| /* |
| * 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.PcepNai; |
| import org.onosproject.pcepio.protocol.PcepVersion; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.base.MoreObjects; |
| |
| /** |
| * Provides SrEroSubObject. |
| */ |
| public class SrEroSubObject implements PcepValueType { |
| /* |
| SR-ERO subobject: (draft-ietf-pce-segment-routing-00) |
| 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 |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |L| Type | Length | ST | Flags |F|S|C|M| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | SID | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| // NAI (variable) // |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| |
| |
| NAI |
| |
| 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 |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Local IPv4 address | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Remote IPv4 address | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| NAI for IPv4 Adjacency |
| |
| 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 |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| // Local IPv6 address (16 bytes) // |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| // Remote IPv6 address (16 bytes) // |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| NAI for IPv6 adjacency |
| |
| 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 |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Local Node-ID | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Local Interface ID | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Remote Node-ID | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Remote Interface ID | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| NAI for Unnumbered adjacency with IPv4 Node IDs |
| |
| */ |
| protected static final Logger log = LoggerFactory.getLogger(SrEroSubObject.class); |
| |
| public static final short TYPE = 0x60; //TODO : type to be defined |
| public static final short LENGTH = 12; |
| public static final short VALUE_LENGTH = 10; |
| public static final int SET = 1; |
| public static final byte MFLAG_SET = 0x01; |
| public static final byte CFLAG_SET = 0x02; |
| public static final byte SFLAG_SET = 0x04; |
| public static final byte FFLAG_SET = 0x08; |
| public static final byte SHIFT_ST = 12; |
| |
| private final boolean bFFlag; |
| private final boolean bSFlag; |
| private final boolean bCFlag; |
| private final boolean bMFlag; |
| private final byte st; |
| |
| private final int sID; |
| private final PcepNai nai; |
| |
| /** |
| * Constructor to initialize member variables. |
| * |
| * @param st SID type |
| * @param bFFlag F flag |
| * @param bSFlag S flag |
| * @param bCFlag C flag |
| * @param bMFlag M flag |
| * @param sID segment identifier value |
| * @param nai NAI associated with SID |
| */ |
| public SrEroSubObject(byte st, boolean bFFlag, boolean bSFlag, boolean bCFlag, boolean bMFlag, int sID, |
| PcepNai nai) { |
| this.st = st; |
| this.bFFlag = bFFlag; |
| this.bSFlag = bSFlag; |
| this.bCFlag = bCFlag; |
| this.bMFlag = bMFlag; |
| this.sID = sID; |
| this.nai = nai; |
| } |
| |
| /** |
| * Creates object of SrEroSubObject. |
| * |
| * @param st SID type |
| * @param bFFlag F flag |
| * @param bSFlag S flag |
| * @param bCFlag C flag |
| * @param bMFlag M flag |
| * @param sID segment identifier value |
| * @param nai NAI associated with SID |
| * @return object of SrEroSubObject |
| */ |
| public static SrEroSubObject of(byte st, boolean bFFlag, boolean bSFlag, boolean bCFlag, boolean bMFlag, int sID, |
