class GPSD(Daemon):
"""
This is the main communications controller this collects GPS
data and if we have moved more than 0.75 miles from the last
GPS location it gets sent to the back-end API.
"""
def __init__(self,
pidfile,
stdin='/dev/null',
stdout='/dev/null',
stderr='/dev/null'):
Daemon.__init__(self, pidfile, stdin, stdout, stderr)
self.location = (0, 0)
truckFile = open("/etc/cl-lcr-truck", "r")
uuidFile = open("/etc/cl-lcr-uuid", "r")
self.truck = truckFile.readline().rstrip()
self.uuid = uuidFile.readline().rstrip()
uuidFile.close()
self.lastMsg = ""
truckFile.close()
self.multiplier = 1
currentDT = datetime.datetime.now()
if currentDT.hour > 18 or currentDT.hour < 8:
self.multiplier = 20
else:
self.multiplier = 2
def addLocation(self, lat, lon):
try:
elapsed_time = time.time() - self.start_time
if lat is None or lon is None:
if elapsed_time > (230 * self.multiplier):
self.start_time = time.time()
self.callGps(True)
return False
moved = distance.distance(self.location, (lat, lon)).miles
if elapsed_time > (120 * self.multiplier):
if moved > 0.9:
self.compressGps(lat, lon)
elif elapsed_time > (880 * self.multiplier):
self.compressGps(lat, lon)
except:
print "Add Location Error"
pass
def compressGps(self, lat=None, lon=None):
try:
currentDT = datetime.datetime.now()
if currentDT.hour > 18 or currentDT.hour < 8:
self.multiplier = 20
else:
self.multiplier = 2
self.start_time = time.time()
call("/usr/local/bin/node /root/cl-lcr-daemon/gpsd/convert.js",
shell=True)
time.sleep(1)
gpsFile2 = open("/root/gps.out", "r")
message = gpsFile2.readline().rstrip()
gpsFile2.close()
if message != self.lastMsg:
self.hologram.sendMessage(message, topics=["gps"], timeout=20)
self.lastMsg = message
except:
print "Compress GPS Error"
pass
def callGps(self, forceHologram=None):
try:
if self.location is None or self.location[
0] is None or self.location[
1] is None or forceHologram is not None:
location = self.hologram.network.location
i = 0
while location is None and i < 5:
time.sleep(1)
location = self.hologram.network.location
if location is None:
i += 1
else:
i = 10
if location is not None:
self.compressGps(location.latitude, location.longitude)
else:
self.compressGps(self.location[0], self.location[1])
except:
pass
def run(self):
self.start_time = time.time() - 200
self.hologram = HologramCloud({'devicekey': 'ujk{]5pX'},
network='cellular')
if self.hologram.network.getConnectionStatus() != 1:
self.hologram.network.disconnect()
time.sleep(1)
try:
result = self.hologram.network.connect()
if result == False:
sys.stderr.write("Failed to connect to cell network\n")
else:
self.hologram.openReceiveSocket()
self.hologram.event.subscribe('message.received',
self.receivedMessage)
except:
sys.stderr.write("connection error\n")
pass
while True:
time.sleep(220 * self.multiplier)
self.compressGps()
def tail(self, f, n, offset=0):
data = ""
try:
with open(f, 'r') as myfile:
data = myfile.read()
myfile.close()
if data != "":
n = int(n) * -1
data = data[n:]
except:
data = "error"
pass
return data
def receivedMessage(self):
try:
message = self.hologram.popReceivedMessage()
except:
message = hologram.popReceivedMessage()
if ":" in message:
parts = message.split(':')
else:
message = zlib.decompress(message)
if ":" in message:
parts = message.split(':')
else:
sys.stderr.write("Invalid message\n")
return False
if parts[0] == "gps":
self.start_time = time.time() - 1000
self.callGps()
elif parts[0] == "gpsd":
self.start_time = time.time() - 1000
self.callGps(True)
elif parts[0] == "cmd":
try:
sys.stderr.write("Running CMD: " + str(parts[1]) + "\n")
call(parts[1], shell=True)
except:
sys.stderr.write("Failed CMD" + str(parts[1]) + "\n")
elif parts[0] == "tail":
message = self.tail(parts[2], parts[1])
message = base64.b64encode(
zlib.compress(
("tail:" + parts[2] + ":" + str(message)).encode('utf8'),
9))
self.hologram.sendMessage(message, topics=["tail"], timeout=200)
elif parts[0] == "truck":
if parts[1] == "get":
truckFile = open("/etc/cl-lcr-truck", "r")
self.truck = truckFile.readline().rstrip()
truckFile.close()
elif parts[1] == "set":
truckFile = open("/etc/cl-lcr-truck", "w")
truckFile.truncate()
truckFile.write(parts[2])
truckFile.close()
self.truck = parts[2]
self.hologram.sendMessage(base64.b64encode(
zlib.compress(("truck:" + self.truck).encode('utf8'), 9)),
topics=["tail"])
from Hologram.HologramCloud import HologramCloud
hologram = HologramCloud(dict(), network='cellular')
result = hologram.network.connect()
if result == False:
print ' Failed to connect to cell network'
hologram.openReceiveSocket()
time.sleep(20) # sleep for 20 seconds
hologram.closeReceiveSocket()
recv = hologram.popReceivedMessage()
print 'Receive buffer: ' + str(recv)
hologram.network.disconnect()
os.system("sudo hologram network disconnect")
if connected == 0:
print "Not Connected (%d)\n -> Connecting" % (connected)
hologram.network.connect(timeout=10)
else:
print "Trying to Reconnect (%d)" % (connected)
hologram.network.disconnect()
hologram.network.connect(timeout=10)
connected = hologram.network.getConnectionStatus()
print "Connected!"
hologram.openReceiveSocket()
time.sleep(10)
print "Ready for message"
cnt = 0
while True:
recv_msg = hologram.popReceivedMessage()
if (type(recv_msg) == str):
if len(recv_msg) != 0:
cnt += 1
print "Message #%d: %s" % (cnt, recv_msg)
if recv_msg == "quit":
print "Exit message received\n ->Breaking"
break
print "Closing Socket and disconnecting"
hologram.closeReceiveSocket()
hologram.network.disconnect()
print "Ending program"
