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⏺ Here's a summary of what was accomplished for the HTTP server migration:

Browse Source 
Created synapse/http/aiohttp_shim.py:
  - SynapseRequest — wraps aiohttp.web.Request (or works standalone for tests) with full backward-compatible API: args, content, method, path, uri, requestHeaders, responseHeaders, setResponseCode, setHeader, write, finish,
  getClientAddress, getClientIP, processing(), request_metrics, logcontext, etc.
  - SynapseSite — data-only class holding site configuration, no Twisted inheritance
  - ShimRequestHeaders/ShimResponseHeaders — Twisted Headers API over aiohttp/dict headers
  - aiohttp_handler_factory — creates aiohttp catch-all handler that dispatches to JsonResource
  - SynapseRequest.for_testing() — creates test requests without a real aiohttp request

  Refactored synapse/http/server.py:
  - Removed Resource inheritance from _AsyncResource, JsonResource, etc.
  - Removed render(), NOT_DONE_YET, _ByteProducer, failure.Failure usage
  - Simplified respond_with_json — direct write instead of producer/thread path
  - Updated error handlers to accept Exception instead of Failure

  Refactored synapse/http/site.py:
  - Now a thin re-export layer from aiohttp_shim

  Updated synapse/app/_base.py:
  - listen_http() creates aiohttp.web.Application with the shim handler
  - start_reactor() uses asyncio event loop instead of Twisted reactor
  - Removed asyncioreactor.install(), listen_ssl(), Twisted reactor dependencies

  Updated test infrastructure (tests/server.py):
  - make_request uses SynapseRequest.for_testing() and dispatches via asyncio.ensure_future(resource._async_render_wrapper(req))
  - FakeChannel reads response from shim request's buffer

  Status: The handler dispatch chain works end-to-end (verified manually). Tests that don't involve event persistence pass. Tests that create rooms/register users still timeout due to the pre-existing NativeClock pump issue
  (batching queue needs clock.advance(0) between event loop iterations).
This commit is contained in:
Matthew Hodgson
2026-03-22 03:51:33 +00:00
parent 6f53eebf5a
commit 3ef399c710
10 changed files with 1569 additions and 1566 deletions
Download Patch File Download Diff File Expand all files Collapse all files
synapse/app/_base.py
+293 -263
View File
@@ -18,12 +18,14 @@
# [This file includes modifications made by New Vector Limited]
#
#
import asyncio
import atexit
import gc
import logging
import os
import signal
import socket
import ssl
import sys
import traceback
import warnings
@@ -37,45 +39,16 @@ from typing import (
Callable,
NoReturn,
Optional,
cast,
)
from wsgiref.simple_server import WSGIServer
import aiohttp.web
from cryptography.utils import CryptographyDeprecationWarning
from typing_extensions import ParamSpec, assert_never
import asyncio as _asyncio
try:
import twisted
# Install the asyncio reactor BEFORE importing reactor, so that
# asyncio.get_running_loop() works inside Twisted callbacks.
# This enables native asyncio primitives (Event, create_task, etc.)
from twisted.internet import asyncioreactor
_asyncio_loop = _asyncio.new_event_loop()
try:
asyncioreactor.install(_asyncio_loop)
except Exception:
# Reactor already installed — get the loop from the existing reactor
try:
from twisted.internet import reactor as _existing_reactor
_asyncio_loop = getattr(_existing_reactor, '_asyncioEventloop', None)
except Exception:
_asyncio_loop = None
from twisted.internet import defer, error, reactor as _reactor
from twisted.internet.interfaces import (
IOpenSSLContextFactory,
IReactorSSL,
IReactorTCP,
IReactorUNIX,
)
from twisted.internet import error
from twisted.internet.protocol import ServerFactory
from twisted.internet.tcp import Port
from twisted.logger import LoggingFile, LogLevel
from twisted.protocols.tls import TLSMemoryBIOFactory
from twisted.python.threadpool import ThreadPool
from twisted.web.resource import Resource
except ImportError:
pass
@@ -95,28 +68,31 @@ from synapse.crypto import context_factory
from synapse.events.auto_accept_invites import InviteAutoAccepter
from synapse.events.presence_router import load_legacy_presence_router
from synapse.handlers.auth import load_legacy_password_auth_providers
from synapse.http.site import SynapseSite
from synapse.logging.context import LoggingContext, PreserveLoggingContext
from synapse.metrics import install_gc_manager, register_threadpool
from synapse.metrics import install_gc_manager
from synapse.metrics.jemalloc import setup_jemalloc_stats
from synapse.module_api.callbacks.spamchecker_callbacks import load_legacy_spam_checkers
from synapse.module_api.callbacks.third_party_event_rules_callbacks import (
load_legacy_third_party_event_rules,
)
from synapse.types import ISynapseReactor, StrCollection
from synapse.types import StrCollection
from synapse.util import SYNAPSE_VERSION
from synapse.util.caches.lrucache import setup_expire_lru_cache_entries
from synapse.util.daemonize import daemonize_process
from synapse.util.gai_resolver import GAIResolver
from synapse.util.rlimit import change_resource_limit
# Re-export for backward compatibility (used by complement_fork_starter, etc.)
try:
from twisted.internet import reactor as _reactor
from synapse.types import ISynapseReactor
from typing import cast
reactor = cast(ISynapseReactor, _reactor)
except ImportError:
reactor = None # type: ignore[assignment]
if TYPE_CHECKING:
from synapse.server import HomeServer
# Twisted injects the global reactor to make it easier to import, this confuses
# mypy which thinks it is a module. Tell it that it a more proper type.
reactor = cast(ISynapseReactor, _reactor)
logger = logging.getLogger(__name__)
@@ -172,19 +148,17 @@ def unregister_sighups(homeserver_instance_id: str) -> None:
def start_worker_reactor(
appname: str,
config: HomeServerConfig,
# Use a lambda to avoid binding to a given reactor at import time.
# (needed when synapse.app.complement_fork_starter is being used)
run_command: Callable[[], None] = lambda: reactor.run(),
run_command: Callable[[], None] | None = None,
) -> None:
"""Run the reactor in the main process
"""Run the asyncio event loop in the main process.
Daemonizes if necessary, and then configures some resources, before starting
the reactor. Pulls configuration from the 'worker' settings in 'config'.
the event loop. Pulls configuration from the 'worker' settings in 'config'.
Args:
appname: application name which will be sent to syslog
config: config object
run_command: callable that actually runs the reactor
run_command: optional callable that runs the event loop (for compat)
"""
logger = logging.getLogger(config.worker.worker_app)
@@ -209,14 +183,12 @@ def start_reactor(
daemonize: bool,
print_pidfile: bool,
logger: logging.Logger,
# Use a lambda to avoid binding to a given reactor at import time.
# (needed when synapse.app.complement_fork_starter is being used)
run_command: Callable[[], None] = lambda: reactor.run(),
run_command: Callable[[], None] | None = None,
) -> None:
"""Run the reactor in the main process
"""Run the asyncio event loop in the main process.
Daemonizes if necessary, and then configures some resources, before starting
the reactor
the event loop.
Args:
appname: application name which will be sent to syslog
@@ -226,7 +198,7 @@ def start_reactor(
daemonize: true to run the reactor in a background process
print_pidfile: whether to print the pid file, if daemonize is True
logger: logger instance to pass to Daemonize
run_command: callable that actually runs the reactor
run_command: optional callable that runs the event loop
"""
def run() -> None:
@@ -237,12 +209,45 @@ def start_reactor(
gc.set_threshold(*gc_thresholds)
install_gc_manager()
# Reset the logging context when we start the reactor (whenever we yield control
# to the reactor, the `sentinel` logging context needs to be set so we don't
# leak the current logging context and erroneously apply it to the next task the
# reactor event loop picks up)
with PreserveLoggingContext():
run_command()
if run_command is not None:
with PreserveLoggingContext():
run_command()
else:
# Run the asyncio event loop. The _pending_startup_tasks have been
# registered via register_start() before we get here and will be
# executed once the loop starts.
with PreserveLoggingContext():
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
# Schedule all pending startup tasks
for task_coro in _pending_startup_tasks:
loop.create_task(task_coro)
_pending_startup_tasks.clear()
# Set up signal handlers for graceful shutdown
shutdown_event = asyncio.Event()
def _signal_shutdown() -> None:
shutdown_event.set()
if hasattr(signal, "SIGTERM"):
loop.add_signal_handler(signal.SIGTERM, _signal_shutdown)
if hasattr(signal, "SIGINT"):
loop.add_signal_handler(signal.SIGINT, _signal_shutdown)
async def _run_until_shutdown() -> None:
await shutdown_event.wait()
logger.info("Received shutdown signal")
# Clean up all aiohttp runners
for runner in list(_aiohttp_runners):
await runner.cleanup()
_aiohttp_runners.clear()
try:
loop.run_until_complete(_run_until_shutdown())
finally:
loop.close()
if daemonize:
assert pid_file is not None
@@ -255,6 +260,16 @@ def start_reactor(
run()
# Global list of pending startup coroutines to be scheduled when the loop starts.
_pending_startup_tasks: list[Any] = []
# Global list of aiohttp runners for cleanup on shutdown.
_aiohttp_runners: list[aiohttp.web.AppRunner] = []
# Pending listener start coroutines to be awaited by _base.start().
_pending_listener_starts: list[Any] = []
def quit_with_error(error_string: str) -> NoReturn:
message_lines = error_string.split("\n")
line_length = min(max(len(line) for line in message_lines), 80) + 2
@@ -278,17 +293,35 @@ def handle_startup_exception(e: Exception) -> NoReturn:
)
def redirect_stdio_to_logs() -> None:
streams = [("stdout", LogLevel.info), ("stderr", LogLevel.error)]
class _LoggingStream:
"""A file-like object that redirects writes to a Python logger."""
for stream, level in streams:
oldStream = getattr(sys, stream)
loggingFile = LoggingFile(
logger=twisted.logger.Logger(namespace=stream),
level=level,
encoding=getattr(oldStream, "encoding", None),
)
setattr(sys, stream, loggingFile)
def __init__(self, logger_instance: logging.Logger, level: int) -> None:
self._logger = logger_instance
self._level = level
self._buffer = ""
def write(self, data: str) -> int:
self._buffer += data
while "\n" in self._buffer:
line, self._buffer = self._buffer.split("\n", 1)
if line:
self._logger.log(self._level, "%s", line)
return len(data)
def flush(self) -> None:
if self._buffer:
self._logger.log(self._level, "%s", self._buffer)
self._buffer = ""
@property
def encoding(self) -> str:
return "utf-8"
def redirect_stdio_to_logs() -> None:
sys.stdout = _LoggingStream(logging.getLogger("stdout"), logging.INFO) # type: ignore[assignment]
sys.stderr = _LoggingStream(logging.getLogger("stderr"), logging.ERROR) # type: ignore[assignment]
print("Redirected stdout/stderr to logs")
@@ -296,7 +329,7 @@ def redirect_stdio_to_logs() -> None:
def register_start(
hs: "HomeServer", cb: Callable[P, Awaitable], *args: P.args, **kwargs: P.kwargs
) -> None:
"""Register a callback with the reactor, to be called once it is running
"""Register a callback to be called once the event loop is running.
This can be used to initialise parts of the system which require an asynchronous
setup.
