Examples with QueryHandle co.cask.cdap.proto.QueryHandle used on opensource projects

Example 21 with QueryHandle

use of co.cask.cdap.proto.QueryHandle in project cdap by caskdata.

the class BaseHiveExploreService method getTables.

@Override
public QueryHandle getTables(String catalog, String schemaPattern, String tableNamePattern, List<String> tableTypes) throws ExploreException, SQLException {
    startAndWait();
    try {
        SessionHandle sessionHandle = null;
        OperationHandle operationHandle = null;
        Map<String, String> sessionConf = startSession();
        String database = getHiveDatabase(schemaPattern);
        try {
            sessionHandle = openHiveSession(sessionConf);
            operationHandle = cliService.getTables(sessionHandle, catalog, database, tableNamePattern, tableTypes);
            QueryHandle handle = saveReadOnlyOperation(operationHandle, sessionHandle, sessionConf, "", database);
            LOG.trace("Retrieving tables: catalog {}, schemaNamePattern {}, tableNamePattern {}, tableTypes {}", catalog, database, tableNamePattern, tableTypes);
            return handle;
        } catch (Throwable e) {
            closeInternal(getQueryHandle(sessionConf), new ReadOnlyOperationInfo(sessionHandle, operationHandle, sessionConf, "", database));
            throw e;
        }
    } catch (HiveSQLException e) {
        throw getSqlException(e);
    } catch (Throwable e) {
        throw new ExploreException(e);
    }
}

Example 22 with QueryHandle

use of co.cask.cdap.proto.QueryHandle in project cdap by caskdata.

the class BaseHiveExploreService method getTableTypes.

@Override
public QueryHandle getTableTypes() throws ExploreException, SQLException {
    startAndWait();
    try {
        SessionHandle sessionHandle = null;
        OperationHandle operationHandle = null;
        Map<String, String> sessionConf = startSession();
        try {
            sessionHandle = openHiveSession(sessionConf);
            operationHandle = cliService.getTableTypes(sessionHandle);
            QueryHandle handle = saveReadOnlyOperation(operationHandle, sessionHandle, sessionConf, "", "");
            LOG.trace("Retrieving table types");
            return handle;
        } catch (Throwable e) {
            closeInternal(getQueryHandle(sessionConf), new ReadOnlyOperationInfo(sessionHandle, operationHandle, sessionConf, "", ""));
            throw e;
        }
    } catch (HiveSQLException e) {
        throw getSqlException(e);
    } catch (Throwable e) {
        throw new ExploreException(e);
    }
}

Example 23 with QueryHandle

use of co.cask.cdap.proto.QueryHandle in project cdap by caskdata.

the class BaseHiveExploreService method execute.

@Override
public QueryHandle execute(NamespaceId namespace, String statement, @Nullable Map<String, String> additionalSessionConf) throws ExploreException, SQLException {
    startAndWait();
    try {
        SessionHandle sessionHandle = null;
        OperationHandle operationHandle = null;
        LOG.trace("Got statement '{}' with additional session configuration {}", statement, additionalSessionConf);
        Map<String, String> sessionConf = startSession(namespace, additionalSessionConf);
        String database = getHiveDatabase(namespace.getNamespace());
        try {
            sessionHandle = openHiveSession(sessionConf);
            // Switch database to the one being passed in.
            setCurrentDatabase(database);
            operationHandle = executeAsync(sessionHandle, statement);
            QueryHandle handle = saveReadWriteOperation(operationHandle, sessionHandle, sessionConf, statement, database);
            LOG.trace("Executing statement: {} with handle {}", statement, handle);
            return handle;
        } catch (Throwable e) {
            closeInternal(getQueryHandle(sessionConf), new ReadWriteOperationInfo(sessionHandle, operationHandle, sessionConf, "", database));
            throw e;
        }
    } catch (HiveSQLException e) {
        throw getSqlException(e);
    } catch (Throwable e) {
        throw new ExploreException(e);
    }
}

Example 24 with QueryHandle

use of co.cask.cdap.proto.QueryHandle in project cdap by caskdata.

the class BaseHiveExploreService method getColumns.

@Override
public QueryHandle getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws ExploreException, SQLException {
    startAndWait();
    try {
        SessionHandle sessionHandle = null;
        OperationHandle operationHandle = null;
        Map<String, String> sessionConf = startSession();
        String database = getHiveDatabase(schemaPattern);
        try {
            sessionHandle = openHiveSession(sessionConf);
            operationHandle = cliService.getColumns(sessionHandle, catalog, database, tableNamePattern, columnNamePattern);
            QueryHandle handle = saveReadOnlyOperation(operationHandle, sessionHandle, sessionConf, "", database);
            LOG.trace("Retrieving columns: catalog {}, schemaPattern {}, tableNamePattern {}, columnNamePattern {}", catalog, database, tableNamePattern, columnNamePattern);
            return handle;
        } catch (Throwable e) {
            closeInternal(getQueryHandle(sessionConf), new ReadOnlyOperationInfo(sessionHandle, operationHandle, sessionConf, "", database));
            throw e;
        }
    } catch (HiveSQLException e) {
        throw getSqlException(e);
    } catch (Throwable e) {
        throw new ExploreException(e);
    }
}

Example 25 with QueryHandle

use of co.cask.cdap.proto.QueryHandle in project cdap by caskdata.

the class ExploreExecutorHttpHandler method updateDataset.

/**
   * Enable ad-hoc exploration of a dataset instance.
   */
@POST
@Path("datasets/{dataset}/update")
@AuditPolicy(AuditDetail.REQUEST_BODY)
public void updateDataset(HttpRequest request, HttpResponder responder, @PathParam("namespace-id") String namespace, @PathParam("dataset") String datasetName) throws BadRequestException {
    final DatasetId datasetId = new DatasetId(namespace, datasetName);
    try {
        UpdateExploreParameters params = readUpdateParameters(request);
        final DatasetSpecification oldSpec = params.getOldSpec();
        final DatasetSpecification datasetSpec = params.getNewSpec();
        QueryHandle handle;
        if (oldSpec.equals(datasetSpec)) {
            handle = QueryHandle.NO_OP;
        } else {
            handle = impersonator.doAs(datasetId, new Callable<QueryHandle>() {

                @Override
                public QueryHandle call() throws Exception {
                    return exploreTableManager.updateDataset(datasetId, datasetSpec, oldSpec);
                }
            });
        }
        JsonObject json = new JsonObject();
        json.addProperty("handle", handle.getHandle());
        responder.sendJson(HttpResponseStatus.OK, json);
    } catch (IllegalArgumentException e) {
        responder.sendString(HttpResponseStatus.BAD_REQUEST, e.getMessage());
    } catch (ExploreException e) {
        responder.sendString(HttpResponseStatus.INTERNAL_SERVER_ERROR, "Error updating explore on dataset " + datasetId);
    } catch (SQLException e) {
        responder.sendString(HttpResponseStatus.BAD_REQUEST, "SQL exception while trying to update explore on dataset " + datasetId);
    } catch (UnsupportedTypeException e) {
        responder.sendString(HttpResponseStatus.BAD_REQUEST, "Schema for dataset " + datasetId + " is not supported for exploration: " + e.getMessage());
    } catch (Throwable e) {
        LOG.error("Got exception:", e);
        responder.sendString(HttpResponseStatus.INTERNAL_SERVER_ERROR, e.getMessage());
    }
}