src/main/java/org/apache/accumulo/testing/continuous/ContinuousUtil.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.accumulo.testing.continuous;

import org.apache.accumulo.core.client.AccumuloClient;
import org.apache.accumulo.core.client.Scanner;
import org.apache.accumulo.core.client.TableNotFoundException;
import org.apache.accumulo.core.security.Authorizations;

/**
 * Useful utility methods common to the Continuous test suite.
 */
final class ContinuousUtil {
  private ContinuousUtil() {}

  /**
   * Attempt to create a table scanner, or fail if the table does not exist.
   *
   * @param client A populated AccumuloClient object
   * @param table The table name to scan over
   * @param auths The authorizations to use for the scanner
   * @return a scanner for the requested table
   * @throws TableNotFoundException If the table does not exist
   */
  static Scanner createScanner(AccumuloClient client, String table, Authorizations auths)
      throws TableNotFoundException {
    if (!client.tableOperations().exists(table)) {
      throw new TableNotFoundException(null, table,
          "Consult the README and create the table before starting test processes.");
    }
    return client.createScanner(table, auths);
  }
}