*/
package org.opendaylight.protocol.pcep.ietf.stateful02;
-import java.util.BitSet;
+import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeMedium;
+import com.google.common.base.Preconditions;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import java.util.BitSet;
+import java.util.List;
import org.opendaylight.protocol.pcep.spi.AbstractObjectWithTlvsParser;
import org.opendaylight.protocol.pcep.spi.ObjectUtil;
import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
-import org.opendaylight.protocol.pcep.spi.TlvHandlerRegistry;
+import org.opendaylight.protocol.pcep.spi.TlvRegistry;
+import org.opendaylight.protocol.pcep.spi.VendorInformationTlvRegistry;
import org.opendaylight.protocol.util.ByteArray;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.stateful._02.rev140110.PlspId;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.stateful._02.rev140110.lsp.db.version.tlv.LspDbVersion;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.ObjectHeader;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.vendor.information.tlvs.VendorInformationTlv;
/**
* Parser for {@link Lsp}
*/
public class Stateful02LspObjectParser extends AbstractObjectWithTlvsParser<TlvsBuilder> {
- public static final int CLASS = 32;
-
- public static final int TYPE = 1;
-
- /*
- * offset of TLVs offset of other fields are not defined as constants
- * because of non-standard mapping of bits
- */
- private static final int TLVS_OFFSET = 4;
-
- /*
- * 12b extended to 16b so first 4b are restricted (belongs to LSP ID)
- */
- private static final int DELEGATE_FLAG_OFFSET = 15;
- private static final int SYNC_FLAG_OFFSET = 14;
- private static final int REMOVE_FLAG_OFFSET = 12;
- private static final int OPERATIONAL_FLAG_OFFSET = 13;
-
- public Stateful02LspObjectParser(final TlvHandlerRegistry tlvReg) {
- super(tlvReg);
- }
-
- @Override
- public Lsp parseObject(final ObjectHeader header, final byte[] bytes) throws PCEPDeserializerException {
- if (bytes == null || bytes.length == 0) {
- throw new IllegalArgumentException("Array of bytes is mandatory. Can't be null or empty.");
- }
- final BitSet flags = ByteArray.bytesToBitSet(ByteArray.subByte(bytes, 2, 2));
-
- final LspBuilder builder = new LspBuilder();
- builder.setIgnore(header.isIgnore());
- builder.setProcessingRule(header.isProcessingRule());
-
- builder.setPlspId(new PlspId((ByteArray.bytesToLong(ByteArray.subByte(bytes, 0, 2)) & 0xFFFF) << 4 | (bytes[2] & 0xFF) >> 4));
- builder.setDelegate(flags.get(DELEGATE_FLAG_OFFSET));
- builder.setSync(flags.get(SYNC_FLAG_OFFSET));
- builder.setRemove(flags.get(REMOVE_FLAG_OFFSET));
- builder.setOperational(flags.get(OPERATIONAL_FLAG_OFFSET));
- final TlvsBuilder b = new TlvsBuilder();
- parseTlvs(b, ByteArray.cutBytes(bytes, TLVS_OFFSET));
- builder.setTlvs(b.build());
- return builder.build();
- }
-
- @Override
- public void addTlv(final TlvsBuilder builder, final Tlv tlv) {
- if (tlv instanceof RsvpErrorSpec) {
- builder.setRsvpErrorSpec((RsvpErrorSpec) tlv);
- } else if (tlv instanceof SymbolicPathName) {
- builder.setSymbolicPathName((SymbolicPathName) tlv);
- } else if (tlv instanceof LspDbVersion) {
- builder.setLspDbVersion((LspDbVersion) tlv);
