Refactor PCE network analyzer PceOtnNode step 5
[transportpce.git] / pce / src / main / java / org / opendaylight / transportpce / pce / networkanalyzer / PceOtnNode.java
1 /*
2  * Copyright © 2019 Orange, 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.transportpce.pce.networkanalyzer;
10
11 import java.math.BigDecimal;
12 import java.util.ArrayList;
13 import java.util.BitSet;
14 import java.util.Comparator;
15 import java.util.HashMap;
16 import java.util.List;
17 import java.util.Map;
18 import java.util.TreeMap;
19 import java.util.stream.Collectors;
20 import org.opendaylight.transportpce.common.StringConstants;
21 import org.opendaylight.yang.gen.v1.http.org.openroadm.common.state.types.rev191129.State;
22 import org.opendaylight.yang.gen.v1.http.org.openroadm.equipment.states.types.rev191129.AdminStates;
23 import org.opendaylight.yang.gen.v1.http.org.openroadm.network.topology.types.rev200327.xpdr.odu.switching.pools.OduSwitchingPools;
24 import org.opendaylight.yang.gen.v1.http.org.openroadm.network.topology.types.rev200327.xpdr.odu.switching.pools.odu.switching.pools.NonBlockingList;
25 import org.opendaylight.yang.gen.v1.http.org.openroadm.network.types.rev200529.OpenroadmNodeType;
26 import org.opendaylight.yang.gen.v1.http.org.openroadm.network.types.rev200529.OpenroadmTpType;
27 import org.opendaylight.yang.gen.v1.http.org.openroadm.network.types.rev200529.xpdr.tp.supported.interfaces.SupportedInterfaceCapability;
28 import org.opendaylight.yang.gen.v1.http.org.openroadm.otn.common.types.rev200327.ODTU4TsAllocated;
29 import org.opendaylight.yang.gen.v1.http.org.openroadm.otn.common.types.rev200327.ODTUCnTs;
30 import org.opendaylight.yang.gen.v1.http.org.openroadm.otn.network.topology.rev200529.Node1;
31 import org.opendaylight.yang.gen.v1.http.org.openroadm.otn.network.topology.rev200529.TerminationPoint1;
32 import org.opendaylight.yang.gen.v1.http.org.openroadm.otn.network.topology.rev200529.networks.network.node.SwitchingPools;
33 import org.opendaylight.yang.gen.v1.http.org.openroadm.otn.network.topology.rev200529.networks.network.node.termination.point.XpdrTpPortConnectionAttributes;
34 import org.opendaylight.yang.gen.v1.http.org.openroadm.port.types.rev200327.If100GEODU4;
35 import org.opendaylight.yang.gen.v1.http.org.openroadm.port.types.rev200327.If10GEODU2e;
36 import org.opendaylight.yang.gen.v1.http.org.openroadm.port.types.rev200327.If1GEODU0;
37 import org.opendaylight.yang.gen.v1.http.org.openroadm.port.types.rev200327.IfOCHOTU4ODU4;
38 import org.opendaylight.yang.gen.v1.http.org.openroadm.port.types.rev200327.IfOtsiOtsigroup;
39 import org.opendaylight.yang.gen.v1.http.org.openroadm.port.types.rev200327.SupportedIfCapability;
40 import org.opendaylight.yang.gen.v1.http.org.openroadm.xponder.rev200529.xpdr.otn.tp.attributes.OdtuTpnPool;
41 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.rev180226.NodeId;
42 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.rev180226.networks.network.Node;
43 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.topology.rev180226.TpId;
44 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.topology.rev180226.networks.network.node.TerminationPoint;
45 import org.opendaylight.yangtools.yang.common.Uint16;
46 import org.slf4j.Logger;
47 import org.slf4j.LoggerFactory;
48
49 public class PceOtnNode implements PceNode {
50     ////////////////////////// OTN NODES ///////////////////////////
51     /*
52      * For This Class the node passed shall be at the otn-openroadm Layer
53      */
54
55     private static final Logger LOG = LoggerFactory.getLogger(PceOtnNode.class);
56     private static final List<String> SERVICE_TYPE_ODU_LIST = List.of(
57         StringConstants.SERVICE_TYPE_ODU4,
58         StringConstants.SERVICE_TYPE_ODUC4,
59         StringConstants.SERVICE_TYPE_ODUC3,
60         StringConstants.SERVICE_TYPE_ODUC2);
61     private static final List<OpenroadmNodeType> VALID_NODETYPES_LIST = List.of(
62         OpenroadmNodeType.MUXPDR,
63         OpenroadmNodeType.SWITCH,
64         OpenroadmNodeType.TPDR);
65     private static final Map<String, Class<? extends SupportedIfCapability>> SERVICE_TYPE_ETH_CLASS_MAP = Map.of(
66         StringConstants.SERVICE_TYPE_1GE, If1GEODU0.class,
