ONOS-4083,ONOS-4084:ISIS PDU TLV Data Structures
Change-Id: Ice0d42f2c886fa5f398b562e126614ed45f858a2
diff --git a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/IpExtendedReachabilityTlv.java b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/IpExtendedReachabilityTlv.java
new file mode 100644
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+++ b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/IpExtendedReachabilityTlv.java
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+/*
+ * Copyright 2016-present 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.isis.io.isispacket.tlv;
+
+import com.google.common.base.MoreObjects;
+import com.google.common.primitives.Bytes;
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.onosproject.isis.io.isispacket.tlv.subtlv.SubTlvFinder;
+import org.onosproject.isis.io.isispacket.tlv.subtlv.SubTlvToBytes;
+import org.onosproject.isis.io.isispacket.tlv.subtlv.TrafficEngineeringSubTlv;
+import org.onosproject.isis.io.util.IsisUtil;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Representation of IP extended reachability TLV.
+ */
+public class IpExtendedReachabilityTlv extends TlvHeader implements IsisTlv {
+
+ private String sysIdAndPseudoNumber;
+ private int defaultMetric;
+ private byte subTlvLength;
+ private List<TrafficEngineeringSubTlv> trafEnginSubTlv = new ArrayList<>();
+
+ /**
+ * Creates an instance of IP external reachability TLV.
+ *
+ * @param tlvHeader tlvHeader
+ */
+ public IpExtendedReachabilityTlv(TlvHeader tlvHeader) {
+ this.setTlvType(tlvHeader.tlvType());
+ this.setTlvLength(tlvHeader.tlvLength());
+ }
+
+ /**
+ * Returns the system ID and pseudo number of IP external reachability TLV.
+ *
+ * @return sysIdAndPseudoNumber system ID and pseudo number
+ */
+ public String sysIdAndPseudoNumber() {
+ return sysIdAndPseudoNumber;
+ }
+
+ /**
+ * Sets the system ID and pseudo number for IP external reachability TLV.
+ *
+ * @param sysIdAndPseudoNumber system ID and pseudo number
+ */
+ public void setSysIdAndPseudoNumber(String sysIdAndPseudoNumber) {
+ this.sysIdAndPseudoNumber = sysIdAndPseudoNumber;
+ }
+
+ /**
+ * Adds the traffic engineering sub TLV to IP external reachability TLV.
+ *
+ * @param trafEnginSubTlv traffic engineering sub TLV
+ */
+ public void addSubTlv(TrafficEngineeringSubTlv trafEnginSubTlv) {
+ this.trafEnginSubTlv.add(trafEnginSubTlv);
+ }
+
+ /**
+ * Returns the sub TLV length of IP external reachability TLV.
+ *
+ * @return sub TLV length
+ */
+ public byte subTlvLength() {
+ return subTlvLength;
+ }
+
+ /**
+ * Sets the sub TLV length for IP external reachability TLV.
+ *
+ * @param subTlvLength sub TLV length
+ */
+ public void setSubTlvLength(byte subTlvLength) {
+ this.subTlvLength = subTlvLength;
+ }
+
+ /**
+ * Returns default metric of IP external reachability TLV.
+ *
+ * @return default metric
+ */
+ public int defaultMetric() {
+ return defaultMetric;
+ }
+
+ /**
+ * Sets default metric for IP external reachability TLV.
+ *
+ * @param defaultMetric default metric
+ */
+ public void setDefaultMetric(int defaultMetric) {
+ this.defaultMetric = defaultMetric;
+ }
+
+ @Override
+ public void readFrom(ChannelBuffer channelBuffer) {
+ byte[] tempByteArray = new byte[IsisUtil.ID_PLUS_ONE_BYTE];
+ channelBuffer.readBytes(tempByteArray, 0, IsisUtil.ID_PLUS_ONE_BYTE);
+ this.setSysIdAndPseudoNumber(IsisUtil.systemIdPlus(tempByteArray));
+ this.setDefaultMetric(channelBuffer.readUnsignedMedium());
+ this.setSubTlvLength((byte) channelBuffer.readByte());
+ while (channelBuffer.readableBytes() > 0) {
+ TlvHeader tlvHeader = new TlvHeader();
+ tlvHeader.setTlvType(channelBuffer.readByte());
+ tlvHeader.setTlvLength(channelBuffer.readByte());
+ this.addSubTlv(SubTlvFinder.findSubTlv(tlvHeader,
+ channelBuffer.readBytes(tlvHeader.tlvLength())));
+ }
+ }
+
+ @Override
+ public byte[] asBytes() {
+ byte[] bytes = null;
+ byte[] tlvHeader = tlvHeaderAsByteArray();
+ byte[] tlvBody = tlvBodyAsBytes();
+ //systemID + pseudo number+length of subtlv=11l
+ tlvBody[10] = (byte) (tlvBody.length - 11);
+ tlvHeader[1] = (byte) tlvBody.length;
+ bytes = Bytes.concat(tlvHeader, tlvBody);
+ return bytes;
+ }
+
+ /**
+ * Returns TLV body of IP external reachability TLV.
+ *
+ * @return byteArray TLV body of IP external reachability TLV.
+ */
+ private byte[] tlvBodyAsBytes() {
+ List<Byte> bodyLst = new ArrayList<>();
+ bodyLst.addAll(IsisUtil.sourceAndLanIdToBytes(this.sysIdAndPseudoNumber()));
+ bodyLst.addAll(Bytes.asList(IsisUtil.convertToThreeBytes(this.defaultMetric())));
+ bodyLst.add(this.subTlvLength());
+ for (TrafficEngineeringSubTlv trafficEngineeringSubTlv : this.trafEnginSubTlv) {
+ bodyLst.addAll(SubTlvToBytes.tlvToBytes(trafficEngineeringSubTlv));
+ }
+ return Bytes.toArray(bodyLst);
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .omitNullValues()
+ .add("sysIdAndPseudoNumber", sysIdAndPseudoNumber)
+ .add("defaultMetric", defaultMetric)
+ .add("subTlvLength", subTlvLength)
+ .add("trafEnginSubTlv", trafEnginSubTlv)
+ .toString();
+ }
+}
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