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Diffstat (limited to 'framework/src/onos/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/LinkStateAttributes.java')
| -rw-r--r-- | framework/src/onos/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/LinkStateAttributes.java | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/framework/src/onos/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/LinkStateAttributes.java b/framework/src/onos/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/LinkStateAttributes.java new file mode 100644 index 00000000..cdf6ebeb --- /dev/null +++ b/framework/src/onos/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/LinkStateAttributes.java @@ -0,0 +1,314 @@ +/* + * 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(); + } + + @Override + public int compareTo(Object o) { + // TODO Auto-generated method stub + return 0; + } +} |