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.ambari.server.alerts;
  
  import static org.easymock.EasyMock.createNiceMock;
  import static org.easymock.EasyMock.expect;
  import static org.easymock.EasyMock.replay;
  import static org.easymock.EasyMock.verify;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertTrue;
  
  import java.lang.reflect.Field;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.ambari.server.actionmanager.ActionManager;
  import org.apache.ambari.server.alerts.AmbariPerformanceRunnable.PerformanceArea;
  import org.apache.ambari.server.controller.internal.ClusterResourceProvider;
  import org.apache.ambari.server.controller.spi.ClusterController;
  import org.apache.ambari.server.controller.utilities.ClusterControllerHelper;
  import org.apache.ambari.server.events.AlertEvent;
  import org.apache.ambari.server.events.AlertReceivedEvent;
  import org.apache.ambari.server.events.MockEventListener;
  import org.apache.ambari.server.events.publishers.AlertEventPublisher;
  import org.apache.ambari.server.orm.dao.AlertDefinitionDAO;
  import org.apache.ambari.server.orm.dao.AlertsDAO;
  import org.apache.ambari.server.orm.dao.HostRoleCommandDAO;
  import org.apache.ambari.server.orm.dao.RequestDAO;
  import org.apache.ambari.server.orm.entities.AlertCurrentEntity;
  import org.apache.ambari.server.orm.entities.AlertDefinitionEntity;
  import org.apache.ambari.server.state.Alert;
  import org.apache.ambari.server.state.AlertState;
  import org.apache.ambari.server.state.Cluster;
  import org.apache.ambari.server.state.Clusters;
  import org.apache.ambari.server.state.alert.AlertDefinition;
  import org.apache.ambari.server.state.alert.AlertDefinitionFactory;
  import org.apache.ambari.server.state.alert.ServerSource;
  import org.apache.ambari.server.testutils.PartialNiceMockBinder;
  import org.easymock.EasyMock;
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.powermock.api.easymock.PowerMock;
  import org.powermock.core.classloader.annotations.PrepareForTest;
  import org.powermock.modules.junit4.PowerMockRunner;
  
  import com.google.common.eventbus.EventBus;
  import com.google.inject.Binder;
  import com.google.inject.Guice;
  import com.google.inject.Injector;
  import com.google.inject.Module;
  
  /**
   * Tests {@link AmbariPerformanceRunnable}.
   */
  @RunWith(PowerMockRunner.class)
  @PrepareForTest({ ClusterControllerHelper.class, AmbariPerformanceRunnable.class,
      PerformanceArea.class })
  public class AmbariPerformanceRunnableTest {
  
    private final static long CLUSTER_ID = 1;
    private final static String CLUSTER_NAME = "c1";
  
    private final static String DEFINITION_NAME = "ambari_server_performance";
    private final static String DEFINITION_SERVICE = "AMBARI";
    private final static String DEFINITION_COMPONENT = "AMBARI_SERVER";
    private final static String DEFINITION_LABEL = "Mock Definition";
    private final static int DEFINITION_INTERVAL = 1;
  
    private Clusters m_clusters;
    private Cluster m_cluster;
    private Injector m_injector;
    private AlertsDAO m_alertsDao;
    private AlertDefinitionDAO m_definitionDao;
    private AlertDefinitionEntity m_definition;
    private List<AlertCurrentEntity> m_currentAlerts = new ArrayList<>();
    private MockEventListener m_listener;
  
    private AlertEventPublisher m_eventPublisher;
    private EventBus m_synchronizedBus;
  
    /**
     *
     */
    @Before
    public void setup() throws Exception {
      m_injector = Guice.createInjector(new MockModule());
      m_alertsDao = m_injector.getInstance(AlertsDAO.class);
      m_definitionDao = m_injector.getInstance(AlertDefinitionDAO.class);
      m_clusters = m_injector.getInstance(Clusters.class);
      m_cluster = m_injector.getInstance(Cluster.class);
      m_eventPublisher = m_injector.getInstance(AlertEventPublisher.class);
      m_listener = m_injector.getInstance(MockEventListener.class);
      m_definition = EasyMock.createNiceMock(AlertDefinitionEntity.class);
  
      // !!! need a synchronous op for testing
      m_synchronizedBus = new EventBus();
      Field field = AlertEventPublisher.class.getDeclaredField("m_eventBus");
      field.setAccessible(true);
      field.set(m_eventPublisher, m_synchronizedBus);
  
      // register mock listener
      m_synchronizedBus.register(m_listener);
  
      // create the cluster map
      Map<String,Cluster> clusterMap = new HashMap<>();
      clusterMap.put(CLUSTER_NAME, m_cluster);
  
      // mock the definition for the alert
      expect(m_definition.getDefinitionName()).andReturn(DEFINITION_NAME).atLeastOnce();
      expect(m_definition.getServiceName()).andReturn(DEFINITION_SERVICE).atLeastOnce();
      expect(m_definition.getComponentName()).andReturn(DEFINITION_COMPONENT).atLeastOnce();
      expect(m_definition.getLabel()).andReturn(DEFINITION_LABEL).atLeastOnce();
      expect(m_definition.getEnabled()).andReturn(true).atLeastOnce();
      expect(m_definition.getScheduleInterval()).andReturn(DEFINITION_INTERVAL).atLeastOnce();
  
