org.kitesdk.examples.Main.java Source code

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Here is the source code for org.kitesdk.examples.Main.java

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/*
 * Copyright 2015 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 org.kitesdk.examples;

import java.io.File;
import java.io.FileInputStream;
import java.util.EnumSet;
import org.apache.avro.Schema;
import org.apache.avro.reflect.ReflectData;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.CreateFlag;
import org.apache.hadoop.fs.FileContext;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.SequenceFile;
import org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat;

public class Main {
    public static void main(String[] args) throws Exception {
        if (args.length != 2) {
            System.err.println("Usage: java -jar zips-1.jar <zips.json> <out.sequence>");
            System.exit(1);
        }

        SequenceFileInputFormat in;

        File file = new File(args[0]);
        if (!file.exists() || !file.canRead()) {
            System.err.println("Cannot read " + file);
        }

        Schema schema = ReflectData.get().getSchema(ZipCode.class);
        JSONFileReader<ZipCode> reader = new JSONFileReader<ZipCode>(new FileInputStream(file), schema,
                ZipCode.class);
        reader.initialize();

        FileContext context = FileContext.getLocalFSFileContext();
        SequenceFile.Writer writer = SequenceFile.createWriter(context, new Configuration(), new Path(args[1]),
                NullWritable.class, ZipCode.class, SequenceFile.CompressionType.NONE, null,
                new SequenceFile.Metadata(), EnumSet.of(CreateFlag.CREATE, CreateFlag.OVERWRITE));

        for (ZipCode zip : reader) {
            writer.append(NullWritable.get(), zip);
        }

        writer.close();
    }
}