import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.BitSet;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.jgrapht.GraphPath;
import org.opendaylight.transportpce.common.ResponseCodes;
+import org.opendaylight.transportpce.common.StringConstants;
+import org.opendaylight.transportpce.common.fixedflex.GridConstant;
+import org.opendaylight.transportpce.common.fixedflex.GridUtils;
import org.opendaylight.transportpce.pce.constraints.PceConstraints;
import org.opendaylight.transportpce.pce.constraints.PceConstraints.ResourcePair;
import org.opendaylight.transportpce.pce.networkanalyzer.PceNode;
import org.opendaylight.transportpce.pce.networkanalyzer.PceResult;
+import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.pce.rev210701.SpectrumAssignment;
+import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.pce.rev210701.SpectrumAssignmentBuilder;
import org.opendaylight.yang.gen.v1.http.org.openroadm.network.types.rev200529.OpenroadmLinkType;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.rev180226.NodeId;
import org.opendaylight.yangtools.yang.common.Uint16;
/* Logging. */
private static final Logger LOG = LoggerFactory.getLogger(PostAlgoPathValidator.class);
- private static final int MAX_WAWELENGTH = 96;
private static final double MIN_OSNR_W100G = 17;
private static final double TRX_OSNR = 33;
private static final double ADD_OSNR = 30;
pceResult.setRC(ResponseCodes.RESPONSE_FAILED);
return pceResult;
}
-
int tribSlotNb = 1;
+ int spectralWidthSlotNumber = GridConstant.SPECTRAL_WIDTH_SLOT_NUMBER_MAP
+ .getOrDefault(serviceType, GridConstant.NB_SLOTS_100G);
+ SpectrumAssignment spectrumAssignment = null;
//variable to deal with 1GE (Nb=1) and 10GE (Nb=10) cases
switch (serviceType) {
-
- case "100GE":
- case "OTU4":
- // choose wavelength available in all nodes of the path
- Long waveL = chooseWavelength(path, allPceNodes);
+ case StringConstants.SERVICE_TYPE_OTUC4:
+ case StringConstants.SERVICE_TYPE_400GE:
+ spectralWidthSlotNumber = GridConstant.SPECTRAL_WIDTH_SLOT_NUMBER_MAP
+ .getOrDefault(serviceType, GridConstant.NB_SLOTS_400G);
+ //fallthrough
+ case StringConstants.SERVICE_TYPE_100GE_T:
+ case StringConstants.SERVICE_TYPE_OTU4:
+ spectrumAssignment = getSpectrumAssignment(path, allPceNodes, spectralWidthSlotNumber);
pceResult.setServiceType(serviceType);
- if (waveL < 0) {
+ if (spectrumAssignment.getBeginIndex().equals(Uint16.valueOf(0))
+ && spectrumAssignment.getStopIndex().equals(Uint16.valueOf(0))) {
pceResult.setRC(ResponseCodes.RESPONSE_FAILED);
pceResult.setLocalCause(PceResult.LocalCause.NO_PATH_EXISTS);
return pceResult;
}
- pceResult.setResultWavelength(waveL);
- LOG.info("In PostAlgoPathValidator: chooseWavelength WL found {} {}", waveL, path);
+ if (spectrumAssignment.getFlexGrid()) {
+ LOG.info("Spectrum assignment flexgrid mode");
+ pceResult.setResultWavelength(GridConstant.IRRELEVANT_WAVELENGTH_NUMBER);
+ } else {
+ LOG.info("Spectrum assignment fixedgrid mode");
+ pceResult.setResultWavelength(
+ GridUtils.getWaveLengthIndexFromSpectrumAssigment(spectrumAssignment.getBeginIndex()
+ .toJava()));
+ }
+ pceResult.setMinFreq(GridUtils.getStartFrequencyFromIndex(spectrumAssignment.getBeginIndex().toJava()));
+ pceResult.setMaxFreq(GridUtils.getStopFrequencyFromIndex(spectrumAssignment.getStopIndex().toJava()));
+ LOG.info("In PostAlgoPathValidator: spectrum assignment found {} {}", spectrumAssignment, path);
// Check the OSNR
if (!checkOSNR(path)) {
pceResult.setRC(ResponseCodes.RESPONSE_OK);
pceResult.setLocalCause(PceResult.LocalCause.NONE);
-
break;
-
- case "10GE":
- tribSlotNb = 8;
+ case StringConstants.SERVICE_TYPE_100GE_M:
+ case StringConstants.SERVICE_TYPE_10GE:
+ tribSlotNb = StringConstants.SERVICE_TYPE_10GE.equals(serviceType) ? 8 : 20;
//fallthrough
- case "1GE":
+ case StringConstants.SERVICE_TYPE_1GE:
pceResult.setRC(ResponseCodes.RESPONSE_FAILED);
pceResult.setServiceType(serviceType);
Map<String, Uint16> tribPort = chooseTribPort(path, allPceNodes);
tribPort, tribSlot, tribSlotNb);
}
break;
-
- case "ODU4":
+ case StringConstants.SERVICE_TYPE_ODU4:
+ case StringConstants.SERVICE_TYPE_ODUC4:
pceResult.setRC(ResponseCodes.RESPONSE_OK);
- LOG.info("In PostAlgoPathValidator: ODU4 path found {}", path);
+ LOG.info("In PostAlgoPathValidator: ODU4/ODUC4 path found {}", path);
break;
-
default:
pceResult.setRC(ResponseCodes.RESPONSE_FAILED);
LOG.warn("In PostAlgoPathValidator checkPath: unsupported serviceType {} found {}",
serviceType, path);
break;
}
-
return pceResult;
}
- // Choose the first available wavelength from the source to the destination
- private Long chooseWavelength(GraphPath<String, PceGraphEdge> path, Map<NodeId, PceNode> allPceNodes) {
- Long wavelength = -1L;
- for (long i = 1; i <= MAX_WAWELENGTH; i++) {
- boolean completed = true;
- LOG.debug("In chooseWavelength: {} {}", path.getLength(), path);
- for (PceGraphEdge edge : path.getEdgeList()) {
- LOG.debug("In chooseWavelength: source {} ", edge.link().getSourceId());
- PceNode pceNode = allPceNodes.get(edge.link().getSourceId());
- if (!pceNode.checkWL(i)) {
- completed = false;
- break;
- }
- }
- if (completed) {
- wavelength = i;
- break;
- }
- }
- return wavelength;
- }
-
// Check the latency
private boolean checkLatency(Long maxLatency, GraphPath<String, PceGraphEdge> path) {
double latency = 0;
return (CONST_OSNR / linkOsnrLu);
}
-}
+ /**
+ * Get spectrum assignment for path.
