content: /*
   * 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
   *
   *     https://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.avro.mapred;
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.hadoop.io.NullWritable;
  import org.apache.hadoop.fs.FileStatus;
  import org.apache.hadoop.mapred.JobConf;
  import org.apache.hadoop.mapred.FileInputFormat;
  import org.apache.hadoop.mapred.InputSplit;
  import org.apache.hadoop.mapred.FileSplit;
  import org.apache.hadoop.mapred.Reporter;
  import org.apache.hadoop.mapred.RecordReader;
  
  /**
   * An {@link org.apache.hadoop.mapred.InputFormat} for Avro data files.
   *
   * By default, when pointed at a directory, this will silently skip over any
   * files in it that do not have .avro extension. To instead include all files,
   * set the avro.mapred.ignore.inputs.without.extension property to false.
   */
  public class AvroInputFormat<T> extends FileInputFormat<AvroWrapper<T>, NullWritable> {
  
    /** Whether to silently ignore input files without the .avro extension */
    public static final String IGNORE_FILES_WITHOUT_EXTENSION_KEY = "avro.mapred.ignore.inputs.without.extension";
  
    /**
     * Default of whether to silently ignore input files without the .avro
     * extension.
     */
    public static final boolean IGNORE_INPUTS_WITHOUT_EXTENSION_DEFAULT = true;
  
    @Override
    protected FileStatus[] listStatus(JobConf job) throws IOException {
      FileStatus[] status = super.listStatus(job);
      if (job.getBoolean(IGNORE_FILES_WITHOUT_EXTENSION_KEY, IGNORE_INPUTS_WITHOUT_EXTENSION_DEFAULT)) {
        List<FileStatus> result = new ArrayList<>(status.length);
        for (FileStatus file : status)
          if (file.getPath().getName().endsWith(AvroOutputFormat.EXT))
            result.add(file);
        status = result.toArray(new FileStatus[0]);
      }
      return status;
    }
  
    @Override
    public RecordReader<AvroWrapper<T>, NullWritable> getRecordReader(InputSplit split, JobConf job, Reporter reporter)
        throws IOException {
      reporter.setStatus(split.toString());
      return new AvroRecordReader<>(job, (FileSplit) split);
    }
  
  }
  