| /* |
| * 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 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; |
| |
| /** |
| * Path Key SubObject: When a PCC needs to expand a path-key in order to expand a CPS, it |
| * issues a Path Computation Request (PCReq) to the PCE identified in |
| * the PKS in the RSVP-TE ERO that it is processing. The PCC supplies |
| * the PKS to be expanded in a PATH-KEY SubObject in the PCReq message. |
| */ |
| public class PathKeySubObject implements PcepValueType { |
| |
| /* |
| Pathkey subobject(RFC 5520): |
| 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 | Path-Key | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | PCE ID (4 bytes) | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| |
| protected static final Logger log = LoggerFactory.getLogger(PathKeySubObject.class); |
| |
| public static final byte TYPE = 0x40; |
| public static final byte LENGTH = 8; |
| private final short pathKey; |
| private final int pceID; |
| |
| /** |
| * Constructor for Path Key sub Object which initializes pathKey and pceId. |
| * |
| * @param pathKey path key provided by PCC |
| * @param pceID ID for the PCE |
| */ |
| public PathKeySubObject(short pathKey, int pceID) { |
| this.pathKey = pathKey; |
| this.pceID = pceID; |
| } |
| |
| /** |
| * Creates Path Key sub Object which initializes pathKey and pceId. |
| * |
| * @param pathKey path key provided by PCC |
| * @param pceID PCE id |
| * @return new object of type path key sub object |
| */ |
| public static PathKeySubObject of(short pathKey, int pceID) { |
| return new PathKeySubObject(pathKey, pceID); |
| } |
| |
| /** |
| * Returns Path Key. |
| * |
| * @return pathKey |
| */ |
| public short getPathKey() { |
| return pathKey; |
| } |
| |
| /** |
| * Returns pceID. |
| * |
| * @return pceID |
| */ |
| public int getPceId() { |
| return pceID; |
| } |
| |
| @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(pathKey, pceID); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof PathKeySubObject) { |
| PathKeySubObject other = (PathKeySubObject) obj; |
| return Objects.equals(this.pathKey, other.pathKey) && Objects.equals(this.pceID, other.pceID); |
| } |
| return false; |
| } |
| |
| @Override |
| public int write(ChannelBuffer c) { |
| int iLenStartIndex = c.writerIndex(); |
| c.writeShort(TYPE); |
| c.writeShort(LENGTH); |
| |
| c.writeShort(pathKey); |
| c.writeInt(pceID); |
| |
| return c.writerIndex() - iLenStartIndex; |
| } |
| |
| /** |
| * Reads the channel buffer and returns new path key sub objects. |
| * |
| * @param c of type channel buffer |
| * @return object of type path key sub object |
| */ |
| public static PcepValueType read(ChannelBuffer c) { |
| Short pathKey = c.readShort(); |
| int pceID = c.readInt(); |
| return new PathKeySubObject(pathKey, pceID); |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .add("Type", TYPE) |
| .add("Length", LENGTH) |
| .add("PathKey", pathKey) |
| .add("PceID", pceID) |
| .toString(); |
| } |
| } |