1 files changed, 180 insertions, 0 deletions
diff --git a/framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/IPv4SubObject.java b/framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/IPv4SubObject.java
new file mode 100644
index 00000000..031b5db6
--- /dev/null
+++ b/framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/IPv4SubObject.java
@@ -0,0 +1,180 @@
+/*
+ * 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 String toString() {
+        return MoreObjects.toStringHelper(getClass())
+                .add("Type", TYPE)
+                .add("Length", LENGTH)
+                .add("IPv4Address", ipAddress)
+                .add("PrefixLength", prefixLen)
+                .toString();
+    }
+}