package org.opendaylight.protocol.pcep.impl.object;
-import org.opendaylight.protocol.pcep.PCEPDeserializerException;
-import org.opendaylight.protocol.pcep.PCEPDocumentedException;
-import org.opendaylight.protocol.pcep.PCEPErrors;
-import org.opendaylight.protocol.pcep.spi.TlvHandlerRegistry;
+import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeUnsignedByte;
+
+import com.google.common.base.Preconditions;
+import com.google.common.primitives.UnsignedBytes;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+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.PCEPErrors;
+import org.opendaylight.protocol.pcep.spi.TlvRegistry;
+import org.opendaylight.protocol.pcep.spi.UnknownObject;
+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.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.ProtocolVersion;
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.lsp.db.version.tlv.LspDbVersion;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.of.list.tlv.OfList;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.open.object.Open;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.open.object.OpenBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.open.object.open.Tlvs;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.open.object.open.TlvsBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.predundancy.group.id.tlv.PredundancyGroupId;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.stateful.capability.tlv.Stateful;
-
-import com.google.common.primitives.UnsignedBytes;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.vendor.information.tlvs.VendorInformationTlv;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
/**
* Parser for {@link Open}
*/
-
public class PCEPOpenObjectParser extends AbstractObjectWithTlvsParser<TlvsBuilder> {
-
- public static final int CLASS = 1;
-
- public static final int TYPE = 1;
-
- /*
- * lengths of fields in bytes
- */
- private static final int VER_FLAGS_MF_LENGTH = 1;
- private static final int KEEPALIVE_F_LENGTH = 1;
- private static final int DEAD_TIMER_LENGTH = 1;
- private static final int SID_F_LENGTH = 1;
-
- /*
- * lengths of subfields inside multi-field in bits
- */
- private static final int VERSION_SF_LENGTH = 3;
-
- /*
- * offsets of field in bytes
- */
- private static final int VER_FLAGS_MF_OFFSET = 0;
- private static final int KEEPALIVE_F_OFFSET = VER_FLAGS_MF_OFFSET + VER_FLAGS_MF_LENGTH;
- private static final int DEAD_TIMER_OFFSET = KEEPALIVE_F_OFFSET + KEEPALIVE_F_LENGTH;
- private static final int SID_F_OFFSET = DEAD_TIMER_OFFSET + DEAD_TIMER_LENGTH;
- private static final int TLVS_OFFSET = SID_F_OFFSET + SID_F_LENGTH;
-
- /*
- * offsets of subfields inside multi-field in bits
- */
- private static final int VERSION_SF_OFFSET = 0;
-
- private static final int PCEP_VERSION = 1;
-
- public PCEPOpenObjectParser(final TlvHandlerRegistry tlvReg) {
- super(tlvReg);
- }
-
- @Override
- public Open parseObject(final ObjectHeader header, final byte[] bytes) throws PCEPDeserializerException, PCEPDocumentedException {
- if (bytes == null || bytes.length == 0) {
- throw new IllegalArgumentException("Array of bytes is mandatory. Can't be null or empty.");
- }
- final int versionValue = ByteArray.copyBitsRange(bytes[VER_FLAGS_MF_OFFSET], VERSION_SF_OFFSET, VERSION_SF_LENGTH);
-
- if (versionValue != PCEP_VERSION) {
- throw new PCEPDocumentedException("Unsupported PCEP version " + versionValue, PCEPErrors.PCEP_VERSION_NOT_SUPPORTED);
- }
- final OpenBuilder builder = new OpenBuilder();
- builder.setVersion(new ProtocolVersion((short) versionValue));
- builder.setProcessingRule(header.isProcessingRule());
- builder.setIgnore(header.isIgnore());
- builder.setDeadTimer((short) UnsignedBytes.toInt(bytes[DEAD_TIMER_OFFSET]));
- builder.setKeepalive((short) UnsignedBytes.toInt(bytes[KEEPALIVE_F_OFFSET]));
- builder.setSessionId((short) UnsignedBytes.toInt(bytes[SID_F_OFFSET]));
-
- final TlvsBuilder tbuilder = new TlvsBuilder();
- parseTlvs(tbuilder, ByteArray.cutBytes(bytes, TLVS_OFFSET));
- builder.setTlvs(tbuilder.build());
- return builder.build();
- }
-
- @Override
- public void addTlv(final TlvsBuilder tbuilder, final Tlv tlv) {
- if (tlv instanceof OfList) {
- tbuilder.setOfList((OfList) tlv);
- } else if (tlv instanceof Stateful) {
- tbuilder.setStateful((Stateful) tlv);
- } else if (tlv instanceof PredundancyGroupId) {
- tbuilder.setPredundancyGroupId((PredundancyGroupId) tlv);
- } else if (tlv instanceof LspDbVersion) {
- tbuilder.setLspDbVersion((LspDbVersion) tlv);
- }
- }
-
- @Override
- public byte[] serializeObject(final Object object) {
- if (!(object instanceof Open)) {
- throw new IllegalArgumentException("Wrong instance of PCEPObject. Passed " + object.getClass() + ". Needed OpenObject.");
- }
- final Open open = (Open) object;
-
