content: /**
   * Licensed 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.aurora.scheduler.sla;
  
  import java.util.Map;
  import java.util.Set;
  
  import com.google.common.collect.ImmutableMap;
  import com.google.common.collect.ImmutableMultimap;
  import com.google.common.collect.ImmutableSet;
  import com.google.common.collect.Multimap;
  
  import org.apache.aurora.common.quantity.Amount;
  import org.apache.aurora.common.quantity.Time;
  import org.apache.aurora.common.stats.StatsProvider;
  import org.apache.aurora.common.testing.easymock.EasyMockTest;
  import org.apache.aurora.common.util.testing.FakeClock;
  import org.apache.aurora.scheduler.base.Query;
  import org.apache.aurora.scheduler.sla.MetricCalculator.MetricCalculatorSettings;
  import org.apache.aurora.scheduler.sla.SlaGroup.GroupType;
  import org.apache.aurora.scheduler.storage.entities.IScheduledTask;
  import org.apache.aurora.scheduler.storage.testing.StorageTestUtil;
  import org.easymock.Capture;
  import org.easymock.CaptureType;
  import org.easymock.EasyMock;
  import org.junit.Test;
  
  import static org.apache.aurora.gen.ScheduleStatus.PENDING;
  import static org.apache.aurora.scheduler.sla.MetricCalculator.MetricCategory.JOB_UPTIMES;
  import static org.apache.aurora.scheduler.sla.MetricCalculator.MetricCategory.MEDIANS;
  import static org.apache.aurora.scheduler.sla.MetricCalculator.MetricCategory.PLATFORM_UPTIME;
  import static org.apache.aurora.scheduler.sla.MetricCalculator.NAME_QUALIFIER_NON_PROD;
  import static org.apache.aurora.scheduler.sla.MetricCalculator.NAME_QUALIFIER_PROD;
  import static org.apache.aurora.scheduler.sla.SlaAlgorithm.AlgorithmType;
  import static org.apache.aurora.scheduler.sla.SlaTestUtil.makeTask;
  import static org.easymock.EasyMock.expect;
  import static org.junit.Assert.assertEquals;
  
  public class MetricCalculatorTest extends EasyMockTest {
  
    static final Multimap<AlgorithmType, GroupType> PROD_METRICS =
        ImmutableMultimap.<AlgorithmType, GroupType>builder()
            .putAll(JOB_UPTIMES.getMetrics())
            .putAll(MEDIANS.getMetrics())
            .putAll(PLATFORM_UPTIME.getMetrics())
            .build();
  
    static final Multimap<AlgorithmType, GroupType> NON_PROD_METRICS =
        ImmutableMultimap.<AlgorithmType, GroupType>builder()
            .putAll(JOB_UPTIMES.getMetrics())
            .putAll(MEDIANS.getMetrics())
            .putAll(PLATFORM_UPTIME.getMetrics())
            .build();
  
    @Test
    public void testRun() {
      FakeClock clock = new FakeClock();
      StatsProvider statsProvider = createMock(StatsProvider.class);
      StatsProvider untracked = createMock(StatsProvider.class);
      MetricCalculatorSettings settings = new MetricCalculatorSettings(
          10000,
          ImmutableSet.of(JOB_UPTIMES, MEDIANS, PLATFORM_UPTIME),
          ImmutableSet.of(JOB_UPTIMES, MEDIANS, PLATFORM_UPTIME));
      StorageTestUtil storageUtil = new StorageTestUtil(this);
      MetricCalculator calculator = new MetricCalculator(
          storageUtil.storage,
          clock,
          settings,
          statsProvider);
  
      expect(statsProvider.untracked()).andReturn(untracked).anyTimes();
  
      Capture<String> names = new Capture<>(CaptureType.ALL);
      expect(untracked.makeGauge(EasyMock.capture(names), EasyMock.anyObject()))
          .andReturn(EasyMock.anyObject())
          .anyTimes();
  
      IScheduledTask task1 = makeTask(ImmutableMap.of(clock.nowMillis() - 1000, PENDING), 0);
      IScheduledTask task2 = makeTask(ImmutableMap.of(clock.nowMillis() - 2000, PENDING), 1);
      IScheduledTask task3 = makeTask(ImmutableMap.of(clock.nowMillis() - 3000, PENDING), 2);
      IScheduledTask task4 = makeTask(ImmutableMap.of(clock.nowMillis() - 4000, PENDING), 3, false);
  
      clock.advance(Amount.of(10L, Time.SECONDS));
      storageUtil.expectTaskFetch(Query.unscoped(), task1, task2, task3, task4);
      storageUtil.expectOperations();
  
      control.replay();
      calculator.run();
  
      Set<String> metricNames = generateMetricNames(
          ImmutableSet.of(task1, task2, task3, task4),
          ImmutableSet.of(PROD_METRICS, NON_PROD_METRICS));
  
      assertEquals(metricNames, ImmutableSet.copyOf(names.getValues()));
    }
  
    private Set<String> generateMetricNames(
        Set<IScheduledTask> tasks,
        Set<Multimap<AlgorithmType, GroupType>> definitions) {
  
      ImmutableSet.Builder<String> names = ImmutableSet.builder();
      for (Multimap<AlgorithmType, GroupType> definition : definitions) {
        for (Map.Entry<AlgorithmType, GroupType> entry : definition.entries()) {
          for (String metric : entry.getValue().getSlaGroup().createNamedGroups(tasks).keys()) {
            names.add(metric + entry.getKey().getAlgorithmName() + NAME_QUALIFIER_PROD);
            names.add(metric + entry.getKey().getAlgorithmName() + NAME_QUALIFIER_NON_PROD);
          }
        }
      }
  
      return names.build();
    }
  }
  