MatrixSynapse/synapse/storage/deviceinbox.py

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# -*- coding: utf-8 -*-
# Copyright 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.
import logging
import ujson
from twisted.internet import defer
from ._base import SQLBaseStore
logger = logging.getLogger(__name__)
class DeviceInboxStore(SQLBaseStore):
@defer.inlineCallbacks
def add_messages_to_device_inbox(self, local_messages_by_user_then_device,
remote_messages_by_destination):
"""Used to send messages from this server.
Args:
sender_user_id(str): The ID of the user sending these messages.
local_messages_by_user_and_device(dict):
Dictionary of user_id to device_id to message.
remote_messages_by_destination(dict):
Dictionary of destination server_name to the EDU JSON to send.
Returns:
A deferred stream_id that resolves when the messages have been
inserted.
"""
def add_messages_txn(txn, now_ms, stream_id):
# Add the local messages directly to the local inbox.
self._add_messages_to_local_device_inbox_txn(
txn, stream_id, local_messages_by_user_then_device
)
# Add the remote messages to the federation outbox.
# We'll send them to a remote server when we next send a
# federation transaction to that destination.
sql = (
"INSERT INTO device_federation_outbox"
" (destination, stream_id, queued_ts, messages_json)"
" VALUES (?,?,?,?)"
)
rows = []
for destination, edu in remote_messages_by_destination.items():
edu_json = ujson.dumps(edu)
rows.append((destination, stream_id, now_ms, edu_json))
txn.executemany(sql, rows)
with self._device_inbox_id_gen.get_next() as stream_id:
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now_ms = self.clock.time_msec()
yield self.runInteraction(
"add_messages_to_device_inbox",
add_messages_txn,
now_ms,
stream_id,
)
for user_id in local_messages_by_user_then_device.keys():
self._device_inbox_stream_cache.entity_has_changed(
user_id, stream_id
)
for destination in remote_messages_by_destination.keys():
self._device_federation_outbox_stream_cache.entity_has_changed(
destination, stream_id
)
defer.returnValue(self._device_inbox_id_gen.get_current_token())
@defer.inlineCallbacks
def add_messages_from_remote_to_device_inbox(
self, origin, message_id, local_messages_by_user_then_device
):
def add_messages_txn(txn, now_ms, stream_id):
# Check if we've already inserted a matching message_id for that
# origin. This can happen if the origin doesn't receive our
# acknowledgement from the first time we received the message.
already_inserted = self._simple_select_one_txn(
txn, table="device_federation_inbox",
keyvalues={"origin": origin, "message_id": message_id},
retcols=("message_id",),
allow_none=True,
)
if already_inserted is not None:
return
# Add an entry for this message_id so that we know we've processed
# it.
self._simple_insert_txn(
txn, table="device_federation_inbox",
values={
"origin": origin,
"message_id": message_id,
"received_ts": now_ms,
},
)
# Add the messages to the approriate local device inboxes so that
# they'll be sent to the devices when they next sync.
self._add_messages_to_local_device_inbox_txn(
txn, stream_id, local_messages_by_user_then_device
)
with self._device_inbox_id_gen.get_next() as stream_id:
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now_ms = self.clock.time_msec()
yield self.runInteraction(
"add_messages_from_remote_to_device_inbox",
add_messages_txn,
now_ms,
stream_id,
)
for user_id in local_messages_by_user_then_device.keys():
self._device_inbox_stream_cache.entity_has_changed(
user_id, stream_id
)
defer.returnValue(stream_id)
def _add_messages_to_local_device_inbox_txn(self, txn, stream_id,
messages_by_user_then_device):
sql = (
"UPDATE device_max_stream_id"
" SET stream_id = ?"
" WHERE stream_id < ?"
)
txn.execute(sql, (stream_id, stream_id))
local_by_user_then_device = {}
for user_id, messages_by_device in messages_by_user_then_device.items():
messages_json_for_user = {}
devices = messages_by_device.keys()
if len(devices) == 1 and devices[0] == "*":
# Handle wildcard device_ids.
sql = (
"SELECT device_id FROM devices"
" WHERE user_id = ?"
)
txn.execute(sql, (user_id,))
message_json = ujson.dumps(messages_by_device["*"])
for row in txn.fetchall():
# Add the message for all devices for this user on this
# server.
device = row[0]
messages_json_for_user[device] = message_json
else:
if not devices:
continue
sql = (
"SELECT device_id FROM devices"
" WHERE user_id = ? AND device_id IN ("
+ ",".join("?" * len(devices))
+ ")"
)
# TODO: Maybe this needs to be done in batches if there are
# too many local devices for a given user.
txn.execute(sql, [user_id] + devices)
for row in txn.fetchall():
# Only insert into the local inbox if the device exists on
# this server
device = row[0]
message_json = ujson.dumps(messages_by_device[device])
messages_json_for_user[device] = message_json
if messages_json_for_user:
local_by_user_then_device[user_id] = messages_json_for_user
if not local_by_user_then_device:
return
sql = (
"INSERT INTO device_inbox"
" (user_id, device_id, stream_id, message_json)"
" VALUES (?,?,?,?)"
