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FireBase.py
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FireBase.py
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#-------------------------------------------------------------------------------
# Copyright 2015 Congduc Pham, University of Pau, France.
#
#
# This file is part of the low-cost LoRa gateway developped at University of Pau
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with the program. If not, see <http://www.gnu.org/licenses/>.
#-------------------------------------------------------------------------------
# adapted by N. Bertuol under C. Pham supervision
#
#
import urllib2
import socket
import time
import datetime
import ssl
#change here for your own firebase url when you have one
firebase_database='https://XXXXXXXXXXX.firebaseio.com'
# didn't get a response from firebase server?
connection_failure = False
# function to check connection availability with the server
def test_network_available():
connection = False
iteration = 0
response = None
# we try 4 times to connect to the server.
while(not connection and iteration < 4) :
try:
# 3sec timeout in case of server available but overcrowded
response=urllib2.urlopen('https://www.firebase.com/', timeout=3)
connection = True
except urllib2.URLError, e: pass
except socket.timeout: pass
except ssl.SSLError: pass
# if connection_failure == True and the connection with the server is unavailable, don't waste more time, exit directly
if(connection_failure and response is None) :
print('FireBase: the server is still unavailable')
iteration = 4
# print connection failure
elif(response is None) :
print('FireBase: server unavailable, retrying to connect soon...')
# wait before retrying
time.sleep(1)
iteration += 1
return connection
# msg is already in JSON format
def send_data(msg, path):
from firebase import Firebase
try:
fbase = Firebase(path)
fbase.push(msg)
except Exception as e:
print("FireBase: can not send the data to the server:" + str(e))
print("FireBase: not uploading")
return "exception"
def firebase_uploadSingleData(msg, sensor, msg_entry, date):
global connection_failure
# test if network is available before sending to the server
connected = test_network_available()
# if we got a response from the server, send the data to it
if(connected) :
print("FireBase: uploading data")
send_to = firebase_database+date.date().isoformat()+'/'+sensor+'/'+msg_entry
time.sleep(10)
str_result = send_data(msg, send_to)
#exception while sending data, probably a disconnection error
if(str_result == "exception"):
connection_failure = True
else:
connection_failure = False
else:
print("FireBase: not uploading")
connection_failure = True