/*
 * 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.indexing.common.task;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.introspect.AnnotationIntrospectorPair;
import com.fasterxml.jackson.databind.jsontype.NamedType;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import org.apache.druid.client.coordinator.CoordinatorClient;
import org.apache.druid.client.indexing.ClientCompactionIOConfig;
import org.apache.druid.client.indexing.ClientCompactionIntervalSpec;
import org.apache.druid.client.indexing.ClientCompactionTaskGranularitySpec;
import org.apache.druid.client.indexing.ClientCompactionTaskQuery;
import org.apache.druid.client.indexing.ClientCompactionTaskQueryTuningConfig;
import org.apache.druid.client.indexing.ClientTaskQuery;
import org.apache.druid.client.indexing.IndexingServiceClient;
import org.apache.druid.client.indexing.NoopIndexingServiceClient;
import org.apache.druid.data.input.SegmentsSplitHintSpec;
import org.apache.druid.guice.GuiceAnnotationIntrospector;
import org.apache.druid.guice.GuiceInjectableValues;
import org.apache.druid.guice.GuiceInjectors;
import org.apache.druid.indexer.partitions.DynamicPartitionsSpec;
import org.apache.druid.indexing.common.RetryPolicyConfig;
import org.apache.druid.indexing.common.RetryPolicyFactory;
import org.apache.druid.indexing.common.SegmentCacheManagerFactory;
import org.apache.druid.indexing.common.TestUtils;
import org.apache.druid.indexing.common.task.batch.parallel.ParallelIndexTuningConfig;
import org.apache.druid.jackson.DefaultObjectMapper;
import org.apache.druid.java.util.common.HumanReadableBytes;
import org.apache.druid.java.util.common.Intervals;
import org.apache.druid.java.util.common.granularity.Granularities;
import org.apache.druid.segment.IndexSpec;
import org.apache.druid.segment.data.BitmapSerde.DefaultBitmapSerdeFactory;
import org.apache.druid.segment.data.CompressionFactory.LongEncodingStrategy;
import org.apache.druid.segment.data.CompressionStrategy;
import org.apache.druid.segment.incremental.RowIngestionMetersFactory;
import org.apache.druid.segment.realtime.appenderator.AppenderatorsManager;
import org.apache.druid.segment.realtime.firehose.ChatHandlerProvider;
import org.apache.druid.segment.realtime.firehose.NoopChatHandlerProvider;
import org.apache.druid.segment.writeout.TmpFileSegmentWriteOutMediumFactory;
import org.apache.druid.server.security.AuthTestUtils;
import org.apache.druid.server.security.AuthorizerMapper;
import org.joda.time.Duration;
import org.junit.Assert;
import org.junit.Test;

import java.io.IOException;
import java.util.HashMap;

public class ClientCompactionTaskQuerySerdeTest
{
  private static final RowIngestionMetersFactory ROW_INGESTION_METERS_FACTORY = new TestUtils()
      .getRowIngestionMetersFactory();
  private static final CoordinatorClient COORDINATOR_CLIENT = new CoordinatorClient(null, null);
  private static final AppenderatorsManager APPENDERATORS_MANAGER = new TestAppenderatorsManager();

  @Test
  public void testClientCompactionTaskQueryToCompactionTask() throws IOException
  {
    final ObjectMapper mapper = setupInjectablesInObjectMapper(new DefaultObjectMapper());
    final ClientCompactionTaskQuery query = new ClientCompactionTaskQuery(
        "id",
        "datasource",
        new ClientCompactionIOConfig(
            new ClientCompactionIntervalSpec(
                Intervals.of("2019/2020"),
                "testSha256OfSortedSegmentIds"
            ),
            true
        ),
        new ClientCompactionTaskQueryTuningConfig(
            null,
            40000,
            2000L,
            null,
            new SegmentsSplitHintSpec(new HumanReadableBytes(100000L), 10),
            new DynamicPartitionsSpec(100, 30000L),
            new IndexSpec(
                new DefaultBitmapSerdeFactory(),
                CompressionStrategy.LZ4,
                CompressionStrategy.LZF,
                LongEncodingStrategy.LONGS
            ),
            new IndexSpec(
                new DefaultBitmapSerdeFactory(),
                CompressionStrategy.LZ4,
                CompressionStrategy.UNCOMPRESSED,
                LongEncodingStrategy.AUTO
            ),
            2,
            1000L,
            TmpFileSegmentWriteOutMediumFactory.instance(),
            100,
            5,
            1000L,
            new Duration(3000L),
            7,
            1000,
            100
        ),
        new ClientCompactionTaskGranularitySpec(Granularities.DAY, Granularities.HOUR),
        ImmutableMap.of("key", "value")
    );

    final byte[] json = mapper.writeValueAsBytes(query);
    final CompactionTask task = (CompactionTask) mapper.readValue(json, Task.class);

