anonymousland-synapse/synapse/handlers/account_data.py
Patrick Cloke 1182ae5063
Add helper to parse an enum from query args & use it. (#14956)
The `parse_enum` helper pulls an enum value from the query string
(by delegating down to the parse_string helper with values generated
from the enum).

This is used to pull out "f" and "b" in most places and then we thread
the resulting Direction enum throughout more code.
2023-02-01 21:35:24 +00:00

361 lines
13 KiB
Python

# Copyright 2015, 2016 OpenMarket Ltd
# Copyright 2021 The Matrix.org Foundation C.I.C.
#
# 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.
import logging
import random
from typing import TYPE_CHECKING, Awaitable, Callable, List, Optional, Tuple
from synapse.api.constants import AccountDataTypes
from synapse.replication.http.account_data import (
ReplicationAddRoomAccountDataRestServlet,
ReplicationAddTagRestServlet,
ReplicationAddUserAccountDataRestServlet,
ReplicationRemoveRoomAccountDataRestServlet,
ReplicationRemoveTagRestServlet,
ReplicationRemoveUserAccountDataRestServlet,
)
from synapse.streams import EventSource
from synapse.types import JsonDict, StrCollection, StreamKeyType, UserID
if TYPE_CHECKING:
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
ON_ACCOUNT_DATA_UPDATED_CALLBACK = Callable[
[str, Optional[str], str, JsonDict], Awaitable
]
class AccountDataHandler:
def __init__(self, hs: "HomeServer"):
self._store = hs.get_datastores().main
self._instance_name = hs.get_instance_name()
self._notifier = hs.get_notifier()
self._add_user_data_client = (
ReplicationAddUserAccountDataRestServlet.make_client(hs)
)
self._remove_user_data_client = (
ReplicationRemoveUserAccountDataRestServlet.make_client(hs)
)
self._add_room_data_client = (
ReplicationAddRoomAccountDataRestServlet.make_client(hs)
)
self._remove_room_data_client = (
ReplicationRemoveRoomAccountDataRestServlet.make_client(hs)
)
self._add_tag_client = ReplicationAddTagRestServlet.make_client(hs)
self._remove_tag_client = ReplicationRemoveTagRestServlet.make_client(hs)
self._account_data_writers = hs.config.worker.writers.account_data
self._on_account_data_updated_callbacks: List[
ON_ACCOUNT_DATA_UPDATED_CALLBACK
] = []
def register_module_callbacks(
self, on_account_data_updated: Optional[ON_ACCOUNT_DATA_UPDATED_CALLBACK] = None
) -> None:
"""Register callbacks from modules."""
if on_account_data_updated is not None:
self._on_account_data_updated_callbacks.append(on_account_data_updated)
async def _notify_modules(
self,
user_id: str,
room_id: Optional[str],
account_data_type: str,
content: JsonDict,
) -> None:
"""Notifies modules about new account data changes.
A change can be either a new account data type being added, or the content
associated with a type being changed. Account data for a given type is removed by
changing the associated content to an empty dictionary.
Note that this is not called when the tags associated with a room change.
Args:
user_id: The user whose account data is changing.
room_id: The ID of the room the account data change concerns, if any.
account_data_type: The type of the account data.
content: The content that is now associated with this type.
"""
for callback in self._on_account_data_updated_callbacks:
try:
await callback(user_id, room_id, account_data_type, content)
except Exception as e:
logger.exception("Failed to run module callback %s: %s", callback, e)
async def add_account_data_to_room(
self, user_id: str, room_id: str, account_data_type: str, content: JsonDict
) -> int:
"""Add some account_data to a room for a user.
Args:
user_id: The user to add a tag for.
room_id: The room to add a tag for.
account_data_type: The type of account_data to add.
content: A json object to associate with the tag.
Returns:
The maximum stream ID.
"""
if self._instance_name in self._account_data_writers:
max_stream_id = await self._store.add_account_data_to_room(
user_id, room_id, account_data_type, content
)
self._notifier.on_new_event(
StreamKeyType.ACCOUNT_DATA, max_stream_id, users=[user_id]
)
await self._notify_modules(user_id, room_id, account_data_type, content)
return max_stream_id
else:
response = await self._add_room_data_client(
instance_name=random.choice(self._account_data_writers),
user_id=user_id,
room_id=room_id,
account_data_type=account_data_type,
content=content,
)
return response["max_stream_id"]
async def remove_account_data_for_room(
self, user_id: str, room_id: str, account_data_type: str
) -> Optional[int]:
"""
Deletes the room account data for the given user and account data type.
"Deleting" account data merely means setting the content of the account data
to an empty JSON object: {}.
Args:
user_id: The user ID to remove room account data for.
room_id: The room ID to target.
account_data_type: The account data type to remove.
Returns:
The maximum stream ID, or None if the room account data item did not exist.
"""
if self._instance_name in self._account_data_writers:
max_stream_id = await self._store.remove_account_data_for_room(
user_id, room_id, account_data_type
)
if max_stream_id is None:
# The referenced account data did not exist, so no delete occurred.
return None
self._notifier.on_new_event(
StreamKeyType.ACCOUNT_DATA, max_stream_id, users=[user_id]
)
# Notify Synapse modules that the content of the type has changed to an
# empty dictionary.
await self._notify_modules(user_id, room_id, account_data_type, {})
return max_stream_id
else:
response = await self._remove_room_data_client(
instance_name=random.choice(self._account_data_writers),
user_id=user_id,
room_id=room_id,
account_data_type=account_data_type,
content={},
)
return response["max_stream_id"]
async def add_account_data_for_user(
self, user_id: str, account_data_type: str, content: JsonDict
) -> int:
"""Add some global account_data for a user.
Args:
user_id: The user to add some account data for.
account_data_type: The type of account_data to add.
content: The content json dictionary.
Returns:
The maximum stream ID.
"""
if self._instance_name in self._account_data_writers:
max_stream_id = await self._store.add_account_data_for_user(
user_id, account_data_type, content
)
self._notifier.on_new_event(
StreamKeyType.ACCOUNT_DATA, max_stream_id, users=[user_id]
)
await self._notify_modules(user_id, None, account_data_type, content)
return max_stream_id
else:
response = await self._add_user_data_client(
instance_name=random.choice(self._account_data_writers),
user_id=user_id,
account_data_type=account_data_type,
content=content,
)
return response["max_stream_id"]
async def remove_account_data_for_user(
self, user_id: str, account_data_type: str
) -> Optional[int]:
"""Removes a piece of global account_data for a user.
Args:
user_id: The user to remove account data for.
account_data_type: The type of account_data to remove.
Returns:
The maximum stream ID, or None if the room account data item did not exist.
"""
if self._instance_name in self._account_data_writers:
max_stream_id = await self._store.remove_account_data_for_user(
user_id, account_data_type
)
if max_stream_id is None:
# The referenced account data did not exist, so no delete occurred.
return None
self._notifier.on_new_event(
StreamKeyType.ACCOUNT_DATA, max_stream_id, users=[user_id]
)
# Notify Synapse modules that the content of the type has changed to an
# empty dictionary.
await self._notify_modules(user_id, None, account_data_type, {})
return max_stream_id
else:
response = await self._remove_user_data_client(
instance_name=random.choice(self._account_data_writers),
user_id=user_id,
account_data_type=account_data_type,
content={},
)
return response["max_stream_id"]
async def add_tag_to_room(
self, user_id: str, room_id: str, tag: str, content: JsonDict
) -> int:
"""Add a tag to a room for a user.
Args:
user_id: The user to add a tag for.
room_id: The room to add a tag for.
tag: The tag name to add.
content: A json object to associate with the tag.
Returns:
The next account data ID.
"""
if self._instance_name in self._account_data_writers:
max_stream_id = await self._store.add_tag_to_room(
user_id, room_id, tag, content
)
self._notifier.on_new_event(
StreamKeyType.ACCOUNT_DATA, max_stream_id, users=[user_id]
)
return max_stream_id
else:
response = await self._add_tag_client(
instance_name=random.choice(self._account_data_writers),
user_id=user_id,
room_id=room_id,
tag=tag,
content=content,
)
return response["max_stream_id"]
async def remove_tag_from_room(self, user_id: str, room_id: str, tag: str) -> int:
"""Remove a tag from a room for a user.
Returns:
The next account data ID.
"""
if self._instance_name in self._account_data_writers:
max_stream_id = await self._store.remove_tag_from_room(
user_id, room_id, tag
)
self._notifier.on_new_event(
StreamKeyType.ACCOUNT_DATA, max_stream_id, users=[user_id]
)
return max_stream_id
else:
response = await self._remove_tag_client(
instance_name=random.choice(self._account_data_writers),
user_id=user_id,
room_id=room_id,
tag=tag,
)
return response["max_stream_id"]
class AccountDataEventSource(EventSource[int, JsonDict]):
def __init__(self, hs: "HomeServer"):
self.store = hs.get_datastores().main
def get_current_key(self) -> int:
return self.store.get_max_account_data_stream_id()
async def get_new_events(
self,
user: UserID,
from_key: int,
limit: int,
room_ids: StrCollection,
is_guest: bool,
explicit_room_id: Optional[str] = None,
) -> Tuple[List[JsonDict], int]:
user_id = user.to_string()
last_stream_id = from_key
current_stream_id = self.store.get_max_account_data_stream_id()
results = []
tags = await self.store.get_updated_tags(user_id, last_stream_id)
for room_id, room_tags in tags.items():
results.append(
{
"type": AccountDataTypes.TAG,
"content": {"tags": room_tags},
"room_id": room_id,
}
)
(
account_data,
room_account_data,
) = await self.store.get_updated_account_data_for_user(user_id, last_stream_id)
for account_data_type, content in account_data.items():
results.append({"type": account_data_type, "content": content})
for room_id, account_data in room_account_data.items():
for account_data_type, content in account_data.items():
results.append(
{"type": account_data_type, "content": content, "room_id": room_id}
)
return results, current_stream_id