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Gobblin Ingestion Framework

There is a newer version: 0.8.0

/*
 * Copyright (C) 2014-2016 LinkedIn Corp. All rights reserved.
 *
 * 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.
 */

package gobblin.writer;

import java.io.IOException;

import org.apache.avro.Schema;
import org.apache.avro.generic.GenericRecord;

import com.google.common.base.Preconditions;
import com.google.common.base.Strings;


/**
 * A {@link DataWriterBuilder} for building {@link DataWriter} that writes in Avro format.
 *
 * @author Yinan Li
 */
public class AvroDataWriterBuilder extends FsDataWriterBuilder {

  @Override
  public DataWriter build() throws IOException {
    Preconditions.checkNotNull(this.destination);
    Preconditions.checkArgument(!Strings.isNullOrEmpty(this.writerId));
    Preconditions.checkNotNull(this.schema);
    Preconditions.checkArgument(this.format == WriterOutputFormat.AVRO);

    switch (this.destination.getType()) {
      case HDFS:
        return new AvroHdfsDataWriter(this, this.destination.getProperties());
      case KAFKA:
        return new AvroKafkaDataWriter();
      default:
        throw new RuntimeException("Unknown destination type: " + this.destination.getType());
    }
  }
}