Examples with BBoxDBException org.bboxdb.misc.BBoxDBException used on opensource projects

Example 56 with BBoxDBException

use of org.bboxdb.misc.BBoxDBException 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 * Test if there is an outdated region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;
}

Example 57 with BBoxDBException

use of org.bboxdb.misc.BBoxDBException in project bboxdb by jnidzwetzki.

the class AbstractSpacePartitioner method getRootNode.

@Override
public DistributionRegion getRootNode() throws BBoxDBException {
    synchronized (this) {
        if (distributionRegionSyncer == null) {
            this.distributionRegionSyncer = new DistributionRegionSyncer(spacePartitionerContext);
            spacePartitionerContext.getDistributionRegionMapper().clear();
        }
    }
    if (!active) {
        throw new BBoxDBException("Get root node on a non active space partitoner called");
    }
    return distributionRegionSyncer.getRootNode();
}

Example 58 with BBoxDBException

use of org.bboxdb.misc.BBoxDBException in project bboxdb by jnidzwetzki.

the class AbstractTreeSpacePartitoner method createRootNode.

@Override
public void createRootNode(final DistributionGroupConfiguration configuration) throws BBoxDBException {
    try {
        final String distributionGroup = spacePartitionerContext.getDistributionGroupName();
        final String rootPath = distributionGroupZookeeperAdapter.getDistributionGroupRootElementPath(distributionGroup);
        zookeeperClient.createDirectoryStructureRecursive(rootPath);
        final int nameprefix = distributionGroupZookeeperAdapter.getNextTableIdForDistributionGroup(distributionGroup);
        zookeeperClient.createPersistentNode(rootPath + "/" + ZookeeperNodeNames.NAME_NAMEPREFIX, Integer.toString(nameprefix).getBytes());
        zookeeperClient.createPersistentNode(rootPath + "/" + ZookeeperNodeNames.NAME_SYSTEMS, "".getBytes());
        final BoundingBox rootBox = getRootBox(configuration);
        distributionRegionZookeeperAdapter.setBoundingBoxForPath(rootPath, rootBox);
        zookeeperClient.createPersistentNode(rootPath + "/" + ZookeeperNodeNames.NAME_REGION_STATE, DistributionRegionState.ACTIVE.getStringValue().getBytes());
        SpacePartitionerHelper.allocateSystemsToRegion(rootPath, distributionGroup, new HashSet<>(), zookeeperClient);
        NodeMutationHelper.markNodeMutationAsComplete(zookeeperClient, rootPath);
    } catch (ZookeeperException | ResourceAllocationException | ZookeeperNotFoundException e) {
        throw new BBoxDBException(e);
    }
}

Example 59 with BBoxDBException

use of org.bboxdb.misc.BBoxDBException in project bboxdb by jnidzwetzki.

the class DynamicgridSpacePartitioner method splitRegion.

@Override
public List<DistributionRegion> splitRegion(final DistributionRegion regionToSplit, final Collection<BoundingBox> samples) throws BBoxDBException {
    try {
        final SplitpointStrategy splitpointStrategy = new SamplingBasedSplitStrategy(samples);
        final BoundingBox regionBox = regionToSplit.getConveringBox();
        final double splitPosition = splitpointStrategy.getSplitPoint(0, regionBox);
        splitNode(regionToSplit, splitPosition);
        return regionToSplit.getDirectChildren();
    } catch (Exception e) {
        throw new BBoxDBException(e);
    }
}

Example 60 with BBoxDBException

use of org.bboxdb.misc.BBoxDBException in project bboxdb by jnidzwetzki.

the class DynamicgridSpacePartitioner method splitNode.

/**
 * Split the node at the given split point
 * @param regionToSplit
 * @param splitPosition
 * @throws BBoxDBException
 * @throws ResourceAllocationException
 */
public void splitNode(final DistributionRegion regionToSplit, final double splitPosition) throws BBoxDBException, ResourceAllocationException {
    try {
        logger.debug("Write split at pos {} into zookeeper", splitPosition);
        final DistributionRegion parent = regionToSplit.getParent();
        final String sourcePath = distributionRegionZookeeperAdapter.getZookeeperPathForDistributionRegion(regionToSplit);
        final String parentPath = distributionRegionZookeeperAdapter.getZookeeperPathForDistributionRegion(parent);
        // Calculate the covering bounding boxes
        final BoundingBox parentBox = regionToSplit.getConveringBox();
        final BoundingBox leftBoundingBox = parentBox.splitAndGetLeft(splitPosition, 0, true);
        final BoundingBox rightBoundingBox = parentBox.splitAndGetRight(splitPosition, 0, false);
        final String fullname = distributionGroupName;
        // Only one system executes the split, therefore we can determine the child ids
        final int oldNumberOfhildren = parent.getDirectChildren().size();
        final long childNumber = parent.getHighestChildNumber();
        final String child1Path = distributionRegionZookeeperAdapter.createNewChild(parentPath, (int) childNumber + 1, leftBoundingBox, fullname);
        final String child2Path = distributionRegionZookeeperAdapter.createNewChild(parentPath, (int) childNumber + 2, rightBoundingBox, fullname);
        // Update state
        distributionRegionZookeeperAdapter.setStateForDistributionGroup(sourcePath, DistributionRegionState.SPLITTING);
        final Predicate<DistributionRegion> predicate = (r) -> r.getDirectChildren().size() == oldNumberOfhildren + 2;
        DistributionRegionSyncerHelper.waitForPredicate(predicate, regionToSplit, distributionRegionSyncer);
        // The first child is stored on the same systems as the parent
        SpacePartitionerHelper.copySystemsToRegion(regionToSplit.getSystems(), child1Path, zookeeperClient);
        final List<BBoxDBInstance> blacklistSystems = regionToSplit.getSystems();
        SpacePartitionerHelper.allocateSystemsToRegion(child2Path, fullname, blacklistSystems, zookeeperClient);
    } catch (ZookeeperException | ZookeeperNotFoundException e) {
        throw new BBoxDBException(e);
    }
}