def get(self, tenant_id):
global engine
global upPortByLvlPort
global W
abort_if_tenant_doesnt_exist(tenant_id)
hosts = laas.VecInt()
l1UpPorts = laas.VecPairInt()
l2UpPorts = laas.VecPairInt()
if not engine.getTenantAlloc(tenant_id, hosts, l1UpPorts, l2UpPorts):
portNames = []
for i in range(0, l2UpPorts.size()):
iNp = l2UpPorts[i]
allocSwIdx = iNp[0]
pn = iNp[1]
for j in range(0, W[1]):
swIdx = allocSwIdx * W[1] + j
key = [2, swIdx, pn].__str__()
name = upPortByLvlPort[key]
if name is None:
portNames.append("UNDEF")
else:
portNames.append(name)
return portNames
else:
abort(
410,
message="Fail to get L2 ports for tenant {}".format(tenant_id))
def get(self, tenant_id):
global engine
global dnPortByLvlPort
global M
abort_if_tenant_doesnt_exist(tenant_id)
hosts = laas.VecInt()
l1UpPorts = laas.VecPairInt()
l2UpPorts = laas.VecPairInt()
if not engine.getTenantAlloc(tenant_id, hosts, l1UpPorts, l2UpPorts):
portNames = []
for i in range(0, hosts.size()):
j = hosts[i]
k = j / M[0]
p = j % M[0]
key = [1, k, p].__str__()
name = dnPortByLvlPort[key]
if name is None:
portNames.append("UNDEF")
else:
portNames.append(name)
return portNames
else:
abort(
408,
message="Fail to get L0 ports for tenant {}".format(tenant_id))
def addOpenStackTenent(id):
global engine
global osCmdId
directory = 'OSCfg'
if not os.path.exists(directory):
os.makedirs(directory)
osCmdId = osCmdId + 1
cmdName = "cmd-%d.sh" % osCmdId
logName = "cmd-%d.log" % osCmdId
fileName = os.path.join(directory, cmdName)
F = open(fileName, 'w')
if F is None:
raise LaaSFailure("Cannot write OS cmd file: %s" % fileName)
logFile = os.path.join(directory, logName)
F.write("#!/bin/bash\n")
F.write("#\n# Adding tenant %d to OpenStack\n#\n" % id)
aggrName = "laas-aggr-%d" % id
tenantName = "laas-tenant-%d" % id
F.write("echo Adding tenant %d to OpenStack > %s\n" % (id, logFile))
F.write("keystone tenant-create --name %s --description \"LaaS Tenant %d\" >> %s\n" % \
(tenantName, id, logFile))
F.write("tenantId=`keystone tenant-get %s | awk '/ id /{print $4}'` >> %s\n" % \
(tenantName, logFile))
F.write("nova aggregate-create %s >> %s\n" % (aggrName, logFile))
# HACK for now we assume no need for key
F.write(
"nova aggregate-set-metadata %s filter_tenant_id=$tenantId >> %s\n" %
(aggrName, logFile))
hosts = laas.VecInt()
l1UpPorts = laas.VecPairInt()
l2UpPorts = laas.VecPairInt()
if engine.getTenantAlloc(id, hosts, l1UpPorts, l2UpPorts):
raise LaaSFailure("Cannot get tenant %d information" % id)
for i in range(0, hosts.size()):
j = hosts[i]
key = [0, j, 0].__str__()
nameNPort = upPortByLvlPort[key] # = {'sName': sName, 'pNum': pNum}
if nameNPort is not None:
F.write("nova aggregate-add-host %s %s >> %s\n" %
(aggrName, nameNPort['sName'], logName))
F.close()
if callOpenStack:
safeExecute(fileName)
return 0
def delOpenStackTenant(id):
global engine
global osCmdId
global callOpenStack
hosts = laas.VecInt()
l1UpPorts = laas.VecPairInt()
l2UpPorts = laas.VecPairInt()
if engine.getTenantAlloc(id, hosts, l1UpPorts, l2UpPorts):
raise LaaSFailure("Cannot get tenant %d information" % id)
directory = 'OSCfg'
if not os.path.exists(directory):
os.makedirs(directory)
osCmdId = osCmdId + 1
cmdName = "cmd-%d.sh" % osCmdId
logName = "cmd-%d.log" % osCmdId
fileName = os.path.join(directory, cmdName)
F = open(fileName, 'w')
if F is None:
raise LaaSFailure("Cannot write OS cmd file: %s" % fileName)
logFile = os.path.join(directory, logName)
