def handle(self, method, packet, mac, client_ip):
"""
Processes a dynamic request, returning a synthesised lease, if possible.
`method`, `packet`, `mac`, and `client_ip` are all passed through from
`handleUnknownMAC()` directly.
The value returned is either a Definition or None, depending on success.
"""
mac = str(mac)
self._logger.info("Dynamic %(method)s from %(mac)s%(ip)s in pool '%(name)s'" % {
'method': method,
'mac': mac,
'ip': client_ip and (' for %(ip)s' % {'ip': client_ip,}) or '',
'name': self._hostname_prefix,
})
if method == 'DISCOVER' or method.startswith('REQUEST:'):
definition = self._allocate(mac, client_ip)
if definition and self._discourage_renewals:
target_time = int(definition.lease_time * 0.975)
self._logger.debug("Setting T1 and T2 to 97.5%% of lease-time=%(lease)i: %(target)i seconds" % {
'lease': definition.lease_time,
'target': target_time,
})
packet.setOption('renewal_time_value', longToList(target_time))
packet.setOption('rebinding_time_value', longToList(target_time))
return definition
if method == 'RELEASE' or method == 'DECLINE':
return self._reclaim(mac, client_ip)
if method == 'INFORM':
return self._inform(client_ip)
self._logger.info("%(method)s is unknown to the dynamic provisioning engine" % {
'method': method,
})
return None
