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#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
from typing import Optional, Union, TYPE_CHECKING, Any
from ._events import Event
from ._io import PN_INVALID_SOCKET
if TYPE_CHECKING:
from ._events import EventType
from ._reactor import Container, EventInjector
from socket import socket
class Selectable(object):
def __init__(
self,
delegate: Optional[Union['EventInjector', 'socket']],
reactor: 'Container',
) -> None:
self._delegate = delegate
self.reading = False
self.writing = False
self._deadline = 0
self._terminal = False
self._released = False
self._terminated = False
self._reactor = reactor
self.push_event(self, Event.SELECTABLE_INIT)
def close(self) -> None:
if self._delegate and not self._released:
self._delegate.close()
def fileno(self) -> int:
if self._delegate:
return self._delegate.fileno()
else:
return PN_INVALID_SOCKET
def __getattr__(self, name: str) -> Any:
return getattr(self._delegate, name)
@property
def deadline(self) -> Optional[float]:
tstamp = self._deadline
if tstamp:
return tstamp
else:
return None
@deadline.setter
def deadline(self, deadline: Optional[float]) -> None:
if not deadline:
self._deadline = 0
else:
self._deadline = deadline
def push_event(
self,
context: 'Selectable',
etype: 'EventType',
) -> None:
self._reactor.push_event(context, etype)
def update(self) -> None:
if not self._terminated:
if self._terminal:
self._terminated = True
self.push_event(self, Event.SELECTABLE_FINAL)
else:
self.push_event(self, Event.SELECTABLE_UPDATED)
def readable(self) -> None:
self.push_event(self, Event.SELECTABLE_READABLE)
def writable(self) -> None:
self.push_event(self, Event.SELECTABLE_WRITABLE)
def expired(self) -> None:
self.push_event(self, Event.SELECTABLE_EXPIRED)
@property
def is_terminal(self) -> bool:
return self._terminal
def terminate(self) -> None:
self._terminal = True
def release(self) -> None:
self._released = True
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