Created
May 7, 2020 10:27
-
-
Save mildsunrise/eb86199c10f010c9eed8b78c881d7b37 to your computer and use it in GitHub Desktop.
Script to extract statistics about MySQL queries in a .pcap.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/usr/bin/env python3 | |
''' | |
Script to extract statistics about MySQL queries in a .pcap. | |
''' | |
import sys | |
from subprocess import run | |
import json, csv, re | |
args = sys.argv[1:] | |
if len(args) != 2: | |
print('Usage: script.py <mysql_packets.pcap> [time|size]', file=sys.stderr) | |
exit(2) | |
fname, sort = args | |
keys = { | |
'time': lambda q: q['response_end'], | |
'size': lambda q: q['transferred_size'], | |
} | |
if sort not in keys: | |
print('Invalid sort key.', file=sys.stderr) | |
exit(2) | |
fields = [ 'frame.time_relative', 'tcp.srcport', 'mysql.packet_length', 'mysql.query' ] | |
data = run([ 'tshark', '-r', fname, '-Tjson', *('-e' + f for f in fields) ], \ | |
check=True, text=True, capture_output=True) | |
packets = json.loads(data.stdout) | |
def get_unique(x): | |
assert len(x) == 1 | |
return x[0] | |
def parse_packet(x): | |
x = x['_source']['layers'] | |
r = {} | |
r['time'] = float(get_unique(x['frame.time_relative'])) | |
r['is_server'] = int(get_unique(x['tcp.srcport'])) == 3306 | |
if 'mysql.packet_length' in x: r['packet_lengths'] = list(map(int, x['mysql.packet_length'])) | |
if 'mysql.query' in x: r['query'] = get_unique(x['mysql.query']) | |
return r | |
packets = [parse_packet(x) for x in packets] | |
packets = [x for x in packets if 'packet_lengths' in x] | |
queries = [] | |
while packets: | |
query = packets.pop(0) | |
assert not query['is_server'] | |
response_frames = [] | |
while packets and packets[0]['is_server']: | |
response_frames.append(packets.pop(0)) | |
assert len(response_frames) > 0 | |
size = sum(x for packet in response_frames for x in packet['packet_lengths']) | |
queries.append({ | |
'query': query['query'], | |
'transferred_size': size, | |
'start': query['time'], | |
'response_start': response_frames[0]['time'] - query['time'], | |
'response_end': response_frames[-1]['time'] - query['time'], | |
}) | |
for q in sorted(queries, key=keys[sort]): | |
print('{:7d} {:4.1f}ms {}'.format( q['transferred_size'], q['response_end']*1e3, | |
re.sub(r'\s+', ' ', q['query'][:100].strip()) + ('...' if len(q['query']) > 100 else '') )) | |
print('\n{} queries, {:.1f}ms response time, {:.0f}kb transferred'.format( \ | |
len(queries), sum(q['response_end'] for q in queries) * 1e3, sum(q['transferred_size'] for q in queries) / 1024 )) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
thanks :)