Examples with UnroutableFlowException org.openkilda.pce.exception.UnroutableFlowException used on opensource projects

Example 21 with UnroutableFlowException

use of org.openkilda.pce.exception.UnroutableFlowException in project open-kilda by telstra.

the class BaseResourceAllocationAction method allocatePathPair.

@SneakyThrows
protected GetPathsResult allocatePathPair(Flow flow, PathId newForwardPathId, PathId newReversePathId, boolean forceToIgnoreBandwidth, List<PathId> pathsToReuseBandwidth, FlowPathPair oldPaths, boolean allowOldPaths, String sharedBandwidthGroupId, Predicate<GetPathsResult> whetherCreatePathSegments) throws RecoverableException, UnroutableFlowException, ResourceAllocationException {
    // Lazy initialisable map with reused bandwidth...
    Supplier<Map<IslEndpoints, Long>> reuseBandwidthPerIsl = Suppliers.memoize(() -> {
        Map<IslEndpoints, Long> result = new HashMap<>();
        if (pathsToReuseBandwidth != null && !pathsToReuseBandwidth.isEmpty()) {
            pathsToReuseBandwidth.stream().map(pathId -> flow.getPath(pathId).orElse(flowPathRepository.findById(pathId).orElse(null))).filter(Objects::nonNull).flatMap(path -> path.getSegments().stream()).forEach(segment -> {
                IslEndpoints isl = new IslEndpoints(segment.getSrcSwitchId().toString(), segment.getSrcPort(), segment.getDestSwitchId().toString(), segment.getDestPort());
                result.put(isl, result.getOrDefault(isl, 0L) + segment.getBandwidth());
            });
        }
        return result;
    });
    RetryPolicy<GetPathsResult> pathAllocationRetryPolicy = new RetryPolicy<GetPathsResult>().handle(RecoverableException.class).handle(ResourceAllocationException.class).handle(UnroutableFlowException.class).handle(PersistenceException.class).onRetry(e -> log.warn("Failure in path allocation. Retrying #{}...", e.getAttemptCount(), e.getLastFailure())).onRetriesExceeded(e -> log.warn("Failure in path allocation. No more retries", e.getFailure())).withMaxRetries(pathAllocationRetriesLimit);
    if (pathAllocationRetryDelay > 0) {
        pathAllocationRetryPolicy.withDelay(Duration.ofMillis(pathAllocationRetryDelay));
    }
    try {
        return Failsafe.with(pathAllocationRetryPolicy).get(() -> {
            GetPathsResult potentialPath;
            if (forceToIgnoreBandwidth) {
                boolean originalIgnoreBandwidth = flow.isIgnoreBandwidth();
                flow.setIgnoreBandwidth(true);
                potentialPath = pathComputer.getPath(flow);
                flow.setIgnoreBandwidth(originalIgnoreBandwidth);
            } else {
                potentialPath = pathComputer.getPath(flow, pathsToReuseBandwidth);
            }
            boolean newPathFound = isNotSamePath(potentialPath, oldPaths);
            if (allowOldPaths || newPathFound) {
                if (!newPathFound) {
                    log.debug("Found the same path for flow {}. Proceed with recreating it", flow.getFlowId());
                }
                if (whetherCreatePathSegments.test(potentialPath)) {
                    boolean ignoreBandwidth = forceToIgnoreBandwidth || flow.isIgnoreBandwidth();
                    List<PathSegment> forwardSegments = flowPathBuilder.buildPathSegments(newForwardPathId, potentialPath.getForward(), flow.getBandwidth(), ignoreBandwidth, sharedBandwidthGroupId);
                    List<PathSegment> reverseSegments = flowPathBuilder.buildPathSegments(newReversePathId, potentialPath.getReverse(), flow.getBandwidth(), ignoreBandwidth, sharedBandwidthGroupId);
                    transactionManager.doInTransaction(() -> {
                        createPathSegments(forwardSegments, reuseBandwidthPerIsl);
                        createPathSegments(reverseSegments, reuseBandwidthPerIsl);
                    });
                }
                return potentialPath;
            }
            return null;
        });
    } catch (FailsafeException ex) {
        throw ex.getCause();
    }
}

Example 22 with UnroutableFlowException

use of org.openkilda.pce.exception.UnroutableFlowException in project open-kilda by telstra.

the class PathsService method getPaths.

/**
 * Get paths.
 */
public List<PathsInfoData> getPaths(SwitchId srcSwitchId, SwitchId dstSwitchId, FlowEncapsulationType requestEncapsulationType, PathComputationStrategy requestPathComputationStrategy, Duration maxLatency, Duration maxLatencyTier2) throws RecoverableException, SwitchNotFoundException, UnroutableFlowException {
    if (Objects.equals(srcSwitchId, dstSwitchId)) {
        throw new IllegalArgumentException(String.format("Source and destination switch IDs are equal: '%s'", srcSwitchId));
    }
    if (!switchRepository.exists(srcSwitchId)) {
        throw new SwitchNotFoundException(srcSwitchId);
    }
    if (!switchRepository.exists(dstSwitchId)) {
        throw new SwitchNotFoundException(dstSwitchId);
    }
    KildaConfiguration kildaConfiguration = kildaConfigurationRepository.getOrDefault();
    FlowEncapsulationType flowEncapsulationType = Optional.ofNullable(requestEncapsulationType).orElse(kildaConfiguration.getFlowEncapsulationType());
    SwitchProperties srcProperties = switchPropertiesRepository.findBySwitchId(srcSwitchId).orElseThrow(() -> new SwitchPropertiesNotFoundException(srcSwitchId));
    if (!srcProperties.getSupportedTransitEncapsulation().contains(flowEncapsulationType)) {
        throw new IllegalArgumentException(String.format("Switch %s doesn't support %s encapslation type. Choose " + "one of the supported encapsulation types %s or update switch properties and add needed " + "encapsulation type.", srcSwitchId, flowEncapsulationType, srcProperties.getSupportedTransitEncapsulation()));
    }
    SwitchProperties dstProperties = switchPropertiesRepository.findBySwitchId(dstSwitchId).orElseThrow(() -> new SwitchPropertiesNotFoundException(dstSwitchId));
    if (!dstProperties.getSupportedTransitEncapsulation().contains(flowEncapsulationType)) {
        throw new IllegalArgumentException(String.format("Switch %s doesn't support %s encapslation type. Choose " + "one of the supported encapsulation types %s or update switch properties and add needed " + "encapsulation type.", dstSwitchId, requestEncapsulationType, dstProperties.getSupportedTransitEncapsulation()));
    }
    PathComputationStrategy pathComputationStrategy = Optional.ofNullable(requestPathComputationStrategy).orElse(kildaConfiguration.getPathComputationStrategy());
    List<Path> flowPaths = pathComputer.getNPaths(srcSwitchId, dstSwitchId, MAX_PATH_COUNT, flowEncapsulationType, pathComputationStrategy, maxLatency, maxLatencyTier2);
    return flowPaths.stream().map(PathMapper.INSTANCE::map).map(path -> PathsInfoData.builder().path(path).build()).collect(Collectors.toList());
}