- }
- }
-
- @Override
- public byte[] serializeObject(final Object object) {
- if (!(object instanceof Lsp)) {
- throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + object.getClass() + ". Needed LspObject.");
- }
- final Lsp specObj = (Lsp) object;
-
- final byte[] tlvs = serializeTlvs(specObj.getTlvs());
- final byte[] retBytes = new byte[TLVS_OFFSET + tlvs.length + getPadding(TLVS_OFFSET + tlvs.length, PADDED_TO)];
-
- final int lspID = specObj.getPlspId().getValue().intValue();
- retBytes[0] = (byte) (lspID >> 12);
- retBytes[1] = (byte) (lspID >> 4);
- retBytes[2] = (byte) (lspID << 4);
- if (specObj.isDelegate() != null && specObj.isDelegate()) {
- retBytes[3] |= 1 << (Byte.SIZE - (DELEGATE_FLAG_OFFSET - Byte.SIZE) - 1);
- }
- if (specObj.isRemove() != null && specObj.isRemove()) {
- retBytes[3] |= 1 << (Byte.SIZE - (REMOVE_FLAG_OFFSET - Byte.SIZE) - 1);
- }
- if (specObj.isSync() != null && specObj.isSync()) {
- retBytes[3] |= 1 << (Byte.SIZE - (SYNC_FLAG_OFFSET - Byte.SIZE) - 1);
- }
- if (specObj.isOperational() != null && specObj.isOperational()) {
- retBytes[3] |= 1 << (Byte.SIZE - (OPERATIONAL_FLAG_OFFSET - Byte.SIZE) - 1);
- }
- ByteArray.copyWhole(tlvs, retBytes, TLVS_OFFSET);
- return ObjectUtil.formatSubobject(TYPE, CLASS, object.isProcessingRule(), object.isIgnore(), retBytes);
- }
-
- public byte[] serializeTlvs(final Tlvs tlvs) {
- if (tlvs == null) {
- return new byte[0];
- }
- int finalLength = 0;
- byte[] rsvpErrBytes = null;
- byte[] symbBytes = null;
- byte[] dbvBytes = null;
- if (tlvs.getRsvpErrorSpec() != null) {
- rsvpErrBytes = serializeTlv(tlvs.getRsvpErrorSpec());
- finalLength += rsvpErrBytes.length;
- }
- if (tlvs.getSymbolicPathName() != null) {
- symbBytes = serializeTlv(tlvs.getSymbolicPathName());
- finalLength += symbBytes.length;
- }
- if (tlvs.getLspDbVersion() != null) {
- dbvBytes = serializeTlv(tlvs.getLspDbVersion());
- finalLength += dbvBytes.length;
- }
- int offset = 0;
- final byte[] result = new byte[finalLength];
- if (rsvpErrBytes != null) {
- ByteArray.copyWhole(rsvpErrBytes, result, offset);
- offset += rsvpErrBytes.length;
- }
- if (symbBytes != null) {
- ByteArray.copyWhole(symbBytes, result, offset);
- offset += symbBytes.length;
- }
- if (dbvBytes != null) {
- ByteArray.copyWhole(dbvBytes, result, offset);
- offset += dbvBytes.length;
- }
- return result;
- }
-
- @Override
- public int getObjectType() {
- return TYPE;
- }
-
- @Override
- public int getObjectClass() {
- return CLASS;
- }
+ public static final int CLASS = 32;
+
+ public static final int TYPE = 1;
+
+ /*
+ * first 4b are restricted
+ */
+ private static final int DELEGATE_FLAG_OFFSET = 15;
+ private static final int SYNC_FLAG_OFFSET = 14;
+ private static final int OPERATIONAL_FLAG_OFFSET = 13;
+ private static final int REMOVE_FLAG_OFFSET = 12;
+
+ private static final int ONE_B_OFFSET = 12;
+ private static final int TWO_B_OFFSET = 4;
+
+ private static final int FLAGS_SIZE = 2;
+
+ public Stateful02LspObjectParser(final TlvRegistry tlvReg, final VendorInformationTlvRegistry viTlvReg) {
+ super(tlvReg, viTlvReg);
+ }
+
+ @Override
+ public Lsp parseObject(final ObjectHeader header, final ByteBuf bytes) throws PCEPDeserializerException {