| PcepNai nai) { |
| return new SrEroSubObject(st, bFFlag, bSFlag, bCFlag, bMFlag, sID, nai); |
| } |
| |
| /** |
| * Returns SID type. |
| * @return st sid type |
| */ |
| public byte getSt() { |
| return st; |
| } |
| |
| /** |
| * Returns bFFlag. |
| * @return bFFlag |
| */ |
| public boolean getFFlag() { |
| return bFFlag; |
| } |
| |
| /** |
| * Returns bSFlag. |
| * @return bSFlag |
| */ |
| public boolean getSFlag() { |
| return bSFlag; |
| } |
| |
| /** |
| * Returns bCFlag. |
| * @return bCFlag |
| */ |
| public boolean getCFlag() { |
| return bCFlag; |
| } |
| |
| /** |
| * Returns bMFlag. |
| * @return bMFlag |
| */ |
| public boolean getMFlag() { |
| return bMFlag; |
| } |
| |
| /** |
| * Returns sID. |
| * @return sID |
| */ |
| public int getSID() { |
| return sID; |
| } |
| |
| /** |
| * Returns nai. |
| * @return nai |
| */ |
| public PcepNai getNai() { |
| return nai; |
| } |
| |
| @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(st, bFFlag, bSFlag, bCFlag, bMFlag, sID, nai); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof SrEroSubObject) { |
| SrEroSubObject other = (SrEroSubObject) obj; |
| return Objects.equals(this.st, other.st) && Objects.equals(this.bFFlag, other.bFFlag) |
| && Objects.equals(this.bSFlag, other.bSFlag) && Objects.equals(this.bCFlag, other.bCFlag) |
| && Objects.equals(this.bMFlag, other.bMFlag) && Objects.equals(this.sID, other.sID) |
| && Objects.equals(this.nai, other.nai); |
| } |
| return false; |
| } |
| |
| @Override |
| public int write(ChannelBuffer c) { |
| int iLenStartIndex = c.writerIndex(); |
| |
| c.writeShort(TYPE); |
| c.writeShort(LENGTH); |
| |
| short temp = 0; |
| if (bMFlag) { |
| temp = (short) (temp | MFLAG_SET); |
| } |
| if (bCFlag) { |
| temp = (short) (temp | CFLAG_SET); |
| } |
| if (bSFlag) { |
| temp = (short) (temp | SFLAG_SET); |
| } |
| if (bFFlag) { |
| temp = (short) (temp | FFLAG_SET); |
| } |
| short tempST = (short) (st << SHIFT_ST); |
| temp = (short) (temp | tempST); |
| c.writeShort(temp); |
| c.writeInt(sID); |
| nai.write(c); |
| |
| return c.writerIndex() - iLenStartIndex; |
| } |
| |
| /** |
| * Reads the channel buffer and returns object of SrEroSubObject. |
| * @param c of type channel buffer |
| * @return object of SrEroSubObject |
| */ |
| public static PcepValueType read(ChannelBuffer c) { |
| short temp = c.readShort(); |
| boolean bMFlag; |
| boolean bCFlag; |
| boolean bSFlag; |
| boolean bFFlag; |
| byte st; |
| PcepNai nai = null; |
| |
| bMFlag = (temp & MFLAG_SET) == MFLAG_SET; |
| bCFlag = (temp & CFLAG_SET) == CFLAG_SET; |
| bSFlag = (temp & SFLAG_SET) == SFLAG_SET; |
| bFFlag = (temp & FFLAG_SET) == FFLAG_SET; |
| |
| st = (byte) (temp >> SHIFT_ST); |
| |
| int sID = c.readInt(); |
| switch (st) { |
| case 0x01: |
| nai = PcepNaiIpv4NodeId.read(c); |
| break; |
| case 0x02: |
| nai = PcepNaiIpv6NodeId.read(c); |
| break; |
| case 0x03: |
| nai = PcepNaiIpv4Adjacency.read(c); |
| break; |
| case 0x04: |
| nai = PcepNaiIpv6Adjacency.read(c); |
| break; |
| case 0x05: |
| nai = PcepNaiUnnumberedAdjacencyIpv4.read(c); |
| break; |
| default: |
| nai = null; |
| break; |
| } |
| |
| return new SrEroSubObject(st, bFFlag, bSFlag, bCFlag, bMFlag, sID, nai); |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .add("Type", TYPE) |
| .add("Length", LENGTH) |
| .add("st", st) |
| .add("bFflag", bFFlag) |
| .add("bSFlag", bSFlag) |
| .add("bCFlag", bCFlag) |
| .add("bMFlag", bMFlag) |
| .add("sID", sID) |
| .add("nAI", nai) |
| .toString(); |
| } |
| } |