collector.py

import requests
from temperature  import getTemperature

# This classes should send sensors data via socket
class Collector:

    def __init__(self, server_url='http://127.0.0.1', port="3000"):
        self.temperature = 0.0
        self.volume = 0 # in ml, int
        self.machine_status = "true"
        self.sent_status = False
        # Rails API is running in localhost:3000
        self.server_url = server_url + ':' + str(port) + '/setsensors'

    # Collect all sensors data
    def collect(self):
        self.machine_status = "true"
        try:
            self.temperature = getTemperature()
        except:
            self.machine_status = "false"
        try:
            f = open("/home/pi/autochopp-machine/embedded_electronics/tmp/volume.vol", "r")
            self.volume = int(f.read())
            f.close()
        except:
            self.machine_status = "false"

    # Send the HTTP POST request
    def send_to_server(self):
        data = {
            'temperature': self.temperature,
            'volume': self.volume,
            'machine_status': self.machine_status
            }
        r = requests.post(self.server_url, data)
        if r.status_code == 204:
            self.sent_status = True
        else:
            self.sent_status = False    


####################### TEST ###################
if __name__=="__main__":
    test = Collector("https://fast-retreat-18030.herokuapp.com", '')
    import time
    
    while(1):
        try:
            test.collect()
            print "\nTemperature: ",  test.temperature
            print "Volume: ", test.volume
            test.send_to_server()
            print "Sent status: ", test.sent_status
            time.sleep(60)
        except KeyboardInterrupt:
            break