| /* |
| * 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; |
| |
| 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.attr.BgpAttrNodeFlagBitTlv; |
| import org.onosproject.bgpio.types.attr.BgpAttrNodeIsIsAreaId; |
| import org.onosproject.bgpio.types.attr.BgpAttrNodeMultiTopologyId; |
| import org.onosproject.bgpio.types.attr.BgpAttrNodeName; |
| import org.onosproject.bgpio.types.attr.BgpAttrOpaqueNode; |
| import org.onosproject.bgpio.types.attr.BgpAttrRouterIdV4; |
| import org.onosproject.bgpio.types.attr.BgpAttrRouterIdV6; |
| import org.onosproject.bgpio.types.attr.BgpLinkAttrIgpMetric; |
| import org.onosproject.bgpio.types.attr.BgpLinkAttrIsIsAdminstGrp; |
| import org.onosproject.bgpio.types.attr.BgpLinkAttrMplsProtocolMask; |
| import org.onosproject.bgpio.types.attr.BgpLinkAttrMaxLinkBandwidth; |
| import org.onosproject.bgpio.types.attr.BgpLinkAttrName; |
| import org.onosproject.bgpio.types.attr.BgpLinkAttrOpaqLnkAttrib; |
| import org.onosproject.bgpio.types.attr.BgpLinkAttrProtectionType; |
| import org.onosproject.bgpio.types.attr.BgpLinkAttrSrlg; |
| import org.onosproject.bgpio.types.attr.BgpLinkAttrTeDefaultMetric; |
| import org.onosproject.bgpio.types.attr.BgpLinkAttrUnRsrvdLinkBandwidth; |
| import org.onosproject.bgpio.types.attr.BgpPrefixAttrExtRouteTag; |
| import org.onosproject.bgpio.types.attr.BgpPrefixAttrIgpFlags; |
| import org.onosproject.bgpio.types.attr.BgpPrefixAttrMetric; |
| import org.onosproject.bgpio.types.attr.BgpPrefixAttrOspfFwdAddr; |
| import org.onosproject.bgpio.types.attr.BgpPrefixAttrOpaqueData; |
| import org.onosproject.bgpio.types.attr.BgpPrefixAttrRouteTag; |
| import org.onosproject.bgpio.util.Validation; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.base.MoreObjects; |
| |
| /** |
| * Implements BGP Link state attribute. |
| */ |
| public class LinkStateAttributes implements BgpValueType { |
| |
| protected static final Logger log = LoggerFactory |
| .getLogger(LinkStateAttributes.class); |
| |
| /* Node Attributes */ |
| public static final short ATTR_NODE_MT_TOPOLOGY_ID = 263; |
| public static final short ATTR_NODE_FLAG_BITS = 1024; |
| public static final short ATTR_NODE_OPAQUE_NODE = 1025; |
| public static final short ATTR_NODE_NAME = 1026; |
| public static final short ATTR_NODE_ISIS_AREA_ID = 1027; |
| public static final short ATTR_NODE_IPV4_LOCAL_ROUTER_ID = 1028; |
| public static final short ATTR_NODE_IPV6_LOCAL_ROUTER_ID = 1029; |
| |
| /* Link Attributes */ |
| public static final short ATTR_LINK_IPV4_REMOTE_ROUTER_ID = 1030; |
| public static final short ATTR_LINK_IPV6_REMOTE_ROUTER_ID = 1031; |
| public static final short ATTR_LINK_ADMINISTRATIVE_GRPS = 1088; |
| public static final short ATTR_LINK_MAX_BANDWIDTH = 1089; |
| public static final short ATTR_LINK_MAX_RES_BANDWIDTH = 1090; |
| public static final short ATTR_LINK_UNRES_BANDWIDTH = 1091; |
| public static final short ATTR_LINK_TE_DEFAULT_METRIC = 1092; |
| public static final short ATTR_LINK_PROTECTION_TYPE = 1093; |
| public static final short ATTR_LINK_MPLS_PROTOCOL_MASK = 1094; |
| public static final short ATTR_LINK_IGP_METRIC = 1095; |
| public static final short ATTR_LINK_SHR_RISK_GRP = 1096; |
| public static final short ATTR_LINK_OPAQUE_ATTR = 1097; |
| public static final short ATTR_LINK_NAME_ATTR = 1098; |
| |
| /* Prefix Attributes */ |
| public static final short ATTR_PREFIX_IGP_FLAG = 1152; |
| public static final short ATTR_PREFIX_ROUTE_TAG = 1153; |
