starlink-grpc-tools/dishHistoryInflux.py
sparky8512 2e71acbbdb Changes to work better with Docker containers
Handle SIGTERM to enable graceful script shutdown when a container is stopped. This currently only matters for the InfluxDB scripts, and only when they run in a loop, since if the script is hard-terminated, it won't flush out any queued data points to the InfluxDB server. This also required changing the entrypoint script to exec python instead of running it as a child process of the shell running entrypoint.sh, since Docker will only deliver SIGTERM to the parent process it started directly.

Also, add -t 30 to the default Docker command to match the script default behavior prior to the changes in 46f65a6214
2021-01-16 10:17:32 -08:00

256 lines
8.3 KiB
Python

#!/usr/bin/python3
######################################################################
#
# Write Starlink user terminal packet loss statistics to an InfluxDB
# database.
#
# This script examines the most recent samples from the history data,
# computes several different metrics related to packet loss, and
# writes those to the specified InfluxDB database.
#
######################################################################
import getopt
import datetime
import logging
import os
import signal
import sys
import time
import warnings
from influxdb import InfluxDBClient
import starlink_grpc
class Terminated(Exception):
pass
def handle_sigterm(signum, frame):
# Turn SIGTERM into an exception so main loop can clean up
raise Terminated()
def main():
arg_error = False
try:
opts, args = getopt.getopt(sys.argv[1:], "ahn:p:rs:t:vC:D:IP:R:SU:")
except getopt.GetoptError as err:
print(str(err))
arg_error = True
# Default to 1 hour worth of data samples.
samples_default = 3600
samples = None
print_usage = False
verbose = False
default_loop_time = 0
loop_time = default_loop_time
run_lengths = False
host_default = "localhost"
database_default = "starlinkstats"
icargs = {"host": host_default, "timeout": 5, "database": database_default}
rp = None
flush_limit = 6
# For each of these check they are both set and not empty string
influxdb_host = os.environ.get("INFLUXDB_HOST")
if influxdb_host:
icargs["host"] = influxdb_host
influxdb_port = os.environ.get("INFLUXDB_PORT")
if influxdb_port:
icargs["port"] = int(influxdb_port)
influxdb_user = os.environ.get("INFLUXDB_USER")
if influxdb_user:
icargs["username"] = influxdb_user
influxdb_pwd = os.environ.get("INFLUXDB_PWD")
if influxdb_pwd:
icargs["password"] = influxdb_pwd
influxdb_db = os.environ.get("INFLUXDB_DB")
if influxdb_db:
icargs["database"] = influxdb_db
influxdb_rp = os.environ.get("INFLUXDB_RP")
if influxdb_rp:
rp = influxdb_rp
influxdb_ssl = os.environ.get("INFLUXDB_SSL")
if influxdb_ssl:
icargs["ssl"] = True
if influxdb_ssl.lower() == "secure":
icargs["verify_ssl"] = True
elif influxdb_ssl.lower() == "insecure":
icargs["verify_ssl"] = False
else:
icargs["verify_ssl"] = influxdb_ssl
if not arg_error:
if len(args) > 0:
arg_error = True
else:
for opt, arg in opts:
if opt == "-a":
samples = -1
elif opt == "-h":
print_usage = True
elif opt == "-n":
icargs["host"] = arg
elif opt == "-p":
icargs["port"] = int(arg)
elif opt == "-r":
run_lengths = True
elif opt == "-s":
samples = int(arg)
elif opt == "-t":
loop_time = float(arg)
elif opt == "-v":
verbose = True
elif opt == "-C":
icargs["ssl"] = True
icargs["verify_ssl"] = arg
elif opt == "-D":
icargs["database"] = arg
elif opt == "-I":
icargs["ssl"] = True
icargs["verify_ssl"] = False
elif opt == "-P":
icargs["password"] = arg
elif opt == "-R":
rp = arg
elif opt == "-S":
icargs["ssl"] = True
icargs["verify_ssl"] = True
elif opt == "-U":
icargs["username"] = arg
if "password" in icargs and "username" not in icargs:
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(" -a: Parse all valid samples")
print(" -h: Be helpful")
print(" -n <name>: Hostname of InfluxDB server, default: " + host_default)
print(" -p <num>: Port number to use on InfluxDB server")
print(" -r: Include ping drop run length stats")
print(" -s <num>: Number of data samples to parse, default: loop interval,")
print(" if set, else " + str(samples_default))
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 server")
print(" -D <name>: Database name to use, default: " + database_default)
print(" -I: Enable SSL/TLS but disable certificate verification (INSECURE!)")
print(" -P <word>: Set password for authentication")
print(" -R <name>: Retention policy name to use")
print(" -S: Enable SSL/TLS using default CA cert")
print(" -U <name>: Set username for authentication")
sys.exit(1 if arg_error else 0)
if samples is None:
samples = int(loop_time) if loop_time > 0 else samples_default
logging.basicConfig(format="%(levelname)s: %(message)s")
class GlobalState:
pass
gstate = GlobalState()
gstate.dish_id = None
gstate.points = []
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:
print(msg % args)
else:
logging.error(msg, *args)
def flush_points(client):
try:
client.write_points(gstate.points, retention_policy=rp)
if verbose:
print("Data points written: " + str(len(gstate.points)))
gstate.points.clear()
except Exception as e:
conn_error("Failed writing to InfluxDB database: %s", str(e))
return 1
return 0
def loop_body(client):
if gstate.dish_id is None:
try:
gstate.dish_id = starlink_grpc.get_id()
if verbose:
print("Using dish ID: " + gstate.dish_id)
except starlink_grpc.GrpcError as e:
conn_error("Failure getting dish ID: %s", str(e))
return 1
timestamp = datetime.datetime.utcnow()
try:
g_stats, pd_stats, rl_stats = starlink_grpc.history_ping_stats(samples, verbose)
except starlink_grpc.GrpcError as e:
conn_error("Failure getting ping stats: %s", str(e))
return 1
all_stats = g_stats.copy()
all_stats.update(pd_stats)
if run_lengths:
for k, v in rl_stats.items():
if k.startswith("run_"):
for i, subv in enumerate(v, start=1):
all_stats[k + "_" + str(i)] = subv
else:
all_stats[k] = v
gstate.points.append({
"measurement": "spacex.starlink.user_terminal.ping_stats",
"tags": {
"id": gstate.dish_id
},
"time": timestamp,
"fields": all_stats,
})
if verbose:
print("Data points queued: " + str(len(gstate.points)))
if len(gstate.points) >= flush_limit:
return flush_points(client)
return 0
if "verify_ssl" in icargs and not icargs["verify_ssl"]:
# user has explicitly said be insecure, so don't warn about it
warnings.filterwarnings("ignore", message="Unverified HTTPS request")
signal.signal(signal.SIGTERM, handle_sigterm)
influx_client = InfluxDBClient(**icargs)
try:
next_loop = time.monotonic()
while True:
rc = loop_body(influx_client)
if loop_time > 0:
now = time.monotonic()
next_loop = max(next_loop + loop_time, now)
time.sleep(next_loop - now)
else:
break
except Terminated:
pass
finally:
if gstate.points:
rc = flush_points(influx_client)
influx_client.close()
sys.exit(rc)
if __name__ == '__main__':
main()