/*
 * 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.geode.modules.session.internal.filter.attributes;

import org.apache.geode.DataSerializable;
import org.apache.geode.Instantiator;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * This class implements immediately transmitted attributes. All attributes are transmitted for
 * every attribute update. This is bound to be a performance hit in some cases but ensures much
 * higher data availability.
 */
public class ImmediateSessionAttributes extends AbstractSessionAttributes {

  private static final Logger LOG =
      LoggerFactory.getLogger(ImmediateSessionAttributes.class.getName());

  /**
   * Register ourselves for de-serialization
   */
  static {
    Instantiator.register(new Instantiator(ImmediateSessionAttributes.class, 347) {
      @Override
      public DataSerializable newInstance() {
        return new ImmediateSessionAttributes();
      }
    });
  }

  /**
   * Default constructor
   */
  public ImmediateSessionAttributes() {}

  @Override
  public Object putAttribute(String attr, Object value) {
    Object obj = attributes.put(attr, value);
    flush();
    return obj;
  }

  @Override
  public Object removeAttribute(String attr) {
    Object obj = attributes.remove(attr);
    flush();
    return obj;
  }
}