| /* |
| * Copyright 2015-present Open Networking Laboratory |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.onosproject.pcepio.types; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.base.MoreObjects.ToStringHelper; |
| import org.jboss.netty.buffer.ChannelBuffer; |
| import org.onosproject.pcepio.protocol.PcepVersion; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.Objects; |
| |
| /** |
| * NexthopIPv6addressTlv provides Ipv6 address of next hop. |
| */ |
| public class NexthopIPv6addressTlv implements PcepValueType { |
| |
| /* |
| Reference: draft-zhao-pce-pcep-extension-for-pce-controller-01. |
| |
| 0 1 2 3 |
| 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Type=TBD | Length = 20 | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | | |
| // nexthop IPv6 address (16 bytes) // |
| | | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| NEXTHOP-IPV6-ADDRESS TLV: |
| |
| */ |
| protected static final Logger log = LoggerFactory.getLogger(NexthopIPv6addressTlv.class); |
| |
| public static final short TYPE = 100; //to be defined |
| //Length is header + value |
| public static final short LENGTH = 20; |
| public static final short VALUE_LENGTH = 16; |
| |
| private static final byte[] NONE_VAL = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; |
| public static final NexthopIPv6addressTlv NONE = new NexthopIPv6addressTlv(NONE_VAL); |
| |
| private static final byte[] NO_MASK_VAL = {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, |
| (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, |
| (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF }; |
| public static final NexthopIPv6addressTlv NO_MASK = new NexthopIPv6addressTlv(NO_MASK_VAL); |
| public static final NexthopIPv6addressTlv FULL_MASK = NONE; |
| |
| private final byte[] rawValue; |
| |
| /** |
| * Constructor to initialize IP address for next hop IPv6 address tlv. |
| * |
| * @param rawValue value of Next hop ipAddress |
| */ |
| public NexthopIPv6addressTlv(byte[] rawValue) { |
| log.debug("NexthopIPv6addressTlv"); |
| this.rawValue = rawValue; |
| } |
| |
| /** |
| * Creates next hop IPv6 address tlv. |
| * |
| * @param raw value of Next hop ipAddress |
| * @return object of NexthopIPv6addressTlv |
| */ |
| //logic to be checked |
| public static NexthopIPv6addressTlv of(final byte[] raw) { |
| //check NONE_VAL |
| boolean bFoundNone = true; |
| //value starts from 3rd byte. |
| for (int i = 5; i < 20; ++i) { |
| if (NONE_VAL[i] != raw[i]) { |
| bFoundNone = false; |
| } |
| } |
| |
| if (bFoundNone) { |
| return NONE; |
| } |
| |
| //check NO_MASK_VAL |
| boolean bFoundNoMask = true; |
| //value starts from 3rd byte. |
| for (int i = 5; i < 20; ++i) { |
| if (0xFF != raw[i]) { |
| bFoundNoMask = false; |
| } |
| } |
| if (bFoundNoMask) { |
| return NO_MASK; |
| } |
| return new NexthopIPv6addressTlv(raw); |
| } |
| |
| /** |
| * Returns next hop IPv6 address. |
| * |
| * @return next hop IPv6 address |
| */ |
| public byte[] getBytes() { |
| return rawValue; |
| } |
| |
| @Override |
| public PcepVersion getVersion() { |
| return PcepVersion.PCEP_1; |
| } |
| |
| @Override |
| public short getType() { |
| return TYPE; |
| } |
| |
| @Override |
| public short getLength() { |
| return LENGTH; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(rawValue); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof NexthopIPv6addressTlv) { |
| NexthopIPv6addressTlv other = (NexthopIPv6addressTlv) obj; |
| return Objects.equals(this.rawValue, other.rawValue); |
| } |
| return false; |
| } |
| |
| @Override |
| public int write(ChannelBuffer c) { |
| int iStartIndex = c.writerIndex(); |
| c.writeShort(TYPE); |
| c.writeShort(LENGTH); |
| c.writeBytes(rawValue); |
| return c.writerIndex() - iStartIndex; |
| } |
| |
| /** |
| * Reads the channel buffer and returns object of NexthopIPv6addressTlv. |
| * |
| * @param c type of channel buffer |
| * @return object of NexthopIPv6addressTlv |
| */ |
| public static NexthopIPv6addressTlv read(ChannelBuffer c) { |
| byte[] yTemp = new byte[20]; |
| c.readBytes(yTemp, 0, 20); |
| return NexthopIPv6addressTlv.of(yTemp); |
| } |
| |
| @Override |
| public String toString() { |
| ToStringHelper toStrHelper = MoreObjects.toStringHelper(getClass()); |
| |
| toStrHelper.add("Type", TYPE); |
| toStrHelper.add("Length", LENGTH); |
| |
| StringBuffer result = new StringBuffer(); |
| for (byte b : rawValue) { |
| result.append(String.format("%02X ", b)); |
| } |
| toStrHelper.add("IpAddress", result); |
| |
| return toStrHelper.toString(); |
| } |
| } |