add resync testcase

It is an extention of testcase_11.py to check resync happens properly
between ODL and OVS when there is no changes from northbound

JIRA: SDNVPN-175

Change-Id: I63bd17f5e5fdab7d5ab90a2be2836e02e7dd54fa
Signed-off-by: Periyasamy Palanisamy <periyasamy.palanisamy@ericsson.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/sdnvpn/lib/utils.py b/sdnvpn/lib/utils.py
index 269a319..78493be 100644
--- a/sdnvpn/lib/utils.py
+++ b/sdnvpn/lib/utils.py
@@ -756,3 +756,20 @@ def get_ovs_groups(compute_node_list, ovs_br_list, of_protocol="OpenFlow13"):
                 cmd_out_lines += (compute_node.run_cmd(ovs_groups_cmd).strip().
                                   split("\n"))
     return cmd_out_lines
+
+
+def get_ovs_flows(compute_node_list, ovs_br_list, of_protocol="OpenFlow13"):
+    """
+    Gets, as input, a list of compute nodes and a list of OVS bridges
+    and returns the command console output, as a list of lines, that
+    contains all the OVS flows from all bridges and nodes in lists.
+    """
+    cmd_out_lines = []
+    for compute_node in compute_node_list:
+        for ovs_br in ovs_br_list:
+            if ovs_br in compute_node.run_cmd("sudo ovs-vsctl show"):
+                ovs_flows_cmd = ("sudo ovs-ofctl dump-flows {} -O {} | "
+                                 "grep table=".format(ovs_br, of_protocol))
+                cmd_out_lines += (compute_node.run_cmd(ovs_flows_cmd).strip().
+                                  split("\n"))
+    return cmd_out_lines