import java.util.ArrayList;
import java.util.List;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import org.opendaylight.protocol.util.ByteArray;
import org.opendaylight.protocol.concepts.IPv4Prefix;
import org.opendaylight.protocol.concepts.IPv6Prefix;
import org.opendaylight.protocol.pcep.PCEPDeserializerException;
+import org.opendaylight.protocol.pcep.impl.subobject.EROAsNumberSubobjectParser;
import org.opendaylight.protocol.pcep.impl.subobject.EROExplicitExclusionRouteSubobjectParser;
+import org.opendaylight.protocol.pcep.impl.subobject.EROIPv4PrefixSubobjectParser;
+import org.opendaylight.protocol.pcep.impl.subobject.EROIPv6PrefixSubobjectParser;
import org.opendaylight.protocol.pcep.impl.subobject.EROLabelSubobjectParser;
import org.opendaylight.protocol.pcep.impl.subobject.EROPathKeyWith128PCEIDSubobjectParser;
import org.opendaylight.protocol.pcep.impl.subobject.EROPathKeyWith32PCEIDSubobjectParser;
import org.opendaylight.protocol.pcep.subobject.EROProtectionSubobject;
import org.opendaylight.protocol.pcep.subobject.EROUnnumberedInterfaceSubobject;
import org.opendaylight.protocol.pcep.subobject.ExplicitRouteSubobject;
-import org.opendaylight.protocol.util.ByteArray;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
/**
* Parser for {@link org.opendaylight.protocol.pcep.PCEPSubobject PCEPSubobject}
*/
public class PCEPEROSubobjectParser {
- private static final Logger logger = LoggerFactory.getLogger(PCEPEROSubobjectParser.class);
+ private static final Logger logger = LoggerFactory.getLogger(PCEPEROSubobjectParser.class);
- /**
- * Type identifier for {@link org.opendaylight.protocol.pcep.PCEPSubobject PCEPSubobject}
- */
- public enum PCEPSubobjectType {
- IPv4_PREFIX(1), IPv6_PREFIX(2), LABEL(3), UNNUMBERED_INTERFACE_ID(4), AS_NUMBER(32), EXRS(33), PROTECTION(37), PK_32(64), PK_128(65);
+ /**
+ * Type identifier for {@link org.opendaylight.protocol.pcep.PCEPSubobject
+ * PCEPSubobject}
+ */
+ public enum PCEPSubobjectType {
+ IPv4_PREFIX(1), IPv6_PREFIX(2), LABEL(3), UNNUMBERED_INTERFACE_ID(4), AS_NUMBER(32), EXRS(33), PROTECTION(37), PK_32(
+ 64), PK_128(65);
private final int indicator;
- PCEPSubobjectType(final int indicator) {
+ PCEPSubobjectType(int indicator) {
this.indicator = indicator;
}
return this.indicator;
}
- public static PCEPSubobjectType getFromInt(final int type) throws PCEPDeserializerException {
+ public static PCEPSubobjectType getFromInt(int type) throws PCEPDeserializerException {
for (final PCEPSubobjectType type_e : PCEPSubobjectType.values()) {
if (type_e.getIndicator() == type)
return type_e;
}
- throw new PCEPDeserializerException("Unknown Subobject type. Passed: " + type + "; Known: " + PCEPSubobjectType.values() + ".");
+ throw new PCEPDeserializerException("Unknown Subobject type. Passed: " + type + "; Known: "
+ + PCEPSubobjectType.values() + ".");
}
}
- /*
- * Fields lengths in Bytes
- */
- public static final int TYPE_FLAG_F_LENGTH = 1;
- public static final int LENGTH_F_LENGTH = 1;
+ /*
+ * Fields lengths in Bytes
+ */
+ public static final int TYPE_FLAG_F_LENGTH = 1;
+ public static final int LENGTH_F_LENGTH = 1;
- /*
