com.cloudera.data.filesystem.TestFileSystemDatasetWriter.java Source code

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Here is the source code for com.cloudera.data.filesystem.TestFileSystemDatasetWriter.java

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/**
 * Copyright 2013 Cloudera Inc.
 *
 * Licensed 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.cloudera.data.filesystem;

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

import org.apache.avro.Schema;
import org.apache.avro.Schema.Type;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import com.cloudera.data.filesystem.FileSystemDatasetWriter;
import com.google.common.io.Files;

public class TestFileSystemDatasetWriter {

    private File testDirectory;
    private FileSystem fileSystem;

    @Before
    public void setUp() throws IOException {
        testDirectory = Files.createTempDir();

        Configuration conf = new Configuration();

        conf.set("fs.default.name", "file:///");
        fileSystem = FileSystem.get(conf);
    }

    @After
    public void tearDown() throws IOException {
        fileSystem.delete(new Path(testDirectory.getAbsolutePath()), true);
    }

    @Test
    public void testWrite() throws IOException {
        FileSystemDatasetWriter<String> writer = new FileSystemDatasetWriter<String>(fileSystem,
                new Path(testDirectory.getAbsolutePath(), "write-1.avro"), Schema.create(Type.STRING), true);

        writer.open();

        for (int i = 0; i < 100; i++) {
            writer.write("entry " + i);

            if (i % 10 == 0) {
                writer.flush();
            }
        }

        writer.close();
    }

}