merge network/monitoring cli commands
diff --git a/emuvim/dcemulator/monitoring.py b/emuvim/dcemulator/monitoring.py
new file mode 100644
index 0000000..094c09b
--- /dev/null
+++ b/emuvim/dcemulator/monitoring.py
@@ -0,0 +1,62 @@
+__author__ = 'Administrator'
+
+import urllib2
+import logging
+from mininet.node import OVSSwitch
+import ast
+logging.basicConfig(level=logging.INFO)
+
+"""
+class to read openflow stats from the Ryu controller of the DCNEtwork
+"""
+
+class DCNetworkMonitor():
+ def __init__(self, net):
+ self.net = net
+ # link to REST_API
+ self.ip = '0.0.0.0'
+ self.port = '8080'
+ self.REST_api = 'http://{0}:{1}'.format(self.ip,self.port)
+
+
+ def get_rate(self, vnf_name, direction='tx'):
+ try:
+ vnf_switch = self.net.DCNetwork_graph.neighbors(str(vnf_name))
+
+ if len(vnf_switch) > 1:
+ logging.info("vnf: {0} has multiple ports".format(vnf_name))
+ return
+ elif len(vnf_switch) == 0:
+ logging.info("vnf: {0} is not connected".format(vnf_name))
+ return
+ else:
+ vnf_switch = vnf_switch[0]
+ next_node = self.net.getNodeByName(vnf_switch)
+
+ if not isinstance( next_node, OVSSwitch ):
+ logging.info("vnf: {0} is not connected to switch".format(vnf_name))
+ return
+
+ mon_port = self.net.DCNetwork_graph[vnf_name][vnf_switch]['dst_port']
+ switch_dpid = x = int(str(next_node.dpid),16)
+
+ ret = self.REST_cmd('stats/port', switch_dpid)
+ port_stat_dict = ast.literal_eval(ret)
+ for port_stat in port_stat_dict[str(switch_dpid)]:
+ if port_stat['port_no'] == mon_port:
+ return port_stat
+ break
+
+ return ret
+
+ except Exception as ex:
+ logging.exception("get_txrate error.")
+ return ex.message
+
+
+
+ def REST_cmd(self, prefix, dpid):
+ url = self.REST_api + '/' + str(prefix) + '/' + str(dpid)
+ req = urllib2.Request(url)
+ ret = urllib2.urlopen(req).read()
+ return ret
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