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#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
import logging
from typing import Any, List, Optional
import attr
from synapse.config._base import Config, ConfigError
from synapse.types import JsonDict
logger = logging.getLogger(__name__)
@attr.s(slots=True, frozen=True, auto_attribs=True)
class RetentionPurgeJob:
"""Object describing the configuration of the manhole"""
interval: int
shortest_max_lifetime: Optional[int]
longest_max_lifetime: Optional[int]
class RetentionConfig(Config):
section = "retention"
def read_config(self, config: JsonDict, **kwargs: Any) -> None:
retention_config = config.get("retention")
if retention_config is None:
retention_config = {}
self.retention_enabled = retention_config.get("enabled", False)
retention_default_policy = retention_config.get("default_policy")
if retention_default_policy is not None:
self.retention_default_min_lifetime = retention_default_policy.get(
"min_lifetime"
)
if self.retention_default_min_lifetime is not None:
self.retention_default_min_lifetime = self.parse_duration(
self.retention_default_min_lifetime
)
self.retention_default_max_lifetime = retention_default_policy.get(
"max_lifetime"
)
if self.retention_default_max_lifetime is not None:
self.retention_default_max_lifetime = self.parse_duration(
self.retention_default_max_lifetime
)
if (
self.retention_default_min_lifetime is not None
and self.retention_default_max_lifetime is not None
and (
self.retention_default_min_lifetime
> self.retention_default_max_lifetime
)
):
raise ConfigError(
"The default retention policy's 'min_lifetime' can not be greater"
" than its 'max_lifetime'"
)
else:
self.retention_default_min_lifetime = None
self.retention_default_max_lifetime = None
if self.retention_enabled:
logger.info(
"Message retention policies support enabled with the following default"
" policy: min_lifetime = %s ; max_lifetime = %s",
self.retention_default_min_lifetime,
self.retention_default_max_lifetime,
)
self.retention_allowed_lifetime_min = retention_config.get(
"allowed_lifetime_min"
)
if self.retention_allowed_lifetime_min is not None:
self.retention_allowed_lifetime_min = self.parse_duration(
self.retention_allowed_lifetime_min
)
self.retention_allowed_lifetime_max = retention_config.get(
"allowed_lifetime_max"
)
if self.retention_allowed_lifetime_max is not None:
self.retention_allowed_lifetime_max = self.parse_duration(
self.retention_allowed_lifetime_max
)
if (
self.retention_allowed_lifetime_min is not None
and self.retention_allowed_lifetime_max is not None
and self.retention_allowed_lifetime_min
> self.retention_allowed_lifetime_max
):
raise ConfigError(
"Invalid retention policy limits: 'allowed_lifetime_min' can not be"
" greater than 'allowed_lifetime_max'"
)
self.retention_purge_jobs: List[RetentionPurgeJob] = []
for purge_job_config in retention_config.get("purge_jobs", []):
interval_config = purge_job_config.get("interval")
if interval_config is None:
raise ConfigError(
"A retention policy's purge jobs configuration must have the"
" 'interval' key set."
)
interval = self.parse_duration(interval_config)
shortest_max_lifetime = purge_job_config.get("shortest_max_lifetime")
if shortest_max_lifetime is not None:
shortest_max_lifetime = self.parse_duration(shortest_max_lifetime)
longest_max_lifetime = purge_job_config.get("longest_max_lifetime")
if longest_max_lifetime is not None:
longest_max_lifetime = self.parse_duration(longest_max_lifetime)
if (
shortest_max_lifetime is not None
and longest_max_lifetime is not None
and shortest_max_lifetime > longest_max_lifetime
):
raise ConfigError(
"A retention policy's purge jobs configuration's"
" 'shortest_max_lifetime' value can not be greater than its"
" 'longest_max_lifetime' value."
)
self.retention_purge_jobs.append(
RetentionPurgeJob(interval, shortest_max_lifetime, longest_max_lifetime)
)
if not self.retention_purge_jobs:
self.retention_purge_jobs = [
RetentionPurgeJob(self.parse_duration("1d"), None, None)
]
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