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Add missing type hints to synapse.replication. (#11938)

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Patrick Cloke 2022-02-08 11:03:08 -05:00 • committed by GitHub
parent 8c94b3abe9
commit d0e78af35e
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19 changed files with 209 additions and 147 deletions
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68
synapse/replication/tcp/protocol.py
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@ -49,7 +49,7 @@ import fcntl
import logging
import struct
from inspect import isawaitable
from typing import TYPE_CHECKING, Collection, List, Optional
from typing import TYPE_CHECKING, Any, Collection, List, Optional
from prometheus_client import Counter
from zope.interface import Interface, implementer
@ -123,7 +123,7 @@ class ConnectionStates:
class IReplicationConnection(Interface):
"""An interface for replication connections."""
def send_command(cmd: Command):
def send_command(cmd: Command) -> None:
"""Send the command down the connection"""
@ -190,7 +190,7 @@ class BaseReplicationStreamProtocol(LineOnlyReceiver):
"replication-conn", self.conn_id
)
def connectionMade(self):
def connectionMade(self) -> None:
logger.info("[%s] Connection established", self.id())
self.state = ConnectionStates.ESTABLISHED
@ -207,11 +207,11 @@ class BaseReplicationStreamProtocol(LineOnlyReceiver):
# Always send the initial PING so that the other side knows that they
# can time us out.
self.send_command(PingCommand(self.clock.time_msec()))
self.send_command(PingCommand(str(self.clock.time_msec())))
self.command_handler.new_connection(self)
def send_ping(self):
def send_ping(self) -> None:
"""Periodically sends a ping and checks if we should close the connection
due to the other side timing out.
"""
@ -226,7 +226,7 @@ class BaseReplicationStreamProtocol(LineOnlyReceiver):
self.transport.abortConnection()
else:
if now - self.last_sent_command >= PING_TIME:
self.send_command(PingCommand(now))
self.send_command(PingCommand(str(now)))
if (
self.received_ping
@ -239,12 +239,12 @@ class BaseReplicationStreamProtocol(LineOnlyReceiver):
)
self.send_error("ping timeout")
def lineReceived(self, line: bytes):
def lineReceived(self, line: bytes) -> None:
"""Called when we've received a line"""
with PreserveLoggingContext(self._logging_context):
self._parse_and_dispatch_line(line)
def _parse_and_dispatch_line(self, line: bytes):
def _parse_and_dispatch_line(self, line: bytes) -> None:
if line.strip() == "":
# Ignore blank lines
return
@ -309,24 +309,24 @@ class BaseReplicationStreamProtocol(LineOnlyReceiver):
if not handled:
logger.warning("Unhandled command: %r", cmd)
def close(self):
def close(self) -> None:
logger.warning("[%s] Closing connection", self.id())
self.time_we_closed = self.clock.time_msec()
assert self.transport is not None
self.transport.loseConnection()
self.on_connection_closed()
def send_error(self, error_string, *args):
def send_error(self, error_string: str, *args: Any) -> None:
"""Send an error to remote and close the connection."""
self.send_command(ErrorCommand(error_string % args))
self.close()
def send_command(self, cmd, do_buffer=True):
def send_command(self, cmd: Command, do_buffer: bool = True) -> None:
"""Send a command if connection has been established.
Args:
cmd (Command)
do_buffer (bool): Whether to buffer the message or always attempt
cmd
do_buffer: Whether to buffer the message or always attempt
to send the command. This is mostly used to send an error
message if we're about to close the connection due our buffers
becoming full.
@ -357,7 +357,7 @@ class BaseReplicationStreamProtocol(LineOnlyReceiver):
self.last_sent_command = self.clock.time_msec()
def _queue_command(self, cmd):
def _queue_command(self, cmd: Command) -> None:
"""Queue the command until the connection is ready to write to again."""
logger.debug("[%s] Queueing as conn %r, cmd: %r", self.id(), self.state, cmd)
self.pending_commands.append(cmd)
@ -370,20 +370,20 @@ class BaseReplicationStreamProtocol(LineOnlyReceiver):
self.send_command(ErrorCommand("Failed to keep up"), do_buffer=False)
self.close()
def _send_pending_commands(self):
def _send_pending_commands(self) -> None:
"""Send any queued commandes"""
pending = self.pending_commands
self.pending_commands = []
for cmd in pending:
self.send_command(cmd)
def on_PING(self, line):
def on_PING(self, cmd: PingCommand) -> None:
self.received_ping = True
def on_ERROR(self, cmd):
def on_ERROR(self, cmd: ErrorCommand) -> None:
logger.error("[%s] Remote reported error: %r", self.id(), cmd.data)
def pauseProducing(self):
def pauseProducing(self) -> None:
"""This is called when both the kernel send buffer and the twisted
tcp connection send buffers have become full.
