asyncio: sync with Tulip

* Cleanup gather(): use cancelled() method instead of using private Future
  attribute
* Fix _UnixReadPipeTransport and _UnixWritePipeTransport. Only start reading
  when connection_made() has been called.
* Issue #23333: Fix BaseSelectorEventLoop._accept_connection(). Close the
  transport on error. In debug mode, log errors using call_exception_handler()
This commit is contained in:
Victor Stinner 2015-01-29 14:15:19 +01:00
parent 54a231d539
commit 2934262fd3
5 changed files with 86 additions and 45 deletions

View file

@ -22,6 +22,7 @@ from . import futures
from . import selectors
from . import transports
from . import sslproto
from .coroutines import coroutine
from .log import logger
@ -181,16 +182,47 @@ class BaseSelectorEventLoop(base_events.BaseEventLoop):
else:
raise # The event loop will catch, log and ignore it.
else:
extra = {'peername': addr}
accept = self._accept_connection2(protocol_factory, conn, extra,
sslcontext, server)
self.create_task(accept)
@coroutine
def _accept_connection2(self, protocol_factory, conn, extra,
sslcontext=None, server=None):
protocol = None
transport = None
try:
protocol = protocol_factory()
waiter = futures.Future(loop=self)
if sslcontext:
self._make_ssl_transport(
conn, protocol, sslcontext,
server_side=True, extra={'peername': addr}, server=server)
transport = self._make_ssl_transport(
conn, protocol, sslcontext, waiter=waiter,
server_side=True, extra=extra, server=server)
else:
self._make_socket_transport(
conn, protocol , extra={'peername': addr},
transport = self._make_socket_transport(
conn, protocol, waiter=waiter, extra=extra,
server=server)
# It's now up to the protocol to handle the connection.
try:
yield from waiter
except:
transport.close()
raise
# It's now up to the protocol to handle the connection.
except Exception as exc:
if self.get_debug():
context = {
'message': ('Error on transport creation '
'for incoming connection'),
'exception': exc,
}
if protocol is not None:
context['protocol'] = protocol
if transport is not None:
context['transport'] = transport
self.call_exception_handler(context)
def add_reader(self, fd, callback, *args):
"""Add a reader callback."""

View file

@ -592,7 +592,7 @@ def gather(*coros_or_futures, loop=None, return_exceptions=False):
fut.exception()
return
if fut._state == futures._CANCELLED:
if fut.cancelled():
res = futures.CancelledError()
if not return_exceptions:
outer.set_exception(res)

View file

@ -298,8 +298,10 @@ class _UnixReadPipeTransport(transports.ReadTransport):
_set_nonblocking(self._fileno)
self._protocol = protocol
self._closing = False
self._loop.add_reader(self._fileno, self._read_ready)
self._loop.call_soon(self._protocol.connection_made, self)
# only start reading when connection_made() has been called
self._loop.call_soon(self._loop.add_reader,
self._fileno, self._read_ready)
if waiter is not None:
# only wake up the waiter when connection_made() has been called
self._loop.call_soon(waiter._set_result_unless_cancelled, None)
@ -401,13 +403,16 @@ class _UnixWritePipeTransport(transports._FlowControlMixin,
self._conn_lost = 0
self._closing = False # Set when close() or write_eof() called.
# On AIX, the reader trick only works for sockets.
# On other platforms it works for pipes and sockets.
# (Exception: OS X 10.4? Issue #19294.)
if is_socket or not sys.platform.startswith("aix"):
self._loop.add_reader(self._fileno, self._read_ready)
self._loop.call_soon(self._protocol.connection_made, self)
# On AIX, the reader trick (to be notified when the read end of the
# socket is closed) only works for sockets. On other platforms it
# works for pipes and sockets. (Exception: OS X 10.4? Issue #19294.)
if is_socket or not sys.platform.startswith("aix"):
# only start reading when connection_made() has been called
self._loop.call_soon(self._loop.add_reader,
self._fileno, self._read_ready)
if waiter is not None:
# only wake up the waiter when connection_made() has been called
self._loop.call_soon(waiter._set_result_unless_cancelled, None)