| /* |
| * 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.InputStream; |
| import java.io.PrintStream; |
| import java.util.List; |
| |
| import joptsimple.OptionParser; |
| import joptsimple.OptionSet; |
| import joptsimple.OptionSpec; |
| |
| import org.apache.avro.Schema; |
| import org.apache.avro.file.DataFileWriter; |
| import org.apache.avro.generic.GenericDatumWriter; |
| import org.apache.avro.util.RandomData; |
| |
| /** Creates a file filled with randomly-generated instances of a schema. */ |
| public class CreateRandomFileTool implements Tool { |
| |
| @Override |
| public String getName() { |
| return "random"; |
| } |
| |
| @Override |
| public String getShortDescription() { |
| return "Creates a file with randomly generated instances of a schema."; |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public int run(InputStream stdin, PrintStream out, PrintStream err, List<String> args) throws Exception { |
| |
| OptionParser p = new OptionParser(); |
| OptionSpec<Integer> count = p.accepts("count", "Record Count").withRequiredArg().ofType(Integer.class); |
| OptionSpec<String> codec = Util.compressionCodecOption(p); |
| OptionSpec<Integer> level = Util.compressionLevelOption(p); |
| OptionSpec<String> file = p.accepts("schema-file", "Schema File").withOptionalArg().ofType(String.class); |
| OptionSpec<String> inschema = p.accepts("schema", "Schema").withOptionalArg().ofType(String.class); |
| OptionSpec<Long> seedOpt = p.accepts("seed", "Seed for random").withOptionalArg().ofType(Long.class); |
| |
| OptionSet opts = p.parse(args.toArray(new String[0])); |
| if (opts.nonOptionArguments().size() != 1) { |
| err.println("Usage: outFile (filename or '-' for stdout)"); |
| p.printHelpOn(err); |
| return 1; |
| } |
| args = (List<String>) opts.nonOptionArguments(); |
| |
| String schemastr = inschema.value(opts); |
| String schemafile = file.value(opts); |
| Long seed = seedOpt.value(opts); |
| if (schemastr == null && schemafile == null) { |
| err.println("Need input schema (--schema-file) or (--schema)"); |
| p.printHelpOn(err); |
| return 1; |
| } |
| Schema schema = (schemafile != null) ? Util.parseSchemaFromFS(schemafile) : new Schema.Parser().parse(schemastr); |
| |
| DataFileWriter<Object> writer = new DataFileWriter<>(new GenericDatumWriter<>()); |
| writer.setCodec(Util.codecFactory(opts, codec, level)); |
| writer.create(schema, Util.fileOrStdout(args.get(0), out)); |
| |
| Integer countValue = count.value(opts); |
| if (countValue == null) { |
| err.println("Need count (--count)"); |
| p.printHelpOn(err); |
| writer.close(); |
| return 1; |
| } |
| |
| RandomData rd = seed == null ? new RandomData(schema, countValue) : new RandomData(schema, countValue, seed); |
| for (Object datum : rd) |
| writer.append(datum); |
| |
| writer.close(); |
| |
| return 0; |
| } |
| |
| } |