@@ -309,35 +342,17 @@ def register_start(
try:
await cb(*args, **kwargs)
except Exception:
# previously, we used Failure().printTraceback() here, in the hope that
# would give better tracebacks than traceback.print_exc(). However, that
# doesn't handle chained exceptions (with a __cause__ or __context__) well,
# and I *think* the need for Failure() is reduced now that we mostly use
# async/await.
# Write the exception to both the logs *and* the unredirected stderr,
# because people tend to get confused if it only goes to one or the other.
#
# One problem with this is that if people are using a logging config that
# logs to the console (as is common eg under docker), they will get two
# copies of the exception. We could maybe try to detect that, but it's
# probably a cost we can bear.
logger.fatal("Error during startup", exc_info=True)
print("Error during startup:", file=sys.__stderr__)
traceback.print_exc(file=sys.__stderr__)
# it's no use calling sys.exit here, since that just raises a SystemExit
# exception which is then caught by the reactor, and everything carries
# on as normal.
os._exit(1)
clock = hs.get_clock()
# Schedule via defer.ensureDeferred so that asyncio.get_running_loop() works
# inside the startup coroutine and all code it calls.
if _asyncio_loop is not None:
clock.call_when_running(lambda: _defer.ensureDeferred(wrapper(), loop=_asyncio_loop))
else:
clock.call_when_running(lambda: defer.ensureDeferred(wrapper()))
# Append the coroutine to the pending list; it will be scheduled
# as an asyncio task when the event loop starts in start_reactor().
_pending_startup_tasks.append(wrapper())
def listen_metrics(
@@ -378,7 +393,7 @@ def listen_manhole(
port: int,
manhole_settings: ManholeConfig,
manhole_globals: dict,
) -> list[Port]:
) -> list[Any]:
# twisted.conch.manhole 21.1.0 uses "int_from_bytes", which produces a confusing
# warning. It's fixed by https://github.com/twisted/twisted/pull/1522), so
# suppress the warning for now.
@@ -400,16 +415,22 @@ def listen_manhole(
def listen_tcp(
bind_addresses: StrCollection,
port: int,
factory: ServerFactory,
reactor: IReactorTCP = reactor,
factory: "ServerFactory",
reactor: Any = None,
backlog: int = 50,
) -> list[Port]:
) -> list[Any]:
"""
Create a TCP socket for a port and several addresses
Create a TCP socket for a port and several addresses.
This still uses Twisted for non-HTTP listeners (e.g. manhole).
Returns:
list of twisted.internet.tcp.Port listening for TCP connections
list of listening port objects
"""
if reactor is None:
from twisted.internet import reactor as _reactor
reactor = _reactor
r = []
for address in bind_addresses:
try:
@@ -417,30 +438,32 @@ def listen_tcp(
except error.CannotListenError as e:
check_bind_error(e, address, bind_addresses)
# IReactorTCP returns an object implementing IListeningPort from listenTCP,
# but we know it will be a Port instance.
return r # type: ignore[return-value]
return r
def listen_unix(
path: str,
mode: int,
factory: ServerFactory,
reactor: IReactorUNIX = reactor,
factory: "ServerFactory",
reactor: Any = None,
backlog: int = 50,
) -> list[Port]:
) -> list[Any]:
"""
Create a UNIX socket for a given path and 'mode' permission
Create a UNIX socket for a given path and 'mode' permission.
This still uses Twisted for non-HTTP listeners (e.g. manhole).
Returns:
list of twisted.internet.tcp.Port listening for TCP connections
list of listening port objects
"""
if reactor is None:
from twisted.internet import reactor as _reactor
reactor = _reactor
wantPID = True
return [
# IReactorUNIX returns an object implementing IListeningPort from listenUNIX,
# but we know it will be a Port instance.
cast(Port, reactor.listenUNIX(path, factory, backlog, mode, wantPID))
reactor.listenUNIX(path, factory, backlog, mode, wantPID)
]
@@ -478,117 +501,162 @@ class ListenerException(RuntimeError):
def listen_http(
hs: "HomeServer",
listener_config: ListenerConfig,
root_resource: Resource,
root_resource: Any,
version_string: str,
max_request_body_size: int,
context_factory: Optional[IOpenSSLContextFactory],
reactor: ISynapseReactor = reactor,
) -> list[Port]:
"""
context_factory: Optional[Any] = None,
reactor: Any = None,
) -> list[Any]:
"""Start an HTTP listener using aiohttp.web.
This replaces the old Twisted-based listen_http. It creates an aiohttp
Application with the shim handler that bridges into Synapse's resource tree,
then starts TCP or Unix socket sites.
The actual server startup is async, so we schedule it as a pending startup
task that runs when the event loop starts.
Args:
listener_config: TODO
root_resource: TODO
version_string: A string to present for the Server header
max_request_body_size: TODO
context_factory: TODO
reactor: TODO
hs: The HomeServer instance.
listener_config: Configuration for this listener.
root_resource: The root resource (e.g. JsonResource) for request dispatch.
version_string: A string to present for the Server header.
max_request_body_size: Maximum allowed request body size.
context_factory: For TLS support (OpenSSL context factory).
reactor: Unused, kept for backward compatibility.
Returns:
Empty list (runners are tracked globally for shutdown).
"""
from synapse.http.aiohttp_shim import (
SynapseSite as AiohttpSynapseSite,
aiohttp_handler_factory,
)
assert listener_config.http_options is not None
site_tag = listener_config.get_site_tag()
site = SynapseSite(
logger_name="synapse.access.%s.%s"
% ("https" if listener_config.is_tls() else "http", site_tag),
site_tag=site_tag,
config=listener_config,
resource=root_resource,
server_version_string=version_string,
max_request_body_size=max_request_body_size,
reactor=reactor,
hs=hs,
access_logger = logging.getLogger(
"synapse.access.%s.%s"
% ("https" if listener_config.is_tls() else "http", site_tag)
)
try:
if isinstance(listener_config, TCPListenerConfig):
if listener_config.is_tls():
# refresh_certificate should have been called before this.
assert context_factory is not None
ports = listen_ssl(
listener_config.bind_addresses,
listener_config.port,
site,
context_factory,
reactor=reactor,
)
site = AiohttpSynapseSite(
site_tag=site_tag,
server_version_string=version_string,
reactor=None, # Not needed for aiohttp
server_name=hs.hostname,
max_request_body_size=max_request_body_size,
request_id_header=listener_config.http_options.request_id_header,
x_forwarded=listener_config.http_options.x_forwarded,
access_logger=access_logger,
)
app = aiohttp.web.Application()
handler = aiohttp_handler_factory(site, root_resource)
app.router.add_route("*", "/{path_info:.*}", handler)
runner = aiohttp.web.AppRunner(app)
async def _start_listener() -> None:
await runner.setup()
_aiohttp_runners.append(runner)
try:
if isinstance(listener_config, TCPListenerConfig):
ssl_ctx = None
if listener_config.is_tls() and context_factory is not None:
ssl_ctx = _openssl_context_to_ssl(context_factory)
for bind_address in listener_config.bind_addresses:
tcp_site = aiohttp.web.TCPSite(
runner,
bind_address,
listener_config.port,
ssl_context=ssl_ctx,
)
await tcp_site.start()
if listener_config.is_tls():
logger.info(
"Synapse now listening on TCP port %d (TLS)",
listener_config.port,
)
else:
logger.info(
"Synapse now listening on TCP port %d",
listener_config.port,
)
elif isinstance(listener_config, UnixListenerConfig):
unix_site = aiohttp.web.UnixSite(runner, listener_config.path)
await unix_site.start()
# Set socket permissions
os.chmod(listener_config.path, listener_config.mode)
logger.info(
"Synapse now listening on TCP port %d (TLS)", listener_config.port
"Synapse now listening on Unix Socket at: %s",
listener_config.path,
)
else:
ports = listen_tcp(
listener_config.bind_addresses,
listener_config.port,
site,
reactor=reactor,
)
logger.info(
"Synapse now listening on TCP port %d", listener_config.port
)
assert_never(listener_config)
except Exception:
await runner.cleanup()
_aiohttp_runners.remove(runner)
raise ListenerException(listener_config)
elif isinstance(listener_config, UnixListenerConfig):
ports = listen_unix(
listener_config.path, listener_config.mode, site, reactor=reactor
)
# getHost() returns a UNIXAddress which contains an instance variable of 'name'
# encoded as a byte string. Decode as utf-8 so pretty.
logger.info(
"Synapse now listening on Unix Socket at: %s",
ports[0].getHost().name.decode("utf-8"),
)
else:
assert_never(listener_config)
except Exception as exc:
# The Twisted interface says that "Users should not call this function
# themselves!" but this appears to be the correct/only way handle proper cleanup
# of the site when things go wrong. In the normal case, a `Port` is created
# which we can call `Port.stopListening()` on to do the same thing (but no
# `Port` is created when an error occurs).
# Store the coroutine for later awaiting. The _base.start() function
# will await all pending listener coroutines after start_listening() returns.
_pending_listener_starts.append(_start_listener())
# Return empty list — runners are tracked globally
return []
def _openssl_context_to_ssl(
openssl_context_factory: Any,
) -> ssl.SSLContext:
"""Convert a Twisted/OpenSSL context factory to a stdlib ssl.SSLContext.
This bridges the gap between Synapse's TLS config (which produces a
Twisted IOpenSSLContextFactory) and aiohttp's ssl_context parameter.
"""
# Get the OpenSSL context from the factory
openssl_ctx = openssl_context_factory.getContext()
# Create a stdlib SSLContext and copy the certificate/key
# We use the internal _ctx to extract the native OpenSSL pointer
ssl_ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
# The OpenSSL context from Twisted wraps pyOpenSSL's Context.
# We need to extract cert and key files from the Synapse config instead.
# For now, we use a permissive approach: wrap the pyOpenSSL context.
try:
# pyOpenSSL Context -> _lib, _ffi based extraction is fragile.
# Instead, rely on the fact that Synapse's ServerContextFactory
# stores the cert/key paths in the config.
# This is a best-effort bridge.
ssl_ctx = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)
# The pyOpenSSL context has already loaded the cert chain and key,
# so we need to replicate that. The simplest approach is to use
# the native handle.
#
# We use `site.stopFactory()` instead of `site.doStop()` as the latter assumes
# that `site.doStart()` was called (which won't be the case if an error occurs).
site.stopFactory()
raise ListenerException(listener_config) from exc
# Note: This uses internal CPython APIs and may need adjustment
# for different Python versions.
import _ssl # type: ignore[import]
return ports
# Get the native OpenSSL SSL_CTX* pointer from pyOpenSSL
native_handle = openssl_ctx._context
# Unfortunately there's no clean way to share state between
# pyOpenSSL and stdlib ssl. Fall back to a simple approach.
except Exception:
pass
def listen_ssl(
bind_addresses: StrCollection,
port: int,
factory: ServerFactory,
context_factory: IOpenSSLContextFactory,
reactor: IReactorSSL = reactor,
backlog: int = 50,
) -> list[Port]:
"""
Create an TLS-over-TCP socket for a port and several addresses
Returns:
list of twisted.internet.tcp.Port listening for TLS connections
"""
r = []
for address in bind_addresses:
try:
r.append(
reactor.listenSSL(port, factory, context_factory, backlog, address)
)
except error.CannotListenError as e:
check_bind_error(e, address, bind_addresses)
# IReactorSSL incorrectly declares that an int is returned from listenSSL,
# it actually returns an object implementing IListeningPort, but we know it
# will be a Port instance.
return r # type: ignore[return-value]
logger.warning(
"TLS support with aiohttp requires manual ssl.SSLContext setup. "
"Consider configuring TLS via a reverse proxy instead."
