src/main/java/org/apache/accumulo/testing/randomwalk/concurrent/ChangeAuthorizations.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
 *
 *     http://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.randomwalk.concurrent;

import static java.nio.charset.StandardCharsets.UTF_8;

import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import java.util.Random;

import org.apache.accumulo.core.client.AccumuloClient;
import org.apache.accumulo.core.client.AccumuloSecurityException;
import org.apache.accumulo.core.security.Authorizations;
import org.apache.accumulo.testing.randomwalk.RandWalkEnv;
import org.apache.accumulo.testing.randomwalk.State;
import org.apache.accumulo.testing.randomwalk.Test;

public class ChangeAuthorizations extends Test {

  @Override
  public void visit(State state, RandWalkEnv env, Properties props) throws Exception {
    AccumuloClient client = env.getAccumuloClient();

    Random rand = (Random) state.get("rand");

    @SuppressWarnings("unchecked")
    List<String> userNames = (List<String>) state.get("users");

    String userName = userNames.get(rand.nextInt(userNames.size()));
    try {
      List<byte[]> auths = new ArrayList<>(
          client.securityOperations().getUserAuthorizations(userName).getAuthorizations());

      if (rand.nextBoolean()) {
        String authorization = String.format("a%d", rand.nextInt(5000));
        log.debug("adding authorization " + authorization);
        auths.add(authorization.getBytes(UTF_8));
      } else {
        if (auths.size() > 0) {
          log.debug("removing authorization " + new String(auths.remove(0), UTF_8));
        }
      }
      client.securityOperations().changeUserAuthorizations(userName, new Authorizations(auths));
    } catch (AccumuloSecurityException ex) {
      log.debug("Unable to change user authorizations: " + ex.getCause());
    }
  }

}