@ -394,26 +394,26 @@ class BaseReplicationStreamProtocol(LineOnlyReceiver):
logger.info("[%s] Pause producing", self.id())
self.state = ConnectionStates.PAUSED
def resumeProducing(self):
def resumeProducing(self) -> None:
"""The remote has caught up after we started buffering!"""
logger.info("[%s] Resume producing", self.id())
self.state = ConnectionStates.ESTABLISHED
self._send_pending_commands()
def stopProducing(self):
def stopProducing(self) -> None:
"""We're never going to send any more data (normally because either
we or the remote has closed the connection)
"""
logger.info("[%s] Stop producing", self.id())
self.on_connection_closed()
def connectionLost(self, reason):
def connectionLost(self, reason: Failure) -> None: # type: ignore[override]
logger.info("[%s] Replication connection closed: %r", self.id(), reason)
if isinstance(reason, Failure):
assert reason.type is not None
connection_close_counter.labels(reason.type.__name__).inc()
else:
connection_close_counter.labels(reason.__class__.__name__).inc()
connection_close_counter.labels(reason.__class__.__name__).inc() # type: ignore[unreachable]
try:
# Remove us from list of connections to be monitored
@ -427,7 +427,7 @@ class BaseReplicationStreamProtocol(LineOnlyReceiver):
self.on_connection_closed()
def on_connection_closed(self):
def on_connection_closed(self) -> None:
logger.info("[%s] Connection was closed", self.id())
self.state = ConnectionStates.CLOSED
@ -445,7 +445,7 @@ class BaseReplicationStreamProtocol(LineOnlyReceiver):
# the sentinel context is now active, which may not be correct.
# PreserveLoggingContext() will restore the correct logging context.
def __str__(self):
def __str__(self) -> str:
addr = None
if self.transport:
addr = str(self.transport.getPeer())
@ -455,10 +455,10 @@ class BaseReplicationStreamProtocol(LineOnlyReceiver):
addr,
)
def id(self):
def id(self) -> str:
return "%s-%s" % (self.name, self.conn_id)
def lineLengthExceeded(self, line):
def lineLengthExceeded(self, line: str) -> None:
"""Called when we receive a line that is above the maximum line length"""
self.send_error("Line length exceeded")
@ -474,11 +474,11 @@ class ServerReplicationStreamProtocol(BaseReplicationStreamProtocol):
self.server_name = server_name
def connectionMade(self):
def connectionMade(self) -> None:
self.send_command(ServerCommand(self.server_name))
super().connectionMade()
def on_NAME(self, cmd):
def on_NAME(self, cmd: NameCommand) -> None:
logger.info("[%s] Renamed to %r", self.id(), cmd.data)
self.name = cmd.data
@ -500,19 +500,19 @@ class ClientReplicationStreamProtocol(BaseReplicationStreamProtocol):
self.client_name = client_name
self.server_name = server_name
def connectionMade(self):
def connectionMade(self) -> None:
self.send_command(NameCommand(self.client_name))
super().connectionMade()
# Once we've connected subscribe to the necessary streams
self.replicate()
def on_SERVER(self, cmd):
def on_SERVER(self, cmd: ServerCommand) -> None:
if cmd.data != self.server_name:
logger.error("[%s] Connected to wrong remote: %r", self.id(), cmd.data)
self.send_error("Wrong remote")
def replicate(self):
def replicate(self) -> None:
"""Send the subscription request to the server"""
logger.info("[%s] Subscribing to replication streams", self.id())
@ -529,7 +529,7 @@ pending_commands = LaterGauge(
)
def transport_buffer_size(protocol):
def transport_buffer_size(protocol: BaseReplicationStreamProtocol) -> int:
if protocol.transport:
size = len(protocol.transport.dataBuffer) + protocol.transport._tempDataLen
return size
@ -544,7 +544,9 @@ transport_send_buffer = LaterGauge(
)
def transport_kernel_read_buffer_size(protocol, read=True):
def transport_kernel_read_buffer_size(
protocol: BaseReplicationStreamProtocol, read: bool = True
) -> int:
SIOCINQ = 0x541B
SIOCOUTQ = 0x5411