diff options
Diffstat (limited to 'framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpPathAttributes.java')
-rw-r--r-- | framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpPathAttributes.java | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpPathAttributes.java b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpPathAttributes.java deleted file mode 100644 index 13e52ca2..00000000 --- a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpPathAttributes.java +++ /dev/null @@ -1,200 +0,0 @@ -/* - * 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.protocol.ver4; - -import java.util.LinkedList; -import java.util.List; - -import org.jboss.netty.buffer.ChannelBuffer; -import org.onosproject.bgpio.exceptions.BgpParseException; -import org.onosproject.bgpio.types.As4Path; -import org.onosproject.bgpio.types.AsPath; -import org.onosproject.bgpio.types.BgpErrorType; -import org.onosproject.bgpio.types.BgpValueType; -import org.onosproject.bgpio.types.LocalPref; -import org.onosproject.bgpio.types.Med; -import org.onosproject.bgpio.types.NextHop; -import org.onosproject.bgpio.types.Origin; -import org.onosproject.bgpio.types.MpReachNlri; -import org.onosproject.bgpio.types.MpUnReachNlri; -import org.onosproject.bgpio.util.UnSupportedAttribute; -import org.onosproject.bgpio.util.Validation; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -import com.google.common.base.MoreObjects; - -/** - * Provides Implementation of BGP Path Attribute. - */ -public class BgpPathAttributes { - - /* Path attribute: - <attribute type, attribute length, attribute value> - - 0 1 - 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | Attr. Flags |Attr. Type Code| - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - REFERENCE : RFC 4271 - */ - protected static final Logger log = LoggerFactory.getLogger(BgpPathAttributes.class); - - public static final int LINK_STATE_ATTRIBUTE_TYPE = 50; - public static final int MPREACHNLRI_TYPE = 14; - public static final int MPUNREACHNLRI_TYPE = 15; - - private final List<BgpValueType> pathAttribute; - - /** - * Initialize parameter. - */ - public BgpPathAttributes() { - this.pathAttribute = null; - } - - /** - * Constructor to initialize parameters for BGP path attributes. - * - * @param pathAttribute list of path attributes - */ - public BgpPathAttributes(List<BgpValueType> pathAttribute) { - this.pathAttribute = pathAttribute; - } - - /** - * Returns list of path attributes. - * - * @return list of path attributes - */ - public List<BgpValueType> pathAttributes() { - return this.pathAttribute; - } - - /** - * Reads from channelBuffer and parses BGP path attributes. - * - * @param cb channelBuffer - * @return object of BgpPathAttributes - * @throws BgpParseException while parsing BGP path attributes - */ - public static BgpPathAttributes read(ChannelBuffer cb) - throws BgpParseException { - - BgpValueType pathAttribute = null; - List<BgpValueType> pathAttributeList = new LinkedList<>(); - boolean isOrigin = false; - boolean isAsPath = false; - boolean isNextHop = false; - boolean isMpReach = false; - boolean isMpUnReach = false; - while (cb.readableBytes() > 0) { - cb.markReaderIndex(); - byte flags = cb.readByte(); - byte typeCode = cb.readByte(); - cb.resetReaderIndex(); - switch (typeCode) { - case Origin.ORIGIN_TYPE: - pathAttribute = Origin.read(cb); - isOrigin = ((Origin) pathAttribute).isOriginSet(); - break; - case AsPath.ASPATH_TYPE: - pathAttribute = AsPath.read(cb); - isAsPath = ((AsPath) pathAttribute).isaspathSet(); - break; - case As4Path.AS4PATH_TYPE: - pathAttribute = As4Path.read(cb); - break; - case NextHop.NEXTHOP_TYPE: - pathAttribute = NextHop.read(cb); - isNextHop = ((NextHop) pathAttribute).isNextHopSet(); - break; - case Med.MED_TYPE: - pathAttribute = Med.read(cb); - break; - case LocalPref.LOCAL_PREF_TYPE: - pathAttribute = LocalPref.read(cb); - break; - case MpReachNlri.MPREACHNLRI_TYPE: - pathAttribute = MpReachNlri.read(cb); - isMpReach = ((MpReachNlri) pathAttribute).isMpReachNlriSet(); - break; - case MpUnReachNlri.MPUNREACHNLRI_TYPE: - pathAttribute = MpUnReachNlri.read(cb); - isMpUnReach = ((MpUnReachNlri) pathAttribute) - .isMpUnReachNlriSet(); - break; - case LINK_STATE_ATTRIBUTE_TYPE: - //TODO: To be merged later - break; - default: - //skip bytes for unsupported attribute types - UnSupportedAttribute.read(cb); - } - pathAttributeList.add(pathAttribute); - } - - checkMandatoryAttr(isOrigin, isAsPath, isNextHop, isMpReach, isMpUnReach); - //TODO:if mp_reach or mp_unreach not present ignore the packet - return new BgpPathAttributes(pathAttributeList); - } - - /** - * Checks mandatory attributes are presents, if not present throws exception. - * - * @param isOrigin say whether origin attribute is present - * @param isAsPath say whether aspath attribute is present - * @param isNextHop say whether nexthop attribute is present - * @param isMpReach say whether mpreach attribute is present - * @param isMpUnReach say whether mpunreach attribute is present - * @throws BgpParseException if mandatory path attribute is not present - */ - public static void checkMandatoryAttr(boolean isOrigin, boolean isAsPath, - boolean isNextHop, boolean isMpReach, boolean isMpUnReach) - throws BgpParseException { - // Mandatory attributes validation not required for MP_UNREACH - if (isMpUnReach) { - return; - } - - if (!isOrigin) { - log.debug("Mandatory Attributes not Present"); - Validation.validateType(BgpErrorType.UPDATE_MESSAGE_ERROR, - BgpErrorType.MISSING_WELLKNOWN_ATTRIBUTE, - Origin.ORIGIN_TYPE); - } - if (!isAsPath) { - log.debug("Mandatory Attributes not Present"); - Validation.validateType(BgpErrorType.UPDATE_MESSAGE_ERROR, - BgpErrorType.MISSING_WELLKNOWN_ATTRIBUTE, - AsPath.ASPATH_TYPE); - } - if (!isMpUnReach && !isMpReach && !isNextHop) { - log.debug("Mandatory Attributes not Present"); - Validation.validateType(BgpErrorType.UPDATE_MESSAGE_ERROR, - BgpErrorType.MISSING_WELLKNOWN_ATTRIBUTE, - NextHop.NEXTHOP_TYPE); - } - } - - @Override - public String toString() { - return MoreObjects.toStringHelper(getClass()) - .add("pathAttribute", pathAttribute) - .toString(); - } -} |