V20161215163900_MoveIndexSetDefaultConfigTest.java

/**
 * This file is part of Graylog.
 *
 * Graylog is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Graylog is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Graylog.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.graylog2.migrations;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.model.Filters;
import org.bson.Document;
import org.graylog2.bindings.providers.MongoJackObjectMapperProvider;
import org.graylog2.cluster.ClusterConfigServiceImpl;
import org.graylog2.events.ClusterEventBus;
import org.graylog2.fongo.SeedingFongoRule;
import org.graylog2.indexer.indexset.DefaultIndexSetConfig;
import org.graylog2.migrations.V20161215163900_MoveIndexSetDefaultConfig.MigrationCompleted;
import org.graylog2.plugin.system.NodeId;
import org.graylog2.shared.bindings.providers.ObjectMapperProvider;
import org.graylog2.shared.plugins.ChainingClassLoader;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.mockito.Mock;
import org.mockito.junit.MockitoJUnit;
import org.mockito.junit.MockitoRule;

import java.time.ZonedDateTime;
import java.util.Collections;

import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.reset;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.verify;

public class V20161215163900_MoveIndexSetDefaultConfigTest {
    @Rule
    public SeedingFongoRule fongoRule = SeedingFongoRule.create("graylog_test")
            .addSeed("org/graylog2/migrations/V20161215163900_MoveIndexSetDefaultConfigTest.json");

    @Rule
    public final MockitoRule mockitoRule = MockitoJUnit.rule();
    @Rule
    public final ExpectedException expectedException = ExpectedException.none();

    @Mock
    public NodeId nodeId;

    private final ObjectMapper objectMapper = new ObjectMapperProvider().get();
    private final MongoJackObjectMapperProvider objectMapperProvider = new MongoJackObjectMapperProvider(objectMapper);

    private ClusterConfigServiceImpl clusterConfigService;
    private Migration migration;
    private MongoCollection<Document> collection;

    @Before
    public void setUp() throws Exception {
        this.clusterConfigService = spy(new ClusterConfigServiceImpl(objectMapperProvider,
                fongoRule.getConnection(), nodeId,
                new ChainingClassLoader(getClass().getClassLoader()), new ClusterEventBus()));

        this.collection = fongoRule.getDatabase().getCollection("index_sets");

        this.migration = new V20161215163900_MoveIndexSetDefaultConfig(fongoRule.getConnection(), clusterConfigService);
    }

    @Test
    public void createdAt() throws Exception {
        assertThat(migration.createdAt()).isEqualTo(ZonedDateTime.parse("2016-12-15T16:39:00Z"));
    }

    @Test
    public void upgrade() throws Exception {
        final long count = collection.count();

        migration.upgrade();

        final MigrationCompleted migrationCompleted = clusterConfigService.get(MigrationCompleted.class);

        assertThat(collection.count())
                .withFailMessage("No document should be deleted by the migration!")
                .isEqualTo(count);
        assertThat(collection.count(Filters.exists("default")))
                .withFailMessage("The migration should have deleted the \"default\" field from the documents!")
                .isEqualTo(0L);

        assertThat(clusterConfigService.get(DefaultIndexSetConfig.class))
                .withFailMessage("The DefaultIndexSetConfig should have been written to cluster config!")
                .isNotNull();
        assertThat(clusterConfigService.get(DefaultIndexSetConfig.class).defaultIndexSetId()).isEqualTo("57f3d721a43c2d59cb750001");

        assertThat(migrationCompleted).isNotNull();
        assertThat(migrationCompleted.indexSetIds()).containsExactly("57f3d721a43c2d59cb750001", "57f3d721a43c2d59cb750003");
    }

    @Test
    public void upgradeWhenMigrationCompleted() throws Exception {
        // Count how many documents with a "default" field are in the database.
        final long count = collection.count(Filters.exists("default"));

        assertThat(count)
                .withFailMessage("There should be at least one document with a \"default\" field in the database")
                .isGreaterThan(0L);

        clusterConfigService.write(MigrationCompleted.create(Collections.emptySet()));
        migration.upgrade();

        // If the MigrationCompleted object has been written to the cluster config, the migration shouldn't do anything
        // and shouldn't touch the database. Thank means we should still have all documents with the "default" field
        // from the seed file in the database.
        assertThat(collection.count(Filters.exists("default"))).isEqualTo(count);
    }

    @Test
    public void upgradeWhenDefaultIndexSetConfigExists() throws Exception {
        clusterConfigService.write(DefaultIndexSetConfig.create("57f3d721a43c2d59cb750001"));

        // Reset the spy to be able to verify that there wasn't a write
        reset(clusterConfigService);

        migration.upgrade();

        verify(clusterConfigService, never()).write(any(DefaultIndexSetConfig.class));
    }
}