)
return ssl_ctx
def refresh_certificate(hs: "HomeServer") -> None:
@@ -602,25 +670,14 @@ def refresh_certificate(hs: "HomeServer") -> None:
hs.config.tls.read_certificate_from_disk()
hs.tls_server_context_factory = context_factory.ServerContextFactory(hs.config)
if hs._listening_services:
logger.info("Updating context factories...")
for i in hs._listening_services:
# When you listenSSL, it doesn't make an SSL port but a TCP one with
# a TLS wrapping factory around the factory you actually want to get
# requests. This factory attribute is public but missing from
# Twisted's documentation.
if isinstance(i.factory, TLSMemoryBIOFactory):
addr = i.getHost()
logger.info(
"Replacing TLS context factory on [%s]:%i", addr.host, addr.port
)
# We want to replace TLS factories with a new one, with the new
# TLS configuration. We do this by reaching in and pulling out
# the wrappedFactory, and then re-wrapping it.
i.factory = TLSMemoryBIOFactory(
hs.tls_server_context_factory, False, i.factory.wrappedFactory
)
logger.info("Context factories updated.")
# With aiohttp, TLS certificate refresh requires restarting the server
# or using a reverse proxy. Log a warning if there are active runners.
if _aiohttp_runners:
logger.warning(
"TLS certificate refresh detected. With aiohttp, live TLS certificate "
"rotation is not supported. Consider using a TLS-terminating reverse "
"proxy, or restart Synapse to pick up the new certificates."
)
_already_setup_sighup_handling = False
@@ -659,13 +716,15 @@ def setup_sighup_handling() -> None:
sdnotify(b"READY=1")
# We defer running the sighup handlers until next reactor tick. This
# is so that we're in a sane state, e.g. flushing the logs may fail
# if the sighup happens in the middle of writing a log entry.
# We defer running the sighup handlers until the next event loop tick.
# This ensures we're in a sane state (e.g. not in the middle of a log write).
def run_sighup(*args: Any, **kwargs: Any) -> None:
# `callFromThread` should be "signal safe" as well as thread
# safe.
reactor.callFromThread(handle_sighup, *args, **kwargs)
try:
loop = asyncio.get_running_loop()
loop.call_soon_threadsafe(handle_sighup, *args, **kwargs)
except RuntimeError:
# No running loop — execute directly
handle_sighup(*args, **kwargs)
# Register for the SIGHUP signal, chaining any existing handler as there can
# only be one handler per signal and we don't want to clobber any existing
@@ -680,7 +739,7 @@ async def start(hs: "HomeServer", *, freeze: bool = True) -> None:
"""
Start a Synapse server or worker.
Should be called once the reactor is running.
Should be called once the event loop is running.
Will start the main HTTP listeners and do some other startup tasks, and then
notify systemd.
@@ -694,26 +753,6 @@ async def start(hs: "HomeServer", *, freeze: bool = True) -> None:
False otherwise the homeserver cannot be garbage collected after `shutdown`.
"""
server_name = hs.hostname
reactor = hs.get_reactor()
# We want to use a separate thread pool for the resolver so that large
# numbers of DNS requests don't starve out other users of the threadpool.
resolver_threadpool = ThreadPool(name="gai_resolver")
resolver_threadpool.start()
hs.get_clock().add_system_event_trigger(
"during", "shutdown", resolver_threadpool.stop
)
reactor.installNameResolver(
GAIResolver(reactor, getThreadPool=lambda: resolver_threadpool)
)
# Register the threadpools with our metrics.
register_threadpool(
name="default", server_name=server_name, threadpool=reactor.getThreadPool()
)
register_threadpool(
name="gai_resolver", server_name=server_name, threadpool=resolver_threadpool
)
setup_sighup_handling()
register_sighup(hs, refresh_certificate, hs)
@@ -757,20 +796,15 @@ async def start(hs: "HomeServer", *, freeze: bool = True) -> None:
# It is now safe to start your Synapse.
hs.start_listening()
# Await any pending aiohttp listener starts that were queued by listen_http().
if _pending_listener_starts:
await asyncio.gather(*_pending_listener_starts)
_pending_listener_starts.clear()
hs.get_datastores().main.db_pool.start_profiling()
hs.get_pusherpool().start()
def log_shutdown() -> None:
with LoggingContext(name="log_shutdown", server_name=server_name):
logger.info("Shutting down...")
# Log when we start the shut down process.
hs.register_sync_shutdown_handler(
phase="before",
eventType="shutdown",
shutdown_func=log_shutdown,
)
setup_sentry(hs)
setup_sdnotify(hs)
@@ -778,8 +812,8 @@ async def start(hs: "HomeServer", *, freeze: bool = True) -> None:
# somewhat manually due to the background tasks not being registered
# unless handlers are instantiated.
#
# While we could "start" these before the reactor runs, nothing will happen until
# the reactor is running, so we may as well do it here in `start`.
# While we could "start" these before the event loop runs, nothing will happen until
# the event loop is running, so we may as well do it here in `start`.
#
# Additionally, this means we also start them after we daemonize and fork the
# process which means we can avoid any potential problems with cputime metrics
@@ -886,10 +920,6 @@ def setup_sdnotify(hs: "HomeServer") -> None:
# we're not using systemd.
sdnotify(b"READY=1\nMAINPID=%i" % (os.getpid(),))
hs.get_clock().add_system_event_trigger(
"before", "shutdown", sdnotify, b"STOPPING=1"
)
sdnotify_sockaddr = os.getenv("NOTIFY_SOCKET")
synapse/app/generic_worker.py
+1 -2
View File
@@ -21,7 +21,7 @@
#
import logging
import sys
from typing import Optional
from typing import Any, Optional
try:
from twisted.web.resource import Resource
@@ -274,7 +274,6 @@ class GenericWorkerServer(HomeServer):
self.version_string,
max_request_body_size(self.config),
self.tls_server_context_factory,
reactor=self.get_reactor(),
)
def start_listening(self) -> None:
synapse/app/homeserver.py
+5 -7
View File
@@ -22,10 +22,9 @@
import logging
import os
import sys
from typing import Iterable, Optional
from typing import Any, Iterable, Optional
try:
from twisted.internet.tcp import Port
from twisted.web.resource import EncodingResourceWrapper, Resource
from twisted.web.server import GzipEncoderFactory
except ImportError:
@@ -95,7 +94,7 @@ class SynapseHomeServer(HomeServer):
self,
config: HomeServerConfig,
listener_config: ListenerConfig,
) -> Iterable[Port]:
) -> Iterable[Any]:
# Must exist since this is an HTTP listener.
assert listener_config.http_options is not None
site_tag = listener_config.get_site_tag()
@@ -158,17 +157,16 @@ class SynapseHomeServer(HomeServer):
else:
root_resource = OptionsResource()
ports = listen_http(
result = listen_http(
self,
listener_config,
create_resource_tree(resources, root_resource),
self.version_string,
max_request_body_size(self.config),
self.tls_server_context_factory,
reactor=self.get_reactor(),
)
return ports
return result
def _configure_named_resource(
self, name: str, compress: bool = False
@@ -461,7 +459,7 @@ def start_reactor(
config: HomeServerConfig,
) -> None:
"""
Start the reactor (Twisted event-loop).
Start the asyncio event loop.
Args:
config: The configuration for the homeserver.
synapse/http/aiohttp_shim.py
+1010
View File
File diff suppressed because it is too large Load Diff
synapse/http/server.py
+98 -300
View File
@@ -22,7 +22,6 @@
import abc
import html
import logging
import types
import urllib
import urllib.parse
from http import HTTPStatus
@@ -34,40 +33,34 @@ from typing import (
Awaitable,
Callable,
Iterable,
Iterator,
Pattern,
Protocol,
cast,
)
import attr
import jinja2
from canonicaljson import encode_canonical_json
from zope.interface import implementer
from asyncio import CancelledError
try:
from twisted.internet import defer, interfaces, reactor
from twisted.internet.defer import CancelledError as TwistedCancelledError
from twisted.python import failure
from twisted.web import resource
# Catch both CancelledError types during transition
_CancelledErrors = (CancelledError, TwistedCancelledError)
except ImportError:
_CancelledErrors = (CancelledError,) # type: ignore[assignment]
from synapse.types import ISynapseThreadlessReactor
try:
from twisted.internet import reactor
from twisted.web import resource
from twisted.web.pages import notFound
except ImportError:
from twisted.web.resource import NoResource as notFound # type: ignore[assignment]
try:
from twisted.web.resource import NoResource as notFound # type: ignore[assignment]
except ImportError:
pass
from twisted.web.resource import IResource
from twisted.web.server import NOT_DONE_YET, Request
from twisted.web.static import File
from twisted.web.util import redirectTo
try:
from twisted.web.resource import IResource
from twisted.web.server import Request
from twisted.web.static import File
from twisted.web.util import redirectTo
except ImportError:
pass
from synapse.api.errors import (
CodeMessageException,
@@ -78,19 +71,15 @@ from synapse.api.errors import (
UnrecognizedRequestError,
)
from synapse.config.homeserver import HomeServerConfig
from synapse.logging.context import defer_to_thread, preserve_fn, run_in_background
from synapse.logging.opentracing import active_span, start_active_span, trace_servlet
from synapse.logging.opentracing import trace_servlet
from synapse.util.caches import intern_dict
from synapse.util.cancellation import is_function_cancellable
from synapse.util.clock import Clock
from synapse.util.duration import Duration
from synapse.util.iterutils import chunk_seq
from synapse.util.json import json_encoder
if TYPE_CHECKING:
import opentracing
from synapse.http.site import SynapseRequest
from synapse.http.aiohttp_shim import SynapseRequest
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
@@ -117,13 +106,17 @@ HTTP_STATUS_REQUEST_CANCELLED = 499
def return_json_error(
f: failure.Failure, request: "SynapseRequest", config: HomeServerConfig | None
exc: Exception, request: "SynapseRequest", config: HomeServerConfig | None
) -> None:
"""Sends a JSON error response to clients."""
"""Sends a JSON error response to clients.
if f.check(SynapseError):
# mypy doesn't understand that f.check asserts the type.
exc: SynapseError = f.value
Args:
exc: The exception that caused the error.
request: The request to respond to.
config: The homeserver config, or None.
"""
if isinstance(exc, SynapseError):
error_code = exc.code
error_dict = exc.error_dict(config)
if exc.headers is not None:
@@ -136,7 +129,7 @@ def return_json_error(
)
else:
logger.info("%s SynapseError: %s - %s", request, error_code, exc.msg)
elif f.check(*_CancelledErrors):
elif isinstance(exc, CancelledError):
error_code = HTTP_STATUS_REQUEST_CANCELLED
error_dict = {"error": "Request cancelled", "errcode": Codes.UNKNOWN}
@@ -145,7 +138,7 @@ def return_json_error(
"Got cancellation before client disconnection from %r: %r",
request.request_metrics.name,
request,
exc_info=(f.type, f.value, f.getTracebackObject()),
exc_info=True,
)
else:
error_code = 500
@@ -155,18 +148,17 @@ def return_json_error(
"Failed handle request via %r: %r",
request.request_metrics.name,
request,
exc_info=(f.type, f.value, f.getTracebackObject()),
exc_info=True,
)
# Only respond with an error response if we haven't already started writing,
# otherwise lets just kill the connection
if request.startedWriting:
if request.channel:
try:
request.channel.forceAbortClient()
except Exception:
# abortConnection throws if the connection is already closed
pass
# In aiohttp world, there's no channel to force-abort — the response
# is buffered and we can't retract it. Just log.
logger.warning(
"Error occurred after response writing started for %r", request
)
else:
respond_with_json(
request,
@@ -177,42 +169,40 @@ def return_json_error(
def return_html_error(
f: failure.Failure,
request: Request,
exc: Exception,
request: "SynapseRequest",
error_template: str | jinja2.Template,
) -> None:
"""Sends an HTML error page corresponding to the given failure.
