[Emu][onos-2603] - Implement LinkState Link attributes-Opaque Prefix Data
Change-Id: I79a4ee63afe2da8b3c2a660bfb24f99ed39eda2f
diff --git a/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpPrefixAttrOpaqueData.java b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpPrefixAttrOpaqueData.java
new file mode 100755
index 0000000..c7008ca
--- /dev/null
+++ b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpPrefixAttrOpaqueData.java
@@ -0,0 +1,134 @@
+/*
+ * 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 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 opaque data attribute.
+ */
+public final class BgpPrefixAttrOpaqueData implements BGPValueType {
+
+ protected static final Logger log = LoggerFactory
+ .getLogger(BgpPrefixAttrOpaqueData.class);
+
+ public static final int ATTR_PREFIX_OPAQUEDATA = 1157;
+
+ /* Opaque Node Attribute */
+ private final byte[] opaquePrefixAttribute;
+
+ /**
+ * Constructor to initialize the values.
+ *
+ * @param opaquePrefixAttribute opaque prefix data
+ */
+ public BgpPrefixAttrOpaqueData(byte[] opaquePrefixAttribute) {
+ this.opaquePrefixAttribute = Arrays
+ .copyOf(opaquePrefixAttribute, opaquePrefixAttribute.length);
+ }
+
+ /**
+ * Returns object of this class with specified values.
+ *
+ * @param opaquePrefixAttribute opaque prefix data
+ * @return object of BgpPrefixAttrOpaqueData
+ */
+ public static BgpPrefixAttrOpaqueData of(final byte[] opaquePrefixAttribute) {
+ return new BgpPrefixAttrOpaqueData(opaquePrefixAttribute);
+ }
+
+ /**
+ * Reads the Opaque Prefix Attribute.
+ *
+ * @param cb ChannelBuffer
+ * @return object of BgpPrefixAttrOpaqueData
+ * @throws BGPParseException while parsing BgpPrefixAttrOpaqueData
+ */
+ public static BgpPrefixAttrOpaqueData read(ChannelBuffer cb)
+ throws BGPParseException {
+ byte[] opaquePrefixAttribute;
+
+ short lsAttrLength = cb.readShort();
+ opaquePrefixAttribute = new byte[lsAttrLength];
+
+ if (cb.readableBytes() < lsAttrLength) {
+ Validation.validateLen(BGPErrorType.UPDATE_MESSAGE_ERROR,
+ BGPErrorType.ATTRIBUTE_LENGTH_ERROR,
+ lsAttrLength);
+ }
+
+ cb.readBytes(opaquePrefixAttribute);
+
+ return BgpPrefixAttrOpaqueData.of(opaquePrefixAttribute);
+ }
+
+ /**
+ * Returns the Opaque prefix attribute name.
+ *
+ * @return opaque prefix name
+ */
+ public byte[] getOpaquePrefixAttribute() {
+ return opaquePrefixAttribute;
+ }
+
+ @Override
+ public short getType() {
+ return ATTR_PREFIX_OPAQUEDATA;
+ }
+
+ @Override
+ public int hashCode() {
+ return Arrays.hashCode(opaquePrefixAttribute);
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+
+ if (obj instanceof BgpPrefixAttrOpaqueData) {
+ BgpPrefixAttrOpaqueData other = (BgpPrefixAttrOpaqueData) obj;
+ return Arrays.equals(opaquePrefixAttribute,
+ other.opaquePrefixAttribute);
+ }
+ 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("opaquePrefixAttribute", getOpaquePrefixAttribute())
+ .toString();
+ }
+
+}