Implementation of PcInitate and PcUpdate messages
Change-Id: I746a5860a8b4a8022d747a02075ed3237741c53a
diff --git a/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/IPv6SubObject.java b/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/IPv6SubObject.java
new file mode 100644
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--- /dev/null
+++ b/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/IPv6SubObject.java
@@ -0,0 +1,228 @@
+/*
+ * 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;
+
+/**
+ * Provides IPv6 Sub Object.
+ */
+public class IPv6SubObject implements PcepValueType {
+
+ /* reference :RFC 4874.
+ Subobject : IPv6 address
+
+ 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 | Length | IPv6 address (16 bytes) |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ | IPv6 address (continued) |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ | IPv6 address (continued) |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ | IPv6 address (continued) |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ | IPv6 address (continued) | Prefix Length | Flags |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+ Type
+
+ 0x02 IPv6 address
+
+ Length
+
+ The Length contains the total length of the subobject in bytes,
+ including the Type and Length fields. The Length is always 20.
+
+ IPv6 address
+
+ A 128-bit unicast host address.
+
+ Prefix length
+
+ 128
+
+ Flags
+
+ 0x01 Local protection available
+
+ Indicates that the link downstream of this node is
+ protected via a local repair mechanism. This flag can
+ only be set if the Local protection flag was set in the
+ SESSION_ATTRIBUTE object of the corresponding Path
+ message.
+
+ 0x02 Local protection in use
+
+ Indicates that a local repair mechanism is in use to
+ maintain this tunnel (usually in the face of an outage
+ of the link it was previously routed over).
+ */
+ protected static final Logger log = LoggerFactory.getLogger(IPv6SubObject.class);
+
+ public static final short TYPE = 0x02;
+ public static final short LENGTH = 20;
+ public static final byte VALUE_LENGTH = 18;
+
+ 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 IPv6SubObject NONE = new IPv6SubObject(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 IPv6SubObject NO_MASK = new IPv6SubObject(NO_MASK_VAL);
+ public static final IPv6SubObject FULL_MASK = NONE;
+
+ private final byte[] rawValue;
+
+ /**
+ * constructor to initialize rawValue with ipv6 address.
+ *
+ * @param rawValue ipv6 address
+ */
+ public IPv6SubObject(byte[] rawValue) {
+ this.rawValue = rawValue;
+ }
+
+ /**
+ * To create instance of IPv6SubObject.
+ *
+ * @param raw byte array of ipv6 address
+ * @return object of IPv6SubObject
+ */
+ public static IPv6SubObject of(final byte[] raw) {
+ //check NONE_VAL
+ boolean bFoundNONE = true;
+ //value starts from 3rd byte.
+ for (int i = 2; 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 = 2; i < 20; ++i) {
+ if (0xFF != raw[i]) {
+ bFoundNoMask = false;
+ }
+ }
+ if (bFoundNoMask) {
+ return NO_MASK;
+ }
+
+ return new IPv6SubObject(raw);
+ }
+
+ /**
+ * Returns value of IPv6 Sub Object.
+ *
+ * @return byte array of ipv6 address
+ */
+ public byte[] getValue() {
+ 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 IPv6SubObject) {
+ IPv6SubObject other = (IPv6SubObject) obj;
+ return Objects.equals(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 IPv6SubObject.
+ *
+ * @param c type of channel buffer
+ * @return object of IPv6SubObject
+ */
+ public static IPv6SubObject read20Bytes(ChannelBuffer c) {
+ byte[] yTemp = new byte[20];
+ c.readBytes(yTemp, 0, 20);
+ return IPv6SubObject.of(yTemp);
+ }
+
+ @Override
+ public void print() {
+ log.debug("IPv6SubObject");
+ log.debug("Type: ", TYPE);
+ log.debug("Length: ", LENGTH);
+ if (null != rawValue) {
+ StringBuffer result = new StringBuffer();
+ for (byte b : rawValue) {
+ result.append(String.format("%02X ", b));
+ }
+ log.debug(result.toString());
+ }
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .add("Type", TYPE)
+ .add("Length", LENGTH)
+ .add("IPv6 Address", rawValue)
+ .toString();
+ }
+}