minor cleanup, add stop_flow
diff --git a/src/emuvim/api/zerorpc/network.py b/src/emuvim/api/zerorpc/network.py
index 37b34f9..5fccf4e 100755
--- a/src/emuvim/api/zerorpc/network.py
+++ b/src/emuvim/api/zerorpc/network.py
@@ -134,6 +134,16 @@
             logging.exception("RPC error.")
             return ex.message
 
+    # remove the flow metrics measurement
+    def setup_flow(self, vnf_name, vnf_interface, metric, cookie):
+        logging.debug("RPC CALL: stop flow")
+        try:
+            c = self.net.monitor_agent.setup_flow(vnf_name, vnf_interface, metric, cookie)
+            return c
+        except Exception as ex:
+            logging.exception("RPC error.")
+            return ex.message
+
     # do prometheus query
     def prometheus(self, dc_label, vnf_name, vnf_interface, query):
         logging.debug("RPC CALL: query prometheus")
diff --git a/src/emuvim/cli/monitor.py b/src/emuvim/cli/monitor.py
index 123abe5..1f2cc36 100755
--- a/src/emuvim/cli/monitor.py
+++ b/src/emuvim/cli/monitor.py
@@ -56,6 +56,16 @@
             args.get("cookie"))

         pp.pprint(r)

 

+    def stop_flow(self, args):

+        vnf_name = self._parse_vnf_name(args.get("vnf_name"))

+        vnf_interface = self._parse_vnf_interface(args.get("vnf_name"))

+        r = self.c.stop_flow(

+            vnf_name,

+            vnf_interface,

+            args.get("metric"),

+            args.get("cookie"))

+        pp.pprint(r)

+

     def prometheus(self, args):

         vnf_name = self._parse_vnf_name(args.get("vnf_name"))

         vnf_interface = self._parse_vnf_interface(args.get("vnf_name"))

@@ -82,7 +92,8 @@
 parser = argparse.ArgumentParser(description='son-emu monitor')

 parser.add_argument(

     "command",

-    help="Action to be executed")

+    choices=['setup_metric', 'stop_metric', 'setup_flow', 'stop_flow','prometheus'],

+    help="setup/stop a metric/flow to be monitored")

 parser.add_argument(

     "--vnf_name", "-vnf", dest="vnf_name",

     help="vnf name:interface to be monitored")

diff --git a/src/emuvim/dcemulator/net.py b/src/emuvim/dcemulator/net.py
index f5bab44..c29c786 100755
--- a/src/emuvim/dcemulator/net.py
+++ b/src/emuvim/dcemulator/net.py
@@ -236,15 +236,17 @@
         if cmd == 'add-flow':
             ret = self._chainAddFlow(vnf_src_name, vnf_dst_name, vnf_src_interface, vnf_dst_interface, **kwargs)
             if kwargs.get('bidirectional'):
-                return ret +'\n' + self._chainAddFlow(vnf_dst_name, vnf_src_name, vnf_dst_interface, vnf_src_interface, **kwargs)
+                ret = ret +'\n' + self._chainAddFlow(vnf_dst_name, vnf_src_name, vnf_dst_interface, vnf_src_interface, **kwargs)
 
         elif cmd == 'del-flows':  # TODO: del-flow to be implemented
             ret = self._chainAddFlow(vnf_src_name, vnf_dst_name, vnf_src_interface, vnf_dst_interface, **kwargs)
             if kwargs.get('bidirectional'):
-                return ret + '\n' + self._chainAddFlow(vnf_dst_name, vnf_src_name, vnf_dst_interface, vnf_src_interface, **kwargs)
+                ret = ret + '\n' + self._chainAddFlow(vnf_dst_name, vnf_src_name, vnf_dst_interface, vnf_src_interface, **kwargs)
 
         else:
-            return "Command unknown"
+            ret = "Command unknown"
+
+        return ret
 
 
     def _chainAddFlow(self, vnf_src_name, vnf_dst_name, vnf_src_interface=None, vnf_dst_interface=None, **kwargs):