Digi Connect IT 4 - Page 628

Applications Develop Python applications
Digi Connect IT® 4 User Guide
628
with open('/etc/config/dhcp.leases', 'r') as f:
for line in f:
elems = line.split()
if len(elems) != 5:
continue
leases.append({"mac": elems[1], "ip": elems[2], "host": elems
[3]})
if leases:
client.publish(PREFIX_EVENT + "/leases", json.dumps(leases,
separators=(',',':')))
except:
print("Failed to open DHCP leases file")
def publish_system():
avg1, avg5, avg15 = runt.get("system.load_avg").split(', ')
ram_used = runt.get("system.ram.per")
disk_opt = runt.get("system.disk./opt.per")
disk_config = runt.get("system.disk./etc/config.per")
msg = json.dumps({
"load_avg": {
"1min": avg1,
"5min": avg5,
"15min": avg15
},
"disk_usage": {
"/opt": disk_opt,
"/etc/config:": disk_config,
"ram": ram_used
}
})
client.publish(PREFIX_EVENT + "/system", json.dumps(msg))
runt.start()
serial = runt.get("system.serial")
PREFIX = "router/" + serial
PREFIX_EVENT = "event/" + PREFIX
PREFIX_CMD = "cmd/" + PREFIX
PREFIX_RSP = "rsp/" + PREFIX
client = mqtt.Client()
client.on_connect = on_connect
client.on_message = on_message
try:
client.connect("192.168.1.100", 1883, 60)
client.loop_start()
except:
print("Failed to connect to MQTT server")
sys.exit(1)
while True:
publish_dhcp_leases()
publish_system()
time.sleep(POLL_TIME)