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.tool;
  
  import java.io.File;
  import java.io.InputStream;
  import java.io.PrintStream;
  import java.util.List;
  
  import org.apache.avro.Schema;
  import org.apache.avro.util.RandomData;
  import org.apache.trevni.ColumnFileMetaData;
  import org.apache.trevni.avro.AvroColumnWriter;
  
  /** Tool to create randomly populated Trevni file based on an Avro schema */
  public class TrevniCreateRandomTool implements Tool {
  
    @Override
    public String getName() {
      return "trevni_random";
    }
  
    @Override
    public String getShortDescription() {
      return "Create a Trevni file filled with random instances of a schema.";
    }
  
    @Override
    public int run(InputStream stdin, PrintStream out, PrintStream err, List<String> args) throws Exception {
      if (args.size() != 3) {
        err.println("Usage: schemaFile count outputFile");
        return 1;
      }
  
      File schemaFile = new File(args.get(0));
      int count = Integer.parseInt(args.get(1));
      File outputFile = new File(args.get(2));
  
      Schema schema = new Schema.Parser().parse(schemaFile);
  
      AvroColumnWriter<Object> writer = new AvroColumnWriter<>(schema, new ColumnFileMetaData());
  
      for (Object datum : new RandomData(schema, count))
        writer.write(datum);
  
      writer.writeTo(outputFile);
  
      return 0;
    }
  }
  