diff options
Diffstat (limited to 'framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpAttrNodeFlagBitTlv.java')
| -rwxr-xr-x | framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpAttrNodeFlagBitTlv.java | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpAttrNodeFlagBitTlv.java b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpAttrNodeFlagBitTlv.java new file mode 100755 index 00000000..e0fef7c8 --- /dev/null +++ b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpAttrNodeFlagBitTlv.java @@ -0,0 +1,199 @@ +/* + * 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 node flag. + */ +public final class BgpAttrNodeFlagBitTlv implements BgpValueType { + + protected static final Logger log = LoggerFactory + .getLogger(BgpAttrNodeFlagBitTlv.class); + + public static final int ATTRNODE_FLAGBIT = 1024; + + /* Node flag bit TLV */ + private final boolean bOverloadBit; + private final boolean bAttachedBit; + private final boolean bExternalBit; + private final boolean bAbrBit; + + public static final byte FIRST_BIT = (byte) 0x80; + public static final byte SECOND_BIT = 0x40; + public static final byte THIRD_BIT = 0x20; + public static final byte FOURTH_BIT = 0x01; + + /** + * Constructor to initialize parameters. + * + * @param bOverloadBit Overload bit + * @param bAttachedBit Attached bit + * @param bExternalBit External bit + * @param bAbrBit ABR Bit + */ + private BgpAttrNodeFlagBitTlv(boolean bOverloadBit, boolean bAttachedBit, + boolean bExternalBit, boolean bAbrBit) { + this.bOverloadBit = bOverloadBit; + this.bAttachedBit = bAttachedBit; + this.bExternalBit = bExternalBit; + this.bAbrBit = bAbrBit; + } + + /** + * Returns object of this class with specified values. + * + * @param bOverloadBit Overload bit + * @param bAttachedBit Attached bit + * @param bExternalBit External bit + * @param bAbrBit ABR Bit + * @return object of BgpAttrNodeFlagBitTlv + */ + public static BgpAttrNodeFlagBitTlv of(final boolean bOverloadBit, + final boolean bAttachedBit, + final boolean bExternalBit, + final boolean bAbrBit) { + return new BgpAttrNodeFlagBitTlv(bOverloadBit, bAttachedBit, + bExternalBit, bAbrBit); + } + + /** + * Reads the Node Flag Bits. + * + * @param cb ChannelBuffer + * @return attribute node flag bit tlv + * @throws BgpParseException while parsing BgpAttrNodeFlagBitTlv + */ + public static BgpAttrNodeFlagBitTlv read(ChannelBuffer cb) + throws BgpParseException { + boolean bOverloadBit = false; + boolean bAttachedBit = false; + boolean bExternalBit = false; + boolean bAbrBit = false; + + short lsAttrLength = cb.readShort(); + + if ((lsAttrLength != 1) || (cb.readableBytes() < lsAttrLength)) { + Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, + BgpErrorType.ATTRIBUTE_LENGTH_ERROR, + lsAttrLength); + } + + byte nodeFlagBits = cb.readByte(); + + bOverloadBit = ((nodeFlagBits & FIRST_BIT) == FIRST_BIT); + bAttachedBit = ((nodeFlagBits & SECOND_BIT) == SECOND_BIT); + bExternalBit = ((nodeFlagBits & THIRD_BIT) == THIRD_BIT); + bAbrBit = ((nodeFlagBits & FOURTH_BIT) == FOURTH_BIT); + + return BgpAttrNodeFlagBitTlv.of(bOverloadBit, bAttachedBit, + bExternalBit, bAbrBit); + } + + /** + * Returns Overload Bit. + * + * @return Overload Bit + */ + public boolean overLoadBit() { + return bOverloadBit; + } + + /** + * Returns Attached Bit. + * + * @return Attached Bit + */ + public boolean attachedBit() { + return bAttachedBit; + } + + /** + * Returns External Bit. + * + * @return External Bit + */ + public boolean externalBit() { + return bExternalBit; + } + + /** + * Returns ABR Bit. + * + * @return ABR Bit + */ + public boolean abrBit() { + return bAbrBit; + } + + @Override + public short getType() { + return ATTRNODE_FLAGBIT; + } + + @Override + public int write(ChannelBuffer cb) { + // TODO This will be implemented in the next version + return 0; + } + + @Override + public int hashCode() { + return Objects.hash(bOverloadBit, bAttachedBit, bExternalBit, bAbrBit); + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + + if (obj instanceof BgpAttrNodeFlagBitTlv) { + BgpAttrNodeFlagBitTlv other = (BgpAttrNodeFlagBitTlv) obj; + return Objects.equals(bOverloadBit, other.bOverloadBit) + && Objects.equals(bAttachedBit, other.bAttachedBit) + && Objects.equals(bExternalBit, other.bExternalBit) + && Objects.equals(bAbrBit, other.bAbrBit); + } + return false; + } + + @Override + public String toString() { + return MoreObjects.toStringHelper(getClass()) + .add("bOverloadBit", bOverloadBit) + .add("bAttachedBit", bAttachedBit) + .add("bExternalBit", bExternalBit).add("bAbrBit", bAbrBit) + .toString(); + } + + @Override + public int compareTo(Object o) { + // TODO Auto-generated method stub + return 0; + } +} |