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   * 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.controller.metrics.timeline;
  
  import static org.mockito.Mockito.mock;
  
  import java.io.File;
  import java.lang.reflect.Field;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Set;
  
  import org.apache.ambari.server.configuration.ComponentSSLConfiguration;
  import org.apache.ambari.server.configuration.Configuration;
  import org.apache.ambari.server.controller.internal.PropertyInfo;
  import org.apache.ambari.server.controller.internal.ResourceImpl;
  import org.apache.ambari.server.controller.internal.TemporalInfoImpl;
  import org.apache.ambari.server.controller.internal.URLStreamProvider;
  import org.apache.ambari.server.controller.metrics.ganglia.TestStreamProvider;
  import org.apache.ambari.server.controller.metrics.timeline.AMSPropertyProviderTest.TestMetricHostProvider;
  import org.apache.ambari.server.controller.metrics.timeline.cache.TimelineMetricCacheEntryFactory;
  import org.apache.ambari.server.controller.metrics.timeline.cache.TimelineMetricCacheProvider;
  import org.apache.ambari.server.controller.spi.Request;
  import org.apache.ambari.server.controller.spi.Resource;
  import org.apache.ambari.server.controller.spi.TemporalInfo;
  import org.apache.ambari.server.controller.utilities.PropertyHelper;
  import org.apache.http.client.utils.URIBuilder;
  import org.junit.Assert;
  import org.junit.BeforeClass;
  import org.junit.Test;
  
  public class AMSReportPropertyProviderTest {
    private static final String CLUSTER_NAME_PROPERTY_ID = PropertyHelper.getPropertyId("Clusters", "cluster_name");
    private static final String FILE_PATH_PREFIX = "ams" + File.separator;
    private static final String SINGLE_HOST_METRICS_FILE_PATH = FILE_PATH_PREFIX + "single_host_metric.json";
    private static final String AGGREGATE_CLUSTER_METRICS_FILE_PATH = FILE_PATH_PREFIX + "aggregate_cluster_metrics.json";
  
    private static TimelineMetricCacheEntryFactory cacheEntryFactory;
    private static TimelineMetricCacheProvider cacheProvider;
  
    @BeforeClass
    public static void setupCache() {
      cacheEntryFactory = new TimelineMetricCacheEntryFactory(new Configuration());
      cacheProvider = new TimelineMetricCacheProvider(new Configuration(), cacheEntryFactory);
    }
  
    @Test
    public void testPopulateResources() throws Exception {
      TestStreamProvider streamProvider = new TestStreamProvider(SINGLE_HOST_METRICS_FILE_PATH);
      injectCacheEntryFactoryWithStreamProvider(streamProvider);
      TestMetricHostProvider metricHostProvider = new TestMetricHostProvider();
      ComponentSSLConfiguration sslConfiguration = mock(ComponentSSLConfiguration.class);
  
      Map<String, Map<String, PropertyInfo>> propertyIds =
        PropertyHelper.getMetricPropertyIds(Resource.Type.Cluster);
  
      AMSReportPropertyProvider propertyProvider =
        new AMSReportPropertyProvider(
          propertyIds,
          streamProvider,
          sslConfiguration,
          cacheProvider,
          metricHostProvider,
          CLUSTER_NAME_PROPERTY_ID
      );
  
      String propertyId = PropertyHelper.getPropertyId("metrics/cpu", "User");
      Resource resource = new ResourceImpl(Resource.Type.Cluster);
      resource.setProperty(CLUSTER_NAME_PROPERTY_ID, "c1");
      Map<String, TemporalInfo> temporalInfoMap = new HashMap<>();
      temporalInfoMap.put(propertyId, new TemporalInfoImpl(1416445244800L, 1416448936474L, 1L));
      Request request = PropertyHelper.getReadRequest(
        Collections.singleton(propertyId), temporalInfoMap);
      Set<Resource> resources =
        propertyProvider.populateResources(Collections.singleton(resource), request, null);
      Assert.assertEquals(1, resources.size());
      Resource res = resources.iterator().next();
      Map<String, Object> properties = PropertyHelper.getProperties(resources.iterator().next());
      Assert.assertNotNull(properties);
      URIBuilder uriBuilder = AMSPropertyProvider.getAMSUriBuilder("localhost", 6188, false);
      uriBuilder.addParameter("metricNames", "cpu_user");
      uriBuilder.addParameter("appId", "HOST");
      uriBuilder.addParameter("startTime", "1416445244800");
      uriBuilder.addParameter("endTime", "1416448936474");
      Assert.assertEquals(uriBuilder.toString(), streamProvider.getLastSpec());
      Number[][] val = (Number[][]) res.getPropertyValue("metrics/cpu/User");
      Assert.assertEquals(111, val.length);
    }
  
    @Test
    public void testPopulateResourceWithAggregateFunction() throws Exception {
      TestStreamProvider streamProvider = new TestStreamProvider(AGGREGATE_CLUSTER_METRICS_FILE_PATH);
      injectCacheEntryFactoryWithStreamProvider(streamProvider);
      TestMetricHostProvider metricHostProvider = new TestMetricHostProvider();
      ComponentSSLConfiguration sslConfiguration = mock(ComponentSSLConfiguration.class);
  
      Map<String, Map<String, PropertyInfo>> propertyIds =
        PropertyHelper.getMetricPropertyIds(Resource.Type.Cluster);
  
      AMSReportPropertyProvider propertyProvider =
        new AMSReportPropertyProvider(
          propertyIds,
          streamProvider,
          sslConfiguration,
          cacheProvider,
          metricHostProvider,
          CLUSTER_NAME_PROPERTY_ID
      );
  
      String propertyId = PropertyHelper.getPropertyId("metrics/cpu", "User._sum");
      Resource resource = new ResourceImpl(Resource.Type.Cluster);
      resource.setProperty(CLUSTER_NAME_PROPERTY_ID, "c1");
      Map<String, TemporalInfo> temporalInfoMap = new HashMap<>();
      temporalInfoMap.put(propertyId, new TemporalInfoImpl(1432033257812L, 1432035927922L, 1L));
      Request request = PropertyHelper.getReadRequest(
        Collections.singleton(propertyId), temporalInfoMap);
      Set<Resource> resources =
        propertyProvider.populateResources(Collections.singleton(resource), request, null);
      Assert.assertEquals(1, resources.size());
      Resource res = resources.iterator().next();
      Map<String, Object> properties = PropertyHelper.getProperties(resources.iterator().next());
      Assert.assertNotNull(properties);
      URIBuilder uriBuilder = AMSPropertyProvider.getAMSUriBuilder("localhost", 6188, false);
      uriBuilder.addParameter("metricNames", "cpu_user._sum");
      uriBuilder.addParameter("appId", "HOST");
      uriBuilder.addParameter("startTime", "1432033257812");
      uriBuilder.addParameter("endTime", "1432035927922");
      Assert.assertEquals(uriBuilder.toString(), streamProvider.getLastSpec());
      Number[][] val = (Number[][]) res.getPropertyValue("metrics/cpu/User._sum");
      Assert.assertEquals(90, val.length);
    }
  
    /* Since streamProviders are not injected this hack becomes necessary */
    private void injectCacheEntryFactoryWithStreamProvider(URLStreamProvider streamProvider) throws Exception {
      Field field = TimelineMetricCacheEntryFactory.class.getDeclaredField("requestHelperForGets");
      field.setAccessible(true);
      field.set(cacheEntryFactory, new MetricsRequestHelper(streamProvider));
    }
  }
  