Bug-2225 Update PCEP segment routing according draft version 00.

[bgpcep.git] / pcep / segment-routing / src / main / java / org / opendaylight / protocol / pcep / segment / routing / SrPceCapabilityTlvParser.java

diff --git a/pcep/segment-routing/src/main/java/org/opendaylight/protocol/pcep/segment/routing/SrPceCapabilityTlvParser.java b/pcep/segment-routing/src/main/java/org/opendaylight/protocol/pcep/segment/routing/SrPceCapabilityTlvParser.java
new file mode 100644 (file)
index 0000000..e6887cd
--- /dev/null
+++ b/pcep/segment-routing/src/main/java/org/opendaylight/protocol/pcep/segment/routing/SrPceCapabilityTlvParser.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2014 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.pcep.segment.routing;
+
+import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeUnsignedByte;
+
+import com.google.common.base.Preconditions;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
+import org.opendaylight.protocol.pcep.spi.TlvParser;
+import org.opendaylight.protocol.pcep.spi.TlvSerializer;
+import org.opendaylight.protocol.pcep.spi.TlvUtil;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.segment.routing.rev150112.sr.pce.capability.tlv.SrPceCapability;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.segment.routing.rev150112.sr.pce.capability.tlv.SrPceCapabilityBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
+
+public class SrPceCapabilityTlvParser implements TlvParser, TlvSerializer {
+
+    public static final int TYPE = 26;
+
+    private static final int MSD_LENGTH = 1;
+    private static final int CONTENT_LENGTH = 4;
+    private static final int OFFSET = CONTENT_LENGTH - MSD_LENGTH;
+
+    @Override
+    public void serializeTlv(final Tlv tlv, final ByteBuf buffer) {
+        Preconditions.checkArgument(tlv instanceof SrPceCapability, "SrPceCapability is mandatory.");
+        final ByteBuf body = Unpooled.buffer(CONTENT_LENGTH);
+        body.writerIndex(OFFSET);
+        writeUnsignedByte(((SrPceCapability) tlv).getMsd(), body);
+        TlvUtil.formatTlv(TYPE, body, buffer);
+    }
+
+    @Override
+    public Tlv parseTlv(final ByteBuf buffer) throws PCEPDeserializerException {
+        if (buffer == null) {
+            return null;
+        }
+        final short msd = buffer.readerIndex(OFFSET).readUnsignedByte();
+        return new SrPceCapabilityBuilder().setMsd(msd).build();
+    }
+}