/*
 * 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.geode.cache.lucene;

import static junitparams.JUnitParamsRunner.$;
import static org.apache.geode.cache.RegionShortcut.PARTITION;
import static org.apache.geode.cache.RegionShortcut.PARTITION_OVERFLOW;
import static org.apache.geode.cache.RegionShortcut.PARTITION_PERSISTENT;
import static org.apache.geode.cache.RegionShortcut.PARTITION_PERSISTENT_OVERFLOW;
import static org.apache.geode.cache.RegionShortcut.PARTITION_REDUNDANT;
import static org.apache.geode.cache.RegionShortcut.PARTITION_REDUNDANT_OVERFLOW;
import static org.apache.geode.cache.RegionShortcut.PARTITION_REDUNDANT_PERSISTENT;
import static org.apache.geode.cache.RegionShortcut.PARTITION_REDUNDANT_PERSISTENT_OVERFLOW;
import static org.apache.geode.cache.lucene.test.LuceneTestUtilities.DEFAULT_FIELD;
import static org.apache.geode.cache.lucene.test.LuceneTestUtilities.INDEX_NAME;
import static org.apache.geode.cache.lucene.test.LuceneTestUtilities.REGION_NAME;
import static org.apache.geode.cache.lucene.test.LuceneTestUtilities.createIndex;
import static org.apache.geode.cache.lucene.test.LuceneTestUtilities.getIndexQueue;
import static org.apache.geode.cache.lucene.test.LuceneTestUtilities.pauseSender;
import static org.apache.geode.cache.lucene.test.LuceneTestUtilities.verifyIndexFinishFlushing;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import java.io.File;
import java.util.concurrent.TimeUnit;
import java.util.function.Consumer;

import junitparams.JUnitParamsRunner;
import junitparams.Parameters;
import org.awaitility.Awaitility;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.rules.TemporaryFolder;
import org.junit.runner.RunWith;

import org.apache.geode.cache.PartitionAttributesFactory;
import org.apache.geode.cache.Region;
import org.apache.geode.cache.RegionShortcut;
import org.apache.geode.cache.asyncqueue.AsyncEventQueue;
import org.apache.geode.cache.lucene.test.LuceneTestUtilities;
import org.apache.geode.cache.lucene.test.TestObject;
import org.apache.geode.internal.cache.GemFireCacheImpl;
import org.apache.geode.internal.cache.LocalRegion;
import org.apache.geode.test.junit.categories.IntegrationTest;

/**
 * Tests of lucene index creation that use persistence
 */
@Category(IntegrationTest.class)
@RunWith(JUnitParamsRunner.class)
public class LuceneIndexCreationPersistenceIntegrationTest extends LuceneIntegrationTest {

  @Rule
  public TemporaryFolder tempFolderRule = new TemporaryFolder();

  @Override
  public void createCache() {
    super.createCache();
    cache.createDiskStoreFactory().setDiskDirs(new File[] {tempFolderRule.getRoot()})
        .setMaxOplogSize(1).create(GemFireCacheImpl.getDefaultDiskStoreName());
  }

  @Test
  public void shouldNotUseOverflowForInternalRegionsWhenUserRegionHasOverflow() {
    createIndex(cache, "text");
    cache.createRegionFactory(RegionShortcut.PARTITION_OVERFLOW).create(REGION_NAME);
    verifyInternalRegions(region -> {
      assertTrue(region.getAttributes().getEvictionAttributes().getAction().isNone());
    });
  }

  @Test
  public void shouldInheritRecoveryDelayFromUserRegion() {
    createIndex(cache, "text");

    PartitionAttributesFactory paf = new PartitionAttributesFactory();
    paf.setRecoveryDelay(0);

    cache.createRegionFactory(RegionShortcut.PARTITION).setPartitionAttributes(paf.create())
        .create(REGION_NAME);
    verifyInternalRegions(region -> {
      assertEquals(0, region.getAttributes().getPartitionAttributes().getRecoveryDelay());
    });
  }

  @Test
  public void shouldInheritStartupRecoveryDelayFromUserRegion() {
    createIndex(cache, "text");

    PartitionAttributesFactory paf = new PartitionAttributesFactory();
    paf.setStartupRecoveryDelay(1);

    cache.createRegionFactory(RegionShortcut.PARTITION).setPartitionAttributes(paf.create())
        .create(REGION_NAME);
    verifyInternalRegions(region -> {
      assertEquals(1, region.getAttributes().getPartitionAttributes().getStartupRecoveryDelay());
    });
  }

  @Test
  public void shouldNotUseDiskStoreWhenUserRegionIsNotPersistent() {
    createIndex(cache, "text");
    String diskStoreName = "diskStore";
    cache.createDiskStoreFactory().setDiskDirs(new File[] {tempFolderRule.getRoot()})
        .create(diskStoreName);
    cache.createRegionFactory(RegionShortcut.PARTITION_OVERFLOW).setDiskStoreName(diskStoreName)
        .create(REGION_NAME);
    verifyInternalRegions(region -> {
      assertTrue(region.getAttributes().getDiskStoreName() == null);
      assertTrue(region.getAttributes().getEvictionAttributes().getAction().isNone());
    });
  }

  @Test
  @Parameters({"true", "false"})
  public void aeqShouldAlwaysBeDiskSynchronousWhenUserRegionIsEither(boolean synchronous) {
    createIndex(cache, "text");
    cache.createRegionFactory(RegionShortcut.PARTITION_PERSISTENT).setDiskSynchronous(synchronous)
        .create(REGION_NAME);
    verifyInternalRegions(region -> {
      assertTrue(region.getDataPolicy().withPersistence());
      // Underlying region should always be synchronous
      assertTrue(region.isDiskSynchronous());
    });
    AsyncEventQueue queue = getIndexQueue(cache);
    assertTrue(queue.isDiskSynchronous());
    assertEquals(true, queue.isPersistent());
  }

