content: /*
   * 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.celeborn.common.network.util;
  
  import java.util.Map;
  import java.util.NoSuchElementException;
  
  /**
   * Provides a mechanism for constructing a {@link TransportConf} using some sort of configuration.
   */
  public abstract class ConfigProvider {
    /** Obtains the value of the given config, throws NoSuchElementException if it doesn't exist. */
    public abstract String get(String name);
  
    /** Returns all the config values in the provider. */
    public abstract Iterable<Map.Entry<String, String>> getAll();
  
    public String get(String name, String defaultValue) {
      try {
        return get(name);
      } catch (NoSuchElementException e) {
        return defaultValue;
      }
    }
  
    public int getInt(String name, int defaultValue) {
      return Integer.parseInt(get(name, Integer.toString(defaultValue)));
    }
  
    public long getLong(String name, long defaultValue) {
      return Long.parseLong(get(name, Long.toString(defaultValue)));
    }
  
    public double getDouble(String name, double defaultValue) {
      return Double.parseDouble(get(name, Double.toString(defaultValue)));
    }
  
    public boolean getBoolean(String name, boolean defaultValue) {
      return Boolean.parseBoolean(get(name, Boolean.toString(defaultValue)));
    }
  }
  