- final byte versionFlagMF = (byte) (PCEP_VERSION << (Byte.SIZE - VERSION_SF_LENGTH));
-
- final byte[] tlvs = serializeTlvs(open.getTlvs());
-
- final byte[] bytes = new byte[TLVS_OFFSET + tlvs.length + getPadding(TLVS_OFFSET + tlvs.length, PADDED_TO)];
-
- bytes[VER_FLAGS_MF_OFFSET] = versionFlagMF;
- bytes[KEEPALIVE_F_OFFSET] = UnsignedBytes.checkedCast(open.getKeepalive());
- bytes[DEAD_TIMER_OFFSET] = UnsignedBytes.checkedCast(open.getDeadTimer());
- bytes[SID_F_OFFSET] = UnsignedBytes.checkedCast(open.getSessionId());
- if (tlvs.length != 0) {
- ByteArray.copyWhole(tlvs, bytes, TLVS_OFFSET);
- }
- return bytes;
- }
-
- public byte[] serializeTlvs(final Tlvs tlvs) {
- if (tlvs == null) {
- return new byte[0];
- }
- int finalLength = 0;
- byte[] ofListBytes = null;
- byte[] statefulBytes = null;
- byte[] predundancyBytes = null;
- byte[] lspDbBytes = null;
- if (tlvs.getOfList() != null) {
- ofListBytes = serializeTlv(tlvs.getOfList());
- finalLength += ofListBytes.length;
- }
- if (tlvs.getStateful() != null) {
- statefulBytes = serializeTlv(tlvs.getStateful());
- finalLength += statefulBytes.length;
- }
- if (tlvs.getPredundancyGroupId() != null) {
- predundancyBytes = serializeTlv(tlvs.getPredundancyGroupId());
- finalLength += predundancyBytes.length;
- }
- if (tlvs.getLspDbVersion() != null) {
- lspDbBytes = serializeTlv(tlvs.getLspDbVersion());
- finalLength += lspDbBytes.length;
- }
- int offset = 0;
- final byte[] result = new byte[finalLength];
- if (ofListBytes != null) {
- ByteArray.copyWhole(ofListBytes, result, offset);
- offset += ofListBytes.length;
- }
- if (statefulBytes != null) {
- ByteArray.copyWhole(statefulBytes, result, offset);
- offset += statefulBytes.length;
- }
- if (lspDbBytes != null) {
- ByteArray.copyWhole(lspDbBytes, result, offset);
- offset += lspDbBytes.length;
- }
- if (predundancyBytes != null) {
- ByteArray.copyWhole(predundancyBytes, result, offset);
- offset += predundancyBytes.length;
- }
- return result;
- }
-
- @Override
- public int getObjectType() {
- return TYPE;
- }
-
- @Override
- public int getObjectClass() {
- return CLASS;
- }
+ private static final Logger LOG = LoggerFactory.getLogger(PCEPOpenObjectParser.class);
+
+ public static final int CLASS = 1;
+
+ public static final int TYPE = 1;
+
+ /*
+ * lengths of subfields inside multi-field in bits
+ */
+ private static final int VERSION_SF_LENGTH = 3;
+
+ /*
+ * offsets of subfields inside multi-field in bits
+ */
+ private static final int VERSION_SF_OFFSET = 0;
+
+ private static final int PCEP_VERSION = 1;
+
+ public PCEPOpenObjectParser(TlvRegistry tlvReg, VendorInformationTlvRegistry viTlvReg) {
+ super(tlvReg, viTlvReg);
+ }
+
+ @Override
+ public Object 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 int versionValue = ByteArray.copyBitsRange(bytes.readByte(), VERSION_SF_OFFSET, VERSION_SF_LENGTH);
+
+ final OpenBuilder builder = new OpenBuilder();
+ builder.setVersion(new ProtocolVersion((short) versionValue));
+ builder.setProcessingRule(header.isProcessingRule());
+ builder.setIgnore(header.isIgnore());
+ final short keepalive = (short) UnsignedBytes.toInt(bytes.readByte());
+ builder.setKeepalive(keepalive);
+ final short deadTimer = (short) UnsignedBytes.toInt(bytes.readByte());
+ if(keepalive == 0) {
+ builder.setDeadTimer((short) 0);
+ } else {
+ builder.setDeadTimer(deadTimer);
+ }
+ builder.setSessionId((short) UnsignedBytes.toInt(bytes.readByte()));
+
+ final TlvsBuilder tbuilder = new TlvsBuilder();
+ parseTlvs(tbuilder, bytes.slice());
+ builder.setTlvs(tbuilder.build());
+
+ final Open obj = builder.build();
+ if (versionValue != PCEP_VERSION) {
+ // TODO: Should we move this check into the negotiator
+ LOG.debug("Unsupported PCEP version {}", versionValue);
+ return new UnknownObject(PCEPErrors.PCEP_VERSION_NOT_SUPPORTED, obj);
+ }
+
+ return obj;
+ }
+
+ @Override
+ public void addTlv(final TlvsBuilder tbuilder, final Tlv tlv) {
+ if (tlv instanceof OfList) {
+ tbuilder.setOfList((OfList) tlv);
+ }
+ }
+
+ @Override
+ public void serializeObject(final Object object, final ByteBuf buffer) {
+ Preconditions.checkArgument(object instanceof Open, "Wrong instance of PCEPObject. Passed %s. Needed OpenObject.", object.getClass());
+ final Open open = (Open) object;
+ final ByteBuf body = Unpooled.buffer();
+ writeUnsignedByte((short) (PCEP_VERSION << (Byte.SIZE - VERSION_SF_LENGTH)), body);
+ writeUnsignedByte(open.getKeepalive(), body);
+ writeUnsignedByte(open.getDeadTimer(), body);
+ Preconditions.checkArgument(open.getSessionId() != null, "SessionId is mandatory.");
+ writeUnsignedByte(open.getSessionId(), body);
+ serializeTlvs(open.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.getOfList() != null) {
+ serializeTlv(tlvs.getOfList(), 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