  @Test
  public void shouldRecoverPersistentIndexWhenDataStillInQueue() throws Exception {
    createIndex(cache, "field1", "field2");
    Region dataRegion =
        cache.createRegionFactory(RegionShortcut.PARTITION_PERSISTENT).create(REGION_NAME);
    // Pause the sender so that the entry stays in the queue
    pauseSender(cache);

    dataRegion.put("A", new TestObject());
    cache.close();
    createCache();
    createIndex(cache, "field1", "field2");
    dataRegion = cache.createRegionFactory(RegionShortcut.PARTITION_PERSISTENT).create(REGION_NAME);
    verifyIndexFinishFlushing(cache, INDEX_NAME, REGION_NAME);
    LuceneQuery<Object, Object> query = luceneService.createLuceneQueryFactory().create(INDEX_NAME,
        REGION_NAME, "field1:world", DEFAULT_FIELD);
    assertEquals(1, query.findPages().size());
  }

  @Test
  public void shouldRecoverPersistentIndexWhenDataIsWrittenToIndex() throws Exception {
    createIndex(cache, "field1", "field2");
    Region dataRegion =
        cache.createRegionFactory(RegionShortcut.PARTITION_PERSISTENT).create(REGION_NAME);
    dataRegion.put("A", new TestObject());
    verifyIndexFinishFlushing(cache, INDEX_NAME, REGION_NAME);
    cache.close();
    createCache();
    createIndex(cache, "field1", "field2");
    dataRegion = cache.createRegionFactory(RegionShortcut.PARTITION_PERSISTENT).create(REGION_NAME);
    LuceneQuery<Object, Object> query = luceneService.createLuceneQueryFactory().create(INDEX_NAME,
        REGION_NAME, "field1:world", DEFAULT_FIELD);
    assertEquals(1, query.findPages().size());
  }

  @Test
  @Parameters(method = "getRegionShortcuts")
  public void shouldHandleMultipleIndexes(RegionShortcut shortcut) throws Exception {
    LuceneServiceProvider.get(this.cache).createIndexFactory().setFields("field1")
        .create(INDEX_NAME + "_1", REGION_NAME);
    LuceneServiceProvider.get(this.cache).createIndexFactory().setFields("field2")
        .create(INDEX_NAME + "_2", REGION_NAME);
    Region region = cache.createRegionFactory(shortcut).create(REGION_NAME);
    region.put("key1", new TestObject());
    verifyQueryResultSize(INDEX_NAME + "_1", REGION_NAME, "field1:world", DEFAULT_FIELD, 1);
    verifyQueryResultSize(INDEX_NAME + "_2", REGION_NAME, "field2:field", DEFAULT_FIELD, 1);
  }

  @Test
  @Parameters(method = "getRegionShortcuts")
  public void shouldCreateInternalRegionsForIndex(RegionShortcut shortcut) {
    luceneService.createIndexFactory().setFields("field1", "field2").create(INDEX_NAME,
        REGION_NAME);

    // Create partitioned region
    createRegion(REGION_NAME, shortcut);

    verifyInternalRegions(region -> {
      region.isInternalRegion();
      assertTrue(region.isInternalRegion());

      assertNotNull(region.getAttributes().getPartitionAttributes().getColocatedWith());
      cache.rootRegions().contains(region);
      assertFalse(cache.rootRegions().contains(region));
    });
  }

  @Test
  public void shouldStoreIndexAndQueueInTheSameDiskStoreAsTheRegion() {
    createIndex(cache, "text");
    cache.createDiskStoreFactory().setDiskDirs(new File[] {tempFolderRule.getRoot()})
        .create("DiskStore");
    cache.createRegionFactory(RegionShortcut.PARTITION_PERSISTENT).setDiskStoreName("DiskStore")
        .create(REGION_NAME);
    final String diskStoreName = cache.getRegion(REGION_NAME).getAttributes().getDiskStoreName();
    verifyInternalRegions(region -> {
      assertEquals(diskStoreName, region.getAttributes().getDiskStoreName());
    });
    AsyncEventQueue queue = getIndexQueue(cache);
    assertEquals(diskStoreName, queue.getDiskStoreName());
  }

  private void verifyQueryResultSize(String indexName, String regionName, String queryString,
      String defaultField, int size) throws Exception {
    LuceneQuery query = luceneService.createLuceneQueryFactory().create(indexName, regionName,
        queryString, defaultField);
    Awaitility.await().atMost(60, TimeUnit.SECONDS).until(() -> {
      try {
        assertEquals(size, query.findPages().size());
      } catch (LuceneQueryException e) {
        throw new RuntimeException(e);
      }
    });
  }

  private void verifyInternalRegions(Consumer<LocalRegion> verify) {
    LuceneTestUtilities.verifyInternalRegions(luceneService, cache, verify);
  }

  private static Object[] getRegionShortcuts() {
    return $(new Object[] {PARTITION}, new Object[] {PARTITION_REDUNDANT},
        new Object[] {PARTITION_PERSISTENT}, new Object[] {PARTITION_REDUNDANT_PERSISTENT},
        new Object[] {PARTITION_OVERFLOW}, new Object[] {PARTITION_REDUNDANT_OVERFLOW},
        new Object[] {PARTITION_PERSISTENT_OVERFLOW},
        new Object[] {PARTITION_REDUNDANT_PERSISTENT_OVERFLOW});
  }

}
