server/src/test/java/org/apache/druid/server/coordinator/duty/KillRulesTest.java

/*
 * 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.druid.server.coordinator.duty;

import org.apache.druid.java.util.emitter.service.ServiceEmitter;
import org.apache.druid.java.util.emitter.service.ServiceEventBuilder;
import org.apache.druid.metadata.MetadataRuleManager;
import org.apache.druid.server.coordinator.DruidCoordinatorRuntimeParams;
import org.apache.druid.server.coordinator.TestDruidCoordinatorConfig;
import org.joda.time.Duration;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.mockito.ArgumentMatchers;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.junit.MockitoJUnitRunner;

@RunWith(MockitoJUnitRunner.class)
public class KillRulesTest
{
  @Mock
  private MetadataRuleManager mockRuleManager;

  @Mock
  private DruidCoordinatorRuntimeParams mockDruidCoordinatorRuntimeParams;

  @Mock
  private ServiceEmitter mockServiceEmitter;

  @Rule
  public ExpectedException exception = ExpectedException.none();

  private KillRules killRules;

  @Before
  public void setup()
  {
    Mockito.when(mockDruidCoordinatorRuntimeParams.getDatabaseRuleManager()).thenReturn(mockRuleManager);
  }

  @Test
  public void testRunSkipIfLastRunLessThanPeriod()
  {
    TestDruidCoordinatorConfig druidCoordinatorConfig = new TestDruidCoordinatorConfig(
        null,
        null,
        null,
        new Duration("PT5S"),
        null,
        null,
        null,
        null,
        null,
        null,
        null,
        new Duration(Long.MAX_VALUE),
        new Duration("PT1S"),
        10,
        null
    );
    killRules = new KillRules(druidCoordinatorConfig);
    killRules.run(mockDruidCoordinatorRuntimeParams);
    Mockito.verifyZeroInteractions(mockRuleManager);
  }

  @Test
  public void testRunNotSkipIfLastRunMoreThanPeriod()
  {
    Mockito.when(mockDruidCoordinatorRuntimeParams.getEmitter()).thenReturn(mockServiceEmitter);
    TestDruidCoordinatorConfig druidCoordinatorConfig = new TestDruidCoordinatorConfig(
        null,
        null,
        null,
        new Duration("PT5S"),
        null,
        null,
        null,
        null,
        null,
        null,
        null,
        new Duration("PT6S"),
        new Duration("PT1S"),
        10,
        null
    );
    killRules = new KillRules(druidCoordinatorConfig);
    killRules.run(mockDruidCoordinatorRuntimeParams);
    Mockito.verify(mockRuleManager).removeRulesForEmptyDatasourcesOlderThan(ArgumentMatchers.anyLong());
    Mockito.verify(mockServiceEmitter).emit(ArgumentMatchers.any(ServiceEventBuilder.class));
  }

  @Test
  public void testConstructorFailIfInvalidPeriod()
  {
    TestDruidCoordinatorConfig druidCoordinatorConfig = new TestDruidCoordinatorConfig(
        null,
        null,
        null,
        new Duration("PT5S"),
        null,
        null,
        null,
        null,
        null,
        null,
        null,
        new Duration("PT3S"),
        new Duration("PT1S"),
        10,
        null
    );
    exception.expect(IllegalArgumentException.class);
    exception.expectMessage("coordinator rule kill period must be >= druid.coordinator.period.metadataStoreManagementPeriod");
    killRules = new KillRules(druidCoordinatorConfig);
  }

  @Test
  public void testConstructorFailIfInvalidRetainDuration()
  {
    TestDruidCoordinatorConfig druidCoordinatorConfig = new TestDruidCoordinatorConfig(
        null,
        null,
        null,
        new Duration("PT5S"),
        null,
        null,
        null,
        null,
        null,
        null,
        null,
        new Duration("PT6S"),
        new Duration("PT-1S"),
        10,
        null
    );
    exception.expect(IllegalArgumentException.class);
    exception.expectMessage("coordinator rule kill retainDuration must be >= 0");
    killRules = new KillRules(druidCoordinatorConfig);
  }
}