- * Fields offsets in Bytes
- */
- public static final int TYPE_FLAG_F_OFFSET = 0;
- public static final int LENGTH_F_OFFSET = TYPE_FLAG_F_OFFSET + TYPE_FLAG_F_LENGTH;
- public static final int SO_CONTENTS_OFFSET = LENGTH_F_OFFSET + LENGTH_F_LENGTH;
+ /*
+ * Fields offsets in Bytes
+ */
+ public static final int TYPE_FLAG_F_OFFSET = 0;
+ public static final int LENGTH_F_OFFSET = TYPE_FLAG_F_OFFSET + TYPE_FLAG_F_LENGTH;
+ public static final int SO_CONTENTS_OFFSET = LENGTH_F_OFFSET + LENGTH_F_LENGTH;
- public static List<ExplicitRouteSubobject> parse(final byte[] bytes) throws PCEPDeserializerException {
- if (bytes == null)
- throw new IllegalArgumentException("Byte array is mandatory.");
+ public static List<ExplicitRouteSubobject> parse(byte[] bytes) throws PCEPDeserializerException {
+ if (bytes == null)
+ throw new IllegalArgumentException("Byte array is mandatory.");
- final List<ExplicitRouteSubobject> subobjsList = new ArrayList<ExplicitRouteSubobject>();
- boolean loose_flag;
- PCEPSubobjectType type;
- byte[] soContentsBytes;
- int length;
- int offset = 0;
+ final List<ExplicitRouteSubobject> subobjsList = new ArrayList<ExplicitRouteSubobject>();
+ boolean loose_flag;
+ PCEPSubobjectType type;
+ byte[] soContentsBytes;
+ int length;
+ int offset = 0;
- while (offset < bytes.length) {
+ while (offset < bytes.length) {
- loose_flag = ((bytes[offset + TYPE_FLAG_F_OFFSET] & (1 << 7)) != 0) ? true : false;
- length = ByteArray.bytesToInt(ByteArray.subByte(bytes, offset + LENGTH_F_OFFSET, LENGTH_F_LENGTH));
+ loose_flag = ((bytes[offset + TYPE_FLAG_F_OFFSET] & (1 << 7)) != 0) ? true : false;
+ length = ByteArray.bytesToInt(ByteArray.subByte(bytes, offset + LENGTH_F_OFFSET, LENGTH_F_LENGTH));
- type = PCEPSubobjectType.getFromInt((bytes[offset + TYPE_FLAG_F_OFFSET] & 0xff) & ~(1 << 7));
+ type = PCEPSubobjectType.getFromInt((bytes[offset + TYPE_FLAG_F_OFFSET] & 0xff) & ~(1 << 7));
- if (length > bytes.length - offset)
- throw new PCEPDeserializerException("Wrong length specified. Passed: " + length + "; Expected: <= "
- + (bytes.length - offset));
+ if (length > bytes.length - offset)
+ throw new PCEPDeserializerException("Wrong length specified. Passed: " + length + "; Expected: <= " + (bytes.length - offset));
- soContentsBytes = new byte[length - SO_CONTENTS_OFFSET];
- System.arraycopy(bytes, offset + SO_CONTENTS_OFFSET, soContentsBytes, 0, length - SO_CONTENTS_OFFSET);
+ soContentsBytes = new byte[length - SO_CONTENTS_OFFSET];
+ System.arraycopy(bytes, offset + SO_CONTENTS_OFFSET, soContentsBytes, 0, length - SO_CONTENTS_OFFSET);
- logger.debug("Attempt to parse subobject from bytes: {}", ByteArray.bytesToHexString(soContentsBytes));
- final ExplicitRouteSubobject subObj = parseSpecificSubobject(type, soContentsBytes, loose_flag);
- logger.debug("Subobject was parsed. {}", subObj);
+ logger.debug("Attempt to parse subobject from bytes: {}", ByteArray.bytesToHexString(soContentsBytes));
+ final ExplicitRouteSubobject subObj = parseSpecificSubobject(type, soContentsBytes, loose_flag);
+ logger.debug("Subobject was parsed. {}", subObj);
- subobjsList.add(subObj);
+ subobjsList.add(subObj);