+ Preconditions.checkArgument(bytes != null && bytes.isReadable(), "Array of bytes is mandatory. Can't be null or empty.");
+ final LspBuilder builder = new LspBuilder();
+ builder.setIgnore(header.isIgnore());
+ builder.setProcessingRule(header.isProcessingRule());
+ int[] plspIdRaw = { bytes.readUnsignedByte(), bytes.readUnsignedByte(), bytes.getUnsignedByte(2) };
+ builder.setPlspId(new PlspId((long) ((plspIdRaw[0] << ONE_B_OFFSET) | (plspIdRaw[1] << TWO_B_OFFSET) | (plspIdRaw[2] >> TWO_B_OFFSET))));
+ final BitSet flags = ByteArray.bytesToBitSet(ByteArray.readBytes(bytes, FLAGS_SIZE));
+ builder.setDelegate(flags.get(DELEGATE_FLAG_OFFSET));
+ builder.setSync(flags.get(SYNC_FLAG_OFFSET));
+ builder.setRemove(flags.get(REMOVE_FLAG_OFFSET));
+ builder.setOperational(flags.get(OPERATIONAL_FLAG_OFFSET));
+ final TlvsBuilder b = new TlvsBuilder();
+ parseTlvs(b, bytes.slice());
+ builder.setTlvs(b.build());
+ return builder.build();
+ }
+
+ @Override
+ public void addTlv(final TlvsBuilder builder, final Tlv tlv) {
+ if (tlv instanceof RsvpErrorSpec) {
+ builder.setRsvpErrorSpec((RsvpErrorSpec) tlv);
+ } else if (tlv instanceof SymbolicPathName) {
+ builder.setSymbolicPathName((SymbolicPathName) tlv);
+ } else if (tlv instanceof LspDbVersion) {
+ builder.setLspDbVersion((LspDbVersion) tlv);
+ }
+ }
+
+ @Override
+ public void serializeObject(final Object object, final ByteBuf buffer) {
+ Preconditions.checkArgument(object instanceof Lsp, "Wrong instance of PCEPObject. Passed %s. Needed LspObject.", object.getClass());
+ final Lsp specObj = (Lsp) object;
+ final ByteBuf body = Unpooled.buffer();
+ final PlspId plsp = specObj.getPlspId();
+ Preconditions.checkArgument(plsp != null, "PLSP-ID not present");
+ writeMedium(plsp.getValue().intValue() << TWO_B_OFFSET, body);
+
+ BitSet flags = new BitSet(2 * Byte.SIZE);
+ if (specObj.isDelegate() != null && specObj.isDelegate()) {
+ flags.set(DELEGATE_FLAG_OFFSET);
+ }
+ if (specObj.isRemove() != null && specObj.isRemove()) {
+ flags.set(REMOVE_FLAG_OFFSET);
+ }
+ if (specObj.isSync() != null && specObj.isSync()) {
+ flags.set(SYNC_FLAG_OFFSET);
+ }
+ if (specObj.isOperational() != null && specObj.isOperational()) {
+ flags.set(OPERATIONAL_FLAG_OFFSET);
+ }
+ body.writeByte(ByteArray.bitSetToBytes(flags, FLAGS_SIZE)[1]);
+ serializeTlvs(specObj.getTlvs(), body);
+ ObjectUtil.formatSubobject(TYPE, CLASS, object.isProcessingRule(), object.isIgnore(), body, buffer);
+ }
+
+ public void serializeTlvs(final Tlvs tlvs, final ByteBuf body) {
+ if (tlvs == null) {
+ return;
+ }
+ if (tlvs.getRsvpErrorSpec() != null) {
+ serializeTlv(tlvs.getRsvpErrorSpec(), body);
+ }
+ if (tlvs.getSymbolicPathName() != null) {
+ serializeTlv(tlvs.getSymbolicPathName(), body);
+ }
+ if (tlvs.getLspDbVersion() != null) {
+ serializeTlv(tlvs.getLspDbVersion(), body);
+ }
+ serializeVendorInformationTlvs(tlvs.getVendorInformationTlv(), body);
+ }
+
+ @Override
+ protected final void addVendorInformationTlvs(final TlvsBuilder builder, final List<VendorInformationTlv> tlvs) {
+ if (!tlvs.isEmpty()) {
+ builder.setVendorInformationTlv(tlvs);
+ }
+ }
}
Code Review / bgpcep.git / blobdiff