/**
 * 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.hadoop.metrics2.sink.storm;

import static org.apache.hadoop.metrics2.sink.storm.StormTimelineMetricsSink.METRIC_NAME_PREFIX_KAFKA_OFFSET;
import static org.apache.hadoop.metrics2.sink.storm.StormTimelineMetricsSink.SYSTEM_TASK_ID;
import static org.easymock.EasyMock.anyObject;
import static org.easymock.EasyMock.createMockBuilder;
import static org.easymock.EasyMock.createNiceMock;
import static org.easymock.EasyMock.expect;
import static org.easymock.EasyMock.expectLastCall;
import static org.easymock.EasyMock.replay;
import static org.easymock.EasyMock.verify;

import java.io.IOException;
import java.net.SocketAddress;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.hadoop.metrics2.sink.timeline.TimelineMetric;
import org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache;
import org.apache.storm.Constants;
import org.apache.storm.shade.com.google.common.collect.Lists;
import org.junit.Ignore;
import org.junit.Test;

import org.apache.storm.metric.api.IMetricsConsumer;

public class StormTimelineMetricsSinkTest {
  @Test
  public void testNonNumericMetricMetricExclusion() throws InterruptedException, IOException {
    StormTimelineMetricsSink stormTimelineMetricsSink = new StormTimelineMetricsSink();
    stormTimelineMetricsSink.setTopologyName("topology1");
    TimelineMetricsCache timelineMetricsCache = createNiceMock(TimelineMetricsCache.class);
    stormTimelineMetricsSink.setMetricsCache(timelineMetricsCache);
    replay(timelineMetricsCache);
    stormTimelineMetricsSink.handleDataPoints(
        new IMetricsConsumer.TaskInfo("localhost", 1234, "testComponent", 42, 20000L, 60),
        Collections.singleton(new IMetricsConsumer.DataPoint("key1", "value1")));
    verify(timelineMetricsCache);
  }

  @Test
  @Ignore // TODO: Fix for failover
  public void testNumericMetricMetricSubmission() throws InterruptedException, IOException {
    StormTimelineMetricsSink stormTimelineMetricsSink = new StormTimelineMetricsSink();
    stormTimelineMetricsSink.setTopologyName("topology1");
    TimelineMetricsCache timelineMetricsCache = createNiceMock(TimelineMetricsCache.class);
    expect(timelineMetricsCache.getTimelineMetric("topology.topology1.testComponent.localhost.1234.42.key1"))
        .andReturn(new TimelineMetric()).once();
    timelineMetricsCache.putTimelineMetric(anyObject(TimelineMetric.class));
    expectLastCall().once();
    stormTimelineMetricsSink.setMetricsCache(timelineMetricsCache);
    replay(timelineMetricsCache);
    stormTimelineMetricsSink.handleDataPoints(
        new IMetricsConsumer.TaskInfo("localhost", 1234, "testComponent", 42, 20000L, 60),
        Collections.singleton(new IMetricsConsumer.DataPoint("key1", 42)));
    verify(timelineMetricsCache);
  }

  @Test
  @Ignore // TODO: Fix for failover
  public void testTopicLevelKafkaOffsetMetricSubmission() throws InterruptedException, IOException {
    StormTimelineMetricsSink stormTimelineMetricsSink = new StormTimelineMetricsSink();
    stormTimelineMetricsSink.setTopologyName("topology1");
    TimelineMetricsCache timelineMetricsCache = createNiceMock(TimelineMetricsCache.class);
    expect(timelineMetricsCache.getTimelineMetric("topology.topology1.kafka-topic.topic1.totalLatestTimeOffset"))
        .andReturn(new TimelineMetric()).once();
    timelineMetricsCache.putTimelineMetric(anyObject(TimelineMetric.class));
    expectLastCall().once();
    stormTimelineMetricsSink.setMetricsCache(timelineMetricsCache);
    replay(timelineMetricsCache);
    stormTimelineMetricsSink.handleDataPoints(
        new IMetricsConsumer.TaskInfo("localhost", 1234, "testComponent", 42, 20000L, 60),
        Collections.singleton(new IMetricsConsumer.DataPoint(METRIC_NAME_PREFIX_KAFKA_OFFSET + "topic1/totalLatestTimeOffset", 42)));
    verify(timelineMetricsCache);
  }

