*/
package org.opendaylight.protocol.concepts;
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Lists;
+import com.google.common.net.InetAddresses;
+import com.google.common.primitives.Bytes;
+import com.google.common.primitives.UnsignedBytes;
+
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.UnknownHostException;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv6Address;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv6Prefix;
-import com.google.common.base.Preconditions;
-import com.google.common.collect.Lists;
-import com.google.common.net.InetAddresses;
-import com.google.common.primitives.Bytes;
-import com.google.common.primitives.UnsignedBytes;
-
/**
* Util class for creating generated Ipv6Address.
*/
public final class Ipv6Util {
- private Ipv6Util() {
- }
+ private Ipv6Util() {
+ }
- public static final int IPV6_LENGTH = 16;
+ public static final int IPV6_LENGTH = 16;
- /**
- * Converts byte array to Inet6Address.
- *
- * @param bytes to be converted
- * @return InetAddress instance
- * @throws IllegalArgumentException if {@link UnknownHostException} is thrown.
- */
- private static InetAddress getAddress(final byte[] bytes) {
- try {
- return Inet6Address.getByAddress(bytes);
- } catch (final UnknownHostException e) {
- throw new IllegalArgumentException("Failed to construct IPv6 address", e);
- }
- }
+ /**
+ * Converts byte array to Inet6Address.
+ *
+ * @param bytes to be converted
+ * @return InetAddress instance
+ * @throws IllegalArgumentException if {@link UnknownHostException} is thrown.
+ */
+ private static InetAddress getAddress(final byte[] bytes) {
+ try {
+ return Inet6Address.getByAddress(bytes);
+ } catch (final UnknownHostException e) {
+ throw new IllegalArgumentException("Failed to construct IPv6 address", e);
+ }
+ }
- /**
- * Converts byte array to Ipv6Address.
- *
- * @param bytes to be converted to Ipv6Address
- * @return Ipv6Address
- */
- public static Ipv6Address addressForBytes(final byte[] bytes) {
- return new Ipv6Address(InetAddresses.toAddrString(getAddress(bytes)));
- }
+ /**
+ * Converts byte array to Ipv6Address.
+ *
+ * @param bytes to be converted to Ipv6Address
+ * @return Ipv6Address
+ */
+ public static Ipv6Address addressForBytes(final byte[] bytes) {
+ return new Ipv6Address(InetAddresses.toAddrString(getAddress(bytes)));
+ }
- /**
- * Converts Ipv6Address to byte array.
- *
- * @param address Ipv6Address to be converted
- * @return byte array
- */
- public static byte[] bytesForAddress(final Ipv6Address address) {
- final InetAddress a = InetAddresses.forString(address.getValue());
- Preconditions.checkArgument(a instanceof Inet6Address);
- return a.getAddress();
- }
+ /**
+ * Converts Ipv6Address to byte array.
+ *
+ * @param address Ipv6Address to be converted
+ * @return byte array
+ */
+ public static byte[] bytesForAddress(final Ipv6Address address) {
+ final InetAddress a = InetAddresses.forString(address.getValue());
+ Preconditions.checkArgument(a instanceof Inet6Address);
+ return a.getAddress();
+ }
- /**
- * Converts Ipv6Prefix to byte array.
- *
- * @param prefix Ipv6Prefix to be converted
- * @return byte array
- */
- public static byte[] bytesForPrefix(final Ipv6Prefix prefix) {
- final String p = prefix.getValue();
- final int sep = p.indexOf('/');
- final InetAddress a = InetAddresses.forString(p.substring(0, sep));
- Preconditions.checkArgument(a instanceof Inet6Address);
- final byte[] bytes = a.getAddress();
- return Bytes.concat(bytes, new byte[] { Byte.valueOf(p.substring(sep + 1, p.length())) });
- }
+ /**
+ * Converts Ipv6Prefix to byte array.
