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 com.alibaba.metrics.server;
  
  import com.alibaba.metrics.MetricLevel;
  import com.alibaba.metrics.bean.MetricResult;
  import com.alibaba.metrics.common.config.MetricsCollectPeriodConfig;
  import com.alibaba.metrics.reporter.bin.DataSource;
  import com.alibaba.metrics.status.LogDescriptionManager;
  import com.alibaba.metrics.utils.FIFOMap;
  
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Map.Entry;
  import java.util.Set;
  import java.util.SortedMap;
  import java.util.TreeMap;
  
  public class MetricsMemoryCache extends MetricsDataStore {
  
      private Map<MetricLevel, DataInfo> cachedMetrics = new HashMap<MetricLevel, DataInfo>();
  
      private int size = 10;
  
      private LogDescriptionManager logDescriptionManager;
  
      private MetricsCollectPeriodConfig metricsCollectPeriodConfig = new MetricsCollectPeriodConfig();
  
      private long startTime;
  
      private long endTime;
  
      public MetricsMemoryCache(int size, LogDescriptionManager logDescriptionManager) {
          this(size);
          this.logDescriptionManager = logDescriptionManager;
      }
  
      public MetricsMemoryCache(int size){
          this.size = size;
          for (MetricLevel level : MetricLevel.values()) {
              int absoluteSize = size / metricsCollectPeriodConfig.period(level) * 2 - 1;
              cachedMetrics.put(level, new DataInfo(absoluteSize));
          }
      }
  
      public void add(MetricLevel level, long timestamp, long[] dataBlock) {
  
          DataInfo cache = cachedMetrics.get(level);
          cache.add(timestamp, dataBlock);
  
          if (timestamp > endTime) {
              endTime = timestamp;
          }
  
      }
  
      public long getStartTime() {
          return startTime;
      }
  
      public long getEndTime() {
          return endTime;
      }
  
      public Map<MetricLevel, SortedMap<Long, List<MetricResult>>> getDataFromCache(
              Map<MetricLevel, SortedMap<Long, List<MetricResult>>> result, Map<MetricLevel, Set<DataSource>> dataSources,
              long startTime, long endTime, int precision) {
  
          if (dataSources == null || dataSources.size() == 0){
              return result;
          }
  
          for (Entry<MetricLevel, Set<DataSource>> entry : dataSources.entrySet()) {
  
              MetricLevel level = entry.getKey();
              Set<DataSource> dataSourceSet = entry.getValue();
  
              DataInfo info = cachedMetrics.get(level);
  
              SortedMap<Long, BasicLongArray> timeSeries = info.getDataMap().subMap(startTime, endTime);
  
              SortedMap<Long, List<MetricResult>> resultList = result.get(level);
  
              if (resultList == null) {
                  SortedMap<Long, List<MetricResult>> newMap = new TreeMap<Long, List<MetricResult>>();
                  result.put(level, newMap);
                  resultList = newMap;
              }
  
              for (Entry<Long, BasicLongArray> entry1 : timeSeries.entrySet()) {
  
                  long key = entry1.getKey();
  
                  List<MetricResult> tempResult = resultList.get(key);
  
                  tempResult = createMetricsResult(dataSourceSet, entry1.getValue().array, key, level, precision, tempResult);
  
                  resultList.put(key, tempResult);
              }
  
              result.put(level, resultList);
  
          }
  
          return result;
      }
  }
  
  class DataInfo {
  
      private FIFOMap<Long, BasicLongArray> dataMap;
  
      private int size = 0;
  
      public DataInfo(int size) {
          this.size = size;
          dataMap = new FIFOMap<Long, BasicLongArray>(size);
      }
  
      public void add(long timestamp, long[] data) {
  
  //        if (dataMap.size() == size){
  //            dataMap.remove(dataMap.firstKey());
  //        }
  
          dataMap.put(timestamp, new BasicLongArray(data));
  
      }
  
      // public long getStartTime() {
      // return startTime;
      // }
      //
      // public long getEndTime() {
      // return endTime;
      // }
  
      public FIFOMap<Long, BasicLongArray> getDataMap() {
          return dataMap;
      }
  }
  
  class BasicLongArray{
  
      long[] array;
  
      BasicLongArray(long[] array){
          this.array = array;
      }
  
  }
  
  