com.facebook.hiveio.testing.LocalHiveServer.java Source code

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Here is the source code for com.facebook.hiveio.testing.LocalHiveServer.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 com.facebook.hiveio.testing;

import org.apache.commons.io.FileUtils;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.service.HiveInterface;
import org.apache.hadoop.hive.service.HiveServer;
import org.apache.thrift.TException;

import com.facebook.hiveio.common.HiveUtils;
import com.google.common.base.Charsets;
import com.google.common.io.Files;

import java.io.File;
import java.io.IOException;
import java.io.Writer;

public class LocalHiveServer {
    public static final File TMP_DIR = new File(System.getProperty("java.io.tmpdir"));

    private final String name;
    private File baseDir;
    private HiveConf hiveConf;
    private HiveServer.HiveServerHandler client;

    public LocalHiveServer(String name) {
        this.name = name;
    }

    public void init() throws IOException, TException {
        if (baseDir != null && baseDir.isDirectory()) {
            FileUtils.deleteDirectory(baseDir);
        }

        hiveConf = HiveUtils.newHiveConf();
        baseDir = randomDir();

        File metastore = new File(baseDir, "metastore");
        hiveConf.setVar(HiveConf.ConfVars.METASTOREDIRECTORY, metastore.getAbsolutePath());

        File warehouse = new File(baseDir, "warehouse");
        hiveConf.setVar(HiveConf.ConfVars.METASTOREWAREHOUSE, warehouse.getAbsolutePath());

        File metastoreDb = new File(baseDir, "metastore_db");
        hiveConf.setVar(HiveConf.ConfVars.METASTORECONNECTURLKEY,
                "jdbc:derby:;databaseName=" + metastoreDb.getAbsolutePath() + ";create=true");

        client = new HiveServer.HiveServerHandler(hiveConf);
        client.execute("CREATE DATABASE IF NOT EXISTS default");
    }

    public void dropTable(String name) throws TException {
        client.execute("DROP TABLE " + name);
    }

    public void createTable(String hql) throws TException {
        client.execute(hql);
    }

    public void loadData(String tableName, String[] data) throws IOException, TException {
        File dataFile = writeDataToFile(tableName, data);
        client.execute(
                "LOAD DATA LOCAL INPATH '" + dataFile.getAbsolutePath() + "' OVERWRITE INTO TABLE " + tableName);
    }

    public void loadData(String tableName, String partitionStr, String[] data) throws IOException, TException {
        File dataFile = writeDataToFile(tableName, data);
        client.execute("LOAD DATA LOCAL INPATH '" + dataFile.getAbsolutePath() + "' OVERWRITE INTO TABLE "
                + tableName + " PARTITION (" + partitionStr + ")");
    }

    private File writeDataToFile(String tableName, String[] data) throws IOException {
        File dataFile = new File(rootDir(), tableName);
        Writer writer = Files.newWriter(dataFile, Charsets.UTF_8);
        for (String line : data) {
            writer.write(line);
            writer.write("\n");
        }
        writer.close();
        return dataFile;
    }

    public File rootDir() {
        return TMP_DIR;
    }

    public File randomDir() {
        return new File(rootDir(), name + "-" + System.currentTimeMillis());
    }

    public HiveInterface getClient() {
        return client;
    }

    public HiveConf getHiveConf() {
        return hiveConf;
    }

    public String getName() {
        return name;
    }
}