[onos-2603] - Implement LinkState Link attributes-EXT Route Tag
Change-Id: Ieeab8f46b81e55c0dc4ec89e8578cc1f34602875
diff --git a/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpPrefixAttrExtRouteTag.java b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpPrefixAttrExtRouteTag.java
new file mode 100755
index 0000000..c5ac51b
--- /dev/null
+++ b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpPrefixAttrExtRouteTag.java
@@ -0,0 +1,139 @@
+/*
+ * 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 static com.google.common.base.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+import org.jboss.netty.buffer.ChannelBuffer;
+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 prefix route Extended tag attribute.
+ */
+public class BgpPrefixAttrExtRouteTag implements BGPValueType {
+
+ protected static final Logger log = LoggerFactory
+ .getLogger(BgpPrefixAttrExtRouteTag.class);
+
+ public static final int ATTR_PREFIX_EXTROUTETAG = 1154;
+ public static final int ATTR_PREFIX_EXT_LEN = 8;
+
+ /* Prefix Route Tag */
+ private List<Long> pfxExtRouteTag = new ArrayList<Long>();
+
+ /**
+ * Constructor to initialize the values.
+ *
+ * @param pfxExtRouteTag Extended route tag
+ */
+ public BgpPrefixAttrExtRouteTag(List<Long> pfxExtRouteTag) {
+ this.pfxExtRouteTag = checkNotNull(pfxExtRouteTag);
+ }
+
+ /**
+ * Returns object of this class with specified values.
+ *
+ * @param pfxExtRouteTag Prefix Metric
+ * @return object of BgpPrefixAttrMetric
+ */
+ public static BgpPrefixAttrExtRouteTag of(ArrayList<Long> pfxExtRouteTag) {
+ return new BgpPrefixAttrExtRouteTag(pfxExtRouteTag);
+ }
+
+ /**
+ * Reads the Extended Tag.
+ *
+ * @param cb ChannelBuffer
+ * @return object of BgpPrefixAttrExtRouteTag
+ * @throws BGPParseException while parsing BgpPrefixAttrExtRouteTag
+ */
+ public static BgpPrefixAttrExtRouteTag read(ChannelBuffer cb)
+ throws BGPParseException {
+ ArrayList<Long> pfxExtRouteTag = new ArrayList<Long>();
+ long temp;
+
+ short lsAttrLength = cb.readShort();
+ int len = lsAttrLength / ATTR_PREFIX_EXT_LEN;
+
+ if (cb.readableBytes() < lsAttrLength) {
+ Validation.validateLen(BGPErrorType.UPDATE_MESSAGE_ERROR,
+ BGPErrorType.ATTRIBUTE_LENGTH_ERROR,
+ lsAttrLength);
+ }
+
+ for (int i = 0; i < len; i++) {
+ temp = cb.readLong();
+ pfxExtRouteTag.add(new Long(temp));
+ }
+
+ return new BgpPrefixAttrExtRouteTag(pfxExtRouteTag);
+ }
+
+ /**
+ * Returns Extended route tag.
+ *
+ * @return route tag
+ */
+ public List<Long> pfxExtRouteTag() {
+ return pfxExtRouteTag;
+ }
+
+ @Override
+ public short getType() {
+ return ATTR_PREFIX_EXTROUTETAG;
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(pfxExtRouteTag);
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+
+ if (obj instanceof BgpPrefixAttrExtRouteTag) {
+ BgpPrefixAttrExtRouteTag other = (BgpPrefixAttrExtRouteTag) obj;
+ return Objects.equals(pfxExtRouteTag, other.pfxExtRouteTag);
+ }
+ return false;
+ }
+
+ @Override
+ public int write(ChannelBuffer cb) {
+ // TODO This will be implemented in the next version
+ return 0;
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass()).omitNullValues()
+ .add("pfxExtRouteTag", pfxExtRouteTag).toString();
+ }
+}