def read(log, log_level, conf=None, config=None):
'''
Parse a configuration, file or dictionary, and return an overlay object.
'''
# If specified, read the overlay configuration file.
if conf:
config = util.config(conf)
elif config:
config = copy.deepcopy(config)
else:
raise NoOverlayConfigError()
# Get the overlay configuration.
section = config["overlay"]
# Fetch just enough configuration to start an overlay logger.
name = util.name_get(section["name"])
lg = logger.create(log, log_level, "l3overlay", name)
lg.start()
# Global overlay configuration.
enabled = util.boolean_get(section["enabled"]) if "enabled" in section else True
asn = util.integer_get(section["asn"], minval=0, maxval=65535)
linknet_pool = util.ip_network_get(section["linknet-pool"])
fwbuilder_script_file = section["fwbuilder-script"] if "fwbuilder-script" in section else None
# Generate the list of nodes, sorted numerically.
nodes = []
for key, value in section.items():
if key.startswith("node-"):
node = util.list_get(value, length=2, pattern="\\s")
nodes.append((util.name_get(node[0]), util.ip_address_get(node[1])))
if not nodes:
raise NoNodeListError(name)
# Get the node object for this node from the list of nodes.
this_node = next((n for n in nodes if n[0] == util.name_get(section["this-node"])), None)
if not this_node:
raise MissingThisNodeError(name, util.name_get(section["this-node"]))
# Static interfaces.
interfaces = []
for s, c in config.items():
if s.startswith("static"):
interfaces.append(interface.read(lg, s, c))
elif s == "DEFAULT" or s == "overlay":
continue
else:
raise UnsupportedSectionTypeError(name, s)
# Return overlay object.
return Overlay(lg, name,
enabled, asn, linknet_pool, fwbuilder_script_file, nodes, this_node, interfaces)
def read(logger, name, config):
'''
Create a static vlan from the given configuration object.
'''
id = util.integer_get(config["id"], minval=0, maxval=4096)
physical_interface = util.name_get(config["physical-interface"])
address = util.ip_address_get(config["address"])
netmask = util.netmask_get(config["netmask"], util.ip_address_is_v6(address))
return VLAN(logger, name,
id, physical_interface, address, netmask)
def read(logger, name, config):
'''
Create a static overlay link from the given configuration object.
'''
outer_address = util.ip_address_get(config["outer-address"])
inner_address = util.ip_address_get(config["inner-address"])
inner_overlay_name = util.name_get(config["inner-overlay-name"])
netmask = util.netmask_get(config["netmask"], util.ip_address_is_v6(inner_address))
if (type(inner_address) != type(outer_address)):
raise ReadError("inner address '%s' (%s) and outer address '%s' (%s) must be the same type of IP address" %
(inner_address, str(type(nner_address)),
outer_address, str(type(outer_address))))
return OverlayLink(logger, name,
outer_address, inner_address, inner_overlay_name, netmask)
