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#!/usr/bin/python
from BackwardsReader import BackwardsReader
import os
import re
import sys
import json
TINC_NETWORK = os.environ.get("TINC_NETWORK","retiolum")
os.environ["LOG_FILE"]
SYSLOG_FILE = os.environ.get("LOG_FILE","/var/log/everything.log")
# Tags and Delimiters
TINC_TAG="tinc.%s" % TINC_NETWORK
BEGIN_NODES = "Nodes:"
END_NODES = "End of nodes."
BEGIN_SUBNET = "Subnet list:"
END_SUBNET = "End of subnet list"
BEGIN_EDGES = "Edges:"
END_EDGES = "End of edges."
def get_tinc_block(log_file):
""" returns an iterateable block from the given log file (syslog) """
tinc_block = []
in_block = False
bf = BackwardsReader(log_file)
BOL = re.compile(".*tinc.retiolum\[[0-9]+\]: ")
while True:
line = bf.readline()
if not line:
raise Exception("end of file at log file? This should not happen!")
line = BOL.sub('',line).strip()
if END_SUBNET in line:
in_block = True
if not in_block:
continue
tinc_block.append(line)
if BEGIN_NODES in line:
break
return reversed(tinc_block)
def parse_input(log_data):
nodes={}
for line in log_data:
if BEGIN_NODES in line :
nodes={}
for line in log_data:
if END_NODES in line :
break
l = line.replace('\n','').split() #TODO unhack me
nodes[l[0]]= { 'external-ip': l[2], 'external-port' : l[4] }
if BEGIN_SUBNET in line :
for line in log_data:
if END_SUBNET in line :
break
l = line.replace('\n','').split()
if not nodes[l[2]].get('internal-ip',False):
nodes[l[2]]['internal-ip'] = []
nodes[l[2]]['internal-ip'].append(l[0].split('#')[0])
if BEGIN_EDGES in line :
edges = {}
for line in log_data:
if END_EDGES in line :
break
l = line.replace('\n','').split()
if not nodes[l[0]].has_key('to') :
nodes[l[0]]['to'] = []
nodes[l[0]]['to'].append(
{'name':l[2],'addr':l[4],'port':l[6],'weight' : l[10] })
return nodes
if __name__ == '__main__':
import subprocess,time
subprocess.call(["pkill","-SIGUSR2", "tincd"])
time.sleep(1)
print json.dumps(parse_input((get_tinc_block(SYSLOG_FILE))))
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