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Add type hints for the federation sender. (#9681)

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Includes an abstract base class which both the FederationSender
and the FederationRemoteSendQueue must implement.
This commit is contained in:
Patrick Cloke 2021-03-29 11:43:20 -04:00 committed by GitHub
parent 4bbd535450
commit da75d2ea1f
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7 changed files with 177 additions and 59 deletions
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1
changelog.d/9681.misc Normal file
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@ -0,0 +1 @@
Add additional type hints to the Homeserver object.

7
synapse/app/generic_worker.py
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@ -787,13 +787,6 @@ class FederationSenderHandler:
self._fed_position_linearizer = Linearizer(name="_fed_position_linearizer")
def on_start(self):
# There may be some events that are persisted but haven't been sent,
# so send them now.
self.federation_sender.notify_new_events(
self.store.get_room_max_stream_ordering()
)
def wake_destination(self, server: str):
self.federation_sender.wake_destination(server)

88
synapse/federation/send_queue.py
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@ -31,25 +31,39 @@ Events are replicated via a separate events stream.
import logging
from collections import namedtuple
from typing import Dict, List, Tuple, Type
from typing import (
TYPE_CHECKING,
Dict,
Hashable,
Iterable,
List,
Optional,
Sized,
Tuple,
Type,
)
from sortedcontainers import SortedDict
from twisted.internet import defer
from synapse.api.presence import UserPresenceState
from synapse.federation.sender import AbstractFederationSender, FederationSender
from synapse.metrics import LaterGauge
from synapse.replication.tcp.streams.federation import FederationStream
from synapse.types import JsonDict, ReadReceipt, RoomStreamToken
from synapse.util.metrics import Measure
from .units import Edu
if TYPE_CHECKING:
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
class FederationRemoteSendQueue:
class FederationRemoteSendQueue(AbstractFederationSender):
"""A drop in replacement for FederationSender"""
def __init__(self, hs):
def __init__(self, hs: "HomeServer"):
self.server_name = hs.hostname
self.clock = hs.get_clock()
self.notifier = hs.get_notifier()
@ -58,7 +72,7 @@ class FederationRemoteSendQueue:
# We may have multiple federation sender instances, so we need to track
# their positions separately.
self._sender_instances = hs.config.worker.federation_shard_config.instances
self._sender_positions = {}
self._sender_positions = {} # type: Dict[str, int]
# Pending presence map user_id -> UserPresenceState
self.presence_map = {} # type: Dict[str, UserPresenceState]
@ -71,7 +85,7 @@ class FederationRemoteSendQueue:
# Stream position -> (user_id, destinations)
self.presence_destinations = (
SortedDict()
) # type: SortedDict[int, Tuple[str, List[str]]]
) # type: SortedDict[int, Tuple[str, Iterable[str]]]
# (destination, key) -> EDU
self.keyed_edu = {} # type: Dict[Tuple[str, tuple], Edu]
@ -94,7 +108,7 @@ class FederationRemoteSendQueue:
# we make a new function, so we need to make a new function so the inner
# lambda binds to the queue rather than to the name of the queue which
# changes. ARGH.
def register(name, queue):
def register(name: str, queue: Sized) -> None:
LaterGauge(
"synapse_federation_send_queue_%s_size" % (queue_name,),
"",
@ -115,13 +129,13 @@ class FederationRemoteSendQueue:
self.clock.looping_call(self._clear_queue, 30 * 1000)
def _next_pos(self):
def _next_pos(self) -> int:
pos = self.pos
self.pos += 1
self.pos_time[self.clock.time_msec()] = pos
return pos
def _clear_queue(self):
def _clear_queue(self) -> None:
