| /* |
| * 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.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 MPLS protocol mask attribute. |
| */ |
| public class BgpLinkAttrMplsProtocolMask implements BgpValueType { |
| |
| protected static final Logger log = LoggerFactory |
| .getLogger(BgpLinkAttrMplsProtocolMask.class); |
| |
| public static final int ATTRLINK_MPLSPROTOMASK = 1094; |
| public static final int MASK_BYTE_LEN = 1; |
| |
| private final boolean bLdp; |
| private final boolean bRsvpTe; |
| |
| public static final byte FIRST_BIT = (byte) 0x80; |
| public static final byte SECOND_BIT = 0x40; |
| |
| /** |
| * Constructor to initialize the values. |
| * |
| * @param bLdp boolean value true if LDP flag is available |
| * @param bRsvpTe boolean value true if RSVP TE information is available |
| */ |
| public BgpLinkAttrMplsProtocolMask(boolean bLdp, boolean bRsvpTe) { |
| this.bLdp = bLdp; |
| this.bRsvpTe = bRsvpTe; |
| } |
| |
| /** |
| * Returns object of this class with specified values. |
| * |
| * @param bLdp boolean value true if LDP flag is available |
| * @param bRsvpTe boolean value true if RSVP TE information is available |
| * @return object of BgpLinkAttrMplsProtocolMask |
| */ |
| public static BgpLinkAttrMplsProtocolMask of(final boolean bLdp, |
| final boolean bRsvpTe) { |
| return new BgpLinkAttrMplsProtocolMask(bLdp, bRsvpTe); |
| } |
| |
| /** |
| * Reads the BGP link attributes MPLS protocol mask. |
| * |
| * @param cb Channel buffer |
| * @return object of type BgpLinkAttrMPLSProtocolMask |
| * @throws BgpParseException while parsing BgpLinkAttrMplsProtocolMask |
| */ |
| public static BgpLinkAttrMplsProtocolMask read(ChannelBuffer cb) |
| throws BgpParseException { |
| boolean bLdp = false; |
| boolean bRsvpTe = false; |
| |
| short lsAttrLength = cb.readShort(); |
| |
| if ((lsAttrLength != MASK_BYTE_LEN) |
| || (cb.readableBytes() < lsAttrLength)) { |
| Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, |
| BgpErrorType.ATTRIBUTE_LENGTH_ERROR, |
| lsAttrLength); |
| } |
| |
| byte flags = cb.readByte(); |
| |
| bLdp = ((flags & (byte) FIRST_BIT) == FIRST_BIT); |
| bRsvpTe = ((flags & (byte) SECOND_BIT) == SECOND_BIT); |
| |
| return BgpLinkAttrMplsProtocolMask.of(bLdp, bRsvpTe); |
| } |
| |
| /** |
| * Returns true if LDP bit is set. |
| * |
| * @return True if LDP information is set else false. |
| */ |
| public boolean ldpBit() { |
| return bLdp; |
| } |
| |
| /** |
| * Returns RSVP TE information. |
| * |
| * @return True if RSVP TE information is set else false. |
| */ |
| public boolean rsvpBit() { |
| return bRsvpTe; |
| } |
| |
| @Override |
| public short getType() { |
| return ATTRLINK_MPLSPROTOMASK; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(bLdp, bRsvpTe); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| |
| if (obj instanceof BgpLinkAttrMplsProtocolMask) { |
| BgpLinkAttrMplsProtocolMask other = (BgpLinkAttrMplsProtocolMask) obj; |
| return Objects.equals(bLdp, other.bLdp) |
| && Objects.equals(bRsvpTe, other.bRsvpTe); |
| } |
| 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("bLdp", bLdp).add("bRsvpTe", bRsvpTe).toString(); |
| } |
| |
| @Override |
| public int compareTo(Object o) { |
| // TODO Auto-generated method stub |
| return 0; |
| } |
| } |