1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
#!/usr/bin/python
# -*- coding: utf8 -*-
from BackwardsReader import BackwardsReader
import sys,json
#supernodes= [ "kaah","supernode","euer","pa_sharepoint","oxberg" ]
try:
import socket
from time import time
import os
host = os.environ.get("GRAPHITE_HOST","localhost")
port = 2003
g_path = os.environ.get("GRAPHITE_PATH","retiolum")
begin = time()
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sys.stderr.write("connecting to %s:%d"%(host,port))
s.connect((host,port))
except Exception as e:
print >>sys.stderr, "Cannot connect to graphite: " + str(e)
""" TODO: Refactoring needed to pull the edges out of the node structures again,
it should be easier to handle both structures"""
DUMP_FILE = "/krebs/db/availability"
def write_digraph(nodes):
"""
writes the complete digraph in dot format
"""
print ('digraph retiolum {')
#print (' graph [center rankdir=LR packMode="clust"]')
print (' graph [center packMode="clust"]')
print (' node[shape=circle,style=filled,fillcolor=grey]')
print (' overlap=false')
generate_stats(nodes)
merge_edges(nodes)
nodes = anon_nodes(nodes)
for k,v in nodes.iteritems():
write_node(k,v)
write_stat_node(nodes)
print ('}')
def anon_nodes(nodes):
i = "0"
newnodes = {}
for k,v in nodes.iteritems():
for nodek,node in nodes.iteritems():
for to in node['to']:
if to['name'] == k:
to['name'] = i
newnodes[i] = v
i = str(int(i)+1)
return newnodes
def write_stat_node(nodes):
''' Write a `stats` node in the corner
This node contains infos about the current number of active nodes and connections inside the network
'''
num_conns = 0
num_nodes = len(nodes)
for k,v in nodes.iteritems():
num_conns+= len(v['to'])
node_text = " stats_node [shape=box,label=\"Statistics\\l"
node_text += "Active Nodes: %s\\l" % num_nodes
node_text += "Connections : %s\\l" % num_conns
node_text += "\""
node_text += ",fillcolor=green"
node_text += "]"
print(node_text)
def generate_stats(nodes):
""" Generates some statistics of the network and nodes
"""
for k,v in nodes.iteritems():
conns = v.get('to',[])
for c in conns: #sanitize weights
if float(c['weight']) > 9000: c['weight'] = str(9001)
elif float(c['weight']) < 0: c['weight'] = str(0)
v['num_conns'] = len(conns)
v['avg_weight'] = get_node_avg_weight(conns)
def get_node_avg_weight(conns):
""" calculates the average weight for the given connections """
if not conns:
sys.syderr.write("get_node_avg_weight: connection parameter empty")
return 9001
else:
return sum([float(c['weight']) for c in conns])/len(conns)
def delete_unused_nodes(nodes):
new_nodes = {}
for k,v in nodes.iteritems():
if v['external-ip'] == "(null)":
continue
if v.get('to',[]):
new_nodes[k] = v
for k,v in new_nodes.iteritems():
if not [ i for i in v['to'] if i['name'] in new_nodes]:
#del(new_nodes[k])
del(k)
return new_nodes
def merge_edges(nodes):
""" merge back and forth edges into one
DESTRUCTS the current structure by deleting "connections" in the nodes
"""
for k,v in nodes.iteritems():
for con in v.get('to',[]):
for i,secon in enumerate(nodes.get(con['name'],{}).get('to',[])):
if k == secon['name']:
del (nodes[con['name']]['to'][i])
con['bidirectional'] = True
def write_node(k,v):
""" writes a single node and its edges
edges are weightet with the informations inside the nodes provided by
tinc
"""
node = " "+k #+"[label=\""
#node += k+"\\l"
#node += "avg weight: %.2f\\l" % v['avg_weight']
#if v.has_key('num_conns'):
# node += "Conns:"+str(v['num_conns'])+"\\l"
#node +="\""
#node +=",group=\""+v['external-ip'].replace(".","") + "\""
#node += "]"
print node
for con in v.get('to',[]):
label = con['weight']
w = int(con['weight'])
weight = str(1000 - (((w - 150) * (1000 - 0)) / (1000 -150 )) + 0)
length = str(float(w)/1500)
#weight = "1000" #str(300/float(con['weight']))
#weight = str((100/float(con['weight'])))
#weight = str(-1 * (200-100000/int(con['weight'])))
if float(weight) < 0 :
weight= "1"
#sys.stderr.write(weight + ":"+ length +" %s -> " %k + str(con) + "\n")
edge = " "+k+ " -> " +con['name'] + " [label="+label + " weight="+weight #+ " minlen="+length
if con.get('bidirectional',False):
edge += ",dir=both"
edge += "]"
print edge
def decode_input(FILE):
return json.load(FILE)
nodes = decode_input(sys.stdin)
nodes = delete_unused_nodes(nodes)
write_digraph(nodes)
try:
end = time()
msg = '%s.graph.anon_build_time %d %d\r\n' % (g_path,((end-begin)*1000),end)
s.send(msg)
s.close()
except Exception as e: print >>sys.stderr, e
|
