ONOS-2739 - OSPF Basic Packet Structures , which includes encoding and decoding
Change-Id: Ic37fcf98dfb6c7a15a124b495aee8517a8df23c9
diff --git a/protocols/ospf/protocol/src/main/java/org/onosproject/ospf/protocol/lsa/linksubtype/LinkType.java b/protocols/ospf/protocol/src/main/java/org/onosproject/ospf/protocol/lsa/linksubtype/LinkType.java
new file mode 100644
index 0000000..8a13f83
--- /dev/null
+++ b/protocols/ospf/protocol/src/main/java/org/onosproject/ospf/protocol/lsa/linksubtype/LinkType.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2016 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.ospf.protocol.lsa.linksubtype;
+
+import com.google.common.base.MoreObjects;
+import com.google.common.primitives.Bytes;
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.onosproject.ospf.exceptions.OspfErrorType;
+import org.onosproject.ospf.exceptions.OspfParseException;
+import org.onosproject.ospf.protocol.lsa.TlvHeader;
+import org.onosproject.ospf.protocol.util.OspfUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Representation of link type TE value.
+ */
+public class LinkType extends TlvHeader implements LinkSubType {
+ private static final Logger log =
+ LoggerFactory.getLogger(LinkType.class);
+ private int linkType;
+
+ /**
+ * Creates link type instance .
+ */
+ public LinkType() {
+
+ }
+
+ /**
+ * Creates link type instance.
+ *
+ * @param header tlv header instance
+ */
+ public LinkType(TlvHeader header) {
+ this.setTlvType(header.tlvType());
+ this.setTlvLength(header.tlvLength());
+ }
+
+ /**
+ * Sets link type.
+ *
+ * @param linkType value of link type
+ */
+ public void setLinkType(int linkType) {
+ this.linkType = linkType;
+ }
+
+ /**
+ * Reads from channel buffer.
+ *
+ * @param channelBuffer channel buffer instance
+ * @throws Exception might throws exception while parsing buffer
+ */
+ public void readFrom(ChannelBuffer channelBuffer) throws Exception {
+ try {
+ int len = channelBuffer.readableBytes();
+ byte[] tempByteArray = new byte[len];
+ channelBuffer.readBytes(tempByteArray, 0, len);
+ this.setLinkType(OspfUtil.byteToInteger(tempByteArray));
+ } catch (Exception e) {
+ log.debug("Error::LinkType:: {}", e.getMessage());
+ throw new OspfParseException(OspfErrorType.OSPF_MESSAGE_ERROR,
+ OspfErrorType.BAD_MESSAGE);
+ }
+ }
+
+ /**
+ * Gets link subtype as byte array.
+ *
+ * @return byte array of link subtype
+ */
+ public byte[] asBytes() {
+ byte[] linkSubType = null;
+
+ byte[] linkSubTlvHeader = getTlvHeaderAsByteArray();
+ byte[] linkSubTlvBody = getLinkSubTypeTlvBodyAsByteArray();
+ linkSubType = Bytes.concat(linkSubTlvHeader, linkSubTlvBody);
+ return linkSubType;
+ }
+
+ /**
+ * Gets link subtype as bytes.
+ *
+ * @return byte array of link subtype
+ */
+ public byte[] getLinkSubTypeTlvBodyAsByteArray() {
+ byte[] linkSubTypeBody = new byte[4];
+ linkSubTypeBody[0] = (byte) this.linkType;
+ linkSubTypeBody[1] = 0;
+ linkSubTypeBody[2] = 0;
+ linkSubTypeBody[3] = 0;
+ return linkSubTypeBody;
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .add("linkType", linkType)
+ .toString();
+ }
+}
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