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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""Python code to start a RIPE Atlas UDM (User-Defined
Measurement). This one is to test NTP (time) servers.
You'll need an API key in ~/.atlas/auth.
After launching the measurement, it downloads the results and
analyzes. By default, it displays only version, mode and stratum, but
you can request a full display.
Stéphane Bortzmeyer <stephane+frama@bortzmeyer.org>
"""
import json
import time
import os
import string
import sys
import time
import socket
import collections
import copy
import Blaeu
from Blaeu import Host_Type
config = Blaeu.Config()
# Default values
config.only_stratum = False
config.display_all = False
class Set():
def __init__(self):
self.total = 0
def usage(msg=None):
print("Usage: %s target-name-or-IP" % sys.argv[0], file=sys.stderr)
config.usage(msg)
print("""Also:
--only-stratum : displays only the stratum
--display-all : displays all the details""",
file=sys.stderr)
def specificParse(config, option, value):
result = True
if option == "--only-stratum":
config.only_stratum = True
elif option == "--display-all":
config.display_all = True
else:
result = False
return result
(args, data) = config.parse("", ["only-stratum", "display-all"],
specificParse, usage)
if config.only_stratum and config.display_all:
usage("--only-stratum and --display-all are not compatible")
sys.exit(1)
if len(args) != 1:
usage("Not the good number of arguments")
sys.exit(1)
target = args[0]
if config.measurement_id is None:
data["definitions"][0]["target"] = target
data["definitions"][0]["type"] = "ntp"
data["definitions"][0]["description"] = "NTP measurement of %s" % target
target_type = Blaeu.host_type(target)
if target_type == Host_Type.IPv6:
config.ipv4 = False
af = 6
if config.include is not None:
data["probes"][0]["tags"]["include"] = copy.copy(config.include)
data["probes"][0]["tags"]["include"].append("system-ipv6-works")
else:
data["probes"][0]["tags"]["include"] = ["system-ipv6-works",]
elif target_type == Host_Type.IPv4:
config.ipv4 = True
af = 4
if config.include is not None:
data["probes"][0]["tags"]["include"] = copy.copy(config.include)
data["probes"][0]["tags"]["include"].append("system-ipv4-works")
else:
data["probes"][0]["tags"]["include"] = ["system-ipv4-works",]
else:
# Hostname
if config.ipv4:
af = 4
else:
af = 6
data["definitions"][0]['af'] = af
if config.verbose:
print(data)
try:
measurement = Blaeu.Measurement(data)
except Blaeu.RequestSubmissionError as error:
print(Blaeu.format_error(error), file=sys.stderr)
sys.exit(1)
if config.verbose:
print("Measurement #%s to %s uses %i probes" % (measurement.id, target,
measurement.num_probes))
rdata = measurement.results(wait=True, percentage_required=config.percentage_required)
else:
measurement = Blaeu.Measurement(data=None, id=config.measurement_id)
rdata = measurement.results(wait=False)
sets = collections.defaultdict(Set)
if config.display_probe_asns:
config.display_probes = True
if config.display_probes:
probes_sets = collections.defaultdict(Set)
print(("%s probes reported" % len(rdata)))
min_offset = 0
max_offset = sys.float_info.max
total_offset = 0
min_rtt = 0
max_rtt = sys.float_info.max
total_rtt = 0
successes = 0
# Documentation at https://atlas.ripe.net/docs/apis/result-format/#version-5000
for result in rdata:
if config.display_probes:
probe_id = result["prb_id"]
if config.display_probe_asns:
details = Blaeu.ProbeCache.cache_probe_id(config.cache_probes, probe_id) \
if config.cache_probes else Blaeu.Probe(probe_id)
asn = getattr(details, "asn_v%i" % (4 if config.ipv4 else 6), None)
if 'stratum' in result:
offset = 0
num = 0
for m in result['result']:
if 'offset' in m:
successes += 1
total_offset += float(m['offset'])
total_rtt += float(m['rtt'])
if config.only_stratum:
value = "Stratum %s" % result['stratum']
elif config.display_all:
value = "Version %s, Mode %s, Stratum %s, Precision %s s, Root delay %s s, Root dispersion %s s" % \
(result['version'], result['mode'], result['stratum'], result['precision'], \
result['root-delay'], result['root-dispersion'])
else:
value = "Version %s, Mode %s, Stratum %s" % (result['version'], result['mode'], result['stratum'])
else:
if 'err' in result:
error = result['err']
elif 'alert' in result:
error = result['alert']
else:
error = "UNKNOWN ERROR (timeout?)"
value = "FAILED TO GET A RESULT: %s" % error
sets[value].total += 1
if config.display_probes:
if config.display_probe_asns:
info = [probe_id, asn]
else:
info = probe_id
if value in probes_sets:
probes_sets[value].append(info)
else:
probes_sets[value] = [info,]
sets_data = sorted(sets, key=lambda s: sets[s].total, reverse=False)
for myset in sets_data:
detail = ""
if config.display_probes:
detail = "(probes %s)" % probes_sets[myset]
print("[%s] : %i occurrences %s" % (myset, sets[myset].total, detail))
if successes > 0:
means = "Mean time offset: %.6f s, mean RTT: %6f s" % \
(total_offset/successes, total_rtt/successes)
else:
means = ""
print("Test #%s done at %s. %s" % \
(measurement.id,
time.strftime("%Y-%m-%dT%H:%M:%SZ", time.gmtime()), means))
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