Rename validator/ to config/

config/bridgedomain.py

@@ -0,0 +1,138 @@
+#
+# 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.
+#
+import logging
+import config.interface as interface
+import config.lcp as lcp
+import config.address as address
+
+def get_bridgedomains(yaml):
+    """ Return a list of all bridgedomains. """
+    ret = []
+    if not 'bridgedomains' in yaml:
+        return ret
+    for ifname, iface in yaml['bridgedomains'].items():
+        ret.append(ifname)
+    return ret
+
+
+def get_by_name(yaml, ifname):
+    """ Return the BridgeDomain by name, if it exists. Return None,None otherwise. """
+    try:
+        if ifname in yaml['bridgedomains']:
+            return ifname, yaml['bridgedomains'][ifname]
+    except:
+        pass
+    return None, None
+
+
+def is_bridgedomain(yaml, ifname):
+    """ Returns True if the name is an existing bridgedomain (ie bd[0-9]+). """
+    ifname, iface = get_by_name(yaml, ifname)
+    return not iface == None
+
+
+def is_bvi(yaml, ifname):
+    """ Returns True if the interface name is an existing BVI. """
+    if not ifname.startswith("bvi"):
+        return False
+    idx = ifname[3:]
+    if not idx.isnumeric():
+        return False
+    bridgename, bridge = get_by_name(yaml, "bd%d" % (int(idx)))
+    if not bridge:
+        return False
+
+    ## If the BridgeDomain has an 'lcp', then it has a Bridge Virtual Interface
+    if 'lcp' in bridge:
+        return True
+    return False
+
+
+def get_bridge_interfaces(yaml):
+    """ Returns a list of all interfaces that are bridgedomain members """
+
+    ret = []
+    if not 'bridgedomains' in yaml:
+        return ret
+
+    for ifname, iface in yaml['bridgedomains'].items():
+        if 'interfaces' in iface:
+            ret.extend(iface['interfaces'])
+
+    return ret
+
+def is_bridge_interface_unique(yaml, ifname):
+    """ Returns True if this interface is referenced in bridgedomains zero or one times """
+
+    ifs = get_bridge_interfaces(yaml)
+    return ifs.count(ifname) < 2
+
+
+def is_bridge_interface(yaml, ifname):
+    """ Returns True if this interface is a member of a BridgeDomain """
+
+    return ifname in get_bridge_interfaces(yaml)
+
+
+def validate_bridgedomains(yaml):
+    result = True
+    msgs = []
+    logger = logging.getLogger('vppcfg.config')
+    logger.addHandler(logging.NullHandler())
+
+    if not 'bridgedomains' in yaml:
+        return result, msgs
+
+    for ifname, iface in yaml['bridgedomains'].items():
+        logger.debug("bridgedomain %s" % iface)
+        bd_mtu = 1500
+        if 'mtu' in iface:
+            bd_mtu = iface['mtu']
+
+        if 'addresses' in iface and not 'lcp' in iface:
+            msgs.append("bridgedomain %s has an address but no LCP" % ifname)
+            result = False
+        if 'lcp' in iface and not lcp.is_unique(yaml, iface['lcp']):
+            msgs.append("bridgedomain %s does not have a unique LCP name %s" % (ifname, iface['lcp']))
+            result = False          
+        if 'addresses' in iface:
+            for a in iface['addresses']:
+                if not address.is_allowed(yaml, ifname, iface['addresses'], a):
+                    msgs.append("bridgedomain %s IP address %s conflicts with another" % (ifname, a))
+                    result = False
+
+        if 'interfaces' in iface:
+            for member in iface['interfaces']:
+                if (None, None) == interface.get_by_name(yaml, member):
+                    msgs.append("bridgedomain %s member %s does not exist" % (ifname, member))
+                    result = False
+                    continue
+
+                if not is_bridge_interface_unique(yaml, member):
+                    msgs.append("bridgedomain %s member %s is not unique" % (ifname, member))
+                    result = False
+
+                if interface.has_lcp(yaml, member):
+                    msgs.append("bridgedomain %s member %s has an LCP" % (ifname, member))
+                    result = False
+                if interface.has_address(yaml, member):
+                    msgs.append("bridgedomain %s member %s has an address" % (ifname, member))
+                    result = False
+                member_mtu = interface.get_mtu(yaml, member)
+                if member_mtu != bd_mtu:
+                    msgs.append("bridgedomain %s member %s has MTU %d, while bridge has %d" % (ifname, member, member_mtu, bd_mtu))
+                    result = False
+
+
+    return result, msgs