/**
* Returns Linked list of optional tlvs.
*
* @param cb of channel buffer.
* @return list of optional tlvs
* @throws PcepParseException when unsupported tlv is received
*/
protected static LinkedList<PcepValueType> parseOptionalTlv(ChannelBuffer cb)
throws PcepParseException {
LinkedList<PcepValueType> llOutOptionalTlv;
llOutOptionalTlv = new LinkedList<>();
while (MINIMUM_COMMON_HEADER_LENGTH <= cb.readableBytes()) {
PcepValueType tlv = null;
short hType = cb.readShort();
short hLength = cb.readShort();
int iValue = 0;
switch (hType) {
case StatefulIPv4LspIdentifiersTlv.TYPE:
tlv = StatefulIPv4LspIdentifiersTlv.read(cb);
break;
case StatefulLspErrorCodeTlv.TYPE:
iValue = cb.readInt();
tlv = new StatefulLspErrorCodeTlv(iValue);
break;
case StatefulRsvpErrorSpecTlv.TYPE:
tlv = StatefulRsvpErrorSpecTlv.read(cb);
break;
case SymbolicPathNameTlv.TYPE:
tlv = SymbolicPathNameTlv.read(cb, hLength);
break;
case StatefulLspDbVerTlv.TYPE:
tlv = StatefulLspDbVerTlv.read(cb);
break;
default:
// Skip the unknown TLV.
cb.skipBytes(hLength);
tlv = null;
log.info("Received unsupported TLV type :" + hType + " in LSP object.");
}
// Check for the padding
int pad = hLength % 4;
if (0 < pad) {
pad = 4 - pad;
if (pad <= cb.readableBytes()) {
cb.skipBytes(pad);
}
}
if (tlv != null) {
llOutOptionalTlv.add(tlv);
}
}
if (0 < cb.readableBytes()) {
throw new PcepParseException("Optional Tlv parsing error. Extra bytes received.");
}
return llOutOptionalTlv;
}
/** Test case for Symbolic path tlv. */
public class SymbolicPathNameTlvTest {
private final byte[] value1 = {0x41};
private final Short length1 = new Short((short) 2);
private final SymbolicPathNameTlv tlv1 = SymbolicPathNameTlv.of(value1, length1);
private final byte[] value2 = {0x41};
private final Short length2 = new Short((short) 2);
private final SymbolicPathNameTlv tlv2 = SymbolicPathNameTlv.of(value1, length2);
private final byte[] value3 = {0x41, 0x43};
private final Short length3 = new Short((short) 3);
private final SymbolicPathNameTlv tlv3 = SymbolicPathNameTlv.of(value3, length3);
@Test
public void basics() {
new EqualsTester().addEqualityGroup(tlv1, tlv2).addEqualityGroup(tlv3).testEquals();
}
}
