starlink-grpc-tools/dishStatusMqtt.py

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#!/usr/bin/python3
######################################################################
#
# Publish Starlink user terminal status info to a MQTT broker.
#
# This script pulls the current status and publishes it to the
# specified MQTT broker either once or in a periodic loop.
#
######################################################################
import getopt
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import logging
import sys
import time
try:
import ssl
ssl_ok = True
except ImportError:
ssl_ok = False
import grpc
import paho.mqtt.publish
import spacex.api.device.device_pb2
import spacex.api.device.device_pb2_grpc
def main():
arg_error = False
try:
opts, args = getopt.getopt(sys.argv[1:], "hn:p:t:vC:ISP:U:")
except getopt.GetoptError as err:
print(str(err))
arg_error = True
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print_usage = False
verbose = False
default_loop_time = 0
loop_time = default_loop_time
host_default = "localhost"
mqargs = {"hostname": host_default}
username = None
password = None
if not arg_error:
if len(args) > 0:
arg_error = True
else:
for opt, arg in opts:
if opt == "-h":
print_usage = True
elif opt == "-n":
mqargs["hostname"] = arg
elif opt == "-p":
mqargs["port"] = int(arg)
elif opt == "-t":
loop_time = float(arg)
elif opt == "-v":
verbose = True
elif opt == "-C":
mqargs["tls"] = {"ca_certs": arg}
elif opt == "-I":
if ssl_ok:
mqargs["tls"] = {"cert_reqs": ssl.CERT_NONE}
else:
print("No SSL support found")
sys.exit(1)
elif opt == "-P":
password = arg
elif opt == "-S":
mqargs["tls"] = {}
elif opt == "-U":
username = arg
if username is None and password is not None:
print("Password authentication requires username to be set")
arg_error = True
if print_usage or arg_error:
print("Usage: " + sys.argv[0] + " [options...]")
print("Options:")
print(" -h: Be helpful")
print(" -n <name>: Hostname of MQTT broker, default: " + host_default)
print(" -p <num>: Port number to use on MQTT broker")
print(" -t <num>: Loop interval in seconds or 0 for no loop, default: " +
str(default_loop_time))
print(" -v: Be verbose")
print(" -C <filename>: Enable SSL/TLS using specified CA cert to verify broker")
print(" -I: Enable SSL/TLS but disable certificate verification (INSECURE!)")
print(" -P: Set password for username/password authentication")
print(" -S: Enable SSL/TLS using default CA cert")
print(" -U: Set username for authentication")
sys.exit(1 if arg_error else 0)
if username is not None:
mqargs["auth"] = {"username": username}
if password is not None:
mqargs["auth"]["password"] = password
logging.basicConfig(format="%(levelname)s: %(message)s")
class GlobalState:
pass
gstate = GlobalState()
gstate.dish_id = None
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def conn_error(msg, *args):
# Connection errors that happen in an interval loop are not critical
# failures, but are interesting enough to print in non-verbose mode.
if loop_time > 0:
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print(msg % args)
else:
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logging.error(msg, *args)
def loop_body():
try:
with grpc.insecure_channel("192.168.100.1:9200") as channel:
stub = spacex.api.device.device_pb2_grpc.DeviceStub(channel)
response = stub.Handle(spacex.api.device.device_pb2.Request(get_status={}))
status = response.dish_get_status
# More alerts may be added in future, so rather than list them individually,
# build a bit field based on field numbers of the DishAlerts message.
alert_bits = 0
for alert in status.alerts.ListFields():
alert_bits |= (1 if alert[1] else 0) << (alert[0].number - 1)
gstate.dish_id = status.device_info.id
topic_prefix = "starlink/dish_status/" + gstate.dish_id + "/"
msgs = [
(topic_prefix + "hardware_version", status.device_info.hardware_version, 0, False),
(topic_prefix + "software_version", status.device_info.software_version, 0, False),
(topic_prefix + "state", spacex.api.device.dish_pb2.DishState.Name(status.state), 0, False),
(topic_prefix + "uptime", status.device_state.uptime_s, 0, False),
(topic_prefix + "snr", status.snr, 0, False),
(topic_prefix + "seconds_to_first_nonempty_slot", status.seconds_to_first_nonempty_slot, 0, False),
(topic_prefix + "pop_ping_drop_rate", status.pop_ping_drop_rate, 0, False),
(topic_prefix + "downlink_throughput_bps", status.downlink_throughput_bps, 0, False),
(topic_prefix + "uplink_throughput_bps", status.uplink_throughput_bps, 0, False),
(topic_prefix + "pop_ping_latency_ms", status.pop_ping_latency_ms, 0, False),
(topic_prefix + "alerts", alert_bits, 0, False),
(topic_prefix + "fraction_obstructed", status.obstruction_stats.fraction_obstructed, 0, False),
(topic_prefix + "currently_obstructed", status.obstruction_stats.currently_obstructed, 0, False),
# While the field name for this one implies it covers 24 hours, the
# empirical evidence suggests it only covers 12 hours. It also resets
# on dish reboot, so may not cover that whole period. Rather than try
# to convey that complexity in the topic label, just be a bit vague:
(topic_prefix + "seconds_obstructed", status.obstruction_stats.last_24h_obstructed_s, 0, False),
(topic_prefix + "wedges_fraction_obstructed", ",".join(str(x) for x in status.obstruction_stats.wedge_abs_fraction_obstructed), 0, False),
]
except grpc.RpcError:
if gstate.dish_id is None:
conn_error("Dish unreachable and ID unknown, so not recording state")
return 1
if verbose:
print("Dish unreachable")
topic_prefix = "starlink/dish_status/" + gstate.dish_id + "/"
msgs = [(topic_prefix + "state", "DISH_UNREACHABLE", 0, False)]
try:
paho.mqtt.publish.multiple(msgs, client_id=gstate.dish_id, **mqargs)
if verbose:
print("Successfully published to MQTT broker")
except Exception as e:
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conn_error("Failed publishing to MQTT broker: %s", str(e))
return 1
return 0
next_loop = time.monotonic()
while True:
rc = loop_body()
if loop_time > 0:
now = time.monotonic()
next_loop = max(next_loop + loop_time, now)
time.sleep(next_loop - now)
else:
break
sys.exit(rc)
if __name__ == '__main__':
main()