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 org.apache.cassandra.tools.nodetool.stats;
  
  import java.time.Instant;
  import java.time.LocalDateTime;
  import java.time.ZoneId;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.Collections;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  import javax.management.openmbean.TabularData;
  
  import org.apache.cassandra.io.util.FileUtils;
  import org.apache.cassandra.tools.NodeProbe;
  
  public class CompactionHistoryHolder implements StatsHolder
  {
      public final NodeProbe probe;
      public List<String> indexNames;
      private final boolean humanReadable;
  
      public CompactionHistoryHolder(NodeProbe probe, boolean humanReadable)
      {
          this.probe = probe;
          this.humanReadable = humanReadable;
      }
  
      /**
       * Allows the Compaction History output to be ordered by 'compactedAt' - that is the
       * time at which compaction finished.
       */
      private static class CompactionHistoryRow implements Comparable<CompactionHistoryHolder.CompactionHistoryRow>
      {
          private final String id;
          private final String ksName;
          private final String cfName;
          private final long compactedAt;
          private final long bytesIn;
          private final long bytesOut;
          private final String rowMerged;
          private final String compactionProperties;
  
          CompactionHistoryRow(String id, String ksName, String cfName, long compactedAt, long bytesIn, long bytesOut, String rowMerged, String compactionProperties)
          {
              this.id = id;
              this.ksName = ksName;
              this.cfName = cfName;
              this.compactedAt = compactedAt;
              this.bytesIn = bytesIn;
              this.bytesOut = bytesOut;
              this.rowMerged = rowMerged;
              this.compactionProperties = compactionProperties;
          }
  
          public int compareTo(CompactionHistoryHolder.CompactionHistoryRow chr)
          {
              return Long.signum(chr.compactedAt - this.compactedAt);
          }
  
          private HashMap<String, Object> getAllAsMap(boolean humanReadable)
          {
              HashMap<String, Object> compaction = new HashMap<>();
              compaction.put("id", this.id);
              compaction.put("keyspace_name", this.ksName);
              compaction.put("columnfamily_name", this.cfName);
              Instant instant = Instant.ofEpochMilli(this.compactedAt);
              LocalDateTime ldt = LocalDateTime.ofInstant(instant, ZoneId.systemDefault());
              compaction.put("compacted_at", ldt.toString());
              compaction.put("bytes_in", FileUtils.stringifyFileSize(this.bytesIn, humanReadable));
              compaction.put("bytes_out", FileUtils.stringifyFileSize(this.bytesOut, humanReadable));
              compaction.put("rows_merged", this.rowMerged);
              compaction.put("compaction_properties", this.compactionProperties);
              return compaction;
          }
      }
  
      @Override
      public Map<String, Object> convert2Map()
      {
          HashMap<String, Object> result = new HashMap<>();
          ArrayList<Map<String, Object>> compactions = new ArrayList<>();
  
          TabularData tabularData = probe.getCompactionHistory();
          this.indexNames = tabularData.getTabularType().getIndexNames();
  
          if (tabularData.isEmpty()) return result;
  
          List<CompactionHistoryHolder.CompactionHistoryRow> chrList = new ArrayList<>();
          Set<?> values = tabularData.keySet();
          for (Object eachValue : values)
          {
              List<?> value = (List<?>) eachValue;
              CompactionHistoryHolder.CompactionHistoryRow chr = new CompactionHistoryHolder.CompactionHistoryRow(
                  (String)value.get(0),
                  (String)value.get(1),
                  (String)value.get(2),
                  (Long)value.get(3),
                  (Long)value.get(4),
                  (Long)value.get(5),
                  (String)value.get(6),
                  (String)value.get(7)
              );
              chrList.add(chr);
          }
  
          Collections.sort(chrList);
          for (CompactionHistoryHolder.CompactionHistoryRow chr : chrList)
          {
              compactions.add(chr.getAllAsMap(humanReadable));
          }
          result.put("CompactionHistory", compactions);
          return result;
      }
  }
  