- offset += length;
- }
-
- return subobjsList;
+ offset += length;
}
- public static byte[] put(final List<ExplicitRouteSubobject> objsToSerialize) {
- final List<byte[]> bytesList = new ArrayList<byte[]>(objsToSerialize.size());
-
- int length = 0;
- for (final ExplicitRouteSubobject obj : objsToSerialize) {
- final byte[] bytes = put(obj);
- length += bytes.length;
- bytesList.add(bytes);
- }
+ return subobjsList;
+ }
- final byte[] retBytes = new byte[length];
+ public static byte[] put(List<ExplicitRouteSubobject> objsToSerialize) {
+ final List<byte[]> bytesList = new ArrayList<byte[]>(objsToSerialize.size());
- int offset = 0;
- for (final byte[] bytes : bytesList) {
- System.arraycopy(bytes, 0, retBytes, offset, bytes.length);
- offset += bytes.length;
- }
-
- return retBytes;
+ int length = 0;
+ for (final ExplicitRouteSubobject obj : objsToSerialize) {
+ final byte[] bytes = put(obj);
+ length += bytes.length;
+ bytesList.add(bytes);
}
- public static byte[] put(final ExplicitRouteSubobject objToSerialize) {
- int typeIndicator = 0;
-
- byte[] soContentsBytes = null;
-
- if (objToSerialize instanceof EROIPPrefixSubobject<?>
- && ((EROIPPrefixSubobject<?>) objToSerialize).getPrefix() instanceof IPv4Prefix) {
- typeIndicator = PCEPSubobjectType.IPv4_PREFIX.getIndicator();
- // soContentsBytes = EROIpPrefixSubobjectParser.put(objToSerialize);
- } else if (objToSerialize instanceof EROIPPrefixSubobject<?>
- && ((EROIPPrefixSubobject<?>) objToSerialize).getPrefix() instanceof IPv6Prefix) {
- typeIndicator = PCEPSubobjectType.IPv6_PREFIX.getIndicator();
- // soContentsBytes = EROIPv6PrefixSubobjectParser.put(objToSerialize);
- } else if (objToSerialize instanceof EROAsNumberSubobject) {
- typeIndicator = PCEPSubobjectType.AS_NUMBER.getIndicator();
- // soContentsBytes = EROAsNumberSubobjectParser.put(objToSerialize);
- } else if (objToSerialize instanceof EROUnnumberedInterfaceSubobject) {
- typeIndicator = PCEPSubobjectType.UNNUMBERED_INTERFACE_ID.getIndicator();
- soContentsBytes = EROUnnumberedInterfaceSubobjectParser.put(objToSerialize);
- } else if (objToSerialize instanceof EROLabelSubobject) {
- typeIndicator = PCEPSubobjectType.LABEL.getIndicator();
- soContentsBytes = EROLabelSubobjectParser.put((EROLabelSubobject) objToSerialize);
- } else if (objToSerialize instanceof EROExplicitExclusionRouteSubobject) {
- typeIndicator = PCEPSubobjectType.EXRS.getIndicator();
- soContentsBytes = EROExplicitExclusionRouteSubobjectParser.put((EROExplicitExclusionRouteSubobject) objToSerialize);
- } else if (objToSerialize instanceof EROPathKeyWith32PCEIDSubobject) {
- typeIndicator = PCEPSubobjectType.PK_32.getIndicator();
- soContentsBytes = EROPathKeyWith32PCEIDSubobjectParser.put((EROPathKeyWith32PCEIDSubobject) objToSerialize);
- } else if (objToSerialize instanceof EROPathKeyWith128PCEIDSubobject) {
- typeIndicator = PCEPSubobjectType.PK_128.getIndicator();
- soContentsBytes = EROPathKeyWith128PCEIDSubobjectParser.put((EROPathKeyWith128PCEIDSubobject) objToSerialize);
- } else if (objToSerialize instanceof EROProtectionSubobject) {
- typeIndicator = PCEPSubobjectType.PROTECTION.getIndicator();
