def loadbalancer(datarate, Balancer, chain):
if Balancer['type'] == 'min':
if datarate < float(Balancer['threshhold']):
for flow_delete in Balancer['Delete flows']:
delete_flow(flow_finder(flow_delete))
for flow_add in Balancer['Add flows']:
add_flow(flow_finder(flow_add))
return 'used'
else:
return ''
elif Balancer['type'] == 'max':
if datarate > float(Balancer['threshhold']):
print '>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>'
print '[LB Info]' + ctime()
print 'Load balancer triggered:' + ' Chain- ' + chain + ' Rule- ' + Balancer[
'balancerName']
for flow_delete in Balancer['Delete flows']:
delete_flow(flow_finder(flow_delete))
for flow_add in Balancer['Add flows']:
add_flow(flow_finder(flow_add))
return 'used'
else:
return ''
def loadbalancer(datarate,Balancer,chain):
if Balancer['type']=='min':
if datarate<float(Balancer['threshhold']):
for flow_delete in Balancer['Delete flows']:
delete_flow(flow_finder(flow_delete))
for flow_add in Balancer['Add flows']:
add_flow(flow_finder(flow_add))
return 'used'
else:
return ''
elif Balancer['type']=='max':
if datarate>float(Balancer['threshhold']):
print '>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>'
print '[LB Info]'+ctime()
print 'Load balancer triggered:'+' Chain- '+chain+' Rule- '+Balancer['balancerName']
for flow_delete in Balancer['Delete flows']:
delete_flow(flow_finder(flow_delete))
for flow_add in Balancer['Add flows']:
add_flow(flow_finder(flow_add))
return 'used'
else:
return ''
def recovery_manager(tailNodeConnector, headNodeConnector, reds):
# search if any redundancy rules hit
for red in reds:
if tailNodeConnector == red["tailNodeConnector"]:
if headNodeConnector == red["headNodeConnector"]:
print "A previous failed link recovered:", red["redundancy name"]
for flow_add in red["Add flows"]:
delete_flow(flow_finder(flow_add))
for flow_delete in red["Delete flows"]:
add_flow(flow_finder(flow_delete))
def recovery_manager(tailNodeConnector, headNodeConnector, reds):
#search if any redundancy rules hit
for red in reds:
if tailNodeConnector == red['tailNodeConnector']:
if headNodeConnector == red['headNodeConnector']:
print 'A previous failed link recovered:', red[
'redundancy name']
for flow_add in red['Add flows']:
delete_flow(flow_finder(flow_add))
for flow_delete in red['Delete flows']:
add_flow(flow_finder(flow_delete))
def redundancy_manager(tailNodeConnector, headNodeConnector, reds):
#search if any redundancy rules hit
for red in reds:
if tailNodeConnector == red['tailNodeConnector']:
if headNodeConnector == red['headNodeConnector']:
print 'redundancy activated:', red['redundancy name']
for flow_delete in red['Delete flows']:
delete_flow(flow_finder(flow_delete))
delete_flow(flow_finder(red['Add flows'][0]))
for flow_add in red['Add flows']:
add_flow(flow_finder(flow_add))
def redundancy_manager(tailNodeConnector,headNodeConnector,reds):
#search if any redundancy rules hit
for red in reds:
if tailNodeConnector==red['tailNodeConnector']:
if headNodeConnector==red['headNodeConnector']:
print 'redundancy activated:',red['redundancy name']
for flow_delete in red['Delete flows']:
delete_flow(flow_finder(flow_delete))
delete_flow(flow_finder(red['Add flows'][0]))
for flow_add in red['Add flows']:
add_flow(flow_finder(flow_add))
def loadbalancer(datarate,Balancer):
if Balancer['type']=='min':
if datarate<float(Balancer['threshhold']):
for flow_delete in red['Delete flows']:
delete_flow(flow_finder(flow_delete))
for flow_add in red['Add flows']:
add_flow(flow_finder(flow_add))
return 'used'
else:
return ''
elif Balancer['type']=='max':
if datarate>float(Balancer['threshhold']):
print 'lb truggered'
for flow_add in red['Add flows']:
add_flow_tcp(flow_finder(flow_add))
return 'used'
else:
return ''
def redundancy_manager(tailNodeConnector,headNodeConnector,reds,red_status):
#search if any redundancy rules hit
for red in reds:
if tailNodeConnector==red['tailNodeConnector']:
if headNodeConnector==red['headNodeConnector']:
if red['depend']!='self':
if red_status[red['depend']]=='active':
print '[Service Info]'+ctime()
print 'Redundancy triggered:',red['redundancy name']
for red_d in reds:
if red_d['redundancy name']==red['depend']:
for flow_add in red['Add flows']:
delete_flow(flow_finder(flow_add))
for flow_delete in red['Delete flows']:
add_flow(flow_finder(flow_delete))
for flow_delete in red['Delete flows']:
delete_flow(flow_finder(flow_delete))
delete_flow(flow_finder(red['Add flows'][0]))
for flow_add in red['Add flows']:
add_flow(flow_finder(flow_add))
red_status[red['redundancy name']]='active'
break
elif red['depend']=='self':
print '[Service Info]'+ctime()
print 'Redundancy triggered:',red['redundancy name']
for flow_delete in red['Delete flows']:
delete_flow(flow_finder(flow_delete))
delete_flow(flow_finder(red['Add flows'][0]))
for flow_add in red['Add flows']:
add_flow(flow_finder(flow_add))
red_status[red['redundancy name']]='active'
return red_status
def redundancy_manager(tailNodeConnector, headNodeConnector, reds, red_status):
#search if any redundancy rules hit
for red in reds:
if tailNodeConnector == red['tailNodeConnector']:
if headNodeConnector == red['headNodeConnector']:
if red['depend'] != 'self':
if red_status[red['depend']] == 'active':
print '[Service Info]' + ctime()
print 'Redundancy triggered:', red['redundancy name']
for red_d in reds:
if red_d['redundancy name'] == red['depend']:
for flow_add in red['Add flows']:
delete_flow(flow_finder(flow_add))
for flow_delete in red['Delete flows']:
add_flow(flow_finder(flow_delete))
for flow_delete in red['Delete flows']:
delete_flow(flow_finder(flow_delete))
delete_flow(flow_finder(red['Add flows'][0]))
for flow_add in red['Add flows']:
add_flow(flow_finder(flow_add))
red_status[red['redundancy name']] = 'active'
break
elif red['depend'] == 'self':
print '[Service Info]' + ctime()
print 'Redundancy triggered:', red['redundancy name']
for flow_delete in red['Delete flows']:
delete_flow(flow_finder(flow_delete))
delete_flow(flow_finder(red['Add flows'][0]))
for flow_add in red['Add flows']:
add_flow(flow_finder(flow_add))
red_status[red['redundancy name']] = 'active'
return red_status
