forked-synapse/synapse/storage/databases/main/pusher.py

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# Copyright 2014-2016 OpenMarket Ltd
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# Copyright 2018 New Vector 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.
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import logging
from typing import TYPE_CHECKING, Any, Dict, Iterable, Iterator, List, Optional, Tuple
from synapse.push import PusherConfig, ThrottleParams
from synapse.storage._base import SQLBaseStore, db_to_json
from synapse.storage.database import DatabasePool
from synapse.storage.types import Connection
from synapse.storage.util.id_generators import StreamIdGenerator
from synapse.types import JsonDict
from synapse.util import json_encoder
from synapse.util.caches.descriptors import cached, cachedList
if TYPE_CHECKING:
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
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class PusherWorkerStore(SQLBaseStore):
def __init__(self, database: DatabasePool, db_conn: Connection, hs: "HomeServer"):
super().__init__(database, db_conn, hs)
self._pushers_id_gen = StreamIdGenerator(
db_conn, "pushers", "id", extra_tables=[("deleted_pushers", "stream_id")]
)
self.db_pool.updates.register_background_update_handler(
"remove_deactivated_pushers",
self._remove_deactivated_pushers,
)
self.db_pool.updates.register_background_update_handler(
"remove_stale_pushers",
self._remove_stale_pushers,
)
self.db_pool.updates.register_background_update_handler(
"remove_deleted_email_pushers",
self._remove_deleted_email_pushers,
)
def _decode_pushers_rows(self, rows: Iterable[dict]) -> Iterator[PusherConfig]:
"""JSON-decode the data in the rows returned from the `pushers` table
Drops any rows whose data cannot be decoded
"""
for r in rows:
data_json = r["data"]
try:
r["data"] = db_to_json(data_json)
except Exception as e:
logger.warning(
"Invalid JSON in data for pusher %d: %s, %s",
r["id"],
data_json,
e.args[0],
)
continue
yield PusherConfig(**r)
async def user_has_pusher(self, user_id: str) -> bool:
ret = await self.db_pool.simple_select_one_onecol(
"pushers", {"user_name": user_id}, "id", allow_none=True
)
return ret is not None
async def get_pushers_by_app_id_and_pushkey(
self, app_id: str, pushkey: str
) -> Iterator[PusherConfig]:
return await self.get_pushers_by({"app_id": app_id, "pushkey": pushkey})
async def get_pushers_by_user_id(self, user_id: str) -> Iterator[PusherConfig]:
return await self.get_pushers_by({"user_name": user_id})
async def get_pushers_by(self, keyvalues: Dict[str, Any]) -> Iterator[PusherConfig]:
ret = await self.db_pool.simple_select_list(
"pushers",
keyvalues,
[
"id",
"user_name",
"access_token",
"profile_tag",
"kind",
"app_id",
"app_display_name",
"device_display_name",
"pushkey",
"ts",
"lang",
"data",
"last_stream_ordering",
"last_success",
"failing_since",
],
desc="get_pushers_by",
)
return self._decode_pushers_rows(ret)
async def get_all_pushers(self) -> Iterator[PusherConfig]:
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def get_pushers(txn):
txn.execute("SELECT * FROM pushers")
rows = self.db_pool.cursor_to_dict(txn)
return self._decode_pushers_rows(rows)
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return await self.db_pool.runInteraction("get_all_pushers", get_pushers)
async def get_all_updated_pushers_rows(
self, instance_name: str, last_id: int, current_id: int, limit: int
) -> Tuple[List[Tuple[int, tuple]], int, bool]:
"""Get updates for pushers replication stream.
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Args:
instance_name: The writer we want to fetch updates from. Unused
here since there is only ever one writer.
last_id: The token to fetch updates from. Exclusive.
current_id: The token to fetch updates up to. Inclusive.
limit: The requested limit for the number of rows to return. The
function may return more or fewer rows.
Returns:
A tuple consisting of: the updates, a token to use to fetch
subsequent updates, and whether we returned fewer rows than exists
between the requested tokens due to the limit.
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The token returned can be used in a subsequent call to this
function to get further updatees.
