-
/*
* Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
*
*/
public class LLDP extends Packet {
- private static final String CHASSISID = "ChassisId";
- private static final String PORTID = "PortId";
- private static final String TTL = "TTL";
- private static final int LLDPDefaultTlvs = 3;
- private static LLDPTLV emptyTLV = new LLDPTLV().setLength((short)0).setType((byte)0);
- public static final byte[] LLDPMulticastMac = {1,(byte)0x80,(byte)0xc2, 0, 0,(byte)0xe};
- private Map<Byte, LLDPTLV> tlvList;
-
- /**
- * Default constructor that creates the tlvList LinkedHashMap
- */
- public LLDP() {
- super();
- tlvList = new LinkedHashMap<Byte,LLDPTLV>(LLDPDefaultTlvs);
- }
-
- /**
- * Constructor that creates the tlvList LinkedHashMap and sets
- * the write access for the same
- */
- public LLDP (boolean writeAccess) {
- super(writeAccess);
- tlvList = new LinkedHashMap<Byte,LLDPTLV>(LLDPDefaultTlvs); // Mandatory TLVs
- }
-
- /**
- * @param String - description of the type of TLV
- * @return byte - type of TLV
- */
- private byte getType(String typeDesc) {
- if (typeDesc.equals(CHASSISID)) {
- return LLDPTLV.TLVType.ChassisID.getValue();
- } else if (typeDesc.equals(PORTID)) {
- return LLDPTLV.TLVType.PortID.getValue();
- } else if (typeDesc.equals(TTL)) {
- return LLDPTLV.TLVType.TTL.getValue();
- } else {
- return LLDPTLV.TLVType.Unknown.getValue();
- }
- }
-
- /**
- * @param String - description of the type of TLV
- * @return LLDPTLV - full TLV
- */
+ private static final String CHASSISID = "ChassisId";
+ private static final String PORTID = "PortId";
+ private static final String TTL = "TTL";
+ private static final int LLDPDefaultTlvs = 3;
+ private static LLDPTLV emptyTLV = new LLDPTLV().setLength((short) 0)
+ .setType((byte) 0);
+ public static final byte[] LLDPMulticastMac = { 1, (byte) 0x80,
+ (byte) 0xc2, 0, 0, (byte) 0xe };
+ private Map<Byte, LLDPTLV> tlvList;
+
+ /**
+ * Default constructor that creates the tlvList LinkedHashMap
+ */
+ public LLDP() {
+ super();
+ tlvList = new LinkedHashMap<Byte, LLDPTLV>(LLDPDefaultTlvs);
+ }
+
+ /**
+ * Constructor that creates the tlvList LinkedHashMap and sets the write
+ * access for the same
+ */
+ public LLDP(boolean writeAccess) {
+ super(writeAccess);
+ tlvList = new LinkedHashMap<Byte, LLDPTLV>(LLDPDefaultTlvs); // Mandatory
+ // TLVs
+ }
+
+ /**
+ * @param String
+ * - description of the type of TLV
+ * @return byte - type of TLV
+ */
+ private byte getType(String typeDesc) {
+ if (typeDesc.equals(CHASSISID)) {
+ return LLDPTLV.TLVType.ChassisID.getValue();
+ } else if (typeDesc.equals(PORTID)) {
+ return LLDPTLV.TLVType.PortID.getValue();
+ } else if (typeDesc.equals(TTL)) {
+ return LLDPTLV.TLVType.TTL.getValue();
+ } else {
+ return LLDPTLV.TLVType.Unknown.getValue();
+ }
+ }
+
+ /**
+ * @param String
+ * - description of the type of TLV
+ * @return LLDPTLV - full TLV
+ */
public LLDPTLV getTLV(String type) {
- return tlvList.get(getType(type));
+ return tlvList.get(getType(type));
}
- /**
- * @param String - description of the type of TLV
- * @param LLDPTLV - tlv to set
- * @return void
- */
+ /**
+ * @param String
+ * - description of the type of TLV
+ * @param LLDPTLV
+ * - tlv to set
+ * @return void
+ */
public void setTLV(String type, LLDPTLV tlv) {
- tlvList.put(getType(type), tlv);
+ tlvList.put(getType(type), tlv);
}
/**
* @return the chassisId TLV
*/
public LLDPTLV getChassisId() {
- return getTLV(CHASSISID);
+ return getTLV(CHASSISID);
}
/**
- * @param LLDPTLV - the chassisId to set
+ * @param LLDPTLV
+ * - the chassisId to set
*/
public LLDP setChassisId(LLDPTLV chassisId) {
- tlvList.put(getType(CHASSISID), chassisId);
+ tlvList.put(getType(CHASSISID), chassisId);
return this;
}
-
+
/**
* @return LLDPTLV - the portId TLV
*/
public LLDPTLV getPortId() {
- return tlvList.get(getType(PORTID));
+ return tlvList.get(getType(PORTID));
}
/**
- * @param LLDPTLV - the portId to set
+ * @param LLDPTLV
+ * - the portId to set
* @return LLDP
*/
public LLDP setPortId(LLDPTLV portId) {
- tlvList.put(getType(PORTID), portId);
+ tlvList.put(getType(PORTID), portId);
return this;
}
* @return LLDPTLV - the ttl TLV
*/
public LLDPTLV getTtl() {
- return tlvList.get(getType(TTL));
+ return tlvList.get(getType(TTL));
}
/**
- * @param LLDPTLV - the ttl to set
+ * @param LLDPTLV
+ * - the ttl to set
* @return LLDP
*/
public LLDP setTtl(LLDPTLV ttl) {