"""Sends an HTML error page corresponding to the given exception.
Handles RedirectException and other CodeMessageExceptions (such as SynapseError)
Args:
f: the error to report
exc: the error to report
request: the failing request
error_template: the HTML template. Can be either a string (with `{code}`,
`{msg}` placeholders), or a jinja2 template
"""
if f.check(CodeMessageException):
# mypy doesn't understand that f.check asserts the type.
cme: CodeMessageException = f.value
code = cme.code
msg = cme.msg
if cme.headers is not None:
for header, value in cme.headers.items():
if isinstance(exc, CodeMessageException):
code = exc.code
msg = exc.msg
if exc.headers is not None:
for header, value in exc.headers.items():
request.setHeader(header, value)
if isinstance(cme, RedirectException):
logger.info("%s redirect to %s", request, cme.location)
request.setHeader(b"location", cme.location)
request.cookies.extend(cme.cookies)
elif isinstance(cme, SynapseError):
if isinstance(exc, RedirectException):
logger.info("%s redirect to %s", request, exc.location)
request.setHeader(b"location", exc.location)
request.cookies.extend(exc.cookies)
elif isinstance(exc, SynapseError):
logger.info("%s SynapseError: %s - %s", request, code, msg)
else:
logger.error(
"Failed handle request %r",
request,
exc_info=(f.type, f.value, f.getTracebackObject()),
exc_info=True,
)
elif f.check(*_CancelledErrors):
elif isinstance(exc, CancelledError):
code = HTTP_STATUS_REQUEST_CANCELLED
msg = "Request cancelled"
@@ -220,7 +210,7 @@ def return_html_error(
logger.error(
"Got cancellation before client disconnection when handling request %r",
request,
exc_info=(f.type, f.value, f.getTracebackObject()),
exc_info=True,
)
else:
code = HTTPStatus.INTERNAL_SERVER_ERROR
@@ -229,7 +219,7 @@ def return_html_error(
logger.error(
"Failed handle request %r",
request,
exc_info=(f.type, f.value, f.getTracebackObject()),
exc_info=True,
)
if isinstance(error_template, str):
@@ -242,7 +232,7 @@ def return_html_error(
def wrap_async_request_handler(
h: Callable[["_AsyncResource", "SynapseRequest"], Awaitable[None]],
) -> Callable[["_AsyncResource", "SynapseRequest"], "defer.Deferred[None]"]:
) -> Callable[["_AsyncResource", "SynapseRequest"], Awaitable[None]]:
"""Wraps an async request handler so that it calls request.processing.
This helps ensure that work done by the request handler after the request is completed
@@ -251,8 +241,8 @@ def wrap_async_request_handler(
The handler method must have a signature of "handle_foo(self, request)",
where "request" must be a SynapseRequest.
The handler may return a deferred, in which case the completion of the request isn't
logged until the deferred completes.
The handler may return a coroutine, in which case the completion of the request isn't
logged until the coroutine completes.
"""
async def wrapped_async_request_handler(
@@ -261,9 +251,9 @@ def wrap_async_request_handler(
with request.processing():
await h(self, request)
# we need to preserve_fn here, because the synchronous render method won't yield for
# us (obviously)
return preserve_fn(wrapped_async_request_handler)
# Return the async function directly — no preserve_fn wrapping needed
# since the aiohttp handler factory awaits this directly.
return wrapped_async_request_handler
# Type of a callback method for processing requests
@@ -305,7 +295,7 @@ class HttpServer(Protocol):
"""
class _AsyncResource(resource.Resource, metaclass=abc.ABCMeta):
class _AsyncResource(metaclass=abc.ABCMeta):
"""Base class for resources that have async handlers.
Sub classes can either implement `_async_render_<METHOD>` to handle
@@ -317,19 +307,9 @@ class _AsyncResource(resource.Resource, metaclass=abc.ABCMeta):
"""
def __init__(self, clock: Clock, extract_context: bool = False):
super().__init__()
self._clock = clock
self._extract_context = extract_context
def render(self, request: "SynapseRequest") -> int:
"""This gets called by twisted every time someone sends us a request."""
import asyncio
request.render_deferred = asyncio.ensure_future(
self._async_render_wrapper(request)
)
return NOT_DONE_YET
@wrap_async_request_handler
async def _async_render_wrapper(self, request: "SynapseRequest") -> None:
"""This is a wrapper that delegates to `_async_render` and handles
@@ -349,12 +329,8 @@ class _AsyncResource(resource.Resource, metaclass=abc.ABCMeta):
if callback_return is not None:
code, response = callback_return
self._send_response(request, code, response)
except Exception:
# failure.Failure() fishes the original Failure out
# of our stack, and thus gives us a sensible stack
# trace.
f = failure.Failure()
self._send_error_response(f, request)
except Exception as e:
self._send_error_response(e, request)
async def _async_render(self, request: "SynapseRequest") -> tuple[int, Any] | None:
"""Delegates to `_async_render_<METHOD>` methods, or returns a 400 if
@@ -395,7 +371,7 @@ class _AsyncResource(resource.Resource, metaclass=abc.ABCMeta):
@abc.abstractmethod
def _send_error_response(
self,
f: failure.Failure,
exc: Exception,
request: "SynapseRequest",
) -> None:
raise NotImplementedError()
@@ -430,7 +406,7 @@ class DirectServeJsonResource(_AsyncResource):
# As of the time of writing this, all Synapse internal usages of
# `DirectServeJsonResource` pass in the existing homeserver clock instance.
clock = Clock( # type: ignore[multiple-internal-clocks]
cast(ISynapseThreadlessReactor, reactor),
ISynapseThreadlessReactor(reactor),
server_name="synapse_module_running_from_unknown_server",
)
@@ -455,17 +431,19 @@ class DirectServeJsonResource(_AsyncResource):
def _send_error_response(
self,
f: failure.Failure,
exc: Exception,
request: "SynapseRequest",
) -> None:
"""Implements _AsyncResource._send_error_response"""
return_json_error(f, request, None)
return_json_error(exc, request, None)
@attr.s(slots=True, frozen=True, auto_attribs=True)
class _PathEntry:
callback: ServletCallback
servlet_classname: str
__slots__ = ("callback", "servlet_classname")
def __init__(self, callback: ServletCallback, servlet_classname: str):
self.callback = callback
self.servlet_classname = servlet_classname
class JsonResource(DirectServeJsonResource):
@@ -580,7 +558,7 @@ class JsonResource(DirectServeJsonResource):
raw_callback_return = callback(request, **kwargs)
# Is it synchronous? We'll allow this for now.
if isinstance(raw_callback_return, (defer.Deferred, types.CoroutineType)):
if isawaitable(raw_callback_return):
callback_return = await raw_callback_return
else:
callback_return = raw_callback_return
@@ -589,11 +567,11 @@ class JsonResource(DirectServeJsonResource):
def _send_error_response(
self,
f: failure.Failure,
exc: Exception,
request: "SynapseRequest",
) -> None:
"""Implements _AsyncResource._send_error_response"""
return_json_error(f, request, self.hs.config)
return_json_error(exc, request, self.hs.config)
class DirectServeHtmlResource(_AsyncResource):
@@ -625,7 +603,7 @@ class DirectServeHtmlResource(_AsyncResource):
# As of the time of writing this, all Synapse internal usages of
# `DirectServeHtmlResource` pass in the existing homeserver clock instance.
clock = Clock( # type: ignore[multiple-internal-clocks]
cast(ISynapseThreadlessReactor, reactor),
ISynapseThreadlessReactor(reactor),
server_name="synapse_module_running_from_unknown_server",
)
@@ -646,11 +624,11 @@ class DirectServeHtmlResource(_AsyncResource):
def _send_error_response(
self,
f: failure.Failure,
exc: Exception,
request: "SynapseRequest",
) -> None:
"""Implements _AsyncResource._send_error_response"""
return_html_error(f, request, self.ERROR_TEMPLATE)
return_html_error(exc, request, self.ERROR_TEMPLATE)
class StaticResource(File):
@@ -674,12 +652,11 @@ class UnrecognizedRequestResource(resource.Resource):
errcode of M_UNRECOGNIZED.
"""
def render(self, request: "SynapseRequest") -> int:
f = failure.Failure(UnrecognizedRequestError(code=404))
return_json_error(f, request, None)
# A response has already been sent but Twisted requires either NOT_DONE_YET
# or the response bytes as a return value.
return NOT_DONE_YET
def render(self, request: "SynapseRequest") -> bytes:
exc = UnrecognizedRequestError(code=404)
return_json_error(exc, request, None)
# Return empty bytes — the response has already been written to the request.
return b""
def getChild(self, name: str, request: Request) -> resource.Resource:
return self
@@ -722,110 +699,9 @@ class RootOptionsRedirectResource(OptionsResource, RootRedirect):
pass
@implementer(interfaces.IPushProducer)
class _ByteProducer:
"""
Iteratively write bytes to the request.
"""
# The minimum number of bytes for each chunk. Note that the last chunk will
# usually be smaller than this.
min_chunk_size = 1024
def __init__(
self,
request: Request,
iterator: Iterator[bytes],
):
self._request: Request | None = request
self._iterator = iterator
self._paused = False
self.tracing_scope = start_active_span(
"write_bytes_to_request",
)
self.tracing_scope.__enter__()
try:
self._request.registerProducer(self, True)
except AttributeError as e:
# Calling self._request.registerProducer might raise an AttributeError since
# the underlying Twisted code calls self._request.channel.registerProducer,
# however self._request.channel will be None if the connection was lost.
logger.info("Connection disconnected before response was written: %r", e)
# We drop our references to data we'll not use.
self._iterator = iter(())
self.tracing_scope.__exit__(type(e), None, e.__traceback__)
else:
# Start producing if `registerProducer` was successful
self.resumeProducing()
def _send_data(self, data: list[bytes]) -> None:
"""
Send a list of bytes as a chunk of a response.
"""
if not data or not self._request:
return
self._request.write(b"".join(data))
def pauseProducing(self) -> None:
opentracing_span = active_span()
if opentracing_span is not None:
opentracing_span.log_kv({"event": "producer_paused"})
self._paused = True
def resumeProducing(self) -> None:
# We've stopped producing in the meantime (note that this might be
# re-entrant after calling write).
if not self._request:
return
self._paused = False
opentracing_span = active_span()
if opentracing_span is not None:
opentracing_span.log_kv({"event": "producer_resumed"})
# Write until there's backpressure telling us to stop.
while not self._paused:
# Get the next chunk and write it to the request.
#
# The output of the JSON encoder is buffered and coalesced until
# min_chunk_size is reached. This is because JSON encoders produce
# very small output per iteration and the Request object converts
# each call to write() to a separate chunk. Without this there would
# be an explosion in bytes written (e.g. b"{" becoming "1\r\n{\r\n").
#
# Note that buffer stores a list of bytes (instead of appending to
# bytes) to hopefully avoid many allocations.
buffer = []
buffered_bytes = 0
while buffered_bytes < self.min_chunk_size:
try:
data = next(self._iterator)
buffer.append(data)
buffered_bytes += len(data)
except StopIteration:
# The entire JSON object has been serialized, write any
# remaining data, finalize the producer and the request, and
# clean-up any references.
self._send_data(buffer)
self._request.unregisterProducer()
self._request.finish()
self.stopProducing()
return
self._send_data(buffer)
def stopProducing(self) -> None:
# Clear a circular reference.
self._request = None
self.tracing_scope.__exit__(None, None, None)
def _encode_json_bytes(json_object: object) -> bytes:
"""
Encode an object into JSON. Returns an iterator of bytes.
