[Emu][onos-2603] - Implement LinkState attributes Router ID

Change-Id: Ie6be0f01a61b66063b11c8cac4c824fba4f4a2a3

+/*
+ * 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.bgpio.types.attr;
+
+import java.util.Objects;
+
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.onlab.packet.Ip4Address;
+import org.onosproject.bgpio.exceptions.BGPParseException;
+import org.onosproject.bgpio.types.BGPErrorType;
+import org.onosproject.bgpio.types.BGPValueType;
+import org.onosproject.bgpio.util.Validation;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.base.MoreObjects;
+
+/**
+ * Implements BGP attribute node router ID.
+ */
+public class BgpAttrRouterIdV4 implements BGPValueType {
+
+    protected static final Logger log = LoggerFactory
+            .getLogger(BgpAttrRouterIdV4.class);
+
+    public short sType;
+
+    /* IPv4 Router-ID of Node */
+    private Ip4Address ip4RouterId;
+
+    /**
+     * Constructor to initialize the value.
+     *
+     * @param ip4RouterId IPV4 address of router
+     * @param sType TLV type
+     */
+    BgpAttrRouterIdV4(Ip4Address ip4RouterId, short sType) {
+        this.ip4RouterId = ip4RouterId;
+        this.sType = sType;
+    }
+
+    /**
+     * Reads the IPv4 Router-ID.
+     *
+     * @param cb ChannelBuffer
+     * @return object of BgpAttrRouterIdV4
+     * @throws BGPParseException while parsing BgpAttrNodeRouterId
+     */
+    public static BgpAttrRouterIdV4 read(ChannelBuffer cb, short sType)
+            throws BGPParseException {
+        byte[] ipBytes;
+        Ip4Address ip4RouterId;
+
+        short lsAttrLength = cb.readShort();
+
+        if (4 != lsAttrLength) {
+            Validation.validateLen(BGPErrorType.UPDATE_MESSAGE_ERROR,
+                                   BGPErrorType.ATTRIBUTE_LENGTH_ERROR,
+                                   lsAttrLength);
+        }
+
+        ipBytes = new byte[lsAttrLength];
+        cb.readBytes(ipBytes);
+        ip4RouterId = Ip4Address.valueOf(ipBytes);
+        return new BgpAttrRouterIdV4(ip4RouterId, sType);
+    }
+
+    /**
+     * Returns the IPV4 router ID.
+     *
+     * @return Router ID
+     */
+    Ip4Address getAttrRouterId() {
+        return ip4RouterId;
+    }
+
+    @Override
+    public short getType() {
+        return sType;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(ip4RouterId);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+
+        if (obj instanceof BgpAttrRouterIdV4) {
+            BgpAttrRouterIdV4 other = (BgpAttrRouterIdV4) obj;
+            return Objects.equals(ip4RouterId, other.ip4RouterId);
+        }
+        return false;
+    }
+
+    @Override
+    public int write(ChannelBuffer cb) {
+        // TODO Auto-generated method stub
+        return 0;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass()).omitNullValues()
+                .add("ip4RouterId", ip4RouterId).toString();
+    }
+}

+/*
+ * 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.bgpio.types.attr;
+
+import java.util.Objects;
+
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.onlab.packet.Ip6Address;
+import org.onosproject.bgpio.exceptions.BGPParseException;
+import org.onosproject.bgpio.types.BGPErrorType;
+import org.onosproject.bgpio.types.BGPValueType;
+import org.onosproject.bgpio.util.Validation;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.base.MoreObjects;
+
+/**
+ * Implements BGP attribute IPv6 router ID.
+ */
+public class BgpAttrRouterIdV6 implements BGPValueType {
+
+    protected static final Logger log = LoggerFactory
+            .getLogger(BgpAttrRouterIdV6.class);
+
+    public short sType;
+
+    /* IPv4 Router-ID of Node */
+    private Ip6Address ip6RouterId;
+
+    /**
+     * Constructor to initialize the value.
+     *
+     * @param ip6RouterId IPV6 address of the router ID
+     * @param sType TLV type
+     */
+    BgpAttrRouterIdV6(Ip6Address ip6RouterId, short sType) {
+        this.ip6RouterId = ip6RouterId;
+        this.sType = sType;
+    }
+
+    /**
+     * Reads the IPv6 Router-ID.
+     *
+     * @param cb ChannelBuffer
+     * @return object of BgpAttrRouterIdV6
+     * @throws BGPParseException while parsing BgpAttrRouterIdV6
+     */
+    public static BgpAttrRouterIdV6 read(ChannelBuffer cb, short sType)
+            throws BGPParseException {
+        byte[] ipBytes;
+        Ip6Address ip6RouterId;
+
+        short lsAttrLength = cb.readShort();
+
+        if (16 != lsAttrLength) {
+            Validation.validateLen(BGPErrorType.UPDATE_MESSAGE_ERROR,
+                                   BGPErrorType.ATTRIBUTE_LENGTH_ERROR,
+                                   lsAttrLength);
+        }
+
+        ipBytes = new byte[lsAttrLength];
+        cb.readBytes(ipBytes);
+        ip6RouterId = Ip6Address.valueOf(ipBytes);
+        return new BgpAttrRouterIdV6(ip6RouterId, sType);
+    }
+
+    /**
+     * Returns IPV6 router ID.
+     *
+     * @return Router ID
+     */
+    Ip6Address getAttrRouterId() {
+        return ip6RouterId;
+    }
+
+    @Override
+    public short getType() {
+        return sType;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(ip6RouterId);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+
+        if (obj instanceof BgpAttrRouterIdV6) {
+            BgpAttrRouterIdV6 other = (BgpAttrRouterIdV6) obj;
+            return Objects.equals(ip6RouterId, other.ip6RouterId);
+        }
+        return false;
+    }
+
+    @Override
+    public int write(ChannelBuffer cb) {
+        // TODO Auto-generated method stub
+        return 0;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass()).omitNullValues()
+                .add("ip6RouterId", ip6RouterId).toString();
+    }
+}