def __init__(self, name, ip_string, ip_range, port):
"""
:param name: the name of this data source
:param ip_string: the ip address at which it can be found - a dotted
decimal STRING
:param ip_range: the consecutive number of IPs over which it is spread
:param port: the port to which it is sent
:return:
"""
self.name = name
self.ip_address = IpAddress(ip_string)
self.ip_range = ip_range
self.port = port
class DataSource(object):
"""
A data source from an IP. Holds all the information we need to use
that data source.
"""
def __init__(self, name, ip_string, ip_range, port):
"""
:param name: the name of this data source
:param ip_string: the ip address at which it can be found - a dotted
decimal STRING
:param ip_range: the consecutive number of IPs over which it is spread
:param port: the port to which it is sent
:return:
"""
self.name = name
self.ip_address = IpAddress(ip_string)
self.ip_range = ip_range
self.port = port
@classmethod
def from_mcast_string(cls, mcast_string):
try:
_bits = mcast_string.split(':')
port = int(_bits[1])
address, number = _bits[0].split('+')
number = int(number) + 1
assert(len(address.split('.')) == 4)
except ValueError:
raise RuntimeError('The address %s is not correctly formed. Expect '
'1.2.3.4+50:7777. Bailing.', mcast_string)
return cls('<unnamed>', address, number, port)
def is_multicast(self):
"""
Does the data source's IP address begin with 239?
:return:
"""
return self.ip_address.is_multicast()
def __repr__(self):
return self.__str__()
def __str__(self):
return 'DataSource(%s) @ %s+%i port(%i)' % (
self.name, self.ip_address, self.ip_range-1, self.port)
