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added support for distributed EMANE 0.9.2

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(Boeing r1884)
This commit is contained in:
ahrenholz 2014-09-29 19:07:25 +00:00
parent f081985433
commit 5359ff4fd4
3 changed files with 73 additions and 17 deletions
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63
daemon/core/emane/emane.py
View file

@ -107,16 +107,21 @@ class Emane(ConfigurableManager):
v = self.EMANE092
return v, result.strip()
def initeventservice(self, filename=None):
''' (Re-)initialize the EMANE Event service. The multicast group and/or
port may be configured, and can be changed via XML config file and an
environment variable pointing to that file.
def initeventservice(self, filename=None, shutdown=False):
''' (Re-)initialize the EMANE Event service.
The multicast group and/or port may be configured.
- For versions < 0.9.1 this can be changed via XML config file
and an environment variable pointing to that file.
- For version >= 0.9.1 this is passed into the EventService
constructor.
'''
if hasattr(self, 'service'):
del self.service
self.service = None
# EMANE 0.9.1+ does not require event service XML config
if self.version >= self.EMANE091:
if shutdown:
return
values = self.getconfig(None, "emane",
self.emane_config.getdefaultvalues())[1]
group, port = self.emane_config.valueof('eventservicegroup',
@ -129,8 +134,13 @@ class Emane(ConfigurableManager):
dev = self.emane_config.valueof('eventservicedevice', values)
# disabled otachannel for event service
# only needed for e.g. antennaprofile events xmit by models
try:
self.service = EventService(eventchannel=(group, int(port), dev),
otachannel=None)
except Exception, e:
msg = "Error instantiating EMANE event service: %s" % e
self.session.exception(coreapi.CORE_EXCP_LEVEL_ERROR,
"Emane.initeventservice()", None, msg)
return True
if filename is not None:
tmp = os.getenv(self.EVENTCFGVAR)
@ -246,6 +256,13 @@ class Emane(ConfigurableManager):
self.addobj(obj)
if len(self._objs) == 0:
return Emane.NOT_NEEDED
# control network bridge required for EMANE 0.9.2
# - needs to be configured before checkdistributed() for distributed
# - needs to exist when eventservice binds to it (initeventservice)
if self.version > self.EMANE091 and self.session.master:
ctrlnet = self.session.addremovectrlnet(remove=False,
conf_reqd=False)
self.distributedctrlnet(ctrlnet)
if self.checkdistributed():
# we are slave, but haven't received a platformid yet
cfgval = self.getconfig(None, self.emane_config._name,
@ -427,12 +444,44 @@ class Emane(ConfigurableManager):
# assume self._objslock is already held here
if self.verbose:
self.info("Emane.buildxml2()")
# control network bridge needs to exist when eventservice binds to it
# on master, control network bridge added earlier in startup()
ctrlnet = self.session.addremovectrlnet(remove=False, conf_reqd=False)
self.buildplatformxml2(ctrlnet)
self.buildnemxml()
self.buildeventservicexml()
def distributedctrlnet(self, ctrlnet):
''' Distributed EMANE requires multiple control network prefixes to
be configured. This generates configuration for slave control nets
using the default list of prefixes.
'''
session = self.session
if not session.master:
return # slave server
servers = session.broker.getserverlist()
if len(servers) < 2:
return # not distributed
prefix = session.cfg.get('controlnet')
prefix = getattr(session.options, 'controlnet', prefix)
prefixes = prefix.split()
if len(prefixes) >= len(servers):
return # normal Config messaging will distribute controlnets
# this generates a config message having controlnet prefix assignments
self.info("Setting up default controlnet prefixes for distributed " \
"(%d configured)" % len(prefixes))
prefixes = ctrlnet.DEFAULT_PREFIX
vals = "controlnet='%s'" % prefixes
tlvdata = ""
tlvdata += coreapi.CoreConfTlv.pack(coreapi.CORE_TLV_CONF_OBJ,
"session")
tlvdata += coreapi.CoreConfTlv.pack(coreapi.CORE_TLV_CONF_TYPE, 0)
tlvdata += coreapi.CoreConfTlv.pack(coreapi.CORE_TLV_CONF_VALUES, vals)
rawmsg = coreapi.CoreConfMessage.pack(0, tlvdata)
msghdr = rawmsg[:coreapi.CoreMessage.hdrsiz]
msg = coreapi.CoreConfMessage(flags=0, hdr=msghdr,
data=rawmsg[coreapi.CoreMessage.hdrsiz:])
self.session.broker.handlemsg(msg)
def xmldoc(self, doctype):
''' Returns an XML xml.minidom.Document with a DOCTYPE tag set to the
provided doctype string, and an initial element having the same
@ -876,7 +925,7 @@ class Emane(ConfigurableManager):
# instantiation was previously delayed by self.setup()
# returning Emane.NOT_READY
h = None
with session._handlerslock:
with self.session._handlerslock:
for h in self.session._handlers:
break
self.session.instantiate(handler=h)
@ -920,7 +969,7 @@ class Emane(ConfigurableManager):
if self.service is not None:
self.service.breakloop()
# reset the service, otherwise nextEvent won't work
self.initeventservice()
self.initeventservice(shutdown=True)
if self.eventmonthread is not None:
if self.version >= self.EMANE091:
self.eventmonthread._Thread__stop()

