anonymousland-synapse/synapse/storage/push_rule.py
Mark Haines a9c9868957 Make adding push rules idempotent
Also remove the **kwargs from the add_push_rule method.

Fixes https://matrix.org/jira/browse/SYN-391
2016-02-16 15:53:38 +00:00

304 lines
9.9 KiB
Python

# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
#
# 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.
from ._base import SQLBaseStore
from synapse.util.caches.descriptors import cachedInlineCallbacks
from twisted.internet import defer
import logging
import simplejson as json
logger = logging.getLogger(__name__)
class PushRuleStore(SQLBaseStore):
@cachedInlineCallbacks()
def get_push_rules_for_user(self, user_id):
rows = yield self._simple_select_list(
table="push_rules",
keyvalues={
"user_name": user_id,
},
retcols=(
"user_name", "rule_id", "priority_class", "priority",
"conditions", "actions",
),
desc="get_push_rules_enabled_for_user",
)
rows.sort(
key=lambda row: (-int(row["priority_class"]), -int(row["priority"]))
)
defer.returnValue(rows)
@cachedInlineCallbacks()
def get_push_rules_enabled_for_user(self, user_id):
results = yield self._simple_select_list(
table="push_rules_enable",
keyvalues={
'user_name': user_id
},
retcols=(
"user_name", "rule_id", "enabled",
),
desc="get_push_rules_enabled_for_user",
)
defer.returnValue({
r['rule_id']: False if r['enabled'] == 0 else True for r in results
})
@defer.inlineCallbacks
def bulk_get_push_rules(self, user_ids):
if not user_ids:
defer.returnValue({})
results = {}
rows = yield self._simple_select_many_batch(
table="push_rules",
column="user_name",
iterable=user_ids,
retcols=("*",),
desc="bulk_get_push_rules",
)
rows.sort(key=lambda e: (-e["priority_class"], -e["priority"]))
for row in rows:
results.setdefault(row['user_name'], []).append(row)
defer.returnValue(results)
@defer.inlineCallbacks
def bulk_get_push_rules_enabled(self, user_ids):
if not user_ids:
defer.returnValue({})
results = {}
rows = yield self._simple_select_many_batch(
table="push_rules_enable",
column="user_name",
iterable=user_ids,
retcols=("user_name", "rule_id", "enabled",),
desc="bulk_get_push_rules_enabled",
)
for row in rows:
results.setdefault(row['user_name'], {})[row['rule_id']] = row['enabled']
defer.returnValue(results)
def add_push_rule(
self, user_id, rule_id, priority_class, conditions, actions,
before=None, after=None
):
conditions_json = json.dumps(conditions)
actions_json = json.dumps(actions)
if before or after:
return self.runInteraction(
"_add_push_rule_relative_txn",
self._add_push_rule_relative_txn,
user_id, rule_id, priority_class,
conditions_json, actions_json, before, after,
)
else:
return self.runInteraction(
"_add_push_rule_highest_priority_txn",
self._add_push_rule_highest_priority_txn,
user_id, rule_id, priority_class,
conditions_json, actions_json,
)
def _add_push_rule_relative_txn(
self, txn, user_id, rule_id, priority_class,
conditions_json, actions_json, before, after
):
# Lock the table since otherwise we'll have annoying races between the
# SELECT here and the UPSERT below.
self.database_engine.lock_table(txn, "push_rules")
relative_to_rule = before or after
res = self._simple_select_one_txn(
txn,
table="push_rules",
keyvalues={
"user_name": user_id,
"rule_id": relative_to_rule,
},
retcols=["priority_class", "priority"],
allow_none=True,
)
if not res:
raise RuleNotFoundException(
"before/after rule not found: %s" % (relative_to_rule,)
)
base_priority_class = res["priority_class"]
base_rule_priority = res["priority"]
if base_priority_class != priority_class:
raise InconsistentRuleException(
"Given priority class does not match class of relative rule"
)
if before:
# Higher priority rules are executed first, So adding a rule before
# a rule means giving it a higher priority than that rule.
new_rule_priority = base_rule_priority + 1
