BUG-608 : implemented parsers/serializers for

- SrAlgorithm
- SrCapabilities

Change-Id: I9dd5bf14f12238a64981a2f78b7a41689ab73426
Signed-off-by: Dana Kutenicsova <dkutenic@cisco.com>

diff --git a/bgp/linkstate/src/main/java/org/opendaylight/protocol/bgp/linkstate/attribute/NodeAttributesParser.java b/bgp/linkstate/src/main/java/org/opendaylight/protocol/bgp/linkstate/attribute/NodeAttributesParser.java
index 219ce9bf0e35c23615fd915a91880245f1d87535..e0f57288c791d85729289acab571e89d0634c569 100644 (file)
--- a/bgp/linkstate/src/main/java/org/opendaylight/protocol/bgp/linkstate/attribute/NodeAttributesParser.java
+++ b/bgp/linkstate/src/main/java/org/opendaylight/protocol/bgp/linkstate/attribute/NodeAttributesParser.java
@@ -17,6 +17,7 @@ import java.util.BitSet;
 import java.util.List;
 import java.util.Map.Entry;
 import org.opendaylight.protocol.bgp.linkstate.TlvUtil;
+import org.opendaylight.protocol.bgp.linkstate.attribute.sr.SrNodeAttributesParser;
 import org.opendaylight.protocol.util.ByteArray;
 import org.opendaylight.protocol.util.Ipv4Util;
 import org.opendaylight.protocol.util.Ipv6Util;
@@ -25,11 +26,14 @@ import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.link
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.IsisAreaIdentifier;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.NodeFlagBits;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.TopologyIdentifier;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.node.state.SrAlgorithm;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.node.state.SrCapabilities;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.update.path.attributes.linkstate.path.attribute.LinkStateAttribute;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.update.path.attributes.linkstate.path.attribute.link.state.attribute.NodeAttributesCase;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.update.path.attributes.linkstate.path.attribute.link.state.attribute.NodeAttributesCaseBuilder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.update.path.attributes.linkstate.path.attribute.link.state.attribute.node.attributes._case.NodeAttributes;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.update.path.attributes.linkstate.path.attribute.link.state.attribute.node.attributes._case.NodeAttributesBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.rev150206.SidLabelBinding;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -49,6 +53,11 @@ final class NodeAttributesParser {
     private static final int DYNAMIC_HOSTNAME = 1026;
     private static final int ISIS_AREA_IDENTIFIER = 1027;
 
+    /* Segment routing TLVs */
+    private static final int SID_LABEL_BINDING = 1033;
+    private static final int SR_CAPABILITIES = 1034;
+    private static final int SR_ALGORITHMS = 1035;
+
     /**
      * Parse Node Attributes.
      *
@@ -101,6 +110,21 @@ final class NodeAttributesParser {
                 builder.setIpv6RouterId(ip6);
                 LOG.debug("Parsed IPv6 Router Identifier {}", ip6);
                 break;
+            case SID_LABEL_BINDING:
+                final SidLabelBinding label = SrNodeAttributesParser.parseSidLabelBinding(value);
+                // builder.set
+                LOG.debug("Parsed SID Label Binding {}", label);
+                break;
+            case SR_CAPABILITIES:
+                final SrCapabilities caps = SrNodeAttributesParser.parseSrCapabilities(value);
+                builder.setSrCapabilities(caps);
+                LOG.debug("Parsed SR Capabilities {}", caps);
+                break;
+            case SR_ALGORITHMS:
+                final SrAlgorithm algs = SrNodeAttributesParser.parseSrAlgorithms(value);
+                builder.setSrAlgorithm(algs);
+                LOG.debug("Parsed SR Algorithms {}", algs);
+                break;
             default:
                 LOG.warn("TLV {} is not a valid node attribute, ignoring it", key);
             }

