Bharat saraswal | 3077717 | 2015-08-21 15:51:10 +0530 | [diff] [blame] | 1 | /*
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| 2 | * Copyright 2015 Open Networking Laboratory
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 |
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| 17 | package org.onosproject.pcepio.types;
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| 18 |
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| 19 | import java.util.Objects;
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| 20 |
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| 21 | import org.jboss.netty.buffer.ChannelBuffer;
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| 22 | import org.onosproject.pcepio.protocol.PcepVersion;
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| 23 | import org.slf4j.Logger;
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| 24 | import org.slf4j.LoggerFactory;
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| 25 |
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| 26 | import com.google.common.base.MoreObjects;
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| 27 |
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| 28 | /**
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| 29 | * NexthopIPv6addressTlv provides Ipv4 address of next hop.
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| 30 | */
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| 31 | public class NexthopIPv4addressTlv implements PcepValueType {
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| 32 |
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| 33 | /*
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| 34 | Reference :draft-zhao-pce-pcep-extension-for-pce-controller-01
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| 35 |
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| 36 | 0 1 2 3
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| 37 | 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
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| 38 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 39 | | Type=TBD | Length = 8 |
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| 40 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 41 | | nexthop IPv4 address |
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| 42 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 43 |
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| 44 | NEXTHOP-IPV4-ADDRESS TLV
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| 45 |
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| 46 | */
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| 47 | protected static final Logger log = LoggerFactory.getLogger(NexthopIPv4addressTlv.class);
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| 48 |
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| 49 | public static final short TYPE = 2; //to be defined
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| 50 | //Length is header + value
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| 51 | public static final short LENGTH = 8;
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| 52 | public static final short VALUE_LENGTH = 4;
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| 53 |
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| 54 | private final int rawValue;
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| 55 |
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| 56 | /**
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| 57 | * Constructor to initialize next hop IPv4 address.
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| 58 | *
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| 59 | * @param rawValue next hop IPv4 address
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| 60 | */
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| 61 | public NexthopIPv4addressTlv(int rawValue) {
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| 62 | this.rawValue = rawValue;
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| 63 | }
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| 64 |
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| 65 | /**
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| 66 | * Return next hop IPv4 address tlv.
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| 67 | *
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| 68 | * @param raw of next hop IPv4 address
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| 69 | * @return object of NexthopIPv4addressTlv
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| 70 | */
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| 71 | public static NexthopIPv4addressTlv of(final int raw) {
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| 72 | return new NexthopIPv4addressTlv(raw);
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| 73 | }
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| 74 |
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| 75 | /**
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| 76 | * Returns next hop IPv4 address.
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| 77 | *
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| 78 | * @return next hop IPv4 address
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| 79 | */
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| 80 | public int getInt() {
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| 81 | return rawValue;
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| 82 | }
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| 83 |
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| 84 | @Override
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| 85 | public PcepVersion getVersion() {
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| 86 | return PcepVersion.PCEP_1;
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| 87 | }
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| 88 |
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| 89 | @Override
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| 90 | public short getType() {
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| 91 | return TYPE;
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| 92 | }
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| 93 |
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| 94 | @Override
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| 95 | public short getLength() {
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| 96 | return LENGTH;
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| 97 | }
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| 98 |
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| 99 | @Override
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| 100 | public int hashCode() {
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| 101 | return Objects.hash(rawValue);
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| 102 | }
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| 103 |
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| 104 | @Override
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| 105 | public boolean equals(Object obj) {
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| 106 | if (this == obj) {
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| 107 | return true;
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| 108 | }
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| 109 | if (obj instanceof NexthopIPv4addressTlv) {
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| 110 | NexthopIPv4addressTlv other = (NexthopIPv4addressTlv) obj;
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| 111 | return Objects.equals(this.rawValue, other.rawValue);
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| 112 | }
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| 113 | return false;
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| 114 | }
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| 115 |
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| 116 | @Override
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| 117 | public int write(ChannelBuffer c) {
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| 118 | int iStartIndex = c.writerIndex();
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| 119 | c.writeShort(TYPE);
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| 120 | c.writeShort(LENGTH);
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| 121 | c.writeInt(rawValue);
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| 122 | return c.writerIndex() - iStartIndex;
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| 123 | }
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| 124 |
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| 125 | /**
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| 126 | * Reads the channel buffer and returns object of NexthopIPv4addressTlv.
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| 127 | *
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| 128 | * @param c type of channel buffer
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| 129 | * @return object of NexthopIPv4addressTlv
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| 130 | */
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| 131 | public static NexthopIPv4addressTlv read(ChannelBuffer c) {
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| 132 | return NexthopIPv4addressTlv.of(c.readInt());
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| 133 | }
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| 134 |
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| 135 | @Override
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| 136 | public String toString() {
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| 137 | return MoreObjects.toStringHelper(getClass())
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| 138 | .add("Type", TYPE)
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| 139 | .add("Length", LENGTH)
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| 140 | .add("Ipv4Address ", rawValue)
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| 141 | .toString();
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| 142 | }
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| 143 | }
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