wetation_protocol/__init__.py

#!/usr/bin/env python
# -*- coding: UTF-8 -*-

import config
import logging
import socket_protocol
import time

from rpi_envsens.dht import dht_22
from rpi_envsens.bmp import bmp_180

logger = logging.getLogger('APP')




class my_base_protocol_tcp(socket_protocol.pure_json_protocol):
    # EXECUTE_REQUESTs
    CURRENT_ENVDATA = 0


class my_server_protocol_tcp(my_base_protocol_tcp):
    def __init__(self, comm_instance, dht_data, bmp_data, secret=None):
        socket_protocol.pure_json_protocol.__init__(self, comm_instance, secret)
        self.dht_data = dht_data
        self.bmp_data = bmp_data
        self.register_callback(self.SID_READ_REQUEST, self.CURRENT_ENVDATA, self.current_envdata)

    def data_age_okay(self, dd, bd):
        MAX_AGE = 60.
        tm = time.time()
        return dd[dht_22.KEY_TIME] + MAX_AGE >= tm and bd[bmp_180.KEY_TIME] + MAX_AGE >= tm 

    def current_envdata(self, msg):
        dd = self.dht_data.current
        bd = self.bmp_data.current
        if self.data_age_okay(bd, dd):
            rv = {}
            rv[dht_22.KEY_TEMPERATURE] = dd[dht_22.KEY_TEMPERATURE]
            rv[dht_22.KEY_HUMIDITY] = dd[dht_22.KEY_HUMIDITY]
            rv[bmp_180.KEY_PRESSURE] = bd[bmp_180.KEY_PRESSURE]
            return self.STATUS_OKAY, rv
        else:
            return self.STATUS_OPERATION_NOT_PERMITTED, None


class my_client_protocol_tcp(my_base_protocol_tcp):
    START_ROUTINE_DATA_IDS = []

    def __init__(self, comm_instance, secret=None):
        socket_protocol.pure_json_protocol.__init__(self, comm_instance, secret)
        self.register_callback(self.SID_READ_RESPONSE, self.CURRENT_ENVDATA, self.read_current_envdata)

    def __authentificate_process_feedback__(self, msg):
        if msg.get_data() is True:
            print("The client is authentificated.")
        else:
            print("AUTHENTIFICATION ERROR")
        return my_base_protocol_tcp.__authentificate_process_feedback__(self, msg)

    def read_current_envdata(self, msg):
        if msg.get_status() == self.STATUS_OKAY:
            env_data = msg.get_data()
            print("Temperature: %6.1f °C" % env_data[dht_22.KEY_TEMPERATURE])
            print("Humidity:    %6.1f %%" % env_data[dht_22.KEY_HUMIDITY])
            print("Pressure:    %6.1f mbar" % env_data[bmp_180.KEY_PRESSURE])
            return self.STATUS_OKAY, None
        else:
            print('No environmental data received!')
            return self.STATUS_SERVICE_OR_DATA_UNKNOWN, None