67         StringConstants.SERVICE_TYPE_10GE, If10GEODU2e.class,
68         StringConstants.SERVICE_TYPE_100GE_M, If100GEODU4.class,
69         StringConstants.SERVICE_TYPE_100GE_S, If100GEODU4.class);
70     private static final Map<String, Integer> SERVICE_TYPE_ETH_TS_NB_MAP = Map.of(
71         StringConstants.SERVICE_TYPE_1GE, 1,
72         StringConstants.SERVICE_TYPE_10GE, 10,
73         StringConstants.SERVICE_TYPE_100GE_M, 20);
74     private static final Map<String, String> SERVICE_TYPE_ETH_ODU_STRING_MAP = Map.of(
75         StringConstants.SERVICE_TYPE_1GE, "ODU0",
76         StringConstants.SERVICE_TYPE_10GE, "ODU2e",
77         StringConstants.SERVICE_TYPE_100GE_M, "ODU4");
78
79     private boolean valid = true;
80
81     private final Node node;
82     private final NodeId nodeId;
83     private final OpenroadmNodeType nodeType;
84     private final String pceNodeType;
85     private final String otnServiceType;
86     private String modeType;
87     // TODO: not adding state check in this class as otn topology has not been modified
88     private final AdminStates adminStates;
89     private final State state;
90
91     private Map<String, List<Uint16>> tpAvailableTribPort = new TreeMap<>();
92     private Map<String, List<Uint16>> tpAvailableTribSlot = new TreeMap<>();
93     private Map<String, OpenroadmTpType> availableXponderTp = new TreeMap<>();
94     private List<String> usedXpdrNWTps = new ArrayList<>();
95     private List<TpId> availableXpdrNWTps;
96     private List<TpId> usableXpdrNWTps;
97     private List<String> usedXpdrClientTps = new ArrayList<>();
98     private List<TpId> availableXpdrClientTps;
99     private List<TpId> usableXpdrClientTps;
100
101     private List<PceLink> outgoingLinks = new ArrayList<>();
102     private Map<String, String> clientPerNwTp = new HashMap<>();
103     private String clientPort;
104
105     public PceOtnNode(Node node, OpenroadmNodeType nodeType, NodeId nodeId, String pceNodeType, String serviceType,
106             String clientPort) {
107         this.node = node;
108         this.nodeId = nodeId;
109         this.nodeType = nodeType;
110         this.pceNodeType = pceNodeType;
111         this.otnServiceType = serviceType;
112         this.tpAvailableTribSlot.clear();
113         this.usedXpdrNWTps.clear();
114         this.availableXpdrNWTps = new ArrayList<>();
115         this.usableXpdrNWTps = new ArrayList<>();
116         this.usedXpdrClientTps.clear();
117         this.availableXpdrClientTps = new ArrayList<>();
118         this.usableXpdrClientTps = new ArrayList<>();
119         this.adminStates = node
120             .augmentation(org.opendaylight.yang.gen.v1.http.org.openroadm.common.network.rev200529.Node1.class)
121             .getAdministrativeState();
122         this.state = node
123             .augmentation(org.opendaylight.yang.gen.v1.http.org.openroadm.common.network.rev200529.Node1.class)
124             .getOperationalState();
125         this.tpAvailableTribPort.clear();
126         checkAvailableTribPort();
127         this.tpAvailableTribSlot.clear();
128         checkAvailableTribSlot();
129         this.clientPort = clientPort;
130         if (node == null || nodeId == null || nodeType == null || !VALID_NODETYPES_LIST.contains(nodeType)) {
131             LOG.error("PceOtnNode: one of parameters is not populated : nodeId, node type");
132             this.valid = false;
133         }
134     }
135
136     public void initXndrTps(String mode) {
137         LOG.info("PceOtnNode: initXndrTps for node {}", this.nodeId.getValue());
138         this.availableXponderTp.clear();
139         this.modeType = mode;
140         List<TerminationPoint> allTps =
141             new ArrayList<>(
142                 this.node.augmentation(
143                     org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.topology.rev180226
144                         .Node1.class)
145                 .nonnullTerminationPoint()
146                 .values());
147         this.valid = false;
148         if (allTps.isEmpty()) {
149             LOG.error("PceOtnNode: initXndrTps: XPONDER TerminationPoint list is empty for node {}", this);
150             return;
151         }