| public static final short ATTR_PREFIX_EXTENDED_TAG = 1154; |
| public static final short ATTR_PREFIX_METRIC = 1155; |
| public static final short ATTR_PREFIX_OSPF_FWD_ADDR = 1156; |
| public static final short ATTR_PREFIX_OPAQUE_ATTR = 1157; |
| |
| public static final byte LINKSTATE_ATTRIB_TYPE = 50; |
| public static final byte TYPE_AND_LEN = 4; |
| private boolean isLinkStateAttribute = false; |
| private List<BgpValueType> linkStateAttribList; |
| |
| /** |
| * Constructor to reset parameters. |
| */ |
| LinkStateAttributes() { |
| this.linkStateAttribList = null; |
| } |
| |
| /** |
| * Constructor to initialize parameters. |
| * |
| * @param linkStateAttribList Linked list of Link, Node and Prefix TLVs |
| */ |
| LinkStateAttributes(List<BgpValueType> linkStateAttribList) { |
| this.linkStateAttribList = linkStateAttribList; |
| this.isLinkStateAttribute = true; |
| } |
| |
| /** |
| * Returns linked list of Link, Node and Prefix TLVs. |
| * |
| * @return linked list of Link, Node and Prefix TLVs |
| */ |
| public List<BgpValueType> linkStateAttributes() { |
| return this.linkStateAttribList; |
| } |
| |
| /** |
| * Returns if the Link state attributes are set or not. |
| * |
| * @return a boolean value to to check if the LS attributes are set or not |
| */ |
| public boolean isLinkStateAttributeSet() { |
| return this.isLinkStateAttribute; |
| } |
| |
| /** |
| * Reads the Link state attribute TLVs. |
| * |
| * @param cb ChannelBuffer |
| * @return constructor of LinkStateAttributes |
| * @throws BgpParseException while parsing link state attributes |
| */ |
| public static LinkStateAttributes read(ChannelBuffer cb) |
| throws BgpParseException { |
| |
| ChannelBuffer tempBuf = cb; |
| Validation parseFlags = Validation.parseAttributeHeader(cb); |
| int len = parseFlags.isShort() ? parseFlags.getLength() + TYPE_AND_LEN |
| : parseFlags.getLength() + 3; |
| |
| ChannelBuffer data = tempBuf.readBytes(len); |
| if (!parseFlags.getFirstBit() || parseFlags.getSecondBit() |
| || parseFlags.getThirdBit()) { |
| throw new BgpParseException(BgpErrorType.UPDATE_MESSAGE_ERROR, |
| BgpErrorType.ATTRIBUTE_FLAGS_ERROR, |
| data); |
| } |
| |
| if (cb.readableBytes() < parseFlags.getLength()) { |
| Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, |
| BgpErrorType.BAD_MESSAGE_LENGTH, |
| parseFlags.getLength()); |
| } |
| |
| BgpValueType bgpLSAttrib = null; |
| LinkedList<BgpValueType> linkStateAttribList; |
| linkStateAttribList = new LinkedList<BgpValueType>(); |
| ChannelBuffer tempCb = cb.readBytes(parseFlags.getLength()); |
| while (tempCb.readableBytes() > 0) { |
| short tlvCodePoint = tempCb.readShort(); |
| switch (tlvCodePoint) { |
| |
| /********* 7 NODE ATTRIBUTES ********/ |
| case ATTR_NODE_MT_TOPOLOGY_ID: /* 263 Multi-Topology Identifier*/ |
| bgpLSAttrib = BgpAttrNodeMultiTopologyId.read(tempCb); |
| break; |
| |
| case ATTR_NODE_FLAG_BITS: /*Node flag bit TLV*/ |
| bgpLSAttrib = BgpAttrNodeFlagBitTlv.read(tempCb); |
| break; |
| |
| case ATTR_NODE_OPAQUE_NODE: /*Opaque Node Attribute*/ |
| bgpLSAttrib = BgpAttrOpaqueNode.read(tempCb); |
| break; |
| |
| case ATTR_NODE_NAME: /*Node Name*/ |
| bgpLSAttrib = BgpAttrNodeName.read(tempCb); |
| break; |
| |
| case ATTR_NODE_ISIS_AREA_ID: /*IS-IS Area Identifier TLV*/ |
| bgpLSAttrib = BgpAttrNodeIsIsAreaId.read(tempCb); |
| break; |
| |
| case ATTR_NODE_IPV4_LOCAL_ROUTER_ID: /*IPv4 Router-ID of Local Node*/ |
| bgpLSAttrib = BgpAttrRouterIdV4.read(tempCb, (short) ATTR_NODE_IPV4_LOCAL_ROUTER_ID); |
| break; |
| |
| case ATTR_NODE_IPV6_LOCAL_ROUTER_ID: /*IPv6 Router-ID of Local Node*/ |
| bgpLSAttrib = BgpAttrRouterIdV6.read(tempCb, (short) ATTR_NODE_IPV6_LOCAL_ROUTER_ID); |
| break; |
| |
| /********* 15 LINK ATTRIBUTES ********/ |
| |
| case ATTR_LINK_IPV4_REMOTE_ROUTER_ID: /*IPv4 Router-ID of Remote Node*/ |
| bgpLSAttrib = BgpAttrRouterIdV4.read(tempCb, (short) 1030); |
| break; |
| |
| case ATTR_LINK_IPV6_REMOTE_ROUTER_ID: /*IPv6 Router-ID of Remote Node*/ |
| bgpLSAttrib = BgpAttrRouterIdV6.read(tempCb, (short) 1031); |
| break; |
| |
| case ATTR_LINK_ADMINISTRATIVE_GRPS: /*ISIS Administrative group STLV 3*/ |
| bgpLSAttrib = BgpLinkAttrIsIsAdminstGrp.read(tempCb); |
| break; |
| |
| case ATTR_LINK_MAX_BANDWIDTH: /*Maximum link bandwidth*/ |
| bgpLSAttrib = BgpLinkAttrMaxLinkBandwidth.read(tempCb, |
| (short) 1089); |
| break; |
| |
| case ATTR_LINK_MAX_RES_BANDWIDTH: /* Maximum Reservable link bandwidth */ |
| bgpLSAttrib = BgpLinkAttrMaxLinkBandwidth.read(tempCb, |
| (short) 1090); |
| break; |
| |
| case ATTR_LINK_UNRES_BANDWIDTH: /* UnReserved link bandwidth */ |
| bgpLSAttrib = BgpLinkAttrUnRsrvdLinkBandwidth |
| .read(tempCb, (short) 1091); |
| break; |
| |
| case ATTR_LINK_TE_DEFAULT_METRIC: /* TE Default Metric */ |
| bgpLSAttrib = BgpLinkAttrTeDefaultMetric.read(tempCb); |
| break; |
| |
| case ATTR_LINK_PROTECTION_TYPE:/* Link Protection type */ |
| bgpLSAttrib = BgpLinkAttrProtectionType.read(tempCb); |
| break; |
| |
| case ATTR_LINK_MPLS_PROTOCOL_MASK: /* MPLS Protocol Mask */ |
| bgpLSAttrib = BgpLinkAttrMplsProtocolMask.read(tempCb); // 2 |
| break; |
| |
| case ATTR_LINK_IGP_METRIC: /* IGP Metric */ |
| bgpLSAttrib = BgpLinkAttrIgpMetric.read(tempCb); // 2 |
| break; |
| |
| case ATTR_LINK_SHR_RISK_GRP: /* Shared Risk Link Group */ |
| bgpLSAttrib = BgpLinkAttrSrlg.read(tempCb); // 3 |
| break; |
| |
| case ATTR_LINK_OPAQUE_ATTR: /* Opaque link attribute */ |
| bgpLSAttrib = BgpLinkAttrOpaqLnkAttrib.read(tempCb); |
| break; |
| |
| case ATTR_LINK_NAME_ATTR: /* Link Name attribute */ |
| bgpLSAttrib = BgpLinkAttrName.read(tempCb); |
| break; |
| |
| /********* 6 PREFIX ATTRIBUTES ********/ |
| |
| case ATTR_PREFIX_IGP_FLAG: /* IGP Flags */ |
| bgpLSAttrib = BgpPrefixAttrIgpFlags.read(tempCb); |
| break; |
| |
| case ATTR_PREFIX_ROUTE_TAG: /* Route Tag */ |
| bgpLSAttrib = BgpPrefixAttrRouteTag.read(tempCb); |
| break; |
| |
| case ATTR_PREFIX_EXTENDED_TAG: /* Extended Tag */ |
| bgpLSAttrib = BgpPrefixAttrExtRouteTag.read(tempCb); |
| break; |
| |
| case ATTR_PREFIX_METRIC: /* Prefix Metric */ |
| bgpLSAttrib = BgpPrefixAttrMetric.read(tempCb); |
| break; |
| |
| case ATTR_PREFIX_OSPF_FWD_ADDR: /* OSPF Forwarding Address */ |
| bgpLSAttrib = BgpPrefixAttrOspfFwdAddr.read(tempCb); |
| break; |
| |
| case ATTR_PREFIX_OPAQUE_ATTR: /* Opaque Prefix Attribute */ |
| bgpLSAttrib = BgpPrefixAttrOpaqueData.read(tempCb); |
| break; |
| |
| default: |
| throw new BgpParseException( |
| "The Bgp-LS Attribute is not supported : " |
| + tlvCodePoint); |
| } |
| |
| linkStateAttribList.add(bgpLSAttrib); |
| } |
| return new LinkStateAttributes(linkStateAttribList); |
| } |
| |
| @Override |
| public short getType() { |
| return LINKSTATE_ATTRIB_TYPE; |
| } |
| |
| @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()).omitNullValues() |
| .add("linkStateAttribList", linkStateAttribList).toString(); |
| } |
| } |