X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=osm_nbi%2Fbase_topic.py;h=c67ec76903d0ed686279376b278535bfb31fa63e;hb=f3ea2ed8d6932d3709e15a8f69a34f57405bb740;hp=5492a8f2798177411e320a2e2163ef9c74a62e8b;hpb=19b9752a7f43e1fcf1bdfd0040c1e8edfe9e6f3a;p=osm%2FNBI.git

diff --git a/osm_nbi/base_topic.py b/osm_nbi/base_topic.py
index 5492a8f..c67ec76 100644
--- a/osm_nbi/base_topic.py
+++ b/osm_nbi/base_topic.py
@@ -65,6 +65,26 @@ def versiontuple(v):
     return tuple(filled)
 
 
+def increment_ip_mac(ip_mac, vm_index=1):
+    if not isinstance(ip_mac, str):
+        return ip_mac
+    try:
+        # try with ipv4 look for last dot
+        i = ip_mac.rfind(".")
+        if i > 0:
+            i += 1
+            return "{}{}".format(ip_mac[:i], int(ip_mac[i:]) + vm_index)
+        # try with ipv6 or mac look for last colon. Operate in hex
+        i = ip_mac.rfind(":")
+        if i > 0:
+            i += 1
+            # format in hex, len can be 2 for mac or 4 for ipv6
+            return ("{}{:0" + str(len(ip_mac) - i) + "x}").format(ip_mac[:i], int(ip_mac[i:], 16) + vm_index)
+    except Exception:
+        pass
+    return None
+
+
 class BaseTopic:
     # static variables for all instance classes
     topic = None        # to_override
@@ -127,7 +147,7 @@ class BaseTopic:
             if count >= quota:
                 name = proj["name"]
                 raise ValidationError("quota ({}={}) exceeded for project {} ({})".format(quota_name, quota, name, pid),
-                                      http_code=HTTPStatus.UNAUTHORIZED)
+                                      http_code=HTTPStatus.UNPROCESSABLE_ENTITY)
 
     def _validate_input_new(self, input, force=False):
         """