babeld.py

# babeld service for babeld v1.9.1

'''
babeld.py: babeld router model
'''

import os
import logging

from core.service import CoreService, addservice
from core.misc.utils import *
from core.constants import *

class BabeldService(CoreService):
    _name = "Babel"
    _group = "Routing"
    _depends = ()
    _dirs = ("/var/log/babeld",
            "/usr/local/etc/babeld",
            "/var/run/babeld")
    _configs = ()
    _startindex = 35
    _shutdown = ("killall babeld", )
    _validate = ("pidof babeld", )

    @classmethod
    def generateconfig(cls,  node, filename, services):
        return ""

class babeld(BabeldService):
    _name = "Babeld"
    _configs = ("babeld.sh",)
    _startup = ("sh babeld.sh",)
    _custom_needed = False

    @classmethod
    def generateconfig(cls, node, filename, services):
        ''' Use a startup script for launching Babeld Service 
    '''
        if filename == cls._configs[0]:
            return cls.generatebabeldsh(node, services)
        else:
            raise ValueError

    @classmethod
    def generatebabeldsh(cls, node, services):
        cfg = """#!/bin/bash
# auto-generated by Babeld service (babeld.py)
### insert babeld.conf commands here
cat <<EOF >>/usr/local/etc/babeld/babeld.conf
debug 1
daemonise true
link-detect false
diversity false
EOF

### specific commands go into babeld.conf above
# to redistribute babel routes to kernel: redistribute metric 256
# to redistribute a specific subnetwork: redistribute ip 10.0.4.0/24
# https://www.irif.fr/~jch/software/babel/babeld.html#Global_options
# https://www.irif.fr/~jch/software/babel/babeld.html#Interface_configuration
# interface eth1 type wireless rxcost 256 hello-interval 5
# 

BABELD=/usr/local/bin/babeld
HELLO_INTERVAL_WIRED=4
HELLO_INTERVAL_WIRELESS=10
TELNET_PORT=33123
$BABELD \\
    -h $HELLO_INTERVAL_WIRELESS \\
    -H $HELLO_INTERVAL_WIRED \\
    -S /var/run/babeld/babel-state \\
    -c /usr/local/etc/babeld/babeld.conf \\
    -L /var/log/babeld/babeld.log \\
    -I /var/run/babeld/babeld.pid \\
    -g $TELNET_PORT \\
"""
        for ifc in node.netifs():
            cfg += "    %s " % (ifc.name)
        return cfg
addservice(babeld)