDataValue,
doc=(
"The value of the ``APT::Periodic::Unattended-Upgrade``"
" configuration"
),
),
Field(
"unattended_upgrades_allowed_origins",
data_list(StringDataValue),
doc=(
"The value of the ``Unattended-Upgrade::Allowed-Origins``"
" configuration"
),
),
Field(
"unattended_upgrades_running",
BoolDataValue,
doc=(
"Indicate if the ``unattended-upgrade`` service is correctly"
" configured and running"
),
),
Field(
"unattended_upgrades_disabled_reason",
UnattendedUpgradesDisabledReason,
required=False,
doc=(
"Object that explains why ``unattended-upgrades`` is not"
" running -- if the application is running, the object will be"
" null"
),
),
Field(
"unattended_upgrades_last_run",
DatetimeDataValue,
required=False,
doc="The last time ``unattended-upgrades`` ran",
),
]
def __init__(
self,
*,
systemd_apt_timer_enabled: bool,
apt_periodic_job_enabled: bool,
package_lists_refresh_frequency_days: int,
unattended_upgrades_frequency_days: int,
unattended_upgrades_allowed_origins: List[str],
unattended_upgrades_running: bool,
unattended_upgrades_disabled_reason: Optional[
UnattendedUpgradesDisabledReason
],
unattended_upgrades_last_run: Optional[datetime.datetime]
):
self.systemd_apt_timer_enabled = systemd_apt_timer_enabled
self.apt_periodic_job_enabled = apt_periodic_job_enabled
self.package_lists_refresh_frequency_days = (
package_lists_refresh_frequency_days
)
self.unattended_upgrades_frequency_days = (
unattended_upgrades_frequency_days
)
self.unattended_upgrades_allowed_origins = (
unattended_upgrades_allowed_origins
)
self.unattended_upgrades_running = unattended_upgrades_running
self.unattended_upgrades_disabled_reason = (
unattended_upgrades_disabled_reason
)
self.unattended_upgrades_last_run = unattended_upgrades_last_run
def _get_apt_daily_job_status() -> bool:
try:
apt_daily_job_enabled = system.is_systemd_unit_active(
"apt-daily.timer"
)
apt_daily_upgrade_job_enabled = system.is_systemd_unit_active(
"apt-daily-upgrade.timer"
)
systemd_apt_timer_enabled = (
apt_daily_job_enabled and apt_daily_upgrade_job_enabled
)
except exceptions.ProcessExecutionError as e:
raise UnattendedUpgradesError(error_msg=str(e))
return systemd_apt_timer_enabled
def _is_unattended_upgrades_running(
systemd_apt_timer_enabled: bool,
unattended_upgrades_cfg: Dict[str, Union[str, List[str]]],
) -> Tuple[bool, Optional[messages.NamedMessage]]:
if not systemd_apt_timer_enabled:
return (False, messages.UNATTENDED_UPGRADES_SYSTEMD_JOB_DISABLED)
for key, value in unattended_upgrades_cfg.items():
if not value:
return (
False,
messages.UNATTENDED_UPGRADES_CFG_LIST_VALUE_EMPTY.format(
cfg_name=key
),
)
if isinstance(value, str) and value == "0":
return (
False,
messages.UNATTENDED_UPGRADES_CFG_VALUE_TURNED_OFF.format(
cfg_name=key
),
)
return (True, None)
def _get_unattended_upgrades_last_run() -> Optional[datetime.datetime]:
try:
creation_epoch = os.path.getctime(UNATTENDED_UPGRADES_STAMP_PATH)
except FileNotFoundError:
return None
return datetime.datetime.fromtimestamp(creation_epoch)
def status() -> UnattendedUpgradesStatusResult:
return _status(UAConfig())
def _status(cfg: UAConfig) -> UnattendedUpgradesStatusResult:
"""
This endpoint returns the status around ``unattended-upgrades``. The focus
of the endpoint is to verify if the application is running and how it is
configured on the machine.
.. important::
For this endpoint, we deliver a unique key under ``meta`` called
``raw_config``. This field contains all related ``unattended-upgrades``
configurations, unparsed. This means that this field will maintain both
original name and values for those configurations.
