renderers/vpp/src/main/java/org/opendaylight/groupbasedpolicy/renderer/vpp/policy/acl/SourceMapper.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. and others. All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.groupbasedpolicy.renderer.vpp.policy.acl;
  10
  11 import java.net.UnknownHostException;
  12 import java.util.List;
  13
  14 import org.opendaylight.groupbasedpolicy.renderer.vpp.policy.acl.AccessListUtil.ACE_DIRECTION;
  15 import org.opendaylight.groupbasedpolicy.util.EndpointUtils;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.endpoints.containment.endpoints.ContainmentEndpoint;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.parent.child.endpoints.parent.endpoint.choice.parent.endpoint._case.ParentEndpoint;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.l2_l3.rev160427.L3Context;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.endpoints.AddressEndpointWithLocation;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22
  23 class SourceMapper extends AddressMapper {
  24
  25     private static final Logger LOG = LoggerFactory.getLogger(SourceMapper.class);
  26     private static final String METADATA_IP_PREFIX = "169.254.169.254/32";
  27     private static final String OUT__METADATA = "Out__METADATA";
  28
  29     SourceMapper(ACE_DIRECTION direction) {
  30         super(direction);
  31     }
  32
  33     @Override
  34     List<GbpAceBuilder> updateExtRules(List<GbpAceBuilder> rules, AddressEndpointWithLocation localEp,
  35             ContainmentEndpoint cEp) {
  36         // TODO external networking as a next step.
  37         return rules;
  38     }
  39
  40     @Override
  41     void updateRule(AddressEndpointWithLocation addrEp, GbpAceBuilder aclRuleBuilder) {
  42         if (!EndpointUtils.getParentEndpoints(addrEp.getParentEndpointChoice()).isEmpty()) {
  43             // TODO more parents
  44             ParentEndpoint parentEp = EndpointUtils.getParentEndpoints(addrEp.getParentEndpointChoice()).get(0);
  45             if (parentEp != null && parentEp.getContextType().isAssignableFrom(L3Context.class)) {
  46                 // TODO this is a fix for metadata agent in DHCP namespace, when we will fully support multiple IPs
  47                 // per interface we shall rework this
  48                 if (aclRuleBuilder.getName().contains(OUT__METADATA)) {
  49                     LOG.trace("Setting src IP address {} in rule {}", METADATA_IP_PREFIX, aclRuleBuilder);
  50                     try {
  51                         AccessListUtil.setSourceL3Address(aclRuleBuilder, METADATA_IP_PREFIX);
  52                     } catch (UnknownHostException e) {
  53                         LOG.error("Failed to parse address {}. Cannot apply ACL entry {}. {}", METADATA_IP_PREFIX,
  54                             aclRuleBuilder, e);
  55                     }
  56                 } else {
  57                     LOG.trace("Setting src IP address {} in rule {}", parentEp.getAddress(), aclRuleBuilder);
  58                     try {
  59                         AccessListUtil.setSourceL3Address(aclRuleBuilder, parentEp.getAddress());
  60                     } catch (UnknownHostException e) {
  61                         LOG.error("Failed to parse address {}. Cannot apply ACL entry {}. {}", parentEp.getAddress(),
  62                             aclRuleBuilder, e);
  63                     }
  64                 }
  65             }
  66         }
  67     }
  68 }