      // mock the cluster
      expect(m_cluster.getClusterId()).andReturn(CLUSTER_ID).atLeastOnce();
  
      // mock clusters
      expect(m_clusters.getClusters()).andReturn(clusterMap).atLeastOnce();
  
      // mock the definition DAO
      expect(m_definitionDao.findByName(CLUSTER_ID, DEFINITION_NAME)).andReturn(
          m_definition).atLeastOnce();
  
      // mock the current dao
      expect(m_alertsDao.findCurrentByCluster(CLUSTER_ID)).andReturn(
          m_currentAlerts).atLeastOnce();
  
      // mock the factory and what it returns
      AlertDefinition definition = new AlertDefinition();
      definition.setDefinitionId(1L);
      definition.setName(DEFINITION_NAME);
      ServerSource source = new ServerSource();
      definition.setSource(source);
      AlertDefinitionFactory factory = m_injector.getInstance(AlertDefinitionFactory.class);
      expect(factory.coerce(EasyMock.anyObject(AlertDefinitionEntity.class))).andReturn(definition).atLeastOnce();
  
      ClusterController clusterController = m_injector.getInstance(ClusterController.class);
      PowerMock.mockStatic(ClusterControllerHelper.class);
      expect(ClusterControllerHelper.getClusterController()).andReturn(clusterController);
      PowerMock.replay(ClusterControllerHelper.class);
  
      replay(m_definition, m_cluster, m_clusters, m_definitionDao, m_alertsDao, factory,
          clusterController);
      }
  
    /**
     * @throws Exception
     */
    @After
    public void teardown() throws Exception {
    }
  
    /**
     * Tests that the event is triggerd with a status of OK if all performance
     * areas pass.
     */
    @Test
    public void testAlertFiresOKEvent() {
      // instantiate and inject mocks
      AmbariPerformanceRunnable runnable = new AmbariPerformanceRunnable(
          m_definition.getDefinitionName());
  
      m_injector.injectMembers(runnable);
  
      // run the alert
      runnable.run();
  
      assertEquals(1, m_listener.getAlertEventReceivedCount(AlertReceivedEvent.class));
  
      List<AlertEvent> events = m_listener.getAlertEventInstances(AlertReceivedEvent.class);
      assertEquals(1, events.size());
  
      AlertReceivedEvent event = (AlertReceivedEvent) events.get(0);
      Alert alert = event.getAlert();
      assertEquals("AMBARI", alert.getService());
      assertEquals("AMBARI_SERVER", alert.getComponent());
      assertEquals(DEFINITION_NAME, alert.getName());
  
      verify(m_cluster, m_clusters, m_definitionDao);
    }
  
    /**
     * Tests that the event is triggerd with a status of UNKNOWN.
     */
    @Test
    public void testAlertFiresUnknownEvent() {
      // mock one area, leaving others to fail
      RequestDAO requestDAO = m_injector.getInstance(RequestDAO.class);
      expect(requestDAO.findAllRequestIds(EasyMock.anyInt(), EasyMock.anyBoolean())).andReturn(new ArrayList<>());
  
      replay(requestDAO);
  
      // instantiate and inject mocks
      AmbariPerformanceRunnable runnable = new AmbariPerformanceRunnable(
          m_definition.getDefinitionName());
  
      m_injector.injectMembers(runnable);
  
      // run the alert
      runnable.run();
  
      assertEquals(1,
          m_listener.getAlertEventReceivedCount(AlertReceivedEvent.class));
  
      List<AlertEvent> events = m_listener.getAlertEventInstances(AlertReceivedEvent.class);
      assertEquals(1, events.size());
  
      AlertReceivedEvent event = (AlertReceivedEvent) events.get(0);
      Alert alert = event.getAlert();
      assertEquals("AMBARI", alert.getService());
      assertEquals("AMBARI_SERVER", alert.getComponent());
      assertEquals(AlertState.UNKNOWN, alert.getState());
      assertEquals(DEFINITION_NAME, alert.getName());
  
      // verify that even though there is 1 UNKNOWN, there should also be 1 OK as
      // well
      assertTrue(alert.getText().contains("(OK)"));
  
      verify(m_cluster, m_clusters, m_definitionDao);
    }
  
    /**
     *
     */
    private class MockModule implements Module {
      /**
       *
       */
      @Override
      public void configure(Binder binder) {
  
  
        PartialNiceMockBinder.newBuilder().addConfigsBindings()
            .addAlertDefinitionBinding().addLdapBindings().build().configure(binder);
  
        binder.bind(AlertsDAO.class).toInstance(createNiceMock(AlertsDAO.class));
        binder.bind(ActionManager.class).toInstance(createNiceMock(ActionManager.class));
        binder.bind(HostRoleCommandDAO.class).toInstance(createNiceMock(HostRoleCommandDAO.class));
        binder.bind(AlertDefinitionFactory.class).toInstance(createNiceMock(AlertDefinitionFactory.class));
        binder.bind(ClusterResourceProvider.class).toInstance(createNiceMock(ClusterResourceProvider.class));
        binder.bind(ClusterController.class).toInstance(createNiceMock(ClusterController.class));
        binder.bind(RequestDAO.class).toInstance(createNiceMock(RequestDAO.class));
      }
    }
  }
  