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/*
 *  Copyright (c) 2017 Uber Technologies, Inc. ([email protected])
 *
 *  Licensed 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 com.uber.hoodie.common;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import org.apache.hadoop.conf.Configuration;

public class SerializableConfiguration implements Serializable {

  private transient Configuration configuration;

  public SerializableConfiguration(Configuration configuration) {
    this.configuration = configuration;
  }

  public Configuration get() {
    return configuration;
  }

  private void writeObject(ObjectOutputStream out) throws IOException {
    out.defaultWriteObject();
    configuration.write(out);
  }

  private void readObject(ObjectInputStream in) throws IOException {
    configuration = new Configuration(false);
    configuration.readFields(in);
  }

  @Override
  public String toString() {
    StringBuilder str = new StringBuilder();
    configuration.iterator().forEachRemaining(e ->
        str.append(String.format("%s => %s \n", e.getKey(), e.getValue())));
    return configuration.toString();
  }
}