BUG-5766: BGP Link Bandwidth Extended Community

[bgpcep.git] / bgp / parser-impl / src / main / java / org / opendaylight / protocol / bgp / parser / impl / message / update / extended / communities / LinkBandwidthEC.java

diff --git a/bgp/parser-impl/src/main/java/org/opendaylight/protocol/bgp/parser/impl/message/update/extended/communities/LinkBandwidthEC.java b/bgp/parser-impl/src/main/java/org/opendaylight/protocol/bgp/parser/impl/message/update/extended/communities/LinkBandwidthEC.java
new file mode 100644 (file)
index 0000000..b08fe83
--- /dev/null
+++ b/bgp/parser-impl/src/main/java/org/opendaylight/protocol/bgp/parser/impl/message/update/extended/communities/LinkBandwidthEC.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 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.parser.impl.message.update.extended.communities;
+
+import static org.opendaylight.protocol.bgp.parser.impl.message.BGPOpenMessageParser.AS_TRANS;
+
+import com.google.common.base.Preconditions;
+import io.netty.buffer.ByteBuf;
+import org.opendaylight.protocol.bgp.parser.BGPDocumentedException;
+import org.opendaylight.protocol.bgp.parser.BGPParsingException;
+import org.opendaylight.protocol.bgp.parser.spi.extended.community.ExtendedCommunityParser;
+import org.opendaylight.protocol.bgp.parser.spi.extended.community.ExtendedCommunitySerializer;
+import org.opendaylight.protocol.util.ByteArray;
+import org.opendaylight.protocol.util.ByteBufWriteUtil;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.extended.community.ExtendedCommunity;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.extended.community.extended.community.LinkBandwidthCase;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.extended.community.extended.community.LinkBandwidthCaseBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.extended.community.extended.community.link.bandwidth._case.LinkBandwidthExtendedCommunity;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.extended.community.extended.community.link.bandwidth._case.LinkBandwidthExtendedCommunityBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.network.concepts.rev131125.Bandwidth;
+
+public class LinkBandwidthEC implements ExtendedCommunityParser, ExtendedCommunitySerializer {
+    private static final int TYPE = 64;
+    private static final int SUBTYPE = 4;
+    private static final int BANDWIDTH_SIZE = 4;
+    private static final int AS_TRANS_LENGTH = 2;
+
+    @Override
+    public ExtendedCommunity parseExtendedCommunity(final ByteBuf buffer) throws BGPDocumentedException, BGPParsingException {
+        buffer.skipBytes(AS_TRANS_LENGTH);
+        final LinkBandwidthExtendedCommunity lb = new LinkBandwidthExtendedCommunityBuilder()
+            .setBandwidth(new Bandwidth(ByteArray.readBytes(buffer, BANDWIDTH_SIZE)))
+            .build();
+        return new LinkBandwidthCaseBuilder().setLinkBandwidthExtendedCommunity(lb).build();
+    }
+
+    @Override
+    public void serializeExtendedCommunity(final ExtendedCommunity extendedCommunity, final ByteBuf body) {
+        Preconditions.checkArgument(extendedCommunity instanceof LinkBandwidthCase,
+            "The extended community %s is not LinkBandwidthCase type.", extendedCommunity);
+        final LinkBandwidthExtendedCommunity lb = ((LinkBandwidthCase) extendedCommunity).getLinkBandwidthExtendedCommunity();
+        body.writeShort(AS_TRANS);
+        ByteBufWriteUtil.writeFloat32(lb.getBandwidth(), body);
+    }
+
+    @Override
+    public int getType(final boolean isTransitive) {
+        return TYPE;
+    }
+
+    @Override
+    public int getSubType() {
+        return SUBTYPE;
+    }
+}