- soContentsBytes = EROProtectionSubobjectParser.put((EROProtectionSubobject) objToSerialize);
- } else
- throw new IllegalArgumentException("Unknown instance of PCEPSubobject. Passed: " + objToSerialize.getClass() + ".");
-
- final byte[] bytes = new byte[SO_CONTENTS_OFFSET + soContentsBytes.length];
-
- bytes[TYPE_FLAG_F_OFFSET] = (byte) (ByteArray.cutBytes(ByteArray.intToBytes(typeIndicator), (Integer.SIZE / 8) - TYPE_FLAG_F_LENGTH)[0] | (objToSerialize.isLoose() ? 1 << 7
- : 0));
- bytes[LENGTH_F_OFFSET] = ByteArray.cutBytes(ByteArray.intToBytes(soContentsBytes.length + SO_CONTENTS_OFFSET), (Integer.SIZE / 8)
- - LENGTH_F_LENGTH)[0];
-
- System.arraycopy(soContentsBytes, 0, bytes, SO_CONTENTS_OFFSET, soContentsBytes.length);
-
- return bytes;
+ final byte[] retBytes = new byte[length];
+
+ int offset = 0;
+ for (final byte[] bytes : bytesList) {
+ System.arraycopy(bytes, 0, retBytes, offset, bytes.length);
+ offset += bytes.length;
}
- private static ExplicitRouteSubobject parseSpecificSubobject(final PCEPSubobjectType type, final byte[] soContentsBytes,
- final boolean loose_flag) throws PCEPDeserializerException {
-
- switch (type) {
- case IPv4_PREFIX:
- // return EROIpPrefixSubobjectParser.parse(soContentsBytes, loose_flag);
- case IPv6_PREFIX:
- // return EROIPv6PrefixSubobjectParser.parse(soContentsBytes, loose_flag);
- case UNNUMBERED_INTERFACE_ID:
- return EROUnnumberedInterfaceSubobjectParser.parse(soContentsBytes, loose_flag);
- case AS_NUMBER:
- // return EROAsNumberSubobjectParser.parse(soContentsBytes, loose_flag);
- case LABEL:
- return EROLabelSubobjectParser.parse(soContentsBytes, loose_flag);
- case EXRS:
- return EROExplicitExclusionRouteSubobjectParser.parse(soContentsBytes, loose_flag);
- case PK_32:
- return EROPathKeyWith32PCEIDSubobjectParser.parse(soContentsBytes, loose_flag);
- case PK_128:
- return EROPathKeyWith128PCEIDSubobjectParser.parse(soContentsBytes, loose_flag);
- case PROTECTION:
- return EROProtectionSubobjectParser.parse(soContentsBytes, loose_flag);
- default:
- throw new PCEPDeserializerException("Unknown Subobject type. Passed: " + type + ".");
- }
+ return retBytes;
+ }
+
+ public static byte[] put(ExplicitRouteSubobject objToSerialize) {
+ int typeIndicator = 0;
+
+ final byte[] soContentsBytes;
+
+ if (objToSerialize instanceof EROIPPrefixSubobject<?> && ((EROIPPrefixSubobject<?>) objToSerialize).getPrefix() instanceof IPv4Prefix) {
+ typeIndicator = PCEPSubobjectType.IPv4_PREFIX.getIndicator();
+ soContentsBytes = EROIPv4PrefixSubobjectParser.put(objToSerialize);
+ } else if (objToSerialize instanceof EROIPPrefixSubobject<?> && ((EROIPPrefixSubobject<?>) objToSerialize).getPrefix() instanceof IPv6Prefix) {
+ typeIndicator = PCEPSubobjectType.IPv6_PREFIX.getIndicator();
+ soContentsBytes = EROIPv6PrefixSubobjectParser.put(objToSerialize);
+ } else if (objToSerialize instanceof EROAsNumberSubobject) {
+ typeIndicator = PCEPSubobjectType.AS_NUMBER.getIndicator();
+ soContentsBytes = EROAsNumberSubobjectParser.put(objToSerialize);
+ } else if (objToSerialize instanceof EROUnnumberedInterfaceSubobject) {