diff --git a/bgp/linkstate/src/main/java/org/opendaylight/protocol/bgp/linkstate/attribute/sr/SrNodeAttributesParser.java b/bgp/linkstate/src/main/java/org/opendaylight/protocol/bgp/linkstate/attribute/sr/SrNodeAttributesParser.java
new file mode 100644 (file)
index 0000000..fa12f1a
--- /dev/null
+++ b/bgp/linkstate/src/main/java/org/opendaylight/protocol/bgp/linkstate/attribute/sr/SrNodeAttributesParser.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2015 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.linkstate.attribute.sr;
+
+import com.google.common.primitives.UnsignedBytes;
+import io.netty.buffer.ByteBuf;
+import java.util.ArrayList;
+import java.util.BitSet;
+import java.util.List;
+import org.opendaylight.protocol.util.ByteArray;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.node.state.SrAlgorithm;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.node.state.SrAlgorithmBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.node.state.SrCapabilities;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.node.state.SrCapabilitiesBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.node.state.SrSidLabel;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.rev150206.Algorithm;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.rev150206.SidLabel;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.rev150206.SrCapabilities.Flags;
+
+public final class SrNodeAttributesParser {
+
+    private static final int FLAGS_SIZE = 1;
+
+    private static final int SID_TLV_TYPE = 1;
+
+    /* SR Capabilities flags */
+    private static final int IPV4 = 7;
+    private static final int IPV6 = 6;
+
+    public static SrSidLabel parseSidLabelBinding(final ByteBuf buffer) {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    public static SrCapabilities parseSrCapabilities(final ByteBuf buffer) {
+        final SrCapabilitiesBuilder builder = new SrCapabilitiesBuilder();
+        final BitSet flags = BitSet.valueOf(ByteArray.readBytes(buffer, FLAGS_SIZE));
+        builder.setFlags(new Flags(flags.get(IPV4), flags.get(IPV6)));
+        builder.setValueRange((long)buffer.readUnsignedMedium());
+        buffer.skipBytes(2);
+        builder.setSid(new SidLabel(ByteArray.readAllBytes(buffer)));
+        return builder.build();
+    }
+
+    public static void serializeSrCapabilities(final SrCapabilities caps, final ByteBuf buffer) {
+        final Flags flags = caps.getFlags();
+        final BitSet bs = new BitSet(FLAGS_SIZE);
+        if (flags.isIpv4() != null) {
+            bs.set(IPV4, flags.isIpv4());
+        }
+        if (flags.isIpv6() != null) {
+            bs.set(IPV6, flags.isIpv6());
+        }
+        buffer.writeBytes(bs.toByteArray());
+        buffer.writeMedium(caps.getValueRange().intValue());
+        buffer.writeByte(SID_TLV_TYPE);
+        final byte[] sid = caps.getSid().getValue();
+        buffer.writeByte(sid.length);
+        buffer.writeBytes(sid);
+    }
+
+    public static SrAlgorithm parseSrAlgorithms(final ByteBuf buffer) {
+        final SrAlgorithmBuilder builder = new SrAlgorithmBuilder();
+        final List<Algorithm> algs = new ArrayList<>();
+        while (buffer.isReadable()) {
+            algs.add(Algorithm.forValue(UnsignedBytes.toInt(buffer.readByte())));
+        }
+        builder.setAlgorithm(algs);
+        return builder.build();
+    }
+
+    public static void serializeSrAlgorithms(final SrAlgorithm alg, final ByteBuf buffer) {
+        if (alg.getAlgorithm() != null) {
+            for (final Algorithm a : alg.getAlgorithm()) {
+                buffer.writeByte(a.getIntValue());
+            }
+        }
+    }
+}

diff --git a/bgp/linkstate/src/test/java/org/opendaylight/protocol/bgp/linkstate/SrAttributeParserTest.java b/bgp/linkstate/src/test/java/org/opendaylight/protocol/bgp/linkstate/SrAttributeParserTest.java
new file mode 100644 (file)
index 0000000..dd26946
--- /dev/null
+++ b/bgp/linkstate/src/test/java/org/opendaylight/protocol/bgp/linkstate/SrAttributeParserTest.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2015 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.linkstate;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+
+import com.google.common.collect.Lists;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import java.util.Collections;
+import org.junit.Test;
+import org.opendaylight.protocol.bgp.linkstate.attribute.sr.SrNodeAttributesParser;
+import org.opendaylight.protocol.util.ByteArray;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.node.state.SrAlgorithm;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.node.state.SrAlgorithmBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.node.state.SrCapabilities;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.node.state.SrCapabilitiesBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.rev150206.Algorithm;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.rev150206.SidLabel;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.rev150206.SrCapabilities.Flags;
+
+public class SrAttributeParserTest {
+
+    @Test
+    public void testSrAlgorithm() {
+        final byte[] bytes = { 0 };
+        final SrAlgorithm alg = new SrAlgorithmBuilder().setAlgorithm(Lists.newArrayList(Algorithm.ShortestPathFirst)).build();
+        final SrAlgorithm empty = new SrAlgorithmBuilder().setAlgorithm(Collections.<Algorithm>emptyList()).build();
+        assertEquals(alg, SrNodeAttributesParser.parseSrAlgorithms(Unpooled.wrappedBuffer(bytes)));
+        final ByteBuf b = Unpooled.buffer();
+        assertEquals(empty, SrNodeAttributesParser.parseSrAlgorithms(b));
+        SrNodeAttributesParser.serializeSrAlgorithms(alg, b);
+        assertArrayEquals(bytes, ByteArray.readAllBytes(b));
+
+        b.clear();
+        SrNodeAttributesParser.serializeSrAlgorithms(empty, b);
+        assertEquals(0, b.readableBytes());
+    }
+
+    @Test
+    public void testSrCapabilities() {
+        final byte[] bytes = { (byte)0xC0, 0, 0, 10, 1, 4, 1, 2, 3, 4 };
+        final SrCapabilities caps = new SrCapabilitiesBuilder().setFlags(new Flags(Boolean.TRUE, Boolean.TRUE)).setSid(new SidLabel(new byte[] {1,2,3,4})).setValueRange((long) 10).build();
+        assertEquals(caps, SrNodeAttributesParser.parseSrCapabilities(Unpooled.wrappedBuffer(bytes)));
+        final ByteBuf b = Unpooled.buffer();
+        SrNodeAttributesParser.serializeSrCapabilities(caps, b);
+        assertArrayEquals(bytes, ByteArray.readAllBytes(b));
+    }
+}