Implementation of PcInitate and PcUpdate messages
Change-Id: I746a5860a8b4a8022d747a02075ed3237741c53a
diff --git a/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/IPv4SubObject.java b/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/IPv4SubObject.java
new file mode 100644
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--- /dev/null
+++ b/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/IPv4SubObject.java
@@ -0,0 +1,189 @@
+/*
+ * 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.
+ */
+
+/**
+ * @author b00295750
+ *
+ */
+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 IPv4 Sub Object.
+ */
+public class IPv4SubObject implements PcepValueType {
+
+ /*Reference : RFC 4874:3.1.1
+ * 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
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ |L| Type | Length | IPv4 address (4 bytes) |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ | IPv4 address (continued) | Prefix Length | Resvd |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+ protected static final Logger log = LoggerFactory.getLogger(IPv4SubObject.class);
+
+ public static final byte TYPE = 0x01;
+ public static final byte LENGTH = 8;
+ public static final byte VALUE_LENGTH = 6;
+ public static final byte OBJ_LENGTH = 8;
+ public static final byte LBIT = 0;
+ public static final int SHIFT_LBIT_POSITION = 7;
+ private int ipAddress;
+ private byte prefixLen;
+ private byte resvd;
+
+ /**
+ * Constructor to initialize ipv4 address.
+ *
+ * @param ipAddr ipv4 address
+ */
+ public IPv4SubObject(int ipAddr) {
+ this.ipAddress = ipAddr;
+ }
+
+ /**
+ * constructor to initialize ipAddress, prefixLen and resvd.
+ *
+ * @param ipAddress ipv4 address
+ * @param prefixLen prefix length
+ * @param resvd reserved flags value
+ */
+ public IPv4SubObject(int ipAddress, byte prefixLen, byte resvd) {
+ this.ipAddress = ipAddress;
+ this.prefixLen = prefixLen;
+ this.resvd = resvd;
+ }
+
+ /**
+ * Returns a new instance of IPv4SubObject.
+ *
+ * @param ipAddress ipv4 address
+ * @param prefixLen prefix length
+ * @param resvd reserved flags value
+ * @return object of IPv4SubObject
+ */
+ public static IPv4SubObject of(int ipAddress, byte prefixLen, byte resvd) {
+ return new IPv4SubObject(ipAddress, prefixLen, resvd);
+ }
+
+ /**
+ * Returns prefixLen of IPv4 IP address.
+ *
+ * @return byte value of rawValue
+ */
+ public byte getPrefixLen() {
+ return prefixLen;
+ }
+
+ /**
+ * Returns value of IPv4 IP address.
+ *
+ * @return int value of ipv4 address
+ */
+ public int getIpAddress() {
+ return ipAddress;
+ }
+
+ @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(ipAddress, prefixLen, resvd);
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+ if (obj instanceof IPv4SubObject) {
+ IPv4SubObject other = (IPv4SubObject) obj;
+ return Objects.equals(this.ipAddress, other.ipAddress) && Objects.equals(this.prefixLen, other.prefixLen)
+ && Objects.equals(this.resvd, other.resvd);
+ }
+ return false;
+ }
+
+ /**
+ * Reads the channel buffer and returns object of IPv4SubObject.
+ *
+ * @param c type of channel buffer
+ * @return object of IPv4SubObject
+ */
+ public static PcepValueType read(ChannelBuffer c) {
+ int ipAddess = c.readInt();
+ byte prefixLen = c.readByte();
+ byte resvd = c.readByte();
+ return new IPv4SubObject(ipAddess, prefixLen, resvd);
+ }
+
+ @Override
+ public int write(ChannelBuffer c) {
+ int iLenStartIndex = c.writerIndex();
+ byte bValue = LBIT;
+ bValue = (byte) (bValue << SHIFT_LBIT_POSITION);
+ bValue = (byte) (bValue | TYPE);
+ c.writeByte(bValue);
+ c.writeByte(OBJ_LENGTH);
+ c.writeInt(ipAddress);
+ c.writeByte(prefixLen);
+ c.writeByte(resvd);
+
+ return c.writerIndex() - iLenStartIndex;
+ }
+
+ @Override
+ public void print() {
+ log.debug("IPv4SubObject");
+ log.debug("Type: " + TYPE);
+ log.debug("Length: " + LENGTH);
+ log.debug("IPv4 address: " + String.format("%08X", ipAddress));
+ log.debug("Prefix Length: " + prefixLen);
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .add("Type", TYPE)
+ .add("Length", LENGTH)
+ .add("IPv4 Address", ipAddress)
+ .add("Prefix Length", prefixLen)
+ .toString();
+ }
+}