F.write("#!/bin/bash\n")
F.write("#\n# Removing tenant %d from OpenStack\n#\n" % id)
aggrName = "laas-aggr-%d" % id
tenantName = "laas-tenant-%d" % id
for i in range(0, hosts.size()):
j = hosts[i]
key = [0, j, 0].__str__()
nameNPort = upPortByLvlPort[key] # = {'sName': sName, 'pNum': pNum}
if nameNPort is not None:
F.write("nova aggregate-remove-host %s %s >> %s\n" %
(aggrName, nameNPort['sName'], logName))
F.write("nova aggregate-delete %s >> %s\n" % (aggrName, logFile))
F.write("keystone tenant-delete %s >> %s\n" % (tenantName, logFile))
F.close()
if callOpenStack:
safeExecute(fileName)
return 0
def get(self, tenant_id):
global engine
global nameByLevelIdx
abort_if_tenant_doesnt_exist(tenant_id)
hosts = laas.VecInt()
l1UpPorts = laas.VecPairInt()
l2UpPorts = laas.VecPairInt()
if not engine.getTenantAlloc(tenant_id, hosts, l1UpPorts, l2UpPorts):
hostNames = []
for i in range(0, hosts.size()):
j = hosts[i]
key = [0, j].__str__()
name = nameByLevelIdx[key]
if name is None:
hostNames.append("UNDEF")
else:
hostNames.append(name)
return hostNames
else:
abort(407,
message="Fail to get hosts for tenant {}".format(tenant_id))
def get(self, tenant_id):
global engine
global upPortByLvlPort
abort_if_tenant_doesnt_exist(tenant_id)
hosts = laas.VecInt()
l1UpPorts = laas.VecPairInt()
l2UpPorts = laas.VecPairInt()
if not engine.getTenantAlloc(tenant_id, hosts, l1UpPorts, l2UpPorts):
portNames = []
for i in range(0, l1UpPorts.size()):
iNp = l1UpPorts[i]
key = [1, iNp[0], iNp[1]].__str__()
name = upPortByLvlPort[key]
if name is None:
portNames.append("UNDEF")
else:
portNames.append(name)
return portNames
else:
abort(
409,
message="Fail to get L1 ports for tenant {}".format(tenant_id))
def post(self):
global W
args = parser.parse_args()
tenant_id = args['id']
abort_if_tenant_exist(tenant_id)
g = laas.VecInt(1)
g[0] = args['n']
if not engine.allocTenant(tenant_id, g):
hosts = laas.VecInt()
l1UpPorts = laas.VecPairInt()
l2UpPorts = laas.VecPairInt()
engine.getTenantAlloc(tenant_id, hosts, l1UpPorts, l2UpPorts)
TENANTS[tenant_id] = {
'N': args['n'],
'hosts': hosts.size(),
'l1Ports': l1UpPorts.size(),
'l2Ports': W[1] * l2UpPorts.size()
}
updateSDNConf()
addOpenStackTenent(tenant_id)
return TENANTS[tenant_id], 201
else:
abort(406, message="Fail to allocate tenant {}".format(tenant_id))
def run(self):
# we need to loop until no pending jobs or fail to place
# we have two sorted containers:
# pending - by arrival time
# running - by finish time (this is a heapq by time to list of jobs)
#
# Whenever we advance time t we need to first clear all ended jobs
# then we need to try placing all pending jobs arriving before t
#
# We advance time when either:
# 1. Some pending job can't be placed: advance to next ending job
# 2. No pending jobs at the time: advance to next pending job time
#
t0 = time()
t = 0
grps = laas.VecInt(1)
while len(self.pending):
if verbose:
print "-I- At t=%d" % t
# first clean all running jobs
endT = self.running.minT()
while endT != None and endT <= t:
endT, endingJobs = self.running.pop()
for j in endingJobs:
# note the inverse in semantics...
if not self.engine.deallocTenant(j.id):
raise SimFailure(self.engine.getLastErrorMsg())
else:
if verbose:
print "-V- Remove %s" % j
endT = self.running.minT()
# now try placement of all jobs that already arrived
j = self.pending[0]
placeFailed = False
while not placeFailed and j.arrival <= t:
