Move VPPApi into a Reconciler class, add (empty) prune() create() and sync() methods. Add --force flag to enable making progress after warnings are issued

vpp/reconciler.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python
+#
+# Copyright (c) 2022 Pim van Pelt
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#     http://www.apache.org/licenses/LICENSE-2.0
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# -*- coding: utf-8 -*-
+import logging
+from vpp.vppapi import VPPApi
+
+class Reconciler():
+    def __init__(self, cfg):
+        self.logger = logging.getLogger('vppcfg.vppapi')
+        self.logger.addHandler(logging.NullHandler())
+
+        self.vpp = VPPApi()
+
+    def readconfig(self):
+        return self.vpp.readconfig()
+
+    def phys_exist(self, ifname_list):
+        """ Return True if all interfaces in the `ifname_list` exist as physical interface names
+        in VPP. Return False otherwise."""
+        ret = True
+        for ifname in ifname_list:
+            if not ifname in self.vpp.config['interface_names']:
+                self.logger.warning("Interface %s does not exist in VPP" % ifname)
+                ret = False
+        return ret
+
+    def prune_addresses(self, ifname, address_list):
+        """ Remove all addresses from interface ifname, except those in address_list """
+        
+    def prune(self):
+        return False
+
+    def create(self):
+        return False
+
+    def sync(self):
+        return False