[ONOS-2356] Implementation for PCEP label update message.
Change-Id: I510a9a7c7c868da1fc3d6e2625501f094faf8115
diff --git a/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/NexthopIPv6addressTlv.java b/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/NexthopIPv6addressTlv.java
new file mode 100644
index 0000000..9b39dd5
--- /dev/null
+++ b/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/NexthopIPv6addressTlv.java
@@ -0,0 +1,190 @@
+/*
+ * 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;
+import com.google.common.base.MoreObjects.ToStringHelper;
+
+/**
+ * NexthopIPv6addressTlv provides Ipv6 address of next hop.
+ */
+public class NexthopIPv6addressTlv 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 = 20 |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ | |
+ // nexthop IPv6 address (16 bytes) //
+ | |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+ NEXTHOP-IPV6-ADDRESS TLV:
+
+ */
+ protected static final Logger log = LoggerFactory.getLogger(NexthopIPv6addressTlv.class);
+
+ public static final short TYPE = 100; //to be defined
+ //Length is header + value
+ public static final short LENGTH = 20;
+ public static final short VALUE_LENGTH = 16;
+
+ private static final byte[] NONE_VAL = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+ public static final NexthopIPv6addressTlv NONE = new NexthopIPv6addressTlv(NONE_VAL);
+
+ private static final byte[] NO_MASK_VAL = {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
+ (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
+ (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF };
+ public static final NexthopIPv6addressTlv NO_MASK = new NexthopIPv6addressTlv(NO_MASK_VAL);
+ public static final NexthopIPv6addressTlv FULL_MASK = NONE;
+
+ private final byte[] rawValue;
+
+ /**
+ * Constructor to initialize IP address for next hop IPv6 address tlv.
+ *
+ * @param rawValue value of Next hop ipAddress
+ */
+ public NexthopIPv6addressTlv(byte[] rawValue) {
+ log.debug("NexthopIPv6addressTlv");
+ this.rawValue = rawValue;
+ }
+
+ /**
+ * Creates next hop IPv6 address tlv.
+ *
+ * @param raw value of Next hop ipAddress
+ * @return object of NexthopIPv6addressTlv
+ */
+ //logic to be checked
+ public static NexthopIPv6addressTlv of(final byte[] raw) {
+ //check NONE_VAL
+ boolean bFoundNONE = true;
+ //value starts from 3rd byte.
+ for (int i = 5; i < 20; ++i) {
+ if (NONE_VAL[i] != raw[i]) {
+ bFoundNONE = false;
+ }
+ }
+
+ if (bFoundNONE) {
+ return NONE;
+ }
+
+ //check NO_MASK_VAL
+ boolean bFoundNoMask = true;
+ //value starts from 3rd byte.
+ for (int i = 5; i < 20; ++i) {
+ if (0xFF != raw[i]) {
+ bFoundNoMask = false;
+ }
+ }
+ if (bFoundNoMask) {
+ return NO_MASK;
+ }
+ return new NexthopIPv6addressTlv(raw);
+ }
+
+ /**
+ * Returns next hop IPv6 address.
+ *
+ * @return next hop IPv6 address
+ */
+ public byte[] getBytes() {
+ 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 NexthopIPv6addressTlv) {
+ NexthopIPv6addressTlv other = (NexthopIPv6addressTlv) 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.writeBytes(rawValue);
+ return c.writerIndex() - iStartIndex;
+ }
+
+ /**
+ * Reads the channel buffer and returns object of NexthopIPv6addressTlv.
+ *
+ * @param c type of channel buffer
+ * @return object of NexthopIPv6addressTlv
+ */
+ public static NexthopIPv6addressTlv read(ChannelBuffer c) {
+ byte[] yTemp = new byte[20];
+ c.readBytes(yTemp, 0, 20);
+ return NexthopIPv6addressTlv.of(yTemp);
+ }
+
+ @Override
+ public String toString() {
+ ToStringHelper toStrHelper = MoreObjects.toStringHelper(getClass());
+
+ toStrHelper.add("Type", TYPE);
+ toStrHelper.add("Length", LENGTH);
+
+ StringBuffer result = new StringBuffer();
+ for (byte b : rawValue) {
+ result.append(String.format("%02X ", b));
+ }
+ toStrHelper.add("IpAddress", result);
+
+ return toStrHelper.toString();
+ }
+}