"""
if not apt.is_installed("unattended-upgrades"):
return UnattendedUpgradesStatusResult(
systemd_apt_timer_enabled=False,
apt_periodic_job_enabled=False,
package_lists_refresh_frequency_days=0,
unattended_upgrades_frequency_days=0,
unattended_upgrades_allowed_origins=[],
unattended_upgrades_disabled_reason=UnattendedUpgradesDisabledReason( # noqa
msg=messages.UNATTENDED_UPGRADES_UNINSTALLED.msg,
code=messages.UNATTENDED_UPGRADES_UNINSTALLED.name,
),
unattended_upgrades_running=False,
unattended_upgrades_last_run=None,
)
systemd_apt_timer_enabled = _get_apt_daily_job_status()
unattended_upgrades_last_run = _get_unattended_upgrades_last_run()
unattended_upgrades_cfg = get_apt_config_values(
set(
UNATTENDED_UPGRADES_CONFIG_KEYS
+ get_apt_config_keys("Unattended-Upgrade")
)
)
# If that key is not present on the APT Config, we assume it
# that the config is "enabled", as by default this configuration
# will not be present in APT
unattended_upgrades_cfg["APT::Periodic::Enable"] = (
unattended_upgrades_cfg["APT::Periodic::Enable"] or "1"
)
(
unattended_upgrades_running,
disabled_reason,
) = _is_unattended_upgrades_running(
systemd_apt_timer_enabled, unattended_upgrades_cfg
)
if disabled_reason:
unattended_upgrades_disabled_reason = UnattendedUpgradesDisabledReason(
msg=disabled_reason.msg,
code=disabled_reason.name,
)
else:
unattended_upgrades_disabled_reason = None
unattended_upgrades_result = UnattendedUpgradesStatusResult(
systemd_apt_timer_enabled=systemd_apt_timer_enabled,
apt_periodic_job_enabled=str(
unattended_upgrades_cfg.get("APT::Periodic::Enable", "")
)
== "1",
package_lists_refresh_frequency_days=int(
unattended_upgrades_cfg.get( # type: ignore
"APT::Periodic::Update-Package-Lists", 0
)
),
unattended_upgrades_frequency_days=int(
unattended_upgrades_cfg.get( # type: ignore
"APT::Periodic::Unattended-Upgrade", 0
)
),
unattended_upgrades_allowed_origins=list(
unattended_upgrades_cfg.get("Unattended-Upgrade::Allowed-Origins")
or []
),
unattended_upgrades_disabled_reason=(
unattended_upgrades_disabled_reason
),
unattended_upgrades_running=unattended_upgrades_running,
unattended_upgrades_last_run=unattended_upgrades_last_run,
)
unattended_upgrades_result.meta = {"raw_config": unattended_upgrades_cfg}
return unattended_upgrades_result
endpoint = APIEndpoint(
version="v1",
name="UnattendedUpgradesStatus",
fn=_status,
options_cls=None,
)
_doc = {
"introduced_in": "27.14",
"requires_network": False,
"example_python": """
from uaclient.api.u.unattended_upgrades.status.v1 import status
result = status()
""",
"result_class": UnattendedUpgradesStatusResult,
"exceptions": [
(
UnattendedUpgradesError,
"Raised if we cannot run a necessary command to show the status of ``unattended-upgrades``", # noqa: E501
)
],
"example_cli": "pro api u.unattended_upgrades.status.v1",
"example_json": """
{
"apt_periodic_job_enabled": true,
"package_lists_refresh_frequency_days": 1,
"systemd_apt_timer_enabled": true,
"unattended_upgrades_allowed_origins": [
"${distro_id}:${distro_codename}",
"${distro_id}:${distro_codename}-security",
"${distro_id}ESMApps:${distro_codename}-apps-security",
"${distro_id}ESM:${distro_codename}-infra-security"
],
"unattended_upgrades_disabled_reason": null,
"unattended_upgrades_frequency_days": 1,
"unattended_upgrades_last_run": null,
"unattended_upgrades_running": true
}
""",
"extra": """
- Possible attributes in JSON ``meta`` field:
.. code-block:: json
{
"meta": {
"environment_vars": [],
"raw_config": {
"APT::Periodic::Enable": "1",
"APT::Periodic::Unattended-Upgrade": "1",
"APT::Periodic::Update-Package-Lists": "1",
"Unattended-Upgrade::Allowed-Origins": [
"${distro_id}:${distro_codename}",
"${distro_id}:${distro_codename}-security",
"${distro_id}ESMApps:${distro_codename}-apps-security",
"${distro_id}ESM:${distro_codename}-infra-security"
]
}
}
}
""",
"extra_indent": 2,
}