org.apache.carbondata.core.datastore.CompressdFileTest.java Source code

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Here is the source code for org.apache.carbondata.core.datastore.CompressdFileTest.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 org.apache.carbondata.core.datastore;

import org.apache.carbondata.core.constants.CarbonCommonConstants;
import org.apache.carbondata.core.datastore.impl.FileFactory;
import org.apache.carbondata.core.datastore.impl.FileFactory.*;

import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;

import java.io.DataInputStream;
import java.io.FileOutputStream;
import java.io.File;
import java.io.Writer;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.nio.charset.Charset;
import java.util.zip.GZIPOutputStream;

import org.apache.commons.compress.compressors.bzip2.BZip2CompressorOutputStream;
import static junit.framework.TestCase.assertTrue;

public class CompressdFileTest {
    @BeforeClass
    public static void setUp() throws Exception {
        String path = "../core/src/test/resources/testFile";
        String content = "hello world";

        makeGzipFile(path, content);
        makeBzip2File(path, content);

    }

    private static void makeGzipFile(String path, String content) throws Exception {
        path = path + ".gz";
        FileOutputStream output = new FileOutputStream(path);
        try {
            Writer writer = new OutputStreamWriter(new GZIPOutputStream(output), "UTF-8");
            try {
                writer.write(content);
            } finally {
                writer.close();
            }
        } finally {
            output.close();
        }
    }

    private static void makeBzip2File(String path, String content) throws Exception {
        path = path + ".bz2";
        FileOutputStream output = new FileOutputStream(path);
        try {
            Writer writer = new OutputStreamWriter(new BZip2CompressorOutputStream(output), "UTF-8");
            try {
                writer.write(content);
            } finally {
                writer.close();
            }
        } finally {
            output.close();
        }
    }

    @Test
    public void testReadGzFile() throws Exception {
        assertTrue(readCompressed("../core/src/test/resources/testFile.gz").equals("hello world"));
    }

    @Test
    public void testReadBzip2File() throws Exception {
        assertTrue(readCompressed("../core/src/test/resources/testFile.bz2").equals("hello world"));
    }

    private static String readCompressed(String path) throws Exception {
        DataInputStream fileReader = null;
        BufferedReader bufferedReader = null;
        String readLine = null;

        try {
            fileReader = FileFactory.getDataInputStream(path, FileType.HDFS);
            bufferedReader = new BufferedReader(
                    new InputStreamReader(fileReader, Charset.forName(CarbonCommonConstants.DEFAULT_CHARSET)));
            readLine = bufferedReader.readLine();
        } finally {
            if (null != fileReader) {
                fileReader.close();
            }

            if (null != bufferedReader) {
                bufferedReader.close();
            }
        }
        return readLine;
    }

    @AfterClass
    public static void testCleanUp() {
        new File("../core/src/test/resources/testFile.gz").deleteOnExit();
        new File("../core/src/test/resources/testFile.bz2").deleteOnExit();
    }
}