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.bookkeeper.bookie.stats;
  
  import static org.apache.bookkeeper.bookie.BookKeeperServerStats.BOOKIE_ADD_ENTRY;
  import static org.apache.bookkeeper.bookie.BookKeeperServerStats.BOOKIE_READ_ENTRY;
  import static org.apache.bookkeeper.bookie.BookKeeperServerStats.BOOKIE_SCOPE;
  import static org.apache.bookkeeper.bookie.BookKeeperServerStats.CATEGORY_SERVER;
  import static org.apache.bookkeeper.bookie.BookKeeperServerStats.SKIP_LIST_FLUSH_BYTES;
  import static org.apache.bookkeeper.bookie.BookKeeperServerStats.SKIP_LIST_GET_ENTRY;
  import static org.apache.bookkeeper.bookie.BookKeeperServerStats.SKIP_LIST_PUT_ENTRY;
  import static org.apache.bookkeeper.bookie.BookKeeperServerStats.SKIP_LIST_SNAPSHOT;
  import static org.apache.bookkeeper.bookie.BookKeeperServerStats.SKIP_LIST_THROTTLING;
  import static org.apache.bookkeeper.bookie.BookKeeperServerStats.SKIP_LIST_THROTTLING_LATENCY;
  
  import lombok.Getter;
  import org.apache.bookkeeper.stats.Counter;
  import org.apache.bookkeeper.stats.OpStatsLogger;
  import org.apache.bookkeeper.stats.StatsLogger;
  import org.apache.bookkeeper.stats.annotations.StatsDoc;
  
  /**
   * A umbrella class for memtable related stats.
   */
  @StatsDoc(
      name = BOOKIE_SCOPE,
      category = CATEGORY_SERVER,
      help = "EntryMemTable related stats"
  )
  @Getter
  public class EntryMemTableStats {
  
      @StatsDoc(
          name = SKIP_LIST_SNAPSHOT,
          help = "operation stats of taking memtable snapshots"
      )
      private final OpStatsLogger snapshotStats;
      @StatsDoc(
          name = SKIP_LIST_PUT_ENTRY,
          help = "operation stats of putting entries to memtable",
          parent = BOOKIE_ADD_ENTRY
      )
      private final OpStatsLogger putEntryStats;
      @StatsDoc(
          name = SKIP_LIST_GET_ENTRY,
          help = "operation stats of getting entries from memtable",
          parent = BOOKIE_READ_ENTRY
      )
      private final OpStatsLogger getEntryStats;
      @StatsDoc(
          name = SKIP_LIST_FLUSH_BYTES,
          help = "The number of bytes flushed from memtable to entry log files"
      )
      private final Counter flushBytesCounter;
      @StatsDoc(
          name = SKIP_LIST_THROTTLING,
          help = "The number of requests throttled due to memtables are full"
      )
      private final Counter throttlingCounter;
      @StatsDoc(
          name = SKIP_LIST_THROTTLING_LATENCY,
          help = "The distribution of request throttled duration"
      )
      private final OpStatsLogger throttlingStats;
  
      public EntryMemTableStats(StatsLogger statsLogger) {
          this.snapshotStats = statsLogger.getOpStatsLogger(SKIP_LIST_SNAPSHOT);
          this.putEntryStats = statsLogger.getOpStatsLogger(SKIP_LIST_PUT_ENTRY);
          this.getEntryStats = statsLogger.getOpStatsLogger(SKIP_LIST_GET_ENTRY);
          this.flushBytesCounter = statsLogger.getCounter(SKIP_LIST_FLUSH_BYTES);
          this.throttlingCounter = statsLogger.getCounter(SKIP_LIST_THROTTLING);
          this.throttlingStats = statsLogger.getOpStatsLogger(SKIP_LIST_THROTTLING_LATENCY);
      }
  
  }
  