152         for (TerminationPoint tp : allTps) {
153             org.opendaylight.yang.gen.v1.http.org.openroadm.common.network.rev200529.TerminationPoint1 ocnTp1
154                 = tp.augmentation(org.opendaylight.yang.gen.v1.http.org.openroadm.common.network.rev200529
155                         .TerminationPoint1.class);
156             if (ocnTp1 == null) {
157                 LOG.warn("null ocn TP {}", tp);
158                 continue;
159             }
160             //TODO many nested structures below, this needs to be reworked
161             switch (ocnTp1.getTpType()) {
162                 case XPONDERNETWORK:
163                     if (tp.augmentation(TerminationPoint1.class) == null) {
164                         continue;
165                     }
166                     TerminationPoint1 ontTp1 = tp.augmentation(TerminationPoint1.class);
167                     if (SERVICE_TYPE_ODU_LIST.contains(this.otnServiceType)
168                             || StringConstants.SERVICE_TYPE_100GE_S.equals(this.otnServiceType)) {
169                             // TODO verify the capability of network port to support ODU4 CTP interface creation
170                         if (!checkTpForOdtuTermination(ontTp1)) {
171                             LOG.error("TP {} of {} does not allow ODU4 termination creation",
172                                 tp.getTpId().getValue(), node.getNodeId().getValue());
173                             continue;
174                         }
175                     } else if (SERVICE_TYPE_ETH_TS_NB_MAP.containsKey(this.otnServiceType)) {
176                         if (!checkOdtuTTPforLoOduCreation(
177                                 ontTp1, SERVICE_TYPE_ETH_TS_NB_MAP.get(this.otnServiceType))) {
178                             LOG.error("TP {} of {} does not allow {} termination creation",
179                                 tp.getTpId().getValue(),
180                                 SERVICE_TYPE_ETH_ODU_STRING_MAP.get(this.otnServiceType),
181                                 node.getNodeId().getValue());
182                             continue;
183                         }
184                     } else {
185                         LOG.error("TP {} of {} does not allow any termination creation",
186                             tp.getTpId().getValue(), node.getNodeId().getValue());
187                         continue;
188                     }
189                     LOG.info("TP {} of XPONDER {} is validated", tp.getTpId(), node.getNodeId().getValue());
190                     this.availableXpdrNWTps.add(tp.getTpId());
191                     break;
192
193                 case XPONDERCLIENT:
194                     if (SERVICE_TYPE_ETH_CLASS_MAP.containsKey(otnServiceType)) {
195                         if (tp.augmentation(TerminationPoint1.class) == null) {
196                             continue;
197                         }
198                         if (checkClientTp(tp.augmentation(TerminationPoint1.class))) {
199                             LOG.info("TP {} of XPONDER {} is validated", tp.getTpId(), node.getNodeId().getValue());
200                             this.availableXpdrClientTps.add(tp.getTpId());
201                         } else {
202                             LOG.error("TP {} of {} does not allow lo-ODU (ODU2e or ODU0) termination creation",
203                                 tp.getTpId().getValue(), node.getNodeId().getValue());
204                         }
205                     }
206                     break;
207
208                 default:
209                     LOG.debug("unsupported ocn TP type {}", ocnTp1.getTpType());
210             }
211         }
212         this.valid = SERVICE_TYPE_ODU_LIST.contains(this.otnServiceType)
213                 || SERVICE_TYPE_ETH_CLASS_MAP.containsKey(this.otnServiceType)
214                     && checkSwPool(availableXpdrNWTps, availableXpdrClientTps);
215     }
216
217     private boolean checkSwPool(List<TpId> netwTps, List<TpId> clientTps) {
218
219         if (netwTps == null) {
220             return false;
221         }
222         Node1 node1 = node.augmentation(Node1.class);
223         if (node1 == null) {
224             return false;
225         }
