Examples with ExploreException co.cask.cdap.explore.service.ExploreException used on opensource projects

Example 26 with ExploreException

use of co.cask.cdap.explore.service.ExploreException in project cdap by caskdata.

the class ExploreHttpClient method getTables.

@Override
public QueryHandle getTables(@Nullable String catalog, @Nullable String schemaPattern, String tableNamePattern, @Nullable List<String> tableTypes) throws ExploreException, SQLException {
    String body = GSON.toJson(new TablesArgs(catalog, schemaPattern, tableNamePattern, tableTypes));
    String resource = String.format("namespaces/%s/data/explore/jdbc/tables", schemaPattern);
    HttpResponse response = doPost(resource, body, null);
    if (response.getResponseCode() == HttpURLConnection.HTTP_OK) {
        return QueryHandle.fromId(parseResponseAsMap(response, "handle"));
    }
    throw new ExploreException("Cannot get the tables. Reason: " + response);
}

Example 27 with ExploreException

use of co.cask.cdap.explore.service.ExploreException in project cdap by caskdata.

the class ExploreHttpClient method doEnableExploreDataset.

protected QueryHandle doEnableExploreDataset(DatasetId datasetInstance, DatasetSpecification spec, boolean truncating) throws ExploreException {
    String body = spec == null ? null : GSON.toJson(new EnableExploreParameters(spec, truncating));
    String endpoint = spec == null ? "enable" : "enable-internal";
    HttpResponse response = doPost(String.format("namespaces/%s/data/explore/datasets/%s/%s", datasetInstance.getNamespace(), datasetInstance.getEntityName(), endpoint), body, null);
    if (response.getResponseCode() == HttpURLConnection.HTTP_OK) {
        return QueryHandle.fromId(parseResponseAsMap(response, "handle"));
    }
    throw new ExploreException(String.format("Cannot enable explore on dataset %s. Reason: %s", datasetInstance.toString(), response));
}

Example 28 with ExploreException

use of co.cask.cdap.explore.service.ExploreException in project cdap by caskdata.

the class BaseHiveExploreService method createNamespace.

public QueryHandle createNamespace(NamespaceMeta namespaceMeta) throws ExploreException, SQLException {
    startAndWait();
    try {
        // This check prevents the extra warn log.
        if (NamespaceId.DEFAULT.equals(namespaceMeta.getNamespaceId())) {
            return QueryHandle.NO_OP;
        }
        Map<String, String> sessionConf = startSession();
        SessionHandle sessionHandle = null;
        OperationHandle operationHandle = null;
        try {
            sessionHandle = openHiveSession(sessionConf);
            QueryHandle handle;
            if (Strings.isNullOrEmpty(namespaceMeta.getConfig().getHiveDatabase())) {
                // if no custom hive database was provided get the hive database according to cdap format and create it
                // if one does not exists since cdap is responsible for managing the lifecycle of such databases
                String database = createHiveDBName(namespaceMeta.getName());
                // "IF NOT EXISTS" so that this operation is idempotent.
                String statement = String.format("CREATE DATABASE IF NOT EXISTS %s", database);
                operationHandle = executeAsync(sessionHandle, statement);
                handle = saveReadOnlyOperation(operationHandle, sessionHandle, sessionConf, statement, database);
                LOG.info("Creating database {} with handle {}", database, handle);
            } else {
                // a custom database name was provided so check its existence
                // there is no way to check if a hive database exists or not other than trying to use it and see whether
                // it fails or not. So, run a USE databaseName command and see if it throws exception
                // Other way can be to list all database and check if the database exists or not but we are doing USE to
                // make sure that user can acutally use the database once we have impersonation.
                String statement = String.format("USE %s", namespaceMeta.getConfig().getHiveDatabase());
                // if the database does not exists the below line will throw exception from hive
                try {
                    operationHandle = executeAsync(sessionHandle, statement);
                } catch (HiveSQLException e) {
                    // then we will get an exception from Hive with error code 10072 which represent database was not found
                    if (e.toTStatus().getErrorCode() == ErrorMsg.DATABASE_NOT_EXISTS.getErrorCode()) {
                        //TODO: Add username here
                        throw new ExploreException(String.format("A custom Hive Database %s was provided for namespace %s " + "which does not exists. Please create the database in hive " + "for the user and try creating the namespace again.", namespaceMeta.getConfig().getHiveDatabase(), namespaceMeta.getName()), e);
                    } else {
                        // some other exception was generated while checking the existense of the database
                        throw new ExploreException(String.format("Failed to check existence of given custom hive database " + "%s for namespace %s", namespaceMeta.getConfig().getHiveDatabase(), namespaceMeta.getName()), e);
                    }
                }
                // if we didn't got an exception on the line above we know that the database exists
                handle = saveReadOnlyOperation(operationHandle, sessionHandle, sessionConf, statement, namespaceMeta.getConfig().getHiveDatabase());
                LOG.debug("Custom database {} existence verified with handle {}", namespaceMeta.getConfig().getHiveDatabase(), handle);
            }
            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 29 with ExploreException

use of co.cask.cdap.explore.service.ExploreException 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 30 with ExploreException

use of co.cask.cdap.explore.service.ExploreException 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);
    }
}