def _timer_func():
""" handler for timer function that sends the requests to all the
switches connected to the controller.
"""
log.debug("start check stat")
for connection in core.openflow._connections.values():
# FlowStatsReceived
connection.send(
of.ofp_stats_request(body=of.ofp_flow_stats_request(), type=of.ofp_stats_types_rev_map.get("OFPST_FLOW"))
)
# AggregateFlowStatsReceived
connection.send(
of.ofp_stats_request(
body=of.ofp_aggregate_stats_request(), type=of.ofp_stats_types_rev_map.get("OFPST_AGGREGATE")
)
)
# TableStatsReceived
# I don't know which methode to call (it's not of.ofp_flow_stats())
# connection.send(of.ofp_stats_request(body=of.ofp_table_stats()))
# PortStatsReceived
connection.send(
of.ofp_stats_request(
body=of.ofp_port_stats_request(port_no=of.OFPP_NONE), type=of.ofp_stats_types_rev_map.get("OFPST_PORT")
)
)
# QueueStatsReceived
body = of.ofp_queue_stats_request(port_no=of.OFPP_NONE, queue_id=of.OFPQ_ALL)
connection.send(of.ofp_stats_request(body=body, type=of.ofp_stats_types_rev_map.get("OFPST_QUEUE")))
def sendAggregateStatsRequest(self, event):
sr = of.ofp_stats_request()
sr.type = of.OFPST_AGGREGATE
sr.body = of.ofp_aggregate_stats_request()
event.connection.send(sr)
print "Sending aggregate stat request message to Switch %s " % event.dpid
def getSwitchAggregate(self, switch_dpid):
try:
bodyMsg = of.ofp_aggregate_stats_request()
bodyMsg.match = of.ofp_match()
bodyMsg.table_id = of.TABLE_ALL
bodyMsg.out_port = of.OFPP_NONE
msg = of.ofp_stats_request(body=bodyMsg)
msg.type = of.OFPST_AGGREGATE
data = {}
aggStats = self.get_switch_stats(switch_dpid, msg,
"aggregate flows")
if aggStats == None:
self.log.error("Error getting aggregate stats")
return data
data = {
"bytes": aggStats.byte_count,
"flows": aggStats.flow_count,
"packets": aggStats.packet_count
}
return data
except BaseException, e:
self.log.error(e.message)
data = {}
return data
def _on_timer():
for n in nodes:
#Sends out requests to the network nodes
core.openflow.getConnection(n.connection.dpid).send(of.ofp_features_request())
n.connection.send(of.ofp_stats_request(body=of.ofp_port_stats_request()))
n.connection.send(of.ofp_stats_request(body=of.ofp_aggregate_stats_request()))
n.connection.send(of.ofp_stats_request(body=of.ofp_flow_stats_request()))
def timer_func():
for connection in core.openflow._connections.values():
connection.send(of.ofp_stats_request(body=of.ofp_flow_stats_request()))
connection.send(
of.ofp_stats_request(body=of.ofp_aggregate_stats_request())
) # ???????????????not supported in POX yet
connection.send(of.ofp_stats_request(body=of.ofp_port_stats_request()))
log.debug("Sent %i flow/port stats request(s)",
len(core.openflow._connections))
def sendAggRequests(): global topoMat numRows = len(topoMat) for i in range(1,numRows): numCols = len(topoMat[i]) dpID = dpidToStr(i) for j in range(0,numCols): print "The dpid for which conncetion is requested = ", dpID con = core.openflow.getConnection(i) #dpID from above not being used if int(topoMat[i][j].start) == i: myPort = int(topoMat[i][j].startPort) else: myPort = int(topoMat[i][j].endPort) if con is None: print "connection object not available" return con.send(of.ofp_stats_request(body=of.ofp_aggregate_stats_request(out_port=myPort)))
def _timer_func ():
if len(core.openflow._connections.values())==0:
# since no switch is connected, clean everything.
del switches[:]
hosts.clear()
switch_desc.clear()
adjacency.clear()
link_bw.clear()
link_bw_total.clear()
byte.clear()
byte_r.clear()
clock.clear()
flow_stats.clear()
aggr_stats.clear()
port_stats.clear()
for connection in core.openflow._connections.values():
connection.send(of.ofp_stats_request(body=of.ofp_port_stats_request()))
connection.send(of.ofp_stats_request(body=of.ofp_aggregate_stats_request()))
connection.send(of.ofp_stats_request(body=of.ofp_flow_stats_request()))
connection.send(of.ofp_stats_request(body=of.ofp_desc_stats_request()))
def _timer_func ():
if len(core.openflow._connections.values())==0:
# since no switch is connected, clean everything.
del switches[:]
hosts.clear()
switch_desc.clear()
adjacency.clear()
link_bw.clear()
link_bw_total.clear()
byte.clear()
byte_r.clear()
clock.clear()
flow_stats.clear()
aggr_stats.clear()
port_stats.clear()
for connection in core.openflow._connections.values():
connection.send(of.ofp_stats_request(body=of.ofp_port_stats_request()))
connection.send(of.ofp_stats_request(body=of.ofp_aggregate_stats_request()))
connection.send(of.ofp_stats_request(body=of.ofp_flow_stats_request()))
connection.send(of.ofp_stats_request(body=of.ofp_desc_stats_request()))
def get_switch_aggregate(switch_dpid):
"""
Returns per switch aggregate stats. This includes:
- Bytes
- Flows
- Packets
:param switch_dpid: Switch DPID to request in format XX:XX:XX:XX:XX:XX:XX:XX
:type switch_dpid: str
:return: Switch aggregate stats
:rtype: JSONObject
:except BaseException: If any error occurs returns an empty object
"""
try:
# build openflow message
bodyMsg = of.ofp_aggregate_stats_request()
bodyMsg.match = of.ofp_match()
bodyMsg.table_id = of.TABLE_ALL
bodyMsg.out_port = of.OFPP_NONE
msg = of.ofp_stats_request(body=bodyMsg)
msg.type = of.OFPST_AGGREGATE
# get and verify stats
data = {}
aggStats = get_switch_stats(switch_dpid, msg, "aggregate flows")
if aggStats == None:
log.error("Error getting aggregate stats")
return json.dumps(data)
# build and return json data
data = {
"bytes": aggStats.byte_count,
"flows": aggStats.flow_count,
"packets": aggStats.packet_count
}
return json.dumps(data)
except BaseException, e:
log.error(e.message)
data = {}
return json.dumps(data)
def _on_timer():
path.clear()
for n in sw_con:
n.connection.send(
of.ofp_stats_request(body=of.ofp_aggregate_stats_request()))
def aggregate_stats_request():
for connection in core.openflow._connections.values():
connection.send(
of.ofp_stats_request(body=of.ofp_aggregate_stats_request()))
log.debug("Sent %i aggregate stats request(s)",
len(core.openflow._connections))
def _on_timer():
path.clear()
for n in sw_con:
n.connection.send(of.ofp_stats_request(body=of.ofp_aggregate_stats_request()))
def timer_func ():
for connection in core.openflow._connections.values():
connection.send(of.ofp_stats_request(body=of.ofp_flow_stats_request()))
connection.send(of.ofp_stats_request(body=of.ofp_aggregate_stats_request())) # ???????????????not supported in POX yet
connection.send(of.ofp_stats_request(body=of.ofp_port_stats_request()))
log.debug("Sent %i flow/port stats request(s)", len(core.openflow._connections))
def _init (self): sr = of.ofp_stats_request() sr.body = of.ofp_aggregate_stats_request() self._con.send(sr) self.xid = sr.xid