226         List<NonBlockingList> nblList = new ArrayList<>(
227                 node1.getSwitchingPools().nonnullOduSwitchingPools()
228                         .values().stream().findFirst().get()
229                                 .getNonBlockingList().values());
230         if (nblList == null) {
231             return false;
232         }
233         netwTps.sort(Comparator.comparing(TpId::getValue));
234
235         switch (modeType) {
236
237             case "intermediate":
238                 for (NonBlockingList nbl: nblList) {
239                     for (TpId nwTp : netwTps) {
240                         if (nbl.getTpList().contains(nwTp)) {
241                             usableXpdrNWTps.add(nwTp);
242                         }
243                         if (usableXpdrNWTps.size() >= 2) {
244                             return true;
245                         }
246                     }
247                 }
248                 return false;
249
250             case "AZ":
251                 if (clientTps == null) {
252                     return false;
253                 }
254                 clientTps.sort(Comparator.comparing(TpId::getValue));
255                 for (NonBlockingList nbl: nblList) {
256                     for (TpId nwTp : netwTps) {
257                         for (TpId clTp : clientTps) {
258                             if (nbl.getTpList().contains(clTp) && nbl.getTpList().contains(nwTp)) {
259                                 usableXpdrClientTps.add(clTp);
260                                 usableXpdrNWTps.add(nwTp);
261                             }
262                             if (usableXpdrClientTps.size() >= 1 && usableXpdrNWTps.size() >= 1
263                                     && (this.clientPort == null || this.clientPort.equals(clTp.getValue()))) {
264                                 clientPerNwTp.put(nwTp.getValue(), clTp.getValue());
265                                 return true;
266                             }
267                         }
268                     }
269                 }
270                 return false;
271
272             default:
273                 LOG.error("Unsupported mode type {}", modeType);
274                 return false;
275         }
276     }
277
278     private boolean checkTpForOdtuTermination(TerminationPoint1 ontTp1) {
279         for (SupportedInterfaceCapability sic : ontTp1.getTpSupportedInterfaces().getSupportedInterfaceCapability()
280                 .values()) {
281             LOG.info("in checkTpForOduTermination - sic = {}", sic.getIfCapType());
282             if ((sic.getIfCapType().equals(IfOCHOTU4ODU4.class) || sic.getIfCapType().equals(IfOtsiOtsigroup.class))
283                 && (ontTp1.getXpdrTpPortConnectionAttributes() == null
284                     || ontTp1.getXpdrTpPortConnectionAttributes().getTsPool() == null)) {
285                 return true;
286             }
287         }
288         return false;
289     }
290
291     private boolean checkOdtuTTPforLoOduCreation(TerminationPoint1 ontTp1, int tsNb) {
292         XpdrTpPortConnectionAttributes portConAttr = ontTp1.getXpdrTpPortConnectionAttributes();
293         if (portConAttr == null
294                 || portConAttr.getTsPool() == null
295                 || portConAttr.getTsPool().size() < tsNb
296                 || portConAttr.getOdtuTpnPool() == null) {
297             return false;
298         }
299         return checkFirstOdtuTpn(portConAttr.getOdtuTpnPool().values().stream().findFirst().get());
300     }
301
302     private boolean checkFirstOdtuTpn(OdtuTpnPool otPool) {
303         return (otPool.getOdtuType().equals(ODTU4TsAllocated.class)
304                 || otPool.getOdtuType().equals(ODTUCnTs.class))
305             && !otPool.getTpnPool().isEmpty();
306     }
307
308     private boolean checkClientTp(TerminationPoint1 ontTp1) {
309         for (SupportedInterfaceCapability sic : ontTp1.getTpSupportedInterfaces().getSupportedInterfaceCapability()
310                 .values()) {
311             LOG.debug("in checkTpForOduTermination - sic = {}", sic.getIfCapType());
312             // we could also check the administrative status of the tp
313             if (SERVICE_TYPE_ETH_CLASS_MAP.containsKey(otnServiceType)
