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Move IPv4/6 Unicast extension to bgp-inet
[bgpcep.git] / bgp / inet / src / main / java / org / opendaylight / protocol / bgp / inet / codec / Ipv4NlriParser.java
diff --git a/bgp/inet/src/main/java/org/opendaylight/protocol/bgp/inet/codec/Ipv4NlriParser.java b/bgp/inet/src/main/java/org/opendaylight/protocol/bgp/inet/codec/Ipv4NlriParser.java
new file mode 100644 (file)
index 0000000..9e9dd68
--- /dev/null
+++ b/bgp/inet/src/main/java/org/opendaylight/protocol/bgp/inet/codec/Ipv4NlriParser.java
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2013, 2016 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.protocol.bgp.inet.codec;
+
+import com.google.common.base.Preconditions;
+import io.netty.buffer.ByteBuf;
+import java.util.ArrayList;
+import java.util.List;
+import org.opendaylight.protocol.bgp.parser.BgpTableTypeImpl;
+import org.opendaylight.protocol.bgp.parser.spi.MultiPathSupportUtil;
+import org.opendaylight.protocol.bgp.parser.spi.NlriParser;
+import org.opendaylight.protocol.bgp.parser.spi.NlriSerializer;
+import org.opendaylight.protocol.bgp.parser.spi.PathIdUtil;
+import org.opendaylight.protocol.bgp.parser.spi.PeerSpecificParserConstraint;
+import org.opendaylight.protocol.util.ByteBufWriteUtil;
+import org.opendaylight.protocol.util.Ipv4Util;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.DestinationIpv4;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.DestinationIpv4Builder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.destination.ipv4.Ipv4Prefixes;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.destination.ipv4.Ipv4PrefixesBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationIpv4Case;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationIpv4CaseBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.Attributes;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.Attributes1;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.Attributes2;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpReachNlriBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpUnreachNlriBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.reach.nlri.AdvertizedRoutes;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.reach.nlri.AdvertizedRoutesBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.unreach.nlri.WithdrawnRoutes;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.unreach.nlri.WithdrawnRoutesBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.AddressFamily;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.SubsequentAddressFamily;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+
+public final class Ipv4NlriParser implements NlriParser, NlriSerializer {
+
+    private static DestinationIpv4 prefixes(final ByteBuf nlri, final PeerSpecificParserConstraint constraints,
+            final Class<? extends AddressFamily> afi, final Class<? extends SubsequentAddressFamily> safi) {
+        final List<Ipv4Prefixes> prefixes = new ArrayList<>();
+        while (nlri.isReadable()) {
+            final Ipv4PrefixesBuilder prefixesBuilder = new Ipv4PrefixesBuilder();
+            if (MultiPathSupportUtil.isTableTypeSupported(constraints, new BgpTableTypeImpl(afi, safi))) {
+                prefixesBuilder.setPathId(PathIdUtil.readPathId(nlri));
+            }
+            prefixesBuilder.setPrefix(Ipv4Util.prefixForByteBuf(nlri));
+            prefixes.add(prefixesBuilder.build());
+        }
+        return new DestinationIpv4Builder().setIpv4Prefixes(prefixes).build();
+    }
+
+    @Override
+    public void parseNlri(final ByteBuf nlri, final MpUnreachNlriBuilder builder) {
+        parseNlri(nlri, builder, null);
+    }
+
+    @Override
+    public void parseNlri(final ByteBuf nlri, final MpReachNlriBuilder builder) {
+        parseNlri(nlri, builder, null);
+    }
+
+    @Override
+    public void parseNlri(final ByteBuf nlri, final MpReachNlriBuilder builder, final PeerSpecificParserConstraint constraint) {
+        builder.setAdvertizedRoutes(new AdvertizedRoutesBuilder().setDestinationType(
+                new DestinationIpv4CaseBuilder().setDestinationIpv4(prefixes(nlri, constraint, builder.getAfi(), builder.getSafi())).build()).build());
+    }
+
+    @Override
+    public void parseNlri(final ByteBuf nlri, final MpUnreachNlriBuilder builder, final PeerSpecificParserConstraint constraint) {
+        builder.setWithdrawnRoutes(new WithdrawnRoutesBuilder().setDestinationType(new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationIpv4CaseBuilder().setDestinationIpv4(
+                prefixes(nlri, constraint, builder.getAfi(), builder.getSafi())).build()).build());
+    }
+
+    @Override
+    public void serializeAttribute(final DataObject attribute, final ByteBuf byteAggregator) {
+        Preconditions.checkArgument(attribute instanceof Attributes, "Attribute parameter is not a PathAttribute object.");
+        final Attributes pathAttributes = (Attributes) attribute;
+        final Attributes1 pathAttributes1 = pathAttributes.getAugmentation(Attributes1.class);
+        final Attributes2 pathAttributes2 = pathAttributes.getAugmentation(Attributes2.class);
+        if (pathAttributes1 != null) {
+            final AdvertizedRoutes advertizedRoutes = pathAttributes1.getMpReachNlri().getAdvertizedRoutes();
+            if (advertizedRoutes != null && advertizedRoutes.getDestinationType() instanceof DestinationIpv4Case) {
+                final DestinationIpv4Case destinationIpv4Case = (DestinationIpv4Case) advertizedRoutes.getDestinationType();
+                for (final Ipv4Prefixes ipv4Prefix : destinationIpv4Case.getDestinationIpv4().getIpv4Prefixes()) {
+                    PathIdUtil.writePathId(ipv4Prefix.getPathId(), byteAggregator);
+                    ByteBufWriteUtil.writeMinimalPrefix(ipv4Prefix.getPrefix(), byteAggregator);
+                }
+            }
+        } else if (pathAttributes2 != null) {
+            final WithdrawnRoutes withdrawnRoutes = pathAttributes2.getMpUnreachNlri().getWithdrawnRoutes();
+            if (withdrawnRoutes != null && withdrawnRoutes.getDestinationType() instanceof org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationIpv4Case) {
+                final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationIpv4Case destinationIpv4Case =
+                        (org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationIpv4Case) withdrawnRoutes.getDestinationType();
+                for (final Ipv4Prefixes ipv4Prefix : destinationIpv4Case.getDestinationIpv4().getIpv4Prefixes()) {
+                    PathIdUtil.writePathId(ipv4Prefix.getPathId(), byteAggregator);
+                    ByteBufWriteUtil.writeMinimalPrefix(ipv4Prefix.getPrefix(), byteAggregator);
+                }
+            }
+        }
+    }
+}
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BGP/PCEP protocol library