"""Clear the queues for anything older than N minutes"""
FIVE_MINUTES_AGO = 5 * 60 * 1000
@ -138,7 +152,7 @@ class FederationRemoteSendQueue:
self._clear_queue_before_pos(position_to_delete)
def _clear_queue_before_pos(self, position_to_delete):
def _clear_queue_before_pos(self, position_to_delete: int) -> None:
"""Clear all the queues from before a given position"""
with Measure(self.clock, "send_queue._clear"):
# Delete things out of presence maps
@ -188,13 +202,18 @@ class FederationRemoteSendQueue:
for key in keys[:i]:
del self.edus[key]
def notify_new_events(self, max_token):
def notify_new_events(self, max_token: RoomStreamToken) -> None:
"""As per FederationSender"""
# We don't need to replicate this as it gets sent down a different
# stream.
pass
# This should never get called.
raise NotImplementedError()
def build_and_send_edu(self, destination, edu_type, content, key=None):
def build_and_send_edu(
self,
destination: str,
edu_type: str,
content: JsonDict,
key: Optional[Hashable] = None,
) -> None:
"""As per FederationSender"""
if destination == self.server_name:
logger.info("Not sending EDU to ourselves")
@ -218,38 +237,39 @@ class FederationRemoteSendQueue:
self.notifier.on_new_replication_data()
def send_read_receipt(self, receipt):
async def send_read_receipt(self, receipt: ReadReceipt) -> None:
"""As per FederationSender
Args:
receipt (synapse.types.ReadReceipt):
receipt:
"""
# nothing to do here: the replication listener will handle it.
return defer.succeed(None)
def send_presence(self, states):
def send_presence(self, states: List[UserPresenceState]) -> None:
"""As per FederationSender
Args:
states (list(UserPresenceState))
states
"""
pos = self._next_pos()
# We only want to send presence for our own users, so lets always just
# filter here just in case.
local_states = list(filter(lambda s: self.is_mine_id(s.user_id), states))
local_states = [s for s in states if self.is_mine_id(s.user_id)]
self.presence_map.update({state.user_id: state for state in local_states})
self.presence_changed[pos] = [state.user_id for state in local_states]
self.notifier.on_new_replication_data()
def send_presence_to_destinations(self, states, destinations):
def send_presence_to_destinations(
self, states: Iterable[UserPresenceState], destinations: Iterable[str]
) -> None:
"""As per FederationSender
Args:
states (list[UserPresenceState])
destinations (list[str])
states
destinations
"""
for state in states:
pos = self._next_pos()
@ -258,15 +278,18 @@ class FederationRemoteSendQueue:
self.notifier.on_new_replication_data()
def send_device_messages(self, destination):
def send_device_messages(self, destination: str) -> None:
"""As per FederationSender"""
# We don't need to replicate this as it gets sent down a different
# stream.
def get_current_token(self):
def wake_destination(self, server: str) -> None:
pass
def get_current_token(self) -> int:
return self.pos - 1
def federation_ack(self, instance_name, token):
def federation_ack(self, instance_name: str, token: int) -> None:
if self._sender_instances:
# If we have configured multiple federation sender instances we need
# to track their positions separately, and only clear the queue up
@ -504,13 +527,16 @@ ParsedFederationStreamData = namedtuple(
)
def process_rows_for_federation(transaction_queue, rows):
def process_rows_for_federation(
transaction_queue: FederationSender,
rows: List[FederationStream.FederationStreamRow],
) -> None:
"""Parse a list of rows from the federation stream and put them in the
transaction queue ready for sending to the relevant homeservers.
Args:
transaction_queue (FederationSender)
rows (list(synapse.replication.tcp.streams.federation.FederationStream.FederationStreamRow))
transaction_queue
rows
"""
# The federation stream contains a bunch of different types of