314                     && sic.getIfCapType().equals(SERVICE_TYPE_ETH_CLASS_MAP.get(otnServiceType))) {
315                 return true;
316             }
317         }
318         return false;
319     }
320
321     public void validateXponder(String anodeId, String znodeId) {
322         if (!isValid()) {
323             return;
324         }
325         if (this.nodeId.getValue().equals(anodeId) || (this.nodeId.getValue().equals(znodeId))) {
326             initXndrTps("AZ");
327         } else if (OpenroadmNodeType.SWITCH.equals(this.nodeType)) {
328             initXndrTps("intermediate");
329         } else {
330             LOG.info("validateAZxponder: XPONDER is ignored == {}", nodeId.getValue());
331             valid = false;
332         }
333     }
334
335     public boolean validateSwitchingPoolBandwidth(TerminationPoint tp1, TerminationPoint tp2, Long neededBW) {
336         if (this.nodeType != OpenroadmNodeType.TPDR) {
337             return true;
338         }
339         Node1 node1 = node.augmentation(Node1.class);
340         SwitchingPools sp = node1.getSwitchingPools();
341         List<OduSwitchingPools> osp = new ArrayList<>(sp.nonnullOduSwitchingPools().values());
342         for (OduSwitchingPools ospx : osp) {
343             List<NonBlockingList> nbl = new ArrayList<>(ospx.nonnullNonBlockingList().values());
344             for (NonBlockingList nbll : nbl) {
345                 if (nbll.getAvailableInterconnectBandwidth().toJava() >= neededBW && nbll.getTpList() != null
346                         && nbll.getTpList().contains(tp1.getTpId()) && nbll.getTpList().contains(tp2.getTpId())) {
347                     LOG.debug("validateSwitchingPoolBandwidth: couple  of tp {} x {} valid for crossconnection",
348                         tp1.getTpId(), tp2.getTpId());
349                     return true;
350                 }
351             }
352         }
353         LOG.debug("validateSwitchingPoolBandwidth: No valid Switching pool for crossconnecting tp {} and {}",
354             tp1.getTpId(), tp2.getTpId());
355         return false;
356     }
357
358     public void validateIntermediateSwitch() {
359         if (!isValid()) {
360             return;
361         }
362         if (this.nodeType != OpenroadmNodeType.SWITCH) {
363             return;
364         }
365         // Validate switch for use as an intermediate XPONDER on the path
366         initXndrTps("intermediate");
367         if (this.valid) {
368             LOG.info("validateIntermediateSwitch: Switch usable for transit == {}", nodeId.getValue());
369         } else {
370             LOG.debug("validateIntermediateSwitch: Switch unusable for transit == {}", nodeId.getValue());
371         }
372     }
373
374     public void checkAvailableTribPort() {
375         for (TerminationPoint tp :
376             node.augmentation(
377                     org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.topology.rev180226
378                         .Node1.class)
379                 .getTerminationPoint().values().stream()
380                 .filter(type -> type
381                     .augmentation(
382                         org.opendaylight.yang.gen.v1.http.org.openroadm.common.network.rev200529
383                             .TerminationPoint1.class)
384                     .getTpType()
385                     .equals(OpenroadmTpType.XPONDERNETWORK))
386                 .collect(Collectors.toList())) {
387             XpdrTpPortConnectionAttributes portConAttr =
388                 tp.augmentation(TerminationPoint1.class).getXpdrTpPortConnectionAttributes();
389             if (portConAttr != null && portConAttr.getOdtuTpnPool() != null) {
390                 OdtuTpnPool otPool = portConAttr.getOdtuTpnPool().values().stream().findFirst().get();
391                 if (checkFirstOdtuTpn(otPool)) {
392                     tpAvailableTribPort.put(tp.getTpId().getValue(), otPool.getTpnPool());
393                 }
394             }
395         }
396     }
397
398     public void checkAvailableTribSlot() {
399         for (TerminationPoint tp :
400             node.augmentation(
401                 org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.topology.rev180226.Node1.class)
