premiere-libtorrent/tools/parse_lookup_log.py

#!/usr/bin/env python
# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4

# this is meant to parse the dht_lookups.log generated by parse_dht_log.py
from __future__ import print_function

import os

nodes = {}


def get_origin(n):
    if n in nodes:
        return list(nodes[n]['conns'])
    else:
        return ['0.0.0.0']


def calculate_pos(nid, dist):
    nid = int(nid[0:7], 16)

    x = 0
    y = 0
    for i in range(0, 28, 2):
        x |= (nid & (1 << i)) >> (i / 2)
        y |= (nid & (2 << i)) >> (i / 2 + 1)

# print '%d -> %d %d' % (dist, x, y)

    return (x / 3, y / 3)


def plot_nodes(nodes, frame):

    try:
        os.mkdir('dht_frames')
    except Exception:
        pass

    out = open('dht_frames/plot-%02d.dot' % frame, 'w+')
    edges = set()
    print('graph swarm {', file=out)
# print >>out, '"tl" [shape=point pos="0,0!"];'
# print >>out, '"tr" [shape=point pos="1638,0!"];'
# print >>out, '"ll" [shape=point pos="1638,1638!"];'
# print >>out, '"tr" [shape=point pos="0,1638!"];'
    for dst, n in list(nodes.items()):
        shape = 'point'
        if 's' in n:
            shape = n['s']

        print('"%s" [shape=%s fillcolor="%s" label="" pos="%d,%d!"];' %
              (dst, shape, n['c'], n['p'][0], n['p'][1]), file=out)
        for e in n['conns']:
            if (e, dst) in edges:
                continue

            # only add an edge once to the .dot file
            edges.add((e, dst))
            edges.add((dst, e))

            style = 'solid'
            col = 'gray'
            if nodes[dst]['c'] != 'white' and nodes[e]['c'] != 'white':
                style = 'solid'
                col = 'black'
            print('"%s" -- "%s" [style="%s" color="%s"];' % (e, dst, style, col), file=out)

    print('}', file=out)
    out.close()
    os.system('neato -n dht_frames/plot-%02d.dot -Tpng -o dht_frames/frame-%02d.png' % (frame, frame))


frame = 0
next_render_time = 100
f = open('dht_lookups.txt')
for line in f:
    if line.startswith('***'):
        break

    kind = line[0:3].strip()
    line = line[3:].strip().split(' ')

    if kind == '===':
        continue

    t = int(line[0])
    if t > next_render_time:
        plot_nodes(nodes, frame)
        frame += 1
        next_render_time += 100
        # sys.exit(0)

    if kind == '<>':
        p = calculate_pos(line[1], 0)
        dst = '0.0.0.0'
        if dst not in nodes:
            nodes[dst] = {'conns': set(), 'p': p, 'c': 'blue', 's': 'circle'}

        p = calculate_pos(line[2], 25)
        dst = '255.255.255.255'
        if dst not in nodes:
            nodes[dst] = {'conns': set(), 'p': p, 'c': 'yellow', 's': 'circle'}
    elif kind == '->':
        dst = line[3]

        if dst not in nodes:
            src = get_origin(dst)
            p = calculate_pos(line[2], int(line[1]))
            nodes[dst] = {'conns': set(src), 'p': p, 'c': 'grey'}
        nodes[dst]['c'] = 'grey'

    elif kind == '+':
        dst = line[3]
        src = line[4]
        p = calculate_pos(line[2], int(line[1]))
        if dst not in nodes:
            nodes[dst] = {'conns': set(), 'p': p, 'c': 'white'}
        nodes[dst]['conns'].add(src)

    elif kind == '<-':
        dst = line[3]
        nodes[dst]['c'] = 'green'
    elif kind == 'x':
        dst = line[3]
        nodes[dst]['c'] = 'orange'
    elif kind == 'X':
        dst = line[3]
        nodes[dst]['c'] = 'red'

f.close()