code: /*
   * 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.skywalking.oap.server.core.analysis.meter.function.avg;
  
  import io.vavr.collection.Stream;
  import org.apache.skywalking.oap.server.core.analysis.Layer;
  import org.apache.skywalking.oap.server.core.analysis.meter.MeterEntity;
  import org.apache.skywalking.oap.server.core.analysis.metrics.DataTable;
  import org.apache.skywalking.oap.server.core.config.NamingControl;
  import org.apache.skywalking.oap.server.core.config.group.EndpointNameGrouping;
  import org.apache.skywalking.oap.server.core.storage.type.HashMapConverter;
  import org.apache.skywalking.oap.server.core.storage.type.StorageBuilder;
  import org.junit.jupiter.api.AfterAll;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.Mockito;
  import org.mockito.Spy;
  import org.mockito.junit.jupiter.MockitoExtension;
  
  import java.util.Comparator;
  import java.util.List;
  import java.util.Map;
  
  import static java.util.Arrays.asList;
  import static org.apache.skywalking.oap.server.core.analysis.meter.function.avg.AvgLabeledFunction.COUNT;
  import static org.apache.skywalking.oap.server.core.analysis.meter.function.avg.AvgLabeledFunction.SUMMATION;
  import static org.apache.skywalking.oap.server.core.analysis.meter.function.avg.AvgLabeledFunction.VALUE;
  import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
  
  @ExtendWith(MockitoExtension.class)
  public class AvgLabeledFunctionTest {
      @Spy
      private AvgLabeledFunction function;
  
      @BeforeAll
      public static void setup() {
          MeterEntity.setNamingControl(
              new NamingControl(512, 512, 512, new EndpointNameGrouping()));
      }
  
      @AfterAll
      public static void tearDown() {
          MeterEntity.setNamingControl(null);
      }
  
      @Test
      public void testAccept() {
          function.accept(
              MeterEntity.newService("request_count", Layer.GENERAL), build(asList("200", "404"), asList(10L, 2L)));
          assertResult(asList("200", "404"), asList(10L, 2L), asList(1L, 1L));
          function.accept(
              MeterEntity.newService("request_count", Layer.GENERAL), build(asList("200", "500"), asList(2L, 3L)));
          assertResult(asList("200", "404", "500"), asList(12L, 2L, 3L), asList(2L, 1L, 1L));
      }
  
      @Test
      public void testCalculate() {
          function.accept(
              MeterEntity.newService("request_count", Layer.GENERAL), build(asList("200", "404"), asList(10L, 2L)));
          function.accept(
              MeterEntity.newService("request_count", Layer.GENERAL), build(asList("200", "500"), asList(2L, 3L)));
          function.calculate();
  
          assertThat(function.getValue().sortedKeys(Comparator.naturalOrder())).isEqualTo(asList("200", "404", "500"));
          assertThat(function.getValue().sortedValues(Comparator.naturalOrder())).isEqualTo(asList(6L, 2L, 3L));
      }
  
      @Test
      public void testSerialize() {
          function.accept(
              MeterEntity.newService("request_count", Layer.GENERAL), build(asList("200", "404"), asList(10L, 2L)));
          AvgLabeledFunction function2 = Mockito.spy(AvgLabeledFunction.class);
          function2.deserialize(function.serialize().build());
          assertThat(function2.getEntityId()).isEqualTo(function.getEntityId());
          assertThat(function2.getTimeBucket()).isEqualTo(function.getTimeBucket());
      }
  
      @Test
      public void testBuilder() throws IllegalAccessException, InstantiationException {
          function.accept(
              MeterEntity.newService("request_count", Layer.GENERAL), build(asList("200", "404"), asList(10L, 2L)));
          function.calculate();
          StorageBuilder<AvgLabeledFunction> storageBuilder = function.builder().newInstance();
  
          final HashMapConverter.ToStorage toStorage = new HashMapConverter.ToStorage();
          storageBuilder.entity2Storage(function, toStorage);
          final Map<String, Object> map = toStorage.obtain();
          map.put(SUMMATION, ((DataTable) map.get(SUMMATION)).toStorageData());
          map.put(COUNT, ((DataTable) map.get(COUNT)).toStorageData());
          map.put(VALUE, ((DataTable) map.get(VALUE)).toStorageData());
  
          AvgLabeledFunction function2 = storageBuilder.storage2Entity(new HashMapConverter.ToEntity(map));
          assertThat(function2.getValue()).isEqualTo(function.getValue());
      }
  
      private DataTable build(List<String> keys, List<Long> values) {
          DataTable result = new DataTable();
          Stream.ofAll(keys).forEachWithIndex((key, i) -> result.put(key, values.get(i)));
          return result;
      }
  
      private void assertResult(List<String> expectedKeys, List<Long> expectedValues, List<Long> expectedCount) {
          assertSummation(expectedKeys, expectedValues);
          assertCount(expectedKeys, expectedCount);
      }
  
      private void assertCount(List<String> expectedKeys, List<Long> expectedCount) {
          List<String> keys = function.getCount().sortedKeys(Comparator.comparingInt(Integer::parseInt));
          assertThat(keys).isEqualTo(expectedKeys);
          List<Long> values = function.getCount().sortedValues(Comparator.comparingLong(Long::parseLong));
          assertThat(values).isEqualTo(expectedCount);
      }
  
      private void assertSummation(List<String> expectedKeys, List<Long> expectedValues) {
          List<String> keys = function.getSummation().sortedKeys(Comparator.comparingInt(Integer::parseInt));
          assertThat(keys).isEqualTo(expectedKeys);
          List<Long> values = function.getSummation().sortedValues(Comparator.comparingLong(Long::parseLong));
          assertThat(values).isEqualTo(expectedValues);
      }
  }
  