  @Test
  @Ignore // TODO: Fix for failover
  public void testPartitionLevelKafkaOffsetMetricSubmission() throws InterruptedException, IOException {
    StormTimelineMetricsSink stormTimelineMetricsSink = new StormTimelineMetricsSink();
    stormTimelineMetricsSink.setTopologyName("topology1");
    TimelineMetricsCache timelineMetricsCache = createNiceMock(TimelineMetricsCache.class);
    expect(timelineMetricsCache.getTimelineMetric("topology.topology1.kafka-topic.topic1.partition-1.latestTimeOffset"))
        .andReturn(new TimelineMetric()).once();
    timelineMetricsCache.putTimelineMetric(anyObject(TimelineMetric.class));
    expectLastCall().once();
    stormTimelineMetricsSink.setMetricsCache(timelineMetricsCache);
    replay(timelineMetricsCache);
    stormTimelineMetricsSink.handleDataPoints(
        new IMetricsConsumer.TaskInfo("localhost", 1234, "testComponent", 42, 20000L, 60),
        Collections.singleton(new IMetricsConsumer.DataPoint(METRIC_NAME_PREFIX_KAFKA_OFFSET + "topic1/partition_1/latestTimeOffset", 42)));
    verify(timelineMetricsCache);
  }

  @Test
  @Ignore // TODO: Fix for failover
  public void testMapMetricMetricSubmission() throws InterruptedException, IOException {
    StormTimelineMetricsSink stormTimelineMetricsSink = new StormTimelineMetricsSink();
    stormTimelineMetricsSink.setTopologyName("topology1");
    TimelineMetricsCache timelineMetricsCache = createNiceMock(TimelineMetricsCache.class);
    expect(timelineMetricsCache.getTimelineMetric("topology.topology1.testComponent.localhost.1234.42.key1.field1"))
        .andReturn(new TimelineMetric()).once();
    expect(timelineMetricsCache.getTimelineMetric("topology.topology1.testComponent.localhost.1234.42.key1.field2"))
        .andReturn(new TimelineMetric()).once();
    timelineMetricsCache.putTimelineMetric(anyObject(TimelineMetric.class));
    expectLastCall().once();
    stormTimelineMetricsSink.setMetricsCache(timelineMetricsCache);
    replay(timelineMetricsCache);

    Map<String, Object> valueMap = getTestValueMap();
    stormTimelineMetricsSink.handleDataPoints(
        new IMetricsConsumer.TaskInfo("localhost", 1234, "testComponent", 42, 20000L, 60),
        Collections.singleton(new IMetricsConsumer.DataPoint("key1", valueMap)));
    verify(timelineMetricsCache);
  }

  @Test
  @Ignore // TODO: Fix for failover
  public void testWorkerLevelAggregatedNumericMetricMetricSubmission() throws InterruptedException, IOException {
    StormTimelineMetricsSink stormTimelineMetricsSink = new StormTimelineMetricsSink();
    stormTimelineMetricsSink.setTopologyName("topology1");
    TimelineMetricsCache timelineMetricsCache = createNiceMock(TimelineMetricsCache.class);
    expect(timelineMetricsCache.getTimelineMetric("topology.topology1.testComponent.localhost.1234." + SYSTEM_TASK_ID + ".key1"))
        .andReturn(new TimelineMetric()).once();
    timelineMetricsCache.putTimelineMetric(anyObject(TimelineMetric.class));
    expectLastCall().once();
    stormTimelineMetricsSink.setMetricsCache(timelineMetricsCache);
    replay(timelineMetricsCache);

    stormTimelineMetricsSink.handleDataPoints(
        new IMetricsConsumer.TaskInfo("localhost", 1234, "testComponent", SYSTEM_TASK_ID, 20000L, 60),
        Collections.singleton(new IMetricsConsumer.DataPoint("key1", Lists.newArrayList(42.3, 42.3))));
    verify(timelineMetricsCache);
  }

  @Test
  @Ignore // TODO: Fix for failover
  public void testWorkerLevelAggregatedMapMetricMetricSubmission() throws InterruptedException, IOException {
    StormTimelineMetricsSink stormTimelineMetricsSink = new StormTimelineMetricsSink();
    stormTimelineMetricsSink.setTopologyName("topology1");
    TimelineMetricsCache timelineMetricsCache = createNiceMock(TimelineMetricsCache.class);
    expect(timelineMetricsCache.getTimelineMetric("topology.topology1.testComponent.localhost.1234." + SYSTEM_TASK_ID + ".key1.field1"))
        .andReturn(new TimelineMetric()).once();
    timelineMetricsCache.putTimelineMetric(anyObject(TimelineMetric.class));
    expectLastCall().once();
    stormTimelineMetricsSink.setMetricsCache(timelineMetricsCache);
    replay(timelineMetricsCache);

    List<Map<String, Object>> valueMapList = new ArrayList<>();
    valueMapList.add(getTestValueMap());
    valueMapList.add(getTestValueMap());

    stormTimelineMetricsSink.handleDataPoints(
        new IMetricsConsumer.TaskInfo("localhost", 1234, "testComponent", SYSTEM_TASK_ID, 20000L, 60),
        Collections.singleton(new IMetricsConsumer.DataPoint("key1", valueMapList)));
    verify(timelineMetricsCache);
  }

  private Map<String, Object> getTestValueMap() {
    Map<String, Object> valueMap = new HashMap<>();
    valueMap.put("field1", 53);
    valueMap.put("field2", 64.12);
    return valueMap;
  }
}