PCEP modificaton to support PCEP-LS

Change-Id: Ic829dd17b0398ad76ec412b4e8293de564b5b56b
diff --git a/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/LinkLocalRemoteIdentifiersSubTlv.java b/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/LinkLocalRemoteIdentifiersSubTlv.java
new file mode 100644
index 0000000..336c884
--- /dev/null
+++ b/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/LinkLocalRemoteIdentifiersSubTlv.java
@@ -0,0 +1,155 @@
+/*
+ * 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 Local and remote Link Identifiers.
+ */
+public class LinkLocalRemoteIdentifiersSubTlv implements PcepValueType {
+
+    /* Reference :RFC5307
+     * 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=4      |             Length=8               |
+     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+     |               Link Local Identifier                           |
+     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+     |               Link Remote Identifier                          |
+     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+     */
+    protected static final Logger log = LoggerFactory.getLogger(LinkLocalRemoteIdentifiersSubTlv.class);
+
+    public static final short TYPE = 6;
+    public static final short LENGTH = 8;
+    private final int iLinkLocalIdentifier;
+    private final int iLinkRemoteIdentifier;
+
+    /**
+     * Constructor to initialize iLinkLocalIdentifier , iLinkRemoteIdentifier.
+     *
+     * @param iLinkLocalIdentifier Link Local identifier
+     * @param iLinkRemoteIdentifier Link Remote identifier
+     */
+    public LinkLocalRemoteIdentifiersSubTlv(int iLinkLocalIdentifier, int iLinkRemoteIdentifier) {
+        this.iLinkLocalIdentifier = iLinkLocalIdentifier;
+        this.iLinkRemoteIdentifier = iLinkRemoteIdentifier;
+    }
+
+    /**
+     * Retruns an object of Link Local Remote Identifiers Tlv.
+     *
+     * @param iLinkLocalIdentifier Link Local identifier
+     * @param iLinkRemoteIdentifier Link Remote identifier
+     * @return object of LinkLocalRemoteIdentifiersTlv
+     */
+    public static LinkLocalRemoteIdentifiersSubTlv of(int iLinkLocalIdentifier, int iLinkRemoteIdentifier) {
+        return new LinkLocalRemoteIdentifiersSubTlv(iLinkLocalIdentifier, iLinkRemoteIdentifier);
+    }
+
+    /**
+     * Returns Link-Local-Identifier.
+     *
+     * @return iLinkLocalIdentifier Link Local Identifier
+     */
+    public int getLinkLocalIdentifier() {
+        return iLinkLocalIdentifier;
+    }
+
+    /**
+     * Returns Link-Remote-Identifier.
+     *
+     * @return iLinkRemoteIdentifier Link Remote Identifier.
+     */
+    public int getLinkRemoteIdentifier() {
+        return iLinkRemoteIdentifier;
+    }
+
+    @Override
+    public PcepVersion getVersion() {
+        return PcepVersion.PCEP_1;
+    }
+
+    @Override
+    public short getLength() {
+        return LENGTH;
+    }
+
+    @Override
+    public short getType() {
+        return TYPE;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(iLinkLocalIdentifier, iLinkRemoteIdentifier);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof LinkLocalRemoteIdentifiersSubTlv) {
+            LinkLocalRemoteIdentifiersSubTlv other = (LinkLocalRemoteIdentifiersSubTlv) obj;
+            return Objects.equals(iLinkLocalIdentifier, other.iLinkLocalIdentifier)
+                    && Objects.equals(iLinkRemoteIdentifier, other.iLinkRemoteIdentifier);
+        }
+        return false;
+    }
+
+    @Override
+    public int write(ChannelBuffer c) {
+        int iStartIndex = c.writerIndex();
+        c.writeShort(TYPE);
+        c.writeShort(LENGTH);
+        c.writeInt(iLinkLocalIdentifier);
+        c.writeInt(iLinkRemoteIdentifier);
+        return c.writerIndex() - iStartIndex;
+    }
+
+    /**
+     * Reads the channel buffer and returns object of LinkLocalRemoteIdentifiersTlv.
+     *
+     * @param c input channel buffer
+     * @return object of LinkLocalRemoteIdentifiersTlv
+     */
+    public static PcepValueType read(ChannelBuffer c) {
+        int iLinkLocalIdentifier = c.readInt();
+        int iLinkRemoteIdentifier = c.readInt();
+        return new LinkLocalRemoteIdentifiersSubTlv(iLinkLocalIdentifier, iLinkRemoteIdentifier);
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass())
+                .add("Type", TYPE)
+                .add("Length", LENGTH)
+                .add("LinkLocalIdentifier", iLinkLocalIdentifier)
+                .add("LinkRemoteIdentifier", iLinkRemoteIdentifier)
+                .toString();
+    }
+}