else:
# We increment the priority of the existing rules to make space for
# the new rule. Therefore if we want this rule to appear after
# an existing rule we give it the priority of the existing rule,
# and then increment the priority of the existing rule.
new_rule_priority = base_rule_priority
sql = (
"UPDATE push_rules SET priority = priority + 1"
" WHERE user_name = ? AND priority_class = ? AND priority >= ?"
)
txn.execute(sql, (user_id, priority_class, new_rule_priority))
self._upsert_push_rule_txn(
txn, user_id, rule_id, priority_class, new_rule_priority,
conditions_json, actions_json,
)
def _add_push_rule_highest_priority_txn(
self, txn, user_id, rule_id, priority_class,
conditions_json, actions_json
):
# Lock the table since otherwise we'll have annoying races between the
# SELECT here and the UPSERT below.
self.database_engine.lock_table(txn, "push_rules")
# find the highest priority rule in that class
sql = (
"SELECT COUNT(*), MAX(priority) FROM push_rules"
" WHERE user_name = ? and priority_class = ?"
)
txn.execute(sql, (user_id, priority_class))
res = txn.fetchall()
(how_many, highest_prio) = res[0]
new_prio = 0
if how_many > 0:
new_prio = highest_prio + 1
self._upsert_push_rule_txn(
txn,
user_id, rule_id, priority_class, new_prio,
conditions_json, actions_json,
)
def _upsert_push_rule_txn(
self, txn, user_id, rule_id, priority_class,
priority, conditions_json, actions_json
):
"""Specialised version of _simple_upsert_txn that picks a push_rule_id
using the _push_rule_id_gen if it needs to insert the rule. It assumes
that the "push_rules" table is locked"""
sql = (
"UPDATE push_rules"
" SET priority_class = ?, priority = ?, conditions = ?, actions = ?"
" WHERE user_name = ? AND rule_id = ?"
)
txn.execute(sql, (
priority_class, priority, conditions_json, actions_json,
user_id, rule_id,
))
if txn.rowcount == 0:
# We didn't update a row with the given rule_id so insert one
push_rule_id = self._push_rule_id_gen.get_next_txn(txn)
self._simple_insert_txn(
txn,
table="push_rules",
values={
"id": push_rule_id,
"user_name": user_id,
"rule_id": rule_id,
"priority_class": priority_class,
"priority": priority,
"conditions": conditions_json,
"actions": actions_json,
},
)
txn.call_after(
self.get_push_rules_for_user.invalidate, (user_id,)
)
txn.call_after(
self.get_push_rules_enabled_for_user.invalidate, (user_id,)
)
@defer.inlineCallbacks
def delete_push_rule(self, user_id, rule_id):
"""
Delete a push rule. Args specify the row to be deleted and can be
any of the columns in the push_rule table, but below are the
standard ones
Args:
user_id (str): The matrix ID of the push rule owner
rule_id (str): The rule_id of the rule to be deleted
"""
yield self._simple_delete_one(
"push_rules",
{'user_name': user_id, 'rule_id': rule_id},
desc="delete_push_rule",
)
self.get_push_rules_for_user.invalidate((user_id,))
self.get_push_rules_enabled_for_user.invalidate((user_id,))
@defer.inlineCallbacks
def set_push_rule_enabled(self, user_id, rule_id, enabled):
ret = yield self.runInteraction(
"_set_push_rule_enabled_txn",
self._set_push_rule_enabled_txn,
user_id, rule_id, enabled
)
defer.returnValue(ret)
def _set_push_rule_enabled_txn(self, txn, user_id, rule_id, enabled):
new_id = self._push_rules_enable_id_gen.get_next_txn(txn)
self._simple_upsert_txn(
txn,
"push_rules_enable",
{'user_name': user_id, 'rule_id': rule_id},
{'enabled': 1 if enabled else 0},
{'id': new_id},
)
txn.call_after(
self.get_push_rules_for_user.invalidate, (user_id,)
)
txn.call_after(
self.get_push_rules_enabled_for_user.invalidate, (user_id,)
)
class RuleNotFoundException(Exception):
pass
class InconsistentRuleException(Exception):
pass