[Emu][onos-2603] - Implement LinkState Link attributes-Route Tag
Change-Id: I75727ed7b62e6803245e6ff5f7a5665b6bd535ff
diff --git a/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpPrefixAttrRouteTag.java b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpPrefixAttrRouteTag.java
new file mode 100755
index 0000000..0cf0238
--- /dev/null
+++ b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpPrefixAttrRouteTag.java
@@ -0,0 +1,125 @@
+/*
+ * 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.Arrays;
+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 tag attribute.
+ */
+public class BgpPrefixAttrRouteTag implements BGPValueType {
+
+ protected static final Logger log = LoggerFactory
+ .getLogger(BgpPrefixAttrRouteTag.class);
+
+ public static final int ATTR_PREFIX_ROUTETAG = 1153;
+
+ /* Prefix Route Tag */
+ private int[] pfxRouteTag;
+
+ /**
+ * Constructor to initialize the values.
+ *
+ * @param pfxRouteTag prefix route tag
+ */
+ BgpPrefixAttrRouteTag(int[] pfxRouteTag) {
+ this.pfxRouteTag = Arrays.copyOf(pfxRouteTag, pfxRouteTag.length);
+ }
+
+ /**
+ * Reads the Route Tag.
+ *
+ * @param cb ChannelBuffer
+ * @return object of BgpPrefixAttrRouteTag
+ * @throws BGPParseException while parsing BgpPrefixAttrRouteTag
+ */
+ public static BgpPrefixAttrRouteTag read(ChannelBuffer cb)
+ throws BGPParseException {
+ int[] pfxRouteTag;
+
+ short lsAttrLength = cb.readShort();
+ int len = lsAttrLength / Integer.SIZE;
+
+ if (cb.readableBytes() < lsAttrLength) {
+ Validation.validateLen(BGPErrorType.UPDATE_MESSAGE_ERROR,
+ BGPErrorType.ATTRIBUTE_LENGTH_ERROR,
+ lsAttrLength);
+ }
+
+ pfxRouteTag = new int[lsAttrLength];
+
+ for (int i = 0; i < len; i++) {
+ pfxRouteTag[i] = cb.readInt();
+ }
+
+ return new BgpPrefixAttrRouteTag(pfxRouteTag);
+ }
+
+ /**
+ * Returns the prefix route tag.
+ *
+ * @return route tag
+ */
+ int[] getPfxRouteTag() {
+ return pfxRouteTag;
+ }
+
+ @Override
+ public short getType() {
+ return ATTR_PREFIX_ROUTETAG;
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(pfxRouteTag);
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+
+ if (obj instanceof BgpPrefixAttrRouteTag) {
+ BgpPrefixAttrRouteTag other = (BgpPrefixAttrRouteTag) obj;
+ return Objects.equals(pfxRouteTag, other.pfxRouteTag);
+ }
+ 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("pfxRouteTag", pfxRouteTag).toString();
+ }
+}