001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.hbtop.mode;
019
020import java.util.Arrays;
021import java.util.Collections;
022import java.util.List;
023import java.util.stream.Collectors;
024import java.util.stream.Stream;
025import org.apache.hadoop.hbase.ClusterMetrics;
026import org.apache.hadoop.hbase.hbtop.Record;
027import org.apache.hadoop.hbase.hbtop.RecordFilter;
028import org.apache.hadoop.hbase.hbtop.field.Field;
029import org.apache.hadoop.hbase.hbtop.field.FieldInfo;
030import org.apache.yetus.audience.InterfaceAudience;
031
032
033/**
034 * Implementation for {@link ModeStrategy} for Namespace Mode.
035 */
036@InterfaceAudience.Private
037public final class NamespaceModeStrategy implements ModeStrategy {
038
039  private final List<FieldInfo> fieldInfos = Arrays.asList(
040    new FieldInfo(Field.NAMESPACE, 0, true),
041    new FieldInfo(Field.REGION_COUNT, 7, true),
042    new FieldInfo(Field.REQUEST_COUNT_PER_SECOND, 10, true),
043    new FieldInfo(Field.READ_REQUEST_COUNT_PER_SECOND, 10, true),
044    new FieldInfo(Field.FILTERED_READ_REQUEST_COUNT_PER_SECOND, 8, true),
045    new FieldInfo(Field.WRITE_REQUEST_COUNT_PER_SECOND, 10, true),
046    new FieldInfo(Field.STORE_FILE_SIZE, 13, true),
047    new FieldInfo(Field.UNCOMPRESSED_STORE_FILE_SIZE, 15, false),
048    new FieldInfo(Field.NUM_STORE_FILES, 7, true),
049    new FieldInfo(Field.MEM_STORE_SIZE, 11, true)
050  );
051
052  private final RegionModeStrategy regionModeStrategy = new RegionModeStrategy();
053
054  NamespaceModeStrategy(){
055  }
056
057  @Override
058  public List<FieldInfo> getFieldInfos() {
059    return fieldInfos;
060  }
061
062  @Override
063  public Field getDefaultSortField() {
064    return Field.REQUEST_COUNT_PER_SECOND;
065  }
066
067  @Override
068  public List<Record> getRecords(ClusterMetrics clusterMetrics) {
069    // Get records from RegionModeStrategy and add REGION_COUNT field
070    List<Record> records = regionModeStrategy.getRecords(clusterMetrics).stream()
071      .map(record ->
072        Record.ofEntries(fieldInfos.stream()
073          .filter(fi -> record.containsKey(fi.getField()))
074          .map(fi -> Record.entry(fi.getField(), record.get(fi.getField())))))
075      .map(record -> Record.builder().putAll(record).put(Field.REGION_COUNT, 1).build())
076      .collect(Collectors.toList());
077
078    // Aggregation by NAMESPACE field
079    return records.stream()
080      .collect(Collectors.groupingBy(r -> r.get(Field.NAMESPACE).asString()))
081      .entrySet().stream()
082      .flatMap(
083        e -> e.getValue().stream()
084          .reduce(Record::combine)
085          .map(Stream::of)
086          .orElse(Stream.empty()))
087      .collect(Collectors.toList());
088  }
089
090  @Override
091  public DrillDownInfo drillDown(Record selectedRecord) {
092    List<RecordFilter> initialFilters =
093      Collections.singletonList(RecordFilter.newBuilder(Field.NAMESPACE)
094        .doubleEquals(selectedRecord.get(Field.NAMESPACE)));
095    return new DrillDownInfo(Mode.TABLE, initialFilters);
096  }
097}