content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.wire;
  
  import alluxio.conf.Source;
  import alluxio.grpc.ConfigProperty;
  
  import com.google.common.base.Preconditions;
  
  import javax.annotation.Nullable;
  import javax.annotation.concurrent.ThreadSafe;
  
  /**
   * Wire representation of a configuration property.
   */
  @ThreadSafe
  public final class Property {
    /** Property key name. */
    private final String mName;
    /** Property value. */
    private final Object mValue;
    /**
     * Property source, should be one of the values of {@link alluxio.conf.Source}.
     */
    private final String mSource;
  
    /**
     * Creates a new property.
     *
     * @param name property name
     * @param value property value
     * @param source property source
     */
    public Property(String name, @Nullable Object value, Source source) {
      Preconditions.checkNotNull(name, "name");
      Preconditions.checkNotNull(source, "source");
      mName = name;
      mValue = value;
      mSource = source.toString();
    }
  
    private Property(ConfigProperty property) {
      mName = property.getName();
      mValue = property.getValue();
      mSource = property.getSource();
    }
  
    /**
     * @param property the grpc representation of a property
     * @return the property parsed from the grpc representation
     */
    public static Property fromProto(ConfigProperty property) {
      return new Property(property);
    }
  
    /**
     * @return the grpc representation
     */
    public ConfigProperty toProto() {
      ConfigProperty.Builder builder = ConfigProperty.newBuilder();
      builder.setName(mName);
      if (mValue != null) {
        builder.setValue(String.valueOf(mValue));
      }
      builder.setSource(mSource);
      return builder.build();
    }
  
    /**
     * @return the property key name
     */
    public String getName() {
      return mName;
    }
  
    /**
     * @return the property value
     */
    public Object getValue() {
      return mValue;
    }
  
    /**
     * @return the property source
     */
    public String getSource() {
      return mSource;
    }
  }
  