| /** |
| * 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 |
| * |
| * 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.apache.avro; |
| |
| import org.apache.avro.generic.GenericDatumWriter; |
| import org.apache.avro.io.DatumWriter; |
| import org.apache.avro.io.Encoder; |
| import org.apache.avro.io.EncoderFactory; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| |
| /** |
| * Generates file with objects of a specific schema(that doesn't contain nesting |
| * of arrays and maps) with random data. This is only for testing. |
| * Generated file contains the count of objects of the specified schema followed |
| * by objects serialized using BlockingBinaryEncoder. No other metadata is |
| * written to the file. See interoptests.py for more details(interoptests.py |
| * reads the file generated here and validates the contents). |
| */ |
| public class GenerateBlockingData { |
| private static final int SYNC_INTERVAL = 1000; |
| private static ByteArrayOutputStream buffer = |
| new ByteArrayOutputStream(2*SYNC_INTERVAL); |
| |
| private static EncoderFactory factory = EncoderFactory.get(); |
| private static Encoder bufOut = EncoderFactory.get().blockingBinaryEncoder( |
| buffer, null); |
| private static int blockCount; |
| |
| private static void writeBlock(Encoder vout, FileOutputStream out) |
| throws IOException{ |
| vout.writeLong(blockCount); |
| bufOut.flush(); |
| buffer.writeTo(out); |
| buffer.reset(); |
| blockCount = 0; |
| } |
| |
| public static void main(String[] args) throws Exception { |
| if(args.length != 3) { |
| System.out.println( |
| "Usage: GenerateBlockingData <schemafile> <outputfile> <count>"); |
| System.exit(-1); |
| } |
| |
| Schema sch = Schema.parse(new File(args[0])); |
| File outputFile = new File(args[1]); |
| int numObjects = Integer.parseInt(args[2]); |
| |
| FileOutputStream out = new FileOutputStream(outputFile, false); |
| DatumWriter<Object> dout = new GenericDatumWriter<Object>(); |
| dout.setSchema(sch); |
| Encoder vout = factory.directBinaryEncoder(out, null); |
| vout.writeLong(numObjects); // metadata:the count of objects in the file |
| |
| for (Object datum : new RandomData(sch, numObjects)) { |
| dout.write(datum, bufOut); |
| blockCount++; |
| if (buffer.size() >= SYNC_INTERVAL) { |
| writeBlock(vout, out); |
| } |
| } |
| if (blockCount > 0) { |
| writeBlock(vout, out); |
| } |
| out.flush(); |
| out.close(); |
| } |
| } |