grps[0] = j.N
# the engine returns 0 for success!
placeFailed = self.engine.allocTenant(j.id, grps, j.isolation)
if placeFailed:
if not self.running.len():
err = "No job running but fail to place job %s" % j
raise SimFailure(err)
else:
if self.firstJobWaiting < 0 and t > 0:
self.firstJobWaiting = t
if verbose:
print "-V- Fail %s" % j
else:
# was placed:
hosts = laas.VecInt()
l1Up = laas.VecPairInt()
l2Up = laas.VecPairInt()
alloc = self.engine.getTenantAlloc(j.id, hosts, l1Up, l2Up)
j.actNumHosts = hosts.size()
j.numL1UpLinks = l1Up.size()
j.numL2UpLinks = l2Up.size() * self.W[1]
if verbose:
print "-V- Place %s %d hosts %d L1 %d L2" % \
(j, j.actNumHosts, j.numL1UpLinks, j.numL2UpLinks)
self.running.insert(t + j.length, j)
j.start = t
self.lastJobPlacement = t
self.pending.pop(0)
if len(self.pending):
j = self.pending[0]
else:
placeFailed = True
# we can reach here on two cases either no more ready jobs or
# failure to place
if placeFailed:
# advance to next ending job time
t = self.running.minT()
else:
t = self.pending[0].arrival
t1 = time()
self.runTime = t1 - t0
return 0
def updateSDNConf():
global engine
global upPortByLvlPort
# make sure dest dir exists
directory = 'SDNCfg'
if not os.path.exists(directory):
os.makedirs(directory)
# clear pervious settings
deleteDirContent(directory)
# now lets populate it again
topoFileName = os.path.join(directory, 'topologies.conf')
T = open(topoFileName, 'w')
if T is None:
raise LaaSFailure("Cannot write topologies file: %s" % topoFileName)
groupsFileName = os.path.join(directory, 'groups.conf')
G = open(groupsFileName, 'w')
if G is None:
raise LaaSFailure("Cannot write groups file: %s" % groupsFileName)
chainsFileName = os.path.join(directory, 'chains.conf')
C = open(chainsFileName, 'w')
if C is None:
raise LaaSFailure("Cannot write chains file: %s" % chainsFileName)
link = 1
topo = 0
C.write(
"unicast-step\nid: %d\ntopology: %d\nengine: updn\npath-bit: 0\nend-unicast-step\n\n"
% (link, topo))
# now go over all tenants
tenants = laas.SetInt()
engine.getTenants(tenants)
for id in tenants:
link = link + 1
# topologies
T.write("topology\n")
T.write("id: %d\n" % id)
T.write("sw-grp: T%d-switches\n" % id)
T.write("hca-grp: T%d-hcas\n" % id)
T.write("end-topology\n\n")
# PQFT (?)
pqftOpts = "T%d.opensm.conf" % id
pqftOptsFileName = os.path.join(directory, pqftOpts)
O = open(pqftOptsFileName, 'w')
if C is None:
raise LaaSFailure("Cannot write options file: %s" %
pqftOptsFileName)
pqftStr = getPQFTStr(id)
if pqftStr is not None:
O.write("pqft_structure %s\n" % pqftStr)
O.close()
# Chain link
C.write("unicast-step\n")
C.write("id: %d\n" % link)
C.write("topology: %d\n" % id)
if pqftStr is not None:
C.write("engine: pqft\n")
else:
C.write("engine: updn\n")
C.write("config: %s\n" % pqftOptsFileName)
C.write("path-bit: 0\n")
C.write("end-unicast-step\n\n")
hosts = laas.VecInt()
l1UpPorts = laas.VecPairInt()
l2UpPorts = laas.VecPairInt()
if engine.getTenantAlloc(id, hosts, l1UpPorts, l2UpPorts):
raise LaaSFailure("Cannot get tenant %d information" % id)
# PORT GROUPS
G.write("port-group\n")
G.write("name: T%d-hcas\n" % id)
G.write("obj_list: ")
for i in range(0, hosts.size()):
j = hosts[i]
key = [0, j, 0].__str__()
nameNPort = upPortByLvlPort[
key] # = {'sName': sName, 'pNum': pNum}
if nameNPort is not None:
G.write("\n name=%s/U1:P%d" %
(nameNPort['sName'], nameNPort['pNum']))
G.write(";\n")
G.write("end-port-group\n\n")
# collapse switch used ports to masks
SW_PORTS = {}
for i in range(0, l1UpPorts.size()):
iNp = l1UpPorts[i]
key = [1, iNp[0], iNp[1]].__str__()
nameNPort = upPortByLvlPort[key]
if nameNPort is not None:
name = nameNPort['sName']
pn = nameNPort['pNum']
mask = 1 << pn
if name not in SW_PORTS:
SW_PORTS[name] = mask
else:
SW_PORTS[name] = SW_PORTS[name] | mask
for i in range(0, l2UpPorts.size()):
iNp = l1UpPorts[i]
key = [1, iNp[0], iNp[1]].__str__()
nameNPort = upPortByLvlPort[key]
if nameNPort is not None:
name = nameNPort['sName']
pn = nameNPort['pNum']
mask = 1 << pn
if name not in SW_PORTS:
SW_PORTS[name] = mask
else:
SW_PORTS[name] = SW_PORTS[name] | mask
# now write the group
G.write("port-group\n")
G.write("name: T%d-switches\n" % id)
if len(SW_PORTS) > 0:
G.write("obj_list: ")
for name in SW_PORTS:
mask = SW_PORTS[name]
G.write("\n name=%s/U1 pmask=0x%x" % (name, mask))
G.write(";\n")
G.write("end-port-group\n\n")
T.close()
C.close()
G.close()
return 0