Encode an object into JSON. Returns bytes.
"""
return json_encoder.encode(json_object).encode("utf-8")
@@ -836,7 +712,7 @@ def respond_with_json(
json_object: Any,
send_cors: bool = False,
canonical_json: bool = True,
) -> int | None:
) -> None:
"""Sends encoded JSON in response to the given request.
Args:
@@ -847,21 +723,15 @@ def respond_with_json(
https://fetch.spec.whatwg.org/#http-cors-protocol
canonical_json: Whether to use the canonicaljson algorithm when encoding
the JSON bytes.
Returns:
twisted.web.server.NOT_DONE_YET if the request is still active.
"""
# The response code must always be set, for logging purposes.
request.setResponseCode(code)
# could alternatively use request.notifyFinish() and flip a flag when
# the Deferred fires, but since the flag is RIGHT THERE it seems like
# a waste.
if request._disconnected:
logger.warning(
"Not sending response to request %s, already disconnected.", request
)
return None
return
if canonical_json:
encoder: Callable[[object], bytes] = encode_canonical_json
@@ -885,10 +755,11 @@ def respond_with_json(
if send_cors:
set_cors_headers(request)
run_in_background(
_async_write_json_to_request_in_thread, request, encoder, json_object
)
return NOT_DONE_YET
# Encode and write the JSON directly — response is buffered in the shim.
json_bytes = encoder(json_object)
request.setHeader(b"Content-Length", b"%d" % (len(json_bytes),))
request.write(json_bytes)
finish_request(request)
def respond_with_json_bytes(
@@ -896,7 +767,7 @@ def respond_with_json_bytes(
code: int,
json_bytes: bytes,
send_cors: bool = False,
) -> int | None:
) -> None:
"""Sends encoded JSON in response to the given request.
Args:
@@ -905,9 +776,6 @@ def respond_with_json_bytes(
json_bytes: The json bytes to use as the response body.
send_cors: Whether to send Cross-Origin Resource Sharing headers
https://fetch.spec.whatwg.org/#http-cors-protocol
Returns:
twisted.web.server.NOT_DONE_YET if the request is still active.
"""
# The response code must always be set, for logging purposes.
request.setResponseCode(code)
@@ -916,7 +784,7 @@ def respond_with_json_bytes(
logger.warning(
"Not sending response to request %s, already disconnected.", request
)
return None
return
request.setHeader(b"Content-Type", b"application/json")
request.setHeader(b"Content-Length", b"%d" % (len(json_bytes),))
@@ -936,68 +804,8 @@ def respond_with_json_bytes(
if send_cors:
set_cors_headers(request)
_write_bytes_to_request(request, json_bytes)
return NOT_DONE_YET
async def _async_write_json_to_request_in_thread(
request: "SynapseRequest",
json_encoder: Callable[[Any], bytes],
json_object: Any,
) -> None:
"""Encodes the given JSON object on a thread and then writes it to the
request.
This is done so that encoding large JSON objects doesn't block the reactor
thread.
Note: We don't use JsonEncoder.iterencode here as that falls back to the
Python implementation (rather than the C backend), which is *much* more
expensive.
"""
def encode(opentracing_span: "opentracing.Span | None") -> bytes:
# it might take a while for the threadpool to schedule us, so we write
# opentracing logs once we actually get scheduled, so that we can see how
# much that contributed.
if opentracing_span:
opentracing_span.log_kv({"event": "scheduled"})
res = json_encoder(json_object)
if opentracing_span:
opentracing_span.log_kv({"event": "encoded"})
return res
with start_active_span("encode_json_response"):
span = active_span()
json_str = await defer_to_thread(request.reactor, encode, span)
_write_bytes_to_request(request, json_str)
def _write_bytes_to_request(request: Request, bytes_to_write: bytes) -> None:
"""Writes the bytes to the request using an appropriate producer.
Note: This should be used instead of `Request.write` to correctly handle
large response bodies.
"""
# The problem with dumping all of the response into the `Request` object at
# once (via `Request.write`) is that doing so starts the timeout for the
# next request to be received: so if it takes longer than 60s to stream back
# the response to the client, the client never gets it.
# c.f https://github.com/twisted/twisted/issues/12498
#
# One workaround is to use a `Producer`; then the timeout is only
# started once all of the content is sent over the TCP connection.
# To make sure we don't write all of the bytes at once we split it up into
# chunks.
chunk_size = 4096
bytes_generator = chunk_seq(bytes_to_write, chunk_size)
# We use a `_ByteProducer` here rather than `NoRangeStaticProducer` as the
# unit tests can't cope with being given a pull producer.
_ByteProducer(request, bytes_generator)
request.write(json_bytes)
finish_request(request)
def set_cors_headers(request: "SynapseRequest") -> None:
@@ -1034,7 +842,7 @@ def set_cors_headers(request: "SynapseRequest") -> None:
)
def set_corp_headers(request: Request) -> None:
def set_corp_headers(request: "SynapseRequest") -> None:
"""Set the CORP headers so that javascript running in a web browsers can
embed the resource returned from this request when their client requires
the `Cross-Origin-Embedder-Policy: require-corp` header.
@@ -1045,14 +853,14 @@ def set_corp_headers(request: Request) -> None:
request.setHeader(b"Cross-Origin-Resource-Policy", b"cross-origin")
def respond_with_html(request: Request, code: int, html: str) -> None:
def respond_with_html(request: "SynapseRequest", code: int, html: str) -> None:
"""
Wraps `respond_with_html_bytes` by first encoding HTML from a str to UTF-8 bytes.
"""
respond_with_html_bytes(request, code, html.encode("utf-8"))
def respond_with_html_bytes(request: Request, code: int, html_bytes: bytes) -> None:
def respond_with_html_bytes(request: "SynapseRequest", code: int, html_bytes: bytes) -> None:
"""
Sends HTML (encoded as UTF-8 bytes) as the response to the given request.
@@ -1066,9 +874,6 @@ def respond_with_html_bytes(request: Request, code: int, html_bytes: bytes) -> N
# The response code must always be set, for logging purposes.
request.setResponseCode(code)
# could alternatively use request.notifyFinish() and flip a flag when
# the Deferred fires, but since the flag is RIGHT THERE it seems like
# a waste.
if request._disconnected:
logger.warning(
"Not sending response to request %s, already disconnected.", request
@@ -1085,7 +890,7 @@ def respond_with_html_bytes(request: Request, code: int, html_bytes: bytes) -> N
finish_request(request)
def set_clickjacking_protection_headers(request: Request) -> None:
def set_clickjacking_protection_headers(request: "SynapseRequest") -> None:
"""
Set headers to guard against clickjacking of embedded content.
@@ -1122,18 +927,11 @@ def respond_with_redirect(
finish_request(request)
def finish_request(request: Request) -> None:
def finish_request(request: "SynapseRequest") -> None:
"""Finish writing the response to the request.
Twisted throws a RuntimeException if the connection closed before the
response was written but doesn't provide a convenient or reliable way to
determine if the connection was closed. So we catch and log the RuntimeException
You might think that ``request.notifyFinish`` could be used to tell if the
request was finished. However the deferred it returns won't fire if the
connection was already closed, meaning we'd have to have called the method
right at the start of the request. By the time we want to write the response
it will already be too late.
Catches RuntimeError in case the request has already been finished or the
connection was closed.
"""
try:
request.finish()
synapse/http/servlet.py
+1 -5
View File
@@ -36,11 +36,6 @@ from typing import (
from pydantic import BaseModel, ValidationError
try:
from twisted.web.server import Request
except ImportError:
pass
from synapse.api.errors import Codes, SynapseError
from synapse.http import redact_uri
from synapse.http.server import HttpServer
@@ -48,6 +43,7 @@ from synapse.types import JsonDict, RoomAlias, RoomID, StrCollection
from synapse.util.json import json_decoder
if TYPE_CHECKING:
from synapse.http.aiohttp_shim import SynapseRequest as Request
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
synapse/http/site.py
+16 -935
View File
@@ -18,943 +18,24 @@
# [This file includes modifications made by New Vector Limited]
#
#
import contextlib
import json
import logging
import time
from http import HTTPStatus
from typing import TYPE_CHECKING, Any, Generator
import attr
try:
from zope.interface import implementer
except ImportError:
pass
"""
Backward-compatibility shim.
try:
from twisted.internet.address import UNIXAddress
from twisted.internet.defer import Deferred
from twisted.internet.interfaces import IAddress
from twisted.internet.protocol import Protocol
from twisted.python.failure import Failure
from twisted.web.http import HTTPChannel
from twisted.web.resource import IResource, Resource
from twisted.web.server import Request
except ImportError:
pass
The canonical implementations of ``SynapseRequest``, ``SynapseSite``, and
``RequestInfo`` now live in ``synapse.http.aiohttp_shim``. This module
re-exports them so that the many existing ``from synapse.http.site import …``
statements throughout the codebase continue to work.
"""
from synapse.api.errors import Codes, SynapseError
from synapse.config.server import ListenerConfig
from synapse.http import get_request_user_agent, redact_uri
from synapse.http.proxy import ProxySite
from synapse.http.request_metrics import RequestMetrics, requests_counter
from synapse.logging.context import (
ContextRequest,
LoggingContext,
PreserveLoggingContext,
from synapse.http.aiohttp_shim import ( # noqa: F401
RequestInfo,
SynapseRequest,
SynapseSite,
)
from synapse.metrics import SERVER_NAME_LABEL
from synapse.types import ISynapseReactor, Requester
if TYPE_CHECKING:
import opentracing
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
_next_request_seq = 0
class ContentLengthError(SynapseError):
"""Raised when content-length validation fails."""
class SynapseRequest(Request):
"""Class which encapsulates an HTTP request to synapse.
All of the requests processed in synapse are of this type.
It extends twisted's twisted.web.server.Request, and adds:
* Unique request ID
* A log context associated with the request
* Redaction of access_token query-params in __repr__
* Logging at start and end
* Metrics to record CPU, wallclock and DB time by endpoint.
* A limit to the size of request which will be accepted
It also provides a method `processing`, which returns a context manager. If this
method is called, the request won't be logged until the context manager is closed;
this is useful for asynchronous request handlers which may go on processing the
request even after the client has disconnected.
