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websocket_server.py
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websocket_server.py
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import pyrow
import json
import asyncio
from autobahn.asyncio.websocket import WebSocketServerProtocol
from autobahn.asyncio.websocket import WebSocketServerFactory
class MyServerProtocol(WebSocketServerProtocol):
def __init__(self):
self.is_open = False
def onOpen(self):
try:
self.is_open = True
yield from self.start_sending_rowing_info()
except:
print("fail")
def onClose(self, wasClean, code, reason):
print("closing time")
self.is_open = False
@asyncio.coroutine
def start_sending_rowing_info(self):
machines = list(pyrow.find())
if len(machines) > 0:
rowing_machine = machines[0]
erg = pyrow.pyrow(rowing_machine)
while self.is_open:
monitor = erg.get_monitor(forceplot=True)
message = json.dumps(monitor).encode('utf8')
try:
self.sendMessage(message, isBinary=False)
except:
print("couldn't send message")
yield from asyncio.sleep(2)
else:
print('No machines connected')
factory = WebSocketServerFactory()
factory.protocol = MyServerProtocol
loop = asyncio.get_event_loop()
coro = loop.create_server(factory, '0.0.0.0', 9000)
server = loop.run_until_complete(coro)
try:
loop.run_forever()
except KeyboardInterrupt:
pass
finally:
server.close()
loop.close()