/*
 * 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.core.client.admin;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import com.google.common.base.Preconditions;

/**
 * 
 * @since 1.7.0
 */

public class CompactionStrategyConfig {
  private String className;
  private Map<String,String> options = Collections.emptyMap();

  /**
   * 
   * @param className
   *          The name of a class that implements org.apache.accumulo.tserver.compaction.CompactionStrategy. This class must be exist on tservers.
   */

  public CompactionStrategyConfig(String className) {
    Preconditions.checkNotNull(className);
    this.className = className;
  }

  /**
   * @return the class name passed to the constructor.
   */
  public String getClassName() {
    return className;
  }

  /**
   * @param opts
   *          The options that will be passed to the init() method of the compaction strategy when its instantiated on a tserver. This method will copy the map.
   *          The default is an empty map.
   * @return this
   */

  public CompactionStrategyConfig setOptions(Map<String,String> opts) {
    Preconditions.checkNotNull(opts);
    this.options = new HashMap<>(opts);
    return this;
  }

  /**
   * 
   * @return The previously set options. Returns an unmodifiable map. The default is an empty map.
   */

  public Map<String,String> getOptions() {
    return Collections.unmodifiableMap(options);
  }
}
