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#!/usr/bin/env python
#
# The MIT License (MIT)
#
# Copyright (c) 2020 Matthias P. Braendli, Maximilien Cuony
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
import time
from geventwebsocket.handler import WebSocketHandler
from gevent import pywsgi, Timeout
from time import sleep
from flask import Flask, render_template, jsonify
from flask_sockets import Sockets
import serialrx
import adsl
app = Flask(__name__)
sockets = Sockets(app)
ser = serialrx.SerialRX()
adsl = adsl.ADSL(ser)
@app.route('/')
def index():
return render_template('index.html', last_lines=ser.get_last_lines())
@app.route('/stats')
def stats():
t_now = time.time()
values = ser.get_parsed_values()
out_json = {}
for k in values:
value, ts = values[k]
if ts + 60 < t_now:
out_json[k] = None
else:
out_json[k] = value
return jsonify(out_json)
@sockets.route('/stream')
def stream(socket):
try:
queue = ser.register_client()
error = False
while not socket.closed and not error:
# Force to check if the client is still here
try:
with Timeout(0.1, False):
socket.receive()
except:
pass
try:
line = queue.popleft()
socket.send(line)
except IndexError:
pass
except:
error = True
sleep(0.1)
except:
raise
finally:
ser.unregister_client(queue)
ser.start()
adsl.start()
if __name__ == "__main__":
print("You're running in dev mode, only one client at a time will works ! Please use gunicorn to fix this :)")
try:
http_server = pywsgi.WSGIServer(('', 5000), app, handler_class=WebSocketHandler)
http_server.serve_forever()
except KeyboardInterrupt:
print("Ctrl-C received, quitting")
finally:
ser.stop()
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