402             .getTerminationPoint().values().stream()
403             .filter(type -> type
404                 .augmentation(
405                     org.opendaylight.yang.gen.v1.http.org.openroadm.common.network.rev200529.TerminationPoint1.class)
406                 .getTpType().equals(OpenroadmTpType.XPONDERNETWORK))
407             .collect(Collectors.toList())
408         ) {
409             XpdrTpPortConnectionAttributes portConAttr =
410                 tp.augmentation(TerminationPoint1.class).getXpdrTpPortConnectionAttributes();
411             if (portConAttr != null && portConAttr.getTsPool() != null) {
412                 tpAvailableTribSlot.put(tp.getTpId().getValue(), portConAttr.getTsPool());
413             }
414         }
415     }
416
417     public boolean isValid() {
418         if (nodeId == null || nodeType == null
419                 || this.getSupNetworkNodeId() == null || this.getSupClliNodeId() == null) {
420             LOG.error("PceNode: one of parameters is not populated : nodeId, node type, supporting nodeId");
421             valid = false;
422         }
423         return valid;
424     }
425
426     @Override
427     public void addOutgoingLink(PceLink outLink) {
428         this.outgoingLinks.add(outLink);
429     }
430
431     @Override
432     public List<PceLink> getOutgoingLinks() {
433         return outgoingLinks;
434     }
435
436     @Override
437     public AdminStates getAdminStates() {
438         return adminStates;
439     }
440
441     @Override
442     public State getState() {
443         return state;
444     }
445
446     @Override
447     public String getXpdrClient(String tp) {
448         return this.clientPerNwTp.get(tp);
449     }
450
451     @Override
452     public String toString() {
453         return "PceNode type=" + nodeType + " ID=" + nodeId.getValue() + " CLLI=" + this.getSupClliNodeId();
454     }
455
456     public void printLinksOfNode() {
457         LOG.info(" outgoing links of node {} : {} ", nodeId.getValue(), this.getOutgoingLinks());
458     }
459
460     @Override
461     public Map<String, List<Uint16>> getAvailableTribPorts() {
462         return tpAvailableTribPort;
463     }
464
465     @Override
466     public Map<String, List<Uint16>> getAvailableTribSlots() {
467         return tpAvailableTribSlot;
468     }
469
470     public List<TpId> getUsableXpdrNWTps() {
471         return usableXpdrNWTps;
472     }
473
474     public List<TpId> getUsableXpdrClientTps() {
475         return usableXpdrClientTps;
476     }
477
478     @Override
479     public String getPceNodeType() {
480         return this.pceNodeType;
481     }
482
483     @Override
484     public String getSupNetworkNodeId() {
485         return MapUtils.getSupNetworkNode(this.node);
486     }
487
488     @Override
489     public String getSupClliNodeId() {
490         return MapUtils.getSupClliNode(this.node);
491     }
492
493     @Override
494     public String getRdmSrgClient(String tp, String direction) {
495         return null;
496     }
497
498     @Override
499     public NodeId getNodeId() {
500         return nodeId;
501     }
502
503     @Override
504     public boolean checkTP(String tp) {
505         return false;
506     }
507
508     /*
509     * (non-Javadoc)
510     *
511     * @see org.opendaylight.transportpce.pce.networkanalyzer.PceNode#getVersion()
512     */
513     @Override
514     public String getVersion() {
515         // TODO Auto-generated method stub
516         return null;
517     }
518
519     @Override
520     public BitSet getBitSetData() {
521         // TODO Auto-generated method stub
522         return null;
523     }
524
525     /*
526     * (non-Javadoc)
527     *
528     * @see org.opendaylight.transportpce.pce.networkanalyzer.PceNode#getSlotWidthGranularity()
529     */
530     @Override
531     public BigDecimal getSlotWidthGranularity() {
532         return null;
533     }
534
535     /*
536      * (non-Javadoc)
537      *
538      * @see org.opendaylight.transportpce.pce.networkanalyzer.PceNode#getCentralFreqGranularity()
539      */
540     @Override
541     public BigDecimal getCentralFreqGranularity() {
542         return null;
543     }
544 }