[ONOS-2356] Implementation for PCEP label update message.
Change-Id: I510a9a7c7c868da1fc3d6e2625501f094faf8115
diff --git a/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/NexthopIPv4addressTlv.java b/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/NexthopIPv4addressTlv.java
new file mode 100644
index 0000000..2306dcc
--- /dev/null
+++ b/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/NexthopIPv4addressTlv.java
@@ -0,0 +1,143 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.pcepio.types;
+
+import java.util.Objects;
+
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.onosproject.pcepio.protocol.PcepVersion;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.base.MoreObjects;
+
+/**
+ * NexthopIPv6addressTlv provides Ipv4 address of next hop.
+ */
+public class NexthopIPv4addressTlv implements PcepValueType {
+
+ /*
+ Reference :draft-zhao-pce-pcep-extension-for-pce-controller-01
+
+ 0 1 2 3
+ 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ | Type=TBD | Length = 8 |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ | nexthop IPv4 address |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+ NEXTHOP-IPV4-ADDRESS TLV
+
+ */
+ protected static final Logger log = LoggerFactory.getLogger(NexthopIPv4addressTlv.class);
+
+ public static final short TYPE = 2; //to be defined
+ //Length is header + value
+ public static final short LENGTH = 8;
+ public static final short VALUE_LENGTH = 4;
+
+ private final int rawValue;
+
+ /**
+ * Constructor to initialize next hop IPv4 address.
+ *
+ * @param rawValue next hop IPv4 address
+ */
+ public NexthopIPv4addressTlv(int rawValue) {
+ this.rawValue = rawValue;
+ }
+
+ /**
+ * Return next hop IPv4 address tlv.
+ *
+ * @param raw of next hop IPv4 address
+ * @return object of NexthopIPv4addressTlv
+ */
+ public static NexthopIPv4addressTlv of(final int raw) {
+ return new NexthopIPv4addressTlv(raw);
+ }
+
+ /**
+ * Returns next hop IPv4 address.
+ *
+ * @return next hop IPv4 address
+ */
+ public int getInt() {
+ return rawValue;
+ }
+
+ @Override
+ public PcepVersion getVersion() {
+ return PcepVersion.PCEP_1;
+ }
+
+ @Override
+ public short getType() {
+ return TYPE;
+ }
+
+ @Override
+ public short getLength() {
+ return LENGTH;
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(rawValue);
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+ if (obj instanceof NexthopIPv4addressTlv) {
+ NexthopIPv4addressTlv other = (NexthopIPv4addressTlv) obj;
+ return Objects.equals(this.rawValue, other.rawValue);
+ }
+ return false;
+ }
+
+ @Override
+ public int write(ChannelBuffer c) {
+ int iStartIndex = c.writerIndex();
+ c.writeShort(TYPE);
+ c.writeShort(LENGTH);
+ c.writeInt(rawValue);
+ return c.writerIndex() - iStartIndex;
+ }
+
+ /**
+ * Reads the channel buffer and returns object of NexthopIPv4addressTlv.
+ *
+ * @param c type of channel buffer
+ * @return object of NexthopIPv4addressTlv
+ */
+ public static NexthopIPv4addressTlv read(ChannelBuffer c) {
+ return NexthopIPv4addressTlv.of(c.readInt());
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .add("Type", TYPE)
+ .add("Length", LENGTH)
+ .add("Ipv4Address ", rawValue)
+ .toString();
+ }
+}