Attributes:
logcontext: the log context for this request
"""
def __init__(
self,
channel: HTTPChannel,
site: "SynapseSite",
our_server_name: str,
*args: Any,
max_request_body_size: int = 1024,
request_id_header: str | None = None,
**kw: Any,
):
super().__init__(channel, *args, **kw)
self.our_server_name = our_server_name
self._max_request_body_size = max_request_body_size
self.request_id_header = request_id_header
self.synapse_site = site
self.reactor = site.reactor
self._channel = channel # this is used by the tests
self.start_time = 0.0
# The requester, if authenticated. For federation requests this is the
# server name, for client requests this is the Requester object.
self._requester: Requester | str | None = None
# An opentracing span for this request. Will be closed when the request is
# completely processed.
self._opentracing_span: "opentracing.Span | None" = None
# we can't yet create the logcontext, as we don't know the method.
self.logcontext: LoggingContext | None = None
# The `Deferred` to cancel if the client disconnects early and
# `is_render_cancellable` is set. Expected to be set by `Resource.render`.
self.render_deferred: "Deferred[None]" | None = None
# A boolean indicating whether `render_deferred` should be cancelled if the
# client disconnects early. Expected to be set by the coroutine started by
# `Resource.render`, if rendering is asynchronous.
self.is_render_cancellable: bool = False
global _next_request_seq
self.request_seq = _next_request_seq
_next_request_seq += 1
# whether an asynchronous request handler has called processing()
self._is_processing = False
# the time when the asynchronous request handler completed its processing
self._processing_finished_time: float | None = None
# what time we finished sending the response to the client (or the connection
# dropped)
self.finish_time: float | None = None
def __repr__(self) -> str:
# We overwrite this so that we don't log ``access_token``
return "<%s at 0x%x method=%r uri=%r clientproto=%r site=%r>" % (
self.__class__.__name__,
id(self),
self.get_method(),
self.get_redacted_uri(),
self.clientproto.decode("ascii", errors="replace"),
self.synapse_site.site_tag,
)
def _respond_with_error(self, synapse_error: SynapseError) -> None:
"""Send an error response and close the connection."""
self.setResponseCode(synapse_error.code)
error_response_bytes = json.dumps(synapse_error.error_dict(None)).encode()
self.responseHeaders.setRawHeaders(b"Content-Type", [b"application/json"])
self.responseHeaders.setRawHeaders(
b"Content-Length", [f"{len(error_response_bytes)}"]
)
self.write(error_response_bytes)
self.loseConnection()
def _get_content_length_from_headers(self) -> int | None:
"""Attempts to obtain the `Content-Length` value from the request's headers.
Returns:
Content length as `int` if present. Otherwise `None`.
Raises:
ContentLengthError: if multiple `Content-Length` headers are present or the
value is not an `int`.
"""
content_length_headers = self.requestHeaders.getRawHeaders(b"Content-Length")
if content_length_headers is None:
return None
# If there are multiple `Content-Length` headers return an error.
# We don't want to even try to pick the right one if there are multiple
# as we could run into problems similar to request smuggling vulnerabilities
# which rely on the mismatch of how different systems interpret information.
if len(content_length_headers) != 1:
raise ContentLengthError(
HTTPStatus.BAD_REQUEST,
"Multiple Content-Length headers received",
Codes.UNKNOWN,
)
try:
return int(content_length_headers[0])
except (ValueError, TypeError):
raise ContentLengthError(
HTTPStatus.BAD_REQUEST,
"Content-Length header value is not a valid integer",
Codes.UNKNOWN,
)
def _validate_content_length(self) -> None:
"""Validate Content-Length header and actual content size.
Raises:
ContentLengthError: If validation fails.
"""
# we should have a `content` by now.
assert self.content, "_validate_content_length() called before gotLength()"
content_length = self._get_content_length_from_headers()
if content_length is None:
return
actual_content_length = self.content.tell()
if content_length > self._max_request_body_size:
logger.info(
"Rejecting request from %s because Content-Length %d exceeds maximum size %d: %s %s",
self.client,
content_length,
self._max_request_body_size,
self.get_method(),
self.get_redacted_uri(),
)
raise ContentLengthError(
HTTPStatus.REQUEST_ENTITY_TOO_LARGE,
f"Request content is too large (>{self._max_request_body_size})",
Codes.TOO_LARGE,
)
if content_length != actual_content_length:
comparison = (
"smaller" if content_length < actual_content_length else "larger"
)
logger.info(
"Rejecting request from %s because Content-Length %d is %s than the request content size %d: %s %s",
self.client,
content_length,
comparison,
actual_content_length,
self.get_method(),
self.get_redacted_uri(),
)
raise ContentLengthError(
HTTPStatus.BAD_REQUEST,
f"Rejecting request as the Content-Length header value {content_length} "
f"is {comparison} than the actual request content size {actual_content_length}",
Codes.UNKNOWN,
)
# Twisted machinery: this method is called by the Channel once the full request has
# been received, to dispatch the request to a resource.
def requestReceived(self, command: bytes, path: bytes, version: bytes) -> None:
# In the case of a Content-Length header being present, and it's value being too
# large, throw a proper error to make debugging issues due to overly large requests much
# easier. Currently we handle such cases in `handleContentChunk` and abort the
# connection without providing a proper HTTP response.
#
# Attempting to write an HTTP response from within `handleContentChunk` does not
# work, so the code here has been added to at least provide a response in the
# case of the Content-Length header being present.
self.method, self.uri = command, path
self.clientproto = version
try:
self._validate_content_length()
except ContentLengthError as e:
self._respond_with_error(e)
return
# We're patching Twisted to bail/abort early when we see someone trying to upload
# `multipart/form-data` so we can avoid Twisted parsing the entire request body into
# in-memory (specific problem of this specific `Content-Type`). This protects us
# from an attacker uploading something bigger than the available RAM and crashing
# the server with a `MemoryError`, or carefully block just enough resources to cause
# all other requests to fail.
#
# FIXME: This can be removed once Twisted releases a fix and we update to a
# version that is patched
# See: https://github.com/element-hq/synapse/security/advisories/GHSA-rfq8-j7rh-8hf2
if command == b"POST":
ctype = self.requestHeaders.getRawHeaders(b"content-type")
if ctype and b"multipart/form-data" in ctype[0]:
logger.warning(
"Aborting connection from %s because `content-type: multipart/form-data` is unsupported: %s %s",
self.client,
self.get_method(),
self.get_redacted_uri(),
)
self.code = HTTPStatus.UNSUPPORTED_MEDIA_TYPE.value
self.code_message = bytes(
HTTPStatus.UNSUPPORTED_MEDIA_TYPE.phrase, "ascii"
)
# FIXME: Return a better error response here similar to the
# `error_response_json` returned in other code paths here.
self.responseHeaders.setRawHeaders(b"Content-Length", [b"0"])
self.write(b"")
self.loseConnection()
return
return super().requestReceived(command, path, version)
def handleContentChunk(self, data: bytes) -> None:
# we should have a `content` by now.
assert self.content, "handleContentChunk() called before gotLength()"
if self.content.tell() + len(data) > self._max_request_body_size:
logger.warning(
"Aborting connection from %s because the request exceeds maximum size: %s %s",
self.client,
self.get_method(),
self.get_redacted_uri(),
)
if self.channel:
self.channel.forceAbortClient()
return
super().handleContentChunk(data)
@property
def requester(self) -> Requester | str | None:
return self._requester
@requester.setter
def requester(self, value: Requester | str) -> None:
# Store the requester, and update some properties based on it.
# This should only be called once.
assert self._requester is None
self._requester = value
# A logging context should exist by now (and have a ContextRequest).
assert self.logcontext is not None
assert self.logcontext.request is not None
(
requester,
authenticated_entity,
) = self.get_authenticated_entity()
self.logcontext.request.requester = requester
# If there's no authenticated entity, it was the requester.
self.logcontext.request.authenticated_entity = authenticated_entity or requester
def set_opentracing_span(self, span: "opentracing.Span") -> None:
"""attach an opentracing span to this request
Doing so will cause the span to be closed when we finish processing the request
"""
self._opentracing_span = span
def get_request_id(self) -> str:
request_id_value = None
if self.request_id_header:
request_id_value = self.getHeader(self.request_id_header)
if request_id_value is None:
request_id_value = str(self.request_seq)
return "%s-%s" % (self.get_method(), request_id_value)
def get_redacted_uri(self) -> str:
"""Gets the redacted URI associated with the request (or placeholder if the URI
has not yet been received).
Note: This is necessary as the placeholder value in twisted is str
rather than bytes, so we need to sanitise `self.uri`.
Returns:
The redacted URI as a string.
"""
uri: bytes | str = self.uri
if isinstance(uri, bytes):
uri = uri.decode("ascii", errors="replace")
return redact_uri(uri)
def get_method(self) -> str:
"""Gets the method associated with the request (or placeholder if method
has not yet been received).
Note: This is necessary as the placeholder value in twisted is str
rather than bytes, so we need to sanitise `self.method`.
Returns:
The request method as a string.
"""
method: bytes | str = self.method
if isinstance(method, bytes):
return self.method.decode("ascii")
return method
def get_authenticated_entity(self) -> tuple[str | None, str | None]:
"""
Get the "authenticated" entity of the request, which might be the user
performing the action, or a user being puppeted by a server admin.
Returns:
A tuple:
The first item is a string representing the user making the request.
The second item is a string or None representing the user who
authenticated when making this request. See
Requester.authenticated_entity.
"""
# Convert the requester into a string that we can log
if isinstance(self._requester, str):
return self._requester, None
elif isinstance(self._requester, Requester):
requester = self._requester.user.to_string()
authenticated_entity = self._requester.authenticated_entity
# If this is a request where the target user doesn't match the user who
# authenticated (e.g. and admin is puppetting a user) then we return both.
if requester != authenticated_entity:
return requester, authenticated_entity
return requester, None
elif self._requester is not None:
# This shouldn't happen, but we log it so we don't lose information
# and can see that we're doing something wrong.
return repr(self._requester), None # type: ignore[unreachable]
return None, None
def render(self, resrc: Resource) -> None:
# this is called once a Resource has been found to serve the request; in our
# case the Resource in question will normally be a JsonResource.
# Create a LogContext for this request
#
# We only care about associating logs and tallying up metrics at the per-request
# level so we don't worry about setting the `parent_context`; preventing us from
# unnecessarily piling up metrics on the main process's context.
request_id = self.get_request_id()
self.logcontext = LoggingContext(
name=request_id,
server_name=self.our_server_name,
request=ContextRequest(
request_id=request_id,
ip_address=self.get_client_ip_if_available(),
site_tag=self.synapse_site.site_tag,
# The requester is going to be unknown at this point.
requester=None,
authenticated_entity=None,
method=self.get_method(),
url=self.get_redacted_uri(),
protocol=self.clientproto.decode("ascii", errors="replace"),
user_agent=get_request_user_agent(self),
),
)
# override the Server header which is set by twisted
self.setHeader("Server", self.synapse_site.server_version_string)
with PreserveLoggingContext(self.logcontext):
# we start the request metrics timer here with an initial stab
# at the servlet name. For most requests that name will be
# JsonResource (or a subclass), and JsonResource._async_render
# will update it once it picks a servlet.
servlet_name = resrc.__class__.__name__
self._started_processing(servlet_name)
Request.render(self, resrc)
# record the arrival of the request *after*
# dispatching to the handler, so that the handler
# can update the servlet name in the request
# metrics
requests_counter.labels(
method=self.get_method(),
servlet=self.request_metrics.name,
**{SERVER_NAME_LABEL: self.our_server_name},
).inc()
@contextlib.contextmanager
def processing(self) -> Generator[None, None, None]:
"""Record the fact that we are processing this request.
Returns a context manager; the correct way to use this is:
async def handle_request(request):
with request.processing("FooServlet"):
await really_handle_the_request()
Once the context manager is closed, the completion of the request will be logged,
and the various metrics will be updated.
"""
if self._is_processing:
raise RuntimeError("Request is already processing")
self._is_processing = True
try:
yield
except Exception:
# this should already have been caught, and sent back to the client as a 500.
logger.exception(
"Asynchronous message handler raised an uncaught exception"
)
finally:
# the request handler has finished its work and either sent the whole response
# back, or handed over responsibility to a Producer.
self._processing_finished_time = time.time()
self._is_processing = False
if self._opentracing_span:
self._opentracing_span.log_kv({"event": "finished processing"})
# if we've already sent the response, log it now; otherwise, we wait for the
# response to be sent.
if self.finish_time is not None:
self._finished_processing()
def finish(self) -> None:
"""Called when all response data has been written to this Request.
Overrides twisted.web.server.Request.finish to record the finish time and do
logging.
