source: fedd/deter/topdl_to_route.py @ a80a4a7

#!/usr/local/bin/python

import topdl
import StringIO

def topology_to_route_file(top, filename=None, file=None):
    # Outfile will point to the output target, either a file or a string buffer
    outf = None
    closeit = True
    if all([filename, file]): return False
    elif file: 
        closeit = False
        outf = file
    elif filename: outf = open(filename, 'w')
    else: outf = StringIO.StringIO()

    for e in top.elements:
        if not isinstance(e, topdl.Computer): continue
        myips = set()
        mylinks = { }
        for inf in e.interface:
            ip = inf.get_attribute('ip4_address')
            if ip: myips.add(ip)
            for sub in inf.subs:
                for oinf in sub.interfaces:
                    dip = oinf.get_attribute('ip4_address')
                    if dip is not None and dip not in myips:
                        if ip not in mylinks: mylinks[ip] = []
                        mylinks[ip].append(dip)
        print >>outf, '%s: %s' % (e.name, ','.join(myips))
        for ip, links in mylinks.items():
            print >>outf, '%s: %s' % (ip, ','.join(links))
    outf.flush()
    # If this routine built a string, return it
    if isinstance(outf, StringIO.StringIO): rv = outf.getvalue()
    else: rv = True
    if closeit: outf.close()
    return rv