solr/core/src/test/org/apache/solr/cloud/hdfs/FakeGroupMapping.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.solr.cloud.hdfs;

import java.util.Collections;
import java.util.List;

import org.apache.hadoop.security.GroupMappingServiceProvider;

/**
 * Fake mapping for Hadoop to prevent falling back to Shell group provider
 */
public class FakeGroupMapping implements GroupMappingServiceProvider {
  @Override
  public List<String> getGroups(String user) {
    return Collections.singletonList("supergroup");
  }

  @Override
  public void cacheGroupsRefresh() {
  }

  @Override
  public void cacheGroupsAdd(List<String> groups) {
  }
}