def check_and_expire(ip, ipm_list):
''' given an IP address and a list of IPMeta objects for that IP, expire all info in db that is not up to date '''
print "%s %s" % (ip, len(ipm_list))
if len(ipm_list) > 1:
### pick one, rest should have been invalidated anyways
for ipm in ipm_list[1:]:
ipm.invalidated = datetime.now(pytz.utc)
ipm.last_updated = datetime.now(pytz.utc)
ipm.save()
ipm = ipm_list[0] # this is the chosen ipmeta object to validate against
now_dnshost = None
now_dnsloc = None
now_dnshost = do_dns_host_lookup(ip)
if now_dnshost != None:
now_dnsloc = do_dns_loc_lookup(now_dnshost)
if ipm.hostname != now_dnshost or ipm.dnsloc != now_dnsloc:
# invalidate old and create new
ipm.invalidated = datetime.now(pytz.utc)
ipm.last_updated = datetime.now(pytz.utc)
ipm.save()
# clone didn't work ( https://docs.djangoproject.com/en/1.7/topics/db/queries/#copying-model-instances )
# so doing a new object for now
print "creating new! for %s/%s" % (ipm.ip, ipm.hostname)
ipm_new = IPMeta(ip=ipm.ip)
ipm_new.save(
) ## this will do another DNS lookup (which should be in cache anyways)
else: #save the last time this info was checked
ipm.last_updated = datetime.now(pytz.utc)
ipm.save()
def create_ipmeta( ip_addr ): ## not used?
dnshost = do_dns_host_lookup( ip_addr )
if dnshost:
dnsloc = do_dns_loc_lookup( dnshost )
ipm=IPMeta( ##HERE
ip=ip_addr,
hostname=dnshost,
dnsloc=dnsloc
)
ipm.save()