+ typeIndicator = PCEPSubobjectType.UNNUMBERED_INTERFACE_ID.getIndicator();
+ soContentsBytes = EROUnnumberedInterfaceSubobjectParser.put(objToSerialize);
+ } else if (objToSerialize instanceof EROLabelSubobject) {
+ typeIndicator = PCEPSubobjectType.LABEL.getIndicator();
+ soContentsBytes = EROLabelSubobjectParser.put((EROLabelSubobject) objToSerialize);
+ } else if (objToSerialize instanceof EROExplicitExclusionRouteSubobject) {
+ typeIndicator = PCEPSubobjectType.EXRS.getIndicator();
+ soContentsBytes = EROExplicitExclusionRouteSubobjectParser.put((EROExplicitExclusionRouteSubobject) objToSerialize);
+ } else if (objToSerialize instanceof EROPathKeyWith32PCEIDSubobject) {
+ typeIndicator = PCEPSubobjectType.PK_32.getIndicator();
+ soContentsBytes = EROPathKeyWith32PCEIDSubobjectParser.put((EROPathKeyWith32PCEIDSubobject) objToSerialize);
+ } else if (objToSerialize instanceof EROPathKeyWith128PCEIDSubobject) {
+ typeIndicator = PCEPSubobjectType.PK_128.getIndicator();
+ soContentsBytes = EROPathKeyWith128PCEIDSubobjectParser.put((EROPathKeyWith128PCEIDSubobject) objToSerialize);
+ } else if (objToSerialize instanceof EROProtectionSubobject) {
+ typeIndicator = PCEPSubobjectType.PROTECTION.getIndicator();
+ soContentsBytes = EROProtectionSubobjectParser.put((EROProtectionSubobject) objToSerialize);
+ } else
+ throw new IllegalArgumentException("Unknown instance of PCEPSubobject. Passed: " + objToSerialize.getClass() + ".");
+
+ final byte[] bytes = new byte[SO_CONTENTS_OFFSET + soContentsBytes.length];
+
+ bytes[TYPE_FLAG_F_OFFSET] = (byte) (ByteArray.cutBytes(ByteArray.intToBytes(typeIndicator), (Integer.SIZE / 8) - TYPE_FLAG_F_LENGTH)[0] | (objToSerialize
+ .isLoose() ? 1 << 7 : 0));
+ bytes[LENGTH_F_OFFSET] = ByteArray.cutBytes(ByteArray.intToBytes(soContentsBytes.length + SO_CONTENTS_OFFSET), (Integer.SIZE / 8) - LENGTH_F_LENGTH)[0];
+
+ System.arraycopy(soContentsBytes, 0, bytes, SO_CONTENTS_OFFSET, soContentsBytes.length);
+
+ return bytes;
+ }
+
+ private static ExplicitRouteSubobject parseSpecificSubobject(PCEPSubobjectType type, byte[] soContentsBytes, boolean loose_flag)
+ throws PCEPDeserializerException {
+
+ switch (type) {
+ case IPv4_PREFIX:
+ return EROIPv4PrefixSubobjectParser.parse(soContentsBytes, loose_flag);
+ case IPv6_PREFIX:
+ return EROIPv6PrefixSubobjectParser.parse(soContentsBytes, loose_flag);
+ case UNNUMBERED_INTERFACE_ID:
+ return EROUnnumberedInterfaceSubobjectParser.parse(soContentsBytes, loose_flag);
+ case AS_NUMBER:
+ return EROAsNumberSubobjectParser.parse(soContentsBytes, loose_flag);
+ case LABEL:
+ return EROLabelSubobjectParser.parse(soContentsBytes, loose_flag);
+ case EXRS:
+ return EROExplicitExclusionRouteSubobjectParser.parse(soContentsBytes, loose_flag);
+ case PK_32:
+ return EROPathKeyWith32PCEIDSubobjectParser.parse(soContentsBytes, loose_flag);
+ case PK_128:
+ return EROPathKeyWith128PCEIDSubobjectParser.parse(soContentsBytes, loose_flag);
+ case PROTECTION:
+ return EROProtectionSubobjectParser.parse(soContentsBytes, loose_flag);
+ default:
+ throw new PCEPDeserializerException("Unknown Subobject type. Passed: " + type + ".");
}
+ }
}
Code Review / bgpcep.git / blobdiff