1 files changed, 17 insertions, 0 deletions
diff --git a/sdnvpn/lib/utils.py b/sdnvpn/lib/utils.py
index 371f3ed..54c9730 100644
--- a/sdnvpn/lib/utils.py
+++ b/sdnvpn/lib/utils.py
@@ -727,3 +727,20 @@ def get_nova_instances_quota(nova_client):
     except Exception as e:
         logger.error("Error in getting nova instances quota: %s" % e)
         raise
+
+
+def get_ovs_groups(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 groups 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_groups_cmd = ("sudo ovs-ofctl dump-groups {} -O {} | "
+                                  "grep group".format(ovs_br, of_protocol))
+                cmd_out_lines += (compute_node.run_cmd(ovs_groups_cmd).strip().
+                                  split("\n"))
+    return cmd_out_lines