The updates are a list of 2-tuples of stream ID and the row data
"""
if last_id == current_id:
return [], current_id, False
def get_all_updated_pushers_rows_txn(txn):
sql = """
SELECT id, user_name, app_id, pushkey
FROM pushers
WHERE ? < id AND id <= ?
ORDER BY id ASC LIMIT ?
"""
txn.execute(sql, (last_id, current_id, limit))
updates = [
(stream_id, (user_name, app_id, pushkey, False))
for stream_id, user_name, app_id, pushkey in txn
]
sql = """
SELECT stream_id, user_id, app_id, pushkey
FROM deleted_pushers
WHERE ? < stream_id AND stream_id <= ?
ORDER BY stream_id ASC LIMIT ?
"""
txn.execute(sql, (last_id, current_id, limit))
updates.extend(
(stream_id, (user_name, app_id, pushkey, True))
for stream_id, user_name, app_id, pushkey in txn
)
updates.sort() # Sort so that they're ordered by stream id
limited = False
upper_bound = current_id
if len(updates) >= limit:
limited = True
upper_bound = updates[-1][0]
return updates, upper_bound, limited
return await self.db_pool.runInteraction(
"get_all_updated_pushers_rows", get_all_updated_pushers_rows_txn
)
@cached(num_args=1, max_entries=15000)
async def get_if_user_has_pusher(self, user_id: str):
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# This only exists for the cachedList decorator
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raise NotImplementedError()
@cachedList(
cached_method_name="get_if_user_has_pusher",
list_name="user_ids",
num_args=1,
)
async def get_if_users_have_pushers(
self, user_ids: Iterable[str]
) -> Dict[str, bool]:
rows = await self.db_pool.simple_select_many_batch(
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table="pushers",
column="user_name",
iterable=user_ids,
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retcols=["user_name"],
desc="get_if_users_have_pushers",
)
result = {user_id: False for user_id in user_ids}
result.update({r["user_name"]: True for r in rows})
return result
async def update_pusher_last_stream_ordering(
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self, app_id, pushkey, user_id, last_stream_ordering
) -> None:
await self.db_pool.simple_update_one(
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"pushers",
{"app_id": app_id, "pushkey": pushkey, "user_name": user_id},
{"last_stream_ordering": last_stream_ordering},
desc="update_pusher_last_stream_ordering",
)
async def update_pusher_last_stream_ordering_and_success(
self,
app_id: str,
pushkey: str,
user_id: str,
last_stream_ordering: int,
last_success: int,
) -> bool:
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"""Update the last stream ordering position we've processed up to for
the given pusher.
Args:
app_id
pushkey
user_id
last_stream_ordering
last_success
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Returns:
True if the pusher still exists; False if it has been deleted.
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"""
updated = await self.db_pool.simple_update(
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table="pushers",
keyvalues={"app_id": app_id, "pushkey": pushkey, "user_name": user_id},
updatevalues={
"last_stream_ordering": last_stream_ordering,
"last_success": last_success,
},
desc="update_pusher_last_stream_ordering_and_success",
)
return bool(updated)
async def update_pusher_failing_since(
self, app_id: str, pushkey: str, user_id: str, failing_since: Optional[int]
) -> None:
await self.db_pool.simple_update(
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table="pushers",
keyvalues={"app_id": app_id, "pushkey": pushkey, "user_name": user_id},
updatevalues={"failing_since": failing_since},
desc="update_pusher_failing_since",
)
async def get_throttle_params_by_room(
self, pusher_id: str
) -> Dict[str, ThrottleParams]:
res = await self.db_pool.simple_select_list(
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"pusher_throttle",
{"pusher": pusher_id},
["room_id", "last_sent_ts", "throttle_ms"],
desc="get_throttle_params_by_room",
)
params_by_room = {}
for row in res:
params_by_room[row["room_id"]] = ThrottleParams(
row["last_sent_ts"],
row["throttle_ms"],
)
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return params_by_room
async def set_throttle_params(
self, pusher_id: str, room_id: str, params: ThrottleParams
) -> None:
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# no need to lock because `pusher_throttle` has a primary key on
# (pusher, room_id) so simple_upsert will retry
await self.db_pool.simple_upsert(
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"pusher_throttle",
{"pusher": pusher_id, "room_id": room_id},
{"last_sent_ts": params.last_sent_ts, "throttle_ms": params.throttle_ms},
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desc="set_throttle_params",
lock=False,
)
async def _remove_deactivated_pushers(self, progress: dict, batch_size: int) -> int:
"""A background update that deletes all pushers for deactivated users.