+ *
+ * @param path the path for which we get spectrum assignment.
+ * @param allPceNodes all optical nodes.
+ * @param spectralWidthSlotNumber number of slot for spectral width. Depends on
+ * service type.
+ * @return a spectrum assignment object which contains begin and end index. If
+ * no spectrum assignment found, beginIndex = stopIndex = 0
+ */
+ private SpectrumAssignment getSpectrumAssignment(GraphPath<String, PceGraphEdge> path,
+ Map<NodeId, PceNode> allPceNodes, int spectralWidthSlotNumber) {
+ byte[] freqMap = new byte[GridConstant.NB_OCTECTS];
+ Arrays.fill(freqMap, (byte) GridConstant.AVAILABLE_SLOT_VALUE);
+ BitSet result = BitSet.valueOf(freqMap);
+ boolean isFlexGrid = true;
+ LOG.info("Processing path {} with length {}", path, path.getLength());
+ BitSet pceNodeFreqMap;
+ for (PceGraphEdge edge : path.getEdgeList()) {
+ LOG.info("Processing source {} ", edge.link().getSourceId());
+ if (allPceNodes.containsKey(edge.link().getSourceId())) {
+ PceNode pceNode = allPceNodes.get(edge.link().getSourceId());
+ LOG.info("Processing PCE node {}", pceNode);
+ if (StringConstants.OPENROADM_DEVICE_VERSION_1_2_1.equals(pceNode.getVersion())) {
+ LOG.info("Node {}: version is {} and slot width granularity is {} -> fixed grid mode",
+ pceNode.getNodeId(), pceNode.getVersion(), pceNode.getSlotWidthGranularity());
+ isFlexGrid = false;
+ }
+ if ((pceNode.getSlotWidthGranularity().equals(GridConstant.SLOT_WIDTH_50))
+ && (pceNode.getCentralFreqGranularity().equals(GridConstant.SLOT_WIDTH_50))) {
+ LOG.info("Node {}: version is {} with slot width granularity {} and central "
+ + "frequency granularity is {} -> fixed grid mode",
+ pceNode.getNodeId(), pceNode.getVersion(), pceNode.getSlotWidthGranularity(),
+ pceNode.getCentralFreqGranularity());
+ isFlexGrid = false;
+ }
+ pceNodeFreqMap = pceNode.getBitSetData();
+ LOG.debug("Pce node bitset {}", pceNodeFreqMap);
+ if (pceNodeFreqMap != null) {
+ result.and(pceNodeFreqMap);
+ LOG.debug("intermediate bitset {}", result);
+ }
+ }
+ }
+ LOG.debug("Bitset result {}", result);
+ return computeBestSpectrumAssignment(result, spectralWidthSlotNumber, isFlexGrid);
+ }
+
+ /**
+ * Compute spectrum assignment from spectrum occupation for spectral width.
+ *
+ * @param spectrumOccupation the spectrum occupation BitSet.
+ * @param spectralWidthSlotNumber the nb slots for spectral width.
+ * @param isFlexGrid true if flexible grid, false otherwise.
+ * @return a spectrum assignment object which contains begin and stop index. If
+ * no spectrum assignment found, beginIndex = stopIndex = 0
+ */
+ private SpectrumAssignment computeBestSpectrumAssignment(BitSet spectrumOccupation, int spectralWidthSlotNumber,
+ boolean isFlexGrid) {
+ SpectrumAssignmentBuilder spectrumAssignmentBldr = new SpectrumAssignmentBuilder()
+ .setBeginIndex(Uint16.valueOf(0))
+ .setStopIndex(Uint16.valueOf(0))
+ .setFlexGrid(isFlexGrid);
+ BitSet referenceBitSet = new BitSet(spectralWidthSlotNumber);
+ referenceBitSet.set(0, spectralWidthSlotNumber);
+ int nbSteps = 1;
+ if (isFlexGrid) {
+ nbSteps = spectralWidthSlotNumber;
+ }
+ //higher is the frequency, smallest is the wavelength number
+ //in operational, the allocation is done through wavelength starting from the smallest
+ //so we have to loop from the last element of the spectrum occupation
+ for (int i = spectrumOccupation.size(); i >= spectralWidthSlotNumber; i -= nbSteps) {
+ if (spectrumOccupation.get(i - spectralWidthSlotNumber, i).equals(referenceBitSet)) {
+ spectrumAssignmentBldr.setBeginIndex(Uint16.valueOf(i - spectralWidthSlotNumber));
+ spectrumAssignmentBldr.setStopIndex(Uint16.valueOf(i - 1));
+ break;
+ }
+ }
+ return spectrumAssignmentBldr.build();
+ }
+}
\ No newline at end of file
Code Review / transportpce.git / blobdiff