gobblin.data.management.conversion.hive.LocalHiveMetastoreTestUtils.java Source code

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Here is the source code for gobblin.data.management.conversion.hive.LocalHiveMetastoreTestUtils.java

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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 gobblin.data.management.conversion.hive;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Properties;
import java.util.concurrent.TimeUnit;

import lombok.extern.slf4j.Slf4j;

import org.apache.commons.io.FileUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.hadoop.hive.metastore.IMetaStoreClient;
import org.apache.hadoop.hive.metastore.api.AlreadyExistsException;
import org.apache.hadoop.hive.metastore.api.Database;
import org.apache.hadoop.hive.metastore.api.FieldSchema;
import org.apache.hadoop.hive.metastore.api.MetaException;
import org.apache.hadoop.hive.metastore.api.NoSuchObjectException;
import org.apache.hadoop.hive.metastore.api.Partition;
import org.apache.hadoop.hive.metastore.api.SerDeInfo;
import org.apache.hadoop.hive.metastore.api.StorageDescriptor;
import org.apache.hadoop.hive.metastore.api.Table;
import org.apache.thrift.TException;

import com.google.common.base.Optional;
import com.google.common.collect.ImmutableMap;

import gobblin.hive.HiveMetastoreClientPool;
import gobblin.hive.avro.HiveAvroSerDeManager;

/**
 * Provides a singleton instance of local Hive metastore client and helper methods
 * to run test cases
 */
@Slf4j
public class LocalHiveMetastoreTestUtils {
    private static LocalHiveMetastoreTestUtils instance;
    private IMetaStoreClient localMetastoreClient;

    private LocalHiveMetastoreTestUtils() throws IOException {
        try {
            FileUtils.deleteDirectory(new File("metastore_db"));
        } catch (IOException e) {
            e.printStackTrace();
        }
        this.localMetastoreClient = HiveMetastoreClientPool.get(new Properties(), Optional.<String>absent())
                .getClient().get();
    }

    static {
        try {
            // Not most optimal singleton initialization, but sufficient for test
            instance = new LocalHiveMetastoreTestUtils();
        } catch (IOException e) {
            throw new RuntimeException("Exception occurred in initializing ConversionHiveUtils", e);
        } catch (Throwable t) {
            throw new RuntimeException("Exception occurred in initializing ConversionHiveUtils", t);
        }
    }

    public static LocalHiveMetastoreTestUtils getInstance() {
        return instance;
    }

    public IMetaStoreClient getLocalMetastoreClient() {
        return localMetastoreClient;
    }

    public void dropDatabaseIfExists(String dbName) throws MetaException, TException {
        try {
            this.getLocalMetastoreClient().getDatabase(dbName);
            this.getLocalMetastoreClient().dropDatabase(dbName, false, true, true);
        } catch (NoSuchObjectException e) {
            // No need to drop
        }
    }

    public Table createTestTable(String dbName, String tableName, String tableSdLoc,
            Optional<String> partitionFieldName) throws Exception {
        return createTestTable(dbName, tableName, tableSdLoc, partitionFieldName, false);
    }

    public Table createTestTable(String dbName, String tableName, String tableSdLoc,
            Optional<String> partitionFieldName, boolean ignoreDbCreation) throws Exception {
        if (!ignoreDbCreation) {
            createTestDb(dbName);
        }

        Table tbl = org.apache.hadoop.hive.ql.metadata.Table.getEmptyTable(dbName, tableName);
        tbl.getSd().setLocation(tableSdLoc);
        tbl.getSd().getSerdeInfo().setParameters(ImmutableMap.of(HiveAvroSerDeManager.SCHEMA_URL, "/tmp/dummy"));

        if (partitionFieldName.isPresent()) {
            tbl.addToPartitionKeys(new FieldSchema(partitionFieldName.get(), "string", "some comment"));
        }

        this.localMetastoreClient.createTable(tbl);

        return tbl;
    }

    public Table createTestTable(String dbName, String tableName, List<String> partitionFieldNames)
            throws Exception {
        return createTestTable(dbName, tableName, "/tmp/" + tableName, partitionFieldNames, true);
    }

    public Table createTestTable(String dbName, String tableName, String tableSdLoc,
            List<String> partitionFieldNames, boolean ignoreDbCreation) throws Exception {

        if (!ignoreDbCreation) {
            createTestDb(dbName);
        }

        Table tbl = org.apache.hadoop.hive.ql.metadata.Table.getEmptyTable(dbName, tableName);
        tbl.getSd().setLocation(tableSdLoc);
        tbl.getSd().getSerdeInfo().setParameters(ImmutableMap.of(HiveAvroSerDeManager.SCHEMA_URL, "/tmp/dummy"));

        for (String partitionFieldName : partitionFieldNames) {
            tbl.addToPartitionKeys(new FieldSchema(partitionFieldName, "string", "some comment"));
        }

        this.localMetastoreClient.createTable(tbl);

        return tbl;
    }

    public void createTestDb(String dbName) throws Exception {
        Database db = new Database(dbName, "Some description", "/tmp/" + dbName, new HashMap<String, String>());
        try {
            this.localMetastoreClient.createDatabase(db);
        } catch (AlreadyExistsException e) {
            log.warn(dbName + " already exits");
        }
    }

    public Partition addTestPartition(Table tbl, List<String> values, int createTime) throws Exception {
        StorageDescriptor partitionSd = new StorageDescriptor();
        if (StringUtils.isNotBlank(tbl.getSd().getLocation())) {
            partitionSd.setLocation(tbl.getSd().getLocation() + values);
        } else {
            partitionSd.setLocation("/tmp/" + tbl.getTableName() + "/part1");
        }

        partitionSd.setSerdeInfo(new SerDeInfo("name", "serializationLib",
                ImmutableMap.of(HiveAvroSerDeManager.SCHEMA_URL, "/tmp/dummy")));
        partitionSd.setCols(tbl.getPartitionKeys());
        Partition partition = new Partition(values, tbl.getDbName(), tbl.getTableName(), 1, 1, partitionSd,
                new HashMap<String, String>());
        partition.setCreateTime(createTime);
        return this.getLocalMetastoreClient().add_partition(partition);

    }

    public org.apache.hadoop.hive.ql.metadata.Partition createDummyPartition(long createTime) {
        org.apache.hadoop.hive.ql.metadata.Partition partition = new org.apache.hadoop.hive.ql.metadata.Partition();
        Partition tPartition = new Partition();
        tPartition.setCreateTime((int) TimeUnit.SECONDS.convert(createTime, TimeUnit.MILLISECONDS));
        partition.setTPartition(tPartition);

        return partition;
    }
}