Note that we don't proacively tell the pusherpool that we've deleted
these (just because its a bit off a faff to do from here), but they will
get cleaned up at the next restart
"""
last_user = progress.get("last_user", "")
def _delete_pushers(txn) -> int:
sql = """
SELECT name FROM users
WHERE deactivated = ? and name > ?
ORDER BY name ASC
LIMIT ?
"""
txn.execute(sql, (1, last_user, batch_size))
users = [row[0] for row in txn]
self.db_pool.simple_delete_many_txn(
txn,
table="pushers",
column="user_name",
iterable=users,
keyvalues={},
)
if users:
self.db_pool.updates._background_update_progress_txn(
txn, "remove_deactivated_pushers", {"last_user": users[-1]}
)
return len(users)
number_deleted = await self.db_pool.runInteraction(
"_remove_deactivated_pushers", _delete_pushers
)
if number_deleted < batch_size:
await self.db_pool.updates._end_background_update(
"remove_deactivated_pushers"
)
return number_deleted
async def _remove_stale_pushers(self, progress: dict, batch_size: int) -> int:
"""A background update that deletes all pushers for logged out devices.
Note that we don't proacively tell the pusherpool that we've deleted
these (just because its a bit off a faff to do from here), but they will
get cleaned up at the next restart
"""
last_pusher = progress.get("last_pusher", 0)
def _delete_pushers(txn) -> int:
sql = """
SELECT p.id, access_token FROM pushers AS p
LEFT JOIN access_tokens AS a ON (p.access_token = a.id)
WHERE p.id > ?
ORDER BY p.id ASC
LIMIT ?
"""
txn.execute(sql, (last_pusher, batch_size))
pushers = [(row[0], row[1]) for row in txn]
self.db_pool.simple_delete_many_txn(
txn,
table="pushers",
column="id",
iterable=(pusher_id for pusher_id, token in pushers if token is None),
keyvalues={},
)
if pushers:
self.db_pool.updates._background_update_progress_txn(
txn, "remove_stale_pushers", {"last_pusher": pushers[-1][0]}
)
return len(pushers)
number_deleted = await self.db_pool.runInteraction(
"_remove_stale_pushers", _delete_pushers
)
if number_deleted < batch_size:
await self.db_pool.updates._end_background_update("remove_stale_pushers")
return number_deleted
async def _remove_deleted_email_pushers(
self, progress: dict, batch_size: int
) -> int:
"""A background update that deletes all pushers for deleted email addresses.
In previous versions of synapse, when users deleted their email address, it didn't
also delete all the pushers for that email address. This background update removes
those to prevent unwanted emails. This should only need to be run once (when users
upgrade to v1.42.0
Args:
progress: dict used to store progress of this background update
batch_size: the maximum number of rows to retrieve in a single select query
Returns:
The number of deleted rows
"""
last_pusher = progress.get("last_pusher", 0)
def _delete_pushers(txn) -> int:
sql = """
SELECT p.id, p.user_name, p.app_id, p.pushkey
FROM pushers AS p
LEFT JOIN user_threepids AS t
ON t.user_id = p.user_name
AND t.medium = 'email'
AND t.address = p.pushkey
WHERE t.user_id is NULL
AND p.app_id = 'm.email'
AND p.id > ?
ORDER BY p.id ASC
LIMIT ?
