46f65a6214
Add an interval timing loop for all the grpc scripts that did not already have one. Organized some of the code into functions in order to facilitate this, which caused some problems with local variables vs global ones, so moved the script code into a proper main() function. Which didn't really solve the access to globals issue, so also moved the mutable state into a class instance. The interval timer should be relatively robust against time drift due to the loop function running time and/or OS scheduler delay, but is far from perfect. Retry logic is now in place for both InfluxDB scripts. Retry for dishStatusInflux.py is slightly changed in that a failed write to InfluxDB server will be retried on every interval, rather than waiting for another batch full of data points to write, but this only happens once there is at least a full batch (currently 6) of data points pending. This new behavior matches how the autocommit functionality on SeriesHelper works. Changed the default behavior of dishStatusInflux.py to not loop, in order to match the other scripts. To get the old behavior, add a '-t 30' option to the command line. Closes #9
243 lines
8 KiB
Python
243 lines
8 KiB
Python
#!/usr/bin/python3
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######################################################################
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#
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# Write Starlink user terminal packet loss statistics to an InfluxDB
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# database.
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#
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# This script examines the most recent samples from the history data,
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# computes several different metrics related to packet loss, and
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# writes those to the specified InfluxDB database.
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#
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######################################################################
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import getopt
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import datetime
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import logging
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import os
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import sys
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import time
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import warnings
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from influxdb import InfluxDBClient
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import starlink_grpc
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def main():
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arg_error = False
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try:
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opts, args = getopt.getopt(sys.argv[1:], "ahn:p:rs:t:vC:D:IP:R:SU:")
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except getopt.GetoptError as err:
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print(str(err))
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arg_error = True
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# Default to 1 hour worth of data samples.
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samples_default = 3600
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samples = None
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print_usage = False
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verbose = False
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default_loop_time = 0
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loop_time = default_loop_time
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run_lengths = False
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host_default = "localhost"
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database_default = "starlinkstats"
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icargs = {"host": host_default, "timeout": 5, "database": database_default}
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rp = None
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flush_limit = 6
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# For each of these check they are both set and not empty string
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influxdb_host = os.environ.get("INFLUXDB_HOST")
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if influxdb_host:
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icargs["host"] = influxdb_host
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influxdb_port = os.environ.get("INFLUXDB_PORT")
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if influxdb_port:
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icargs["port"] = int(influxdb_port)
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influxdb_user = os.environ.get("INFLUXDB_USER")
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if influxdb_user:
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icargs["username"] = influxdb_user
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influxdb_pwd = os.environ.get("INFLUXDB_PWD")
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if influxdb_pwd:
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icargs["password"] = influxdb_pwd
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influxdb_db = os.environ.get("INFLUXDB_DB")
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if influxdb_db:
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icargs["database"] = influxdb_db
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influxdb_rp = os.environ.get("INFLUXDB_RP")
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if influxdb_rp:
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rp = influxdb_rp
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influxdb_ssl = os.environ.get("INFLUXDB_SSL")
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if influxdb_ssl:
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icargs["ssl"] = True
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if influxdb_ssl.lower() == "secure":
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icargs["verify_ssl"] = True
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elif influxdb_ssl.lower() == "insecure":
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icargs["verify_ssl"] = False
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else:
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icargs["verify_ssl"] = influxdb_ssl
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if not arg_error:
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if len(args) > 0:
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arg_error = True
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else:
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for opt, arg in opts:
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if opt == "-a":
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samples = -1
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elif opt == "-h":
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print_usage = True
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elif opt == "-n":
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icargs["host"] = arg
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elif opt == "-p":
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icargs["port"] = int(arg)
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elif opt == "-r":
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run_lengths = True
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elif opt == "-s":
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samples = int(arg)
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elif opt == "-t":
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loop_time = float(arg)
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elif opt == "-v":
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verbose = True
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elif opt == "-C":
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icargs["ssl"] = True
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icargs["verify_ssl"] = arg
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elif opt == "-D":
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icargs["database"] = arg
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elif opt == "-I":
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icargs["ssl"] = True
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icargs["verify_ssl"] = False
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elif opt == "-P":
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icargs["password"] = arg
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elif opt == "-R":
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rp = arg
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elif opt == "-S":
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icargs["ssl"] = True
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icargs["verify_ssl"] = True
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elif opt == "-U":
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icargs["username"] = arg
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if "password" in icargs and "username" not in icargs:
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print("Password authentication requires username to be set")
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arg_error = True
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if print_usage or arg_error:
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print("Usage: " + sys.argv[0] + " [options...]")
