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

Example 26 with QueryHandle

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

the class BaseHiveExploreService method getCatalogs.

@Override
public QueryHandle getCatalogs() throws ExploreException, SQLException {
    startAndWait();
    try {
        SessionHandle sessionHandle = null;
        OperationHandle operationHandle = null;
        Map<String, String> sessionConf = startSession();
        try {
            sessionHandle = openHiveSession(sessionConf);
            operationHandle = cliService.getCatalogs(sessionHandle);
            QueryHandle handle = saveReadOnlyOperation(operationHandle, sessionHandle, sessionConf, "", "");
            LOG.trace("Retrieving catalogs");
            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 27 with QueryHandle

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

the class BaseHiveExploreService method saveReadWriteOperation.

/**
   * Saves information associated with a Hive operation that writes to a Dataset.
   * @param operationHandle {@link OperationHandle} of the Hive operation running.
   * @param sessionHandle {@link SessionHandle} for the Hive operation running.
   * @param sessionConf configuration for the session running the Hive operation.
   * @param statement SQL statement executed with the call.
   * @return {@link QueryHandle} that represents the Hive operation being run.
   */
private QueryHandle saveReadWriteOperation(OperationHandle operationHandle, SessionHandle sessionHandle, Map<String, String> sessionConf, String statement, String hiveDatabase) {
    QueryHandle handle = QueryHandle.fromId(sessionConf.get(Constants.Explore.QUERY_ID));
    activeHandleCache.put(handle, new ReadWriteOperationInfo(sessionHandle, operationHandle, sessionConf, statement, hiveDatabase));
    return handle;
}

Example 28 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[] statements) throws ExploreException, SQLException {
    Preconditions.checkArgument(statements.length > 0, "There must be at least one statement");
    startAndWait();
    try {
        SessionHandle sessionHandle = null;
        OperationHandle operationHandle = null;
        Map<String, String> sessionConf = startSession(namespace);
        String database = getHiveDatabase(namespace.getNamespace());
        try {
            sessionHandle = openHiveSession(sessionConf);
            // Switch database to the one being passed in.
            setCurrentDatabase(database);
            // synchronously execute all but the last statement
            for (int i = 0; i < statements.length - 1; i++) {
                String statement = statements[i];
                LOG.trace("Executing statement synchronously: {}", statement);
                operationHandle = executeSync(sessionHandle, statement);
                QueryStatus status = doFetchStatus(operationHandle);
                if (QueryStatus.OpStatus.ERROR == status.getStatus()) {
                    throw new HiveSQLException(status.getErrorMessage(), status.getSqlState());
                }
                if (QueryStatus.OpStatus.FINISHED != status.getStatus()) {
                    throw new ExploreException("Expected operation status FINISHED for statement '{}' but received " + status.getStatus());
                }
            }
            String statement = statements[statements.length - 1];
            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 29 with QueryHandle

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

the class NamespacedExploreQueryExecutorHttpHandler method query.

@POST
@Path("data/explore/queries")
@AuditPolicy(AuditDetail.REQUEST_BODY)
public void query(HttpRequest request, HttpResponder responder, @PathParam("namespace-id") final String namespaceId) throws Exception {
    try {
        Map<String, String> args = decodeArguments(request);
        final String query = args.get("query");
        final Map<String, String> additionalSessionConf = new HashMap<>(args);
        additionalSessionConf.remove("query");
        LOG.trace("Received query: {}", query);
        QueryHandle queryHandle = impersonator.doAs(new NamespaceId(namespaceId), new Callable<QueryHandle>() {

            @Override
            public QueryHandle call() throws Exception {
                return exploreService.execute(new NamespaceId(namespaceId), query, additionalSessionConf);
            }
        }, ImpersonatedOpType.EXPLORE);
        responder.sendJson(HttpResponseStatus.OK, queryHandle);
    } catch (IllegalArgumentException e) {
        LOG.debug("Got exception:", e);
        responder.sendString(HttpResponseStatus.BAD_REQUEST, e.getMessage());
    } catch (SQLException e) {
        LOG.debug("Got exception:", e);
        responder.sendString(HttpResponseStatus.BAD_REQUEST, String.format("[SQLState %s] %s", e.getSQLState(), e.getMessage()));
    }
}

Example 30 with QueryHandle

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

the class ExploreExecutorHttpHandler method disableStream.

@POST
@Path("streams/{stream}/tables/{table}/disable")
public void disableStream(HttpRequest request, HttpResponder responder, @PathParam("namespace-id") String namespace, @PathParam("stream") String streamName, @PathParam("table") final String tableName) {
    final StreamId streamId = new StreamId(namespace, streamName);
    try {
        // throws io exception if there is no stream
        streamAdmin.getConfig(streamId);
    } catch (IOException e) {
        LOG.debug("Could not find stream {} to disable explore on.", streamName, e);
        responder.sendString(HttpResponseStatus.NOT_FOUND, "Could not find stream " + streamName);
        return;
    }
    try {
        QueryHandle handle = impersonator.doAs(new NamespaceId(namespace), new Callable<QueryHandle>() {

            @Override
            public QueryHandle call() throws Exception {
                return exploreTableManager.disableStream(tableName, streamId);
            }
        });
        JsonObject json = new JsonObject();
        json.addProperty("handle", handle.getHandle());
        responder.sendJson(HttpResponseStatus.OK, json);
    } catch (Throwable t) {
        LOG.error("Got exception disabling exploration for stream {}", streamId, t);
        responder.sendString(HttpResponseStatus.INTERNAL_SERVER_ERROR, t.getMessage());
    }
}