    Assert.assertEquals(query.getId(), task.getId());
    Assert.assertEquals(query.getDataSource(), task.getDataSource());
    Assert.assertTrue(task.getIoConfig().getInputSpec() instanceof CompactionIntervalSpec);
    Assert.assertEquals(
        query.getIoConfig().getInputSpec().getInterval(),
        ((CompactionIntervalSpec) task.getIoConfig().getInputSpec()).getInterval()
    );
    Assert.assertEquals(
        query.getIoConfig().getInputSpec().getSha256OfSortedSegmentIds(),
        ((CompactionIntervalSpec) task.getIoConfig().getInputSpec()).getSha256OfSortedSegmentIds()
    );
    Assert.assertEquals(
        query.getTuningConfig().getMaxRowsInMemory().intValue(),
        task.getTuningConfig().getMaxRowsInMemory()
    );
    Assert.assertEquals(
        query.getTuningConfig().getMaxBytesInMemory().longValue(),
        task.getTuningConfig().getMaxBytesInMemory()
    );
    Assert.assertEquals(
        query.getTuningConfig().getSplitHintSpec(),
        task.getTuningConfig().getSplitHintSpec()
    );
    Assert.assertEquals(
        query.getTuningConfig().getPartitionsSpec(),
        task.getTuningConfig().getPartitionsSpec()
    );
    Assert.assertEquals(
        query.getTuningConfig().getIndexSpec(),
        task.getTuningConfig().getIndexSpec()
    );
    Assert.assertEquals(
        query.getTuningConfig().getIndexSpecForIntermediatePersists(),
        task.getTuningConfig().getIndexSpecForIntermediatePersists()
    );
    Assert.assertEquals(
        query.getTuningConfig().getPushTimeout().longValue(),
        task.getTuningConfig().getPushTimeout()
    );
    Assert.assertEquals(
        query.getTuningConfig().getSegmentWriteOutMediumFactory(),
        task.getTuningConfig().getSegmentWriteOutMediumFactory()
    );
    Assert.assertEquals(
        query.getTuningConfig().getMaxNumConcurrentSubTasks().intValue(),
        task.getTuningConfig().getMaxNumConcurrentSubTasks()
    );
    Assert.assertEquals(
        query.getTuningConfig().getMaxRetry().intValue(),
        task.getTuningConfig().getMaxRetry()
    );
    Assert.assertEquals(
        query.getTuningConfig().getTaskStatusCheckPeriodMs().longValue(),
        task.getTuningConfig().getTaskStatusCheckPeriodMs()
    );
    Assert.assertEquals(
        query.getTuningConfig().getChatHandlerTimeout(),
        task.getTuningConfig().getChatHandlerTimeout()
    );
    Assert.assertEquals(
        query.getTuningConfig().getMaxNumSegmentsToMerge().intValue(),
        task.getTuningConfig().getMaxNumSegmentsToMerge()
    );
    Assert.assertEquals(
        query.getTuningConfig().getTotalNumMergeTasks().intValue(),
        task.getTuningConfig().getTotalNumMergeTasks()
    );
    Assert.assertEquals(
        query.getGranularitySpec(),
        task.getGranularitySpec()
    );
    Assert.assertEquals(
        query.getGranularitySpec().getQueryGranularity(),
        task.getGranularitySpec().getQueryGranularity()
    );
    Assert.assertEquals(
        query.getGranularitySpec().getSegmentGranularity(),
        task.getGranularitySpec().getSegmentGranularity()
    );
    Assert.assertEquals(
        query.getIoConfig().isDropExisting(),
        task.getIoConfig().isDropExisting()
    );
    Assert.assertEquals(query.getContext(), task.getContext());
  }