116
synapse/federation/sender/__init__.py
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@ -13,14 +13,14 @@
# See the License for the specific language governing permissions and
# limitations under the License.
import abc
import logging
from typing import Dict, Hashable, Iterable, List, Optional, Set, Tuple
from typing import TYPE_CHECKING, Dict, Hashable, Iterable, List, Optional, Set, Tuple
from prometheus_client import Counter
from twisted.internet import defer
import synapse
import synapse.metrics
from synapse.api.presence import UserPresenceState
from synapse.events import EventBase
@ -40,9 +40,12 @@ from synapse.metrics import (
events_processed_counter,
)
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.types import ReadReceipt, RoomStreamToken
from synapse.types import JsonDict, ReadReceipt, RoomStreamToken
from synapse.util.metrics import Measure, measure_func
if TYPE_CHECKING:
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
sent_pdus_destination_dist_count = Counter(
@ -65,8 +68,91 @@ CATCH_UP_STARTUP_DELAY_SEC = 15
CATCH_UP_STARTUP_INTERVAL_SEC = 5
class FederationSender:
def __init__(self, hs: "synapse.server.HomeServer"):
class AbstractFederationSender(metaclass=abc.ABCMeta):
@abc.abstractmethod
def notify_new_events(self, max_token: RoomStreamToken) -> None:
"""This gets called when we have some new events we might want to
send out to other servers.
"""
raise NotImplementedError()
@abc.abstractmethod
async def send_read_receipt(self, receipt: ReadReceipt) -> None:
"""Send a RR to any other servers in the room
Args:
receipt: receipt to be sent
"""
raise NotImplementedError()
@abc.abstractmethod
def send_presence(self, states: List[UserPresenceState]) -> None:
"""Send the new presence states to the appropriate destinations.
This actually queues up the presence states ready for sending and
triggers a background task to process them and send out the transactions.
"""
raise NotImplementedError()
@abc.abstractmethod
def send_presence_to_destinations(
self, states: Iterable[UserPresenceState], destinations: Iterable[str]
) -> None:
"""Send the given presence states to the given destinations.
Args:
destinations:
"""
raise NotImplementedError()
@abc.abstractmethod
def build_and_send_edu(
self,
destination: str,
edu_type: str,
content: JsonDict,
key: Optional[Hashable] = None,
) -> None:
"""Construct an Edu object, and queue it for sending
Args:
destination: name of server to send to
edu_type: type of EDU to send
content: content of EDU
key: clobbering key for this edu
"""
raise NotImplementedError()
@abc.abstractmethod
def send_device_messages(self, destination: str) -> None:
raise NotImplementedError()
@abc.abstractmethod
def wake_destination(self, destination: str) -> None:
"""Called when we want to retry sending transactions to a remote.
This is mainly useful if the remote server has been down and we think it
might have come back.
"""
raise NotImplementedError()
@abc.abstractmethod
def get_current_token(self) -> int:
raise NotImplementedError()
@abc.abstractmethod
def federation_ack(self, instance_name: str, token: int) -> None:
raise NotImplementedError()
@abc.abstractmethod
async def get_replication_rows(
self, instance_name: str, from_token: int, to_token: int, target_row_count: int
) -> Tuple[List[Tuple[int, Tuple]], int, bool]:
raise NotImplementedError()
class FederationSender(AbstractFederationSender):
def __init__(self, hs: "HomeServer"):
self.hs = hs
self.server_name = hs.hostname
@ -432,7 +518,7 @@ class FederationSender:
queue.flush_read_receipts_for_room(room_id)
@preserve_fn # the caller should not yield on this
async def send_presence(self, states: List[UserPresenceState]):
async def send_presence(self, states: List[UserPresenceState]) -> None:
"""Send the new presence states to the appropriate destinations.
This actually queues up the presence states ready for sending and
@ -494,7 +580,7 @@ class FederationSender:
self._get_per_destination_queue(destination).send_presence(states)
@measure_func("txnqueue._process_presence")
async def _process_presence_inner(self, states: List[UserPresenceState]):
async def _process_presence_inner(self, states: List[UserPresenceState]) -> None:
"""Given a list of states populate self.pending_presence_by_dest and
poke to send a new transaction to each destination
"""
@ -516,9 +602,9 @@ class FederationSender:
self,
destination: str,
edu_type: str,
content: dict,
content: JsonDict,
key: Optional[Hashable] = None,
):
) -> None:
"""Construct an Edu object, and queue it for sending
Args:
@ -545,7 +631,7 @@ class FederationSender:
self.send_edu(edu, key)
def send_edu(self, edu: Edu, key: Optional[Hashable]):
def send_edu(self, edu: Edu, key: Optional[Hashable]) -> None:
"""Queue an EDU for sending
Args:
@ -563,7 +649,7 @@ class FederationSender:
else:
queue.send_edu(edu)
def send_device_messages(self, destination: str):
def send_device_messages(self, destination: str) -> None:
if destination == self.server_name:
logger.warning("Not sending device update to ourselves")
return
@ -575,7 +661,7 @@ class FederationSender:
self._get_per_destination_queue(destination).attempt_new_transaction()
def wake_destination(self, destination: str):
def wake_destination(self, destination: str) -> None:
"""Called when we want to retry sending transactions to a remote.
This is mainly useful if the remote server has been down and we think it
@ -599,6 +685,10 @@ class FederationSender:
# to a worker.
return 0
def federation_ack(self, instance_name: str, token: int) -> None:
# It is not expected that this gets called on FederationSender.
raise NotImplementedError()
@staticmethod
async def get_replication_rows(
instance_name: str, from_token: int, to_token: int, target_row_count: int
@ -607,7 +697,7 @@ class FederationSender:
# to a worker.
return [], 0, False
async def _wake_destinations_needing_catchup(self):
async def _wake_destinations_needing_catchup(self) -> None:
"""
Wakes up destinations that need catch-up and are not currently being
backed off from.

