X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;ds=inline;f=emuvim%2Fdcemulator%2Fmonitoring.py;fp=emuvim%2Fdcemulator%2Fmonitoring.py;h=094c09b352d513a7d0a63966b3bd4d2d490ab674;hb=c5a536a1796846be97e5ba6ce9c20d73b6fd0052;hp=0000000000000000000000000000000000000000;hpb=a29c50cffd72de2f5533bb4f294adfe9a0f655d5;p=osm%2Fvim-emu.git

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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