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print("Options:")
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print(" -a: Parse all valid samples")
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print(" -h: Be helpful")
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print(" -n <name>: Hostname of InfluxDB server, default: " + host_default)
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print(" -p <num>: Port number to use on InfluxDB server")
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print(" -r: Include ping drop run length stats")
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print(" -s <num>: Number of data samples to parse, default: loop interval,")
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print(" if set, else " + str(samples_default))
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print(" -t <num>: Loop interval in seconds or 0 for no loop, default: " +
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str(default_loop_time))
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print(" -v: Be verbose")
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print(" -C <filename>: Enable SSL/TLS using specified CA cert to verify server")
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print(" -D <name>: Database name to use, default: " + database_default)
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print(" -I: Enable SSL/TLS but disable certificate verification (INSECURE!)")
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print(" -P <word>: Set password for authentication")
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print(" -R <name>: Retention policy name to use")
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print(" -S: Enable SSL/TLS using default CA cert")
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print(" -U <name>: Set username for authentication")
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sys.exit(1 if arg_error else 0)
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if samples is None:
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samples = int(loop_time) if loop_time > 0 else samples_default
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logging.basicConfig(format="%(levelname)s: %(message)s")
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class GlobalState:
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pass
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gstate = GlobalState()
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gstate.dish_id = None
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gstate.points = []
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def conn_error(msg):
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# Connection errors that happen in an interval loop are not critical
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# failures, but are interesting enough to print in non-verbose mode.
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if loop_time > 0:
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print(msg)
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else:
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logging.error(msg)
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def flush_points(client):
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try:
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client.write_points(gstate.points, retention_policy=rp)
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if verbose:
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print("Data points written: " + str(len(gstate.points)))
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gstate.points.clear()
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except Exception as e:
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conn_error("Failed writing to InfluxDB database: " + str(e))
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return 1
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return 0
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def loop_body(client):
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if gstate.dish_id is None:
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try:
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gstate.dish_id = starlink_grpc.get_id()
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if verbose:
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print("Using dish ID: " + gstate.dish_id)
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except starlink_grpc.GrpcError as e:
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conn_error("Failure getting dish ID: " + str(e))
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return 1
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timestamp = datetime.datetime.utcnow()
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try:
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g_stats, pd_stats, rl_stats = starlink_grpc.history_ping_stats(samples, verbose)
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except starlink_grpc.GrpcError as e:
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conn_error("Failure getting ping stats: " + str(e))
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return 1
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all_stats = g_stats.copy()
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all_stats.update(pd_stats)
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if run_lengths:
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for k, v in rl_stats.items():
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if k.startswith("run_"):
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for i, subv in enumerate(v, start=1):
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all_stats[k + "_" + str(i)] = subv
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else:
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all_stats[k] = v
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gstate.points.append({
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"measurement": "spacex.starlink.user_terminal.ping_stats",
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"tags": {
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"id": gstate.dish_id
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},
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"time": timestamp,
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"fields": all_stats,
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})
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if verbose:
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print("Data points queued: " + str(len(gstate.points)))
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if len(gstate.points) >= flush_limit:
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return flush_points(client)
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return 0
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if "verify_ssl" in icargs and not icargs["verify_ssl"]:
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# user has explicitly said be insecure, so don't warn about it
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warnings.filterwarnings("ignore", message="Unverified HTTPS request")
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influx_client = InfluxDBClient(**icargs)
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try:
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next_loop = time.monotonic()
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while True:
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rc = loop_body(influx_client)
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if loop_time > 0:
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now = time.monotonic()
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next_loop = max(next_loop + loop_time, now)
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time.sleep(next_loop - now)
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else:
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break
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finally:
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if gstate.points:
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rc = flush_points(influx_client)
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influx_client.close()
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sys.exit(rc)
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if __name__ == '__main__':
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main()
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