2
daemon/core/netns/nodes.py
View file

@ -20,7 +20,7 @@ from core.coreobj import PyCoreNode
class CtrlNet(LxBrNet):
policy = "ACCEPT"
CTRLIF_IDX_BASE = 99 # base control interface index
DEFAULT_PREFIX = "172.16.0.0/24"
DEFAULT_PREFIX = "172.16.0.0/24 172.16.1.0/24 172.16.2.0/24 172.16.3.0/24 172.16.4.0/24"
def __init__(self, session, objid = "ctrlnet", name = None,
verbose = False, netid = 1, prefix = None,

19
daemon/core/session.py
View file

@ -658,12 +658,14 @@ class Session(object):
''' Check if we have entered the shutdown state, when no running nodes
and links remain.
'''
with self._objslock:
nc = len(self._objs)
nc = self.getnodecount()
# TODO: this doesn't consider slave server node counts
# wait for slave servers to enter SHUTDOWN state, then master session
# can enter SHUTDOWN
replies = ()
if self.getcfgitembool('verbose', False):
self.info("Session %d shutdown: %d nodes remaining" % \
(self.sessionid, nc))
if nc == 0:
replies = self.setstate(state=coreapi.CORE_EVENT_SHUTDOWN_STATE,
info=True, sendevent=True, returnevent=True)
@ -743,8 +745,7 @@ class Session(object):
bridge to be added even if one has not been configured.
'''
prefix = self.cfg.get('controlnet')
if hasattr(self.options, 'controlnet'):
prefix = self.options.controlnet
prefix = getattr(self.options, 'controlnet', prefix)
if not prefix:
if conf_reqd:
return None # no controlnet needed
@ -790,7 +791,11 @@ class Session(object):
servers.remove('localhost')
prefix = None
for server_prefix in prefixes:
try:
server, p = server_prefix.split(':')
except ValueError:
server = ""
p = None
if server == servers[0]:
prefix = p
break
@ -799,8 +804,11 @@ class Session(object):
servers[0]
self.exception(coreapi.CORE_EXCP_LEVEL_ERROR,
"Session.addremovectrlnet()", None, msg)
prefix = prefixes[0].split(':', 1)[1]
assign_address = False
try:
prefix = prefixes[0].split(':', 1)[1]
except IndexError:
prefix = prefixes[0]
else:
# with one prefix, only master gets a ctrlnet address
assign_address = self.master
@ -1071,7 +1079,6 @@ class SessionConfig(ConfigurableManager, Configurable):
controlnets = value.split()
if len(controlnets) < 2:
return # multiple controlnet prefixes do not exist
servers = self.session.broker.getserverlist()
if len(servers) < 2:
return # not distributed