)
rows = []
for user_id, messages_by_device in local_by_user_then_device.items():
for device_id, message_json in messages_by_device.items():
rows.append((user_id, device_id, stream_id, message_json))
txn.executemany(sql, rows)
def get_new_messages_for_device(
self, user_id, device_id, last_stream_id, current_stream_id, limit=100
):
"""
Args:
user_id(str): The recipient user_id.
device_id(str): The recipient device_id.
current_stream_id(int): The current position of the to device
message stream.
Returns:
Deferred ([dict], int): List of messages for the device and where
in the stream the messages got to.
"""
has_changed = self._device_inbox_stream_cache.has_entity_changed(
user_id, last_stream_id
)
if not has_changed:
return defer.succeed(([], current_stream_id))
def get_new_messages_for_device_txn(txn):
sql = (
"SELECT stream_id, message_json FROM device_inbox"
" WHERE user_id = ? AND device_id = ?"
" AND ? < stream_id AND stream_id <= ?"
" ORDER BY stream_id ASC"
" LIMIT ?"
)
txn.execute(sql, (
user_id, device_id, last_stream_id, current_stream_id, limit
))
messages = []
for row in txn.fetchall():
stream_pos = row[0]
messages.append(ujson.loads(row[1]))
if len(messages) < limit:
stream_pos = current_stream_id
return (messages, stream_pos)
return self.runInteraction(
"get_new_messages_for_device", get_new_messages_for_device_txn,
)
def delete_messages_for_device(self, user_id, device_id, up_to_stream_id):
"""
Args:
user_id(str): The recipient user_id.
device_id(str): The recipient device_id.
up_to_stream_id(int): Where to delete messages up to.
Returns:
A deferred that resolves when the messages have been deleted.
"""
def delete_messages_for_device_txn(txn):
sql = (
"DELETE FROM device_inbox"
" WHERE user_id = ? AND device_id = ?"
" AND stream_id <= ?"
)
txn.execute(sql, (user_id, device_id, up_to_stream_id))
return self.runInteraction(
"delete_messages_for_device", delete_messages_for_device_txn
)
def get_all_new_device_messages(self, last_pos, current_pos, limit):
"""
Args:
last_pos(int):
current_pos(int):
limit(int):
Returns:
A deferred list of rows from the device inbox
"""
if last_pos == current_pos:
return defer.succeed([])
def get_all_new_device_messages_txn(txn):
sql = (
"SELECT stream_id FROM device_inbox"
" WHERE ? < stream_id AND stream_id <= ?"
" GROUP BY stream_id"
" ORDER BY stream_id ASC"
" LIMIT ?"
)
txn.execute(sql, (last_pos, current_pos, limit))
stream_ids = txn.fetchall()
if not stream_ids:
return []
max_stream_id_in_limit = stream_ids[-1]
sql = (
"SELECT stream_id, user_id, device_id, message_json"
" FROM device_inbox"
" WHERE ? < stream_id AND stream_id <= ?"
" ORDER BY stream_id ASC"
)
txn.execute(sql, (last_pos, max_stream_id_in_limit))
return txn.fetchall()
return self.runInteraction(
"get_all_new_device_messages", get_all_new_device_messages_txn
)
def get_to_device_stream_token(self):
return self._device_inbox_id_gen.get_current_token()
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def get_new_device_msgs_for_remote(
self, destination, last_stream_id, current_stream_id, limit=100
):
"""
Args:
destination(str): The name of the remote server.
last_stream_id(int): The last position of the device message stream
that the server sent up to.
current_stream_id(int): The current position of the device
message stream.
Returns:
Deferred ([dict], int): List of messages for the device and where
in the stream the messages got to.
"""
has_changed = self._device_federation_outbox_stream_cache.has_entity_changed(
destination, last_stream_id
)
if not has_changed or last_stream_id == current_stream_id:
return defer.succeed(([], current_stream_id))
def get_new_messages_for_remote_destination_txn(txn):
sql = (
"SELECT stream_id, messages_json FROM device_federation_outbox"
" WHERE destination = ?"
" AND ? < stream_id AND stream_id <= ?"
" ORDER BY stream_id ASC"
" LIMIT ?"
)
txn.execute(sql, (
destination, last_stream_id, current_stream_id, limit
))
messages = []
for row in txn.fetchall():
stream_pos = row[0]
messages.append(ujson.loads(row[1]))
if len(messages) < limit:
stream_pos = current_stream_id
return (messages, stream_pos)
return self.runInteraction(
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"get_new_device_msgs_for_remote",
get_new_messages_for_remote_destination_txn,
)
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def delete_device_msgs_for_remote(self, destination, up_to_stream_id):
"""Used to delete messages when the remote destination acknowledges
their receipt.
Args:
destination(str): The destination server_name
up_to_stream_id(int): Where to delete messages up to.
Returns:
A deferred that resolves when the messages have been deleted.
"""
def delete_messages_for_remote_destination_txn(txn):
sql = (
"DELETE FROM device_federation_outbox"
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" WHERE destination = ?"
" AND stream_id <= ?"
)
txn.execute(sql, (destination, up_to_stream_id))
return self.runInteraction(
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"delete_device_msgs_for_remote",
delete_messages_for_remote_destination_txn
)