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#!/usr/bin/python
from .BackwardsReader import BackwardsReader
import sys,json,os
from .Supernodes import check_all_the_super
from .Services import add_services
from .Availability import get_node_availability
import sys,json
from time import time
DUMP_FILE = os.environ.get("AVAILABILITY_FILE", "tinc-availability.json")
hostpath=os.environ.get("TINC_HOSTPATH", "/etc/tinc/retiolum/hosts")
# will be filled later
supernodes= []
def resolve_myself(nodes):
#resolve MYSELF to the real ip
for k,v in nodes.items():
if v["external-ip"] == "MYSELF":
for nodek,node in nodes.items():
for to in node['to']:
if to['name'] == k:
v["external-ip"] = to["addr"]
return nodes
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 generate_availability_stats(nodes):
""" generates stats of from availability
"""
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 as e: sys.stderr.write(str(e))
for k,v in nodes.items():
# TODO: get this information in a different way
v['availability'] = get_node_availability(k,[])
def generate_stats(nodes):
""" Generates some statistics of the network and nodes
"""
for k,v in nodes.items():
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):
""" Deletes all the nodes which are currently not connected to the network"""
new_nodes = {}
for k,v in nodes.items():
if v['external-ip'] == "(null)":
continue
if v.get('to',[]):
new_nodes[k] = v
for k,v in new_nodes.items():
if not [ i for i in v['to'] if i['name'] in new_nodes]:
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.items():
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 print_head():
print ('digraph retiolum {')
print (' graph [center=true packMode="clust"]')
print (' node[shape=box,style=filled,fillcolor=grey]')
print (' overlap=false')
def print_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
for k,v in nodes.items():
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 print_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=<<TABLE border='0' title='%s' cellborder='1' >" %k
node += "<TR><TD colspan='2'><B>%s</B></TD></TR>"%k
if 'availability' in v:
node += "<TR><TD>availability:</TD><TD>%f</TD></TR>" % v['availability']
if 'num_conns' in v:
node += "<TR><TD>Num Connects:</TD><TD>%s</TD></TR>"%str(v['num_conns'])
node += "<TR><TD>external:</TD><TD>"+v['external-ip']+":"+v['external-port']+"</TD></TR>"
for addr in v.get('internal-ip',['dunno lol']):
node += "<TR><TD>internal:</TD><TD>%s</TD></TR>"%addr
if 'services' in v:
node +="<TR><TD colspan='2'><B>Services:</B></TD></TR>"
for service in v['services']:
try:uri,comment = service.split(" ",1)
except:
uri = service
comment =""
node +="<TR >"
uri_proto=uri.split(":")[0]
uri_rest = uri.split(":")[1]
if not uri_rest:
node +="<TD title='{0}' align='left' colspan='2' \
href='{0}'><font color='darkred'>{0}</font>".format(uri)
else:
node +="<TD title='{0}' align='left' colspan='2' \
href='{0}'><U>{0}</U>".format(uri)
if comment:
node += "<br align='left'/> <I>{0}</I>".format(comment)
node +="</TD></TR>"
# end label
node +="</TABLE>>"
if v['num_conns'] == 1:
node += ",fillcolor=red"
elif k in supernodes:
node += ",fillcolor=steelblue1"
node += "]"
print(node)
def print_anonymous_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=\""
print(node)
def print_edge(k,v):
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)
if float(weight) < 0 :
weight= "1"
edge = " "+k+ " -> " +con['name'] + " [label="+label + " weight="+weight
if con.get('bidirectional',False):
edge += ",dir=both"
edge += "]"
print(edge)
def anonymize_nodes(nodes):
#anonymizes all nodes
i = "0"
newnodes = {}
for k,v in nodes.items():
for nodek,node in nodes.items():
for to in node['to']:
if to['name'] == k:
to['name'] = i
newnodes[i] = v
i = str(int(i)+1)
return newnodes
def main():
if len(sys.argv) != 2 or sys.argv[1] not in ["anonymous","complete"]:
print("usage: %s (anonymous|complete)")
sys.exit(1)
nodes = json.load(sys.stdin)
nodes = delete_unused_nodes(nodes)
print_head()
generate_stats(nodes)
merge_edges(nodes)
if sys.argv[1] == "anonymous":
nodes = anonymize_nodes(nodes)
for k,v in nodes.items():
print_anonymous_node(k,v)
print_edge(k,v)
elif sys.argv[1] == "complete":
try:
for supernode,addr in check_all_the_super(hostpath):
supernodes.append(supernode)
except FileNotFoundError as e:
print("!! cannot load list of supernodes ({})".format(hostpath))
print("!! Use TINC_HOSTPATH env to override")
sys.exit(1)
generate_availability_stats(nodes)
add_services(nodes)
for k,v in nodes.items():
print_node(k,v)
print_edge(k,v)
#TODO: get availability somehow else
# try:
# dump_graph(nodes)
# except Exception as e:
# sys.stderr.write("Cannot dump graph: %s" % str(e))
else:
pass
print_stat_node(nodes)
print ('}')
if __name__ == "__main__":
main()
# vim: set sw=2:ts=2
|
