Examples with ClientQuery org.bboxdb.network.server.ClientQuery used on opensource projects

Example 1 with ClientQuery

use of org.bboxdb.network.server.ClientQuery in project bboxdb by jnidzwetzki.

the class HandleContinuousBoundingBoxQuery method handleQuery.

@Override
public /**
 * Handle a bounding box query
 */
void handleQuery(final ByteBuffer encodedPackage, final short packageSequence, final ClientConnectionHandler clientConnectionHandler) throws IOException, PackageEncodeException {
    try {
        if (clientConnectionHandler.getActiveQueries().containsKey(packageSequence)) {
            logger.error("Query sequence {} is already known, please close old query first", packageSequence);
            return;
        }
        final QueryBoundingBoxContinuousRequest queryRequest = QueryBoundingBoxContinuousRequest.decodeTuple(encodedPackage);
        final TupleStoreName requestTable = queryRequest.getTable();
        if (!QueryHelper.handleNonExstingTable(requestTable, packageSequence, clientConnectionHandler)) {
            return;
        }
        final BoundingBox boundingBox = queryRequest.getBoundingBox();
        final ClientQuery clientQuery = new ContinuousBoundingBoxClientQuery(boundingBox, clientConnectionHandler, packageSequence, requestTable);
        clientConnectionHandler.getActiveQueries().put(packageSequence, clientQuery);
        clientConnectionHandler.sendNextResultsForQuery(packageSequence, packageSequence);
    } catch (PackageEncodeException e) {
        logger.warn("Got exception while decoding package", e);
        clientConnectionHandler.writeResultPackage(new ErrorResponse(packageSequence, ErrorMessages.ERROR_EXCEPTION));
    }
}

Example 2 with ClientQuery

use of org.bboxdb.network.server.ClientQuery in project bboxdb by jnidzwetzki.

the class HandleKeyQuery method handleQuery.

@Override
public /**
 * Handle a key query
 */
void handleQuery(final ByteBuffer encodedPackage, final short packageSequence, final ClientConnectionHandler clientConnectionHandler) throws IOException, PackageEncodeException {
    final Runnable queryRunable = new ExceptionSafeRunnable() {

        @Override
        public void runThread() throws Exception {
            try {
                if (clientConnectionHandler.getActiveQueries().containsKey(packageSequence)) {
                    logger.error("Query sequence {} is allready known, please close old query first", packageSequence);
                    return;
                }
                final QueryKeyRequest queryKeyRequest = QueryKeyRequest.decodeTuple(encodedPackage);
                final TupleStoreName requestTable = queryKeyRequest.getTable();
                if (!QueryHelper.handleNonExstingTable(requestTable, packageSequence, clientConnectionHandler)) {
                    return;
                }
                final String key = queryKeyRequest.getKey();
                final ClientQuery clientQuery = new KeyClientQuery(key, queryKeyRequest.isPagingEnabled(), queryKeyRequest.getTuplesPerPage(), clientConnectionHandler, packageSequence, requestTable);
                clientConnectionHandler.getActiveQueries().put(packageSequence, clientQuery);
                clientConnectionHandler.sendNextResultsForQuery(packageSequence, packageSequence);
            } catch (PackageEncodeException e) {
                logger.warn("Got exception while decoding package", e);
                clientConnectionHandler.writeResultPackage(new ErrorResponse(packageSequence, ErrorMessages.ERROR_EXCEPTION));
            }
        }

        @Override
        protected void afterExceptionHook() {
            final ErrorResponse responsePackage = new ErrorResponse(packageSequence, ErrorMessages.ERROR_EXCEPTION);
            clientConnectionHandler.writeResultPackageNE(responsePackage);
        }
    };
    // Submit the runnable to our pool
    if (clientConnectionHandler.getThreadPool().isShutdown()) {
        logger.warn("Thread pool is shutting down, don't execute query: {}", packageSequence);
        final ErrorResponse responsePackage = new ErrorResponse(packageSequence, ErrorMessages.ERROR_QUERY_SHUTDOWN);
        clientConnectionHandler.writeResultPackage(responsePackage);
    } else {
        clientConnectionHandler.getThreadPool().submit(queryRunable);
    }
}

Example 3 with ClientQuery

use of org.bboxdb.network.server.ClientQuery in project bboxdb by jnidzwetzki.

the class CancelQueryHandler method handleRequest.

@Override
public /**
 * Cancel the given query
 */
boolean handleRequest(final ByteBuffer encodedPackage, final short packageSequence, final ClientConnectionHandler clientConnectionHandler) throws IOException, PackageEncodeException {
    try {
        final CancelQueryRequest nextPagePackage = CancelQueryRequest.decodeTuple(encodedPackage);
        final short queryToCancel = nextPagePackage.getQuerySequence();
        logger.debug("Cancel query {} requested", queryToCancel);
        final Map<Short, ClientQuery> activeQueries = clientConnectionHandler.getActiveQueries();
        if (!activeQueries.containsKey(queryToCancel)) {
            logger.error("Unable to cancel query {} - not found", queryToCancel);
            clientConnectionHandler.writeResultPackage(new ErrorResponse(packageSequence, ErrorMessages.ERROR_QUERY_NOT_FOUND));
        } else {
            final ClientQuery clientQuery = activeQueries.remove(queryToCancel);
            clientQuery.close();
            clientConnectionHandler.writeResultPackage(new SuccessResponse(packageSequence));
            logger.info("Sending success for canceling query {} (request package {})", queryToCancel, packageSequence);
        }
    } catch (PackageEncodeException e) {
        logger.warn("Error getting next page for a query", e);
        final ErrorResponse responsePackage = new ErrorResponse(packageSequence, ErrorMessages.ERROR_EXCEPTION);
        clientConnectionHandler.writeResultPackage(responsePackage);
    }
    return true;
}