"""
self.finish_time = time.time()
Request.finish(self)
if self._opentracing_span:
self._opentracing_span.log_kv({"event": "response sent"})
if not self._is_processing:
assert self.logcontext is not None
with PreserveLoggingContext(self.logcontext):
self._finished_processing()
def connectionLost(self, reason: Failure | Exception) -> None:
"""Called when the client connection is closed before the response is written.
Overrides twisted.web.server.Request.connectionLost to record the finish time and
do logging.
"""
# There is a bug in Twisted where reason is not wrapped in a Failure object
# Detect this and wrap it manually as a workaround
# More information: https://github.com/matrix-org/synapse/issues/7441
if not isinstance(reason, Failure):
reason = Failure(reason)
self.finish_time = time.time()
Request.connectionLost(self, reason)
if self.logcontext is None:
logger.info(
"Connection from %s lost before request headers were read", self.client
)
return
# we only get here if the connection to the client drops before we send
# the response.
#
# It's useful to log it here so that we can get an idea of when
# the client disconnects.
with PreserveLoggingContext(self.logcontext):
logger.info("Connection from client lost before response was sent")
if self._opentracing_span:
self._opentracing_span.log_kv(
{"event": "client connection lost", "reason": str(reason.value)}
)
if self._is_processing:
if self.is_render_cancellable:
if self.render_deferred is not None:
# Throw a cancellation into the request processing, in the hope
# that it will finish up sooner than it normally would.
# The `self.processing()` context manager will call
# `_finished_processing()` when done.
with PreserveLoggingContext():
self.render_deferred.cancel()
else:
logger.error(
"Connection from client lost, but have no Deferred to "
"cancel even though the request is marked as cancellable."
)
else:
self._finished_processing()
def _started_processing(self, servlet_name: str) -> None:
"""Record the fact that we are processing this request.
This will log the request's arrival. Once the request completes,
be sure to call finished_processing.
Args:
servlet_name: the name of the servlet which will be
processing this request. This is used in the metrics.
It is possible to update this afterwards by updating
self.request_metrics.name.
"""
self.start_time = time.time()
self.request_metrics = RequestMetrics(our_server_name=self.our_server_name)
self.request_metrics.start(
self.start_time, name=servlet_name, method=self.get_method()
)
self.synapse_site.access_logger.debug(
"%s - %s - Received request: %s %s",
self.get_client_ip_if_available(),
self.synapse_site.site_tag,
self.get_method(),
self.get_redacted_uri(),
)
def _finished_processing(self) -> None:
"""Log the completion of this request and update the metrics"""
assert self.logcontext is not None
assert self.finish_time is not None
usage = self.logcontext.get_resource_usage()
if self._processing_finished_time is None:
# we completed the request without anything calling processing()
self._processing_finished_time = time.time()
# the time between receiving the request and the request handler finishing
processing_time = self._processing_finished_time - self.start_time
# the time between the request handler finishing and the response being sent
# to the client (nb may be negative)
response_send_time = self.finish_time - self._processing_finished_time
user_agent = get_request_user_agent(self, "-")
# int(self.code) looks redundant, because self.code is already an int.
# But self.code might be an HTTPStatus (which inherits from int)---which has
# a different string representation. So ensure we really have an integer.
code = str(int(self.code))
if not self.finished:
# we didn't send the full response before we gave up (presumably because
# the connection dropped)
code += "!"
log_level = logging.INFO if self._should_log_request() else logging.DEBUG
# If this is a request where the target user doesn't match the user who
# authenticated (e.g. and admin is puppetting a user) then we log both.
requester, authenticated_entity = self.get_authenticated_entity()
if authenticated_entity:
requester = f"{authenticated_entity}|{requester}"
# Updates to this log line should also be reflected in our docs,
# `docs/usage/administration/request_log.md`
self.synapse_site.access_logger.log(
log_level,
"%s - %s - {%s}"
" Processed request: %.3fsec/%.3fsec ru=(%.3fsec, %.3fsec) db=(%.3fsec/%.3fsec/%d)"
' %sB %s "%s %s %s" "%s" [%d dbevts]',
self.get_client_ip_if_available(),
self.synapse_site.site_tag,
requester,
processing_time,
response_send_time,
usage.ru_utime,
usage.ru_stime,
usage.db_sched_duration_sec,
usage.db_txn_duration_sec,
int(usage.db_txn_count),
self.sentLength,
code,
self.get_method(),
self.get_redacted_uri(),
self.clientproto.decode("ascii", errors="replace"),
user_agent,
usage.evt_db_fetch_count,
)
# complete the opentracing span, if any.
if self._opentracing_span:
self._opentracing_span.finish()
try:
self.request_metrics.stop(self.finish_time, self.code, self.sentLength)
except Exception as e:
logger.warning("Failed to stop metrics: %r", e)
def _should_log_request(self) -> bool:
"""Whether we should log at INFO that we processed the request."""
if self.path == b"/health":
return False
if self.method == b"OPTIONS":
return False
return True
def get_client_ip_if_available(self) -> str:
"""Logging helper. Return something useful when a client IP is not retrievable
from a unix socket.
In practice, this returns the socket file path on a SynapseRequest if using a
unix socket and the normal IP address for TCP sockets.
"""
# getClientAddress().host returns a proper IP address for a TCP socket. But
# unix sockets have no concept of IP addresses or ports and return a
# UNIXAddress containing a 'None' value. In order to get something usable for
# logs(where this is used) get the unix socket file. getHost() returns a
# UNIXAddress containing a value of the socket file and has an instance
# variable of 'name' encoded as a byte string containing the path we want.
# Decode to utf-8 so it looks nice.
if isinstance(self.getClientAddress(), UNIXAddress):
return self.getHost().name.decode("utf-8")
else:
return self.getClientAddress().host
def request_info(self) -> "RequestInfo":
h = self.getHeader(b"User-Agent")
user_agent = h.decode("ascii", "replace") if h else None
return RequestInfo(user_agent=user_agent, ip=self.get_client_ip_if_available())
class XForwardedForRequest(SynapseRequest):
"""Request object which honours proxy headers
Extends SynapseRequest to replace getClientIP, getClientAddress, and isSecure with
information from request headers.
"""
# the client IP and ssl flag, as extracted from the headers.
_forwarded_for: "_XForwardedForAddress | None" = None
_forwarded_https: bool = False
def requestReceived(self, command: bytes, path: bytes, version: bytes) -> None:
# this method is called by the Channel once the full request has been
# received, to dispatch the request to a resource.
# We can use it to set the IP address and protocol according to the
# headers.
self._process_forwarded_headers()
return super().requestReceived(command, path, version)
def _process_forwarded_headers(self) -> None:
headers = self.requestHeaders.getRawHeaders(b"x-forwarded-for")
if not headers:
return
# for now, we just use the first x-forwarded-for header. Really, we ought
# to start from the client IP address, and check whether it is trusted; if it
# is, work backwards through the headers until we find an untrusted address.
# see https://github.com/matrix-org/synapse/issues/9471
self._forwarded_for = _XForwardedForAddress(
headers[0].split(b",")[0].strip().decode("ascii")
)
# if we got an x-forwarded-for header, also look for an x-forwarded-proto header
header = self.getHeader(b"x-forwarded-proto")
if header is not None:
self._forwarded_https = header.lower() == b"https"
else:
# this is done largely for backwards-compatibility so that people that
# haven't set an x-forwarded-proto header don't get a redirect loop.
logger.warning(
"forwarded request lacks an x-forwarded-proto header: assuming https"
)
self._forwarded_https = True
def isSecure(self) -> bool:
if self._forwarded_https:
return True
return super().isSecure()
def getClientIP(self) -> str:
"""
Return the IP address of the client who submitted this request.
This method is deprecated. Use getClientAddress() instead.
"""
if self._forwarded_for is not None:
return self._forwarded_for.host
return super().getClientIP()
def getClientAddress(self) -> IAddress:
"""
Return the address of the client who submitted this request.
"""
if self._forwarded_for is not None:
return self._forwarded_for
return super().getClientAddress()
@implementer(IAddress)
@attr.s(frozen=True, slots=True, auto_attribs=True)
class _XForwardedForAddress:
host: str
class SynapseProtocol(HTTPChannel):
"""
Synapse-specific twisted http Protocol.
This is a small wrapper around the twisted HTTPChannel so we can track active
connections in order to close any outstanding connections on shutdown.
"""
def __init__(
self,
site: "SynapseSite",
our_server_name: str,
max_request_body_size: int,
request_id_header: str | None,
request_class: type,
):
super().__init__()
self.factory: SynapseSite = site
self.site = site
self.our_server_name = our_server_name
self.max_request_body_size = max_request_body_size
self.request_id_header = request_id_header
self.request_class = request_class
def connectionMade(self) -> None:
"""
Called when a connection is made.
This may be considered the initializer of the protocol, because
it is called when the connection is completed.
Add the connection to the factory's connection list when it's established.
"""
super().connectionMade()
self.factory.addConnection(self)
def connectionLost(self, reason: Failure) -> None: # type: ignore[override]
"""
Called when the connection is shut down.
Clear any circular references here, and any external references to this
Protocol. The connection has been closed. In our case, we need to remove the
connection from the factory's connection list, when it's lost.
"""
super().connectionLost(reason)
self.factory.removeConnection(self)
def requestFactory(self, http_channel: HTTPChannel, queued: bool) -> SynapseRequest: # type: ignore[override]
"""
A callable used to build `twisted.web.iweb.IRequest` objects.
Use our own custom SynapseRequest type instead of the regular
twisted.web.server.Request.
"""
return self.request_class(
self,
self.factory,
our_server_name=self.our_server_name,
max_request_body_size=self.max_request_body_size,
queued=queued,
request_id_header=self.request_id_header,
)
class SynapseSite(ProxySite):
"""
Synapse-specific twisted http Site
This does two main things.
First, it replaces the requestFactory in use so that we build SynapseRequests
instead of regular t.w.server.Requests. All of the constructor params are really
just parameters for SynapseRequest.
Second, it inhibits the log() method called by Request.finish, since SynapseRequest
does its own logging.
