M-Labs/thermostat
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Try move from Qthreads to qasync

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Signed-off-by: Egor Savkin <es@m-labs.hk>
This commit is contained in:
Egor Savkin 2023-06-26 10:20:48 +08:00
parent a79679a074
commit e0ce14c616
3 changed files with 109 additions and 44 deletions
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40
flake.nix
View File

@ -55,9 +55,45 @@
dontFixup = true;
};
qasync = pkgs.python3Packages.buildPythonPackage rec {
pname = "qasync";
version = "0.24.0";
src = pkgs.fetchFromGitHub {
owner = "CabbageDevelopment";
repo = "qasync";
rev = "v${version}";
sha256 = "sha256-ls5F+VntXXa3n+dULaYWK9sAmwly1nk/5+RGWLrcf2Y=";
};
propagatedBuildInputs = [ pkgs.python3Packages.pyqt6 ];
nativeCheckInputs = [ pkgs.python3Packages.pytest ];
checkPhase = ''
pytest -k 'test_qthreadexec.py' # the others cause the test execution to be aborted, I think because of asyncio
'';
};
thermostat_gui = pkgs.python3Packages.buildPythonPackage rec {
pname = "thermostat_gui";
version = "0.0.0";
src = self;
preBuild =
''
export VERSIONEER_OVERRIDE=${version}
export VERSIONEER_REV=v0.0.0
'';
nativeBuildInputs = [ pkgs.qt6.wrapQtAppsHook ];
propagatedBuildInputs = (with pkgs.python3Packages; [ pyqtgraph pyqt6 qasync]);
dontWrapQtApps = true;
postFixup = ''
ls -al $out/
wrapQtApp "$out/pytec/tec_qt"
'';
};
in {
packages.x86_64-linux = {
inherit thermostat;
inherit thermostat qasync thermostat_gui;
};
hydraJobs = {
@ -69,7 +105,7 @@
buildInputs = with pkgs; [
rust openocd dfu-util
] ++ (with python3Packages; [
numpy matplotlib pyqtgraph setuptools pyqt6
numpy matplotlib pyqtgraph setuptools pyqt6 qasync
]);
};
defaultPackage.x86_64-linux = thermostat;

1
pytec/pytec/client.py
View File

@ -40,6 +40,7 @@ class Client:
line = self._read_line()
response = json.loads(line)
logging.debug(f"{command}: {response}")
if "error" in response:
raise CommandError(response["error"])
return response

