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main.py
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main.py
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import argparse
import time
from typing import Dict
from loguru import logger
import pathlib
from multiprocessing import Queue
import responder
from threading import Thread
import os
from dataclasses import dataclass, asdict
import json
from functools import reduce
from operator import xor
from datetime import datetime as dt
from receiver import Receiver
from dbsession import DBSession
from mc import fromUDP
from websocketServer import WebsocketServer
from gps import GPS
from patrol import Patrol
class Main(responder.API):
def __init__(self, *, port: str, baudrate: int, path: str = 'db', bs: int = 32, to: int = 5, http: int = 8080):
super().__init__()
pid = os.getpid()
logger.info('*** NMEA Recorder startup (%d)' % pid)
self.process: Dict[str, int] = {}
self.process['main'] = pid
self.ppp: Dict[str, Patrol] = {}
self.ppp['main'] = Patrol(pid=pid)
self.ready: bool = True
self.g = GPS()
self.ws = WebsocketServer(debug=True)
self.qp = Queue()
self.dbsession = DBSession(path=pathlib.Path(path), buffersize=bs, timeout=to)
self.dbsession.start()
self.process[self.dbsession.name] = self.dbsession.pid
self.ppp[self.dbsession.name] = Patrol(pid=self.dbsession.pid)
self.receiver = Receiver(port=port, baudrate=baudrate, qp=self.qp)
self.receiver.start()
self.process[self.receiver.name] = self.receiver.pid
self.ppp[self.receiver.name] = Patrol(pid=self.receiver.pid)
self.mc = fromUDP(quePoint=self.qp, mcip='239.192.0.1', mcport=60001)
self.mc.start()
self.process[self.mc.name] = self.mc.pid
self.ppp[self.mc.name] = Patrol(pid=self.mc.pid)
self.main = Thread(target=self.collector, name='MainLoop', daemon=True)
self.main.start()
self.p = Thread(target=self.patrol, name='Patrol', daemon=True)
self.p.start()
for k, v in self.ppp.items():
v.start()
self.add_route('/ws', self.ws.wsserver, websocket=True)
self.add_route('/', self.top)
self.add_route('/main.js', self.mainJS)
self.add_route('/classes.js', self.classes)
self.add_event_handler('shutdown', self.cleanup) # notice!
self.run(address='0.0.0.0', port=http)
async def cleanup(self):
self.dbsession.join()
self.receiver.join()
self.mc.join()
logger.debug('... OK! shutdown')
def top(self, req: responder.Request, resp: responder.Response):
resp.content = self.template('index.html')
def classes(self, req: responder.Request, resp: responder.Response):
resp.content = self.template('classes.js')
def mainJS(self, req: responder.Request, resp: responder.Response):
resp.content = self.template('main.js')
def collector(self):
loop: bool = True
try:
while loop:
try:
raw: bytes = self.receiver.qp.get()
except (KeyboardInterrupt,) as e:
break
else:
self.dbsession.qp.put(raw)
part = raw.split(b'*')
if len(part) > 1:
main = part[0][1:]
csum = int(part[1][:2], 16)
calc = reduce(xor, main, 0)
if calc != csum:
logger.error('!!! bad checksum')
else:
item = main.split(b',')
symbol = item[0]
prefix = symbol[0:2]
suffix = symbol[2:5]
if prefix == b'GP':
if suffix == b'RMC':
location = self.g.get(item=item)
ooo = {'type': 'location', 'info': asdict(location)}
self.ws.broadcast(message=json.dumps(ooo))
if location.valid:
print(location)
except KeyboardInterrupt as e:
loop = False
def patrol(self):
loop: bool = True
try:
while loop:
time.sleep(5)
stats = {'type': 'stats', 'info': {}}
# logger.info('--------------------------------------------------------------------')
for k, v in self.ppp.items():
stats['info'][k] = asdict(v.stats)
# logger.info(stats)
self.ws.broadcast(message='%s' % json.dumps(stats, indent=2))
except KeyboardInterrupt as e:
loop = False
if __name__ == '__main__':
portDefault: str = '/dev/ttyACM0:9600'
toDefault: int = 5
bsDefault: int = 2500
parser = argparse.ArgumentParser()
parser.add_argument('-p', '--port', help='name:baudrate of port', default=portDefault)
parser.add_argument('-b', '--buffersize', help='buffersize', type=int, default=bsDefault)
parser.add_argument('-t', '--timeout', help='timeout secs', type=int, default=toDefault)
args = parser.parse_args()
port = args.port
to = args.timeout
bs = args.buffersize
try:
ooo: str = port.split(':')
name: str = ooo[0]
baudrate: int = int(ooo[1])
except (IndexError, ValueError) as e:
logger.error(e)
else:
main = Main(port=name, baudrate=baudrate, to=to, bs=bs)