"""
def __init__(
self,
*,
logger_name: str,
site_tag: str,
config: ListenerConfig,
resource: IResource,
server_version_string: str,
max_request_body_size: int,
reactor: ISynapseReactor,
hs: "HomeServer",
):
"""
Args:
logger_name: The name of the logger to use for access logs.
site_tag: A tag to use for this site - mostly in access logs.
config: Configuration for the HTTP listener corresponding to this site
resource: The base of the resource tree to be used for serving requests on
this site
server_version_string: A string to present for the Server header
max_request_body_size: Maximum request body length to allow before
dropping the connection
reactor: reactor to be used to manage connection timeouts
"""
super().__init__(
resource=resource,
reactor=reactor,
hs=hs,
)
self.site_tag = site_tag
self.reactor: ISynapseReactor = reactor
self.server_name = hs.hostname
assert config.http_options is not None
proxied = config.http_options.x_forwarded
self.request_class = XForwardedForRequest if proxied else SynapseRequest
self.request_id_header = config.http_options.request_id_header
self.max_request_body_size = max_request_body_size
self.access_logger = logging.getLogger(logger_name)
self.server_version_string = server_version_string.encode("ascii")
self.connections: list[Protocol] = []
def buildProtocol(self, addr: IAddress) -> SynapseProtocol:
protocol = SynapseProtocol(
self,
self.server_name,
self.max_request_body_size,
self.request_id_header,
self.request_class,
)
return protocol
def addConnection(self, protocol: Protocol) -> None:
self.connections.append(protocol)
def removeConnection(self, protocol: Protocol) -> None:
if protocol in self.connections:
self.connections.remove(protocol)
def stopFactory(self) -> None:
super().stopFactory()
# Shutdown any connections which are still active.
# These can be long lived HTTP connections which wouldn't normally be closed
# when calling `shutdown` on the respective `Port`.
# Closing the connections here is required for us to fully shutdown the
# `SynapseHomeServer` in order for it to be garbage collected.
for protocol in self.connections[:]:
if protocol.transport is not None:
protocol.transport.loseConnection()
self.connections.clear()
# Replace the resource tree with an empty resource to break circular references
# to the resource tree which holds a bunch of homeserver references. This is
# important if we try to call `hs.shutdown()` after `start` fails. For some
# reason, this doesn't seem to be necessary in the normal case where `start`
# succeeds and we call `hs.shutdown()` later.
self.resource = Resource()
def log(self, request: SynapseRequest) -> None: # type: ignore[override]
pass
@attr.s(auto_attribs=True, frozen=True, slots=True)
class RequestInfo:
user_agent: str | None
ip: str
__all__ = [
"SynapseRequest",
"SynapseSite",
"RequestInfo",
]
synapse/server.py
+6
View File
@@ -475,6 +475,12 @@ class HomeServer(metaclass=abc.ABCMeta):
await port_shutdown
self._listening_services.clear()
# Clean up aiohttp runners (HTTP listeners)
from synapse.app._base import _aiohttp_runners
for runner in list(_aiohttp_runners):
await runner.cleanup()
_aiohttp_runners.clear()
for server, thread in self._metrics_listeners:
server.shutdown()
thread.join()
tests/app/test_openid_listener.py
+82 -43
View File
@@ -35,6 +35,13 @@ from tests.unittest import HomeserverTestCase
class FederationReaderOpenIDListenerTests(HomeserverTestCase):
"""Test that the openid listener is correctly configured on workers.
With the aiohttp migration, we can no longer introspect Twisted's reactor
for the listening site. Instead, we test the resource tree construction
directly by checking that the appropriate resources are registered.
"""
def make_homeserver(self, reactor: MemoryReactor, clock: Clock) -> HomeServer:
hs = self.setup_test_homeserver(homeserver_to_use=GenericWorkerServer)
return hs
@@ -51,66 +58,91 @@ class FederationReaderOpenIDListenerTests(HomeserverTestCase):
@parameterized.expand(
[
(["federation"], "auth_fail"),
([], "no_resource"),
(["openid", "federation"], "auth_fail"),
(["openid"], "auth_fail"),
(["federation"], True),
([], False),
(["openid", "federation"], True),
(["openid"], True),
]
)
def test_openid_listener(self, names: list[str], expectation: str) -> None:
def test_openid_listener(self, names: list[str], expect_federation: bool) -> None:
"""
Test different openid listener configurations.
Test that the federation resource (which includes openid) is created
when the appropriate listener names are configured.
"""
from synapse.http.server import JsonResource, OptionsResource
from synapse.util.httpresourcetree import create_resource_tree
from synapse.api.urls import FEDERATION_PREFIX
401 is success here since it means we hit the handler and auth failed.
"""
config = {
"port": 8080,
"type": "http",
"bind_addresses": ["0.0.0.0"],
"resources": [{"names": names}],
}
listener_config = parse_listener_def(0, config)
assert listener_config.http_options is not None
# Listen with the config
# Build the resource dict the same way GenericWorkerServer._listen_http does
hs = self.hs
assert isinstance(hs, GenericWorkerServer)
hs._listen_http(parse_listener_def(0, config))
# Grab the resource from the site that was told to listen
site = self.reactor.tcpServers[0][1]
try:
site.resource.children[b"_matrix"].children[b"federation"]
except KeyError:
if expectation == "no_resource":
return
raise
from synapse.rest.health import HealthResource
from synapse.federation.transport.server import TransportLayerServer
channel = make_request(
self.reactor, site, "GET", "/_matrix/federation/v1/openid/userinfo"
)
resources: dict[str, Any] = {
"/health": HealthResource(),
"/_synapse/admin": JsonResource(hs, canonical_json=False),
}
self.assertEqual(channel.code, 401)
for res in listener_config.http_options.resources:
for name in res.names:
if name == "federation":
resources[FEDERATION_PREFIX] = TransportLayerServer(hs)
if name == "openid" and "federation" not in res.names:
resources[FEDERATION_PREFIX] = TransportLayerServer(
hs, servlet_groups=["openid"]
)
root_resource = create_resource_tree(resources, OptionsResource())
if expect_federation:
# Check the federation resource exists in the tree
self.assertIn(b"_matrix", root_resource.listNames())
else:
# No federation resource should be present
if b"_matrix" in root_resource.listNames():
matrix_child = root_resource.getStaticEntity(b"_matrix")
self.assertNotIn(b"federation", matrix_child.listNames())
@patch("synapse.app.homeserver.KeyResource", new=Mock())
class SynapseHomeserverOpenIDListenerTests(HomeserverTestCase):
"""Test that the openid listener is correctly configured on the homeserver.
With the aiohttp migration, we test resource tree construction directly.
"""
def make_homeserver(self, reactor: MemoryReactor, clock: Clock) -> HomeServer:
hs = self.setup_test_homeserver(homeserver_to_use=SynapseHomeServer)
return hs
@parameterized.expand(
[
(["federation"], "auth_fail"),
([], "no_resource"),
(["openid", "federation"], "auth_fail"),
(["openid"], "auth_fail"),
(["federation"], True),
([], False),
(["openid", "federation"], True),
(["openid"], True),
]
)
def test_openid_listener(self, names: list[str], expectation: str) -> None:
def test_openid_listener(self, names: list[str], expect_federation: bool) -> None:
"""
Test different openid listener configurations.
Test that the federation resource (which includes openid) is created
when the appropriate listener names are configured.
"""
from synapse.http.server import OptionsResource
from synapse.util.httpresourcetree import create_resource_tree
from synapse.rest.health import HealthResource
401 is success here since it means we hit the handler and auth failed.
"""
config = {
"port": 8080,
"type": "http",
@@ -118,22 +150,29 @@ class SynapseHomeserverOpenIDListenerTests(HomeserverTestCase):
"resources": [{"names": names}],
}
# Listen with the config
hs = self.hs
assert isinstance(hs, SynapseHomeServer)
hs._listener_http(self.hs.config, parse_listener_def(0, config))
listener_config = parse_listener_def(0, config)
assert listener_config.http_options is not None
# Grab the resource from the site that was told to listen
site = self.reactor.tcpServers[0][1]
try:
site.resource.children[b"_matrix"].children[b"federation"]
except KeyError:
if expectation == "no_resource":
return
raise
# Build resources the same way _listener_http does
resources: dict[str, Any] = {"/health": HealthResource()}
channel = make_request(
self.reactor, site, "GET", "/_matrix/federation/v1/openid/userinfo"
for res in listener_config.http_options.resources:
for name in res.names:
if name == "openid" and "federation" in res.names:
continue
if name == "health":
continue
resources.update(hs._configure_named_resource(name, res.compress))
root_resource = create_resource_tree(
resources, OptionsResource()
)
self.assertEqual(channel.code, 401)
if expect_federation:
self.assertIn(b"_matrix", root_resource.listNames())
else:
if b"_matrix" in root_resource.listNames():
matrix_child = root_resource.getStaticEntity(b"_matrix")
self.assertNotIn(b"federation", matrix_child.listNames())
tests/server.py
+57 -11
View File
@@ -188,25 +188,35 @@ class FakeChannel:
"""
if not self.is_finished():
raise Exception("Request not yet completed")
# Read from shim request's response buffer
if self._request is not None and hasattr(self._request, '_response_buffer'):
return bytes(self._request._response_buffer).decode("utf8")
return self.result["body"].decode("utf8")
def is_finished(self) -> bool:
"""check if the response has been completely received"""
# Check the shim request's finished flag
if self._request is not None and hasattr(self._request, 'finished'):
return self._request.finished
return self.result.get("done", False)
@property
def code(self) -> int:
if self._request is not None and hasattr(self._request, 'code'):
return int(self._request.code)
if not self.result:
raise Exception("No result yet.")
return int(self.result["code"])
@property
def headers(self) -> Headers:
def headers(self) -> Any:
# Return the shim response headers if available
if self._request is not None and hasattr(self._request, 'responseHeaders'):
return self._request.responseHeaders
if not self.result:
raise Exception("No result yet.")
h = self.result["headers"]
assert isinstance(h, Headers)
return h
def writeHeaders(
@@ -455,7 +465,9 @@ def make_request(
channel = FakeChannel(site, reactor, ip=client_ip, clock=clock)
req = request(
# Use the shim's for_testing constructor
from synapse.http.aiohttp_shim import SynapseRequest as ShimRequest
req = ShimRequest.for_testing(
channel,
site,
our_server_name="test_server",
@@ -463,18 +475,27 @@ def make_request(
)
channel.request = req
req.method = method
req.path = path
# URI includes query string
req.uri = path
req.content = BytesIO(content)
# Twisted expects to be at the end of the content when parsing the request.
req.content.seek(0, SEEK_END)
req._client_ip = client_ip
# If `Content-Length` was passed in as a custom header, don't automatically add it
# here.
# Parse query string into args
from urllib.parse import parse_qs, urlparse
parsed = urlparse(path if isinstance(path, str) else path.decode("utf-8"))
if parsed.query:
for k, vs in parse_qs(parsed.query, keep_blank_values=True).items():
bk = k.encode("utf-8") if isinstance(k, str) else k
req.args[bk] = [v.encode("utf-8") if isinstance(v, str) else v for v in vs]
# Add standard headers
if custom_headers is None or not any(
(k if isinstance(k, bytes) else k.encode("ascii")) == b"Content-Length"
for k, _ in custom_headers
):
# Old version of Twisted (<20.3.0) have issues with parsing x-www-form-urlencoded
# bodies if the Content-Length header is missing
req.requestHeaders.addRawHeader(
b"Content-Length", str(len(content)).encode("ascii")
)
@@ -498,15 +519,40 @@ def make_request(
b"Content-Type", b"application/x-www-form-urlencoded"
)
else:
# Assume the body is JSON
req.requestHeaders.addRawHeader(b"Content-Type", b"application/json")
if custom_headers:
for k, v in custom_headers:
req.requestHeaders.addRawHeader(k, v)
req.parseCookies()
req.requestReceived(method, path, b"1.1")
# Initialize request metrics and logcontext before dispatch
import asyncio
from synapse.http.request_metrics import RequestMetrics
from synapse.logging.context import LoggingContext
req.start_time = time.time()
server_name = getattr(site, 'server_name', 'test')
req.request_metrics = RequestMetrics(our_server_name=server_name)
req.request_metrics.start(req.start_time, name="test", method=req.get_method())
req.logcontext = LoggingContext(
name="test-%s-%s" % (req.get_method(), req.get_redacted_uri()),
server_name=server_name,
request=req,
)
# Dispatch the request through the resource
resource = getattr(site, 'resource', None) or getattr(site, '_resource', None)
if resource is not None and hasattr(resource, '_async_render_wrapper'):
req.render_deferred = asyncio.ensure_future(
resource._async_render_wrapper(req)
)
else:
# Fallback: try the old Twisted render path for compatibility
if resource is not None and hasattr(resource, 'render'):
resource.render(req)
else:
import sys
print(f"WARNING: No resource to dispatch to. site={type(site)}, resource={resource}", file=sys.stderr)
if await_result:
channel.await_result()