+ *
+ * @param prefix Ipv6Prefix to be converted
+ * @return byte array
+ */
+ public static byte[] bytesForPrefix(final Ipv6Prefix prefix) {
+ final String p = prefix.getValue();
+ final int sep = p.indexOf('/');
+ final InetAddress a = InetAddresses.forString(p.substring(0, sep));
+ Preconditions.checkArgument(a instanceof Inet6Address);
+ final byte[] bytes = a.getAddress();
+ return Bytes.concat(bytes, new byte[] { Byte.valueOf(p.substring(sep + 1, p.length())) });
+ }
- /**
- * Creates an Ipv6Prefix object from given byte array.
- *
- * @param bytes IPv6 address
- * @param length prefix length
- * @return Ipv6Prefix object
- */
- public static Ipv6Prefix prefixForBytes(final byte[] bytes, final int length) {
- Preconditions.checkArgument(length <= bytes.length * Byte.SIZE);
- final byte[] tmp = Arrays.copyOfRange(bytes, 0, IPV6_LENGTH);
- final InetAddress a = getAddress(tmp);
- return new Ipv6Prefix(InetAddresses.toAddrString(a) + '/' + length);
- }
+ /**
+ * Creates an Ipv6Prefix object from given byte array.
+ *
+ * @param bytes IPv6 address
+ * @param length prefix length
+ * @return Ipv6Prefix object
+ */
+ public static Ipv6Prefix prefixForBytes(final byte[] bytes, final int length) {
+ Preconditions.checkArgument(length <= bytes.length * Byte.SIZE);
+ final byte[] tmp = Arrays.copyOfRange(bytes, 0, IPV6_LENGTH);
+ final InetAddress a = getAddress(tmp);
+ return new Ipv6Prefix(InetAddresses.toAddrString(a) + '/' + length);
+ }
- /**
- * Creates a list of Ipv6 Prefixes from given byte array.
- *
- * @param bytes to be converted to List of Ipv6Prefixes.
- * @return List<Ipv6Prefix>
- */
- public static List<Ipv6Prefix> prefixListForBytes(final byte[] bytes) {
- if (bytes.length == 0) {
- return Collections.emptyList();
- }
+ /**
+ * Creates a list of Ipv6 Prefixes from given byte array.
+ *
+ * @param bytes to be converted to List of Ipv6Prefixes.
+ * @return List<Ipv6Prefix>
+ */
+ public static List<Ipv6Prefix> prefixListForBytes(final byte[] bytes) {
+ if (bytes.length == 0) {
+ return Collections.emptyList();
+ }
- final List<Ipv6Prefix> list = Lists.newArrayList();
- int byteOffset = 0;
- while (byteOffset < bytes.length) {
- final int bitLength = UnsignedBytes.toInt(ByteArray.subByte(bytes, byteOffset, 1)[0]);
- byteOffset += 1;
- final int byteCount = (bitLength % Byte.SIZE != 0) ? (bitLength / Byte.SIZE) + 1 : bitLength / Byte.SIZE;
- list.add(prefixForBytes(ByteArray.subByte(bytes, byteOffset, byteCount), bitLength));
- byteOffset += byteCount;
- }
- return list;
- }
+ final List<Ipv6Prefix> list = Lists.newArrayList();
+ int byteOffset = 0;
+ while (byteOffset < bytes.length) {
+ final int bitLength = UnsignedBytes.toInt(ByteArray.subByte(bytes, byteOffset, 1)[0]);
+ byteOffset += 1;
+ final int byteCount = (bitLength % Byte.SIZE != 0) ? (bitLength / Byte.SIZE) + 1 : bitLength / Byte.SIZE;
+ list.add(prefixForBytes(ByteArray.subByte(bytes, byteOffset, byteCount), bitLength));
+ byteOffset += byteCount;
+ }
+ return list;
+ }
}
Code Review / bgpcep.git / blobdiff