Examples with OutdatedDistributionRegion org.bboxdb.distribution.OutdatedDistributionRegion used on opensource projects

Example 1 with OutdatedDistributionRegion

use of org.bboxdb.distribution.OutdatedDistributionRegion in project bboxdb by jnidzwetzki.

the class DistributionRegionHelper method getOutdatedRegions.

/**
 * Find the outdated regions for the distributed instance
 * @param region
 * @param distributedInstance
 * @return
 * @throws BBoxDBException
 */
public static List<OutdatedDistributionRegion> getOutdatedRegions(final DistributionRegion region, final BBoxDBInstance distributedInstance) throws BBoxDBException {
    final List<OutdatedDistributionRegion> result = new ArrayList<>();
    if (region == null) {
        return result;
    }
    final List<DistributionRegion> regions = region.getThisAndChildRegions().stream().filter(r -> r.getSystems().contains(distributedInstance)).collect(Collectors.toList());
    for (final DistributionRegion regionToInspect : regions) {
        try {
            final OutdatedDistributionRegion regionResult = processRegion(distributedInstance, ZookeeperClientFactory.getZookeeperClient(), regionToInspect);
            if (regionResult != null) {
                result.add(regionResult);
            }
        } catch (ZookeeperException e) {
            throw new BBoxDBException(e);
        }
    }
    return result;
}

Example 2 with OutdatedDistributionRegion

use of org.bboxdb.distribution.OutdatedDistributionRegion in project bboxdb by jnidzwetzki.

the class DistributionRegionHelper method processRegion.

/**
 * Test if there is an outdated region
 *
 * @param distributedInstance
 * @param result
 * @param distributionGroupZookeeperAdapter
 * @param regionToInspect
 * @return
 * @throws ZookeeperException
 * @throws BBoxDBException
 */
private static OutdatedDistributionRegion processRegion(final BBoxDBInstance distributedInstance, final ZookeeperClient zookeeperClient, final DistributionRegion regionToInspect) throws ZookeeperException, BBoxDBException {
    final Map<BBoxDBInstance, Long> versions = new HashMap<>();
    for (final BBoxDBInstance instance : regionToInspect.getSystems()) {
        final long version = zookeeperClient.getDistributionRegionAdapter().getCheckpointForDistributionRegion(regionToInspect, instance);
        versions.put(instance, version);
    }
    if (!versions.containsKey(distributedInstance)) {
        throw new BBoxDBException("Unable to find local instance for region: " + distributedInstance + " / " + regionToInspect);
    }
    final Optional<Entry<BBoxDBInstance, Long>> newestInstanceOptional = versions.entrySet().stream().reduce((a, b) -> a.getValue() > b.getValue() ? a : b);
    if (!newestInstanceOptional.isPresent()) {
        return null;
    }
    final long localVersion = versions.get(distributedInstance);
    final Entry<BBoxDBInstance, Long> newestInstance = newestInstanceOptional.get();
    if (!newestInstance.getKey().equals(distributedInstance)) {
        return new OutdatedDistributionRegion(regionToInspect, newestInstance.getKey(), localVersion);
    }
    return null;
}