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/*
 * Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
 *
 * 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. See accompanying
 * LICENSE file.
 */
package com.gemstone.gemfire.internal.statistics;

import java.util.Collections;
import java.util.Iterator;
import java.util.Map;

import com.gemstone.gemfire.StatisticDescriptor;
import com.gemstone.gemfire.Statistics;
import com.gemstone.gemfire.StatisticsType;

/**
 * @author Kirk Lund
 * @since 7.0
 */
public class MapBasedStatisticsNotification implements StatisticsNotification {

  private final long millisTimeStamp;
  private final Type type;
  private final Map stats;
  
  protected MapBasedStatisticsNotification(long millisTimeStamp,
                                           Type type,
                                           Map stats) {
    this.millisTimeStamp = millisTimeStamp;
    this.type = type;
    this.stats = Collections.unmodifiableMap(stats);
  }

  public long getTimeStamp() {
    return this.millisTimeStamp;
  }

  public Type getType() {
    return this.type;
  }

  public Iterator iterator() {
    return this.stats.keySet().iterator();
  }

  public Iterator iterator(StatisticDescriptor statDesc) {
    throw new UnsupportedOperationException("Not yet implemented");
  }

  public Iterator iterator(Statistics statistics) {
    throw new UnsupportedOperationException("Not yet implemented");
  }

  public Iterator iterator(StatisticsType statisticsType) {
    throw new UnsupportedOperationException("Not yet implemented");
  }

  public Number getValue(StatisticId statId) throws StatisticNotFoundException {
    Number value = this.stats.get(statId);
    if (value == null) {
      throw new StatisticNotFoundException(statId.getStatisticDescriptor().getName()
          + " not found in notification");
    }
    return value;
  }

  @Override
  public String toString() {
    final StringBuilder sb = new StringBuilder(getClass().getName());
    sb.append("@").append(System.identityHashCode(this)).append("{");
    sb.append("millisTimeStamp=").append(this.millisTimeStamp);
    sb.append(", type=").append(this.type);
    sb.append(", stats=").append(this.stats);
    sb.append("}");
    return sb.toString();
  }
}