112
pytec/tec_qt.py
View File

@ -6,7 +6,10 @@ import pyqtgraph as pg
import sys
import argparse
import logging
import asyncio
import atexit
from pytec.client import Client
from qasync import QEventLoop
# pyuic6 -x tec_qt.ui -o ui_tec_qt.py
from ui_tec_qt import Ui_MainWindow
@ -16,7 +19,7 @@ tec_client: Client = None
# ui = None
ui: Ui_MainWindow = None
thread_pool = QThreadPool.globalInstance()
queue = None
connection_watcher = None
client_watcher = None
app: QtWidgets.QApplication = None
@ -35,7 +38,43 @@ def get_argparser():
return parser
class WatchConnectTask(QThread):
def wrap_client_task(func, *args, **kwargs):
loop = asyncio.get_event_loop()
task = ClientTask(func, *args, **kwargs)
asyncio.ensure_future(queue.put(task), loop=loop)
async def process_client_tasks():
global queue
if queue is None:
queue = asyncio.Queue()
loop = asyncio.get_event_loop()
while True:
task = await queue.get()
await task.run()
queue.task_done()
class ClientTask:
def __init__(self, func, *args, **kwargs):
self.func = func
self.args = args
self.kwargs = kwargs
super().__init__()
async def run(self):
try:
lock = asyncio.Lock()
async with lock:
self.func(*self.args, **self.kwargs)
except (TimeoutError, OSError):
logging.warning("Client connection error, disconnecting", exc_info=True)
if connection_watcher:
#thread_pool.clear() # clearing all next requests
connection_watcher.client_disconnected()
class WatchConnectTask(QObject):
connected = pyqtSignal(bool)
hw_rev = pyqtSignal(dict)
connecting = pyqtSignal()
@ -57,8 +96,8 @@ class WatchConnectTask(QThread):
self.connecting.emit()
tec_client = Client(host=self.ip, port=self.port, timeout=30)
self.connected.emit(True)
thread_pool.start(ClientTask(lambda: self.hw_rev.emit(tec_client.hw_rev())))
#thread_pool.start(ClientTask(lambda: self.fan_update.emit(tec_client.fan())))
wrap_client_task(lambda: self.hw_rev.emit(tec_client.hw_rev()))
# wrap_client_task(lambda: self.fan_update.emit(tec_client.fan()))
except Exception as e:
logging.error(f"Failed communicating to the {self.ip}:{self.port}: {e}")
self.connected.emit(False)
@ -72,7 +111,8 @@ class WatchConnectTask(QThread):
self.connected.emit(False)
class ClientWatcher(QThread):
class ClientWatcher(QObject):
fan_update = pyqtSignal(object)
pwm_update = pyqtSignal(object)
report_update = pyqtSignal(object)
@ -83,10 +123,10 @@ class ClientWatcher(QThread):
self.running = True
super().__init__(parent)
def run(self):
async def run(self):
while self.running:
thread_pool.start(ClientTask(lambda: self.update_params()))
self.msleep(int(self.update_s * 1000))
wrap_client_task(lambda: self.update_params())
await asyncio.sleep(int(self.update_s * 1000))
def update_params(self):
self.fan_update.emit(tec_client.fan())
@ -94,34 +134,17 @@ class ClientWatcher(QThread):
@pyqtSlot()
def stop_watching(self):
self.running = False
deadline = QDeadlineTimer()
deadline.setDeadline(100)
self.wait(deadline)
self.terminate()
#deadline = QDeadlineTimer()
#deadline.setDeadline(100)
#self.wait(deadline)
#self.terminate()
@pyqtSlot()
def set_update_s(self):
self.update_s = ui.report_refresh_spin.value()
class ClientTask(QRunnable):
def __init__(self, func, *args, **kwargs):
self.func = func
self.args = args
self.kwargs = kwargs
super().__init__()
def run(self):
try:
self.func(*self.args, **self.kwargs)
except (TimeoutError, OSError):
logging.warning("Client connection error, disconnecting", exc_info=True)
if connection_watcher:
thread_pool.clear() # clearing all next requests
connection_watcher.client_disconnected()
def connected(result):
def on_connection_changed(result):
global client_watcher, connection_watcher
ui.graph_group.setEnabled(result)
ui.hw_rev_lbl.setEnabled(result)
@ -143,7 +166,7 @@ def connected(result):
client_watcher.fan_update.connect(fan_update)
ui.report_apply_btn.clicked.connect(client_watcher.set_update_s)
app.aboutToQuit.connect(client_watcher.stop_watching)
client_watcher.start()
wrap_client_task(client_watcher.run)
def hw_rev(hw_rev_d: dict):
@ -173,7 +196,7 @@ def fan_set():
global tec_client
if tec_client is None or ui.fan_auto_box.isChecked():
return
thread_pool.start(ClientTask(lambda: tec_client.set_param("fan", ui.fan_power_slider.value())))
wrap_client_task(lambda: tec_client.set_param("fan", ui.fan_power_slider.value()))
def fan_auto_set(enabled):
@ -182,37 +205,41 @@ def fan_auto_set(enabled):
return
ui.fan_power_slider.setEnabled(not enabled)
if enabled:
thread_pool.start(ClientTask(lambda: tec_client.set_param("fan", "auto")))
wrap_client_task(lambda: tec_client.set_param("fan", "auto"))
else:
thread_pool.start(ClientTask(lambda: tec_client.set_param("fan", ui.fan_power_slider.value())))
wrap_client_task(lambda: tec_client.set_param("fan", ui.fan_power_slider.value()))
def connect():
global connection_watcher
connection_watcher = WatchConnectTask(ui.main_widget, ui.ip_set_line.text(), ui.port_set_spin.value())
connection_watcher.connected.connect(connected)
connection_watcher.connected.connect(on_connection_changed)
connection_watcher.connecting.connect(lambda: ui.status_lbl.setText("Connecting..."))
connection_watcher.hw_rev.connect(hw_rev)
connection_watcher.fan_update.connect(fan_update)
connection_watcher.start()
app.aboutToQuit.connect(connection_watcher.terminate)
wrap_client_task(connection_watcher.run)
#app.aboutToQuit.connect(connection_watcher.terminate)
def main():
global ui, thread_pool, app
global ui, app, queue
args = get_argparser().parse_args()
if args.logLevel:
logging.basicConfig(level=getattr(logging, args.logLevel))
app = QtWidgets.QApplication(sys.argv)
loop = QEventLoop(app)
asyncio.set_event_loop(loop)
atexit.register(loop.close)
loop.create_task(process_client_tasks())
main_window = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(main_window)
# ui = uic.loadUi('tec_qt.ui', main_window)
thread_pool = QThreadPool(parent=ui.main_widget)
thread_pool.setMaxThreadCount(1) # avoid concurrent requests
ui.connect_btn.clicked.connect(lambda _checked: connect())
ui.fan_power_slider.valueChanged.connect(fan_set)
ui.fan_auto_box.stateChanged.connect(fan_auto_set)
@ -225,7 +252,8 @@ def main():
ui.connect_btn.click()
main_window.show()
sys.exit(app.exec())
loop.run_until_complete(app.exec())
if __name__ == '__main__':