diff options
Diffstat (limited to 'framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpLinkAttrMaxLinkBandwidth.java')
-rw-r--r-- | framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpLinkAttrMaxLinkBandwidth.java | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpLinkAttrMaxLinkBandwidth.java b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpLinkAttrMaxLinkBandwidth.java new file mode 100644 index 00000000..2711ca94 --- /dev/null +++ b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpLinkAttrMaxLinkBandwidth.java @@ -0,0 +1,156 @@ +/* + * 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.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 attribute Max Link bandwidth. + */ +public final class BgpLinkAttrMaxLinkBandwidth implements BgpValueType { + + protected static final Logger log = LoggerFactory + .getLogger(BgpLinkAttrMaxLinkBandwidth.class); + + public static final int MAX_BANDWIDTH_LEN = 4; + public static final int NO_OF_BITS = 8; + + public short type; + + /* ISIS administrative group */ + private final float maxBandwidth; + + /** + * Constructor to initialize the values. + * + * @param maxBandwidth Maximum link bandwidth. + * @param type TLV type + */ + private BgpLinkAttrMaxLinkBandwidth(float maxBandwidth, short type) { + this.maxBandwidth = maxBandwidth; + this.type = type; + } + + /** + * Returns object of this class with specified values. + * + * @param maxBandwidth Maximum link bandwidth. + * @param type TLV type + * @return object of BgpLinkAttrMaxLinkBandwidth + */ + public static BgpLinkAttrMaxLinkBandwidth of(final float maxBandwidth, + final short type) { + return new BgpLinkAttrMaxLinkBandwidth(maxBandwidth, type); + } + + /** + * Reads the BGP link attributes of Maximum link bandwidth. + * + * @param cb Channel buffer + * @param type type of this tlv + * @return object of type BgpLinkAttrMaxLinkBandwidth + * @throws BgpParseException while parsing BgpLinkAttrMaxLinkBandwidth + */ + public static BgpLinkAttrMaxLinkBandwidth read(ChannelBuffer cb, short type) + throws BgpParseException { + float maxBandwidth; + short lsAttrLength = cb.readShort(); + + if ((lsAttrLength != MAX_BANDWIDTH_LEN) + || (cb.readableBytes() < lsAttrLength)) { + Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, + BgpErrorType.ATTRIBUTE_LENGTH_ERROR, + lsAttrLength); + } + + maxBandwidth = ieeeToFloatRead(cb.readInt()) * NO_OF_BITS; + + return BgpLinkAttrMaxLinkBandwidth.of(maxBandwidth, type); + } + + /** + * Returns Maximum link bandwidth. + * + * @return Maximum link bandwidth + */ + float linkAttrMaxLinkBandwidth() { + return maxBandwidth; + } + + /** + * 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.type; + } + + @Override + public int hashCode() { + return Objects.hash(maxBandwidth); + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + + if (obj instanceof BgpLinkAttrMaxLinkBandwidth) { + BgpLinkAttrMaxLinkBandwidth other = (BgpLinkAttrMaxLinkBandwidth) obj; + return Objects.equals(maxBandwidth, other.maxBandwidth); + } + 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()) + .add("maxBandwidth", maxBandwidth).toString(); + } + + @Override + public int compareTo(Object o) { + // TODO Auto-generated method stub + return 0; + } +} |