6
synapse/replication/tcp/commands.py
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@ -312,16 +312,16 @@ class FederationAckCommand(Command):
NAME = "FEDERATION_ACK"
def __init__(self, instance_name, token):
def __init__(self, instance_name: str, token: int):
self.instance_name = instance_name
self.token = token
@classmethod
def from_line(cls, line):
def from_line(cls, line: str) -> "FederationAckCommand":
instance_name, token = line.split(" ")
return cls(instance_name, int(token))
def to_line(self):
def to_line(self) -> str:
return "%s %s" % (self.instance_name, self.token)

14
synapse/replication/tcp/streams/federation.py
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@ -14,6 +14,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
from collections import namedtuple
from typing import TYPE_CHECKING, Any, Awaitable, Callable, List, Tuple
from synapse.replication.tcp.streams._base import (
Stream,
@ -21,6 +22,9 @@ from synapse.replication.tcp.streams._base import (
make_http_update_function,
)
if TYPE_CHECKING:
from synapse.server import HomeServer
class FederationStream(Stream):
"""Data to be sent over federation. Only available when master has federation
@ -38,7 +42,7 @@ class FederationStream(Stream):
NAME = "federation"
ROW_TYPE = FederationStreamRow
def __init__(self, hs):
def __init__(self, hs: "HomeServer"):
if hs.config.worker_app is None:
# master process: get updates from the FederationRemoteSendQueue.
# (if the master is configured to send federation itself, federation_sender
@ -48,7 +52,9 @@ class FederationStream(Stream):
current_token = current_token_without_instance(
federation_sender.get_current_token
)
update_function = federation_sender.get_replication_rows
update_function = (
federation_sender.get_replication_rows
) # type: Callable[[str, int, int, int], Awaitable[Tuple[List[Tuple[int, Any]], int, bool]]]
elif hs.should_send_federation():
# federation sender: Query master process
@ -69,5 +75,7 @@ class FederationStream(Stream):
return 0
@staticmethod
async def _stub_update_function(instance_name, from_token, upto_token, limit):
async def _stub_update_function(
instance_name: str, from_token: int, upto_token: int, limit: int
) -> Tuple[list, int, bool]:
return [], upto_token, False

4
synapse/server.py
View File

@ -60,7 +60,7 @@ from synapse.federation.federation_server import (
FederationServer,
)
from synapse.federation.send_queue import FederationRemoteSendQueue
from synapse.federation.sender import FederationSender
from synapse.federation.sender import AbstractFederationSender, FederationSender
from synapse.federation.transport.client import TransportLayerClient
from synapse.groups.attestations import GroupAttestationSigning, GroupAttestionRenewer
from synapse.groups.groups_server import GroupsServerHandler, GroupsServerWorkerHandler
@ -571,7 +571,7 @@ class HomeServer(metaclass=abc.ABCMeta):
return TransportLayerClient(self)
@cache_in_self
def get_federation_sender(self):
def get_federation_sender(self) -> AbstractFederationSender:
if self.should_send_federation():
return FederationSender(self)
elif not self.config.worker_app: