openstack/net-virt-sfc/impl/src/main/java/org/opendaylight/ovsdb/openstack/netvirt/sfc/workaround/NetvirtSfcWorkaroundOF13Provider.java

   1 /*
   2  * Copyright © 2015 Red Hat, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.ovsdb.openstack.netvirt.sfc.workaround;
  10
  11 import com.google.common.base.Preconditions;
  12 import java.util.List;
  13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  15 import org.opendaylight.ovsdb.openstack.netvirt.api.Constants;
  16 import org.opendaylight.ovsdb.openstack.netvirt.api.NodeCacheManager;
  17 import org.opendaylight.ovsdb.openstack.netvirt.api.OvsdbTables;
  18 import org.opendaylight.ovsdb.openstack.netvirt.api.Southbound;
  19 import org.opendaylight.ovsdb.openstack.netvirt.sfc.INetvirtSfcOF13Provider;
  20 import org.opendaylight.ovsdb.openstack.netvirt.sfc.ISfcClassifierService;
  21 import org.opendaylight.ovsdb.openstack.netvirt.sfc.NshUtils;
  22 import org.opendaylight.ovsdb.openstack.netvirt.sfc.SfcUtils;
  23 import org.opendaylight.ovsdb.utils.mdsal.utils.MdsalUtils;
  24 import org.opendaylight.ovsdb.utils.servicehelper.ServiceHelper;
  25 import org.opendaylight.sfc.provider.api.SfcProviderRenderedPathAPI;
  26 import org.opendaylight.sfc.provider.api.SfcProviderServiceForwarderAPI;
  27 import org.opendaylight.sfc.provider.api.SfcProviderServiceFunctionAPI;
  28 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.sl.rev140701.data.plane.locator.locator.type.Ip;
  29 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.CreateRenderedPathInput;
  30 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.CreateRenderedPathInputBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.rendered.service.path.first.hop.info.RenderedServicePathFirstHop;
  32 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.rendered.service.paths.RenderedServicePath;
  33 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.rendered.service.paths.rendered.service.path.RenderedServicePathHop;
  34 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.sf.rev140701.service.functions.ServiceFunction;
  35 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.sff.rev140701.service.function.forwarders.ServiceFunctionForwarder;
  36 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.sfp.rev140701.service.function.paths.ServiceFunctionPath;
  37 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev150317.access.lists.Acl;
  38 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev150317.access.lists.acl.access.list.entries.Ace;
  39 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev150317.access.lists.acl.access.list.entries.ace.Matches;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.sfc.acl.rev150105.RedirectToSfc;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.sfc.classifier.rev150105.Classifiers;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.sfc.classifier.rev150105.classifiers.Classifier;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.sfc.classifier.rev150105.classifiers.classifier.Bridges;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.sfc.classifier.rev150105.classifiers.classifier.bridges.Bridge;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.sfc.classifier.rev150105.classifiers.classifier.sffs.Sff;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeAugmentation;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbNodeAugmentation;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbTerminationPointAugmentation;
  49 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  50 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPoint;
  51 import org.osgi.framework.ServiceReference;
  52 import org.slf4j.Logger;
  53 import org.slf4j.LoggerFactory;
  54
  55 public class NetvirtSfcWorkaroundOF13Provider implements INetvirtSfcOF13Provider {
  56     private static final Logger LOG = LoggerFactory.getLogger(NetvirtSfcWorkaroundOF13Provider.class);
  57     private volatile NodeCacheManager nodeCacheManager;
  58     private volatile Southbound southbound;
  59     private volatile ISfcClassifierService sfcClassifierService;
  60     private static final short SFC_TABLE = 150;
  61     private MdsalUtils mdsalUtils;
  62     private SfcUtils sfcUtils;
  63     private DataBroker dataBroker;
  64     private static final String VXGPE = "vxgpe";
  65     public static final String TUNNEL_ENDPOINT_KEY = "local_ip";
  66
  67     public NetvirtSfcWorkaroundOF13Provider(final DataBroker dataBroker, MdsalUtils mdsalUtils, SfcUtils sfcUtils) {
  68         Preconditions.checkNotNull(dataBroker, "Input dataBroker cannot be NULL!");
  69         Preconditions.checkNotNull(mdsalUtils, "Input mdsalUtils cannot be NULL!");
  70         Preconditions.checkNotNull(sfcUtils, "Input sfcUtils cannot be NULL!");
  71
  72         this.dataBroker = dataBroker;
  73         this.mdsalUtils = mdsalUtils;
  74         this.sfcUtils = sfcUtils;
  75     }
  76
  77     public void setSfcClassifierService(ISfcClassifierService sfcClassifierService) {
  78         this.sfcClassifierService = sfcClassifierService;
  79     }
  80
  81     @Override
  82     public void addClassifierRules(Bridge bridge, Acl acl) {
  83
  84     }
  85
  86     @Override
  87     public void addClassifierRules(Bridges bridges, Acl acl) {
  88         Preconditions.checkNotNull(bridges, "Input bridges cannot be NULL!");
  89         Preconditions.checkNotNull(acl, "Input acl cannot be NULL!");
  90     }
  91
  92     @Override
  93     public void removeClassifierRules(Sff sff, Acl acl) {
  94
  95     }
  96
  97     @Override
  98     public void addClassifierRules(Acl acl) {
  99         for (Ace ace : acl.getAccessListEntries().getAce()) {
 100             processAclEntry(ace);
 101         }
 102     }
 103
 104     @Override
 105     public void removeClassifierRules(Acl acl) {
 106         for (Ace ace : acl.getAccessListEntries().getAce()) {
 107             RenderedServicePath rsp = getRenderedServicePath(ace);
 108             if (rsp == null) {
 109                 LOG.warn("Failed to get renderedServicePatch for entry: {}", ace);
 110                 return;
 111             }
 112             sfcClassifierService.clearFlows(dataBroker, rsp.getName().getValue());
 113         }
 114     }
 115
 116     @Override
 117     public void removeRsp(RenderedServicePath change) {
 118         sfcClassifierService.clearFlows(dataBroker, change.getName().getValue());
 119     }
 120
 121     @Override
 122     public void addRsp(RenderedServicePath change) {
 123         handleRenderedServicePath(change);
 124     }
 125
 126     @Override
 127     public void updateRsp(RenderedServicePath change) {
 128         LOG.info("updateRsp not implemented yet");
 129     }
 130
 131     private void processAclEntry(Ace entry) {
 132         Matches matches = entry.getMatches();
 133         Preconditions.checkNotNull(matches, "ACL Entry cannot be null!");
 134
 135         RenderedServicePath rsp = getRenderedServicePath(entry);
 136         if (rsp == null) {
 137             LOG.warn("Failed to get renderedServicePatch for entry: {}", entry);
 138             return;
 139         }
 140
 141         handleRenderedServicePath(rsp, entry);
 142     }
 143
 144     private void handleRenderedServicePath(RenderedServicePath rsp) {
 145         LOG.info("handleRenderedServicePath: RSP: {}", rsp);
 146         Ace entry = getAceFromRenderedServicePath(rsp);
 147         if (entry == null) {
 148             LOG.warn("handleRenderedServicePath: failed to get acl entry");
 149             return;
 150         }
 151
 152         handleRenderedServicePath(rsp, entry);
 153     }
 154
 155     private void handleRenderedServicePath(RenderedServicePath rsp, Ace entry) {
 156         LOG.info("handleRenderedServicePath: RSP: {}, Ace: {}", rsp, entry);
 157
 158         Matches matches = entry.getMatches();
 159         if (matches == null) {
 160             LOG.warn("processAclEntry: matches not found");
 161             return;
 162         }
 163
 164         List<RenderedServicePathHop> pathHopList = rsp.getRenderedServicePathHop();
 165         if (pathHopList.isEmpty()) {
 166             LOG.warn("handleRenderedServicePath: RSP {} has empty hops!!", rsp.getName());
 167             return;
 168         }
 169         LOG.info("handleRenderedServicePath: pathHopList: {}", pathHopList);
 170
 171         RenderedServicePathFirstHop firstRspHop = SfcProviderRenderedPathAPI
 172                 .readRenderedServicePathFirstHop(rsp.getName());
 173         LOG.info("handleRenderedServicePath: firstRspHop: {}", firstRspHop);
 174
 175         RenderedServicePathHop firstHop = pathHopList.get(0);
 176         RenderedServicePathHop lastHop = pathHopList.get(pathHopList.size()-1);
 177
 178         final List<Node> bridgeNodes = nodeCacheManager.getBridgeNodes();
 179         if (bridgeNodes == null || bridgeNodes.isEmpty()) {
 180             LOG.warn("handleRenderedServicePath: There are no bridges to process");
 181             return;
 182         }
 183         for (RenderedServicePathHop hop : pathHopList) {
 184             for (Node bridgeNode : bridgeNodes) {
 185                 // ignore bridges other than br-int
 186                 // TODO: Get bridge name from DPL, rework this loop to use DPL list
 187                 OvsdbBridgeAugmentation ovsdbBridgeAugmentation = southbound.getBridge(bridgeNode, "br-int");
 188                 if (ovsdbBridgeAugmentation == null) {
 189                     continue;
 190                 }
 191                 // TODO: Get port name from the DPL
 192                 long vxGpeOfPort = getOFPort(bridgeNode, VXGPE);
 193                 if (vxGpeOfPort == 0L) {
 194                     LOG.warn("handleRenderedServicePath: Could not identify gpe vtep {} -> OF ({}) on {}",
 195                             VXGPE, vxGpeOfPort, bridgeNode);
 196                     continue;
 197                 }
 198                 long dataPathId = southbound.getDataPathId(bridgeNode);
 199                 if (dataPathId == 0L) {
 200                     LOG.warn("handleRenderedServicePath: Could not identify datapathId on {}", bridgeNode);
 201                     continue;
 202                 }
 203
 204                 ServiceFunction serviceFunction =
 205                         SfcProviderServiceFunctionAPI.readServiceFunction(firstHop.getServiceFunctionName());
 206                 if (serviceFunction == null) {
 207                     LOG.warn("handleRenderedServicePath: Could not identify ServiceFunction {} on {}",
 208                             firstHop.getServiceFunctionName().getValue(), bridgeNode);
 209                     continue;
 210                 }
 211                 ServiceFunctionForwarder serviceFunctionForwarder =
 212                         SfcProviderServiceForwarderAPI
 213                                 .readServiceFunctionForwarder(hop.getServiceFunctionForwarder());
 214                 if (serviceFunctionForwarder == null) {
 215                     LOG.warn("handleRenderedServicePath: Could not identify ServiceFunctionForwarder {} on {}",
 216                             firstHop.getServiceFunctionName().getValue(), bridgeNode);
 217                     continue;
 218                 }
 219
 220                 handleSf(bridgeNode, serviceFunction, rsp);
 221                 handleSff(bridgeNode, serviceFunctionForwarder, serviceFunction, hop, firstHop, lastHop,
 222                         entry.getRuleName(), matches, vxGpeOfPort, rsp);
 223                 if (firstHop == lastHop) {
 224                     handleSff(bridgeNode, serviceFunctionForwarder, serviceFunction, hop, null, lastHop,
 225                             entry.getRuleName(), matches, vxGpeOfPort, rsp);
 226                 }
 227             }
 228         }
 229     }
 230
 231     private void handleSff(Node bridgeNode, ServiceFunctionForwarder serviceFunctionForwarder,
 232                            ServiceFunction serviceFunction,
 233                            RenderedServicePathHop hop,
 234                            RenderedServicePathHop firstHop,
 235                            RenderedServicePathHop lastHop,
 236                            String ruleName, Matches matches,
 237                            long vxGpeOfPort, RenderedServicePath rsp) {
 238         long dataPathId = southbound.getDataPathId(bridgeNode);
 239
 240         if (hop == firstHop) {
 241             LOG.info("handleSff: first hop processing {} - {}",
 242                     bridgeNode.getNodeId().getValue(), serviceFunctionForwarder.getName().getValue());
 243             NshUtils nshHeader = new NshUtils();
 244             nshHeader.setNshNsp(rsp.getPathId());
 245             nshHeader.setNshNsi(firstHop.getServiceIndex());
 246             Ip sffIp = sfcUtils.getSffIp(lastHop.getServiceFunctionForwarder());
 247             nshHeader.setNshMetaC1(NshUtils.convertIpAddressToLong(sffIp.getIp().getIpv4Address()));
 248             if (isSffOnBridge(bridgeNode, serviceFunctionForwarder)) {
 249                 LOG.info("handleSff: sff and bridge are the same: {} - {}, skipping first sff",
 250                         bridgeNode.getNodeId().getValue(), serviceFunctionForwarder.getName().getValue());
 251                 Ip ip = sfcUtils.getSfIp(serviceFunction);
 252                 nshHeader.setNshTunIpDst(ip.getIp().getIpv4Address());
 253                 nshHeader.setNshTunUdpPort(ip.getPort());
 254             } else {
 255                 LOG.info("handleSff: sff and bridge are not the same: {} - {}, sending to first sff",
 256                         bridgeNode.getNodeId().getValue(), serviceFunctionForwarder.getName().getValue());
 257                 Ip ip = sfcUtils.getSffIp(serviceFunctionForwarder);
 258                 nshHeader.setNshTunIpDst(ip.getIp().getIpv4Address());
 259                 nshHeader.setNshTunUdpPort(ip.getPort());
 260             }
 261             sfcClassifierService.programIngressClassifier(dataPathId, ruleName, matches,
 262                     rsp.getPathId(), rsp.getStartingIndex(),
 263                     nshHeader, vxGpeOfPort, rsp.getName().getValue(), true);
 264         } else if (hop == lastHop) {
 265             LOG.info("handleSff: last hop processing {} - {}",
 266                     bridgeNode.getNodeId().getValue(), serviceFunctionForwarder.getName().getValue());
 267             short lastServiceindex = (short)((lastHop.getServiceIndex()).intValue() - 1);
 268             String sfDplName = sfcUtils.getSfDplName(serviceFunction);
 269             long sfOfPort = getSfPort(bridgeNode, sfDplName);
 270             // TODO: Coexistence: SFC flows should take this using new egressTable REST
 271             sfcClassifierService.programEgressClassifier(dataPathId, vxGpeOfPort, rsp.getPathId(),
 272                     lastServiceindex, sfOfPort, 0, rsp.getName().getValue(), true);
 273             // TODO: Coexistence: This flow should like like one above, change port, add reg0=1, resubmit
 274             sfcClassifierService.programEgressClassifierBypass(dataPathId, vxGpeOfPort, rsp.getPathId(),
 275                     lastServiceindex, sfOfPort, 0, rsp.getName().getValue(), true);
 276         } else {
 277             // add typical sff flows
 278         }
 279
 280         // TODO: Coexistence: SFC flows should take this using new tableOffset REST
 281         //sfcClassifierService.programSfcTable(dataPathId, vxGpeOfPort, SFC_TABLE, true);
 282     }
 283
 284     void handleSf(Node bridgeNode, ServiceFunction serviceFunction, RenderedServicePath rsp) {
 285         if (isSfOnBridge(bridgeNode, serviceFunction)) {
 286             LOG.info("handleSf: sf and bridge are on the same node: {} - {}, adding workaround and arp",
 287                     bridgeNode.getNodeId().getValue(), serviceFunction.getName().getValue());
 288             long dataPathId = southbound.getDataPathId(bridgeNode);
 289             Ip ip = sfcUtils.getSfIp(serviceFunction);
 290             String sfIpAddr = String.valueOf(ip.getIp().getValue());
 291             int sfIpPort = ip.getPort().getValue(); //GPE_PORT
 292             String sfDplName = sfcUtils.getSfDplName(serviceFunction);
 293             long sfOfPort = getSfPort(bridgeNode, sfDplName);
 294             String sfMac = getMacFromExternalIds(bridgeNode, sfDplName);
 295             if (sfMac == null) {
 296                 LOG.warn("handleSff: could not find mac for {} on {}", sfDplName, bridgeNode);
 297                 return;
 298             }
 299             //should be sffdplport, but they should all be the same 6633/4790
 300             // TODO: Coexistence: SFC flows should take this using new sf dpl augmentation
 301             //sfcClassifierService.program_sfEgress(dataPathId, sfIpPort, true);
 302             //sfcClassifierService.program_sfIngress(dataPathId, sfIpPort, sfOfPort, sfIpAddr, sfDplName, true);
 303             sfcClassifierService.programStaticArpEntry(dataPathId, 0L, sfMac, sfIpAddr,
 304                     rsp.getName().getValue(), true);
 305         } else {
 306             LOG.info("handleSf: sf and bridge are not on the same node: {} - {}, do nothing",
 307                     bridgeNode.getNodeId().getValue(), serviceFunction.getName().getValue());
 308         }
 309     }
 310
 311     private boolean isSffOnBridge(Node bridgeNode, ServiceFunctionForwarder serviceFunctionForwarder) {
 312         String localIp = "";
 313         Ip ip = sfcUtils.getSffIp(serviceFunctionForwarder);
 314         Node ovsdbNode = southbound.readOvsdbNode(bridgeNode);
 315         if (ovsdbNode != null) {
 316             localIp = getLocalip(ovsdbNode);
 317         }
 318         LOG.info("isSffOnBridge: {}: {}, localIp: {}, sff ip: {}",
 319                 bridgeNode.getNodeId().getValue(),
 320                 localIp.equals(String.valueOf(ip.getIp().getValue())),
 321                 localIp, ip.getIp().getValue());
 322         return localIp.equals(String.valueOf(ip.getIp().getValue()));
 323     }
 324
 325     private String getLocalip(Node ovsdbNode) {
 326         Preconditions.checkNotNull(ovsdbNode, "The ovsdbNode was null");
 327         String localIp = null;
 328         if (ovsdbNode != null) {
 329             OvsdbNodeAugmentation ovsdbNodeAugmentation = ovsdbNode.getAugmentation(OvsdbNodeAugmentation.class);
 330             if (ovsdbNodeAugmentation != null && ovsdbNodeAugmentation.getOpenvswitchOtherConfigs() != null) {
 331                 localIp = southbound.getOtherConfig(ovsdbNode, OvsdbTables.OPENVSWITCH, TUNNEL_ENDPOINT_KEY);
 332             }
 333         }
 334         if (localIp == null) {
 335             LOG.warn("local_ip was not found for node: {}", ovsdbNode);
 336             localIp = "";
 337         }
 338         return localIp;
 339     }
 340
 341     private boolean isSfOnBridge(Node bridgeNode, ServiceFunction serviceFunction) {
 342         String sfDplName = sfcUtils.getSfDplName(serviceFunction);
 343         long sfOfPort = getSfPort(bridgeNode, sfDplName);
 344         LOG.info("isSfOnBridge: {}: {}, sfOfPort: {}", bridgeNode.getNodeId().getValue(), sfOfPort != 0L, sfOfPort);
 345         return sfOfPort != 0L;
 346     }
 347
 348     private Ace getAceFromRenderedServicePath(RenderedServicePath rsp) {
 349         Preconditions.checkNotNull(rsp, "RSP cannot be null");
 350         Ace ace;
 351         //String rspName = rsp.getName().getValue();
 352         //String rspNameSuffix = "_rsp";
 353         //String sfcName = rspName.substring(0, rspName.length() - rspNameSuffix.length());
 354         //String sfcName = rsp.getServiceChainName().getValue()
 355         //LOG.info("getAceFromRenderedServicePath: rsp: {}, sfcName: {}", rsp, sfcName);
 356         ace = sfcUtils.getAce(rsp);
 357
 358         return ace;
 359     }
 360
 361     private RenderedServicePath getRenderedServicePath (Ace entry) {
 362         RenderedServicePath rsp = null;
 363         RedirectToSfc sfcRedirect = entry.getActions().getAugmentation(RedirectToSfc.class);
 364         LOG.debug("getRenderedServicePath: Processing ACL entry = {} sfcRedirect = {}",
 365                 entry.getRuleName(), sfcRedirect);
 366         if (sfcRedirect == null) {
 367             LOG.warn("getRenderedServicePath: sfcRedirect is null");
 368             return null;
 369         }
 370
 371         if (sfcRedirect.getRspName() != null) {
 372             rsp = getRenderedServicePathFromRsp(sfcRedirect.getRspName());
 373         } else if (sfcRedirect.getSfpName() != null) {
 374             LOG.warn("getRenderedServicePath: by sfp not handled yet");
 375         } else {
 376             rsp = getRenderedServicePathFromSfc(entry);
 377         }
 378         LOG.info("getRenderedServicePath: rsp: {}", rsp);
 379         return rsp;
 380     }
 381
 382     private RenderedServicePath getRenderedServicePathFromRsp(String rspName) {
 383         return sfcUtils.getRsp(rspName);
 384     }
 385
 386     private RenderedServicePath getRenderedServicePathFromSfc (Ace entry) {
 387         RedirectToSfc sfcRedirect = entry.getActions().getAugmentation(RedirectToSfc.class);
 388         LOG.debug("getRenderedServicePathFromSfc: Processing ACL entry = {} sfcRedirect = {}",
 389                 entry.getRuleName(), sfcRedirect);
 390         if (sfcRedirect == null) {
 391             LOG.warn("getRenderedServicePathFromSfc: sfcRedirect is null");
 392             return null;
 393         }
 394
 395         String sfcName = sfcRedirect.getSfcName();
 396         ServiceFunctionPath sfp = sfcUtils.getSfp(sfcName);
 397         if (sfp == null || sfp.getName() == null) {
 398             LOG.warn("There is no configured SFP with sfcName = {}; so skip installing the ACL entry!!", sfcName);
 399             return null;
 400         }
 401
 402         LOG.debug("getRenderedServicePathFromSfc: Processing Redirect to SFC = {}, SFP = {}", sfcName, sfp);
 403         // If RSP doesn't exist, create an RSP.
 404         String sfpName = sfp.getName().getValue();
 405         RenderedServicePath rsp = sfcUtils.getRspforSfp(sfpName);
 406         String rspName = sfp.getName().getValue() + "_rsp";
 407         if (rsp == null) {
 408             if (!sfcRedirect.isRenderRsp()) {
 409                 LOG.info("getRenderedServicePathFromSfc: will not create RSP");
 410                 return null;
 411             }
 412             LOG.info("getRenderedServicePathFromSfc: No configured RSP corresponding to SFP = {}, "
 413                     + "Creating new RSP = {}", sfpName, rspName);
 414             CreateRenderedPathInput rspInput = new CreateRenderedPathInputBuilder()
 415                     .setParentServiceFunctionPath(sfpName)
 416                     .setName(rspName)
 417                     .setSymmetric(sfp.isSymmetric())
 418                     .build();
 419             rsp = SfcProviderRenderedPathAPI.createRenderedServicePathAndState(sfp, rspInput);
 420             if (rsp == null) {
 421                 LOG.warn("getRenderedServicePathFromSfc: failed to add RSP");
 422                 return null;
 423             }
 424
 425             // If SFP is symmetric, create RSP in the reverse direction.
 426             if (sfp.isSymmetric()) {
 427                 LOG.warn("getRenderedServicePathFromSfc: symmetric RSP is not supported yet");
 428                 /*LOG.info("SFP = {} is symmetric, installing RSP in the reverse direction!!", sfpName);
 429                 String rspNameRev = rspName + "-Reverse";
 430                 RenderedServicePath rspReverse = mdsalUtils.read(LogicalDatastoreType.OPERATIONAL,
 431                         sfcUtils.getRspId(rspNameRev));
 432                 if (rspReverse == null) {
 433                     rspReverse = SfcProviderRenderedPathAPI.createSymmetricRenderedServicePathAndState(rsp);
 434                     if (rspReverse == null) {
 435                         LOG.warn("failed to add reverse RSP");
 436                         return null;
 437                     }
 438                 }*/
 439             }
 440         }
 441         return rsp;
 442     }
 443
 444     private long getSfPort(Node bridgeNode, String sfPortName) {
 445         return getOFPort(bridgeNode, sfPortName);
 446     }
 447
 448     private long getOFPort(Node bridgeNode, String portName) {
 449         long ofPort = 0L;
 450         OvsdbTerminationPointAugmentation port =
 451                 southbound.extractTerminationPointAugmentation(bridgeNode, portName);
 452         if (port != null) {
 453             ofPort = southbound.getOFPort(port);
 454         }
 455         if (ofPort == 0L) {
 456             for (int i = 0; i < 5; i++) {
 457                 LOG.info("Looking for ofPort {}, try: {}", portName, i);
 458                 TerminationPoint tp = southbound.readTerminationPoint(bridgeNode, null, portName);
 459                 if (tp != null) {
 460                     port = tp.getAugmentation(OvsdbTerminationPointAugmentation.class);
 461                     if (port != null) {
 462                         ofPort = southbound.getOFPort(port);
 463                         LOG.info("found ofPort {} - {}, try: {}", portName, ofPort, i);
 464                         break;
 465                     }
 466                 }
 467                 try {
 468                     Thread.sleep(1000);
 469                 } catch (InterruptedException e) {
 470                     LOG.error("Interrupted while waiting for ofPort {}", portName, e);
 471                 }
 472             }
 473         }
 474         return ofPort;
 475     }
 476
 477     private String getMacFromExternalIds(Node bridgeNode, String portName) {
 478         String mac = null;
 479         OvsdbTerminationPointAugmentation port = southbound.getTerminationPointOfBridge(bridgeNode, portName);
 480         LOG.info("getMac: portName: {}, bridgeNode: {},,, port: {}", portName, bridgeNode, port);
 481         if (port != null && port.getInterfaceExternalIds() != null) {
 482             mac = southbound.getInterfaceExternalIdsValue(port, Constants.EXTERNAL_ID_VM_MAC);
 483         }
 484         return mac;
 485     }
 486
 487     @Override
 488     public void setDependencies(ServiceReference serviceReference) {
 489         nodeCacheManager = (NodeCacheManager) ServiceHelper.getGlobalInstance(NodeCacheManager.class, this);
 490         southbound = (Southbound) ServiceHelper.getGlobalInstance(Southbound.class, this);
 491         sfcClassifierService =
 492                 (ISfcClassifierService) ServiceHelper.getGlobalInstance(ISfcClassifierService.class, this);
 493         LOG.info("sfcClassifierService= {}", sfcClassifierService);
 494     }
 495 }