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/*
* 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 link protection type attribute.
*/
public final class BgpLinkAttrProtectionType implements BGPValueType {
protected static final Logger log = LoggerFactory
.getLogger(BgpLinkAttrProtectionType.class);
public static final int ATTRLINK_PROTECTIONTYPE = 1093;
public static final int LINK_PROTECTION_LEN = 2;
public static final int EXTRA_TRAFFIC = 0x01;
public static final int UNPROTECTED = 0x02;
public static final int SHARED = 0x04;
public static final int DEDICATED_ONE_ISTO_ONE = 0x08;
public static final int DEDICATED_ONE_PLUS_ONE = 0x10;
public static final int ENHANCED = 0x20;
/* Link Protection type flags */
private final boolean bExtraTraffic;
private final boolean bUnprotected;
private final boolean bShared;
private final boolean bDedOneIstoOne;
private final boolean bDedOnePlusOne;
private final boolean bEnhanced;
/**
* Constructor to initialize the value.
*
* @param bExtraTraffic Extra Traffic
* @param bUnprotected Unprotected
* @param bShared Shared
* @param bDedOneIstoOne Dedicated 1:1
* @param bDedOnePlusOne Dedicated 1+1
* @param bEnhanced Enhanced
*/
private BgpLinkAttrProtectionType(boolean bExtraTraffic,
boolean bUnprotected,
boolean bShared, boolean bDedOneIstoOne,
boolean bDedOnePlusOne, boolean bEnhanced) {
this.bExtraTraffic = bExtraTraffic;
this.bUnprotected = bUnprotected;
this.bShared = bShared;
this.bDedOneIstoOne = bDedOneIstoOne;
this.bDedOnePlusOne = bDedOnePlusOne;
this.bEnhanced = bEnhanced;
}
/**
* Returns object of this class with specified values.
*
* @param bExtraTraffic Extra Traffic
* @param bUnprotected Unprotected
* @param bShared Shared
* @param bDedOneIstoOne Dedicated 1:1
* @param bDedOnePlusOne Dedicated 1+1
* @param bEnhanced Enhanced
* @return object of BgpLinkAttrProtectionType
*/
public static BgpLinkAttrProtectionType of(boolean bExtraTraffic,
boolean bUnprotected,
boolean bShared,
boolean bDedOneIstoOne,
boolean bDedOnePlusOne,
boolean bEnhanced) {
return new BgpLinkAttrProtectionType(bExtraTraffic, bUnprotected,
bShared, bDedOneIstoOne,
bDedOnePlusOne, bEnhanced);
}
/**
* Reads the BGP link attributes protection type.
*
* @param cb Channel buffer
* @return object of type BgpLinkAttrProtectionType
* @throws BGPParseException while parsing BgpLinkAttrProtectionType
*/
public static BgpLinkAttrProtectionType read(ChannelBuffer cb)
throws BGPParseException {
short linkProtectionType;
byte higherByte;
short lsAttrLength = cb.readShort();
boolean bExtraTraffic;
boolean bUnprotected;
boolean bShared;
boolean bDedOneIstoOne;
boolean bDedOnePlusOne;
boolean bEnhanced;
if ((lsAttrLength != LINK_PROTECTION_LEN)
|| (cb.readableBytes() < lsAttrLength)) {
Validation.validateLen(BGPErrorType.UPDATE_MESSAGE_ERROR,
BGPErrorType.ATTRIBUTE_LENGTH_ERROR,
lsAttrLength);
}
linkProtectionType = cb.readShort();
higherByte = (byte) (linkProtectionType >> 8);
bExtraTraffic = ((higherByte & (byte) EXTRA_TRAFFIC) == EXTRA_TRAFFIC);
bUnprotected = ((higherByte & (byte) UNPROTECTED) == UNPROTECTED);
bShared = ((higherByte & (byte) SHARED) == SHARED);
bDedOneIstoOne = ((higherByte & (byte) DEDICATED_ONE_ISTO_ONE) == DEDICATED_ONE_ISTO_ONE);
bDedOnePlusOne = ((higherByte & (byte) DEDICATED_ONE_PLUS_ONE) == DEDICATED_ONE_PLUS_ONE);
bEnhanced = ((higherByte & (byte) ENHANCED) == ENHANCED);
return BgpLinkAttrProtectionType.of(bExtraTraffic, bUnprotected,
bShared, bDedOneIstoOne,
bDedOnePlusOne, bEnhanced);
}
/**
* Returns ExtraTraffic Bit.
*
* @return ExtraTraffic Bit
*/
public boolean extraTraffic() {
return bExtraTraffic;
}
/**
* Returns Unprotected Bit.
*
* @return Unprotected Bit
*/
public boolean unprotected() {
return bUnprotected;
}
/**
* Returns Shared Bit.
*
* @return Shared Bit
*/
public boolean shared() {
return bShared;
}
/**
* Returns DedOneIstoOne Bit.
*
* @return DedOneIstoOne Bit
*/
public boolean dedOneIstoOne() {
return bDedOneIstoOne;
}
/**
* Returns DedOnePlusOne Bit.
*
* @return DedOnePlusOne Bit
*/
public boolean dedOnePlusOne() {
return bDedOnePlusOne;
}
/**
* Returns Enhanced Bit.
*
* @return Enhanced Bit
*/
public boolean enhanced() {
return bEnhanced;
}
@Override
public short getType() {
return ATTRLINK_PROTECTIONTYPE;
}
@Override
public int hashCode() {
return Objects.hash(bExtraTraffic, bUnprotected, bShared,
bDedOneIstoOne, bDedOnePlusOne, bEnhanced);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof BgpLinkAttrProtectionType) {
BgpLinkAttrProtectionType other = (BgpLinkAttrProtectionType) obj;
return Objects.equals(bExtraTraffic, other.bExtraTraffic)
&& Objects.equals(bUnprotected, other.bUnprotected)
&& Objects.equals(bShared, other.bShared)
&& Objects.equals(bDedOneIstoOne, other.bDedOneIstoOne)
&& Objects.equals(bDedOnePlusOne, other.bDedOnePlusOne)
&& Objects.equals(bEnhanced, other.bEnhanced);
}
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("bExtraTraffic", bExtraTraffic)
.add("bUnprotected", bUnprotected).add("bShared", bShared)
.add("bDedOneIstoOne", bDedOneIstoOne)
.add("bDedOnePlusOne", bDedOnePlusOne)
.add("bEnhanced", bEnhanced).toString();
}
}
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