/* | |
* Copyright 2015 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 java.util.Objects; | |
import org.jboss.netty.buffer.ChannelBuffer; | |
import org.onosproject.pcepio.protocol.PcepVersion; | |
import org.slf4j.Logger; | |
import org.slf4j.LoggerFactory; | |
import com.google.common.base.MoreObjects; | |
import com.google.common.base.MoreObjects.ToStringHelper; | |
/** | |
* 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(); | |
} | |
} |