Merge pull request #40 from DeanCording/main
Starlink-MQTT Systemd support
This commit is contained in:
commit
b61f5a4789
2 changed files with 54 additions and 3 deletions
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@ -15,9 +15,12 @@ Where *id_value* is the *id* value from the dish status information.
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"""
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import logging
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import os
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import signal
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import sys
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import time
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import json
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import math
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try:
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@ -32,6 +35,14 @@ import dish_common
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HOST_DEFAULT = "localhost"
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class Terminated(Exception):
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pass
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def handle_sigterm(signum, frame):
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# Turn SIGTERM into an exception so main loop can clean up
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raise Terminated
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def parse_args():
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parser = dish_common.create_arg_parser(output_description="publish it to a MQTT broker",
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@ -72,6 +83,29 @@ def parse_args():
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else:
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parser.epilog += "\nSSL support options not available due to missing ssl module"
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env_map = (
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("MQTT_HOST", "hostname"),
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("MQTT_PORT", "port"),
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("MQTT_USERNAME", "username"),
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("MQTT_PASSWORD", "password"),
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("MQTT_SSL", "tls"),
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)
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env_defaults = {}
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for var, opt in env_map:
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# check both set and not empty string
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val = os.environ.get(var)
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if val:
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if var == "MQTT_SSL":
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if val == "insecure":
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env_defaults[opt] = False
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elif val == "secure":
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env_defaults[opt] = True
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else:
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env_defaults["ssl_ca_cert"] = val
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else:
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env_defaults[opt] = val
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parser.set_defaults(**env_defaults)
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opts = dish_common.run_arg_parser(parser, need_id=True)
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if opts.username is None and opts.password is not None:
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@ -102,7 +136,9 @@ def loop_body(opts, gstate):
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if not "dish_{0}".format(category) in data:
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data["dish_{0}".format(category)] = {}
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data["dish_{0}".format(category)].update({key: val})
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# Skip NaN values that occur on startup because they can upset Javascript JSON parsers
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if not ((type(val) == float) and math.isnan(val)):
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data["dish_{0}".format(category)].update({key: val})
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def cb_add_sequence(key, val, category, _):
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@ -145,6 +181,8 @@ def main():
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gstate = dish_common.GlobalState(target=opts.target)
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signal.signal(signal.SIGTERM, handle_sigterm)
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try:
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next_loop = time.monotonic()
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while True:
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@ -155,10 +193,11 @@ def main():
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time.sleep(next_loop - now)
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else:
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break
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except Terminated:
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pass
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finally:
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gstate.shutdown()
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sys.exit(rc)
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sys.exit(rc)
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if __name__ == '__main__':
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12
systemd/starlink-mqtt.service
Normal file
12
systemd/starlink-mqtt.service
Normal file
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@ -0,0 +1,12 @@
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[Unit]
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Description=Starlink GRPC to MQTT exporter
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After=network.target
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[Service]
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Type=simple
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WorkingDirectory=/opt/starlink-grpc-tools/
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Environment=MQTT_HOST=localhost MQTT_PORT=1883 MQTT_USERNAME=<changeme> MQTT_PASSWORD=<changeme> MQTT_SSL=false
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ExecStart=/opt/starlink-grpc-tools/venv/bin/python3 dish_grpc_mqtt.py -t 10 status alert_detail
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[Install]
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WantedBy=multi-user.target
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