2 * Copyright (c) 2016 Brocade Communications Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.protocol.bgp.flowspec.ipv4;
10 import java.util.ArrayList;
11 import java.util.List;
12 import java.util.Optional;
14 import org.opendaylight.protocol.bgp.flowspec.AbstractFlowspecNlriParser;
15 import org.opendaylight.protocol.bgp.flowspec.handlers.NumericOneByteOperandParser;
16 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;
17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev180329.flowspec.destination.FlowspecBuilder;
18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev180329.flowspec.destination.flowspec.FlowspecType;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev180329.flowspec.destination.group.ipv4.flowspec.flowspec.type.DestinationPrefixCase;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev180329.flowspec.destination.group.ipv4.flowspec.flowspec.type.DestinationPrefixCaseBuilder;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev180329.flowspec.destination.group.ipv4.flowspec.flowspec.type.ProtocolIpCase;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev180329.flowspec.destination.group.ipv4.flowspec.flowspec.type.ProtocolIpCaseBuilder;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev180329.flowspec.destination.group.ipv4.flowspec.flowspec.type.SourcePrefixCase;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev180329.flowspec.destination.group.ipv4.flowspec.flowspec.type.SourcePrefixCaseBuilder;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev180329.flowspec.destination.group.ipv4.flowspec.flowspec.type.protocol.ip._case.ProtocolIps;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev180329.flowspec.destination.group.ipv4.flowspec.flowspec.type.protocol.ip._case.ProtocolIpsBuilder;
27 import org.opendaylight.yangtools.yang.common.Uint8;
28 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
29 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
30 import org.opendaylight.yangtools.yang.data.api.schema.ChoiceNode;
31 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
32 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
33 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
36 * Helper for parsing IPv4 Flowspec.
40 public final class FlowspecIpv4NlriParserHelper {
41 private static final NodeIdentifier PROTOCOL_IP_NID = new NodeIdentifier(ProtocolIps.QNAME);
43 private FlowspecIpv4NlriParserHelper() {
47 public static void extractFlowspec(final ChoiceNode fsType, final FlowspecBuilder fsBuilder) {
48 if (fsType.getChild(AbstractFlowspecNlriParser.DEST_PREFIX_NID).isPresent()) {
49 fsBuilder.setFlowspecType(new DestinationPrefixCaseBuilder().setDestinationPrefix(
50 new Ipv4Prefix((String) fsType.getChild(AbstractFlowspecNlriParser.DEST_PREFIX_NID).get()
51 .getValue())).build());
52 } else if (fsType.getChild(AbstractFlowspecNlriParser.SOURCE_PREFIX_NID).isPresent()) {
53 fsBuilder.setFlowspecType(new SourcePrefixCaseBuilder().setSourcePrefix(new Ipv4Prefix((String) fsType
54 .getChild(AbstractFlowspecNlriParser.SOURCE_PREFIX_NID).get().getValue())).build());
55 } else if (fsType.getChild(PROTOCOL_IP_NID).isPresent()) {
56 fsBuilder.setFlowspecType(new ProtocolIpCaseBuilder()
57 .setProtocolIps(createProtocolsIps((UnkeyedListNode) fsType.getChild(PROTOCOL_IP_NID).get()))
62 public static void buildFlowspecString(final FlowspecType value, final StringBuilder buffer) {
63 if (value instanceof DestinationPrefixCase) {
65 buffer.append(((DestinationPrefixCase) value).getDestinationPrefix().getValue());
66 } else if (value instanceof SourcePrefixCase) {
67 buffer.append("from ");
68 buffer.append(((SourcePrefixCase) value).getSourcePrefix().getValue());
69 } else if (value instanceof ProtocolIpCase) {
70 buffer.append("where IP protocol ");
71 buffer.append(NumericOneByteOperandParser.INSTANCE.toString(((ProtocolIpCase) value).getProtocolIps()));
75 private static List<ProtocolIps> createProtocolsIps(final UnkeyedListNode protocolIpsData) {
76 final List<ProtocolIps> protocolIps = new ArrayList<>();
78 for (final UnkeyedListEntryNode node : protocolIpsData.getValue()) {
79 final ProtocolIpsBuilder ipsBuilder = new ProtocolIpsBuilder();
80 final Optional<DataContainerChild<? extends PathArgument, ?>> opValue
81 = node.getChild(AbstractFlowspecNlriParser.OP_NID);
82 opValue.ifPresent(dataContainerChild -> ipsBuilder.setOp(NumericOneByteOperandParser
83 .INSTANCE.create((Set<String>) dataContainerChild.getValue())));
84 final Optional<DataContainerChild<? extends PathArgument, ?>> valueNode
85 = node.getChild(AbstractFlowspecNlriParser.VALUE_NID);
86 valueNode.ifPresent(dataContainerChild -> ipsBuilder.setValue((Uint8) dataContainerChild.getValue()));
87 protocolIps.add(ipsBuilder.build());