  @Test
  public void testCompactionTaskToClientCompactionTaskQuery() throws IOException
  {
    final ObjectMapper mapper = setupInjectablesInObjectMapper(new DefaultObjectMapper());
    final CompactionTask.Builder builder = new CompactionTask.Builder(
        "datasource",
        new SegmentCacheManagerFactory(mapper),
        new RetryPolicyFactory(new RetryPolicyConfig())
    );
    final CompactionTask task = builder
        .inputSpec(new CompactionIntervalSpec(Intervals.of("2019/2020"), "testSha256OfSortedSegmentIds"), true)
        .tuningConfig(
            new ParallelIndexTuningConfig(
                null,
                null,
                null,
                40000,
                2000L,
                null,
                null,
                null,
                new SegmentsSplitHintSpec(new HumanReadableBytes(100000L), 10),
                new DynamicPartitionsSpec(100, 30000L),
                new IndexSpec(
                    new DefaultBitmapSerdeFactory(),
                    CompressionStrategy.LZ4,
                    CompressionStrategy.LZF,
                    LongEncodingStrategy.LONGS
                ),
                new IndexSpec(
                    new DefaultBitmapSerdeFactory(),
                    CompressionStrategy.LZ4,
                    CompressionStrategy.UNCOMPRESSED,
                    LongEncodingStrategy.AUTO
                ),
                2,
                null,
                null,
                1000L,
                TmpFileSegmentWriteOutMediumFactory.instance(),
                null,
                100,
                5,
                1000L,
                new Duration(3000L),
                7,
                1000,
                100,
                null,
                null,
                null,
                null,
                null
            )
        )
        .granularitySpec(new ClientCompactionTaskGranularitySpec(Granularities.DAY, Granularities.HOUR))
        .build();

    final ClientCompactionTaskQuery expected = new ClientCompactionTaskQuery(
        task.getId(),
        "datasource",
        new ClientCompactionIOConfig(
            new ClientCompactionIntervalSpec(
                Intervals.of("2019/2020"),
                "testSha256OfSortedSegmentIds"
            ),
            true
        ),
        new ClientCompactionTaskQueryTuningConfig(
            100,
            40000,
            2000L,
            30000L,
            new SegmentsSplitHintSpec(new HumanReadableBytes(100000L), 10),
            new DynamicPartitionsSpec(100, 30000L),
            new IndexSpec(
                new DefaultBitmapSerdeFactory(),
                CompressionStrategy.LZ4,
                CompressionStrategy.LZF,
                LongEncodingStrategy.LONGS
            ),
            new IndexSpec(
                new DefaultBitmapSerdeFactory(),
                CompressionStrategy.LZ4,
                CompressionStrategy.UNCOMPRESSED,
                LongEncodingStrategy.AUTO
            ),
            2,
            1000L,
            TmpFileSegmentWriteOutMediumFactory.instance(),
            100,
            5,
            1000L,
            new Duration(3000L),
            7,
            1000,
            100
        ),
        new ClientCompactionTaskGranularitySpec(Granularities.DAY, Granularities.HOUR),
        new HashMap<>()
    );

    final byte[] json = mapper.writeValueAsBytes(task);
    final ClientCompactionTaskQuery actual = (ClientCompactionTaskQuery) mapper.readValue(json, ClientTaskQuery.class);

    Assert.assertEquals(expected, actual);
  }

  private static ObjectMapper setupInjectablesInObjectMapper(ObjectMapper objectMapper)
  {
    final GuiceAnnotationIntrospector guiceIntrospector = new GuiceAnnotationIntrospector();
    objectMapper.setAnnotationIntrospectors(
        new AnnotationIntrospectorPair(
            guiceIntrospector,
            objectMapper.getSerializationConfig().getAnnotationIntrospector()
        ),
        new AnnotationIntrospectorPair(
            guiceIntrospector,
            objectMapper.getDeserializationConfig().getAnnotationIntrospector()
        )
    );
    GuiceInjectableValues injectableValues = new GuiceInjectableValues(
        GuiceInjectors.makeStartupInjectorWithModules(
            ImmutableList.of(
                binder -> {
                  binder.bind(AuthorizerMapper.class).toInstance(AuthTestUtils.TEST_AUTHORIZER_MAPPER);
                  binder.bind(ChatHandlerProvider.class).toInstance(new NoopChatHandlerProvider());
                  binder.bind(RowIngestionMetersFactory.class).toInstance(ROW_INGESTION_METERS_FACTORY);
                  binder.bind(CoordinatorClient.class).toInstance(COORDINATOR_CLIENT);
                  binder.bind(SegmentCacheManagerFactory.class).toInstance(new SegmentCacheManagerFactory(objectMapper));
                  binder.bind(AppenderatorsManager.class).toInstance(APPENDERATORS_MANAGER);
                  binder.bind(IndexingServiceClient.class).toInstance(new NoopIndexingServiceClient());
                }
            )
        )
    );
    objectMapper.setInjectableValues(injectableValues);
    objectMapper.registerSubtypes(new NamedType(ParallelIndexTuningConfig.class, "index_parallel"));
    return objectMapper;
  }
}