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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
#!/usr/bin/python
# -*- coding: utf8 -*-
from BackwardsReader import BackwardsReader
import sys,json
from find_super import check_all_the_super
try:
from time import time
import socket
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:
sys.stderr.write("Cannot connect to graphite: %s\n" % str(e))
supernodes= [ ]
for supernode,addr in check_all_the_super():
supernodes.append(supernode)
""" 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=box,style=filled,fillcolor=grey]')
print (' overlap=false')
generate_stats(nodes)
merge_edges(nodes)
write_stat_node(nodes)
for k,v in nodes.iteritems():
write_node(k,v)
print ('}')
def dump_graph(nodes):
from time import time
graph = {}
graph['nodes'] = nodes
graph['timestamp'] = time()
f = open(DUMP_FILE,'a')
json.dump(graph,f)
f.write('\n')
f.close()
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
'''
from time import localtime,strftime
num_conns = 0
num_nodes = len(nodes)
try:
msg = '%s.num_nodes %d %d\r\n' %(g_path,num_nodes,begin)
s.send(msg)
except Exception as e: pass
#except: pass
for k,v in nodes.iteritems():
num_conns+= len(v['to'])
node_text = " stats_node [label=\"Statistics\\l"
node_text += "Build Date : %s\\l" % strftime("%Y-%m-%d %H:%M:%S",localtime())
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
"""
jlines = []
try:
f = BackwardsReader(DUMP_FILE)
lines_to_use = 1000
while True:
if lines_to_use == 0: break
line = f.readline()
if not line: break
jline = json.loads(line)
if not jline['nodes']: continue
jlines.append(jline)
lines_to_use -=1
except Exception,e: sys.stderr.write(str(e))
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)
v['availability'] = get_node_availability(k,jlines)
sys.stderr.write( "%s -> %f\n" %(k ,v['availability']))
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 get_node_availability(name,jlines):
""" calculates the node availability by reading the generated dump file
adding together the uptime of the node and returning the time
parms:
name - node name
jlines - list of already parsed dictionaries node archive
"""
begin = last = current = 0
uptime = 0
#sys.stderr.write ( "Getting Node availability of %s\n" % name)
for stat in jlines:
if not stat['nodes']:
continue
ts = stat['timestamp']
if not begin:
begin = last = ts
current = ts
if stat['nodes'].get(name,{}).get('to',[]):
uptime += current - last
else:
pass
#sys.stderr.write("%s offline at timestamp %f\n" %(name,current))
last = ts
all_the_time = last - begin
try:
return uptime/ all_the_time
except:
return 1
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 += "availability: %f\\l" % v['availability']
#node += "avg weight: %.2f\\l" % v['avg_weight']
if v.has_key('num_conns'):
node += "Num Connects:"+str(v['num_conns'])+"\\l"
node += "external:"+v['external-ip']+":"+v['external-port']+"\\l"
for addr in v.get('internal-ip',['dunno lol']): #['¯\\\\(°_o)/¯']):
node += "internal:%s\\l"%addr
node +="\""
# warning if node only has one connection
if v['num_conns'] == 1:
node += ",fillcolor=red"
elif k in supernodes:
node += ",fillcolor=steelblue1"
#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)
try:
dump_graph(nodes)
except Exception,e:
sys.stderr.write("Cannot dump graph: %s" % str(e))
write_digraph(nodes)
try:
end = time()
msg = '%s.graph.detail_build_time %d %d\r\n' % (g_path,((end-begin)*1000),end)
s.send(msg)
sys.stderr.write(msg)
s.close()
except Exception as e: sys.stderr.write( str(e) + "\n")
|