moment/harmonyqml/backend/client.py
miruka 13fca98838 Rooms and threads fixes
- Fix roomList height again, now based on model.count().
  All delegates are assumed to be the same height

- Properly update room list when a room is joined or left

- Catch exceptions happening in threads (futures), which previously
  passed silently

- Show "Empty room?" as "<i>Empty Room</i>" + gray [?] avatar
2019-04-13 08:59:10 -04:00

135 lines
3.7 KiB
Python

# Copyright 2019 miruka
# This file is part of harmonyqml, licensed under GPLv3.
import functools
import logging
import sys
import traceback
from concurrent.futures import Future, ThreadPoolExecutor
from threading import Event, currentThread
from typing import Callable, DefaultDict, Dict
from PyQt5.QtCore import QObject, pyqtProperty, pyqtSignal, pyqtSlot
import nio
import nio.responses as nr
from .model.items import User
# One pool per hostname/remote server;
# multiple Client for different accounts on the same server can exist.
_POOLS: DefaultDict[str, ThreadPoolExecutor] = \
DefaultDict(lambda: ThreadPoolExecutor(max_workers=6))
def futurize(func: Callable) -> Callable:
@functools.wraps(func)
def wrapper(*args, **kwargs) -> Future:
def run_and_catch_errs():
# Without this, exceptions are silently ignored
try:
func(*args, **kwargs)
except Exception:
traceback.print_exc()
logging.error("Exiting %s due to exception.", currentThread())
sys.exit(1)
return args[0].pool.submit(run_and_catch_errs) # args[0] = self
return wrapper
class Client(QObject):
roomInvited = pyqtSignal(str)
roomJoined = pyqtSignal(str)
roomLeft = pyqtSignal(str)
def __init__(self, hostname: str, username: str, device_id: str = ""
) -> None:
super().__init__()
host, *port = hostname.split(":")
self.host: str = host
self.port: int = int(port[0]) if port else 443
self.nio: nio.client.HttpClient = \
nio.client.HttpClient(self.host, username, device_id)
self.pool: ThreadPoolExecutor = _POOLS[self.host]
from .network_manager import NetworkManager
self.net: NetworkManager = NetworkManager(self)
self._stop_sync: Event = Event()
def __repr__(self) -> str:
return "%s(host=%r, port=%r, user_id=%r)" % \
(type(self).__name__, self.host, self.port, self.userID)
@pyqtProperty(str, constant=True)
def userID(self) -> str:
return self.nio.user_id
@pyqtSlot(str)
@pyqtSlot(str, str)
@futurize
def login(self, password: str, device_name: str = "") -> None:
self.net.write(self.nio.connect())
self.net.talk(self.nio.login, password, device_name)
self.startSyncing()
@pyqtSlot(str, str, str)
@futurize
def resumeSession(self, user_id: str, token: str, device_id: str
) -> None:
self.net.write(self.nio.connect())
response = nr.LoginResponse(user_id, device_id, token)
self.nio.receive_response(response)
self.startSyncing()
@pyqtSlot()
@futurize
def logout(self) -> None:
self._stop_sync.set()
self.net.write(self.nio.disconnect())
@pyqtSlot()
@futurize
def startSyncing(self) -> None:
while True:
self._on_sync(self.net.talk(self.nio.sync, timeout=10_000))
if self._stop_sync.is_set():
self._stop_sync.clear()
break
def _on_sync(self, response: nr.SyncResponse) -> None:
for room_id in response.rooms.invite:
self.roomInvited.emit(room_id)
for room_id in response.rooms.join:
self.roomJoined.emit(room_id)
for room_id in response.rooms.leave:
self.roomLeft.emit(room_id)
@pyqtSlot(str, str, result="QVariantMap")
def getUser(self, room_id: str, user_id: str) -> Dict[str, str]:
try:
name = self.nio.rooms[room_id].user_name(user_id)
except KeyError:
name = None
return User(
user_id = user_id,
display_name = name or user_id,
)._asdict()