| /* |
| * 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.bgpio.types.attr; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Objects; |
| |
| import org.jboss.netty.buffer.ChannelBuffer; |
| import org.onosproject.bgpio.exceptions.BgpParseException; |
| import org.onosproject.bgpio.types.BgpErrorType; |
| import org.onosproject.bgpio.types.BgpValueType; |
| import org.onosproject.bgpio.util.Validation; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.base.MoreObjects; |
| |
| /** |
| * Implements BGP unreserved bandwidth attribute. |
| */ |
| public class BgpLinkAttrUnRsrvdLinkBandwidth implements BgpValueType { |
| |
| protected static final Logger log = LoggerFactory |
| .getLogger(BgpLinkAttrUnRsrvdLinkBandwidth.class); |
| |
| public static final int MAX_BANDWIDTH_LEN = 4; |
| public static final int NO_OF_BITS = 8; |
| public static final int NO_OF_PRIORITY = 8; |
| |
| public short sType; |
| |
| /* ISIS administrative group */ |
| private List<Float> maxUnResBandwidth = new ArrayList<Float>(); |
| |
| /** |
| * Constructor to initialize the values. |
| * |
| * @param maxUnResBandwidth Maximum Unreserved bandwidth |
| * @param sType returns the tag value |
| */ |
| public BgpLinkAttrUnRsrvdLinkBandwidth(List<Float> maxUnResBandwidth, |
| short sType) { |
| this.maxUnResBandwidth = maxUnResBandwidth; |
| this.sType = sType; |
| } |
| |
| /** |
| * Returns object of this class with specified values. |
| * |
| * @param linkPfxMetric Prefix Metric |
| * @param sType returns the tag value |
| * @return object of BgpLinkAttrUnRsrvdLinkBandwidth |
| */ |
| public static BgpLinkAttrUnRsrvdLinkBandwidth of(List<Float> linkPfxMetric, short sType) { |
| return new BgpLinkAttrUnRsrvdLinkBandwidth(linkPfxMetric, sType); |
| } |
| |
| /** |
| * Reads the BGP link attributes of Maximum link bandwidth. |
| * |
| * @param cb Channel buffer |
| * @param sType returns the tag value |
| * @return object of type BgpLinkAttrMaxLinkBandwidth |
| * @throws BgpParseException while parsing BgpLinkAttrMaxLinkBandwidth |
| */ |
| public static BgpLinkAttrUnRsrvdLinkBandwidth read(ChannelBuffer cb, |
| short sType) |
| throws BgpParseException { |
| ArrayList<Float> maxUnResBandwidth = new ArrayList<Float>(); |
| float tmp; |
| short lsAttrLength = cb.readShort(); |
| |
| if ((lsAttrLength != MAX_BANDWIDTH_LEN * NO_OF_PRIORITY) |
| || (cb.readableBytes() < lsAttrLength)) { |
| Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, |
| BgpErrorType.ATTRIBUTE_LENGTH_ERROR, |
| lsAttrLength); |
| } |
| |
| for (int i = 0; i < NO_OF_PRIORITY; i++) { |
| tmp = ieeeToFloatRead(cb.readInt()) * NO_OF_BITS; |
| maxUnResBandwidth.add(new Float(tmp)); |
| } |
| |
| return BgpLinkAttrUnRsrvdLinkBandwidth.of(maxUnResBandwidth, sType); |
| } |
| |
| /** |
| * Returns maximum unreserved bandwidth. |
| * |
| * @return unreserved bandwidth. |
| */ |
| public List<Float> getLinkAttrUnRsrvdLinkBandwidth() { |
| return maxUnResBandwidth; |
| } |
| |
| /** |
| * Parse the IEEE floating point notation and returns it in normal float. |
| * |
| * @param iVal IEEE floating point number |
| * @return normal float |
| */ |
| static float ieeeToFloatRead(int iVal) { |
| iVal = (((iVal & 0xFF) << 24) | ((iVal & 0xFF00) << 8) |
| | ((iVal & 0xFF0000) >> 8) | ((iVal >> 24) & 0xFF)); |
| |
| return Float.intBitsToFloat(iVal); |
| } |
| |
| @Override |
| public short getType() { |
| return this.sType; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(maxUnResBandwidth); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| |
| if (obj instanceof BgpLinkAttrUnRsrvdLinkBandwidth) { |
| BgpLinkAttrUnRsrvdLinkBandwidth other = (BgpLinkAttrUnRsrvdLinkBandwidth) obj; |
| return Objects.equals(maxUnResBandwidth, other.maxUnResBandwidth); |
| } |
| return false; |
| } |
| |
| @Override |
| public int write(ChannelBuffer cb) { |
| // TODO This will be implemented in the next version |
| return 0; |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()).omitNullValues() |
| .add("maxUnResBandwidth", maxUnResBandwidth).toString(); |
| } |
| |
| @Override |
| public int compareTo(Object o) { |
| // TODO Auto-generated method stub |
| return 0; |
| } |
| } |