mirror of
https://github.com/checktheroads/hyperglass
synced 2024-05-11 05:55:08 +00:00
82 lines
2.5 KiB
Python
82 lines
2.5 KiB
Python
# flake8: noqa
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# WORK IN PROGRESS
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"""Linux-style parsers for ping & traceroute."""
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# Standard Library
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import re
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# Project
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from hyperglass.exceptions import ParsingError
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def _process_numbers(numbers):
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"""Convert string to float or int."""
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for num in numbers:
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num = float(num)
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if num.is_integer():
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num = int(num)
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yield num
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def parse_linux_ping(output):
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"""Parse standard Linux-style ping output to structured data.
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Example:
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64 bytes from 1.1.1.1: icmp_seq=0 ttl=59 time=1.151 ms
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64 bytes from 1.1.1.1: icmp_seq=1 ttl=59 time=1.180 ms
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64 bytes from 1.1.1.1: icmp_seq=2 ttl=59 time=1.170 ms
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64 bytes from 1.1.1.1: icmp_seq=3 ttl=59 time=1.338 ms
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64 bytes from 1.1.1.1: icmp_seq=4 ttl=59 time=4.913 ms
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--- 1.1.1.1 ping statistics ---
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5 packets transmitted, 5 packets received, 0% packet loss
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round-trip min/avg/max/stddev = 1.151/1.950/4.913/1.483 ms
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"""
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try:
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# Extract target host
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host = re.findall(r"^PING (.+) \(.+\): \d+ data bytes", output)[0]
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# Separate echo replies from summary info
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replies, _stats = re.split(r"--- .+ ---", output)
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replies = [l for l in replies.splitlines()[1:] if l]
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reply_stats = []
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for line in replies:
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# Extract the numerical values from each echo reply line
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bytes_seq_ttl_rtt = re.findall(
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r"(\d+) bytes.+ icmp_seq=(\d+) ttl=(\d+) time=(\d+\.\d+).*", line
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)[0]
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_bytes, seq, ttl, rtt = _process_numbers(bytes_seq_ttl_rtt)
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reply_stats.append(
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{"bytes": _bytes, "sequence": seq, "ttl": ttl, "rtt": rtt}
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)
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stats = [l for l in _stats.splitlines() if l]
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# Extract the top summary line numbers & process
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tx_rx_loss = re.findall(r"(\d+) .+, (\d+) .+, (\d+)\%.+", stats[0])[0]
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tx, rx, loss = _process_numbers(tx_rx_loss)
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# Extract the bottom summary line numbers & process
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rt = stats[1].split(" = ")[1]
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min_max_avg = rt.split("/")[:-1]
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_min, _max, _avg = _process_numbers(min_max_avg)
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return {
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"host": host,
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"transmitted": tx,
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"received": rx,
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"loss_percent": loss,
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"min_rtt": _min,
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"max_rtt": _max,
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"avg_rtt": _avg,
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"replies": reply_stats,
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}
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except (KeyError, ValueError) as err:
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# KeyError for empty findalls, ValueError for regex errors
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raise ParsingError("Error parsing ping response: {e}", e=str(err))
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