"""
txn.execute(sql, (last_pusher, batch_size))
rows = txn.fetchall()
last = None
num_deleted = 0
for row in rows:
last = row[0]
num_deleted += 1
self.db_pool.simple_delete_txn(
txn,
"pushers",
{"user_name": row[1], "app_id": row[2], "pushkey": row[3]},
)
if last is not None:
self.db_pool.updates._background_update_progress_txn(
txn, "remove_deleted_email_pushers", {"last_pusher": last}
)
return num_deleted
number_deleted = await self.db_pool.runInteraction(
"_remove_deleted_email_pushers", _delete_pushers
)
if number_deleted < batch_size:
await self.db_pool.updates._end_background_update(
"remove_deleted_email_pushers"
)
return number_deleted
class PusherStore(PusherWorkerStore):
def get_pushers_stream_token(self) -> int:
return self._pushers_id_gen.get_current_token()
async def add_pusher(
self,
user_id: str,
access_token: Optional[int],
kind: str,
app_id: str,
app_display_name: str,
device_display_name: str,
pushkey: str,
pushkey_ts: int,
lang: Optional[str],
data: Optional[JsonDict],
last_stream_ordering: int,
profile_tag: str = "",
) -> None:
async with self._pushers_id_gen.get_next() as stream_id:
# no need to lock because `pushers` has a unique key on
# (app_id, pushkey, user_name) so simple_upsert will retry
await self.db_pool.simple_upsert(
table="pushers",
keyvalues={"app_id": app_id, "pushkey": pushkey, "user_name": user_id},
values={
"access_token": access_token,
"kind": kind,
"app_display_name": app_display_name,
"device_display_name": device_display_name,
"ts": pushkey_ts,
"lang": lang,
"data": json_encoder.encode(data),
"last_stream_ordering": last_stream_ordering,
"profile_tag": profile_tag,
"id": stream_id,
},
desc="add_pusher",
lock=False,
)
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user_has_pusher = self.get_if_user_has_pusher.cache.get_immediate(
(user_id,), None, update_metrics=False
)
if user_has_pusher is not True:
# invalidate, since we the user might not have had a pusher before
await self.db_pool.runInteraction(
"add_pusher",
self._invalidate_cache_and_stream, # type: ignore
self.get_if_user_has_pusher,
(user_id,),
)
async def delete_pusher_by_app_id_pushkey_user_id(
self, app_id: str, pushkey: str, user_id: str
) -> None:
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def delete_pusher_txn(txn, stream_id):
self._invalidate_cache_and_stream( # type: ignore
txn, self.get_if_user_has_pusher, (user_id,)
)
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# It is expected that there is exactly one pusher to delete, but
# if it isn't there (or there are multiple) delete them all.
self.db_pool.simple_delete_txn(
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txn,
"pushers",
{"app_id": app_id, "pushkey": pushkey, "user_name": user_id},
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)
# it's possible for us to end up with duplicate rows for
# (app_id, pushkey, user_id) at different stream_ids, but that
# doesn't really matter.
self.db_pool.simple_insert_txn(
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txn,
table="deleted_pushers",
values={
"stream_id": stream_id,
"app_id": app_id,
"pushkey": pushkey,
"user_id": user_id,
},
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)
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async with self._pushers_id_gen.get_next() as stream_id:
await self.db_pool.runInteraction(
"delete_pusher", delete_pusher_txn, stream_id
)
async def delete_all_pushers_for_user(self, user_id: str) -> None:
"""Delete all pushers associated with an account."""
# We want to generate a row in `deleted_pushers` for each pusher we're
# deleting, so we fetch the list now so we can generate the appropriate
# number of stream IDs.
#
# Note: technically there could be a race here between adding/deleting
# pushers, but a) the worst case if we don't stop a pusher until the
# next restart and b) this is only called when we're deactivating an
# account.
pushers = list(await self.get_pushers_by_user_id(user_id))
def delete_pushers_txn(txn, stream_ids):
self._invalidate_cache_and_stream( # type: ignore
txn, self.get_if_user_has_pusher, (user_id,)
)
self.db_pool.simple_delete_txn(
txn,
table="pushers",
keyvalues={"user_name": user_id},
)
self.db_pool.simple_insert_many_txn(
txn,
table="deleted_pushers",
values=[
{
"stream_id": stream_id,
"app_id": pusher.app_id,
"pushkey": pusher.pushkey,
"user_id": user_id,
}
for stream_id, pusher in zip(stream_ids, pushers)
],
)
async with self._pushers_id_gen.get_next_mult(len(pushers)) as stream_ids:
await self.db_pool.runInteraction(
"delete_all_pushers_for_user", delete_pushers_txn, stream_ids
)