- tlvList.put(getType(TTL), ttl);
+ tlvList.put(getType(TTL), ttl);
return this;
}
* @return the optionalTLVList
*/
public List<LLDPTLV> getOptionalTLVList() {
- List<LLDPTLV> list = new ArrayList<LLDPTLV>();
- for (Map.Entry<Byte,LLDPTLV> entry : tlvList.entrySet()) {
- byte type = entry.getKey();
- if ((type == LLDPTLV.TLVType.ChassisID.getValue()) ||
- (type == LLDPTLV.TLVType.PortID.getValue()) ||
- (type == LLDPTLV.TLVType.TTL.getValue())) {
- continue;
- } else {
- list.add(entry.getValue());
- }
- }
+ List<LLDPTLV> list = new ArrayList<LLDPTLV>();
+ for (Map.Entry<Byte, LLDPTLV> entry : tlvList.entrySet()) {
+ byte type = entry.getKey();
+ if ((type == LLDPTLV.TLVType.ChassisID.getValue())
+ || (type == LLDPTLV.TLVType.PortID.getValue())
+ || (type == LLDPTLV.TLVType.TTL.getValue())) {
+ continue;
+ } else {
+ list.add(entry.getValue());
+ }
+ }
return list;
}
/**
- * @param optionalTLVList the optionalTLVList to set
+ * @param optionalTLVList
+ * the optionalTLVList to set
* @return LLDP
*/
- public LLDP setOptionalTLVList(List<LLDPTLV> optionalTLVList)
- {
- for (LLDPTLV tlv : optionalTLVList) {
- tlvList.put(tlv.getType(), tlv);
- }
+ public LLDP setOptionalTLVList(List<LLDPTLV> optionalTLVList) {
+ for (LLDPTLV tlv : optionalTLVList) {
+ tlvList.put(tlv.getType(), tlv);
+ }
return this;
}
@Override
- public Packet deserialize (byte[] data, int bitOffset, int size) throws Exception {
- int lldpOffset = bitOffset; // LLDP start
- int lldpSize = size; // LLDP size
-
- /*
- * Deserialize the TLVs until we reach the end of the packet
- */
-
- while (lldpSize > 0) {
- LLDPTLV tlv = new LLDPTLV();
- tlv.deserialize(data, lldpOffset, lldpSize);
- lldpOffset += tlv.getTLVSize(); //Size of current TLV in bits
- lldpSize -= tlv.getTLVSize();
- this.tlvList.put(tlv.getType(), tlv);
- }
- return this;
- }
-
+ public Packet deserialize(byte[] data, int bitOffset, int size)
+ throws PacketException {
+ int lldpOffset = bitOffset; // LLDP start
+ int lldpSize = size; // LLDP size
+
+ /*
+ * Deserialize the TLVs until we reach the end of the packet
+ */
+ while (lldpSize > 0) {
+ LLDPTLV tlv = new LLDPTLV();
+ tlv.deserialize(data, lldpOffset, lldpSize);
+ int tlvSize = tlv.getTLVSize(); // Size of current TLV in bits
+ lldpOffset += tlvSize;
+ lldpSize -= tlvSize;
+ this.tlvList.put(tlv.getType(), tlv);
+ }
+ return this;
+ }
+
@Override
- public byte[] serialize() throws Exception {
- int startOffset = 0;
- byte[] serializedBytes = new byte[getLLDPPacketLength()];
-
- for (Map.Entry<Byte, LLDPTLV> entry : tlvList.entrySet()) {
- LLDPTLV tlv = entry.getValue();
- int numBits = tlv.getTLVSize();
- BitBufferHelper.setBytes(serializedBytes, tlv.serialize(), startOffset, numBits);
- startOffset += numBits;
- }
- // Now add the empty LLDPTLV at the end
- BitBufferHelper.setBytes(serializedBytes, LLDP.emptyTLV.serialize(), startOffset, LLDP.emptyTLV.getTLVSize());
-
- return serializedBytes;
- }
-
+ public byte[] serialize() throws PacketException {
+ int startOffset = 0;
+ byte[] serializedBytes = new byte[getLLDPPacketLength()];
+
+ for (Map.Entry<Byte, LLDPTLV> entry : tlvList.entrySet()) {
+ LLDPTLV tlv = entry.getValue();
+ int numBits = tlv.getTLVSize();
+ try {
+ BitBufferHelper.setBytes(serializedBytes, tlv.serialize(),
+ startOffset, numBits);
+ } catch (BufferException e) {
+ throw new PacketException(e.getMessage());
+ }
+ startOffset += numBits;
+ }
+ // Now add the empty LLDPTLV at the end
+ try {
+ BitBufferHelper.setBytes(serializedBytes,
+ LLDP.emptyTLV.serialize(), startOffset,
+ LLDP.emptyTLV.getTLVSize());
+ } catch (BufferException e) {
+ throw new PacketException(e.getMessage());
+ }
+
+ return serializedBytes;
+ }
+
/**
* Returns the size of LLDP packet in bytes
+ *
* @return int - LLDP Packet size in bytes
- * @throws Exception
*/
- private int getLLDPPacketLength() throws Exception {
- int len = 0;
- LLDPTLV tlv;
-
- for (Map.Entry<Byte, LLDPTLV> entry : this.tlvList.entrySet()) {
- tlv = entry.getValue();
- len += tlv.getTLVSize();
- }
- len += LLDP.emptyTLV.getTLVSize();
-
- return len/NetUtils.NumBitsInAByte;
+ private int getLLDPPacketLength() {
+ int len = 0;
+ LLDPTLV tlv;
+
+ for (Map.Entry<Byte, LLDPTLV> entry : this.tlvList.entrySet()) {
+ tlv = entry.getValue();
+ len += tlv.getTLVSize();
+ }
+ len += LLDP.emptyTLV.getTLVSize();
+
+ return len / NetUtils.NumBitsInAByte;
}
}
Code Review / controller.git / blobdiff